WO2018101062A1

WO2018101062A1 - Corrugated tube positioning member, positioning device, and cutting device

Info

Publication number: WO2018101062A1
Application number: PCT/JP2017/041275
Authority: WO
Inventors: 耕平福重
Original assignee: 住友電装株式会社
Priority date: 2016-12-01
Filing date: 2017-11-16
Publication date: 2018-06-07
Also published as: JP2018089726A

Abstract

The purpose of the present invention is to provide art with which it is possible to easily adjust the position of a positioning member in the axial direction, and easily attach/detach the positioning member to/from a device. This corrugated tube positioning member includes: a locking portion that positions the corrugated tube by bringing a tip section thereof into contact with an annular concave portion; a held portion that is attracted and held by magnetic force to a holding portion of a device at a fixed position along the axial direction; and an adjustment portion that adjusts the relative positional relationship between the locking portion and the held portion along the axial direction. Therefore, even after changing to a corrugated tube having a different pitch, the position of the positioning member in the axial direction can be easily adjusted by adjusting the position of the locking portion according to the pitch change amount. In addition, since holding by magnetic force is used, a worker can easily attach/detach the positioning member to/from the device when changing to a corrugated tube having a different diameter, for example.

Description

Corrugated tube positioning member, positioning device, and cutting device

The present invention relates to a corrugated tube positioning member, a positioning device using the member, and a cutting device using the member.

An apparatus for cutting a corrugated tube along a plane perpendicular to the axial direction in a state where the corrugated tube in which the annular convex portion and the annular concave portion are alternately continuous along the axial direction is moved and positioned along the axial direction. It has been known.

For example, in Patent Document 1, a pair of blade guides are inserted into two continuous annular recesses to position the corrugated tube, and an annular projection located at the center of the two annular recesses is sandwiched between the pair of blade guides. A technique for cutting with a circular blade is disclosed.

JP 2010-23125 A

In the corrugated tube cutting device, the position of the corrugated tube positioning member in the axial direction is usually adjusted when the uneven pitch of the corrugated tube to be cut is changed. Moreover, when changing the diameter of the corrugated tube to be cut, the corrugated tube positioning member is replaced according to the changed corrugated tube diameter. Thereby, it can position with high precision also with respect to the corrugated tube after changing a pitch and a diameter.

However, such position adjustment and replacement of the positioning member is troublesome for the user of the apparatus, and the replacement period is a non-operation period of the apparatus. For this reason, it is desired that the position adjustment in the axial direction of the positioning member can be easily performed. Further, when replacing the positioning member, it is desirable that the positioning member can be easily attached to and detached from the apparatus.

Therefore, an object of the present invention is to provide a technique capable of easily adjusting the position of the positioning member in the axial direction and easily attaching / detaching the positioning member to / from the apparatus.

In order to solve the above problem, the corrugated tube positioning member according to the first aspect is detachable from an apparatus for processing a corrugated tube in which annular convex portions and annular concave portions are alternately continuous along the axial direction. A positioning member for the corrugated tube, and a locking portion for positioning the corrugated tube by abutting a distal end portion against the annular recess, and a holding position of the device by a magnetic force at a fixed position along the axial direction. A held portion that is sucked and held; and an adjustment portion that adjusts a relative positional relationship between the locking portion and the held portion along the axial direction.

The corrugated tube positioning member according to the second aspect is the corrugated tube positioning member according to the first aspect, wherein the locking portion is fixed to the base, and a screw hole is formed in the base. A screw is screwed into the screw hole so as to be able to advance and retreat along the axial direction, and a tip portion of the screw is at a fixed position along the axial direction by a magnetic force applied to the holding portion of the device. Adjustment to adjust the relative positional relationship between the locking portion and the held portion along the axial direction by the screwed structure of the screw and the screw hole. Part.

A positioning device according to a third aspect includes a delivery unit that sends the corrugated tube along its axial direction, and a positioning member according to the first or second aspect, which is orthogonal to the axial direction. A first positioning member disposed on one side, a first holding portion that sucks and holds the first positioning member by magnetic force, and a first contact where the locking portion of the first positioning member contacts the annular recess. A first moving part for moving the first holding part and the first positioning member held by the first holding part between a position and a first separated position where the locking part is separated from the annular recess; The positioning member according to the first or second aspect, wherein the second positioning member is disposed on the other side in the orthogonal direction, the second holding portion that holds the second positioning member by magnetic force, and Second positioning part Between the second abutting position where the engaging portion of the engaging portion abuts the annular recess and the second separating position where the engaging portion is separated from the annular recess. A second moving unit that moves the second positioning member that is held.

A positioning device according to a fourth aspect is the positioning device according to the third aspect, wherein the first holding part restricts the movable direction of the first positioning member relative to the first holding part to only the axial direction. The second holding part has a second restricting part that restricts the movable direction of the second positioning member relative to the second holding part only in the axial direction.

The cutting device according to the fifth aspect includes the positioning device according to the third or fourth aspect, the first positioning member positioned at the first contact position, and the second positioning member positioned at the second contact. A cutting portion that cuts the corrugated tube along a plane orthogonal to the axial direction in a state of being positioned.

The cutting device according to the sixth aspect is the cutting device according to the fifth aspect, and is located at the locking portion of the first positioning member located at the first contact position and at the second contact position. The locking portion of the second positioning member contacts the same annular recess from both sides in the orthogonal direction, and the cutting portion includes the locking portion of the first positioning member and the second positioning member. The annular convex part adjacent to the said annular concave part contact | abutted by this latching | locking part is cut | disconnected.

A cutting device according to a seventh aspect is the cutting device according to the fifth or sixth aspect, wherein the first positioning member, the second positioning member, and the blade of the cutting portion are individually provided with respect to the device. It is removable.

