CN109465585B - Integrated fixing system for combined welding of automobile sheet metal parts - Google Patents

Abstract

The invention discloses an integrated fixing system for combined welding of automobile sheet metal parts, and belongs to the field of automobile welding. The rotary power unit is used for driving the rotary table to rotate around the circumferential direction, at least one group of working platforms are arranged on the rotary table, a platform fixing unit for locating and clamping workpieces is arranged on each group of working platforms, a rotating arm fixing unit for locating and clamping other workpieces is also arranged on one side of each working platform, and the rotating arm fixing units can be turned over and correspondingly feed the other workpieces onto the working platforms. The integrated fixing system for the combined welding of the automobile sheet metal parts overcomes the defects that the automobile welding needs secondary workpiece feeding and influences the machining efficiency in the prior art, does not need repeated workpiece feeding of operators, can effectively reduce the labor intensity, and improves the production efficiency.

Description

Integrated fixing system for combined welding of automotive sheet metal parts

Technical field

The present invention relates to the technical field of automobile welding, and more specifically, to an integrated fixing system for combined welding of automobile sheet metal parts.

Background technique

In the field of automobile manufacturing, various parts need to be welded and assembled in many cases. Therefore, positioning fixtures are needed to position and clamp the welded parts before welding. Especially for automobile parts with complex shapes and structures, the welding clamping system of the workpiece is very important. Important auxiliary tools not only affect the accuracy of welding processing positions and welding quality, but are also related to the internal work efficiency and production costs of the enterprise. In actual production, it often happens that multiple components need to be combined and welded. That is, after a single component is welded, it needs to be combined with other components for welding. At present, in conventional operations, it is common to first move a single component from the upper workstation to the upper workstation. The welding station performs welding, then returns to the loading station for secondary loading, and then moves to the welding station for secondary welding to complete combined welding. However, this method requires multiple round trips to load materials, which results in high labor intensity and low production efficiency, which greatly affects production efficiency. How to effectively improve the efficiency of secondary loading and reduce labor intensity has always been the goal pursued by the industry.

After searching, there are existing technologies disclosed about the welding of automobile parts. For example, Chinese patent application number: 2018105771884. The invention is named: a welding clamping system for automobile sheet metal parts. The application includes a base, and A placement platform is provided for supporting the workpiece. The placement platform is surrounded by a plurality of upper claw units for locking the edges of the workpiece, and upper hole claw units for locking the holes on the workpiece. The upper hole is The top of the claw unit is provided with an upper hole positioning unit, and the bottom of the placement platform is provided with a lifting unit for controlling its lifting and flipping. This application overcomes the inconvenience of picking and placing automotive welding parts in the prior art, making it easier for operators to pick and place parts and effectively reducing labor intensity.

Another example is the Chinese patent application number: 2012104245155. The name of the invention is: automobile body welding device. The application includes a welding platform for placing the floor, a side clamp for clamping and positioning the side panels, and a side clamp that matches the side panel and is used to clamp it. The side grippers holding the side panels and the side gripper sets symmetrically located on both sides of the welding platform, the welding robot, the first grabbing robot, the second gripping robot, the side gripper waiting area and the side gripper waiting area; The welding robot is used to perform welding operations; the first grabbing robot is used to grab the side fixture; the second grabbing robot is used to grab the side gripper; the side fixture waiting area is used to store multiple parts corresponding to multiple models. A side gripper; the side gripper waiting area is used to store multiple side grippers corresponding to multiple models. This application is used for welding car floors and side panels to achieve the purpose of quickly mixed line welding of car bodies of various models.

To sum up, the above applications all involve the optimization of automobile welding technology, but there is no targeted solution to how to avoid the problem of multiple parts loading, and there is still room for further improvement of the technology.

Contents of the invention

1. The technical problem to be solved by the invention

The purpose of the present invention is to overcome the shortcomings in the prior art that automobile welding requires secondary loading of parts, which affects processing efficiency, and provides an integrated fixing system for combined welding of automobile sheet metal parts, which does not require operators to go back and forth multiple times to load parts, and can effectively Reduce labor intensity and improve production efficiency.

