Wire rod feeding detection device

Abstract

The present invention provides a wire material feeding detection device including a chuck device (20) that directly holds a wire material (12), and a feeding drive device (70) that moves the wire material (12) together with the chuck device (20) in a feeding direction of the wire material (12). The wire material feeding detection device includes a detected piece (52) that is provided integrally with the chuck device (20), and a detection device (50) that detects movement of the detected piece (52). The chuck device (20) includes a movable portion (22) that holds the wire material (12) and a receiving portion (24) that receives the wire material (12). The chuck device (20) is mounted to a linearly reciprocatingly movable movement guide member (32) of a chuck movement guide device (30) that restricts feeding movement of the wire material (12), directly detects feeding of the wire material (12), and can accurately detect abnormalities.

Description

TECHNICAL FIELD

[0001] The present application relates to a wire material feeding detection device that detects feeding of a wire material that is a metal member to be mounted to various members such as a slide fastener, to a processing device. BACKGROUND

[0002] Conventionally, as a method of detecting a feeding abnormality of a wire material, when a force other than a constant state is applied to the wire material due to an abnormality such as clogging of the wire material at the time of supply, the force deforms a spring for detection together with the wire material, and an abnormality is detected by sensing the deformation using a switch or a sensor. In addition, in Patent Literature 1, a rotating body is brought into contact with a welding wire that is a wire material, and if a supply abnormality of the welding wire occurs, the rotating state of the rotating body changes, and the feeding abnormality can be detected by detecting the change.

[0003] [Related Art]

[0004] [Patent Literature]

[0005] [Patent Literature 1] Japanese Patent Laid-Open No. 10-296436 SUMMARY

[0006] [Problems to be Solved by the Invention]

[0007] In the case of the spring deforming together with the wire material to detect a feeding abnormality in the background art, even when the wire material is normally fed, if the spring deforms due to some external force, the feeding abnormality is determined. In addition, in the case of the detection method disclosed in Patent Literature 1, the feeding abnormality of the wire material is not directly detected, and thus in the case where some external force is applied to the rotating body, or an abnormality occurs in the contact between the rotating body and the wire material, the rotation of the rotating body changes, and the feeding of the wire material can be detected as abnormal even when it is normal. Conversely, there is also a problem that even when a feeding abnormality of the wire material occurs, if the rotating body rotates in a constant state, the abnormality is not detected.

[0008] The present application is made in view of the problems in the background art, and aims to provide a wire material feeding detection device that directly detects feeding of an actual wire material, and can accurately detect an abnormality.

[0009] [Technical Means for Solving the Problems]

[0010] The present application is a wire material feeding detection device including a chuck device that directly holds a wire material, a feeding drive device that moves the wire material together with the chuck device in a feeding direction of the wire material, a detected piece that is provided integrally with the chuck device, and a detection device that detects movement of the detected piece.

[0011] The chuck device includes a movable portion that grips the wire material and a receiving portion, and is formed in a manner that enables the wire material to be gripped. Furthermore, the chuck device is installed on a linearly reciprocatingly movable movement guide member of a chuck movement guide device that restricts the feed movement of the wire material.

[0012] The receiving portion of the chuck device is installed on a holding member that is installed on a top end portion of the linearly reciprocatingly movable movement guide member. The movement guide member is disposed so as to be able to advance and retreat in the movement direction of the wire material with respect to a main body portion of the chuck movement guide device, and is biased in the direction in which the movement guide member protrudes with respect to the main body portion by a coil spring.

[0013] The chuck movement guide device is fixed to a mounting member that does not move in the feed direction of the wire material. The mounting member includes a guide piece that has a through hole through which the wire material passes between the movable portion and the receiving portion.

[0014] The mounting member can also include a plate that is able to displace and return when force is applied in a direction that intersects the feed direction of the wire material, and an auxiliary detected piece is provided on the mounting member, and the wire material feed detection device includes an auxiliary detection device that detects displacement of the auxiliary detected piece by approaching the auxiliary detected piece.

[0015] The wire material is used for a metal fitting that is installed on a zipper, and is fixed by being cut and fastened at the end portion of a chain row of the zipper. The wire material is fed to a cutting and fastening processing device that performs cutting and fastening by the feed drive device, and the mounting member is installed on the cutting and fastening processing device.

