JPS6039180Y2 - automatic welding equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic welding device for welding materials that are continuously transferred, and allows the welding direction of one welding material to be easily changed with respect to the other welding material. .

2. Description of the Related Art In the assembly of small electrical components such as relay contacts, continuous welding is performed using automatic welding equipment.

The automatic welding device receives one of the continuously transferred welding materials with a lower electrode, and welds this welding material against the other welding material, which is also continuously transferred.

FIG. 1 is a plan view showing the welding mechanism of such an automatic welding device and the arrangement in the welding material transfer direction.

the lower electrode B of the welding mechanism A is positioned by the drive part C;
, b2.

The contact material such as a relay, which is a welding material, and the contact spring E1 are transported perpendicular to the reciprocating direction of the lower electrode B and parallel to each other.

The contact material is a continuous wire rod, is transported in a straight line, and is cut by a cutting mechanism F into each contact point d of a required length.

The disconnected contact d is received on the lower electrode B at the h position, and when the lower electrode B moves to the h position, the contact d is transferred to the contact spring E1', which has been transferred to the left position, on the upper electrode (Fig. (not shown) and welded.

When assembling a pair of relay contacts facing each other using such automatic welding equipment, if the shapes of the contacts that are in contact with each other are symmetrical or the same shape as shown in Figure 3A,
Since the contacts have no directionality, both the movable contact side and the fixed contact side can be transferred and welded from the same direction using the same welding device.

However, in the case of cross contacts in which the shapes of the contacts intersect with each other, as shown in the figure, welding work was difficult.

That is, the contact d□, which is elongated in the direction perpendicular to the longitudinal direction of the contact spring E1, can be continuously welded by the welding device shown in FIG. In order to weld contacts a, d2 perpendicular to Separate welding equipment had to be used, matching the direction of transport of the weld material.

However, in FIG. 1, when the contact spring E2 is moved in the direction of the arrow a1, the contact spring E2 collides with the drive section C and obstructs the movement of the electrode.
It is necessary to separately provide a feeding mechanism for moving the contact spring E2 away from the electrode moving part, which complicates the structure and increases costs.

On the other hand, using the welding apparatus shown in FIG. 2 requires two welding apparatuses to weld one set of relay contacts, leading to increased costs due to increased equipment.

The present invention was developed to solve this problem, and it is possible to easily change the direction of transport of one welding material relative to the direction of transport of the other welding material, and to The purpose is to enable welding one welding material to another welding material in a different welding direction from that of the other welding material.

To achieve this purpose, the present invention receives and moves one welding material that is continuously transferred by a lower electrode that is reciprocated horizontally, and brings the welding material into contact with the other welding material that is continuously transferred. In a device for welding using an upper electrode, the reciprocating direction of the lower electrode is received by the lower electrode,
Moreover, it is deviated horizontally by 45 degrees with respect to the continuous transfer direction of one of the welding materials being moved.

In this way, since the feeding direction of the lower electrode is deviated by 45 degrees, the position where both welding materials are welded projects diagonally forward when viewed from the continuous transport direction of one of the welding materials, which is received and moved by the lower electrode. I will do it.

Therefore, with respect to the continuous transport direction of one welding material being moved to the welding position by the lower electrode, the transporting direction of the other welding material can be easily changed without hitting the device or interfering with the movement of the electrode. be able to.

Therefore, one welding device can be used in common to weld one welding material to the other welding material in different welding directions.

Next, an embodiment of the present invention will be described based on the drawings.

The figures show an automatic welding device according to the present invention, with FIG. 4 being a plan view and FIG. 5 being a partially sectional side view of the welding mechanism.

A support frame 3 is erected on a base 2 of the apparatus main body 1, and a driving force transmission mechanism 4 is built therein.

The transmission mechanism 4 is connected to a drive shaft 5 rotated by a drive source (not shown).

On the outside of the support frame 3, a guide 71 and rollers 72, which are a transport mechanism 7 for one of the welding materials 6 made of a linear body, are provided.

The welding material 6 transferred by the roller 72 in the direction of the arrow a2 is cut into a predetermined length by the cutting mechanism 8.

The support frame 3 holds an upper electrode 9A of the welding mechanism 9 so as to be movable up and down.

The upper electrode 9A is connected to a drive rod 92 via a pressure mechanism 91 that applies a predetermined pressure between the lower electrodes 9B.

This drive rod 92 is connected to the transmission mechanism 4 within the support frame 3, and moves the upper electrode 9A up and down by rotation of the drive shaft 5.

The lower electrode 9B paired with the upper electrode 9A is attached to a holder 11 supported by a guide mechanism 10 so as to be horizontally reciprocating.

At one end position 20A of the stroke of this holder 11, the lower electrode 9B receives the welding material 6 cut by the cutting mechanism 8 into the recess at the upper end of the electrode, and at the other end position 20B of the stroke, the lower electrode 9B receives the welding material 6 cut by the cutting mechanism 8.
send.

The moving direction a3 of the welding material 6 by the lower electrode 9B is θ horizontally with respect to the moving direction a2 of the welding material 6, as shown in FIG.
=45° deflected.

At this other stroke end position 20B, the axes of the lower electrode 9B and the upper electrode 9A are aligned, and welding is performed.

Therefore, the upper electrode 9A held by the support frame 3 is also deflected horizontally by θ=45° with respect to the transfer direction a2 of the welding material 6.

Two guide shafts 10A and 10B of the guide mechanism 10 are slidably inserted into the holder 11 to which the lower electrode 9B is attached, and the guide shafts 10A and IOB are connected to the support member 10C fixed to the base 2.・They are superimposed and held horizontally and parallelly by the IOD.