According to the first to seventh aspects, the locking portion of the positioning member can be arranged at a predetermined position along the axial direction from the holding portion of the apparatus. For this reason, even if it changes to the corrugated tube from which a pitch differs, the position adjustment in the axial direction of a positioning member can be easily performed by adjusting the position of a latching | locking part according to the variation | change_quantity of a pitch.

Further, according to the first to seventh aspects, the held portion of the positioning member is attracted and held by the magnetic force to the holding portion of the apparatus. Thus, since it is the holding | maintenance aspect using magnetic force, when changing to the corrugated tube from which a diameter differs, an operator can attach or detach a positioning member easily with respect to an apparatus.

According to the second aspect, the relative positional relationship between the locking portion and the held portion can be adjusted with a simple structure in which the screw that is screwed to the base portion on which the locking portion is fixed is advanced and retracted. .

According to the third aspect, the corrugated tube can be positioned with high accuracy by sandwiching the corrugated tube from both sides in the direction orthogonal to the axial direction using the first positioning member and the second positioning member.

According to the fourth aspect, the first restricting portion restricts the moving direction of the first positioning member relative to the first holding portion only in the axial direction, and the second restricting portion determines the moving direction of the second positioning member relative to the second holding portion. Restrict only in the axial direction. For this reason, even if the first positioning member and the second positioning member are in contact with the corrugated tube from the orthogonal direction orthogonal to the axial direction, the first positioning member and the second positioning member are displaced in this orthogonal direction (as a result, the corrugated tube Is shifted).

According to the fifth aspect, the corrugated tube is cut along the plane orthogonal to the axial direction while the corrugated tube is sandwiched from both sides in the direction orthogonal to the axial direction using the first positioning member and the second positioning member. can do. Thus, since the corrugated tube positioned from both sides is cut, the corrugated tube can be cut with high positional accuracy.

According to the sixth aspect, the locking portion of the first positioning member and the locking portion of the second positioning member abut against the same annular recess from both sides in the direction orthogonal to the axial direction. For this reason, it can suppress that a corrugated tube curves in the case of positioning. Further, since the annular convex portion adjacent to the positioned annular concave portion is cut, the corrugated tube can be cut with high positional accuracy.

According to the seventh aspect, the first positioning member, the second positioning member, and the blade of the cutting part can be individually attached to and detached from the apparatus. For this reason, the operator can select a member (for example, the first positioning member) that needs to be replaced, and only the member that needs to be replaced can be easily attached to and detached from the apparatus.

It is a top view which shows the corrugated tube used as cutting object. It is a side view which shows the cutting device of a corrugated tube. It is a perspective view which shows the periphery structure of a position detection part, a positioning part, and a cutting part. It is a perspective view which shows a mode that the uneven | corrugated position of a corrugated tube is detected by a position detection part. It is a side view which shows a positioning part and a corrugated tube. It is a perspective view which shows a 2nd positioning member. It is a perspective view which shows a 2nd holding | maintenance part. It is a perspective view showing the state where the 2nd holding part held the 2nd positioning member. It is YZ sectional drawing of a base part and a control part. It is a figure which shows the flow of each process with respect to a corrugated tube. It is the schematic side view which looked at the cutting location periphery in a process in the light-receiving part side. It is the schematic side view which looked at the cutting location periphery in a process in the light-receiving part side. It is the schematic side view which looked at the cutting location periphery in a process in the light-receiving part side. It is the schematic side view which looked at the cutting location periphery in a process in the light-receiving part side. It is the schematic side view which looked at the cutting location periphery in a process in the light-receiving part side.

{Embodiment}
<Device configuration>
Hereinafter, the corrugated tube cutting device 1 according to the embodiment will be described.

FIG. 1 is a plan view showing a corrugated tube 10 to be cut. In FIG. 1 and the subsequent drawings, for the purpose of clarifying the directional relationship, XYZ orthogonal coordinate axes with the Z axis as the vertical axis and the XY plane as the horizontal plane are appropriately attached. In the following description, when simply expressing “upper and lower”, “upper” means the + Z side, and “lower” means the −Z side.

The corrugated tube 10 is a member formed of resin or the like, and is formed in a long tubular shape. The corrugated tube 10 includes an annular convex portion 12 formed in a projecting shape along the circumferential direction and an annular concave portion 14 formed in a concave groove shape along the circumferential direction, alternately and continuously along the axial direction. Have. Thus, the corrugated tube 10 has a shape that can be easily bent in the radial direction.

When the corrugated tube 10 is used as a protective member for an electric wire or the like (for example, a wire harness or the like), the corrugated tube 10 is cut to a predetermined length according to the length of the target electric wire or the like. At this time, in order to suppress damage to the electric wire or the like, it is preferable to cut the corrugated tube 10 with the annular convex portion 12 as shown by an arrow A in FIG. This is because the opening area of the corrugated tube 10 is increased by cutting with the annular convex portion 12, and it is possible to suppress a situation in which an electric wire or the like inserted into the corrugated tube 10 comes into contact with the opening end of the corrugated tube 10 and is damaged.

The cutting device 1 for the corrugated tube 10 described in the present embodiment is a device that automatically cuts the corrugated tube 10 with the annular convex portion 12.

FIG. 2 is a side view showing the cutting device 1 for the corrugated tube 10. FIG. 3 is a perspective view showing the peripheral configuration of the position detection unit 50, the positioning unit 70, and the cutting unit 80. In addition, in FIG. 3, illustration of the corrugated tube 10 and the guide part 60 is abbreviate | omitted for the purpose of showing the structure of each part.

The cutting device 1 mainly includes a delivery unit 30 that sends out the corrugated tube 10, a guide unit 60 that guides the sent corrugated tube 10 along the path P, and a position detection that optically detects the position of the corrugated tube 10. The positioning part 70 which positions the part 50, the sent corrugated tube 10, the cutting part 80 cut | disconnected by the cyclic | annular convex part 12 of the positioned corrugated tube 10, and the control part 9 which controls each part are provided.