[0016] [Effects of the Invention]

[0017] The wire material feed detection device of the present invention directly holds a wire material that is fed in the length direction, moves the wire material in the feed direction using a chuck movement guide device, and detects movement of the chuck movement guide device using a detection device, and thus can directly detect movement of the wire material and accurately detect feed abnormalities. Furthermore, the wire material is fed to a prescribed position by the chuck device and the chuck movement guide device of the wire material, and thus the structure is simple and the reliability is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective view of a wire material feed detection device according to an embodiment of the present invention.

[0019] Figure 2 A plan view of a wire material feed detection device according to an embodiment of the present invention.

[0020] Figure 3 An enlarged perspective view of a chuck device of a wire material feeding detection device according to an embodiment of the present application.

[0021] Figure 4 An enlarged front view of a chuck device of a wire material feeding detection device according to an embodiment of the present application.

[0022] Figure 5 A perspective view of a chuck device of a wire material feeding detection device according to an embodiment of the present application, viewed from the back surface side top.

[0023] [Explanation of symbols]

[0024] 10: Wire material feeding detection device

[0025] 12: Wire material

[0026] 14: Shearing and fastening processing device

[0027] 14a: Base material

[0028] 20: Chuck device

[0029] 22a: Tab

[0030] 22: Movable portion

[0031] 24: Receiving portion

[0032] 25: Movable rod

[0033] 26: Cylinder portion

[0034] 28: Retaining member

[0035] 30: Chuck moving guide device

[0036] 31, 41, 46, 54, 61: Bolts

[0037] 32: Moving guide member

[0038] 33: Coil spring

[0039] 34: Main body portion

[0040] 40: Mounting member

[0041] 40a, 40b: End portions

[0042] 42: Fastening processing portion

[0043] 43: Through-hole member

[0044] 44: Guide piece

[0045] 44a: Insertion hole

[0046] 50: detection device

[0047] 52: detected piece

[0048] 52a, 62a: detection end

[0049] 60: auxiliary detection device

[0050] 62: auxiliary detected piece

[0051] 70: feed drive device

[0052] 71, 72: feed roller

[0053] 73, 74: gear

[0054] 75: air cylinder

[0055] 76: mechanism portion

[0056] 77: lever DETAILED DESCRIPTION

[0057] Hereinafter, based on Figures 1-5 An embodiment of the present application will be described. Figure 1 Fig. 1 is a perspective view of a wire material feed detection device according to an embodiment of the present application. Figure 2 Fig. 2 is a plan view of the wire material feed detection device according to the embodiment of the present application. Figure 3 Fig. 3 is an enlarged perspective view of a chuck device of the wire material feed detection device according to the embodiment of the present application. Figure 4 Fig. 4 is an enlarged front view of the chuck device of the wire material feed detection device according to the embodiment of the present application. Figure 5 Fig. 5 is a perspective view of the chuck device of the wire material feed detection device according to the embodiment of the present application, viewed from the back surface side upper portion. The wire material 12 detected by the wire material feed detection device 10 according to the embodiment of the present application is a thin tape-like wire material for forming a lower stopper of a zipper, and is cut at a prescribed width by a cutting and fastening processing device 14 to be described later, and is fastened and fixed to a lower end portion of a tooth row of a chain tape of a zipper, which is not shown.

[0058] The wire material feed detection device 10 includes a chuck device 20 that directly holds the wire material 12 fed in a horizontal direction by a feed drive device 70 to be described later along the cutting and fastening processing device 14, and a chuck movement guide device 30 that limits movement of the chuck device 20 to reciprocating movement in a feed direction of the wire material 12. The wire material feed detection device 10 further includes a mounting member 40 that holds the chuck device 20 or the chuck movement guide device 30, a detected piece 52 provided integrally with the chuck device 20, and a detection device 50 that detects movement of the detected piece 52.