2.Technical solutions

In order to achieve the above objects, the technical solutions provided by the present invention are:

The integrated fixing system for combined welding of automobile sheet metal parts of the present invention includes a rotary power unit and a turntable. The rotary power unit is used to drive the turntable to rotate in the circumferential direction. The turntable is provided with at least one set of working platforms. Each set of working platforms is provided with A platform fixing unit is provided for positioning and clamping workpieces. One side of the working platform is also provided with a rotating arm fixing unit for positioning and clamping other workpieces. The rotating arm fixing unit can be flipped open and other workpieces can be loaded onto the working platform accordingly. .

Furthermore, the rotating arm fixing unit includes a rotating arm driving cylinder arranged on the working platform. A rotating arm pressing arm is hinged at the top of the rotating arm driving cylinder. The end of the rotating arm pressing arm is provided with a rotating arm pressing seat. The rotating arm pressing seat is arranged at the end of the rotating arm pressing arm. There is a mounting arm for mounting the clamping unit, and the swing arm driving cylinder is used to drive the mounting arm to flip open and close.

Furthermore, one side of the mounting arm is provided with a side limiter for limiting the position. The side limiter adopts a clamp cylinder. The top of the clamp cylinder is hinged with a limited pressure arm, and the end of the limit pressure arm is connected with a limited pressure arm. The seat and the side limiter are used to drive the limiter seat to flip open and close. When flipped, it abuts one side of the mounting arm and restricts it from continuing to flip; a rear buffer is provided behind the mounting arm.

Furthermore, the working platform is provided with multiple sets of platform fixing units, including a first fixing unit of the platform. The first fixing unit of the platform includes a first support seat provided on the work platform. A first support seat is provided on one side of the first support seat. Power cylinder, the top of the first power cylinder is hinged with a first pressure arm, a first positioning pin is provided on one side of the first pressure arm, and a pressure block is provided below the first pressure arm, and the pressure block is connected with the first support seat. The support blocks are distributed correspondingly up and down.

Furthermore, a connecting block is provided at the end of the first pressing arm, a first adapter block is provided on one side of the connection block, a second adapter block is provided on one side of the first adapter block, and a second adapter block is provided on one side of the first adapter block. There is a third adapter block, the first positioning pin is provided at the end of the third adapter block, multi-layer gaskets are provided between the connecting block and the first adapter block and between two adjacent adapter blocks, and The overlapping thickness extension directions of the gaskets between the connecting block and the first adapter block and between two adjacent adapter blocks are different.

Furthermore, the working platform is provided with multiple sets of platform fixing units, including a second platform fixing unit. The second platform fixing unit includes a second support seat provided on the work platform. A second support seat is provided on one side of the second support seat. Power cylinder, the top of the second power cylinder is hinged with a second pressure arm, and a second positioning pin is provided on one side of the second pressure arm; a one-way drive cylinder is also provided on one side of the second support base, and the telescopic rod end of the one-way drive cylinder A connecting seat is provided at the bottom, a middle block is provided on one side of the connecting seat, a mounting block is provided on one side of the middle block, and a movable positioning pin is provided on the end of the mounting block.

Furthermore, multiple layers of gaskets are provided between the connecting seat and the middle block, and between the middle block and the mounting block. The superimposed thickness extension directions of the gaskets between the connecting seat and the middle block, the middle block and the mounting block are different, and are different from those of a single gasket. The expansion and contraction directions of the telescopic rod toward the drive cylinder are different.

Furthermore, a connecting arm is provided at the end of the second pressing arm, a secondary connecting arm is provided on one side of the connecting arm, and a second positioning pin is provided on the secondary connecting arm; a lower positioning block is also provided at the top of the second support base, and the connecting arm An upper positioning block is provided at the bottom, which corresponds vertically to the lower positioning block below and is inlaid with the protrusion through grooves.