Here, the path P is a path along which the corrugated tube 10 delivered from the delivery unit 30 moves toward the cutting unit 80. The path P is set as a path in the axial direction (+ X direction) of the corrugated tube 10.

The delivery unit 30 is configured to continuously deliver the corrugated tube 10 supplied from a tube supply unit (not shown). The tube supply unit is, for example, wound and accommodated with a long corrugated tube 10 before cutting, and is configured so that the corrugated tube 10 can be continuously supplied.

The delivery unit 30 includes a belt mechanism 31 provided above the path P and a belt mechanism 32 provided below the path P. The pair of belt mechanisms 31 and 32 are provided to face each other up and down across the path P.

The belt mechanism 31 includes a sending roller 311 provided on the upstream side of the path P, a sending roller 312 provided on the downstream side of the path P, a sending belt 313 wound around the pair of sending

rollers

311 and 312, And a driving unit 314.

The belt mechanism 32 includes a sending roller 321 provided on the upstream side of the path P, a sending roller 322 provided on the downstream side of the path P, a sending belt 323 wound around the pair of sending

rollers

321, 322, And a drive unit 324 that rotates the pair of

delivery rollers

321 and 322 counterclockwise in the drawing to convey the delivery belt 323 endlessly.

The drive unit 314 includes, for example, a motor (a stepping motor or a motor capable of controlling the rotation amount such as a servo motor) and a mechanism (specifically, for example, a mechanism for transmitting the rotational driving force of the motor to the

delivery rollers

311 and 312. And a belt wound between a pulley attached to the rotating shaft of the motor and a pulley attached to the rotating shaft of the delivery roller 311).

The drive unit 324 includes, for example, a motor (a stepping motor or a motor capable of controlling the rotation amount such as a servo motor) and a mechanism (specifically, for example, a mechanism for transmitting the rotational driving force of the motor to the

delivery rollers

321 and 322. And a belt wound between a pulley attached to the rotating shaft of the motor and a pulley attached to the rotating shaft of the delivery roller 321).

The corrugated tube 10 disposed along the path P is sandwiched from above and below by the

delivery belts

313 and 323 of the pair of belt mechanisms 31 and 32. In this state, when the

drive units

314 and 324 are driven synchronously and the

delivery belts

313 and 323 are rotated synchronously, the corrugated tube 10 sandwiched between the

delivery belts

313 and 323 is delivered along the path P. Is done.

The delivery unit 30 further includes an elevating mechanism 33 that integrally raises and lowers each part of the belt mechanism 31. For this reason, the gap dimension between the pair of

delivery belts

313 and 323 can be adjusted by moving the belt mechanism 31 up and down to approach (or move away from) the path P. By making this gap dimension correspond to the thickness of the corrugated tube 10 delivered along the path P, the corrugated tube 10 can be sent out with high accuracy.

The delivery unit 30 is not limited to the above-described configuration, and various modes capable of moving the corrugated tube 10 along its axial direction can be adopted.

The guide part 60 includes a first guide part 61 positioned upstream of the cutting part 80 along the path P, and a second guide part 62 positioned downstream of the cutting part 80 along the path P. Prepare.

The first guide part 61 and the second guide part 62 are cylindrical casings extending along the axial direction of the corrugated tube 10 and have hollow portions through which the corrugated tube 10 moving along the path P can pass.

When the corrugated tube 10 delivered from the delivery unit 30 moves ideally along the path P, the outer peripheral surface of the corrugated tube 10 and the inner peripheral surfaces of the first guide portion 61 and the second guide portion 62 are not in contact with each other. State is maintained. On the other hand, when the corrugated tube 10 delivered from the delivery unit 30 meanders due to the influence of gravity or the like, the outer peripheral surface of the corrugated tube 10 and the inner peripheral surfaces of the first guide portion 61 and the second guide portion 62 are in contact with each other. The curvature of the corrugated tube 10 is suppressed, and the corrugated tube 10 is guided along the path P. In FIG. 2, the corrugated tube 10 passing through the guide portion 60 is drawn with a dotted line.

FIG. 4 is a perspective view showing a state in which the position detection unit 50 detects the uneven position of the corrugated tube 10.

The position detection unit 50 includes an irradiation unit 51 that irradiates the irradiation light L1 toward the corrugated tube 10, and a light receiving unit 52 that is disposed opposite to the irradiation unit 51 and receives a part of the irradiation light L1.

The irradiation unit 51 emits irradiation light from one side (the −Y direction side) toward the lower part of the corrugated tube 10 in the crossing direction (for example, the Y direction perpendicular to the crossing) that intersects the corrugated tube 10 moving along the path P. Irradiate L1. The irradiation light L1 is composed of, for example, a belt-shaped laser beam. 3 and 4, the irradiation light L1 is represented by shading.

The light receiving unit 52 receives the passing light passing through the corrugated tube 10 out of the irradiation light L1 on the other side (+ Y direction side) in the crossing direction. Specifically, the passing light includes the light that has passed through the space below the corrugated tube 10 in the irradiation light L1, and the light that has passed through the gap between the adjacent annular protrusions 12 in the irradiation light L1. In addition, the light (for example, the reflected light reflected on the surface of the corrugated tube 10) blocked by the corrugated tube 10 in the irradiation light L1 is not received by the light receiving unit 52.

When the annular recess 14 of the corrugated tube 10 is positioned between the irradiation unit 51 and the light receiving unit 52, the light passing through the gap between the adjacent annular projections 12 increases, and the amount of light received by the light receiving unit 52 also increases ( (See FIG. 12 described later). Moreover, when the annular convex part 12 of the corrugated tube 10 is located between the irradiation part 51 and the light receiving part 52, the reflected light reflected on the surface of the corrugated tube 10 increases and the amount of light received by the light receiving part 52 decreases. (See FIG. 11 described later).

