JP6539494B2 - Tube cutting device - Google Patents

Description

  The present invention relates to a tube cutting apparatus for cutting a tube of a predetermined length from a wound tube.

  Conventionally, as a tube cutting device for cutting a tube assembled to a wire harness used for electrical wiring of a car or the like, a tube cutting device for drawing out and cutting a wound tube for a predetermined length is used (see, for example, Patent Document 1).

JP-A-6-344215

  However, in the conventional tube cutting device, for example, when the wound tube is bound for transportation, the bound portion is crushed, and the collapsed portion of the tube becomes the device when the tube is pulled out by the device. By being caught, it has become the cause of causing a device trouble or a cut-off dimensional defect of the tube.

  Such a problem can be solved by correcting the collapsed portion of the tube before setting the wound tube in the apparatus, but there is a problem that it takes time and effort.

  The present invention has been made in view of the above, and even when a part of the tube is crushed, the crushed portion of the tube is pulled out from the wound tube without being caught by the device, and the predetermined size is obtained. It is an object of the present invention to provide a tube cutting device capable of cutting into

In order to solve the problems described above and to achieve the object, a tube cutting device according to claim 1 of the present invention is a gripping and extracting part that grips a part of the tube from a wound tube and pulls out a predetermined length; A tube cutting device having a cutting mechanism including a grip fixing portion for gripping and fixing a part of the drawn tube and a cutting portion for cutting the tube pulled out by the grip and drawing portion in a direction orthogonal to the drawing direction And adjusting the distance between the wound tube and the cutting mechanism to a distance at which another device can be disposed, and gradually changing the direction of the tube pulled out from the wound tube. A tube direction gradually changing portion for guiding to a cutting mechanism portion, and a hole for guiding by guiding the tube, and the outside of the tube expanded by the collapse of the tube A tube insertion guide hole in which the dimension of the hole is adjusted to include a width slightly larger than the width is formed, and at least one tube insertion guide portion provided in the induction section of the tube by the tube direction gradual change portion And the tube direction gradual change portion has a tube guiding support portion for supporting the tube so as to draw out a predetermined section at a position exceeding a predetermined height, and the tube guiding support portion is the winding A gradual upper guiding support for guiding the tube pulled out from the taken tube to a height position near the ceiling where the tube cutting device is installed, and a straight line for supporting the tube so as to draw the tube in a substantially straight line for a predetermined section A guiding support portion, and the tube insertion guide portion is provided in a section for drawing the tube substantially linearly by the linear guiding support portion Characterized in that that.

In the tube cutting device according to a second aspect of the present invention, in the above-mentioned invention, the tube is a tube having a circular cross-sectional shape whose inner diameter and outer diameter are constant in the axial direction.

  The tube cutting device according to claim 1 of the present invention adjusts the distance between the tube wound by the gradually changing portion in the tube direction and the cutting mechanism, and gradually changes the direction of the tube drawn from the wound tube. However, since the tube pulled out from the wound tube toward the cutting mechanism is tensioned in the pulling-out direction by the grip and pull-out portion so that the tube is not bent significantly, the tube is crushed An external force that corrects crushing is applied to the portion, and the tube insertion guide hole of the tube insertion guide portion is adjusted to a dimension in consideration of the width of the crushed portion of the tube. Even in some cases, the crushed part of the tube is pulled out of the wound tube without being caught in the device and cut to a predetermined size. It can be.

Tube cutting apparatus according to claim 1 of the present invention, since the tube direction gradually changing portion is so drawn out a predetermined interval at a position beyond the predetermined height above the tube by the tube leading support portion, the tube direction By adjusting the guiding section of the tube by the gradually changing part to a high position, the space can be effectively used to draw the predetermined section of the tube.

Tube cutting apparatus according to claim 1 of the present invention, by the linear induction support unit, since the tube drawn substantially linearly is inserted into the tube insertion guide hole, and more deformation of the collapsed portion of the tube The part crushed in the suppressed state can be inserted into the tube insertion guide hole.