Furthermore, the rotating arm fixing unit is provided with a first rotating arm fixing unit. The first rotating arm fixing unit includes a rotating arm first cylinder arranged on the mounting arm. The top of the rotating arm first cylinder is hinged with a rotating arm first pressure. arm, the end of the first pressing arm of the rotating arm is provided with a rotating arm connecting block, the end of the rotating arm connecting block is provided with a rotating arm pressing block, the rotating arm pressing block is distributed up and down correspondingly with the support arm provided on the mounting arm; the mounting arm There is also a direct drive cylinder on one side. The top of the telescopic rod of the direct drive cylinder is provided with a fixed seat. One side of the fixed seat is provided with a steering block. One side of the steering block is provided with a mounting piece. The mounting piece is provided with a positioning post. The fixed base is connected to the There are multiple layers of gaskets between the steering blocks and between the steering blocks and the mounting parts.

Furthermore, the rotating arm fixing unit is provided with a second rotating arm fixing unit. The second rotating arm fixing unit includes a second rotating arm cylinder provided on one side of the mounting arm. A second rotating arm cylinder is hingedly connected to the top of the rotating arm second cylinder. The pressing arm, the end of the second pressing arm of the rotating arm is provided with a connecting piece, and the connecting piece is connected to the middle part of the double-pressing connecting rod. The two ends of the double-pressing connecting rod are respectively distributed up and down correspondingly to the sub-supports provided on the mounting arm; the mounting arm There is also at least one set of direct drive cylinders on one side. The top of the telescopic rod of the direct drive cylinder is provided with a fixed plate. One side of the fixed plate is provided with an intermediate plate. The top of the intermediate plate is provided with a positioning post.

3. Beneficial effects

Compared with the existing technology, the technical solution provided by the present invention has the following significant effects:

(1) In the integrated fixing system for combined welding of automobile sheet metal parts of the present invention, by arranging a rotating arm fixing unit on one side of the working platform, parts can be loaded on the working platform and the rotating arm fixing unit at the same time, allowing the operator to load the parts in one go All workpieces to be welded can be positioned and clamped uniformly, and then transferred to the welding station for pre-welding and combined welding respectively. The secondary loading process is completed by the automatic loading of the rotating arm fixing unit, without returning to the loading station, which is effective Improved production efficiency.

(2) In the integrated fixing system for combined welding of automobile sheet metal parts of the present invention, two sets of working platforms can be provided on both sides of the turntable, and the sides of each set of working platforms are equipped with rotating arm fixing units, which can further improve production efficiency. , to achieve uninterrupted operation of the welding station and the loading station. When one group of working platforms completes the rotation of the loading station to the welding station, the other group of working platforms just rotates to the upper working station, and the operator continues to load the parts, and then After the parts are rotated to the welding position, the previously welded working platform is reset to the upper part position. The operator can load the parts again after picking up the parts, realizing the continuous operation of welding, loading and picking up, and greatly improving the work efficiency. .

Description of drawings

Figure 1 is a schematic structural diagram of an integrated fixing system for combined welding of automobile sheet metal parts according to the present invention;

Figure 2 is a schematic structural diagram of the first fixed unit of the platform in the present invention;

Figure 3 is a schematic structural diagram of the second fixing unit of the platform in the present invention;

Figure 4 is a schematic structural diagram of the rotating arm fixing unit of the present invention; A is the open state of the rotating arm fixing unit, and B is the depressed state of the rotating arm fixing unit;

Figure 5 is a schematic diagram of the partial structure at C in Figure 4;

Figure 6 is a schematic structural diagram of the first fixed unit of the rotating arm;

Figure 7 is a schematic structural diagram of the second fixing unit of the rotating arm.