Therefore, as the corrugated tube 10 moves, the amount of light received by the light receiving unit 52 also changes continuously. The light receiving unit 52 inputs a detection signal corresponding to the amount of received light to the control unit 9 in real time. The control unit 9 calculates based on this detection signal and determines the uneven position of the corrugated tube 10 located between the irradiation unit 51 and the light receiving unit 52.

FIG. 5 is a side view showing the positioning portion 70 and the corrugated tube 10.

The positioning unit 70 includes a first positioning member 71 disposed on one side (specifically, + Z side) in an orthogonal direction orthogonal to the path P, a first holding unit 73 that holds the first positioning member 71, A first moving portion 77 that moves the first positioning member 71 and the first holding portion 73 in the up-down direction, and a second that is disposed on the other side (specifically, the −Z side) in the orthogonal direction orthogonal to the path P. The positioning member 72 includes a second holding unit 74 that holds the second positioning member 72, and a second moving unit 78 that moves the second positioning member 72 and the second holding unit 74 up and down.

The first positioning member 71 includes a locking portion 710 having a tapered lower end portion along the curved surface shape of the annular recess 14. The second positioning member 72 includes a locking portion 720 having a tapered upper end portion along the curved shape of the annular recess 14. The thickness in the axial direction of the lower end portion of the locking portion 710 and the upper end portion of the locking portion 720 is smaller than the width of the annular recess 14 in the axial direction of the corrugated tube 10.

Further, the locking

portions

710 and 720 are in the same position in the axial direction of the corrugated tube 10, and the lower end portion of the locking portion 710 and the upper end portion of the upper end portion 720 are opposed to each other with the path P interposed therebetween.

The first moving portion 77 is between the first contact position where the locking portion 710 of the first positioning member 71 contacts the annular recess 14 and the first separation position where the locking portion 710 is separated from the annular recess 14. Thus, the first holding portion 73 and the first positioning member 71 held by the first holding portion 73 are moved. In FIG. 5, the first holding portion 73 and the first positioning member 71 located at the separated position are indicated by solid lines, and the lower end portion of the locking portion 710 located at the contact position is indicated by a two-dot chain line.

The second moving portion 78 is between a second contact position where the locking portion 720 of the second positioning member 72 contacts the annular recess 14 and a second spaced position where the locking portion 720 is separated from the annular recess 14. Thus, the second holding portion 74 and the second positioning member 72 held by the second holding portion 74 are moved. In FIG. 5, the second holding portion 74 and the second positioning member 72 positioned at the separated position are indicated by solid lines, and the upper end portion of the locking portion 720 positioned at the contact position is indicated by a two-dot chain line.

The first moving unit 77 and the second moving unit 78 include, for example, a mechanism that causes the rotational driving force of the motor to act as a driving force via a rack and a pinion, or various linear drive mechanisms such as an air cylinder. .

Therefore, by driving the first moving unit 77 and the second moving unit 78 in synchronization, the first positioning member 71 and the second positioning member 72 are moved closer to (or away from) the path P, and the locking portion 710 is moved. The gap dimension between the lower end portion and the upper end portion of the locking portion 720 can be adjusted.

The first and

second positioning members

71 and 72 can be moved to the abutting position by setting the gap size according to the thickness of the annular recess 14. Thereby, the corrugated tube 10 is pinched | interposed and positioned by the 1st positioning member 71 and the 2nd positioning member 72 from the up-down direction.

In particular, in the present embodiment, since the first positioning member 71 and the second positioning member 72 come into contact with one annular recess 14 of the corrugated tube 10 from above and below, the corrugated tube 10 is curved during positioning. Can be suppressed. As will be described later, the cutting unit 80 cuts the corrugated tube 10 while the feeding operation by the sending unit 30 is stopped and the corrugated tube 10 is positioned.

Moreover, the first positioning member 71 and the second positioning member 72 can be moved to the separated position by making the gap dimension larger than the thickness of the annular recess 14. Thereby, the positioning of the first positioning member 71 and the second positioning member 72 with respect to the corrugated tube 10 is released. In this way, the corrugated tube 10 moves along the path P when the feeding unit 30 performs the feeding operation of the corrugated tube 10 in a state where the first positioning member 71 and the second positioning member 72 are located at the separated positions.

Further, in the axial direction of the corrugated tube 10, the irradiation range in which the irradiation light L <b> 1 is irradiated from the irradiation unit 51 to the corrugated tube 10, and the first positioning member 71 and the second positioning member 72 are in contact with the corrugated tube 10. The contact range overlaps (see FIGS. 11 and 12 described later). As described above, since the target location for detecting the position of the corrugated tube 10 and the positioning location of the corrugated tube 10 are close to each other, the corrugated tube 10 is highly accurately controlled by the positioning portion 70 based on the detection result by the position detecting portion 50. Can be positioned.

FIG. 6 is a perspective view showing the second positioning member 72. FIG. 7 is a perspective view showing the second holding portion. FIG. 8 is a perspective view showing a state where the second holding portion 74 holds the second positioning member 72. FIG. 9 is a YZ sectional view of the pedestal 721 and the restricting portion 741.

Hereinafter, the configuration of the second positioning member 72 and the second holding portion 74 will be described in detail with reference to FIGS. 6 to 9. About the 1st positioning member 71 and the 1st holding | maintenance part 73, since it is the structure similar to the 2nd positioning member 72 and the 2nd holding | maintenance part 74, duplication description is abbreviate | omitted.

The 1st positioning member 71 and the 2nd positioning member 72 are members which can be attached or detached with respect to the apparatus which processes the corrugated tube 10, and the case where this embodiment attaches / detaches with respect to the cutting device 1 is demonstrated. 6 and 7 show a state in which the second positioning member 72 is removed from the cutting device 1, and FIG. 8 shows a state in which the second positioning member 72 is attached from the cutting device 1 (that is, the second holding portion). 74 shows a state in which the second positioning member 72 is held.