The tube cutting device according to claim 2 of the present invention is a device for collapsing a portion of a tube from a wound tube with respect to the tube in which a collapsing circular shape having a constant inner diameter and outer diameter in the axial direction is easily generated. It can be pulled out and cut to a predetermined size without being caught.

FIG. 1 is a schematic view of a wire harness assembly system incorporating a tube cutting device according to an embodiment of the present invention. FIG. 2 is a perspective view of a tube cutting device according to an embodiment of the present invention. FIG. 3 is an explanatory view for explaining an outline of the tube direction gradual change part. 4 is a perspective view of the periphery of the cutting mechanism of FIG. 1 as viewed from a direction different from that of FIG. FIG. 5A is a view around the tube insertion guide portion, and FIG. 5B is an enlarged view of one tube insertion guide hole of FIG. 5A. 6A is a perspective view of the tube, and FIG. 6B is a perspective view of the tube in a partially collapsed state, and FIG. 6C is a wound tube in a state of being bound by a plurality of binding bands. FIG. FIG. 7 is a view for explaining that the tube cutting device is in a state where it can pull out the tube from the wound tube. FIG. 8 is a view for explaining a state in which the tube cutting device pulls out the tube by the grip and pull-out portion. FIG. 9 is a view for explaining a state in which the tube cutting device completes pulling out of the tube by the grip and pull-out portion and cuts the tube by the cutting portion.

  The preferred embodiments of the tube cutting device according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic view of a wire harness assembly system 100 incorporating a tube cutting device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the tube cutting device 1 according to the embodiment of the present invention. FIG. 3 is an explanatory view for explaining an outline of the tube direction gradual change unit 10. 4 is a perspective view of the vicinity of the cutting mechanism 40 of FIG. 1 as viewed from a direction different from that of FIG. FIG. 5A is a view around the tube insertion guide portion 30, and FIG. 5B is an enlarged view of one tube insertion guide hole 31 of FIG. 6 (a) is a perspective view of the tube C, FIG. 6 (b) is a perspective view of the tube C in a partially collapsed state, and FIG. It is a perspective view of the taken tube C1.
A tube cutting device 1 according to an embodiment of the present invention is incorporated in a wire harness assembly system 100, which is a system that assists in a series of operations related to the assembly of a wire harness used for electrical wiring of a car or the like.

  In the wire harness assembly system 100, as shown in FIG. 1, a plurality of work areas A corresponding to a series of work related to the assembly of the wire harness are patrolled by a plurality of movable work tables 110 and arranged in each work area A The wire harness is assembled by assembling various parts of the wire harness on the movable work table 110 moved by the person to the work area A in charge.

  The wire harness assembly stem 100 controls the movement of the movable work table 110 and the operation of each device including the tube cutting device 1 by a control device (not shown).

The tube cutting apparatus 1 according to the embodiment of the present invention grips and fixes a part of the drawn tube C by holding a part of the tube C from the wound tube C and pulling out a predetermined length. It has a cutting mechanism portion 40 including a grip fixing portion 50 and a cutting portion for cutting the tube C pulled out by the grip extraction portion 50 in a direction orthogonal to the extraction direction.
Moreover, in this embodiment, three tube cutting devices are arranged side by side in a predetermined work area A, and each tube cutting device is provided at a supply destination (not shown) on the movable work table 110 which is moved and arranged in the predetermined work area A. A tube C cut into a predetermined length is supplied by 1.
The number of installed tube cutting devices 1 is not limited to three, and as long as it is one or more, any other number may be installed.

The tube cutting device 1 adjusts the distance between the cutting mechanism 40, the wound tube C and the cutting mechanism 40, and gradually changes the direction of the tube C pulled out from the wound tube C while changing the direction of the cutting mechanism The tube direction gradually changing portion 10 for guiding to 40 and the hole for guiding by inserting the tube C, the hole dimension so as to include a width slightly larger than the outer diameter width of the tube C expanded by the collapse of the tube C The tube insertion guide hole 31 is formed by adjusting the tube insertion guide portion 30 provided in the induction section of the tube by the tube direction gradually changing portion 10, and the tube C cut into a predetermined length by the cutting mechanism portion 40 A tube for temporarily holding (hereinafter referred to simply as “cutting tube”) before supplying it to the supply destination of the cutting tube C provided on the movable work bench 110 Having at the holding portion 80, a.
In addition, hereinafter, when the wound tube C and the cut tube C are distinguished, the code of the wound tube C is "C1" and the code of the cut tube C is "C2".