Label description in the schematic diagram:

100. Base; 200. Rotary power unit; 300. Turntable; 400. Working platform; 500. Rotary arm fixed unit; 600. First fixed unit of platform; 700. Second fixed unit of platform; 800. First fixed unit of rotating arm ;900, second fixed unit of the rotating arm;

610. First base; 620. First support seat; 621. Support block; 630. First power cylinder; 631. First pressure arm; 632. Connection block; 633. Pressure block; 634. First transfer block ; 635. Second transfer block; 636. Third transfer block; 637. First positioning pin;

710. Second base; 711. Second support base; 712. Pad; 713. Support pad; 720. Second power cylinder; 721. Second pressure arm; 722. Connecting arm; 723. Secondary connecting arm; 724 , second positioning pin; 730, one-way drive cylinder; 731, connecting seat; 732, intermediate block; 733, installation block; 734, movable positioning pin;

510. Rotating arm driving cylinder; 511. Rotating arm pressing arm; 512. Rotating arm pressing seat; 520. Mounting arm; 521. Mounting seat; 522. Mounting rod; 523. Support arm; 524. Sub-support piece; 530. Rear Buffer; 540, side limiter; 541, limit pressure arm; 542, limit seat;

810. The first cylinder of the rotating arm; 811. The first pressing arm of the rotating arm; 812. The connecting block of the rotating arm; 813. The pressing block of the rotating arm; 820. Direct drive cylinder; 821. Fixed seat; 822. Steering block; 823. Installation Parts; 824, positioning column;

910. The second cylinder of the swing arm; 911. The second pressure arm of the swing arm; 912. Connector; 913. Double pressure connecting rod; 920. Direct drive cylinder; 921. Fixed plate; 922. Intermediate plate; 923. Point positioning post.

Detailed ways

In order to further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described below in conjunction with examples.

Example 1

As shown in Figures 1 to 7, the integrated fixing system for combined welding of automobile sheet metal parts in this embodiment includes a rotary power unit 200 and a turntable 300. As shown in Figure 1, the rotary power unit 200 is disposed on the base 100. , a turntable 300 is provided on the top of the rotary power unit 200. The rotary power unit 200 is used to drive the turntable 300 to rotate in a circumferential direction. Specifically, the rotary power unit 200 can adopt a variety of rotary driving mechanisms in the industry, such as motors, reducer series, etc. I will not go into details here. The turntable 300 is provided with at least one set of working platforms 400. Each set of working platforms 400 is provided with a platform fixing unit for positioning and clamping workpieces. One side of the working platform 400 is also provided with a set of platform fixing units for positioning and clamping other workpieces. The rotating arm fixing unit 500 of the workpiece can be flipped open and other workpieces can be loaded onto the working platform 400 accordingly.

This embodiment is used for combined welding of automobile parts that require secondary loading. The initial rotating arm fixing unit 500 is in an outwardly opened state. When loading, the operator clamps and fixes the workpiece to be welded on the work platform 400, and will need to Other workpieces for combined welding are clamped and fixed on the rotating arm fixing unit 500, that is, loading parts in two areas is completed at a time, and then the power unit 200 drives the turntable 300 to drive the work platform 400 to rotate to the welding station. First, the work platform 400 is mounted The workpieces are initially pre-welded, and then the rotating arm fixing unit 500 is turned over in a direction close to the working platform 400, and other workpieces that need to be combined and welded are placed in corresponding positions on the working platform 400, so that they are consistent with the pre-welded workpieces on the working platform 400. With accurate position alignment, combined welding between multiple workpieces can be performed.

