JPH0455067A - Spot welding device - Google Patents

Abstract

PURPOSE:To automatically execute all of the welding operations of both long and short wires by receiving the short wires set by a setting device, disposing the long wires so as to intersect its wires with the short wires and moving the wires back and forth at prescribed strokes. CONSTITUTION:All the operations from supplying of the short materials 5 and setting thereof to the prescribed positions and extruding of the set short materials 9 to welding of the long and short materials 8, 9 and further to drawing out after welding are automatically executed. Then, operator's labor is drastically decreased and in addition, the products having stable quality are mass produced. The production is thus improved and all the desired requirements are satisfied.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a spot welding device for connecting members used in connecting fittings for architectural wall materials.

(Prior art) Various construction methods are adopted in construction methods, but in some construction methods, a short wire rod 9 (hereinafter referred to as short wire rod) is inserted between two long wire rods 8 (hereinafter referred to as long wire rods). A long connecting fitting 10, which is welded into a ladder shape, is cut into a predetermined length and used to connect wall materials.

Conventionally, in order to manufacture the above-mentioned long connecting material 10, a ladder-like jig of a predetermined length is made, two long members 8 are placed on this jig, and then a predetermined portion is placed at a predetermined position on the jig. The short materials 9 were supplied by hand at intervals, and the jig was held by hand and moved between the electrodes of the spot welding machine, so that the supplied short materials 9 were sequentially spot-welded to the long materials 8.

(Problem to be solved by the invention) As mentioned above, in the past, not only did all the work be done by hand, requiring a dedicated worker, but the same work was performed continuously, which caused a lot of worker fatigue. (This is a big problem in the current situation where there is a shortage of workers, and we have to settle for low productivity.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the present invention provides a welding device for welding short wires to long wires in a crosswise manner at predetermined intervals, and a hopper for storing short wires. a short wire setting device that reciprocates with a predetermined stroke and sets a predetermined number of short wires supplied from the hopper in a predetermined position; a spot welding table on which the long wire is arranged to intersect with the short wire, which receives the short wire set by the setting device, and the short wire set in the setting device;
A delivery device that sends out the device toward a predetermined position on the spot welding table is arranged on the spot welding table. The present invention employs a configuration consisting of a spot for welding both a long wire rod and a short wire rod, and a push-up device that pushes up the long wire rod from the welding table after the spot welding table has moved forward.

(Function) By adopting the above configuration, the present invention automatically supplies short materials, sets them in predetermined positions, pushes out the set short materials, welds both long and short wire materials, and even pulls out the wires after welding. It will be held in

(Example) Hereinafter, the present invention will be explained in detail with reference to the drawings showing examples.

In the figure, l is a hopper, which is fixedly attached to a predetermined position by a mounting bracket 11. A large number of short materials 9 are stored in the hopper 1, and the lower side of the front end portion is opened to form a supply port 12 for the short materials 9. This supply port 12 is in contact with a setting device 2, which will be described in detail later. It is closed. The bottom plate 1a on the rear side of the supply port 12 is appropriately inclined so that the stored short material 9 flows down toward the supply port 12.

In the hopper 1, the weight 13 is rotatably locked onto the hopper la by a gate, and a moderate load movement is applied to the weight 13a to prevent excess short materials 9 from flowing down to the supply port 12. When the short material inside becomes insufficient, it is opened and the short material 9 is supplied.

Note that the configuration of the hopper 1 is not limited to this, and any configuration that can supply the stored short materials 9 to the setting device 2 described later at a predetermined rate is sufficient.

The setting device 2 is roughly divided into a rail mount 15 provided on a base 14, a movable mount 17 that fits into the rail mount 15 and moves reciprocally (back and forth) by a cylinder 16, and a movable mount 17 that
and a set plate 18 attached so that approximately half of the right side (upper side in the drawing) in the forward direction protrudes.

The rail mount 15 is firmly attached to the base 14 by appropriate attachment means, and a pair of rails 1 are provided on both end surfaces of both side walls.
A fitting member 20 attached to the lower surface of the movable frame 17 is slidably dovetail-fitted to the rail 19, and a rod 16a of the cylinder 16 attached to the front end surface of the rail frame 15 is fixed to the rail 19.
is connected to a bracket 17a provided on the movable frame 17.

Therefore, when the cylinder 16 operates, the movable frame 17 is guided by the rails 19 and moves back and forth (forward and backward) with a predetermined stroke.
It is designed to do this.

As described above, the set plate 18 is arranged so that its approximately right half in the forward direction protrudes from the movable frame 17.
The setting groove 21 of the short material 9 is attached to the top and has a predetermined interval so as to cross the setting plate 18 from its front end.
is recessed.

The width of this set groove 21 is slightly thicker than the diameter of the short material 9 (
In addition, the depth is approximately equal to or slightly deeper than the diameter of the short material 9 so that two short materials 9 can fit into one groove. is not allowed.

