WO2019056648A1

WO2019056648A1 - Dedicated spot welder shared by various door frame mid-pillars

Info

Publication number: WO2019056648A1
Application number: PCT/CN2017/120001
Authority: WO
Inventors: 田憬
Original assignee: 广州敏惠汽车零部件有限公司
Priority date: 2017-09-21
Filing date: 2017-12-29
Publication date: 2019-03-28
Also published as: CN107498167A; CN107498167B

Abstract

Disclosed is a dedicated spot welder shared by various door frame mid-pillars. The dedicated spot welder comprises a machine seat and connecting frames (6), wherein a first working platform (1), a second working platform (2) and a first vertical face (3) are arranged on the machine seat; a Y-axis slide rail (4) is respectively arranged on the second working platform and the first vertical face; all the connecting frames move back and forth along the Y-axis slide rails after being mounted onto the Y-axis slide rails; an X-axis drive motor (7) is respectively arranged in the connecting frames; each X-axis drive motor is connected to a Z-shaped mounting frame (8) by means of a connecting block (18); each mounting frame is provided with a spot welding unit; a copying positioning jig is arranged on the first working platform; several Y-axis drive motors (5) are arranged on the first vertical face; and each Y-axis drive motor is connected to one connecting frame (6), so that each spot welding unit can be adjusted to be at a suitable position. In this way, the dedicated spot welder can be applied to spot welding of different types of door frame mid-pillars, and realizes the simultaneous spot welding of multiple heads during mid-pillar spot welding, thereby improving the production efficiency.

Description

A joint spot welding machine capable of sharing various door frames

Technical field

The invention relates to a spot welding device in the field of automobile parts production research, in particular to a special spot welding machine capable of sharing a plurality of door frames.

Background technique

In the existing production, there are 4 different models in the door frame column, and the door frame column of each model is divided into a left piece and a right piece. Each of the door frame columns is further divided into an outer plate and an inner plate, wherein there are generally three or more spot welding positions between the outer plate and the inner plate. Each model requires a dedicated spot welding device. The spot welding equipment can weld the left and right parts of the column of the same type of door frame, but there is only one spot welding head in each spot welding equipment, and the spot welding of the column in one door frame requires multiple adjustment of the middle column or spot welding of the door panel. The position of the head can be welded. In general, the prior art has the following problems: a spot welding equipment needs to be equipped with one operator per day, and the labor cost is high; the beat is low, generally 90 PCS/H; the number of occupied equipment is large, and the floor space is large.

Summary of the invention

The object of the present invention is to provide a pillar spot welding machine capable of sharing a plurality of door frames, which adjusts the positions of the respective spot welding units through the X-axis driving motor and the Y-axis sliding rail, so that it is suitable for different types of door frame columns.

The solution to solve the technical problem of the present invention is: a special spot welding machine capable of sharing a plurality of door frames, comprising a base and a plurality of L-shaped connecting frames, wherein the first working platform is arranged on the frame, and the first working platform is arranged a second working platform above the working platform and a first vertical surface connecting the first working platform and the second working platform, the second working platform and the first vertical surface are arranged with Y-axis slide rails, all of which are The connecting frame is mounted on the Y-axis slide rail and reciprocates along the Y-axis slide rail. Each of the connecting brackets is arranged with an X-axis driving motor, and each of the X-axis driving motors passes through the connecting block and a Z-shaped mounting bracket. Connecting, each of the mounting brackets is provided with a spot welding unit, the first working platform is arranged with a contour positioning fixture, and the first vertical surface is arranged with a plurality of Y-axis driving motors, each of which The Y-axis drive motors are each connected to a connecting frame.

As a further improvement of the above technical solution, the mounting frame includes a first frame body parallel to the second working platform, a second frame body parallel to the first vertical surface, and a third frame body parallel to the first working platform. The spot welding unit includes a welding power source mounted on the first frame body, an upper welding cylinder disposed on the second frame body, and a lower welding cylinder disposed on the third frame body, the action end of the upper welding cylinder An upper electrode tip is disposed, and a lower electrode tip is disposed on an action end of the lower welding cylinder.

As a further improvement of the above technical solution, the connecting frame comprises a fourth frame body parallel to the second working platform and a fifth frame body parallel to the first vertical surface, and the upper end surface of the fourth frame body is arranged with X a shaft slide rail, an X-axis chute is arranged on the fourth frame, the X-axis drive motor is mounted on a lower end surface of the fourth frame body, the connecting block passes through the X-axis chute and bypasses the X-axis slide rail After the side, the connecting block is connected to the lower end surface of the first frame, and the first frame is mounted on the X-axis slide rail and reciprocates along the X-axis slide rail.