The second positioning member 72 mainly includes a base part 721 having a YZ cross-section with an upward convex shape extending in the X direction, a locking part 720 fixed to the + X side surface of the base part 721, and a −X of the base part 721. A plate portion 722 fixed to the side surface and parallel to the YZ plane, and a screw 723 screwed so as to be able to advance and retract along the X direction with respect to a screw hole (not shown) penetrating in the X direction in the plate portion 722; .

The base part 721 and the plate part 722 correspond to the base part of the second positioning member 72. The tip portion 723a of the screw 723 corresponds to a held portion that is attracted and held by the second holding portion 74 by a magnetic force at a fixed position along the X direction.

* By screwing the screw 723 in the + X direction, the locking portion 720 and the tip portion 723a approach each other in the X direction. On the other hand, when the screw 723 is screwed in the −X direction, the locking portion 720 and the tip end portion 723a are moved away in the X direction. Thus, the screwed structure of the screw 723 and the screw hole corresponds to an adjustment unit that adjusts the relative positional relationship between the locking portion 720 and the tip portion 723a along the X direction. In FIG. 6, the screw 723 at a certain position is indicated by a solid line, and the tip side of the screw 723 screwed in the + X direction from this position is indicated by a two-dot chain line.

The second holding part 74 is mainly fixed to the upper surface of the base part 740 that is moved up and down by the second moving part 78 and the movable direction of the second positioning member 72 relative to the second holding part 74 is X. A restriction portion 741 that restricts only in the direction, and a magnet 742 that is fixed to the −X side side surface of the base portion 740 and that attracts and holds the tip portion 723a of the screw 723 by magnetic force.

The regulating portion 741 includes two members that are spaced apart from each other in the Y direction. The two members have an L shape that is upside down, and are arranged so that the short sides of the L shape face each other. Thereby, the hollow space 741a sandwiched between the two members of the restricting portion 741 has a convex shape with the YZ section facing upward. Two members of the restricting portion 741 are arranged so that the hollow space 741a is slightly larger than the outer shape of the pedestal portion 721, and the pedestal portion 721 can be inserted through the hollow space 741a in the X direction.

In the insertion state in which the base part 721 is inserted into the hollow space 741a, the ± Y side surface of the base part 721 is sandwiched between the two members of the restricting part 741, and the base part 721 becomes immovable in the Y direction. In this insertion state, the ± Z side surface of the projecting portion 721a projecting to the ± Y side of the base portion 721 is sandwiched between the L-shaped short sides of the two members of the base portion 740 and the restricting portion 741. The base part 721 becomes immovable in the Z direction. Thus, in the inserted state, the movable direction of the base 721 (and consequently the second positioning member 72 configured integrally with the base 721) is limited to only the X direction with respect to the second holding part 74 ( (See FIGS. 8 and 9). There may be a gap between the ± Y side surface of the base 721 and the two members of the restriction part 741 so that the base 721 can move in the X direction. Similarly, there is a gap that allows the base 721 to move in the X direction between the ± Z side surface of the overhang 721a and the L-shaped short sides of the two members of the base 740 and the restriction 741. There may be.

Further, when attaching the second positioning member 72 to the second holding portion 74, after inserting the + X side side surface of the base portion 721 from the −X side opening of the hollow space 741a to make the insertion state, the second positioning member 72 72 is slid in the + X direction with respect to the second holding portion 74. When this sliding is continued for a predetermined distance, the tip 723 a of the screw 723 of the second positioning member 72 comes into contact with the magnet 742 of the second holding unit 74. This restricts the movement of the second positioning member 72 in the + X direction. Further, the tip 723 a is attracted and held by the magnetic force of the magnet 742. This restricts the movement of the second positioning member 72 in the −X direction. As described above, the movable direction of the second positioning member 72 is also fixed in the X direction with respect to the second holding portion 74, and the second positioning member 72 is attached to the second holding portion 74. The second positioning member 72 is attached to the second holding portion 74 during a non-operating period (for example, a maintenance period) of the cutting device 1, and this attached state is maintained during the operating period of the cutting device 1.

So far, the configuration of the second positioning member 72 has been described with reference to FIGS. 6 to 9, but the same applies to the first positioning member 71. That is, the first positioning member 71 is mainly composed of a base part 711 extending in the X direction with the YZ cross-section protruding upward, a locking part 710 fixed on the −X side side surface of the base part 711, and the base part 711. The plate portion 712 that is fixed to the side surface of the + X side and is parallel to the YZ plane, and a screw that is threadably engaged with the screw hole (not shown) penetrating in the X direction in the plate portion 712 along the X direction. 713. The base portion 711 and the plate portion 712 correspond to the base portion of the first positioning member 71. The tip portion 713a of the screw 713 corresponds to a held portion that is attracted and held by the first holding portion 73 at a certain position along the X direction. The screwed structure of the screw 713 and the screw hole corresponds to an adjustment unit that adjusts the relative positional relationship between the locking portion 710 and the tip portion 713a along the X direction. The first holding portion 73 is mainly fixed to the upper surface of the base portion 730 moved up and down by the first moving portion 77, and the movable direction of the first positioning member 71 relative to the first holding portion 73 is X. A restriction portion 731 that restricts only in the direction, and a magnet 732 that is fixed to the side surface on the + X side of the base portion 730 and holds the tip portion 713a of the screw 713 by magnetic force. In the insertion state in which the base part 711 is inserted through the hollow space of the restriction part 731, the movable direction of the base part 711 (and thus the first positioning member 71 configured integrally with the base part 711) is relative to the first holding part 73. Limited to the X direction. Further, when attaching the first positioning member 71 to the first holding portion 73, after inserting the −X side side surface of the base portion 711 from the + X side opening of the hollow space of the restricting portion 731 to the above insertion state, The one positioning member 71 is slid in the −X direction with respect to the first holding portion 73. When this sliding is continued for a predetermined distance, the tip end portion 713 a of the screw 713 of the first positioning member 71 comes into contact with the magnet 732 of the first holding portion 73. This restricts the movement of the first positioning member 71 in the −X direction. Further, the tip 713 a is attracted and held by the magnetic force of the magnet 732. This restricts the movement of the first positioning member 71 in the + X direction. As described above, the movable direction of the first positioning member 71 is also fixed in the X direction with respect to the first holding portion 73, and the first positioning member 71 is attached to the first holding portion 73. The first positioning member 71 is attached to the first holding portion 73 during a non-operating period (for example, a maintenance period) of the cutting device 1, and this attached state is maintained during the operating period of the cutting device 1.

