JP6867236B2 - Conductor clamp and cutter device - Google Patents

Description

The present invention relates to a wire clamp / cutter device used in a winding machine or the like.

For example, as shown in Patent Document 1 below, in a winding device for making a stator of an electric motor, a plurality of coils are wound continuously, and after winding one coil, the coil is wound. , The lead wire between the winding nozzle and the coil is pulled out by a clamp / cutter device, and the coil side where the winding of the drawn lead wire is completed is cut and separated, and the winding nozzle side is clamped to obtain the next coil. I try to start the winding work.

Such a clamp / cutter device includes a hook for hooking a conducting wire, a clamp for sandwiching the hooked conducting wire between the hooks, and a cutting blade for sliding and contacting the hook to cut the conducting wire. Is being used.

Japanese Patent No. 4456173

However, in the conventional clamp / cutter device, the end of the clamped conductor is opened in a bent state after the winding is completed. Therefore, as shown in FIG. 15, for example, the end Wb of the conductor W is bent. It has become. Therefore, in order to protect the end portion Wb of the conductor W with the resin tube 17, when trying to cover the end portion Wb of the conductor W with the resin tube 17, it is necessary to straighten the end portion Wb of the conductor W before inserting the conductor W. There was a problem that workability was poor.

Therefore, it is an object of the present invention to provide a clamp / cutter device in which the end of a clamped conductor is opened in a straight state after the end of winding.

In order to achieve the above object, the conductor clamp / cutter device of the present invention has a main body movably supported by a driving device and a base end portion fixed to the main body and extended from the main body to the tip portion. A conductor pulling member on which a hook for hooking a conductor is formed, a slide block supported by the main body and moving forward and backward with respect to the main body, and a slide block held so as to be retractable by a predetermined distance with respect to the slide block by a spring. When the slide block moves in the direction of the hook, it is always urged in the protruding direction, and when the slide block moves in the direction of the hook, the clamper that elastically clamps the conducting wire with the hook and the base end side of the slide block are fixed to the slide block. It is supported so as to protrude from the slide block, and when the slide block moves in the direction of the hook and the conductor is clamped by the clamper, the conductor is slidably contacted with the hook and hooked on the hook. The cutting blade for cutting the surface and the slide block are supported so as to extend from the slide block with the base end side fixed to the slide block, and when the slide block moves in the direction of the hook, the side surface of the hook The slide block is provided with a holding plate that is pressed against at least a side surface through which a conducting wire clamped by the clamper passes and that holds the conducting wire hooked on the hook between the side surface and the cutting blade. The first position where the clamper and the holding plate are separated from the hook so that the conductor can be introduced between the hook and the clamper, the conductor is clamped by the clamper, the conductor is cut by the cutting blade, and the conductor is cut. It is at least movable between the second position where the conductor is sandwiched by the presser plate and the third position where the clamp of the conductor is released by the clamper but the conductor is not released by the retainer plate. It is characterized by that.

According to the conductor clamp / cutter device of the present invention, in a state where the slide block is in the first position, the conductor is hooked on the hook and pulled, and then the slide block is brought close to the hook and moved to the second position. Then, the conductor is clamped by the clamper, the conductor is cut by the cutting blade, and the conductor is sandwiched by the holding plate on the side surface of the hook. Next, when the slide block is retracted with respect to the hook and moved to the third position, the clamp of the conducting wire by the clamper is released. When the end of the clamped conductor is pulled out in this state, the conductor is pulled out while being stretched by the holding plate, so that the end of the conductor is straightened and opened. After that, by retracting the slide block with respect to the hook and moving it to the first position, a space for inserting the conductor is formed between the hook and the clamper and the cutting blade, so that the conductor is hooked on the hook again. It becomes possible to attract. As described above, according to the present invention, when the conductor is opened, the conductor is pulled out while being stretched by the holding plate, so that the end of the conductor can be opened in a straightened state, and the end of the conductor can be opened. It is possible to facilitate the work of covering the wire with a resin tube or the like and connecting the end of the conducting wire to the terminal.