[0059] The chuck device 20 includes a movable portion 22 that grips the wire-like material 12 and a receiving portion 24. The movable portion 22 is fixed to the tip end portion of a movable rod 25 of a cylinder portion 26 that functions as an air cylinder and is disposed so as to be able to advance and retreat with respect to the cylinder portion 26. The protruding direction of the movable portion 22 is the horizontal direction, and is a direction that is orthogonal to the advancing direction of the wire-like material 12 toward the receiving portion 24. The movable portion 22 has two pairs of tabs 22a, and each pair of tabs 22a is disposed so as to be able to slide along mutually facing side surfaces of the receiving portion 24. The wire-like material 12 is inserted in the horizontal direction between the pairs of tabs 22a. Therefore, the wire-like material 12 is supported by the tabs 22a of the movable portion 22 and is gripped by the movable portion 22 and the receiving portion 24. The receiving portion 24 that grips the wire-like material 12 together with the movable portion 22 is fixed to the holding member 28 together with the cylinder portion 26. Furthermore, the holding member 28 is fixed to the end portion of the movement guide member 32 that is disposed so as to be able to advance and retreat with respect to the chuck movement guide device 30.

[0060] The chuck movement guide device 30 includes a main body portion 34, and the pair of movement guide members 32 are disposed so as to be able to perform linear reciprocating motion by protruding and retracting with respect to the main body portion 34. The movement guide member 32 has the holding member 28 that fixes the receiving portion 24 of the chuck device 20 and the cylinder portion 26 installed at the tip end portion in the protruding direction thereof. The main body portion 34 of the chuck movement guide device 30 restricts the movement of the movement guide member 32 to the advancing direction of the wire-like material 12, and the movement guide member 32 is disposed so as to be able to advance and retreat in the movement direction of the wire-like material 12 with respect to the main body portion 34. Between the pair of movement guide members 32 of the chuck movement guide device 30, a spiral spring 33 for returning the holding member 28 that moves in the advancing direction of the wire-like material 12 to the opposite direction is disposed.

[0061] With respect to the mounting member 40, one end portion 40a that is the tip end in the advancing direction of the wire-like material 12 is fixed to the base material 14a of the shearing and fastening processing device 14 by a bolt 41. The mounting member 40 includes a metal spring plate material, the plate surface direction of which is disposed in the vertical direction, and the advancing direction of the wire-like material 12 coincides with the length direction of the mounting member 40, and the end portion 40a is held to the base material 14a. Therefore, the mounting member 40 is disposed so as to be unable to move in the advancing direction of the wire-like material 12, and the other end portion 40b of the mounting member 40 becomes the tip end side of the cantilever beam and is formed so as to be able to swing in the horizontal direction that intersects the advancing direction of the wire-like material 12.

[0062] Further, the mounting member 40 is arranged along the side surface of the shearing and fastening processing device 14 and is provided in a shape bent by 90 degrees in the horizontal direction toward the fastening processing portion 42 in the vicinity of the fastening processing portion 42. A through-hole member 43 for passing the wire-like material 12 to restrict the moving direction is provided on the outer side of the end portion 40b of the mounting member 40 and the outer side of the bent portion of the mounting member 40, respectively, so as to be able to stably supply the wire-like material 12 to the fastening processing portion 42.

[0063] In the end portion 40b which is the other end portion of the mounting member 40, a guide piece 44 for stably passing the wire-like material 12 between the movable portion 22 and the receiving portion 24 is provided, and the guide piece 44 has a slit-like insertion hole 44a through which the wire-like material 12 can pass. The guide piece 44 is fixed to the other end portion 40b of the mounting member 40 by a bolt 46.

[0064] Below the chuck device 20 and the main body portion 34 of the chuck moving guide device 30, a detected piece 52 which is integrally fixed to the receiving portion 24 and the holding member 28 of the chuck device 20 by a bolt 54 is provided. The detected piece 52 is provided so as to be able to move integrally with the chuck device 20, and a detection device 50 which detects the detected piece 52 is provided in the moving direction close to the detected piece 52. The detection device 50 is fixed to the end portion 40b of the mounting member 40 which is fixed with respect to the shearing and fastening processing device 14. The detection device 50 is an optical sensor or a proximity sensor which detects whether or not the detection end portion 52a of the detected piece 52 is located at a position facing the detection device 50, and for example, a micro photoelectric sensor including a light emitting element and a light receiving element can be used.

[0065] With respect to the detected piece 52, the detection end portion 52a approaches the detection device 50 at a feeding position to which the chuck device 20 which holds the wire-like material 12 moves in the feeding direction from the position on the upstream side of the wire-like material 12 in the feeding direction, and the detection device 50 detects the detection end portion 52a of the detected piece 52. At this time, the moving guide member 32 of the chuck moving guide device 30 is slidingly accommodated in the main body portion 34, and the moving direction of the wire-like material 12 and the moving direction of the detected piece 52 are restricted.

