JP3384317B2 - Peeling suction mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peeling debris suction mechanism.

[0002]

2. Description of the Related Art Conventionally, a terminal crimping device has been adopted as a method for crimping a terminal to an end of a covered electric wire. This terminal crimping device is provided with a pair of molds for cutting the terminal from the terminal strip into a single body and crimping the terminal. By the way, since the end of the covered electric wire to which the terminal is crimped must be subjected to a peeling process in advance to expose the core wire, a terminal with a peeling mechanism in which a peeling unit is attached to the side of the mold. Crimping devices are also known.

In this structure, a pair of cutting blades for cutting the tip of the covered electric wire and a pair of peeling blades for cutting the covering portion of the covered electric wire driven at the same time as the cutting blade are set as a set, and each blade is used as a blade. Is installed on the movable table so that it opens and closes in the direction orthogonal to the covered electric wire, and an opening and closing drive unit for opening and closing each blade is provided on the movable table.
Furthermore, by carrying the opening / closing drive unit integrally with each blade through the movable table and driving each blade along the longitudinal direction of the covered electric wire at a predetermined timing, a peeling operation is performed. And a drive unit.

In this type of terminal crimping device with peeling mechanism, the movable table of the peeling unit moves back and forth between the molds with respect to the covered electric wire fed to the position where the terminals can be crimped by the mold. After the peeling operation is performed, the crimping operation is performed by the mold with the covered electric wire in the same position, and the covered electric wire exposing the core wire is connected to the terminal. In order to make the transition from the peeling operation to the terminal crimping operation smooth, both the cutting blade and the peeling blade were laid out at positions close to the mold.

[0005]

DISCLOSURE OF THE INVENTION In order to perform continuous terminal crimping operation in the above-described peeling scrap suction mechanism, chip scraps of the coated electric wire cut by the cutting blade of the peeling unit and peeling of the peeled wire are required. It is necessary to smoothly feed the coated electric wire after being peeled off to the mold in a state in which the cutting chips (generally referred to as "peeling chips" in this specification) cut by the blade are not scattered. However, since both the cutting blade and the peeling blade are configured to move back and forth between the molds for crimping the terminals, the peeling scraps are likely to scatter to the mold, resulting in defective crimping.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a peeling debris suction mechanism capable of surely processing the peeling debris from the peeling unit.

[0007]

In order to solve the above-mentioned problems, the present invention provides a pair of metal molds for a terminal for crimping a terminal to a covered electric wire by a blade for skinning the tip of the covered electric wire. Scrap removal suction used for terminal crimping device with terminal stripping unit attached so that it can move back and forth between an entry position that enters in between and a retract position that allows the crimping operation by the die to retract outside In the mechanism, the suction waste receiver, which is disposed below the blade in the retracted position and receives the skin scraps generated by the blade performing the skin-moving operation with the negative pressure air, and the scrap receiver. A cover part provided on the upper part and displaceable between a cover posture that covers between the scrap receiver and the blade in the retracted position and an allowable position that allows the blade to move between the retracted position and the entry position. In the stroke in which the blade is displaced between the entry position and the retracted position, the cover member is displaced to the cover position when the blade is in the retracted position, and the cover member is displaced to the allowable position in the remaining stroke. And a link mechanism for linking the cover member and the blade so as to be capable of interlocking with each other.

In the invention including this specific matter, since the cover member is interlocked with the displacement of the blade and is displaced to the cover position when the cover member is moved to the retracted position where the peeling dust is most likely to scatter, the peeling dust is removed by the cover member. It is surely stored in the waste container with the scattering prevented. here,
The blade may be either a cutting blade that cuts the tip of the covered electric wire or a stripping blade, or both. In many cases it is preferred that the blades are cutting blades and skinning blades. In that case, it becomes possible to efficiently suck all the waste generated by the both from the waste receiver.

[0009] In a preferred embodiment, the peeling unit is attached to the electric wire positioning member for positioning the covered electric wire by abutting against the tip of the covered electric wire when in the entrance position, and the peeling debris is inserted into the electric wire positioning member. From the retracted position so as to be conveyed, and further provided with a peeled scrap feeding means for dropping the peeled scrap held in the retracted position into the suction scrap receiver.