According to a preferred embodiment of the conductor clamp / cutter device of the present invention, an insertion groove for the cutting blade is formed on the surface on which the conductor of the hook is hooked, and the cutting blade is inside the insertion groove. It is configured to slide against the wall and cut the conductor. According to this aspect, in a state where the conductor is arranged so as to cross the insertion groove on the hooking surface of the clamp, the cutting blade is inserted into the insertion groove from the direction intersecting the conductor, so that the cut end surface of the conductor is The surface is perpendicular to or close to the axis, and the end of the conducting wire is not sharpened, so that the risk of injury to the operator can be reduced. Incidentally, in the conventional clamp / cutter device, the cutting blade is in sliding contact with the side surface of the hook to cut the conducting wire. Therefore, as shown in FIG. 15, the cut end surface Wa of the conducting wire W is cut diagonally. The tip was sharpened.

Further, in the above aspect, it is preferable that the holding plates are provided in pairs so as to abut on both side surfaces of the hook through which the conducting wire passes when the conducting wire is hooked on the hook. According to this aspect, the slide block moves from the first position to the second position, the conductor is clamped by the clamper, and the conductor is clamped on the side where the conductor is clamped by the cutting blade. The separated side of the conducting wire is also sandwiched between the holding plate and the side surface of the hook. Therefore, when the separated side of the conducting wire is pulled out in this state, the conducting wire is pulled out while being stretched by the holding plate, so that the end portion of the conducting wire is opened in a straightened state.

According to a preferred embodiment of the conductor clamp / cutter device of the present invention, the hook is formed with one or a plurality of holding grooves into which the conductor is hooked. According to this aspect, when the conductor is hooked on the hook, the conductor enters the holding groove and is held, so that the conductor is less likely to shift with respect to the hook, and later clamped by a clamper, cut by a cutting blade, or When sandwiched by the presser plate, the conductors can be prevented from shifting with respect to the hook, and each operation can be ensured.

When opening the conductor, the conductor is pulled out while being stretched by the holding plate, so the end of the conductor can be opened in a straightened state, and the end of the conductor can be covered with a resin tube or the like, or the conductor can be opened. The work of connecting the end to the terminal can be facilitated.

It is an exploded perspective view which shows one Embodiment of the clamp and cutter apparatus of the conductor which concerns on this invention. It is a perspective view of the clamp / cutter device. It is a front view of the clamp / cutter device. It is a top view of the clamp / cutter device. FIG. 5 is a front sectional view of the clamp / cutter device in a state where the slide block is in the first position. It is a front sectional view of the clamp / cutter device in a state where the slide block is in the first position and the conducting wire is hooked. It is a front sectional view of the state in which a slide block is moving to a 2nd position in the clamp / cutter device. It is a front sectional view of the clamp / cutter device in a state where the slide block is moved to the second position. It is a front sectional view of the clamp / cutter device in a state where the separated conductor is pulled out after the slide block is moved to the second position. It is a front sectional view of the clamp / cutter device in a state where the slide block is moved to the third position. It is a front sectional view of the clamp / cutter device in a state where the released conductor is pulled out after the slide block is moved to the third position. It is explanatory drawing for demonstrating operation of a clamp / cutter device in a winding device. It is explanatory drawing which shows the state which covers the end of the conducting wire with a resin tube. It is sectional drawing of the main part which shows the other embodiment of the clamp / cutter apparatus of the conducting wire which concerns on this invention. It is explanatory drawing which shows the state which covers the resin tube on the end of the conducting wire cut by the conventional clamp / cutter device.

As shown in FIGS. 1 to 5, the clamp / cutter device 100 has a square tubular body 101. A flange 102 is formed at the base end of the main body 101, and the flange 102 is fixed to the air cylinder 103 by a bolt 104.

The inside of the main body 101 forms an accommodating portion 105, and the slide block 106 is slidably accommodated in the accommodating portion 105. Further, notches 108 are formed at the upper and lower edges of the opening 107 of the main body 101.

A fitting groove 109 is formed on the base end surface of the slide block 106, and the cylinder rod 136 of the air cylinder 103 is fitted and connected to the fitting groove 109 (see FIG. 5). Then, the slide block 106 is moved forward and backward by the operation of the air cylinder 103.

An insertion hole 111 into which the clamper 110 is inserted is formed in the slide block 106 along the axial direction. Further, a mounting groove 113 on which the cutting blade 112 is mounted is formed on the inner circumference of the insertion hole 111. A screw hole 114 is formed in the cutting blade 112, and a hole 115 is formed in the slide block 106 correspondingly. Then, the cutting blade 112 is fixed to the slide block 106 by inserting the base end portion of the cutting blade 112 into the mounting groove 113, inserting the bolt 116 through the hole 115, and screwing it into the screw hole 114. As shown in FIG. 5, the head end surface of the bolt 116 is flush with the outer surface of the slide block 106 so as not to be an obstacle when the slide block 106 slides in the accommodating portion 105 of the main body 101. There is.