First, the tube C will be described.
The tube C is used as one of the assembly parts of the wire harness, and protects the electric wire. The tube C is made of an insulating material such as a synthetic resin, and as shown in FIG. 6A, it is a so-called round tube having a circular cross-sectional shape having a constant inner diameter and outer diameter in the axial direction. is there.
When transporting such a tube C in a wound state, as shown in FIG. For this reason, the tube C is crushed at the portion where the wound tube C1 is bound by the binding band B (see FIG. 6B).
As illustrated in FIG. 3, the tube C is pulled out by the tube cutting device 1 in a state of being attached to the reel R, as illustrated in FIG. 3.
The tube C is not limited to a round tube, and may be another tube. For example, the tube C may be a so-called corrugated tube having a flexible bellows shape.

Next, the tube direction gradual change unit 10 will be described.
The tube direction gradual change unit 10 includes the wound tube C1 and the tube cutting device 1 so that the tube C drawn out from the wound tube C1 can be guided to the cutting mechanism 40 while gradually changing the direction. Are spaced relatively long.

  The tube direction gradual change portion 10 has a tube guiding support portion 20 for guiding the cutting mechanism portion 40 while supporting the tube C pulled out of the tube C1 wound up by, for example, combining the pipe members.

The tube guiding support portion 20 supports the tube C so as to draw out a predetermined section at a position exceeding a predetermined height.
The tube guiding support portion 20 is a tube C positioned at a predetermined height by the gradually upper guiding support portion 21 for guiding the tube C drawn out from the wound tube C1 gradually upward, and the gradually upper guiding support portion 21. And a linear guiding support 22 for guiding the cutting mechanism 40 to approach the cutting mechanism 40 in a substantially linear manner while keeping the height substantially constant.

Gradually, the upper guide support portion 21 guides the tube C upward in a stepwise manner along the direction in which the tube C is pulled out from the wound tube C1 toward the cutting mechanism portion 40.
In this embodiment, the target height for guiding the tube C by the upper guiding support 21 gradually becomes near the ceiling of the place where the tube cutting device 1 is installed.
This is to guide the tube C pulled out from the wound tube C1 to the cutting mechanism section 40 by effectively utilizing the space near the ceiling which does not interfere with the worker or other devices.

The linear guiding support portion 22 supports the tube C so as to draw out a predetermined section in a substantially linear manner.
The linear guide support portion 22 guides the tube C, which has been guided to a predetermined height position by the upper guide support portion 21 gradually, to a substantially linear shape near the cutting mechanism portion 40 while maintaining a constant height. .
The tube C drawn out from the support portion of the tube C constituting the linear induction support portion 22 disposed on the side closest to the cutting mechanism portion 40 gradually changes its direction toward the lower cutting mechanism portion 40. ing.

  Since such a tube direction gradual change unit 10 guides the tube C drawn out from the wound tube C1 to the cutting mechanism 40 while gradually changing the direction, the cutting mechanism from the wound tube C1 A withdrawal section of the tube C extending in the withdrawal direction can be provided between the portion 40 and the portion 40 with less bending, and the collapsed portion of the tube C is in a state of being easily corrected.

Next, the tube insertion guide portion 30 will be described.
The tube insertion guide portion 30 has a guide main body portion 32 which is a plate-like member forming the tube insertion guide hole 31.

In this embodiment, the respective tube insertion guide holes 31 corresponding to the three tube cutting devices 1 are formed side by side in one guide main body portion 32.
The guide main body 32 may be provided corresponding to each of the three tube cutting devices 1.

As shown in FIG. 5, the tube insertion guide hole 31 has a circular shape, and the inner diameter of the hole is adjusted to have a width W2 slightly larger than the width W1 of the crushed portion P of the tube C.
For example, when the value of the maximum width from the measured data of the crushed portion P of the tube C is made the width of the crushed portion P of the tube C, the diameter of the tube insertion guide hole 31 is adjusted to be slightly larger than the maximum width. Good.