As a further improvement of the above technical solution, the lower electrode tip is fixed to the action end of the lower welding cylinder through a lower electrode connecting rod, and the outer surface of the lower electrode connecting rod is provided with a first spring.

As a further improvement of the above technical solution, the profiling positioning fixture is mounted on the first working platform by two first pillars, and the outer side of each of the first pillars is arranged with a bracket, and the bracket is arranged on the bracket There are two first uprights and a mount seated on the first upright, the lower end surface of the bracket is arranged with a die change cylinder, and the action end of the die change cylinder passes through the bracket and is located below the mount, The upper end surface of the mounting seat is provided with a pressing plate for pressing the contour positioning fixture.

As a further improvement of the above technical solution, the profiling positioning fixture comprises a contour positioning plate, a contour positioning block arranged on the contour positioning plate, a plurality of outer plate clamping cylinders and a plurality of inner plate clamping cylinders. The contour positioning block is arranged with a contoured positioning cavity, the inner plate clamping cylinder is directly mounted on the contour positioning plate, and the inner end clamping cylinder is arranged with an inner plate clamping block, the inner plate The clamping block moves along the X-axis direction along the action end of the inner plate clamping cylinder, and the outer plate clamping cylinder is mounted on the contour positioning plate through the second column, and the action end of the outer plate clamping cylinder is disposed outside a plate clamping block, one end of the outer plate clamping block is hinged on the second column, the free end of the outer plate clamping plate is L-shaped, and the front side of the second column is arranged with an outer plate positioning block, and the outer plate is clamped An outer plate clamping space is formed between the free end of the plate and the outer plate positioning block.

The invention has the beneficial effects that the invention reciprocates along the Y-axis slide rail by the connecting frame and the X-axis driving motor drives the Z-shaped mounting frame to reciprocate in the X-axis direction, and each connecting frame is driven by a Y-axis driving motor. Then each spot welding unit can be adjusted to the appropriate position, so that it can be used in the spot welding of different types of door frames, reducing equipment investment and reducing the floor space. The invention realizes the spot welding of the middle pillar spot welding at the same time, the tempo is increased from 90PCS/H to 270PCS/H, and the operator is reduced from 3~4 people to 1 person, which reduces the labor cost.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is apparent that the described drawings are only a part of the embodiments of the present invention, and not all of the embodiments, and those skilled in the art can obtain other designs and drawings according to the drawings without any creative work.

Figure 1 is a schematic view of an angle of the present invention;

Figure 2 is a schematic view of another angle of the present invention;

Figure 3 is a side view of the present invention.

Detailed ways

The concept, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings in order to fully understand the objects, features and effects of the present invention. It is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The scope of protection of the present invention. In addition, all the coupling/joining relationships mentioned in the text are not directly connected to the components, but rather may constitute a better coupling structure by adding or reducing the coupling accessories according to the specific implementation.

Referring to FIG. 1 to FIG. 3, a special spot welding machine capable of sharing a plurality of door frames, including a base and a plurality of L-shaped connecting frames 6, wherein the first work platform 1 is disposed on the machine base a second working platform 2 above the platform 1 and a first vertical surface 3 connecting the first working platform 1 and the second working platform 2, and the Y-axis sliding is arranged on the second working platform 2 and the first vertical surface 3 Rail 4, all of the connecting brackets 6 are mounted on the Y-axis slide rail 4 and reciprocally moved along the Y-axis slide rail 4, and each of the connecting brackets 6 is arranged with an X-axis driving motor 7, each of which is driven by the X-axis The motor 7 is connected to a Z-shaped mounting frame 8 via a connecting block 18, and each of the mounting brackets 8 is provided with a spot welding unit, and the first working platform 1 is provided with a contour positioning fixture, the first A plurality of Y-axis drive motors 5 are arranged on a vertical face 3, and each Y-axis drive motor 5 is connected to a connecting frame 6, respectively.

By reciprocating the carriage 6 along the Y-axis slide 4 and the X-axis drive motor 7 driving the Z-shaped mount 8 to reciprocate in the X-axis direction, and each of the brackets 6 is driven by a Y-axis drive motor 5, then Each spot welding unit is adjusted to the proper position, so that it can be used in the spot welding of different types of door frames, reducing equipment investment and reducing the floor space. The invention realizes the spot welding of the middle pillar spot welding at the same time, the tempo is increased from 90PCS/H to 270PCS/H, and the operator is reduced from 3~4 people to 1 person, which reduces the labor cost.