Further, the slide block 106 is formed with a step portion 117 (see FIG. 1), and the base end portion of the pressing plate 118 is attached to the step portion 117. That is, a hole 119 is formed at the base end portion of the holding plate 118, and a screw 120 is inserted into the hole 119 and screwed into the screw hole 121 formed in the step portion 117 to slide the step portion 117. It is attached to block 106. An outwardly bent guide surface 122 is formed at the tip of the pressing plate 118, and the bent portion at the base end of the guide surface 122 forms the pressing portion 123. In this embodiment, the holding plate 118 is fixed to the tip of the upper surface of the slide block 106 and the tip of the lower surface, respectively.

A conductor drawing member 124 is attached to the main body 101. The conductor drawing member 124 has a hook 125 and a base end portion 126 extending from the hook 125 in a rod shape. A screw hole 127 is formed at the tip of the base end portion 126, and a bolt (not shown) inserted from the outside of the main body 101 is screwed into the screw hole 127 so that the conductor drawing member 124 is fixed to the main body 101. It has become. The hook 125 has a hooking surface 128 forming a base end surface, an insertion groove 129 formed in the hooking surface 128, and a pair of side surfaces 131. In the case of this embodiment, the pair of side surfaces 131 of the hook 125 are surfaces arranged vertically as shown in FIG. Then, at the corner of one side surface 131 and the hooking surface 128, three holding grooves 130 into which the conducting wire W hooked on the hook 125 is introduced are formed side by side in this embodiment. The number of holding grooves 130 may be at least one, but preferably two or more, more preferably three, so that the conductor W can be inserted into any of the holding grooves 130 even if the position of the conducting wire W is displaced. The above should be provided. The cutting edge of the cutting blade 112 described above is inserted into the insertion groove 129 so as to be in sliding contact with the inner side wall of the insertion groove 129, and the conducting wire W hooked on the hooking surface 128 of the hook 125 is cut. ..

On the other hand, the clamper 110 is provided on the pressing block 132 for clamping the conducting wire W with the hooking surface 128 of the hook 125, the support shaft 133 extending from the central portion of the base end surface of the pressing block 132, and the outer circumference of the support shaft 133. It has a mounted spring 134 and a spring pin 135 mounted at the base end portion of the support shaft 133. Then, as shown in FIG. 5, the support shaft 133 is inserted into the bearing plate 137 and the bearing plate 138 arranged inside the insertion hole 111, and is slidably supported in the axial direction. The spring 134 is arranged between the bearing plate 137 and the pressing block 132 to constantly urge the clamper 110 in the protruding direction, but the spring pin 135 engages with the bearing plate 137 to further project. Is regulated.

The clamper 110 is used in a winding machine as shown in FIG. 12, for example. In this winding machine, the lead wire W is wound around the winding frame 13 mounted on the tooth portion 11 of the stator core 10 to form the coil C. This winding machine has a conductor introduction cylinder 16 into which a conductor W is introduced, a winding head 14 attached to an upper end portion thereof, and a nozzle 15 extending in the outer diameter direction from the winding head 14. ing. Then, when the lead wire introduction cylinder 16 reciprocates in the axial direction by a drive device (not shown) and the nozzle 15 passes through the slot of the stator core 10 upward, it rotates by a predetermined angle to the slot on the opposite side of the tooth portion 11. When entering, descending the slot and exiting downward, the nozzle 15 orbits around the tooth portion 11 by repeating the operation of rotating again to enter the slot on the opposite side of the tooth portion 11 and ascending again. The winding is made so that the coil C is formed.

In such a winding operation, the clamp / cutter device 100 serves to hold the start end portion of the conductor W from the start of winding until the conductor W is wound a predetermined number of times. Then, when winding is performed a predetermined number of times to form the coil C of one pole, the clamp / cutter device 100 is fed out from the nozzle 15 and extended to the coil C for the next winding operation. I'm going to get the lead wire W. At this time, the nozzle 15 is located at a position protruding from below the stator core 10, and the clamp / cutter device 100 pulls the lead wire W stretched between the stator core 10 and the nozzle 15 by hooking it on the hook 125. Moving. In this way, with the conductor W hooked on the hook 125 of the clamp / cutter device 100, the end of the conductor connected to the coil C already wound is cut at the same time as the clamp of the conductor W in the manner described later. The end of the conducting wire W that is separated and connected to the nozzle 15 is held by the clamp / cutter device 100. Then, the nozzle 15 starts the circumferential operation again with respect to the other tooth portion 11 of the stator core 10, and the winding with respect to the other tooth portion 11 is started. The clamp / cutter device 100 is moved by moving the entire clamp / cutter device 100 shown in FIGS. 2 to 4 by a drive mechanism (not shown) provided in the winding device.

