U.S. patent application number 14/413653 was filed with the patent office on 2015-07-30 for method for cutting a tube segment from a tube.
This patent application is currently assigned to NEOPERL GMBH. The applicant listed for this patent is NEOPERL GMBH. Invention is credited to Werner Kury, Roger Schlitter.
Application Number | 20150211661 14/413653 |
Document ID | / |
Family ID | 47915389 |
Filed Date | 2015-07-30 |
United States Patent
Application |
20150211661 |
Kind Code |
A1 |
Schlitter; Roger ; et
al. |
July 30, 2015 |
METHOD FOR CUTTING A TUBE SEGMENT FROM A TUBE
Abstract
The invention relates to a method for cutting a tube segment (1)
from a tube, said tube being provided with an inner tube (2) and an
outer tube casing (3) surrounding the inner tube (2). Said the tube
segment (1) is separated from the tube, by means of a cutting tool,
at a cutting point in a cutting plane oriented transversely to the
longitudinal extension of the tube. The tube casing (3) of the tube
is surrounded by a separable tube retainer (4), which covers the
provided cutting point before the tube segment (1) is separated
from the tube, by means of the cutting tool, at the cutting point,
wherein the tube retainer (4) completely surrounds the outer tube
casing (3) in a peripheral direction. Said claimed method and tube
segment produced according to said method are characterised in that
the tube retainer (4) is fixed to the tube casing (3), and/or the
tube surrounded by the tube retainer (4) is separated by means of
the cutting tool such that a relative displacement of the tube
retainer (4) with respect to the tube casing (3), that is, of the
tube casing (3) with respect to the inner tube (2), is
prevented.
Inventors: |
Schlitter; Roger; (Freiburg,
DE) ; Kury; Werner; (Mullheim, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
NEOPERL GMBH |
Mullheim |
|
DE |
|
|
Assignee: |
NEOPERL GMBH
Mullheim
DE
|
Family ID: |
47915389 |
Appl. No.: |
14/413653 |
Filed: |
August 9, 2013 |
PCT Filed: |
August 9, 2013 |
PCT NO: |
PCT/EP2013/002401 |
371 Date: |
January 8, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13597731 |
Aug 29, 2012 |
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14413653 |
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|
11775890 |
Jul 11, 2007 |
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13597731 |
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61694839 |
Aug 30, 2012 |
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Current U.S.
Class: |
138/137 ;
83/14 |
Current CPC
Class: |
B26D 3/16 20130101; B32B
37/12 20130101; Y10T 29/49817 20150115; Y10T 83/0596 20150401; B32B
2597/00 20130101; Y10T 83/0405 20150401; F16L 11/04 20130101; B32B
38/0004 20130101; B26F 3/08 20130101; B26D 7/08 20130101; B32B
37/18 20130101; B26F 3/06 20130101 |
International
Class: |
F16L 11/04 20060101
F16L011/04; B26D 3/16 20060101 B26D003/16 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 19, 2006 |
DE |
102006033409.4 |
Claims
1. A method for cutting a hose segment (1) to length from a hose,
said hose has an inner hose (2) and an outer hose casing (3)
surrounding the inner hose (2), wherein the hose segment (1) is
separated from the hose in a cutting plane oriented perpendicular
to the longitudinal extent of said hose by means of a cutting tool
at a cutting point, wherein the hose casing (3) of the hose is
ensheathed with a severable hose fixing means (4) which covers the
intended cutting point before the hose segment (1) is separated
from the hose at the cutting point by means of the cutting tool,
wherein the hose fixing means (4) fully surrounds the outer hose
casing (3) in a circumferential direction, and wherein the hose
fixing means (4) is fixed on the hose casing (3), and/or the hose
surrounded by the hose fixing means (4) is severed by means of the
cutting tool, in such a way that a relative displacement of the
hose fixing means (4) with respect to the hose casing (3) and/or of
the hose casing (3) with respect to the inner hose (2) is
prevented, wherein the hose fixing means (4) in the form of an
adhesive tape which is adhesive on one side has a middle part (6)
which fully surrounds the hose and which is adjoined at both sides
by hose fixing end parts (7, 8), in that the hose fixing end parts
(7, 8) bear with their adhesive surfaces (9) against one another,
and in that the hose fixing end parts (7, 8), bearing with their
adhesive surfaces (9) against one another, are laid against the
hose such that the adhesive surface (9) of one of the hose fixing
end parts (7, 8) is, by way of a subregion protruding beyond the
other hose fixing end part (7, 8), held adhesively on the hose or
on the hose segment.