At present, in the industry, for combined welding processes that require secondary loading, the parts are often transferred to the welding station for pre-welding after loading, and then returned to the loading station for re-alignment, secondary loading and fixation, and then transferred to The welding station performs combined welding, which is cumbersome and has low processing efficiency. In this embodiment, the rotating arm fixing unit 500 is provided so that the operator can position and clamp all the workpieces to be welded in a single loading operation, and then transfer them to the welding station respectively. Pre-welding and combined welding are performed. The secondary loading process is completed by the automatic loading of the rotating arm fixing unit 500. There is no need to return to the loading station, which effectively improves production efficiency. Two sets of working platforms 400 can be set on both sides of the turntable 300. Each group of working platforms 400 is provided with a rotating arm fixing unit 500 on the side, which can further improve production efficiency and realize uninterrupted operation of the welding station and loading station. When a group of working platforms 400 completes the rotation of the loading station to the welding station, When the work platform 400 is in position, the other set of working platforms 400 just rotates to the upper part station, the operator continues to load the parts, and then the upper part is rotated to the welding position. The previously welded work platform 400 is reset to the upper part station, and the operator picks up the parts. Then the parts can be loaded again, realizing the continuous operation of welding, loading, and picking up parts, and the work efficiency is greatly improved. In this embodiment, the working platform 400 is tilted to adapt the working surface to the operating angle of the employee, making it convenient for the operator. You can directly pick up and place parts in an upright state without having to bend down significantly, which effectively reduces labor intensity and helps improve operating efficiency.

As shown in Figures 4 and 5, the rotating arm fixing unit 500 in this embodiment includes a rotating arm driving cylinder 510 disposed on the work platform 400. The rotating arm driving cylinder 510 is hinged with a rotating arm pressing arm 511 at the top, which can drive the rotating arm pressing arm 511 at the top of the rotating arm driving cylinder 510. The rotating arm pressing arm 511 flips open and closes. The rotating arm driving cylinder 510 can use a conventional clamp cylinder in the industry, such as the Tuenkers clamp series products of Shanghai Decos Machinery Automation Technology Co., Ltd., and its structure and use are all well known in the industry and will not be described in detail here. The end of the rotating arm pressing arm 511 is provided with a rotating arm pressing seat 512, and the rotating arm pressing seat 512 is provided with a mounting arm 520 for installing the clamping unit. The driving cylinder 510 drives the rotating arm pressing arm 511 to flip open and close, thereby driving the mounting arm 520 to flip open and close, and other workpieces can be flipped and loaded to the working platform 400 position.

In this embodiment, one side of the mounting arm 520 is provided with a side limiter 540 for limiting. The side limiter 540 also adopts a conventional clamp cylinder in the industry. The top end of the clamp cylinder is hinged to a limit pressure arm. 541. The end of the limit pressure arm 541 is connected to the limit seat 542. The side limiter 540 can drive the limit pressure arm 541 and the limit seat 542 to flip open and close. When the swing arm driving cylinder 510 drives the swing arm pressure arm 511 and When the mounting arm 520 is turned over, the limit pressure arm 541 is in an outwardly opened state to avoid affecting the turning process of the installation arm 520. When the installation arm 520 is turned over in place, the side limiter 540 drives the limit pressure arm 541 to move closer to the installation arm. The inner side of 520 is flipped, and finally the limit seat 542 is pressed against the inner side of the mounting arm 520 to limit its continued flipping or unexpected movement of the position. A rear buffer 530 is also provided behind the mounting arm 520. When the mounting arm 520 is opened outwards and in place When , the rear buffer 530 is used to support, limit and effectively buffer from the rear of the mounting arm 520 to prevent the mounting arm 520 from shaking or overturning. The rear buffer 530 cooperates with the limiter seat 542 and is respectively located on the mounting arm 520 On the front and rear sides of the flip direction, the flip process of the mounting arm 520 is effectively limited to control, which effectively ensures the accuracy and stability of the flip, and is conducive to ensuring the loading accuracy and welding accuracy of the workpiece.

