JP5429084B2 - Tube processing apparatus and tube flattened product manufacturing method - Google Patents

Description

  The present invention relates to a technique for cutting a tube into a desired length after incision.

  Conventionally, when a wire harness is protected by a tube formed of a synthetic resin such as rubber, it is necessary to cut the cut tube along the width direction after the tube is cut vertically.

  An apparatus for forming a slit in a tube is disclosed in Patent Document 1.

  In the slit forming apparatus disclosed in Patent Document 1, a cutter blade is provided on the outer periphery of the inner guide that guides the inner peripheral surface of the tube. The inner guide and the cutter blade are supported by the bearing means so as to be displaceable in the circumferential direction of the tube. And when forming a slit with a cutter blade, the dent of a tube is corrected by an inner guide. Further, even if the tube is twisted, a slit can be formed in the tube while the cutter blade follows the bearing means.

JP-A-9-155628

  However, in the slit forming device disclosed in Patent Document 1, after the slit is formed in the tube, the incised tube is greatly bent or bent until the tube is cut to a predetermined length. , May twist. As a result, the cut surface for cutting the cut tube into a predetermined length is unintentionally skewed with respect to the longitudinal direction of the cut tube, and the cut surface of the cut tube becomes uneven. there were.

  Therefore, an object of the present invention is to make it possible to align the cut surfaces for cutting the cut tube as much as possible.

  In order to solve the above-described problem, a first aspect is a tube processing apparatus that cuts and cuts a tube, the tube cutting mechanism having a cutting blade capable of cutting the tube along its longitudinal direction, A tube cutting mechanism for cutting the tube along its width direction, and the tube opening mechanism from the tube opening mechanism in a state where the cut tube is expanded in a flat state and restricted within a certain range in the width direction. A guide mechanism for guiding the cutting mechanism.

  A 2nd aspect is a tube processing apparatus which concerns on a 1st aspect, Comprising: The said guide mechanism is arrange | positioned so that the side edge part of the said tube incised can be penetrated, and each opening is facing. A pair of U-shaped grooves formed, and both side edges of the cut-out tube are guided through the pair of U-shaped grooves, so that the cut-out tube is expanded in a flat state. It is regulated within a certain range in the width direction.

  A third aspect is the tube processing apparatus according to the first aspect, wherein the guide mechanism abuts against at least one roller for expanding the incised tube and both side edges of the incised tube. And a width direction restricting portion for restricting the tube cut in the width direction within a certain range.

  In order to solve the above-mentioned problem, a fourth aspect is a tube processing apparatus for cutting an incised tube, and guides the tube while cutting the incised tube into a flat state and regulating it within a certain range in the width direction. And a tube feed mechanism for feeding the cut tube, and a tube cutting mechanism for cutting the tube fed by the tube feed mechanism while maintaining a flat state.

  In order to solve the above-mentioned problem, a fifth aspect is a method for producing a tube flattened product by incising and cutting a tube, wherein (a) a step of cutting the tube along its longitudinal direction, and (b) the above step ( a step of guiding the tube incised by a) in a state where the tube is flattened and regulated within a certain range in the width direction; and (c) the incision sent while being guided in the step (b). And cutting the tube that has been cut along the width direction thereof.

  According to the first aspect, the incised tube is guided toward the tube cutting mechanism in a state where it is expanded in a flat state and is regulated within a certain range in the width direction. For this reason, in the tube cutting mechanism, bending, bending, and twisting of the cut tube are suppressed. For this reason, in a tube cutting mechanism, the cut surface for cut | disconnecting the cut | disconnected tube can be arrange | equalized as much as possible.

  According to the second aspect, by inserting and guiding both side edges of the cut tube into the pair of U-shaped grooves, the cut tube is expanded into a flat state and within a certain range in its width direction. Can be regulated. Moreover, the operation | work which sets the cut | disconnected tube to a guide mechanism is easy.

  According to the tube processing apparatus according to the third aspect, it is possible to regulate the cut tube within a certain range in the width direction while more reliably expanding the tube cut by the roller into a flat state.

  According to the fourth aspect, the incised tube is guided in a flat state while being regulated within a certain range in the width direction. And the tube sent out by the tube feeding mechanism is cut in a state where the flat state is maintained. For this reason, at the time of cutting in the tube cutting mechanism, bending, bending, and twisting of the cut tube are suppressed. Thereby, the cut surface for cut | disconnecting the cut | disconnected tube can be arrange | equalized as much as possible.