The cutting unit 80 includes a cutting blade 81 provided above the path P, a blade holding unit 82 that holds the cutting blade 81, and a lifting unit (not shown) that moves the cutting blade 81 and the blade holding unit 82 up and down. .

The cutting blade 81 is provided along the YZ plane orthogonal to the axial direction of the corrugated tube 10, and has a lower end portion 810 that contacts the annular convex portion 12 and cuts the annular convex portion 12. The thickness in the axial direction of the lower end portion 810 of the cutting blade 81 is smaller than the width of the annular convex portion 12 in the axial direction of the corrugated tube 10.

The blade holding portion 82 is a holding portion that holds the ± Y side end portion of the cutting blade 81 by tightening and fixing screws. For example, the elevating unit is configured by a cam mechanism using a rotational driving force of a motor as a driving force. The holding of the first positioning member 71 by the first holding unit 73, the holding of the second positioning member 72 by the second holding unit 74, and the holding of the cutting blade 81 by the blade holding unit 82 are mechanically independent. For this reason, the 1st positioning member 71, the 2nd positioning member 72, and the cutting blade 81 can be attached / detached separately with respect to the cutting device 1, respectively.

Further, along the path P, the cutting blade 81 is positioned about 0.5 pitch upstream from the first positioning member 71 and the second positioning member 72. Here, 1 pitch means the distance (for example, distance from a certain annular convex part 12 to the adjacent annular convex part 12) for one period of the concave and convex parts of the corrugated tube 10 along the path P. Moreover, 0.5 pitch means the distance (for example, distance from the certain cyclic | annular convex part 12 to the adjacent cyclic | annular recessed part 14) for the uneven | corrugated half period of the corrugated tube 10 along the path | route P. FIG.

Therefore, the cutting blade 81 is moved downward by the elevating unit in a state where the first positioning member 71 and the second positioning member 72 are in contact with the annular recess 14 where the corrugated tube 10 is located and the corrugated tube 10 is positioned. The annular convex portion 12 adjacent to the upstream side of the annular concave portion 14 along the path P can be cut by the cutting blade 81 (see FIG. 15 described later).

The control unit 9 is configured by a general computer including a CPU, a RAM, a ROM, an input circuit unit, and the like. The ROM is composed of a rewritable nonvolatile semiconductor memory such as a flash memory. The ROM stores a program describing a processing procedure and processing contents for the corrugated tube 10. And CPU performs the process which gives various instructions with respect to each part of the cutting device 1 by running the program stored in ROM.

Specifically, the control unit 9 functions as a determination unit that determines the uneven position of the corrugated tube 10 positioned between the irradiation unit 51 and the light receiving unit 52 based on the detection signal output from the light receiving unit 52, Based on the determination result of the determination unit, the delivery unit 30 and the positioning unit 70 are operated to position the corrugated tube 10, and a function as a cutting control unit that causes the cutting unit 80 to cut the positioned corrugated tube 10.

<Process flow>
FIG. 10 is a diagram showing the flow of each process for the corrugated tube 10. FIG. 11 to FIG. 15 are schematic side views of the periphery of the cut portion in the processing process as viewed from the light receiving unit 52 side.

The operator inputs a long dimension (necessary dimension) required for the corrugated tube 10 and inputs information (for example, a size number) for specifying the size of the corrugated tube 10, and then performs a cutting process. When a start instruction is given, the control unit 9 accepts the input operation and starts a series of cutting processes.

The delivery unit 30 is driven by the

drive units

314 and 324 in synchronization with the corrugated tube 10 sandwiched between the pair of

delivery belts

313 and 323. Thereby, the

delivery belts

313 and 323 are rotated in synchronization, and the corrugated tube 10 sandwiched between the

delivery belts

313 and 323 is delivered along the path P (step ST1 in FIG. 10).

When the corrugated tube 10 is sent along a path P by a predetermined distance longer than a reference length (the length of the corrugated tube 10 that should be sent at the minimum when cutting) (when branched to Yes in step ST2 in FIG. 7), The control unit 9 causes the position detection unit 50 to detect the uneven position of the corrugated tube 10. Specifically, the control unit 9 causes the irradiation unit 51 to irradiate the corrugated tube 10 with the irradiation light L <b> 1, and causes the light receiving unit 52 to receive the passing light passing through the corrugated tube 10 in the irradiation light L <b> 1. Accordingly, a signal corresponding to the amount of light received by the light receiving unit 52 is input to the control unit 9 in real time.

In the process in which the corrugated tube 10 moves along the path P, as shown in FIG. 11, at the timing when the irradiation light L1 is irradiated onto the annular convex portion 12, the reflected light reflected by the annular convex portion 12 increases and is received. The amount of passing light received by the unit 52 decreases.

On the other hand, in the process in which the corrugated tube 10 moves along the path P, at the timing when the irradiation light L1 is applied to the annular recess 14 as shown in FIG. The passing light that passes through the gap between the parts 12 increases, and the amount of the passing light received by the light receiving part 52 increases.

And the control part 9 determines the uneven | corrugated position of the corrugated tube 10 located between the irradiation part 51 and the light-receiving part 52 based on the time change of the received light quantity obtained from the detection signal which the light-receiving part 52 outputs.