Example 2

The integrated fixing system for combined welding of automobile sheet metal parts in this embodiment is basically the same as in Embodiment 1. Furthermore, in this embodiment, the working platform 400 is provided with multiple sets of platform fixing units, including the first platform fixing unit 600 , as shown in Figure 2, the first fixed unit 600 of the platform includes a first support base 620 provided on the working platform 400. Specifically, the working platform 400 is provided with a first base 610, and the first supporting base 620 is detachably Disposed on the top of the first base 610, a first power cylinder 630 is provided on one side of the first support base 620. The top of the first power cylinder 630 is hinged with a first pressure arm 631. The first power cylinder 630 also adopts the conventional method in the industry. The clamp cylinder can drive the first pressure arm 631 at the top to flip open and close. A first positioning pin 637 is provided on one side of the first pressure arm 631, and a pressure block 633 is provided below the first pressure arm 631. The pressure block 633 is distributed up and down correspondingly to the support blocks 621 provided on the first support base 620. The two cooperate to support and clamp the workpiece from the upper and lower sides respectively, and the workpiece is clamped between the two. The first fixing unit 600 of the platform is used to simultaneously clamp and pin the workpiece. In the initial state, the first pressing arm 631 is in an outwardly open state. After the workpiece is placed correspondingly, the first pressing arm 631 together with The pressing block 633 and the first positioning pin 637 are synchronously flipped toward the workpiece. The pressing block 633 matches the support block 621 up and down to clamp the workpiece, and the first positioning pin 637 is inserted downward into the corresponding pin hole for positioning.

Specifically, a connecting block 632 is provided at the end of the first pressing arm 631, a first adapter block 634 is provided on one side of the connection block 632, a second adapter block 635 is provided on one side of the first adapter block 634, and the second adapter block 635 is provided on one side of the first adapter block 634. A third adapter block 636 is provided on one side of the adapter block 635. A first positioning pin 637 is provided at the end of the third adapter block 636. Between the connection block 632 and the first adapter block 634 and between two adjacent adapter blocks There are multiple layers of gaskets between them, and the overlapping thickness extension directions of the gaskets between the connecting block 632 and the first transfer block 634 and between two adjacent transfer blocks are different, as shown in the orientation in Figure 2. The first adapter block 634 is provided on the front side of the connection block 632, the second adapter block 635 is provided on the left side of the first adapter block 634, and the third adapter block 636 is provided on the lower side of the second adapter block 635. By adjusting the number and thickness of the multi-layer gasket, the position of the first positioning pin 637 can be fine-tuned in multiple directions (front and back, left and right, up and down) to further ensure the accuracy of pin hole positioning. Similarly, the pressure block 633 is provided at the lower part of the connection block 632, and multi-layer gaskets are also provided between the pressure block 633 and the connection block 632, and between the support block 621 and the first support base 620.

In this embodiment, the lower part of the connecting block 632 and the top of the first support base 620 are respectively provided with matching positioning blocks. Matching grooves and protrusions are respectively provided on the opposite surfaces of the two positioning blocks. Through the grooves and the protrusions, The caliper achieves accurate positioning to ensure the position accuracy and stability of the first pressing arm 631 flipping.

In this embodiment, the working platform 400 is also provided with a second platform fixing unit 700. As shown in Figure 3, the second platform fixing unit 700 includes a second support seat 711 provided on the working platform 400. Specifically, the working platform 400 A second base 710 is provided on the top of the second base 710 . A second support base 711 is detachably provided on the top of the second base 710 . A second power cylinder 720 is provided on one side of the second support base 711 . The top of the second power cylinder 720 is hingedly connected to a second base 710 . The second pressure arm 721. Similarly, the second power cylinder 720 uses a clamp cylinder to drive the second pressure arm 721 to flip open and close. A second positioning pin 724 is provided on one side of the second pressure arm 721. Specifically, the second pressure arm 721 is provided with a second positioning pin 724. A connecting arm 722 is provided at the end of the pressing arm 721. A secondary connecting arm 723 is provided on one side of the connecting arm 722. The second positioning pin 724 is provided on the secondary connecting arm 723; there are multiple layers between the secondary connecting arm 723 and the connecting arm 722. gasket; the second positioning pin 724 is used to position the lower hole from above; the top of the second support base 711 is also provided with a lower positioning block, and the bottom of the connecting arm 722 is provided with an upper positioning block corresponding to the upper positioning block and the lower positioning block. The lower positioning block corresponds up and down and is matched with the protruding inlay through the groove. The top of the second support seat 711 is also provided with a pad 712 and a support pad 713 for supporting the workpiece. There are also multiple layers of spacers between the two to facilitate fine-tuning the height position of the support pad 713. The support pad 713 is used to support the workpiece from below. artifact.