In the invention including this specific matter, the peeling scraps feeding means surely feeds the peeling scraps (particularly, the chip scraps cut by the cutting blade) into the suction scrap receiver, so that the peeling scraps are peeled off. Immediately after the operation, peeling chips will not be scattered to the mold. In a further preferred aspect, the electric wire positioning member further includes a suppressing plate that suppresses scattering of peeling debris from the outer peripheral portion of the positioning member.

In the invention including this specific matter, since the stripping debris of the covered electric wire is suppressed from scattering to the outer peripheral side of the electric wire positioning member, the stripping debris can be more reliably fed into the stripping debris feeding means. Easy to be accommodated.

[0012]

DETAILED DESCRIPTION OF THE INVENTION Referring to the accompanying drawings,
A preferred embodiment of the present invention will be described in detail. FIG. 1 is a perspective view showing a schematic configuration of a terminal crimping device 1 with a peeling unit that employs a peeling debris suction mechanism 30 according to an embodiment of the present invention, and FIG. It is a perspective view which expands and shows a part.

First, referring to FIG. 1, a terminal crimping device 1 with a peeling unit is shown in FIG.
Fixed side unit 3 to be attached to 2 and the above base
2 has a pressing mechanism 4 installed upright, and an anvil 3a attached to the fixed side unit 3 and a crimper 4a attached to the pressing mechanism 4 form a pair to crimp the terminal T. Make up the mold. Then, the press mechanism 4 is configured to crimp the terminal T fed between the two molds (the anvil 3a and the crimper 4a) by moving the crimper 4a up and down by the well-known control unit U.

In order to feed the terminals T, a terminal strip feeding mechanism 5 is provided on a side portion of the pressing mechanism 4, and the terminal strip feeding mechanism 5 is linked by a link mechanism 6 to form a pressing mechanism. By interlocking with the lifting and lowering operation of the crimper 4a by 4, the terminal T portions provided in the terminal strip B can be intermittently fed one by one between the molds. The terminal crimping device 1 of FIG. 1 is of a semi-automatic type, and an operator drives the pressing mechanism 4 by a foot switch (not shown).

A stripping unit 10 is attached to the base 2 in order to strip the end of the covered electric wire W on which the terminal T is to be crimped in cooperation with such a terminal crimping mechanism. There is. Referring also to FIG. 2, the peeling unit 10 includes a mounting base 11 extending along the longitudinal direction of the covered electric wire W to be positioned in the mold, and a reciprocating movement with respect to the mounting base 11 along the longitudinal direction. The movable table 12 is movable and the cutter unit 13 carried on the movable table 12 is provided. As shown in FIG. 2, a pair of arms 14 are mounted on the cutter unit 13 so as to be displaceable in the width direction of the movable table 12. A pair of cutting blades 15 and a pair of peeling blades 16
Are attached with screws 17 and are symmetrical about the axis of the covered electric wire W. When the arms 14 approach each other in the width direction, the cutting blade 15 between them cuts the tip of the covered electric wire W, while the peeling blade 16 cuts the covered portion W1 of the covered electric wire W, As will be described later, the movable table 12 is displaced toward the tip end side of the covered electric wire W, so that the cut-off covered portion W1 can be extracted from the covered electric wire W to perform a peeling operation.

In order to perform the above-mentioned skin removing operation, an air cylinder 18 along the longitudinal direction of the movable table 12, the air cylinder 18, and the arms 14 are provided on the movable table 12.
A link mechanism 19 for converting the movement in the longitudinal direction by the air cylinder 18 into the movement in the width direction and transmitting the movement is provided by connecting and. Therefore, when the air cylinder 18 drives the link mechanism 19, the driving force is converted and transmitted to the arm 14, and the arm 14 is displaced symmetrically in the width direction to cut and cut the covered wire W. Is possible. Furthermore, the mounting base 11
An air cylinder 20 for reciprocally moving the movable table 12 along the longitudinal direction is attached to the anvil 3 by the air cylinder 20.
The movable table 12 is moved between an entry position (home position) that is inserted between a and the crimper 4a and a retracted position that allows the pressurizing operation by the crimper 4a by retracting between the molds 3a and 4a. It can be moved back and forth.