As described above, on this set plate 18, the short material 9 is stored with the supply port 12 of the hopper 1 in contact with it lightly to the extent that it does not interfere with the reciprocating movement of the set plate 18, and the supply port 12 is closed. It is ensured that no leakage occurs.

The spot welding table 3 is provided on a base 14 adjacent to and parallel to the setting device 2, and has the following configuration.

Reference numeral 22 shown in FIGS. 1 and 4 is a rail plate fixed to the base 14, and a fitting part 24 provided on the lower surface of the movable plate 23 is fitted into this rail plate 22. A rod 25a of a cylinder 25 attached to the base 14 is connected to the mounting member 23a (Fig. 4), and when the cylinder 25 is operated, the movable plate 23 is guided by the rail plate 22 and reciprocates with a predetermined stroke. (move forward and backward).

A welding table 26 made of an insulator is elastically supported on the movable plate 23 by a spring 27.
has the following configuration. The welding table 26 has a central part protruding from the front end and both left and right sides to form a set part 26a. A set groove 28 is bored. The width of this set groove 28 is the same as that of the set groove 21, and its depth is such that the bottom of the groove is slightly lower than the bottom of the set groove 21,
The overall depth is set so that only the sum of the diameters of the short material 9 and the diameter of the long material 8 and the gap are slightly deeper. Furthermore, the end surface of the protruding portion of the set plate 18 described above overlaps the left side surface of the set portion 26a in the direction of travel.

Furthermore, two set grooves 30 for setting the long material 8 are recessed in the set part 26a so as to be perpendicular to the set groove 28 and to traverse the set part 26a.
The width and depth of the long material 8 are set to be approximately equal to or slightly larger than the diameter of the long material 8. As is clear from the above description, the groove bottom of the set groove 30 is located above the groove bottom of the set groove 28 described above.

Next, 32 is a welding hole that is located at the intersection of the set grooves 28 and 30 and is bored through the welding table 26. A spot welding machine 5, which will be described later, faces this welding hole 32, and This is an opening for welding the short material 9 and the short material 9 together.

A delivery device 4 having the following configuration is attached to the movable frame 17 of the setting device 2. Reference numeral 33 denotes a guide member mounted on the movable frame, and the push-out arm 3 is attached to this guide member 33.
4 is slidably mounted. A push-out plate 35a having a push-out protrusion 35 protruding from the lower surface of the bracket 34a attached to the front end of the push-out arm 34 is fitted into the set groove 21 recessed in the set plate 18. There is.

Further, a rod 37a of a cylinder 37 attached to the movable frame 17 is attached to the bracket 34a, and the push-out arm 34 reciprocates due to the operation of the cylinder 37, and the forward end thereof is attached to the rear end of the push-out arm 34. The attached stopper piece 38 hits the stopper 39 provided on the movable frame 17 and is regulated, and the stopper piece 38 at the return end is regulated by the limit switch 4 attached to the movable frame 17 via the bracket 40a.
0 and is regulated.

The spot welding machine 5 is a conventionally well-known welding machine, and is
One side of the electrode 41 corresponds to the welding hole 32 drilled in the set portion 26a of No. 6 and is provided directly above the welding hole 32, and the other electrode 41 is provided below the welding table 26 to form a pair with this electrode 41 (not shown). As in the conventional case, the upper electrode 41 is lowered and raised by an appropriate drive device (not shown).

The push-up devices 7 are attached to both the front and rear sides of the base 14, and push up the long material 8 to which the short material is welded so that it enters the set groove 28. A cylinder 43 attached to the base 14 via a bracket 42, which is a device for pushing out the short material 9 from the set groove 28.
A push-up plate 44 is attached to the rod 43a.

Next, the operation of the embodiment of the present invention configured as described above will be explained in detail below.

In FIG. 1, the movable frame 17 of the setting device 2 is at the backward end, and the part of the setting plate 18 in which the setting groove 21 is recessed is in contact with the opening part of the supply port 12 of the hopper 1, and the extrusion arm 34 is in contact with the opening part of the supply port 12 of the hopper 1. The bracket 34a faces the side wall of the hopper 1 at a small distance, and also faces the set part 26a of the welding table 26.
A long material 8 pulled out from a reel (not shown) is set in the set groove 30 recessed in the groove 30 so that the long material 8 is supported by the support base 31 at the front and back, and this state is the function of the present embodiment. This will be the starting position.

Next, the cylinder 16 is actuated and the movable frame 17 starts to move toward the forward end. Along with this movement, the short material 9 is supplied to the setting groove 21 of the setting plate 18 in a state of natural falling. Since the width and depth of 21 are set as described above, only one piece of short material 9 is reliably supplied to the set groove 21 of - book, and two pieces of short material 9 are supplied to set groove 21 of book - book. A double charge in which the short material 9 is fed never occurs.