The tube insertion guide portion 30 is provided in a section from which the tube C is drawn out substantially linearly by the linear guide support portion 22. More specifically, the tube insertion guide portion 30 is provided with the guide main body portion 32 in a pipe member constituting the linear guide support portion 22.
Thereby, since the tube C which is supported by the linear induction supporting portion 22 at a substantially constant height and is drawn in a substantially linear shape is inserted into the tube insertion guide hole 31, the deformation of the crushed portion P of the tube C is further suppressed The portion P which has been crushed in the bent state can be inserted into the tube insertion guide hole 31.

Next, the cutting mechanism unit 40 will be described.
The cutting mechanism unit 40 has a grip fixing unit 50, a grip pulling out unit 60, and a cutting unit 70.
The cutting mechanism portion 40 is a grip fixing portion 50 from the upper side to the lower side on the surface of a rectangular plate-like member 90 supported by a support member such as a pipe member in a state in which the longitudinal direction is inclined in the vertical direction. The respective units are arranged in the order of the cutting unit 70 and the holding and pulling unit 60.
In this embodiment, the cutting mechanism sections 40 of the three tube cutting devices 1 are provided side by side in the lateral direction.

  The grip fixing portion 50 presses and holds the tube C between a surface on the plate-like member 90 to which the tube C is drawn and moved by pressing a part of the tube C from one side, and It has the drive part 52 which drives so that the pressing part 51 may be moved in the direction which clamps the tube C, and the detaching direction.

  The gripping and pulling out portion 60 has a gripping portion 61 for gripping and fixing a part of the tube C, a driving portion 62 for driving the gripping portion 61 to move in a direction for gripping the tube C, and a gripping direction, And a drawing direction drive unit 63 which drives the sheet to move along the drawing direction D.

  The cutting unit 70 has a cutting blade 71, a cutter driving unit 72 that drives the cutting blade 71 to move in the cutting direction of the tube C, and a drawing direction by passing the tube C drawn from the wound tube C1 through a hole. And a cutting guide portion 73 formed with a cutting guide slit 73 a for guiding the cutting blade 71 in the cutting direction so as to apply to both side surfaces of the cutting blade 71 while guiding to D.

Next, the temporary tube holder 80 will be described.
The tube temporary holding unit 80 is a cutting tube housed in the tube housing main body 81 by opening and closing the lower end opening of the tube housing main body 81 storing the tube C2 cut by the cutting unit 70 and the lower end opening of the tube housing main body 81 And a shutter unit 82 for dropping C2 downward.

The tube housing main body portion 81 has a cylindrical shape formed to arrange a cylindrical hole penetrating vertically in the lower position of the cutting portion 70, and the cutting tube C2 is inserted in the cylinder with the lower end opening closed by the shutter portion 82. Can be accommodated.
In this embodiment, the tube housing main body 81 also has a function of guiding the cutting tube C2 to fall toward a predetermined position.

  The shutter portion 82 is arranged in the lateral direction from the lower end opening of the tube accommodating main body portion 81 disposed at one end side in the lateral direction so that the lower end openings of the tube accommodating main body portions 81 of the three tube cutting devices 1 can be opened and closed collectively. It has the plate-like door part 82a extended to the lower end opening of the tube accommodation main-body part 81 arrange | positioned at the other end side, and the drive part not shown which drives a door part in the opening and closing direction.

  Such a temporary tube holding portion 80 holds the respective tube housing main bodies by closing the shutter portion 82 until the movable work table 110 is moved and disposed in the work area A in which the tube cutting device 1 is installed. The cutting tube C2 necessary for the assembly work of the wire harness is housed in the portion 81, and when the movable work table 110 is moved and disposed in the working area A, the shutter portion 82 is opened, thereby the inside of each tube housing main portion 81 The cutting tube C <b> 2 is collectively dropped to each supply destination of the movable work table 110.

