JPS5838681A - Welding device of roof for automobile - Google Patents

Abstract

PURPOSE:To weld accessory parts selectively to different roofs, by selectively placing a receiving member of a roof, etc. on a fixed base, also operating it by a cam mechanism so that a welding gun can be used selectively, and making it freely oscillatable. CONSTITUTION:On a fixed base 1, a pair of welding units 2A, 2B are placed, one unit 2A is made movable by a moving base 4, and on a supporting tool 6 vertically provided on the moving base 4, a rotary frame 8 which can be freely turned around the horizontal shaft is provided, plural kinds of receiving members 9 are installed to the rotary frame 8, and a position of the receiving member 9 is fixed selectively by a cylinder device 11. On the other hand, on the fixed base 1, a cam member 14 for guiding a welding gun 16 is provided, and a cam surface 15A having a shape corresponding to a welding end edge of a roof A to be welded is provided on plural cam plates 15 placed on the upper and lower parts, and is driven by a cam roller 21. Also, the welding gun 16 is placed on the moving base so as to be slidable back and forth, and to the right and left through a base bracket 17 and a guide bracket 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automobile roof welding device, and more particularly to an automobile roof welding device that can selectively spot weld various accessory parts to a plurality of roofs of different vehicle models. .

There are various types of automobiles, such as sedans, pans, hardtops, etc., and the length, width, and welding positions of parts of the roofs vary depending on the deaf type.

Conventionally, when welding such different types of roofs, it is common to use a dedicated welding device in which welding parts are fixedly arranged according to the shape of each roof and the welding position of each part.

Therefore, when using conventional welding equipment, multiple pieces of equipment are required depending on the vehicle type, which increases equipment costs and requires a large installation space. When welding work on the same main body line, the number of assembly equipment for the accessory parts to be welded increases, and the equipment becomes internally shaped, which increases the worker's work range, increases fatigue, and reduces work efficiency. In addition to this, there was also the problem that the length of the main body line became longer, resulting in a reduction in the number of automobiles produced.

The present invention was made based on these circumstances, and
A single piece of equipment can weld multiple types of roofs, reducing equipment costs and space around the equipment, and improving work efficiency when producing multiple types of roofs on the same main body line. In order to achieve such an object, the present invention provides an automatic military roof that supports the automobile roof 7 and mounts the members and the like on one fixed base according to the type of the roof. In addition to making it possible to selectively position the welding gun, the welding gun can be selectively used according to the type of roof to perform a predetermined tracing operation using a cam mechanism, and the welding gun can also be freely swung vertically, horizontally, and longitudinally. As a support structure, it can automatically follow the angle of the welded edge of the roof during spot welding.
, is something.

With this configuration, the bridge can support the roof and attached parts to be welded to the roof in appropriate positions depending on the type by adjusting the arrangement of members, and the cam mechanism allows the welding gun to be adjusted according to the type of roof. The following movement can be performed along the appropriate route, and the swingable support structure allows spot welding to be performed at will according to the angle of the roof. In addition to making welding possible, even when applied to a single main body line, the space around the equipment can be reduced, work efficiency can be improved, and the line length can be shortened. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the structure of the present invention will be described in detail below with reference to the drawings.

A pair of welding units) 2A on the fixed base 1.

2B are arranged facing each other. Of these, one welding unit 2A is movable in the direction toward and away from the other 2B, that is, in the left-right direction. This one welding unit 2
A is a movable base 4f which is slidably supported via a guide rail 3 and is pushed and pulled by a cylinder device [5]. A support 6 is erected on top of this moving base 4, and this support! , 6 to the other welding unit) 2B together with the moving base 4 to reduce the opposing distance to v.
I4y! ! I am trying to do E. A regular polyhedron, for example, a quadrangular prism-shaped rotation frame 8 is supported at the -E portion of the support 6 so as to be rotatable around a horizontal axis. A plurality of types of members 9 are attached to each surface of the rotary frame 8 as a receiver for positioning the automobile Root Tom and its attached parts B. This rotating frame 9 has an index of 1~
It is attached coaxially and rotatably with the plate 10. By engaging the fixing claw 12 attached to the support 6 via the cylinder device 11 with this index plate 10, the roof holder can be selectively welded according to the type of roof to which the member 9 is to be welded. The arrangement of flK can be fixed.

Since the configuration of the member 9 of this receiver is the same on the fixed side, corresponding parts in the drawings will be given the same reference numerals and their explanation will be omitted.

In addition, a fixed arm 13 is integrally erected from the back side of the support 6, and a roof holder (not shown) is attached to this fixed arm 13, and each corner of the roof is suppressed and held by the roof holder so that it can be opened and closed upward. are doing.