The movement of the movable frame 17 is as shown in FIG.
When the set groove 21 of No. 8 and the set groove 28 of the welding table 26 reach the forward end where they align in a straight line, each set groove 21 stops.
A short material 9 is supplied to. The operation of all operating parts in this embodiment is confirmed by position confirmation means such as stopper limit switches, but this confirmation work and control of the order of operation are appropriately selected from conventional means. Since this is a matter of fact, the details will be omitted except for a few.

When the movable frame 17, that is, the set plate 18 reaches its most forward end and the set grooves 21 and 28 align in a straight line, the cylinder 37 of the delivery device 4 is actuated and the push-out arm 34 moves forward. Due to this advancement, the extrusion plate 3 is fitted into the set groove 21.
The extrusion protrusion 35 of 5a pushes out the short material 9 set in the set groove 21 toward the set groove 28 of the set part 26a (Fig. 3), and the extrusion arm 34 stops when the stopper piece 38 hits the stopper 39. Short material 9 extruded
is positioned by hitting the stopper 29, and then the push-out arm 34 moves back and stops until the stopper piece 38 presses the limit switch 40, and then the setting device 2 returns to the state shown in FIG.

A set groove 30 recessed in the set portion 26a of the welding table 26
As described above, the long material 8 is set in the set groove 30 and the set groove 28 are set in the positional relationship and dimensions described above, so the short material 9 pushed out from the set groove 21 is , when the short material 9 is set in the set groove 28 below the long material 8 and perpendicular thereto, and is detected by an appropriate detection means such as a proximity switch (not shown), and the short material 9 is not supplied into all the setting grooves 28. is controlled to prevent the following operations from being performed:

As described above, the short material 9 is attached to the set portion 26a of the welding table 26.
Once set, the spot welding machine 5 is activated,
The electrode 41 located on the upper side descends and pushes both wire rods 8 and 9 that intersect at the welding opening 32, and while pushing down the welding table 26 against the spring 27, the electrode 41 located on the lower side (not shown) is pushed down. Press the long and short materials 8 and 9 together and spot weld them 1.
The short material 9 is welded to the two long materials 8 at a predetermined interval in a ladder shape, and the upper electrode rises and returns to its original position.

After welding is completed as described above, the cylinder 25 (
4) operates and moves the welding table 26 forward by one pitch, the long material 8 is welded to this and is pulled by the short material 9 set in the set groove 28, and is pulled one pitch (then the short material 9 (Fig. 5). When the long material 8 is pulled out by one pitch in this manner, the cylinder 43 of the push-up device 7 is operated and the rod 43a protrudes.
Push up the long material 8 to a predetermined height on both the front and back sides of the set groove 28.30, push out the long material 8 set in the set groove 28.30 and the short material 9 welded to it from the set groove 28.30, and free it. state.

When the pushing up device 7 performs pushing up as described above,
The cylinder 25 operates in the opposite direction to the above to return the welding table 26 (FIG. 6), and then the cylinder 43 also operates in the opposite direction to return the long material 8 that has been pushed up to its original position. The long material 8 pulled out by the pitch is set in a set groove 30 recessed in the set part 26a of the welding table 26,
Next, we wait for the short material 9 to be pushed out, and spot welding is then performed in the same manner as above.

In the above-mentioned embodiment, all movable parts are operated by cylinders, but the implementation of the present application is not limited to this, and the movable parts may be operated by racks and pinions, etc., etc., within the scope of the technical idea of the present application. It may be changed as appropriate.

(Effects of the Invention) As detailed above, the present invention not only allows all operations to be performed automatically, greatly reducing the labor of the worker, but also enables mass production of products with stable quality. This is a useful invention that improves production and satisfies all desired requirements.

[Brief explanation of drawings]

The drawings show one example of the implementation of the present application. Fig. 1 is an overall perspective view with all movable parts in a standby state, Fig. 2 is a perspective view showing the setting device in an advanced state, and Fig. 3 is a short wire rod being pushed out. FIG. 4 is a partial perspective view showing the rear side of the welding table; FIG. 5 is a perspective view showing the welding table in a forward state;
FIG. 6 is a perspective view showing a state in which both the long and short wires are pushed up and the welding table is returned to its original state. l...Hopper, 2...Set device, 3...Spot welding table, 4...Delivery device, 7...Pushing device, 8
...Long wire, 9...Short wire.

Claims (1)

[Claims] 1. In a welding device that cross-welds short wire rods (9) to a long wire rod (8) at predetermined intervals, a hopper (1) for storing the short wire rods (9) and a predetermined The hopper (1) is reciprocated with a stroke of
a setting device (2) for short wire rods (9) that sets a predetermined number of short wire rods (9) supplied from a spot welding table (3) on which the long wire (8) is arranged to intersect with the short wire (9), which receives the short wire (9) set by the setting device (2); , a sending device (4) that sends out the short wire rod (9) set in the setting device (2) toward a predetermined position on the spot welding table (3); a spot welding machine (5) that welds both the long wire rod (8) and the short wire rod (9); and after the forward movement of the spot welding table (3), the long wire rod (8) is welded.
and a push-up device (7) for pushing up the welding material from the welding table (26).