The operation timings of the air cylinders 18 and 20 are configured to be interlocked with the press mechanism 4 by the control unit U. Therefore, the worker is
Is disposed between the anvil 3a and the crimper 4a, and a foot switch (not shown) is operated to drive the press mechanism 4, so that the air cylinder 18 first causes the double-edged blade 1 to move.
5 and 16 cut the covered electric wire W, and then the movable table 12 is moved forward from the home position to the retracted position by the air cylinder 20 to perform a peeling operation, and then the press mechanism 4 lowers the crimper 4a. As a result, the terminal T is crimped to the end of the stripped covered electric wire W.

Here, as described above, the terminal crimping device 1 according to the illustrated embodiment is a semi-automatic type in which the operator manually feeds the covered electric wire W, and therefore the covered electric wire W A wire stopper 21 is provided on the peeling unit 10 to facilitate positioning. FIG. 3 shows a schematic plan view of a cutter unit including a wire core contacting member, and (A) and (B) are configurations according to the embodiment of FIG.
(C) shows a conventional configuration.

First, referring to FIGS. 3 (A) to 3 (C), the electric wire stopper 21 is connected to the shaft-shaped base portion 22 fixed to the movable table 12 and the base portion 22 so as to be relatively displaceable in the longitudinal direction. And elastically molds 3a, 4a by a spring (not shown).
And an abutting portion 23 that is biased toward
A flange portion 24 is integrally formed at the tip of the abutting portion 23. Then, the worker positions the covered electric wire W by abutting the fed covered electric wire W against the end surface 24a of the flange portion 24. Although not specifically shown, the wire stopper 21 is mechanically linked to the cutter unit 13, and each blade 15,
At the moment when 16 is closed and opened, it is slightly retracted (see FIG. 3 (B)).

By the way, as shown in FIG. 3 (C), in the conventional electric wire stopper 21, the flange end face 2 is exclusively used.
Since 4a is finished to be flat, there is a problem that the peeling scraps D (particularly, chip scraps by the cutting blade 15) fall toward the anvil 3a when the peeling operation is performed. Therefore, in the illustrated embodiment, a bottomed recess 24b is provided on the flange end surface 24a, and the recess 2
The chip waste D is held in 4a. Therefore, in the illustrated embodiment, each blade 15, 16 is
As shown in (A), at the stage of performing the peeling operation and closing, the peeling debris D held in the recess 24b is prevented from falling, and after the cutter unit 13 returns to the retracted position. , The electric wire stopper 21 is retracted immediately before the blades 15 and 16 are opened (or the blades 15 and 16 are opened after the blades 15 and 16 are opened), whereby the peeling debris D is dropped downward, and the skin described below is removed. The peeling dust suction mechanism 30 can suck the dust.

Further, in order to prevent the shavings D from scattering, an annular restraining plate 2 is provided behind the flange 24.
5 are arranged. Next, the peeling debris suction mechanism 30 will be described in detail with reference to FIGS. 2, 4 and 5. 4 and 5 are schematic side views showing the operation of the peeling debris suction mechanism 30 according to the embodiment of FIG. 1. FIG. 4 shows a state in which the cutter unit 13 is in the entry position, and FIG. Each state is shown in the retracted position.

With reference to these drawings, in the peeling debris suction mechanism 30 according to the illustrated embodiment, a substantially box-shaped debris receiver 31 is provided.
have. The scrap receiver 31 is a duct member made of metal, and is capable of sucking the scraps D with a vacuum device (not shown) via the flexible tube 30a (see FIG. 1). Then, in the illustrated embodiment, the scrap receiver 31 is located below the path along which the movable table 12 is displaced, and each blade 15 is in the retracted position.
The movable table 12 is arranged at a position directly below 16 as long as it does not interfere with the movable table 12.
It opens upward in the state of being close to.

A pair of shutters 32 and 33 are attached to the opening of the waste receiver 31 by shafts 34 and 35 so as to be rotatable around a horizontal axis. Each shutter 32, 3
Reference numeral 3 constitutes a cover member in the illustrated embodiment, and each is made of a thin plate-shaped metal member. Shafts 34, 3 supporting each shutter 32, 33
Each of 5 is rotatably supported in a substantially vane plate shape by penetrating a portion near the upper end of the side wall of the scrap receiver 31. As a result, the shutters 32 and 33 are tilted substantially horizontally as shown in FIG. 4 to allow the movable unit 12 to reciprocate, and the shutters 32 and 33 stand substantially vertically as shown in FIG. It is displaceable between a cover position that substantially covers the space between the scraps 15, 16 and the scrap receiver 31. Then, one end side of each of the shafts 34 and 35 (the side facing the terminal crimping device 1) projects somewhat longer.