On the other hand, the fixed pace 1 is provided with a cam member 14 located on the back side of the movable base 4 for guiding a welding gun to be described later. This cam member 14 is fixedly arranged on the fixed pace 1 parallel to the axis of the rotating frame 8. This cam member 14 has a plurality of cam plates 15 arranged above and below, and a cam surface 15A having a shape corresponding to the welding edge of the roof A to be welded is formed on the back side of each of the cam plates 15. It is set up.

- Also, the welding gun 16 is attached to the base bracket 1 on the movable base 4.
7 and a guide bracket 18 so as to be slidable in the front-back and left-right directions, and is driven by a predetermined drive device, for example, a motor 19 and a worm 2OK, and is driven by a cam L1-L21 that engages with the cam surface 15A. The driving direction is regulated. 2jJ, the base bracket 17 is supported by a guide bar 22 and a bed 23 fixedly disposed on the IJ base 4 in the front and back direction.Then, the worm 20 is engaged with the nut portion formed on the base bracket 17. The worm 20 is intermittently rotated by the motor 19, thereby driving the base bracket 17 in the front-back direction (direction perpendicular to the paper plane of FIG. 1) while stopping at the required welding position for a predetermined period of time. ing.

On the other hand, the guide bracket 18 is slidably supported by the base bracket (in the left-right direction in FIG. 1), and is constantly pressed forward (in the direction of arrow X) by the cylinder 36. When the cylinder device 25 operates, the cylinder 364:! , the roller 15A is moved away from the cam plate 15. The cam roller 21 is installed on the back side of the guide bracket 18 via a cylinder device 25 so that its height can be adjusted. As a result, the height of the cam roller 21 is adjusted by the cylinder device ff1i25, and it engages with a predetermined cam surface 15A, and as the base bracket 17 moves in the front-rear direction, the guide bracket 18f: moves in the left-right direction along the cam surface 15A. . The welding gun 16 attached to the guide bracket 18 then moves along with the guide bracket 18 in a plane.

Next, the configuration of the welding gun will be explained in detail.

As shown in FIG. 3, a flange 28 of a connecting member 27 is joined to a companion flange 26 provided on the guide plate 18. The flanges 26 and 2B are connected by a 70-teating shaft 29.

This connecting member z7 is rotatably supported on the flange 26 of the guide bracket 18 about a 70-teating shaft 29 together with a welding gun provided at the end thereof. In other words, the welding gun 16 is connected to the connecting member 27
It can also be rotated to follow the changes in the angle of the roof A in the longitudinal direction as it moves in the longitudinal direction. That is, the welding gun 16 is connected to the arms of a pair of spot guns 30 and 31.
are rotatably connected by a shaft 33, and one side 30 of this spot gun is supported by the connecting member 27. And this spot gun 30
．． 31 welding tips 32A and 32B are used to clamp the roof A and the welded part B from above and below. Therefore, when the roof A is clamped by each welding tip 32A, 32B, each welding tip 32A,
The welding gun 16 rotates around the floating shaft 29 so that the clamping force exerted by the roof 32B on the roof person becomes the most natural at right angles, and this rotational action causes the welding gun 16 to
This is done continuously when moving in the front-back direction.

Note that the clamping operation of each welding tip 32A, 32B is performed by a cylinder device 34 provided at the base end of the welding gun 16. And also each spot gun 3
The arms 0 and 31 can freely rotate around a shaft 33 that pivots them, thereby allowing the welding tip 32A to rotate.

32B, it is now possible to follow the rotation about the floating axis 29 mentioned above and the rotation about the axis 33 perpendicular to the rib as the angle changes in the longitudinal and width directions of the roof A. ing. That is, even when the welding gun 16 moves in the width direction due to the engagement between the cam member 14 and the cam roller 21, each spot gun 30, 31 of this welding gun 16
The welding tips 32A, 32B are freely oscillated about the axis 33, so that the welding tips 32A and 32B are always perpendicular to the plane of the roof A, even when the angle changes in the width direction depending on the type of the roof A. It will be placed in FIG. 4 shows a state in which the welding gun 16 is tilted by a predetermined angle α with respect to the longitudinal angle change of the roof A around the floating shaft 29 when the welding gun 16 moves in the longitudinal direction as described above. - Also, FIG. 5 shows that each spot gun 3o, 3
1 shows a state in which the welding tips 32A and 32B of No. 1 change in angle by a predetermined angle β in a direction that is always perpendicular to the surface direction toward the roof.

t, r, ``cp'' The configuration of the welding gun 16 and the configuration of the presser foot (not shown) provided on the fixed arm 13 described above are the same in the fixed side welding unit) 2B, so they correspond to the drawings. The same reference numerals as those of the movement 11 (u welding unit) 2A described above are given to the parts, and the explanation thereof will be omitted.

Next, the effect will be explained.