  According to the fifth aspect, the incised tube is guided in a flat state and in a state of being regulated within a certain range in the width direction, and the tube thus guided is cut along the width direction. . For this reason, when cutting the tube in the step (c), bending, bending and twisting of the cut tube are suppressed, and the cut surfaces for cutting the cut tube can be aligned as much as possible.

It is the schematic which shows the whole structure of the tube processing apparatus which concerns on embodiment. It is a schematic perspective view which shows a guide mechanism. It is a schematic perspective view which shows the guide mechanism which concerns on a modification. It is a schematic perspective view which shows the guide mechanism which concerns on a modification. It is a schematic perspective view which shows the guide mechanism which concerns on a modification. It is a schematic perspective view which shows the state which is guiding the tube cut | disconnected by the guide mechanism. It is a schematic sectional drawing in the VII-VII line of FIG. It is a perspective view which shows the guide mechanism which concerns on a modification.

  Hereinafter, the tube processing apparatus and the tube flattened product manufacturing method according to the embodiment will be described.

  FIG. 1 is a schematic diagram showing the overall configuration of the tube processing apparatus 20. Here, the tube 10 to be processed is formed into a flexible tubular shape with a circular cross section by a synthetic resin such as rubber. The tube 10 is cut to a desired length after being incised so as to be vertically divided. The tube flattened product 12 is obtained by cutting the tube 10 and cutting it as desired. For example, the tube flattened product 12 is attached to the wire harness so as to cover the wire harness, and is wound and fixed with an adhesive tape or the like. The tube processing apparatus 20 and the tube flattened product manufacturing method are apparatuses and methods for cutting the tube 10 to a desired length.

  The tube processing apparatus 20 includes a tube opening mechanism 24, a tube cutting mechanism 30, and a guide mechanism 40. In this tube processing apparatus 20, the tube 10 wound and accommodated on a reel or the like (not shown) is fed while being pulled out by the tube feeding mechanism 22. As the tube feed mechanism 22, for example, a configuration in which at least one of the pair of feed rollers 22a is rotationally driven by a motor or the like while the tube 10 is sandwiched between the pair of feed rollers 22a is employed. In addition, the tube feed mechanism 22 may be configured such that the tube 10 is gripped by a gripping member or the like and pulled out by a predetermined length. The tube 10 is incised in a vertically split shape by the tube opening mechanism 24 while being fed. The cut tube 10 is sent to the tube cutting mechanism 30 while being guided by the guide mechanism, and is cut to a desired length by the tube cutting mechanism 30.

  Hereinafter, each configuration will be described more specifically.

  The tube cutting mechanism 24 is configured to be able to continuously cut the tube 10 along its longitudinal direction. Here, the tube cutting mechanism 24 has a rod-shaped body 26 and a cutting blade 28. The rod-shaped body 26 is formed in a rod shape that can be inserted into the tube 10, here, a rod shape having an outer diameter smaller than the inner diameter of the tube 10. In order to easily dispose the rod-shaped body 26 in the tube 10, one end of the rod-shaped body 26 (the end facing the upstream side in the feeding direction of the tube 10) is gradually reduced in diameter toward the distal end side. It is formed in a tapered shape. The cutting blade 28 is a plate-like blade formed of metal or the like, and is provided on the outer peripheral portion of the rod-like body 26. The cutting blade 28 is disposed along the axial direction of the rod-like body 26 at the outer peripheral portion of the rod-like body 26, and one side edge portion thereof (the end portion facing the upstream side in the feeding direction of the tube 10) uses the tube 10. It is formed in the cutting edge part 28a which can be cut | disconnected. And when the tube 10 is pulled out in the feed direction downstream side with the rod-shaped body 26 inserted in the tube 10, the cutting edge portion 28a is pressed against the tube 10, and the tube 10 is continuously split vertically. An incision is made. Further, the blade edge portion 28 a is inclined toward the downstream side in the feed direction of the tube 10 toward the central axis of the rod-like body 26. For this reason, when the tube 10 is cut by the cutting edge portion 28 a, the tube 10 moves to the proximal end portion side of the cutting edge portion 28 a and is pressed against the outer peripheral surface of the rod-shaped body 26. As a result, the tube 10 can be more reliably opened linearly.

  But the tube cutting mechanism 24 should just be able to cut the tube 10 along the longitudinal direction, and the structure which cut | disconnects the tube 10 with a circular blade etc. may be sufficient as it.