In this embodiment, the relative positional relationship between the locking portion 710 and the distal end portion 713a and the relative positional relationship between the locking portion 720 and the distal end portion 723a can be adjusted by the adjusting portion of the screw mechanism. Thereby, the latching | locking part 710 of the 1st positioning member 71 can be distribute | arranged to a predetermined position along the axial direction from the 1st holding | maintenance part 73 of the cutting device 1, and it extends along the axial direction from the 2nd holding | maintenance part 74. The locking portion 720 of the second positioning member 72 can be disposed at a predetermined position. For this reason, even if it changes to the corrugated tube 10 from which a pitch differs, the axial direction of the 1st positioning member 71 and the 2nd positioning member 72 is adjusted by adjusting the position of the latching | locking part 710,720 according to the variation | change_quantity of a pitch. Can be easily adjusted.

In this embodiment, the tip 713a of the screw 713 of the first positioning member 71 is attracted and held by the first holding portion 73 by magnetic force, and the tip 723a of the screw 723 of the second positioning member 72 is held by the second holding portion 74. It is attracted and held by magnetic force. Since the holding mode uses magnetic force in this way, the operator can easily attach and detach the first positioning member 71 and the second positioning member 72 to the apparatus when changing to the corrugated tube 10 having a different diameter. Can do. In particular, in the present embodiment, the tip 713a of the screw 713 and the magnet 732 are fixed by a magnetic force only, and the tip 723a of the screw 723 and the magnet 742 are merely contacted by a magnetic force. . For this reason, in this embodiment, the operator can easily attach and detach the positioning member to and from the apparatus as compared with other modes in which the screw (held portion) of the positioning member is screwed into the screw hole of the holding portion. Can do.

In the present embodiment, the first positioning member 71 can be attached to the apparatus after the relative positional relationship between the locking portion 710 and the tip portion 713a is adjusted in advance by the adjusting portion of the screw mechanism. Similarly, the second positioning member 72 can be attached to the apparatus after the relative positional relationship between the locking portion 720 and the tip portion 723a is adjusted in advance by the adjusting portion of the screw mechanism. In this case, compared with the aspect in which the relative positional relationship is adjusted in a state where the first positioning member 71 and the second positioning member 72 are attached to the apparatus, the operation is simplified, and the burden on the operator (for example, the operator) The burden of noting that it does not touch other parts in the apparatus is reduced.

Further, in this embodiment, the locking portion 710 is fixed to the base, and the screw 713 screwed to the base is advanced and retracted, so that the locking portion 710 and the distal end 713a are relative to each other. The positional relationship can be adjusted. Similarly, a locking portion 720 is fixed to the base portion, and the relative positional relationship between the locking portion 720 and the tip portion 723a is adjusted with a simple structure in which a screw 723 screwed to the base portion is advanced and retracted. can do.

In the present embodiment, the corrugated tube 10 can be positioned with high accuracy by sandwiching the corrugated tube 10 from both sides in the direction orthogonal to the axial direction using the first positioning member 71 and the second positioning member 72. it can. And since the corrugated tube 10 positioned from both sides in this way is cut by the cutting part 80, the corrugated tube 10 can be cut with high positional accuracy. Moreover, the opening area of the corrugated tube 10 after cutting becomes large by cutting with the annular convex portion 12, and the situation where the electric wire or the like inserted into the corrugated tube 10 comes into contact with the opening end of the corrugated tube 10 and is damaged. Can be reduced.

In this embodiment, the locking portion 710 of the first positioning member 71 and the locking portion 720 of the second positioning member 72 are in contact with the same annular recess 14 from both sides in the direction orthogonal to the axial direction. For this reason, it can suppress that the corrugated tube 10 curves in the case of positioning. Moreover, since the annular convex part 12 adjacent to the positioned annular concave part 14 is cut, the corrugated tube 10 can be cut with high positional accuracy.

In this embodiment, the restricting portion 731 (first restricting portion) restricts the movable direction of the first positioning member 71 relative to the first holding portion 73 only in the axial direction of the corrugated tube 10. The restricting portion 741 (second restricting portion) restricts the movable direction of the second positioning member 72 relative to the second holding portion 74 only in the axial direction of the corrugated tube 10. For this reason, even if the 1st positioning member 71 and the 2nd positioning member 72 contact | abut to the corrugated tube from the orthogonal direction orthogonal to an axial direction, the 1st positioning member 71 and the 2nd positioning member 72 shift | deviate to this orthogonal direction ( As a result, the position of the corrugated tube 10 is prevented from shifting). Moreover, not only the adsorption | suction holding | maintenance by the magnet 732 but the fall of the 1st positioning member 71 is prevented because the control part 731 suspends and hold | maintains the base part 711. FIG.

Moreover, in this embodiment, the 1st positioning member 71, the 2nd positioning member 72, and the cutting blade 81 can be attached or detached with respect to the cutting device 1 separately. For this reason, the operator can select a member that needs to be replaced (for example, the first positioning member 71 and the like), and only the member that needs to be replaced can be easily attached to and detached from the apparatus.

{Modification}
In the above embodiment, as an aspect in which the adjusting portion adjusts the relative positional relationship between the locking portion and the held portion in the positioning member along the axial direction of the corrugated tube, the locking portion is fixed to the base portion. Although the aspect to which a to-be-held part can move along this axial direction was demonstrated, it is not restricted to this aspect. For example, the held portion may be fixed to the base, and the locking portion may be movable along the axial direction. In this case, for example, a screw can be screwed into the screw hole of the locking portion penetrating in the axial direction, and an adjusting unit that adjusts the position of the locking portion in the axial direction by rotating the screw can be employed. As another example, a plurality of fitting grooves are provided in the base portion of the positioning member along the axial direction of the corrugated tube, and a protruding portion provided in the locking portion is fitted into any of the plurality of fitting grooves. Thus, an adjustment unit that adjusts the position of the locking portion in the axial direction can be employed. Moreover, the aspect which can move both to-be-held part and the latching | locking part along an axial direction may be sufficient.