In this embodiment, a one-way drive cylinder 730 is also provided on one side of the second support seat 711. The end of the telescopic rod of the one-way drive cylinder 730 is provided with a connecting seat 731. One side of the connecting seat 731 is provided with an intermediate block 732. The intermediate block 732 A mounting block 733 is provided on one side, and a movable positioning pin 734 is provided at the end of the mounting block 733 . Multiple layers of gaskets are provided between the connecting seat 731 and the middle block 732, and between the middle block 732 and the mounting block 733. The overlapping thickness extension directions of the gaskets between the connecting seat 731 and the middle block 732, and the middle block 732 and the mounting block 733 are different. , and is different from the expansion direction of the telescopic rod of the one-way drive cylinder 730, so that all-round fine-tuning of the movable positioning pin 734 can be realized. As shown in the orientation in Figure 3, the telescopic rod of the one-way drive cylinder 730 expands and contracts in the front and rear direction, and the center The block 732 is arranged on the upper side of the connecting seat 731, and the mounting block 733 is arranged on the right side of the middle block 732. They cooperate with each other to control the front and rear, left and right, and up and down positions of the movable positioning pin 734. In this embodiment, the movable positioning pins 734 are used to position holes in the workpiece from the side, and the second positioning pins 724 are used to position the holes in the workpiece from different directions to adapt to the complex shape of the workpiece. Similarly, in this embodiment, according to the shape requirements of the workpiece, multiple sets of fixing units can be provided on the work platform 400. The specific structure of each set of fixing units is not limited to this embodiment.

Example 3

The integrated fixing system for combined welding of automobile sheet metal parts in this embodiment is basically the same as the above embodiment. Furthermore, as shown in FIG. 6 , in this embodiment, the rotating arm fixing unit 500 is provided with a first rotating arm fixing unit. 800. The first rotating arm fixing unit 800 includes a first rotating arm cylinder 810 provided on the mounting arm 520. The top of the rotating arm first cylinder 810 is hinged with a first rotating arm pressing arm 811. The first rotating arm cylinder 810 adopts a clamping method. The cylinder of the device can drive the first pressing arm 811 of the rotating arm to flip open and close. The end of the first pressing arm 811 of the rotating arm is provided with a rotating arm connecting block 812, and the end of the rotating arm connecting block 812 is provided with a rotating arm pressing block 813. The arm pressure block 813 is distributed up and down correspondingly to the support arm 523 provided on the mounting arm 520. Specifically, the mounting arm 520 is provided with a mounting base 521, and the rotating arm first cylinder 810 is disposed on the mounting base 521. A mounting rod 522 is also provided. The mounting rod 522 extends in the same direction as the rotating arm connecting block 812. The supporting arm 523 is provided on the mounting rod 522 and cooperates with the rotating arm pressing block 813 directly above. The workpiece is clamped on both sides. between.

In this embodiment, one side of the mounting arm 520 is also provided with a direct drive cylinder 820. The top of the telescopic rod of the direct drive cylinder 820 is provided with a fixed seat 821. One side of the fixed seat 821 is provided with a steering block 822, and one side of the steering block 822 is provided with a mounting block 822. Part 823, the mounting part 823 is provided with a positioning post 824, and multiple layers of gaskets are provided between the fixed base 821 and the steering block 822, and between the steering block 822 and the mounting part 823. Similarly, there are The thickness of the sheet extends in different directions, enabling all-round fine-tuning of the positioning posts 824 in the front, rear, left, right, and up and down to ensure positioning accuracy. The positioning posts 824 in this embodiment are used to position the workpiece holes from below.