  The tube cutting mechanism 30 is configured to be able to cut the cut tube 10 along its width direction. Here, the tube cutting mechanism 30 includes a pair of shearing blades 32 and a blade driving unit 34 that drives the pair of shearing blades 32 to approach and separate from each other. The pair of shearing blades 32 has a blade edge portion 32 a having a length dimension that is equal to or larger than the width dimension of the tube 10 that has been cut. The pair of shearing blades 32 are arranged opposite to each other so that the cut tube 10 is sandwiched from both sides in the middle of the path through which the cut tube 10 is sent. Here, one shearing blade 32 is fixed below the lower surface of the cut tube 10, and the other shearing blade 32 is disposed above the upper surface of the cut tube 10. The blade driving unit 34 is configured by a linear actuator such as an air cylinder, a hydraulic cylinder, or a linear motor, and is configured to drive the other shearing blade 32 toward and away from the one shearing blade 32. Yes. In addition, the structure which drives both of a pair of shearing blades 32 approaching and separating may be sufficient. Then, the tube 10 incised between the pair of shearing blades 32 is disposed, and then the other shearing blade 32 is brought close to the one shearing blade 32, whereby the tubes incised by the pair of shearing blades 32 are provided. 10 is sheared along its width direction.

  The tube cutting mechanism may be configured to cut the cut tube 10 along the width direction thereof, and may be configured to cut with a circular blade or the like. Moreover, it is not essential for the tube cutting mechanism to cut the cut tube 10 linearly along a direction orthogonal to the longitudinal direction. The tube cutting mechanism may cut in an oblique direction with respect to the longitudinal direction of the cut tube 10 or may be cut in a wave shape. In other words, the tube cutting mechanism can cut the cut tube 10 so as to divide the tube 10 in the longitudinal direction, and at the time of the cutting, a constant cutting form (the shape of the cut surface, the cutting) It only needs to be configured so as to be cut in the extending direction of the surface.

  2 is a schematic perspective view showing the guide mechanism 40, FIG. 3 is a schematic perspective view showing a state in which the tube 10 cut by the guide mechanism 40 is being guided, and FIG. 7 is a view taken along line VII-VII in FIG. It is a schematic sectional drawing in a line.

  As shown in FIGS. 1, 2, 6, and 7, the guide mechanism 40 is a tube opening mechanism in a state where the incised tube 10 is expanded in a flat state and restricted within a certain range in the width direction. It is configured to be able to guide from 24 toward the tube cutting mechanism 30.

  More specifically, the guide mechanism 40 has a pair of regulating members 42 and is fixed on the base 46.

  Each regulating member 42 is made of resin, metal, or the like, and has a U-shaped groove 43g. More specifically, the regulating member 42 is formed in a generally U-shaped shape in cross-sectional view as a whole, with one side portion of the pair of pressing pieces 43 connected by the side piece 44. A gap larger than the thickness dimension of the cut tube 10 is provided between the pair of presser pieces 43, and the side edge portion of the cut tube 10 can be inserted through the pair of presser pieces 43. Has been. Moreover, the inner surface of the side piece 44 is provided in the side between a pair of pressing pieces 43, and the side edge part of the cut tube 10 contacts the inner surface of the side piece, so that the side piece 44 is moved to the side piece 44 side. Movement is regulated.

  The pair of regulating members 42 are fixed on the base 46 with the openings of the respective U-shaped grooves 43g facing each other. Here, the pair of restricting members 42 are fixed to the base 46 using magnetic force. That is, the regulation member 42 is formed of a material (metal or the like) that can be adsorbed by a magnet, and a magnet sheet is provided on the surface of the base 46. The pair of restricting members 42 are fixed to the base 46 by the force with which the magnet sheet attracts the restricting members 42 with magnetic force. The entire regulating member 42 does not need to be formed of a material that can be attracted by a magnet, and only the pressing piece 43 on one side or only the outer surface side portion of the pressing piece 43 on one side can be attracted by a magnet. It may be made of any material. Contrary to the above, a magnet (a metal plate or the like) that can be attracted by magnetic force may be provided on the base 46 side, with a magnet attached and fixed on the regulating member 42 side. Further, the restriction member 42 may be fixed to the base 46 by screwing, a lock structure using unevenness, or the like.

  By adopting a configuration in which the position where the pair of regulating members 42 are fixed to the base 46 can be adjusted, the distance between the pair of regulating members 42 can be adjusted. Usually, the distance between the pair of regulating members 42 is adjusted according to the size of the tube 10. In other words, the distance between the inner surfaces of the pair of side pieces 44 is such that the tube 10 cut through the pair of side pieces 44 can be inserted, more specifically, the width dimension of the cut tube 10. The same or slightly larger dimensions are set.