[0066] Further, the wire-like material feeding detection device 10 of the embodiment includes an auxiliary detected piece 62 which is integrally provided on the inner side of the bend of the mounting member 40 by a bolt 61, and an auxiliary detection device 60 which detects the flexing movement of the auxiliary detected piece 62. The auxiliary detection device 60 is fixed to the base material 14a of the shearing and fastening processing device 14 and includes an optical sensor or a proximity sensor which detects whether or not the detection end portion 62a of the auxiliary detected piece 62 is located at a position facing the auxiliary detection device 60. The auxiliary detection device 60 can also use, for example, a micro photoelectric sensor including a light emitting element and a light receiving element.

[0067] The wire material 12 fed by the wire material feeding and detecting device 10 of the embodiment is used for mounting of a metal fitting such as a lower stopper of a zipper, which is fixed by being cut and fastened at the end of a chain row of the zipper, thereby forming the lower stopper.

[0068] In the cutting and fastening processing device 14, a pair of feeding rollers 71, 72 of a feeding drive device 70 that feeds the wire material 12 to the fastening processing portion 42 are provided, and the wire material 12 is held between the feeding rollers 71, 72 and intermittently fed by a necessary length. The feeding drive device 70 includes a motor or the like (not shown) that drives the feeding rollers 71, 72, and the feeding rollers 71, 72 are intermittently rotated by a gear 73, a gear 74 via the control device (not shown). The cutting and fastening processing device 14 performs cutting of the wire material 12 and mounting and fastening of the wire material 12 to the chain belt during the stop of the feeding rollers 71, 72 of the intermittently driven feeding drive device 70.

[0069] The cutting and fastening processing device 14 is operated by an air cylinder 75 for processing, and a mechanism portion 76 driven by a rod 77 of the air cylinder 75 is connected to the fastening processing portion 42, and cutting and fastening processing of the wire material 12 is performed by the advance and retreat operation of the rod 77 of the air cylinder 75.

[0070] Next, the operation and effect of the wire material feeding and detecting device 10 and the cutting and fastening processing device 14 of the embodiment will be described below. The wire material feeding and detecting device 10 detects whether the feeding of the wire material 12 to the fastening processing portion 42 of the cutting and fastening processing device 14 is normally performed, and the wire material is fed to the fastening processing portion 42 by the feeding rollers 71, 72 held by the intermittent driving of the feeding drive device 70 and by a prescribed length. In the fastening processing portion 42, the wire material 12 is cut by a prescribed width, and is mounted to and fastened to the chain belt at the lower end of the chain row of the pair of chain belts.

[0071] At this time, in the intermittent feeding of the wire material 12, with respect to the wire material feeding and detecting device 10, when the wire material 12 is stopped, the movable portion 22 of the collet device 20 holds the wire material 12 between the receiving portion 24. Then, if the feeding drive device 70 is operated to feed the wire material 12 by a prescribed length, the collet device 20 holds the wire material 12, and thus the holding member 28 to which the collet device 20 is mounted moves together with the wire material 12 in the feeding direction of the wire material 12. By the movement of the holding member 28, the detected piece 52 fixed to the holding member 28 moves by a distance equal to the movement distance of the wire material 12, and moves to a position at which the detection end portion 52a faces the detection device 50. Thus, the detection device 50 detects the detected piece 52, and detects the normal movement of the wire material 12 that moves integrally with the detected piece 52.

[0072] Then, when the movable portion 22 of the chuck device 20 retreats and the holding of the wire-like material 12 is released, the holding member 28 on which the chuck device 20 is mounted returns to the standby position by the force applied by the coil spring 33, and thus the chuck device 20 becomes a state in which it can operate. Next, when the chuck device 20 operates while the wire-like material 12 is stopped, the wire-like material 12 is gripped by the movable portion 22 and the receiving portion 24, and the above-described operation is repeated.

[0073] When the wire-like material 12 is fed normally, the above-described operation continues, but in the case where the wire-like material 12 is not fed by a prescribed amount due to abnormal feeding, the amount of movement of the wire-like material 12 gripped by the chuck device 20 is insufficient, and the amount of movement of the chuck device 20 also becomes small. Thus, the amount of movement of the holding member 28 on which the chuck device 20 is mounted also becomes small, and a state in which the detection device 50 cannot detect the detected piece 52 is reached. Thus, the abnormal feeding of the wire-like material 12 can be detected by the control device or the like connected to the detection device 50.