Next, an operation of cutting the tube C having a predetermined length from the tube C1 wound up by the tube cutting device 1 will be described using FIGS. 7 to 9.
FIG. 7 is a view for explaining that the tube C can be pulled out from the wound tube C1 of the tube cutting device 1. FIG. FIG. 8 is a view for explaining a state in which the tube cutting device 1 pulls out the tube C by the grip and pull-out portion 60. As shown in FIG. FIG. 9 is a view for explaining a state in which the tube cutting device 1 completes the pulling-out of the tube C by the grip and pull-out unit 60 and the cutting unit 70 cuts the tube C.
In addition, since the three tube cutting devices 1 operate in the same manner, the description of the operation of each device will be omitted.

First, the tube cutting device 1 makes it possible to withdraw the tube C from the wound tube C1 (see FIG. 7).
Here, the tube cutting device 1 holds a part of the tube C by the gripping and pulling out portion 60 which has moved the gripping portion 61 to the pulling out start position of the tube C, and releases the pressing portion 51 of the gripping and fixing portion 50 from the tube C Thus, the tube C can be drawn out from the wound tube C1.

Thereafter, the tube cutting apparatus 1 pulls out the tube C by the grip and pull-out unit 60 (see FIG. 8).
Thereby, the tube C is pulled out from the tube C1 wound up by the tube direction gradual change portion 10 so as to gradually change the direction toward the cutting mechanism portion 40.
For this reason, since the tube C is pulled in the pulling-out direction by the sandwiching portion 61 of the holding and pulling-out portion 60 while suppressing that the external force that the tube C bends acts on the tube C, the tube C1 is partially crushed Even if there is an irregular portion P, an external force is applied to the tube C to repair the collapsed portion.
In addition, since the tube insertion guide portion 30 is adjusted to a hole diameter having a width slightly larger than the outer diameter width of the tube C expanded by the tube insertion guide hole 31 being crushed by the tube C, the crushed portion of the tube C is It is inserted without being caught in the tube insertion guide hole 31.
Therefore, the tube C is smoothly guided to the cutting mechanism 40 by the tube insertion guide 30.

Thereafter, the tube cutting apparatus 1 completes the withdrawal of the tube C by the grip and withdrawal unit 60, and cuts the tube C by the cutting unit 70 (see FIG. 9).
The tube C2 cut by the cutting unit 70 of each tube cutting device 1 is temporarily stored in the tube housing main body 81 of each tube temporary holding unit 80, and the work in which the movable work bench 110 arranges the tube cutting device 1 When the shutter unit 82 is opened at the timing of moving and arranging in the area A, the shutter 82 is collectively dropped to each supply destination of the movable work table 110.

  The tube cutting apparatus 1 according to the embodiment of the present invention adjusts the distance between the tube C1 wound by the tube direction gradual change unit 10 and the cutting mechanism unit 40 while gradually adjusting the direction of the tube C drawn from the wound tube C1. Since the change is guided to the cutting mechanism 40 while being pulled, the tube C drawn out from the wound tube C1 toward the cutting mechanism 40 is tensioned in the drawing direction D by the grip 60 so that the tube C is not bent significantly. An external force for correcting the collapse is applied to the collapsed portion P of the tube C, and the tube insertion guide hole 31 of the tube insertion guide portion 30 is adjusted to a dimension in consideration of the width of the collapsed portion P of the tube C. , Even if part of the tube C is crushed, the rolled up part of the tube C1 to the crushed part P of the tube C is hooked to the apparatus It can be cut into a predetermined size by the drawer without.

  Further, in the tube cutting device 1 according to the embodiment of the present invention, since the tube direction gradual change unit 10 draws the tube C by the tube guiding support unit 20 for a predetermined section at a position exceeding the predetermined height, the tube By adjusting the guiding section of the tube by the direction gradual change portion 10 to a high position, the space can be effectively used to draw the tube C in a predetermined section.

  Further, in the tube cutting device 1 according to the embodiment of the present invention, since the tube C drawn out in a substantially linear shape by the linear induction support portion 22 is inserted into the tube insertion guide hole 31, deformation of the collapsed portion of the tube C Can be inserted into the tube insertion guide hole 31 in a state in which the portion P is further suppressed.