Next, the operation of the clamp / cutter device 100 of the present invention will be described with reference to FIGS. 5 to 11.

FIG. 5 shows a state in which the slide block 106 is in the first position retracted to the maximum with respect to the main body 101. At this time, the pressing block 132, the cutting blade 112, and the pressing plate 118 are separated from the hook 125, and the conducting wire W can be introduced into the space between them and the hook 125. In this state, as described above, the clamp / cutter device 100 moves, and the conducting wire W stretched between the stator core 10 and the nozzle 15 is hooked on the hook 125 and attracted.

FIG. 6 shows a state in which the conductor W is thus hooked on the hook 125. The conductor W is hooked on the hooking surface 128 of the hook 125, extends through the insertion groove 129 formed in the hooking surface 128, and extends through both side surfaces 131. Further, it is inserted into any of the three holding grooves 130 (see FIG. 1), and is in a state of being restricted from being displaced in the lateral direction.

In this state, the cylinder rod 136 is extruded by the operation of the air cylinder 103, and when the slide block 106 moves toward the hook 125, the pressing block 132 abuts on the conductor W as shown in FIG. 7 on the way. The lead wire W is sandwiched between the hook 125 and the pressing block 132. Further, the pressing plate 118 rides on both side surfaces 131 of the hook 125 via the guide surface 122, the pressing portion 123 presses the conducting wire W, and the portion passing through both side surfaces 131 of the conducting wire W is between the holding plate 118 and both side surfaces 131. Hold it.

Then, when the cylinder rod 136 is further extruded and the slide block 106 moves toward the hook 125, the spring 134 is compressed and the pressing block 132 pulls the conducting wire W on the hook 125's hooking surface 128 as shown in FIG. The cutting blade 112 and the pressing plate 118 fixed to the slide block 106 further move toward the hook 125 while maintaining the state of being sandwiched between the slide block 106 and the slide block 106 as close as possible to the hook 125. Reach the position. At this time, the cutting blade 112 is inserted into the insertion groove 129 and slides in contact with the inner surface of the insertion groove 129 to cut the conducting wire W across the insertion groove 129. Since the conductor W is cut from a direction substantially perpendicular to the cutting blade 112, the cut end surface Wa is a surface substantially perpendicular to the axis as shown in FIG. Further, even if the conductor W is cut, one end of the conductor W is clamped by the pressing block 132 and pressed against one side surface 131 by one pressing plate 118, and the other end of the conductor W is pressed. Since the portion is pressed against the other side surface 131 by the other pressing plate 118, it is not immediately released.

Then, in this state, when the entire clamp / cutter device 100 is retracted by a drive mechanism (not shown), as shown in FIG. 9, the end of the conductor W that has been cut and not clamped is pressed against the side surface 131 of the hook 125. It is pulled out from between the plate 118 and released. At this time, the holding plate 118 corrects the bending of the conducting wire W, and the conducting wire W has a straightened shape. The end of the conductor W that has been cut and not clamped is the end that is connected to the coil C side (see FIG. 12) that has already been wound.

The other end of the cut lead wire W is clamped between the hooking surface 128 of the hook 125 and the pressing block 132, and in that state, the winding introduction cylinder 16 shown in FIG. 12 operates. , The nozzle 15 initiates winding with respect to another tooth portion 11 of the stator core 10. Then, when the tooth portion 11 is wound to form the coil C, as shown in FIG. 10, the slide block 106 is slightly retracted to the third position by the operation of the air cylinder 103, and the conductor W becomes the third position. The clamp is released. At this time, the cutting blade 112 is also extracted from the insertion groove 129. Even if the conductor W is clamped, the conductor W is sandwiched between the holding plate 118 and the side surface 131 of the hook 125, so that the conductor W is not immediately released.

Then, as shown in FIG. 11, the entire clamp / cutter device 100 is retracted by a drive mechanism (not shown), and the conducting wire W held by the pressing plate 118 is pulled out from between the pressing plate 118 and the side surface 131. As a result, the end portion of the conducting wire W is in a state of being straightened by correcting the bending by the pressing plate 118.