Further as a preferred embodiment, the mounting frame 8 includes a first frame 80 parallel to the second working platform 2, a second frame 81 parallel to the first vertical surface 3, and a parallel to the first working platform 1. a third frame 82, the spot welding unit including a welding power source mounted on the first frame body 80, an upper welding cylinder disposed on the second frame body 81, and a lower welding cylinder 11 disposed on the third frame body 82 An upper electrode tip 9 is disposed on the action end of the upper welding cylinder, and a lower electrode tip is disposed on the action end of the lower welding cylinder 11.

Further as a preferred embodiment, the connecting frame 6 comprises a fourth frame body 60 parallel to the second working platform 2 and a fifth frame body 61 parallel to the first vertical surface 3, the fourth frame body 60 An X-axis slide rail 19 is disposed on the upper end surface, and an X-axis slide groove 20 is disposed on the fourth frame body 60. The X-axis slide groove 20 limits the stroke of the mounting bracket 8 in the X-axis direction, and the X-axis drive motor 7 is installed at the a lower end surface of the four frame body 60, the connecting block 18 passes through the X-axis chute 20 and bypasses both sides of the X-axis slide rail 19, and the connecting block is connected to the lower end surface of the first frame body 80, the first frame The body 80 is mounted on the X-axis slide rail 19 and reciprocates along the X-axis slide rail 19. Since the mounting bracket 8 and the spot welding unit are both mounted on the connecting frame 6, the connecting bracket 6 adjusts the corresponding position with the Y-axis driving cylinder movement, since the upper electrode head and the lower electrode head in the same spot welding unit are installed. On the frame 8, therefore, the relative positions of the upper electrode tip and the lower electrode tip in the same spot welding unit are unchanged. The X-axis drive cylinder adjusts the position of the mounting bracket 8 so that the upper and lower electrode tips in the same spot welding unit are moved to the proper position.

Further, as a preferred embodiment, the lower electrode tip is fixed to the action end of the lower welding cylinder 11 by a lower electrode connecting rod, and the outer surface of the lower electrode connecting rod is provided with the first spring 10. The first spring 10 and the lower welding cylinder 11 communicate a floating mechanism that automatically floats to compensate for electrode wear.

Further as a preferred embodiment, the profiling fixture is mounted on the first working platform 1 by two first pillars, and the outer side of each of the first pillars is arranged with a bracket, and the bracket is arranged on the bracket. There are two first columns and a mounting seat 16 fitted on the first column. The lower end surface of the bracket is arranged with a die-changing cylinder 15, and the action end of the die-changing cylinder 15 passes through the bracket and is located at the mounting seat 16. Below, the upper end surface of the mounting seat 16 is provided with a pressing plate 17 for pressing the contour positioning fixture. After the pressing plate 17 is fixed to the mounting seat 16 by bolts, the contour positioning fixture is pressed and positioned. Since the different signals require different contour positioning fixtures, when the fixture is replaced, the bolts on the pressing plate 17 are first unscrewed and the pressing plate 17 is taken out, and the operating ends of the die-changing cylinders 15 on both sides are simultaneously upward. After the ejector, the profiling fixture is ejected, which is convenient for the operator to remove the jig and replace the new jig.

Further as a preferred embodiment, the profiling positioning fixture comprises a contoured positioning plate 12, a contoured positioning block disposed on the contoured positioning plate 12, a plurality of outer plate clamping cylinders 14 and a plurality of inner plate clamping The cylinder 13 is provided with a contoured positioning cavity on the contour positioning block, the inner plate clamping cylinder 13 is directly mounted on the contour positioning plate 12, and the inner end of the inner plate clamping cylinder 13 is arranged with an inner plate clamping. a block, the inner plate clamping block moves along the X-axis direction along with the action end of the inner plate clamping cylinder 13, and the outer plate clamping cylinder 14 is mounted on the contoured positioning plate 12 through the second upright, the outer plate An action end of the clamping cylinder 14 is disposed with an outer plate clamping block, one end of the outer plate clamping block is hinged on the second column, the free end of the outer plate clamping plate is L-shaped, and the front side of the second column is arranged There is an outer plate positioning block, and an outer plate clamping space is formed between the free end of the outer plate clamping plate and the outer plate positioning block.