2. A hose segment (1) having an inner hose (2) and having an outer
hose casing (3) surrounding the inner hose (2), said hose casing
(3) is ensheathed by a cut-to-length, severable hose fixing means
(4) which extends as far as a cutting plane formed by a face end of
the hose segment and oriented perpendicular to the longitudinal
extent of the hose segment (1), and which at least fully surrounds
the outer hose casing (3) in a circumferential direction with a
wrap angle of at least 360.degree., wherein the hose fixing means
(4) is fixed on the outer hose casing (3) such that a relative
displacement of the hose fixing means (4) with respect to the hose
casing (3) and/or of the hose casing (3) with respect to the inner
hose (2) is prevented, wherein the hose fixing means (4) in the
form of an adhesive tape which is adhesive on one side has a middle
part (6) which fully surrounds the hose and which is adjoined at
both sides by hose fixing end parts (7, 8), in that the hose fixing
end parts (7, 8) bear with their adhesive surfaces (9) against one
another, and in that the hose fixing end parts (7, 8), bearing with
their adhesive surfaces (9) against one another, are laid against
the hose such that the adhesive surface (9) of one of the hose
fixing end parts (7, 8) is, by way of a subregion protruding beyond
the other hose fixing end part (7, 8), held adhesively on the hose
or on the hose segment.
3. The method as claimed in claim 1, wherein the hose is cut to
length by means of a cutting blade (12) which serves as a cutting
tool and which is guided approximately perpendicularly with respect
to the hose longitudinal direction.
4. The method as claimed in claim 1, wherein a clamping sleeve, a
crimp sleeve or similar hose end piece (5) is pushed onto an end of
the hose segment (1) which is secured by the hose fixing means (4),
and the hose fixing means (4) protrudes beyond the inner end of the
hose end piece (5) and forms a kink prevention means.
5. The method as claimed in claim 1, wherein the hose is cut to
length by means of a cutting tool (13) which generates cutting
heat, in such a way that plastic material, which becomes pasty
under action of the cutting heat, of at least one of the
constituents: hose fixing means (4), hose casing (3) and/or inner
hose (2), fixes at least in regions to at least one of the adjacent
constituents (2, 3, 4).
6. The hose segment as claimed in claim 2, wherein the hose is cut
to length by means of a cutting blade (12) which serves as a
cutting tool and which is guided approximately perpendicularly with
respect to the hose longitudinal direction.
7. The hose segment as claimed in claim 2, wherein a clamping
sleeve, a crimp sleeve or similar hose end piece (5) is pushed onto
an end of the hose segment (1) which is secured by the hose fixing
means (4), and the hose fixing means (4) protrudes beyond the inner
end of the hose end piece (5) and forms a kink prevention
means.
8. The hose segment as claimed in claim 2, wherein the hose is cut
to length by means of a cutting tool (13) which generates cutting
heat in such a way that plastic material, which becomes pasty under
action of the cutting heat, of at least one of the constituents:
hose fixing means (4), hose casing (3) and/or inner hose (2), fixes
at least in regions to at least one of the adjacent constituents
(2, 3, 4).
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a .sctn.371 National Phase of
PCT/EP2013/002401, filed Aug. 9, 2013, which claims the benefit of
the U.S. provisional application No. 61/694,839 filed on 30 Aug.
2012 and that of the U.S. patent application Ser. No. 13/597,731
filed on 29 Aug. 2012, and is a continuation-in-part application of
the U.S. patent application Ser. No. 11/775,890 filed on 11 Jul.
2007; the complete disclosures of said documents are hereby
expressly included.
FIELD OF THE INVENTION
[0002] The invention relates to a method for cutting a hose segment
to length from a hose, which hose has an inner hose and an outer
hose casing surrounding the inner hose, wherein the hose segment is
separated from the hose in a cutting plane oriented perpendicular
to the longitudinal extent of said hose by means of a cutting tool
at a cutting point, wherein the hose casing of the hose is
ensheathed with a severable hose fixing means which covers the
intended cutting point before the hose segment is separated from
the hose at the cutting point by means of the cutting tool, wherein
the hose fixing means fully surrounds the outer hose casing in a
circumferential direction, and wherein the hose fixing means is
fixed on the hose casing, and/or the hose surrounded by the hose
fixing means is severed by means of the cutting tool, in such a way
that a relative displacement of the hose fixing means with respect
to the hose casing and/or of the hose casing with respect to the
inner hose is prevented.
[0003] The invention also relates to a hose segment having an inner
hose and having an outer hose casing surrounding the inner hose,
which hose casing is ensheathed by a cut-to-length, severable hose
fixing means which extends as far as a cutting plane formed by a
face end of the hose segment and oriented perpendicular to the
longitudinal extent of the hose segment and which at least fully
surrounds the outer hose casing in a circumferential direction with
a wrap angle of at least 360.degree., wherein the hose fixing means
is fixed on the outer hose casing such that a relative displacement
of the hose fixing means with respect to the hose casing and/or of
the hose casing with respect to the inner hose is prevented.
BACKGROUND
[0004] US 2008/0016936 A1 has already disclosed a method of the
type mentioned in the introduction which is used for cutting a hose
segment to length from a hose, which hose has an inner hose and an
outer hose casing which surrounds the inner hose and which is in
the form of a meshwork formed from metal or plastics strands. To be
able to separate the hose segment from the hose in a cutting plane
oriented perpendicular to the longitudinal extent of the hose by
means of a cutting tool at a cutting point, the known method makes
provision for the hose casing of the hose to be ensheathed with a
severable hose fixing means which covers the intended cutting point
before the hose segment is separated from the hose at the cutting
point by means of the cutting tool. The known method duly prevents
individual metal or plastics strands of the meshwork provided as a
hose casing from being able to become snagged when a clamping
sleeve is pushed onto the hose segment that has been cut to length
in this way; normally, however, said clamping sleeves have a
clamping sleeve internal diameter which is matched to the external
diameter of the hose segment, with the result that, as the clamping
sleeve is pushed on, there is the risk of the hose fixing means
being pushed back relative to the hose casing, and additionally or
instead the hose casing being pushed back relative to the inner
hose, with the consequential result that the clamping sleeve is not
held adequately securely and firmly on the corresponding end of the
hose segment. By contrast, if the clamping sleeve is produced with
an internal diameter which is significantly larger than the
external diameter of the hose meshwork, in order to realize a large
radial spacing between said parts and prevent the meshwork ends
from colliding with the clamping sleeve during the pushing-on
process, said large radial spacing has a disadvantageous effect
during the subsequent crimping process.
[0005] It is therefore the object in particular to improve the
method mentioned in the introduction so as to minimize the risk of
the hose fixing means being displaced relative to the hose casing,
or of the hose casing being displaced relative to the inner hose,
when a hose end piece is pushed on.
[0006] It is a further object to provide a hose segment of the type
mentioned in the introduction which minimizes the risk of the hose
fixing means being displaced relative to the hose casing, or of the
hose casing being displaced relative to the inner hose, when a hose
end piece is pushed on.
SUMMARY
[0007] In the case of the method and the hose segment of the type
mentioned in the introduction, said object is achieved according to
the invention in that the hose fixing means in the form of an
adhesive tape which is adhesive on one side has a middle part which
fully surrounds the hose and which is adjoined at both sides by
hose fixing end parts, in that the hose fixing end parts bear with
their adhesive surfaces against one another, and in that the hose
fixing end parts, bearing with their adhesive surfaces against one
another, are laid against the hose such that the adhesive surface
of one of the hose fixing end parts is, by way of a subregion
protruding beyond the other hose fixing end part, held adhesively
on the hose or on the hose segment.
[0008] It is also the case in the method according to the invention
that, before a hose segment is cut to length, the hose casing is
ensheathed with a severable hose fixing means which covers the
intended cutting point before the hose segment is severed from the
hose at the cutting point by means of the cutting tool. Here, the
method according to the invention provides that the hose fixing
means fully surrounds the outer hose casing in a circumferential
direction and thus covers or wraps around the hose casing at least
over 360.degree. of the circumference. Here, the hose fixing means
is fixed on the hose casing, and/or the hose surrounded by the hose
fixing means is severed by means of a cutting tool, in such a way
that a relative displacement of the hose fixing means with respect
to the hose casing and/or of the hose casing with respect to the
inner hose is prevented.
[0009] The hose segment according to the invention has an inner
hose and an outer hose casing surrounding the inner hose. Said hose
casing is ensheathed by a cut-to-length, severable hose fixing
means which extends as far as a cutting plane formed by a face end
of the hose segment and oriented perpendicular to the longitudinal
extent of the hose segment. Said hose fixing means at least fully
surrounds the outer hose casing in a circumferential direction with
a wrap angle of at least 360.degree.. Here, the hose fixing means
is fixed on the outer hose casing such that a relative displacement
of the hose fixing means with respect to the hose casing and/or of
the hose casing with respect to the inner hose is prevented.
[0010] To now make it significantly easier for a hose fixing means
to be applied to a hose, it is provided according to the invention
that the hose fixing means in the form of an adhesive tape which is
adhesive on one side has a middle part which fully surrounds the
hose and which is adjoined at both sides by hose fixing end parts,
in that the hose fixing end parts bear with their adhesive surfaces
against one another, and in that the hose fixing end parts, bearing
with their adhesive surfaces against one another, are laid against
the hose such that the adhesive surface of one of the hose fixing
end parts is, by way of a subregion protruding beyond the other
hose fixing end part, held adhesively on the hose or on the hose
segment.
[0011] The exemplary embodiments described below can be realized in
an advantageous manner both with the method according to the
invention and also in the case of the hose segment according to the
invention:
[0012] In order, during the cutting to length of the hose segment,
to eliminate undesired transverse forces which could cause a
displacement of the hose fixing means relative to the hose casing
or even of the hose casing relative to the inner hose at least in
an axial direction, a refining embodiment of the invention provides
that the hose is cut to length by means of a cutting blade which
serves as a cutting tool and which is guided approximately
perpendicularly with respect to the hose longitudinal direction. By
means of a cutting blade of said type which is guided approximately
perpendicularly with respect to the hose longitudinal direction,
the hose segment can be cut to length from the hose at the desired
cutting point in an effective manner.
[0013] It is however also possible for the hose to be cut to length
by means of a cutting tool which generates cutting heat,
specifically preferably in such a way that the plastics material,
which becomes pasty under the action of the cutting heat, of at
least one of the constituents: hose fixing means, hose casing
and/or inner hose adhesively bonds, melts or fixes in a similar
manner, at least in regions, at least one of the adjacent
constituents in order to secure the relative position between the
hose casing and the inner hose. If a hose casing produced for
example from plastics strands is cut to length by means of such a
cutting tool that generates cutting heat, it is possible for the
plastics material of the plastics strands, which becomes pasty
under the action of the cutting heat, to adhesively bond and/or
fuse to the hose casing and/or to the inner hose such that a
relative displacement of said constituents at least in an axial
direction is prevented.
[0014] A preferred embodiment of the invention provides that a
clamping sleeve, a crimp sleeve or a sleeve-shaped hose end piece
is pushed onto that end of the hose segment which is secured by the
hose fixing means, and that the hose fixing means protrudes beyond
the inner end of the clamping sleeve, crimp sleeve or the hose end
piece and forms a kink prevention means.
[0015] Refinements of the invention will emerge from the figures in
conjunction with the claims and the description. The invention will
be described in yet more detail below on the basis of preferred
exemplary embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In the figures:
[0017] FIGS. 1 to 4 show individual method steps of a method
specified for cutting a hose segment to length, wherein a hose
fixing means in the form of an adhesive tape is applied to the hose
to be cut to length, which hose fixing means has a middle part
which fully surrounds the hose and which is adjoined at both sides
by hose end parts,
[0018] FIGS. 5 and 6 show a hose fixing means which protrudes
beyond a hose end piece and which serves as a kink prevention
means, in a side view (FIG. 5) and in a perspective illustration
(FIG. 6),
[0019] FIGS. 7 and 8 show the method steps for cutting a hose
segment to length, wherein in this case, a guillotine-like cutting
tool is used which, during the cutting process, is guided
approximately perpendicularly to the hose longitudinal
direction,
[0020] FIGS. 9 and 10 show the method steps specified for cutting a
hose segment to length, wherein, in this case, the hose is cut to
length by means of a cutting tool which generates cutting heat,
and
[0021] FIG. 11 shows a hose that has been prepared for the cutting
to length of a hose segment, which hose, in the region of the
intended cutting point, is formed as a hose encapsulation which
fully surrounds the hose in a circumferential direction in a
sub-section.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0022] FIGS. 1 to 11 illustrate different variants of a method
according to the invention which is specified for cutting a hose
segment 1 to length from a flexible hose and for the production of
a cut-to-length hose segment 1. The hose used for the hose segment
1 has an inner hose 2 and an outer hose casing 3 surrounding the
inner hose 2. The hose casing 3 is in this case in the form of a
meshwork produced using interwoven metal or plastics strands. It is
also possible to use a hybrid meshwork, the meshwork strands of
which are composed, in part, of plastic and, in part, of metal.
[0023] The hose segment 1 which is required for example for the
production of a hose segment in the form of a flexible sanitary
hose line is separated from the hose in a cutting plane oriented
perpendicular to the longitudinal extent of said hose by means of a
cutting tool at a cutting point. For this purpose, the hose casing
3 is ensheathed with a severable hose fixing means 4 which covers
the intended cutting point before the hose segment 1 is separated
from the hose at the cutting point by means of the cutting
tool.