First, as a preparatory work, the receiver member 9 and the cam surface 15A to be used are selected. At R11, the cylinder device 5 is driven to move the movable side welding unit 2A in the left-right direction as a whole, and the arrangement of the support 6 is selected to match the roof A, that is, welding is performed. Then, once the fixed claw 12 of the cylinder device 11 is removed from the index plate 10, the receiver to be used is placed 12 in such a way that the member 9 is placed upward by the rotation of the rotating frame 8, and in this position, the fixed claw 12 is removed from the index plate. 10Vr-retained and the receiver identifies the member 9 in position. On the other hand, the cam roller 21 is moved up and down by driving the cylinder device 25, and the cam roller 21 is engaged with the corresponding cam surface 15A. At this time, it is assumed that the cam roller 21 is deviated from the surface 15A by a force l due to the cylinder 36.

After such preparatory operations, the roof A and the attached parts B are placed on the support member 9 and held by a presser foot (not shown) provided on the fixed arm 13. Then, the motor 19 is driven to move the base bracket 17 and the guide bracket 18 toward one end in the longitudinal direction, and the roof A is welded by the welding tips 32A and 32B of the welding gun 16. Clamp the edges. 1. When the base bracket 17 and the guide bracket 18 are sequentially moved in the front and back direction via the worm 20 by the drive of the motor 19, the guide bracket 18 moves on the base bracket 17 toward the cam surface 15.
The welding gun 16 moves in the left-right direction by the movement of the cam roller 21 that engages with the point A, and moves the welding gun 16 along the roof AK. In this case, spot welding is performed by the welding gun 16 that has moved and stopped at a predetermined welding position.
Since the welding tips 32A and 32B are rotatably supported around their respective axes, even when the angle of the roof A changes in various ways in the front-rear direction or width direction, each welding tip 32A, 32B can prevent the angle change of the roof A. Following this, the roof A is always maintained at a position perpendicular to the surface of the roof A, that is, at a desirable 1iI contact position.

Therefore, when the welding work is completed, the m
All you have to do is remove the contact gun 16, presser foot, etc., and pull up the roof Ai with both ends open. If you want to perform welding work again after that, you can selectively perform the preparatory operations described above.
After that, all welding operations similar to those described above can be performed. At this time, if the types of roofs to be welded are different, the arrangement of the receivers can be selected by moving the movable welding unit 2A in the left-right direction and rotating the rotating frame 8 according to the type of the roof. It is.

As described in detail in the above embodiments, the present invention is capable of welding various types of automobile roofs with a single piece of equipment. Therefore, the roof as before! Unlike those that use dedicated equipment according to the type, it does not require a variety of attached equipment, so it is possible to reduce the number of welding equipment equipment, reduce the equipment cost, and reduce the installation space.

Furthermore, even when assembling various vehicle models on the same main body line, the number of attached parts can be reduced, the work range of the worker can be reduced, work efficiency can be improved, fatigue can be reduced, and the overall length of the main body line can be reduced. It is possible to shorten the length of the process and improve production efficiency.

In the above embodiments, a cylinder device, an index plate, a motor, a worm, etc. were appropriately used as specific driving means, but the present invention is not limited to such means, and any specific driving means may be used without departing from the scope of the invention. Of course, the means etc. can be changed in various ways.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention.
Figure 1 shows the entire front view, Figure 2 is a plan view of Figure 1, A...
・Roof, B...Related parts, 1...Pace, 6.7
... Supporting tool, 8... Rotating frame, 9... Receiving member, 1
4...Cam part, l, 15...cam plate, 15A...cam surface, 16...welding gun, 17...base plate cut,
18... Guide bracket, 21... Cam roller,
30.31...Spot gun. Agent Tatsuyuki Unuma (and 2 others)

Claims (1)

[Claims] (1) Supports placed on a fixed base so that they can be spaced apart from each other, and a plurality of roof holders that are rotatable around a horizontal axis on the top of each support, depending on the type of automobile roof. a rotary frame capable of selectively positioning and fixing a predetermined member in a roof support position; a roof holder provided near the member so as to be able to suppress and open the roof; a copying cam member fixedly arranged substantially parallel to the axis of the rotating frame and having a plurality of cam surfaces corresponding to the type of the roof; and a copying cam member that is intermittently movable in a direction parallel to the axis of the rotating frame directly above the support. a base bracket provided on the base bracket; a guide bracket for supporting the welding gun provided movably on the base bracket in a direction perpendicular to the direction of movement of the base bracket; and a guide bracket provided on the guide bracket on each cam surface of the copying cam. a cam roller that selectively engages and guides the guide bracket along the welding edge of the roof;
It has a pair of clamping irregularly shaped spot guns that can clamp the welding edge of the roof in the thickness direction, and the clamping pivot shaft is vertically movable, and one of the spot guns is connected to a 70-ting shaft. Accordingly, a welding gun for spot welding is provided on the guide bracket, which is rotatable with respect to the curved part of the welding edge of the roof, and a welding gun for spot welding that is rotated to a position perpendicular to the roof by the pressing force of the spot gun. An automobile roof welding device characterized by: