JPS5928128B2 - Wire guide device in coated wire cutting/coating stripping machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, a cutting blade has been provided with a set of two opposing core wire cutting blades and a set of two coating cutting/stripping blades arranged parallel to each other on both sides of the cutting blade. The core wire is cut and the coating is cut on both sides of the cutting section by the opening and closing movement of the group, and the coating on both sides of the cutting section is stripped off by the pulling action of movable clamps provided on both sides of the cutting blade group toward the side opposite to the cutting blade group. In a roller feed type coated wire cutting/stripping machine, a wire guide tube in front of the hollow cylinder is fixedly placed between the core wire cutting blade and each coating cutting/stripping blade, and the wire is transferred to the cutting blade group. They were providing guidance on how to enter.

However, with this method, traces of the coating remain in the wire guide tube after the sheath stripping operation, so an air blowing device is required to blow off and remove this, which not only increases equipment costs, but also often leaves traces of the coating remaining in the wire guide tube. This was not necessarily desirable as a wire guide device because it could get caught in the pipe and interfere with the next work.

In view of the above-mentioned circumstances, the present invention provides a wire guide device that can be opened and closed between the core wire cutting blade and the coating cutting/stripping blade on the wire supply source side, and is closed only when the wire enters the cutting blade group. This invention provides a wire guide device for a coated wire cutting/stripping machine which guides the wire and is opened during the coating stripping operation so as not to interfere with the falling of the coating scum.

To describe the embodiment in detail, reference numeral 1 denotes a wire supply reel on which a coated wire W is wound, and the wire W from the reel 1 passes through a guide roller 2 and a group of wire drawing rollers 3, and then is fed into a set of two wire rods. Continuous rotation of the feed roller 4 feeds the material in the direction of the arrow.

Reference numerals 5 and 5' denote wire guide tubes disposed on both sides of the feed roller 4, which guide the feed roller 4 in synchronization with the coating stripping operation to be described later.
It is as if they move together as one.

Reference numeral 6 denotes a set of two opposing core wire cutting blades 7 and a set of two coated cutting and stripping blades 8 arranged parallel to each other on both sides of the cutting blades.
, 9, and 10° 11 is the cutting blade group 6.
A left clamp and a right clamp (the left and right are shown in FIG. 1) for gripping the wire and stripping the coating, which are a pair of two clamps arranged on both sides of the wire, are synchronously closed only when the cutting blade group 6 is closed. , the opening operation is performed separately as described below, and when the cutting blade group 6 is closed, the coating of the wire rod W between the core wire cutting blade 7 and each coating cutting/stripping blade 10, 11 is stripped off. They can move in directions away from the cutting blade group 6, respectively.

The right clamp 11 has a vertically long groove 11a on its opposite surface.
Further, a frame 11b for preventing wire adhesion is fixed in the long groove 11a so as to slightly protrude when the clamp 11 is opened, and the cut wire W' adhering to the clamp surface when the clamp 11 is opened is removed. It's like dropping a comb.

Reference numerals 12 and 13 denote left and right fixed wire guide tubes fixedly disposed between the coating cutting and stripping blades 8 and 9 and the left and right clamps 10 and 11, and 14 an opening of the cutting blade group 6. 2 are arranged oppositely between the core wire cutting blade 7 and each of the coating cutting and stripping blades 8 and 9 so as to remove the coating residue R that has adhered to the core wire cutting blade 7 or the coating cutting and stripping blades 8 and 9 during operation. This is a set of coated scum removal rods.

The upstream openings of the fixed wire guide tubes 12 and 13 are trumpet-shaped to facilitate the entry of the wire W.

Reference numeral 15 denotes a wire guide device that can be opened and closed, and is disposed between the core wire cutting blade 7 and the left sheath cutting and threading blade 8, and opens in synchronization only when the cutting blade group 6 is closed; This is done slightly before the return operation of the pressure/right clamps 10 and 11 is completed to prevent the wire W from sagging and to guide it horizontally.

The configuration of the wire guide device 15 will be described in detail with reference to FIGS. 2 and 3.

Reference numerals 16 and 17 indicate a set of two open/close arms, the lower end of which is attached to a horizontal shaft 19°20 that is pivoted to the pedestal frame 18 with a bolt 21.
, 22, and are rotatable integrally with the respective shafts, and in the closed state, the facing surface of the upper tip forms a small hole slightly larger than the diameter of the wire with a trumpet-shaped counterbore on the upstream side. Recesses 16a, 16b in the shape of half-split truncated cones,
17a.

17b was removed.

23.24 is the mount frame 18 of the horizontal axis 19.20
25 is a swing link fixed coaxially with the one gear 23; 26 is a swing link having one end connected to the swing link 25 via a pin 27 so as to be swingable; A horizontal swing link 3 is swingably connected via a pin 30 to the tip of one arm of a bell crank 29 whose other end is pivotally supported 28 on the gantry frame 18;
Reference numeral 1 designates a cam follower pivotally supported at the end of the other side arm of the bell crank 29, which engages with a cam 33 fixed to a drive transmission shaft 32 connected to an appropriate drive source (not shown), and connects the pin 30 and the gantry frame 18. The spring force of the tension spring 34, which is stretched between proper locations, is such that it is constantly pressed against the cam 33.

As shown in FIG. 2, the opening/closing arms 16 and 17 are normally in an open state with the cam follower 31 engaged with the protrusion of the cam 33, and when the cam 33 is rotated clockwise, the cam follower 31 engages with the recess of the cam 33, and the spring force of the tension spring 34 causes the bell crank 29 to move against the shaft 2.
8 as the fulcrum and rotate counterclockwise.

As the bell crank 29 turns, the horizontal swing link 27 moves toward the tension spring 34, and the swing link 25 rotates clockwise.

Accordingly, the gears 23, 24 rotate clockwise and counterclockwise, respectively, and the opening/closing arm 16, 17 completes its closing operation.

The opening operation of the opening/closing arm 16, 17 begins when the cam follower 31, which is engaged with the recess of the cam 33, moves onto the protrusion, and the operation is the reverse of the closing operation described above.

Next, the operation of the entire wire stripper including the device of the present invention will be explained with reference to FIGS. 1, 4 to 10.

The coated wire W from the wire supply reel 1 passes through a guide roller 2, a group of wire drawing rollers 3, a feed roller 4, etc., and is passed between the left clamps 10 in a desperate struggle for a predetermined length, the left fixed wire guide tube 12, The wire guide device 15 in the closed state, the cutting blade group 6 in the open state Q, the right fixed wire guide tube 13, and the open state Q
It is fed intermittently as it moves forward between the right clamps 11.

(FIGS. 1 and 4) When the feeding roller 4 stops driving, the left and right clamps 10.11 and the wire guide device 15 close and open, respectively, and at the same time, the cutting blade group 6 also closes (FIG. 5). ).

At this time, the covering and the core of the covered wire W are cut by the core wire cutting blade 7, and only the remaining wire W and the end covering of the cut wire W' are cut by the covering cutting/stripping blades 8 and 9.

In this state, the left and right clamps io and 1i each move a predetermined distance in a direction away from the cutting blade group 6 (FIG. 6).

In synchronization with the movement of the left clamp 10, the feed roller 4, wire guide tubes 5, 5', etc. move integrally.

In addition, the displacement distance of the pressure/right clamps io and 1i is larger than that of the right clamp 11, and as shown in FIG. Remains in the guide tube 12 and the right clamp 1
The cut wire W' held by the right fixed wire guide tube 13 completely leaves the right fixed wire guide tube 13 on the downstream side.

Then, the cutting blade group 6 and the right clamp 11 are opened, and the coating residue R and the cut wire W' are dropped by the coating residue removing rod 14 and the wire adhesion prevention side bar 11b (FIG. 7).

The left and right clamps 10, 11, the feed roller 4, and the wire guide tubes 5, 5', which were in the displaced position, perform a return operation, and during this, the wire guide device 15 closes, and the wire guide device 15 is moved forward. The bare wire end of the residual wire W is guided and held so that it can move straight (FIG. 8).

Then, the left clamp 10 is also opened (FIG. 9).

This completes one cycle, and the next cycle is started by restarting the feed roller 4 (FIG. 4).

In the above embodiment, the opening and closing operations of the opening and closing arms 16 and 17 are performed by a cam mechanism, but the ends of the swing link 25 may be electrically actuated by a solenoid mechanism as appropriate.

Furthermore, the opening and closing arms 16 and 17 may be opened and closed at any position within the shaded range shown in FIG. 10 without any problem.

As detailed above, the wire guide device according to the present invention closes only when the wire enters the cutting blade group to reliably guide the wire so that it can move straight, and opens after the coating is stripped. Since the coating scum is completely released, the coating scum easily falls off, and no air blowing device or the like is required, the equipment cost can be reduced without incurring any time loss.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic diagram of a coated wire cutting and coating stripping machine employing the present invention, FIG. 2 is an enlarged detailed view of the main part of the present invention, and FIG. are A-B-C in Figure 2.
-DEFGH sectional view, FIGS. 4 to 9 are action explanatory diagrams, and FIG. 10 is a time chart. In the figure, 4 is a feeding roller, 6 is a group of cutting blades, 10.1
Reference numeral 1 indicates left and right clamps, 12 and 13 indicate left and right fixed wire guide tubes, and 15 indicates a wire guide device.

Claims (1)

[Claims] 1. A cutting blade group comprising a set of two opposing core wire cutting blades and a set of two coating cutting/stripping blades arranged in parallel and opposing each other on both sides of the cutting blades. Opening/closing movement (cutting the stranded core wire and cutting the coating on both sides of the cut section, and stripping off the coating on both sides of the cut section by pulling the wire toward the side opposite to the cutting blade group of movable clamps provided separately on both sides of the cutting blade group) In a roller feed type coated wire cutting/coating stripping machine that performs
It is arranged between the core wire cutting blade and the coating cutting/stripping blade on the wire supply source side, and is opened from closed between slightly before the closing operation of the cutting blade group starts and until the closing operation is completed, and the movable clamp is opened. A wire guide device for a coated wire cutting/coating stripping machine, characterized in that the wire guide device is provided with a wire guide device that can be opened and closed from open to closed from the start of the return operation to slightly before the completion of the return operation. 2 @The wiring material guide device consists of a set of two opening/closing arms that have a special recess cut into the surface facing the tip so that the wire can be easily inserted in the closed state, and the lower part of each opening/closing arm engages with each other. Gears fixed coaxially,
a swing link whose base end is fixed coaxially with one force of the gear;
A wire guide device in a wire cutting/stripping machine according to claim 1, comprising a link for rotating the link, a cam mechanism, and the like. 3. The wire guide device includes a set of two opening/closing arms, each having a concave portion cut out on the surface facing the distal end thereof so that the wire can be easily inserted in the closed state, and a pair of opening/closing arms coaxially arranged at the lower part of each opening/closing arm so as to mesh with each other. Cutting and coating of coated wire according to claim 1, which comprises a gear fixed at zero, a swing link whose base end is fixed coaxially with the force of the gear, and a solenoid mechanism for swinging the link. Wire guide device in stripping machine.