  The guide mechanism 40 is not necessarily configured to include the pair of regulating members 42 described above, and a pair of U-shaped grooves 43Bg are formed in a single member 43B as in the guide mechanism 40B of FIG. It may be a configuration. Further, as in the guide mechanism 40C of FIG. 4, a substantially L-shaped guide side portion 41C is fixed to the base 46 by screwing or the like, and the upper surface of the base 46 and the inner surface of the guide side portion 41C A configuration in which a pair of letter-shaped grooves 43Cg is formed may be employed. Further, as in the guide mechanism 40D of FIG. 5, a guide main body 41D having a groove 41Dg that opens downward is fixed on the base 46, and the upper surface of the base 46 and both sides of the groove 41Dg of the guide main body 41D are fixed. A configuration in which a pair of U-shaped grooves 43 </ b> Dg are formed by the surface may be used. That is, any structure may be used as long as grooves that can guide both side edges of the cut tube 10 are formed.

  Then, both side edges of the tube 10 cut by the tube cutting mechanism 24 are continuously drawn out by the tube feeding mechanism 22 through the pair of U-shaped grooves 43g and sent to the tube cutting mechanism 30. (See FIG. 6). Then, the side edges of the tube 10 cut by the tube opening mechanism 24 are guided so as to pass through the pair of U-shaped grooves 43g, so that the cut tube 10 is expanded so as to be in a flat state. . Further, when passing through the pair of U-shaped grooves 43g, both side edges of the tube 10 are in contact with the inner surface of the side piece 44 so as to be positioned between the inner surfaces of the pair of side pieces 44 in the width direction. Is done. Then, the incised tube 10 is sent out toward the tube cutting mechanism 30 and cut along the width direction in a state where the tube 10 is expanded in a flat state and regulated within a certain range in the width direction. Become.

  The guide mechanism 40 is preferably provided as close as possible to the tube cutting mechanism 24 and the tube cutting mechanism 30. That is, it is preferable that the guide mechanism 40 is provided near the tube opening mechanism 24 within a range in which the side edge portion of the cut tube 10 can be guided as it is without causing twisting or the like. Moreover, it is preferable that the guide mechanism 40 is provided near the tube cutting mechanism 30 within a range in which the tube 10 can be cut in a state in which the action of expanding the cut tube 10 into a flat state is affected.

  According to the tube processing apparatus 20 and the tube flattened product manufacturing method configured as described above, the tube opening mechanism 24 cuts the tube 10 along the longitudinal direction thereof, and the tube 10 thus opened is cut by the guide mechanism 40. The guide is guided in a flat state while being restricted within a certain range in the width direction. Then, the tube 10 that is flattened and restricted within a certain range is cut in the width direction by the tube cutting mechanism 30. For this reason, the tube flattened product 12 can be manufactured by cutting the tube 10 by the tube cutting mechanism 30 in a state in which bending, bending, twisting, and the like are suppressed in the cut tube 10. For this reason, the cut surface for cut | disconnecting the cut | disconnected tube 10 can be aligned as much as possible. For example, it can also arrange so that it may become a cut surface orthogonal to the longitudinal direction of tube 10.

  Further, since the tube 10 is smoothly fed in a flat state and regulated within a certain range, the tube 10 is prevented from being caught in the middle of processing, and the processing work stoppage of the tube 10 is suppressed, The processing can be performed smoothly.

  Further, by inserting and guiding both side edges of the cut tube 10 into the pair of U-shaped grooves 43g, the cut tube 10 is flattened and regulated in a certain range in the width direction. Therefore, the work of setting both side edges of the cut tube 10 in the pair of U-shaped grooves 43g is facilitated.

  Further, by adjusting the distance between the pair of U-shaped grooves 43g, it is possible to easily cope with the size change of the tube 10.

  FIG. 8 is a perspective view showing a guide mechanism 140 according to a modification.

  The guide mechanism 140 includes a roller 142 and a width direction restricting portion 146.

  The roller 142 is configured to spread the tube 10 that is cut between the roller 142 and the base 144 that is an opposing member. More specifically, one roller 142 is rotatably provided on a base 144 between the tube cutting mechanism 24 and the tube cutting mechanism 30. A gap is provided between the base 144 and the roller 142 so that the cut tube 10 can be inserted while being expanded. The size of the gap is preferably about the same as the thickness of the tube 10, but may be larger or smaller than the thickness of the tube 10 as long as the tube 10 can be expanded in a flat state. Note that the tube 10 may be spread in a flat state by being sandwiched between a pair of rollers. Moreover, a roller may be provided in several places along the feed direction of the tube 10, and the tube 10 may be extended in several places.

  The width-direction restricting portion 146 has a pair of restricting members 146 a that are erected on the downstream side of the roller 142 so as to be located outside both sides of the cut tube 10. The distance between the pair of restricting members 146a is substantially the same as the dimension that allows the tube 10 cut through the pair of restricting members 146a to be inserted. The dimensions are set to be slightly larger.

  The restricting member may be provided on the outer periphery of the roller.

  When the cut tube 10 is pulled out through the roller 142 and the base 144, the tube 10 is pushed and spread between the roller 142 and the base 144 in a flat state. In addition, the tube 10 that has been spread in a flat state is regulated so as to be positioned within a certain range in the width direction by the pair of regulating members 146a. In addition, the tube cutting mechanism 30 can cut the tube 10 that has been flattened in this manner and restricted within a certain range in the width direction.

  For this reason, the cut surface for cut | disconnecting the cut | disconnected tube 10 can be arrange | equalized as much as possible like the said embodiment.

  Further, when the tube 10 cut between the base 144 and the roller 142 is guided to a flat state, the roller 142 is driven and rotated as the tube 10 passes, so that the tube 10 can be pulled out smoothly. . In particular, since the tube 10 can be pulled out smoothly even if the distance between the roller 142 and the base 46 is reduced, the tube 10 can be made flatter by reducing the distance between the roller 142 and the base 46. Can be spread.

  Moreover, in the tube processing apparatus 20 in the said embodiment, the tube cutting mechanism 24 may be abbreviate | omitted. In this case, the tube 10 is cut in advance vertically at another location and wound and accommodated. When the tube 10 is cut, the tube 10 that has been cut and accommodated in advance is pulled out and guided. Cutting is performed via the mechanism 40, the tube feed mechanism 22, and the tube cutting mechanism 30.

  Even in this case, the tube 10 expanded in the flat state by the guide mechanism 40 is sent out by the tube feed mechanism 22 and cut by the tube cutting mechanism 30 while the flat state is maintained. For this reason, similarly to the above, when the tube cutting mechanism 30 cuts, the tube 10 is prevented from being bent, bent, or twisted, and the cut surfaces for cutting the cut tube 10 can be aligned as much as possible.

DESCRIPTION OF SYMBOLS 10 Tube 12 Tube flattened product 20 Tube processing apparatus 24 Tube cutting mechanism 28 Cutting blade 30 Tube cutting mechanism 40 Guide mechanism 42 Control member 43g U-shaped groove 140 Guide mechanism 142 Roller 144 Base 146 Width direction control part 146a Control member

Claims (5)

A tube processing apparatus for cutting and cutting a tube,
A tube opening mechanism having a cutting blade capable of cutting the tube along its longitudinal direction;
A tube cutting mechanism for cutting the incised tube along its width direction;
A guide mechanism that guides the tube opening mechanism from the tube opening mechanism toward the tube cutting mechanism in a state in which the incised tube is expanded in a flat state and restricted within a certain range in the width direction;
A tube processing apparatus comprising: The tube processing apparatus according to claim 1,
The guide mechanism has a pair of U-shaped grooves that can be inserted through the side edges of the cut-out tube and are opposed to each other, and both sides of the cut-out tube. A tube processing apparatus in which an edge is guided through the pair of U-shaped grooves so that the cut tube is expanded in a flat state and is restricted within a certain range in the width direction. The tube processing apparatus according to claim 1,
The guide mechanism includes at least one roller for expanding the cut tube, and a width direction for restricting the cut tube by contacting both side edges of the cut tube within a certain range in the width direction. A tube processing apparatus comprising: a restricting portion; A tube processing device for cutting an incised tube,
A guide mechanism that guides the tube that has been cut open while being flattened and regulated within a certain range in the width direction;
A tube feeding mechanism for feeding the incised tube;
A tube cutting mechanism for cutting the tube delivered by the tube feeding mechanism in a state where the flat state is maintained;
A tube processing apparatus comprising: A tube flattened product manufacturing method of cutting and cutting a tube,
(a) cutting the tube along its longitudinal direction;
(b) a step of guiding the tube cut out in the step (a) in a state where the tube is expanded in a flat state and restricted within a certain range in the width direction; and
(c) cutting the incised tube sent while being guided in the step (b) along its width direction;
A tube flattened product manufacturing method comprising:

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