[0074] Further, when the feeding resistance of the wire-like material 12 increases and a certain or greater tension is applied to the wire-like material 12, the mounting member 40, which is a plate member, is forced in the horizontal direction by the tension of the wire-like material 12. Due to this force, the mounting member 40 is bent and flexes inward, and the flexure of the auxiliary detected piece 62 is detected by the auxiliary detection device 60. Thus, the abnormal feeding of the wire-like material 12 and the fact that a large tension is being applied to the wire-like material 12 can be detected by the control device or the like connected to the auxiliary detection device 60.

[0075] The wire-like material feeding detection device 10 according to the embodiment directly holds the wire-like material 12 by the chuck device 20, and the detection device 50 can detect the detected piece 52 by the movement of the holding member 28 on which the chuck device 20 is mounted, and thus the movement of the wire-like material 12 can be confirmed, and thus reliable detection can be achieved and false detection can be eliminated. Furthermore, the structure is simple in that only the wire-like material 12 is gripped, and the reliability is high. The movable portion 22 has two pairs of tabs 22a, and the wire-like material 12 is gripped by the tabs 22a and the receiving portion 24, and thus the wire-like material 12 can be stably and accurately gripped. Further, in the case where an abnormal tension is applied to the wire-like material 12, the auxiliary detected piece 62 can be detected by the auxiliary detection device 60, and thus abnormality such as clogging of the wire-like material can be reliably detected.

[0076] Furthermore, the wire-like material feeding detection device of the present application is not limited to the embodiment, and the holding of the wire-like material can be performed by a gripping device other than the chuck device, as long as the wire-like material can be directly held. Regarding the detection of the movement of the wire-like material, as long as the detection device can confirm that the detected piece has reached a prescribed position, the detection method is not limited.

Claims

1. A linear material feeding detection device, characterized in that, Comprising: a chuck device (20) that directly holds a wire-like material (12); a feed driving device (70) that moves the wire-like material (12) together with the chuck device (20) in a feed direction of the wire-like material (12); a detected piece (52) that is provided integrally with the chuck device (20); and a detection device (50) that detects movement of the detected piece (52), wherein the chuck device (20) includes a movable portion (22) that grips the wire-like material (12) and a receiving portion (24) that forms a space in which the wire-like material (12) can be gripped, the chuck device (20) is mounted to a linearly reciprocatingly movable movement guide member (32) of a chuck movement guide device (30) that restricts feed movement of the wire-like material (12), the receiving portion (24) of the chuck device (20) is mounted to a holding member (28) that is mounted to the linearly reciprocatingly movable movement guide member (32), the chuck movement guide device (30) is fixed to a mounting member (40) that does not move in the feed direction of the wire-like material (12), the mounting member (40) includes a plate that can be displaced and can be restored when a force is applied in a direction that intersects the feed direction of the wire-like material (12), an auxiliary detected piece (62) is provided in the mounting member (40), and the wire-like material feed detection device includes an auxiliary detection device (60) that detects displacement of the auxiliary detection device (60) by approaching the auxiliary detected piece (62).

2. The wire rod feeding detection device according to claim 1, wherein The holding member (28) is mounted to a top end portion of the movement guide member (32).

3. The wire rod feeding detection device according to claim 1, wherein The movement guide member (32) is disposed so as to be able to advance and retreat in the movement direction of the wire-like material (12) with respect to a main body portion (34) of the chuck movement guide device (30), and a coil spring (33) applies a force in a direction in which the movement guide member (32) protrudes with respect to the main body portion (34).

4. The wire rod feeding detection device according to claim 1, wherein The mounting member (40) includes a guide piece (44) that has a through-hole (44a) through which the wire-like material (12) passes between the movable portion (22) and the receiving portion (24).

5. The wire rod feeding detection device according to claim 1, wherein The wire-like material (12) is used for a metal fitting that is mounted to a zipper, and is fixed by being cut and fastened at an end portion of a fastener string of the zipper.

6. The wire rod feeding detection device according to claim 5, wherein The wire-like material (12) is fed by the feed driving device (70) to a cutting and fastening processing device (14) that performs cutting and fastening, and the mounting member (40) is mounted to the cutting and fastening processing device (14).

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