During production, the electric welding device is first adjusted to the appropriate position by the X-axis drive motor 7 and the Z-axis drive motor. After the inner plate is placed in the contoured positioning cavity, the outer plate is placed on the inner plate, and the inner plate is clamped. After the cylinder 13 and the outer plate clamping cylinder 14 work, the corresponding workpieces are fixed, and the upper welding cylinder and the lower welding cylinder 11 in each spot welding unit simultaneously drive the upper electrode head and the lower electrode head close to the workpiece to realize simultaneous welding of multiple parts. After the welding is finished, the inner plate clamping cylinder 13 and the outer plate clamping cylinder 14 are reset, the column frame is taken out, and the new inner plate and outer plate are placed in a proper position and welded.

The above is a detailed description of the preferred embodiments of the present invention, but the invention is not limited to the embodiments, and various modifications and substitutions can be made by those skilled in the art without departing from the spirit of the invention. Such equivalent modifications or alternatives are intended to be included within the scope of the claims.

Claims

A special spot welding machine capable of sharing a plurality of door frames, comprising: a machine base and a plurality of L-shaped connecting frames, wherein the machine seat is arranged with a first working platform and a second position above the first working platform a working platform and a first vertical plane connecting the first working platform and the second working platform, the second working platform and the first vertical plane are arranged with Y-axis slide rails, all of the connecting brackets are mounted on the Y-axis slide The rails are reciprocated along the Y-axis slide rails, and each of the connecting brackets is arranged with an X-axis driving motor, and each of the X-axis driving motors is connected to a Z-shaped mounting frame through a connecting block, each of the mountings A spot welding unit is arranged on the frame, and a contour positioning fixture is arranged on the first working platform, and a plurality of Y-axis driving motors are arranged on the first vertical surface, and each Y-axis driving motor is respectively provided with one Connection bracket connection.
The pillar spot welding machine capable of sharing a plurality of door frames according to claim 1, wherein the mounting frame comprises a first frame parallel to the second working platform and a second frame parallel to the first vertical surface. And a third frame parallel to the first working platform, the spot welding unit comprising a welding power source mounted on the first frame body, an upper welding cylinder disposed on the second frame body, and being disposed on the third frame body The lower welding cylinder is provided with an upper electrode tip on the action end of the upper welding cylinder, and a lower electrode tip is arranged on the action end of the lower welding cylinder.
The pillar spot welding machine capable of sharing a plurality of door frames according to claim 2, wherein: said connecting frame comprises a fourth frame parallel to the second working platform and a fifth frame parallel to the first vertical surface The X-axis slide rail is disposed on the upper end surface of the fourth frame body, the X-axis slide groove is disposed on the fourth frame body, and the X-axis drive motor is mounted on the lower end surface of the fourth frame body, the connection block After passing through the X-axis chute and bypassing both sides of the X-axis slide rail, the connecting block is connected to the lower end surface of the first frame body, and the first frame body is mounted on the X-axis slide rail and reciprocates along the X-axis slide rail .
The pillar spot welding machine capable of sharing a plurality of door frames according to claim 2, wherein the lower electrode tip is fixed to the action end of the lower welding cylinder through a lower electrode connecting rod, and the outer surface of the lower electrode connecting rod The suit has a first spring.
The pillar spot welding machine capable of sharing a plurality of door frames according to claim 1, wherein the profile positioning fixture is mounted on the first working platform by two first pillars, each of the first pillars a bracket is disposed on the outer side of the bracket, and two brackets are disposed on the bracket, and a mounting seat is disposed on the first pillar. The lower end surface of the bracket is disposed with a die-changing cylinder, and the working end of the die-changing cylinder After passing through the bracket, it is located below the mount, and the upper end surface of the mount is provided with a pressing plate for pressing the contour positioning fixture.
The spot welding machine capable of sharing a plurality of door frames according to any one of claims 1 to 5, wherein the contour positioning fixture comprises a contour positioning plate and a contour arranged on the contour positioning plate. a positioning block, a plurality of outer plate clamping cylinders and a plurality of inner plate clamping cylinders, wherein the profiling positioning block is arranged with a contoured positioning cavity, and the inner plate clamping cylinder is directly mounted on the profiling positioning plate, The action end of the plate clamping cylinder is arranged with an inner plate clamping block that moves along the X-axis direction along with the action end of the inner plate clamping cylinder, the outer plate clamping cylinder passing the second column Mounted on the contour positioning plate, the action end of the outer plate clamping cylinder is arranged with an outer plate clamping block, one end of the outer plate clamping block is hinged on the second column, and the free end of the outer plate clamping plate is L The front side of the second column is arranged with an outer plate positioning block, and an outer plate clamping space is formed between the free end of the outer plate clamping plate and the outer plate positioning block.