  In the tube cutting device 1 according to the embodiment of the present invention, the tube C1 to the tube C wound up with respect to the tube C in which the collapsing of the circular shape having a constant inner diameter and outer diameter in the axial direction tends to occur The portion P can be pulled out and cut to a predetermined size without being caught on the device.

  In addition, although the tube cutting apparatus 1 which concerns on the Example of this invention illustrated the thing whose tube insertion guide hole 31 is circular shape, it is not restricted to this, The outer diameter width of the tube C expanded by crushing of the tube C Other shapes may be used as long as the dimensions of the hole are adjusted to include a slightly larger width. For example, the tube insertion guide hole 31 may have an elliptical shape.

  Moreover, although the tube cutting device 1 which concerns on the Example of this invention illustrated the thing which withdraws a predetermined area in the position where the tube direction gradually changing part 10 exceeds the predetermined height of the tube C, it does not restrict to this. The gradually changing unit 10 adjusts the distance between the wound tube C1 and the cutting mechanism 40, and guides the tube C drawn from the wound tube C1 to the cutting mechanism 40 while gradually changing the direction. There is no limitation on the height at which the tube C is pulled out.

  Moreover, although the tube cutting apparatus 1 which concerns on the Example of this invention illustrated what provided one tube insertion guide part 30 in the induction | guidance | derivation area of the tube C by the tube direction gradually changing part 10, it does not restrict to this. A plurality of insertion guide portions 30 may be provided in a guiding section of the tube C by the tube direction gradual change portion 10.

  As mentioned above, although the invention made by the present inventor was concretely explained based on the example of the above-mentioned invention, the present invention is not limited to the example of the invention mentioned above, The range which does not deviate from the gist Can be changed variously.

DESCRIPTION OF SYMBOLS 1 Tube cutting device 10 Tube direction gradual change part 20 Tube induction | guidance | derivation support part 21 Gradually upper guidance support part 22 Linear induction support part 30 Tube insertion guide part 31 Tube insertion guide hole 32 Guide main body part 40 Cutting mechanism part 50 Gripping fixing part 51 Press Part 52 Drive part 60 Grasping pull-out part 61 Clamping part 62 Drive part 63 Pull-out direction drive part 70 Cutting part 71 Cutting blade 72 Cutting part drive part 73 Cutting guide part 73a Cutting guide slit 80 Tube temporary holding part 81 Tube housing main part 82 Shutter part Reference Signs List 90 plate member 100 wire harness assembling system 110 mobile work platform C, C1, C2 tube P crushed part R reel

Claims (2)

A grip and pull-out portion for pulling out a predetermined length by gripping a part of the tube from the wound tube, a grip fixing portion for gripping and fixing a portion of the pulled out tube, and the tube pulled out by the grip and pull out portion What is claimed is: 1. A tube cutting apparatus comprising: a cutting mechanism section including a cutting section for cutting in a direction orthogonal to the drawing direction,
The distance between the wound tube and the cutting mechanism is adjusted to a distance at which another device can be disposed, and the tube pulled out from the wound tube is gradually changed in direction to the cutting mechanism. Tube direction gradually changing part to guide,
A tube insertion guide hole whose diameter is adjusted so as to include a width slightly larger than the outer diameter width of the tube expanded by crushing of the tube, which is a hole through which the tube is guided and guided; And at least one tube insertion guide portion provided in a guide section of the tube by the tube direction gradual change portion ;
The tube direction gradual change portion is
It has a tube guiding support which supports the tube so as to draw out a predetermined section at a position exceeding a predetermined height,
The tube guiding support is:
A progressively upper guiding support for guiding the tube drawn from the wound tube to a height position near the ceiling of the place where the tube cutting device is installed;
A linear guiding support for supporting the tube so as to draw out the predetermined section in a substantially linear manner;
Have
The tube insertion guide portion is
A tube cutting device provided in a section for drawing out the tube in a substantially straight line by the linear guiding support . The tube is
The tube cutting device according to claim 1, wherein the tube is a circular tube having a constant inner diameter and an outer diameter in the axial direction.

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