Projecting portions 34a, 35a of the shafts 34, 35
A ring-shaped mounting member 36, 37 disposed in proximity to the outer wall of the waste receiver 31 is fixed to the shutter 3, and the corresponding shutter 3 in the direction of one chord of the mounting member 36, 37.
Link rods 38, 39 extending parallel to the edge lines of 2, 33
Are almost cantilevered. Here, each shutter 3
Of the rods 2 and 33, the rod 3 corresponding to the shutter 32 on the side of the molds 3a and 4a (hereinafter, this side is tentatively referred to as the front side).
8, one end 38a extends upward along the ridgeline of the shutter 32 at the cover position, and the other end 38b penetrates through the mounting member 36 and projects downward. A stopper 40 that locks the other end 38b of the other end 38b so as to restrict the counterclockwise rotation of the other end 38b in FIG. 4 and FIG. A tension coil spring 41 for urging the other end portion 38b in the counterclockwise direction is provided.

On the other hand, one end 39a of the rod 39 corresponding to the shutter 33 located rearward is inclined slightly rearward and protrudes upward from the shutter 33 in the cover position, and the other end is corresponding. Embedded in the mounting member 37. Furthermore, the mounting member 3
7, the link rod 42 is attached in a cantilevered manner,
The tip portion 42a projects downward in the allowable position shown in FIG. And this link rod 4
2 by the tension coil spring 43.
At, the bias is applied in the counterclockwise direction.

Next, a link lever 45 is arranged on the outer side of the waste receiver 31 substantially along the front and rear sides, and the shafts 34, 3 are provided slightly rearward of the substantially central portion in the longitudinal direction thereof.
5 is provided with a fulcrum shaft 46, and the link lever 45 is swingably attached around the fulcrum shaft 46.
The end portions 45a and 45b of the link lever 45 have respective shutters 32 and 3 at a predetermined timing, as described below.
By engaging with the link rods 38 and 42 of No. 3, the shutters 32 and 33 can be interlocked.

Next, with reference to FIGS. 4 and 5, the operation of the main part according to the above-described embodiment will be described. In the above configuration, the cutter unit 13 starts the peeling operation from the entry position (home position), reaches the retracted position, ends the peeling operation, and repeats the operation of returning to the entry position. Unit 1
In the state of FIG. 5 in which 3 is retracted to the retracted position for the peeling operation, each of the shutters 32 and 33 is in the free state, and the tension coil springs 41 and 43 are also in the free state.
By receiving the urging force of (1), the cover rotates by turning clockwise in the figure within a range in which the rotation is allowed. In this state, the front shutter 38 faces the front end surface of the cutter unit 13 (arm 14) at a position close to it, and the rear shutter 39 faces the lower surface of the arm 14 with its upper edge close, Each blade 15, 1
The lower part of 6 is covered approximately in the front and back, and the shavings D are prevented from scattering so as to surely drop into the waste receiver 31.

Therefore, in cooperation with the recess 24b and the restraining plate 25 described with reference to FIG. 3, the peeling debris D surely falls into the debris receiver 31 and is sucked through the flexible tube 30a. . Next, when the cutter unit 13 returns from the retracted position to the original home position, that is, the approach position, first, the arm 14 pushes the front shutter 32, so that the shutter 32 resists the urging force of the tension coil spring 41. Then, the cutter unit 13 rotates in the clockwise direction, and the forward movement of the cutter unit 13 is permitted. By this rotation, the link rod 38 corresponding to the shutter 32 also integrally rotates and floats above the front end portion 45a of the link lever 45.

Next, slightly behind this operation timing, the front end surface of the movable table 12 abuts on one end 39a of the link rod 39 corresponding to the rear shutter 33, so that the shutter 33 also moves the link rod 39. It is driven through and rotates clockwise. As a result, the link rod 42 of the shutter 33 rotates, pushing the rear end portion 42b of the link lever 45 downward. As a result, the link lever 45 rotates counterclockwise and its front end portion 45a
As a result of locking the other end 38b of the link rod of the shutter 32, it is possible to maintain the allowable position of the front shutter 32 even after the engagement between the arm 14 and the front shutter 32 is disengaged.