The support member 10C/IOD sets the reciprocating end of the holder 11, that is, the stroke of the lower electrode 9B.

This holder 11 is reciprocated by a drive shaft 5.

A rotating plate 12 horizontally rotated by a drive shaft 5 and a holder 11 are connected by a connecting member 13.

The connecting member 13 has one end rotatably supported on the periphery of the rotary plate 12 by a shaft 14, and the other end rotatably supported by a swinging member 16 of a damper 15 provided on the holder 11. .

Therefore, when the rotating plate 12 rotates, the holder 11 is linearly reciprocated along the guide shafts 10A and IOB by the connecting member 13.

The holder 11 is decelerated at the end of its stroke by a damper 15 between it and the connecting member 13, and the impact is alleviated.

The damper 15 has a rod 17 fixed in the middle to a swinging member 16, coil springs 18 made of compression springs loosely fitted on both sides of the rod 17, and a bearing 19 on the outside of the coil springs 18.
, 19 are fitted.

The damper 15 is connected to the holder 1 by these bearings 19.
It is installed on 1.

With this installation, the rod 17 that is slidably supported in the axial direction by the bearings 19, 19, the swinging member 16 is pressed from both sides by the coil springs 18,
is held at an intermediate position.

The coil springs 18 reduce the impact of stopping the holder 11 due to its reciprocating motion.

That is, the rotational diameter 11 of the shaft 14, which rotatably supports the connecting member 13 on the rotary plate 12, is set larger than the other stroke end 1□ of the lower electrode 9B.

When the holder 11 is forward 1fif+, this difference (l knee 12)
The shock is absorbed by the coil springs 18, 18 of the damper 15, and the moving speed of the holder 11, that is, the lower electrode 9B at the end of its stroke is reduced, thereby alleviating the impact.

The lower electrode 9B attached to the holder 11 and reciprocating is
At one end position 20A of the reciprocating stroke, one of the cut welding materials 6 is received, and this welding material 6 is sent to the other end position 20B of the stroke to come into contact with the other welding material 21,
The circumferential welding material is welded with the upper electrode 9A.

The other welding material 21, which is elongated in the direction perpendicular to the longitudinal direction of one welding material 6, is transferred to
2, the force is continuously transferred in the direction of arrow a.

This transfer device 22 is driven by a drive shaft 5 in conjunction with the operation of the upper electrode 9A and the lower electrode 9B, and the transfer of one welding material 6 by the transfer mechanism 7.
When B moves to the stroke end position 20B, the other welding material 21 is driven to be transferred to the same position 20B.

The transfer device 22 is removably attached to the base 2 of the main body 1, and by moving the mounting position from a position 23A indicated by a chain line to a position 23B indicated by a chain line, the welding material 21 The transfer direction is indicated by arrow a, and the force direction is indicated by arrow a5.
The direction can be changed.

With this welding device, by using one welding material 6 as a contact material and the other welding material 22 as a contact spring material, it is possible to easily assemble a relay contact shown in Figure 3, in which the contacts intersect with each other. .

That is, when the transfer device 22 is installed at the position 23A, and the transfer direction of the contact spring material (welding material 22) and the transfer direction of the contact material (welding material 6) are parallel, the longitudinal direction of the contact spring material (welding material 22) The contact material (welding material 6) is set perpendicular to the direction and welded.

Next, the transfer device 22 is changed to position 23B at a right angle and installed, and another contact spring material (welding material 22) is attached to the contact material (welding material 6).
), the contact material (welding material 6) is welded parallel to the longitudinal direction of the contact spring material (welding material 22).

For this reason, the contact welded to the contact spring at position 23A,
The contacts welded to the side contact springs at position 23B will cross each other.

Therefore, when assembling the relay contact shown in Figure 3,
By simply changing the mounting position of the transfer device 22 for the contact spring material (welding material 22), the contact material (welding material 6) can be welded to the contact spring material (welding material 22) in different welding directions.

Furthermore, the position 20B to be welded is supported by shifting the moving direction a3 of the contact material (welding material 6) by the lower electrode 9B horizontally by 45 degrees with respect to the continuous transport direction a2 of the contact material (welding material 6). Since it protrudes forward from frame 3,
Even if the transfer direction of the contact spring material (welding material 22) is changed to arrow a, the force direction, and the arrow direction, there is a risk that the spring material (welding material 22) will hit the support frame 3 of the welding device or interfere with the operation of the electrode. Nor.

[Brief explanation of the drawing]

Figures 1 and 2 are plan views showing the welding mechanism and welding material transfer direction of a conventional welding device, respectively. Figure 3 is a front view and plan view showing the contact configuration of a relay contact, respectively. Figures 4 and 2 are 5
The figures show an embodiment of the automatic welding device according to the present invention, with FIG. 4 being a plan view and FIG. 5 being a partially sectional side view of the welding mechanism. In the figure, 2 is a base, 3 is a support frame, 4 is a transmission mechanism, and 5
1 is a drive shaft, 6 is one welding material, 9A is an upper electrode, 9B is a lower electrode, 10 is a guide mechanism, 11 is a holder, 21 is the other welding material, and 22 is a transfer device.

Claims (1)

[Scope of utility model registration request] One of the welding materials that is continuously transferred is received by the lower electrode that is moved horizontally and reciprocated, is moved, and brought into contact with the other welding material that is continuously transferred, and both welding materials are welded by the upper electrode that is moved up and down. An automatic welding device in which the reciprocating direction of the lower electrode is horizontally deflected by 45 degrees with respect to the movement and transfer direction of one of the welding materials received and moved by the lower electrode.