In the above embodiment, the tip 713 a of the screw 713 of the first positioning member 71 contacts the magnet 732 and is attracted and held by magnetic force, and the tip 723 a of the screw 723 of the second positioning member 72 is attached to the magnet 742. Although the aspect which contacts and is adsorbed-held by magnetic force was demonstrated, it is not restricted to this aspect. For example, a member may be inserted between the tip 713a of the screw 713 and the magnet 732 and between the tip 723a of the screw 723 and the magnet 742. As the member, a member having a low magnetic permeability to such an extent that the above-described adsorption / holding action is maintained can be used. In addition to the embodiment in which the held portion is a magnetic body and the holding portion has a magnet as in the above embodiment, the held portion may be a magnet and the holding portion may have a magnetic body. Absent.

In the above embodiment, the mode in which the light receiving unit 52 receives the passing light that has passed through the corrugated tube 10 has been described. However, the present invention is not limited to this mode. For example, the light receiving unit 52 may receive reflected light reflected by the surface of the corrugated tube 10. In addition to the aspect of detecting the concave / convex position of the corrugated tube 10 according to the amount of light received in this way, the aspect of detecting the concave / convex position of the corrugated tube 10 by image processing after imaging the corrugated tube 10 with a camera or the like. It does not matter.

Moreover, in the said embodiment, the positioning part 70 and the cutting | disconnection part 80 are being fixed to the fixed position along the path | route P, and when the sending part 30 sends out the corrugated tube 10, the positioning part 70, the cutting | disconnection part 80, and corrugated Although it was the aspect which changes the relative positional relationship with the tube 10, it is not restricted to this aspect. For example, the relative positional relationship between the positioning unit 70 and the cutting unit 80 and the corrugated tube 10 may be changed by moving the positioning unit 70 and the cutting unit 80 along the path P.

Moreover, in the said embodiment, although the guide part 60 was the aspect provided with the 1st guide part 61 and the 2nd guide part 62, it is not restricted to this aspect. The guide unit 60 may be configured to include one or three or more unit guide units.

Moreover, although the said embodiment demonstrated the cutting device 1 provided with the sending part 30, the position detection part 50, the guide part 60, the positioning part 70, and the cutting part 80, it is not restricted to this aspect. The aspect which combines the positioning device of the corrugated tube 10 provided with the sending part 30, the position detection part 50, the guide part 60, the positioning part 70, etc. with other process parts other than a cutting process may be sufficient.

In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts.

Although the present invention has been described in detail as described above, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Cutting device 9 Control part 10 Corrugated tube 30 Sending part 50 Position detection part 51 Irradiation part 52 Light receiving part 60 Guide part 70 Positioning part 71 1st positioning member 72 2nd positioning member 73 1st holding part 74

2nd holding part

710, 720 Locking

part

713, 723 Screw 731, 741

Restriction part

732, 742 Magnet 80 Cutting part 81 Cutting blade L1 Irradiation light

Claims

A positioning member for the corrugated tube, wherein the annular convex portion and the annular concave portion can be attached to and detached from a device for processing the corrugated tube alternately continuing along the axial direction,
A locking portion for positioning the corrugated tube by contacting the tip portion with the annular recess,
A held portion that is attracted and held by a magnetic force at a holding portion of the device at a fixed position along the axial direction;
An adjustment unit that adjusts the relative positional relationship between the locking portion and the held portion along the axial direction;
A corrugated tube positioning member.
The corrugated tube positioning member according to claim 1,
The locking portion is fixed to the base, a screw hole is formed in the base, and a screw is screwed into the screw hole so as to be able to advance and retreat along the axial direction.
A tip portion of the screw is the held portion that is attracted and held by a magnetic force to the holding portion of the device at a fixed position along the axial direction;
A corrugated tube positioning member, wherein the screwed structure of the screw and the screw hole is an adjusting portion that adjusts a relative positional relationship between the locking portion and the held portion along the axial direction.
A delivery section for delivering the corrugated tube along its axial direction;
The positioning member according to claim 1 or 2, wherein the first positioning member is disposed on one side in an orthogonal direction orthogonal to the axial direction;
A first holding portion that holds the first positioning member by magnetic force;
Between the first contact position where the locking portion of the first positioning member contacts the annular recess and the first spaced position where the locking portion is separated from the annular recess, the first holding portion and the A first moving unit that moves the first positioning member held by the first holding unit;
The positioning member according to claim 1 or 2, wherein the second positioning member is disposed on the other side in the orthogonal direction;
A second holding part that holds the second positioning member by magnetic force;
The second holding portion and the second holding position between the second contact position where the locking portion of the second positioning member contacts the annular recess and the second spaced position where the locking portion is separated from the annular recess. A second moving unit that moves the second positioning member held by the second holding unit;
A positioning device comprising:
The positioning device according to claim 3,
The first holding portion has a first restricting portion that restricts the movable direction of the first positioning member relative to the first holding portion only in the axial direction.
The second holding unit includes a second regulating unit that regulates a movable direction of the second positioning member relative to the second holding unit only in the axial direction.
A positioning device according to claim 3 or claim 4,
The corrugated tube is cut along a plane orthogonal to the axial direction in a state where the first positioning member is located at the first contact position and the second positioning member is located at the second contact position. Cutting part;
A cutting device comprising:
The cutting device according to claim 5,
The locking portion of the first positioning member positioned at the first contact position and the locking portion of the second positioning member positioned at the second contact position are the same with respect to the same annular recess. Abut from both sides in the orthogonal direction,
The cutting device cuts an annular convex portion adjacent to the annular concave portion that is in contact with the engaging portion of the first positioning member and the engaging portion of the second positioning member.
The cutting device according to claim 5 or 6,
A cutting apparatus in which the first positioning member, the second positioning member, and the blade of the cutting unit are individually detachable from the apparatus.