As described above, in the above-described embodiment, the shutters 32 and 33 are interlocked with the displacements of the blades 15 and 16, and are displaced to the cover position when they are displaced to the retracted position where the debris D is most likely to scatter. Therefore, the debris D is reliably accommodated in the debris receiver 31 in a state where the shutters 32 and 33 prevent the debris D from scattering. here,
The blades 15 and 16 may be either the cutting blades 15 and 16 or the peeling blades 15 and 16 that cut the tip portion of the covered electric wire, or both of them. Preferably,
As in the above-described embodiment, the blades 15 and 16 are the cutting blades 1.
5 and 16 and peeling blades 15 and 16. In that case, it becomes possible to efficiently suck the scraps D respectively generated by the both from the scrap receiver 31.

Further, in the above-described embodiment, the electric wire stopper 21 as the electric wire positioning member is provided with the concave portion 24a as the peeling scrap feeding means, and the peeling scrap D is held so that it can be conveyed from the entry position to the retracted position. In addition, since the peeling debris D held in the retracted position is dropped into the suction debris receiver 31, it is possible to prevent the peeling debris D from scattering more reliably, and the peeling operation is possible. Immediately after, the peeling dust D does not scatter toward the mold.

Further, in the embodiment described above, the suppressing plate 2
5, the stripping waste D of the covered electric wire W causes the electric wire stopper 2
Since it is suppressed from scattering to the outer peripheral side of 1, the peeling dust D can be more reliably stored in the peeling dust D feeding means. Therefore, in the above-described embodiment, the remarkable effect that the peeling dust D from the peeling unit 10 can be surely processed is exhibited.

The above-described embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment. It goes without saying that various design changes can be made within the scope of the claims of the present invention.

[0034]

As described above, according to the present invention, the remarkable effect that the debris from the dehulling unit can be surely treated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a terminal crimping device with a peeling unit that employs a peeling debris suction mechanism according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a main part according to the embodiment of FIG.

3A and 3B are schematic plan views of a cutter unit including a wire core contacting member, in which FIGS. 3A and 3B show the configuration according to the embodiment of FIG. 1 and FIG.

4 is a schematic side view showing the operation of the peeling debris suction mechanism according to the embodiment of FIG. 1 when the peeling unit is in the entry position.

5 is a schematic side view showing the operation of the peeling debris suction mechanism according to the embodiment of FIG. 1 when the peeling unit is in the retracted position.

[Explanation of symbols]

1 Terminal crimping device with stripping unit 3a anvil (mold) 4a crimper (mold) 10 Peeling unit 30 Scrap removal mechanism 31 Scrap receiver 32 Shutter (cover member) 33 Shutter (cover member)

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Claims (3)

(57) [Claims] 1. A blade for stripping the tip end of a covered electric wire is retracted to an entry position where it enters between a pair of molds for crimping a terminal to the covered electric wire and to the outside of the mold. A peeling debris suction mechanism used for a terminal crimping device with a peeling unit, which is attached so as to be able to move back and forth between a retracted position that allows crimping operation by a mold, and is arranged below the blade in the retracted position. The suction scrap receiver for receiving the peeling scraps generated by the blade performing the peeling operation with the negative pressure air, and the scrap receiver provided on the scrap receiver and the blade in the retracted position. A cover member that is displaceable between a cover posture that covers the space and an allowable position that allows the blade to move between the retracted position and the retracted position; In the step of displacement, when there is the blade in the retracted position,
A stripping mechanism, characterized in that a link mechanism is provided for linking the cover member and the blade so that the cover member is displaced to the cover position and the cover member is displaced to the allowable position in the remaining stroke. Scrap suction mechanism. 2. The stripping scrap suction mechanism according to claim 1, wherein the stripping unit is attached to the stripping unit and positions the covered electric wire by abutting against the tip of the covered electric wire when in the entry position. The peeling device further comprises a peeling chip feeding means for holding the peeling chip so that it can be conveyed from the entry position to the retracted position and dropping the peeled chip held in the retracted position into the suction chip receiver. Scrap suction mechanism. 3. The peeling debris suction mechanism according to claim 2, further comprising a restraint plate which is provided on the electric wire positioning member and which restrains the peeling debris from scattering from the outer peripheral portion of the positioning member. Scrap suction mechanism.