[0024] Sanitary hose lines normally have, at both face ends, a
sleeve-shaped hose end piece 5, which is for example also in the
form of a clamping or crimping sleeve (cf. FIGS. 5 and 6). Since
the clear sleeve internal diameter of a hose end piece 5 of said
type approximately corresponds to the external diameter of the hose
casing 3, which is in particular equipped with a hose fixing means
4, it is the object to minimize the risk of the hose fixing means 4
being displaced relative to the hose casing 3, or the hose casing 3
being displaced relative to the inner hose 2, when a hose end piece
5 is pushed on.
[0025] To achieve said object, it is provided in the case of the
method variants presented here that the hose fixing means 5 fully
surrounds the outer hose encapsulation 3 in a circumferential
direction and is fixed thereon, and/or the hose surrounded by the
hose fixing means 4 is severed by means of the cutting tool, in
such a way that a relative displacement of the hose fixing means 4
with respect to the hose casing 3 and/or of the hose casing 3 with
respect to the inner hose 2 is prevented.
[0026] FIGS. 1 to 4 illustrate the method according to the
invention, in which the hose fixing means 4 is formed by an
adhesive tape which is adhesive on one side. An adhesive tape which
serves as a hose fixing means 4 can be positioned on and applied to
practically any location on a hose, which may possibly also be of a
great length. Furthermore, an adhesive tape which is adhesive on
one side offers the advantage that the adhesive tape can be pulled
tightly onto the hose such that the adhesive tape which serves as a
hose fixing means 4 fixes on the hose casing 3, and fixes the hose
casing 3 on the inner hose 2, and an inadvertent relative
displacement of said constituents 2, 3 and 4 is prevented.
[0027] In the case of the approach shown in FIGS. 1 to 4, the hose
fixing means 4 which is in the form of an adhesive tape has a
middle part 6 which fully surrounds the hose and which is adjoined
at both sides by hose fixing end parts 7, 8. Said hose fixing end
parts 7, 8 bear with their adhesive surfaces 9 against one another,
wherein the hose fixing end parts 7, 8, bearing against one another
with their adhesive surfaces 9, are laid against the hose such that
the adhesive surface 9 of one of the hose fixing end parts 7, 8 is,
by way of a subregion protruding beyond the other hose fixing end
part 8, 7, held adhesively on the hose or on the hose segment
1.
[0028] Since it is thus ensured that the hose fixing end parts 7, 8
do not protrude beyond the hose in a disruptive manner, a hose end
piece 5 can be easily pushed on over the face end of a hose.
[0029] FIGS. 5 and 6 are intended to illustrate that the width of
the hose fixing means 4 in the longitudinal direction of the hose
may be dimensioned such that the hose fixing means 4, which
protrudes beyond the inner end of the hose end piece 5, forms a
kink prevention means.
[0030] In FIGS. 7 to 10, it is shown that the hose that is fully
surrounded by the hose fixing means 4 can be severed by means of
the cutting tool such that a relative displacement of the hose
fixing means 4 with respect to the hose casing 3 and/or of the hose
casing 3 with respect to the inner hose 2 is prevented. For this
purpose, it is provided in FIGS. 7 and 8 that the hose is cut to
length by means of a cutting blade 12 which serves as a cutting
tool and which is guided approximately perpendicularly to the hose
longitudinal axis.
[0031] In the exemplary embodiment illustrated in FIGS. 9 and 10,
the hose is cut to length by means of a cutting tool 13 which
generates cutting heat, specifically in such a way that the
plastics material, which becomes pasty under the action of the
cutting heat, of at least one of the constituents: hose fixing
means 4, hose casing 3 and/or inner hose 2 adhesively bonds or
fuses at least in regions to at least one of the adjacent
constituents 2, 3, 4. Instead of the, in this case, soldering
iron-like cutting tool 13, use may if appropriate be made of a
laser apparatus with a laser beam that likewise generates cutting
heat.
[0032] FIG. 11 shows that the hose fixing means 4 may also be
formed, by means of injection molding, as a hose sheath which fully
surrounds the hose casing 3 in a circumferential direction in a
sub-section.
[0033] Regardless of whether an adhesive tape, a shrink-fit hose or
a hose sheath produced by means of injection molding is used for
the hose fixing means 4, it is expedient for the hose fixing means
to have a small thickness, and preferably a thickness of 0.5/100th
to 8/100th mm.
* * * * *