As shown in FIG. 13, the end of the conductor W wound in this way extends straight, and the cut end surface Wa thereof is a surface substantially perpendicular to the axis of the conductor W. Therefore, when the resin tube 17 is to be put on the end of the conductor W, the conductor W can be easily inserted into the resin tube 17, and the end of the conductor W becomes a surface substantially perpendicular to the axis. Therefore, the work can be performed safely without being pierced by the operator's hand or the like. Further, even when the end of the conductor W is connected to a connector or the like (not shown), the end of the conductor W extends straight, so that the action can be facilitated.

FIG. 14 shows another embodiment of the clamp / cutter device according to the present invention. The same parts as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted. Further, FIG. 14 shows a state in which the slide block 106 has been moved to the second position.
In this clamp / cutter device 100a, the cutting blade 112 is in sliding contact with one side surface 131 of the hook 125 to cut the conducting wire W. As a result, the ends of the conductors that are released without being clamped are released in a straight line because they are not originally bent. On the other hand, the end portion of the conducting wire W clamped between the side surface 131 and the pressing block 132 is in a bent state along the corner portion of the hook 125. Then, it is pressed and sandwiched by the other side surface 131 by the pressing plate 118.

Therefore, when the next winding is completed, the slide block 106 is moved to the third position, the clamp is released, the clamp / cutter device 100a is retracted, and the end portion of the conductor W is pulled out, the conductor W The end of the is straightened by the presser plate 118 to form a straight line.

100 Clamp and cutter device 101 Main body 102 Flange 103 Air cylinder 104 Bolt 105 Storage part 106 Slide block 107 Opening 108 Notch part 109 Fitting groove 110 Clamper 111 Insertion hole 112 Cutting blade 113 Mounting groove 114 Screw hole 115 Hole 116 Bolt 117 steps Part 118 Holding plate 119 Hole 120 Screw 121 Screw hole 122 Guide surface 123 Holding part 124 Lead wire pulling member 125 Hook 126 Base end 127 Screw hole 128 Hooking surface 129 Insertion groove 130 Holding groove 131 Side 132 Pressing block 133 Support shaft 134 Spring 135 Spring pin 136 Cylinder rod 137 Bearing plate 138 Bearing plate

Claims (4)

The main body, which is movably supported by the drive device,
A conductor pulling member whose base end is fixed to the main body and extends from the main body to form a hook for hooking a conductor to the tip.
A slide block that is supported by the main body and moves forward and backward with respect to the main body.
It is held so as to be retractable with respect to the slide block by a predetermined distance, is always urged in the protruding direction by a spring, and when the slide block moves in the direction of the hook, the conducting wire is elastically connected to the hook. Clamper to clamp and
The base end side is fixed to the slide block and supported so as to protrude from the slide block, and when the slide block moves in the direction of the hook and the conductor is clamped by the clamper, the hook is attached to the hook. A cutting blade that slides and cuts the conducting wire hooked on the hook,
The base end side is fixed to the slide block and supported so as to extend from the slide block, and when the slide block moves in the direction of the hook, it is clamped by at least the clamper on the side surface of the hook. It is provided with a holding plate that is pressed against the side surface through which the conducting wire passes and holds the conducting wire hooked on the hook with the side surface.
The slide block has a first position where the cutting blade, the clamper, and the holding plate are separated from the hook so that a conductor can be introduced between the hook and the clamper, and the conductor is clamped by the clamper. The second position where the conducting wire is cut by the cutting blade and the conducting wire is sandwiched by the holding plate, and the third position where the clamping of the conducting wire by the clamper is released but the holding of the conducting wire by the holding plate is not released. A conductor clamp and cutter device that is at least movable between. An insertion groove for the cutting blade is formed on the surface on which the conductor of the hook is hooked, and the cutting blade is configured to be slidably contacted with the inner side wall of the insertion groove to cut the conductor. The conductor clamp / cutter device according to claim 1. The clamp / cutter device for a conducting wire according to claim 2, wherein the holding plates are provided in pairs so as to abut on both side surfaces of the hook through which the conducting wire passes when the conducting wire is hooked on the hook. The clamp / cutter device for a conductor according to any one of claims 1 to 3, wherein the hook is formed with one or a plurality of holding grooves into which the conductor enters when the conductor is hooked.

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