As shown in Figure 7, in this embodiment, the rotating arm fixing unit 500 is provided with a second rotating arm fixing unit 900. The second rotating arm fixing unit 900 includes a second rotating arm cylinder 910 provided on one side of the mounting arm 520. The rotating arm A second pressing arm 911 of the rotating arm is hinged to the top of the second cylinder 910. The second pressing arm 911 of the rotating arm also adopts a clamp cylinder, which can drive the second pressing arm 911 of the rotating arm to flip open and close. The end of the second pressing arm 911 of the rotating arm A connecting piece 912 is provided, and the connecting piece 912 is connected to the middle part of the double pressure connecting rod 913. The two ends of the double pressure connecting rod 913 are respectively distributed up and down correspondingly with the sub-supports 524 provided on the mounting arm 520, and the workpiece is clamped on the double pressure connecting rod 913. Between the pressure connecting rod 913 and the sub-support member 524, the double pressure connecting rod 913 realizes downward pressing and positioning of two positions of the workpiece at the same time. One side of the mounting arm 520 is also provided with at least one set of direct drive cylinders 920. The top of the telescopic rod of the direct drive cylinder 920 is provided with a sub-fixing plate 921. One side of the sub-fixed plate 921 is provided with a sub-intermediate plate 922. The sub-intermediate plate 922 A branch positioning post 923 is provided at the top. Similarly, multiple layers of gaskets are also provided between the branch fixed plate 921 and the branch middle plate 922. The branch middle plate 922 can be provided with multiple pieces according to requirements for adjusting commutation. In this embodiment, There are two components of the direct drive cylinder 920, and two positioning posts 923 are respectively located near the sub-supports 524 to achieve simultaneous positioning of the two holes on both sides of the workpiece from below.

The present invention and its embodiments are schematically described above. This description is not limiting. What is shown in the drawings is only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by the invention and without departing from the spirit of the invention, can devise structural methods and embodiments similar to the technical solution without inventiveness, they shall all fall within the protection scope of the invention. .

Claims (5)

1. An integrated fixing system for combined welding of automobile sheet metal parts, characterized by: including a rotary power unit (200) and a turntable (300). The rotary power unit (200) is used to drive the turntable (300) to rotate in the circumferential direction, The turntable (300) is provided with at least one set of working platforms (400). The working platforms (400) are tilted, and each set of working platforms (400) is provided with a platform fixing unit for positioning and clamping workpieces. The working platforms (400) One side is also provided with a rotating arm fixing unit (500) for positioning and clamping other workpieces. The rotating arm fixing unit (500) can be flipped open and correspondingly loaded with other workpieces onto the working platform (400); The rotating arm fixing unit (500) includes a rotating arm driving cylinder (510) arranged on the working platform (400). The rotating arm driving cylinder (510) has a rotating arm pressing arm (511) hinged at the top, and the rotating arm pressing arm (511) The end of the rotating arm press seat (512) is provided with a mounting arm (520) for installing the clamping unit, and the rotating arm driving cylinder (510) is used to drive the mounting arm (520). Perform flip opening and closing; One side of the mounting arm (520) is provided with a side limiter (540) for limiting the position. The side limiter (540) adopts a clamp cylinder, and the top of the clamp cylinder is hinged with a limit pressure arm (541). The end of the limit pressure arm (541) is connected to the limit seat (542). The side limiter (540) is used to drive the limit seat (542) to flip open and close. When flipped, it abuts against one side of the installation arm (520) and Restrict it from continuing to flip; a rear buffer (530) is provided behind the mounting arm (520); The working platform (400) is provided with multiple sets of platform fixing units, including a first platform fixing unit (600) and a second platform fixing unit (700), where the first platform fixing unit (600) includes a The first support seat (620) is provided with a first power cylinder (630) on one side of the first support seat (620), and a first pressure arm (631) is hingedly connected to the top of the first power cylinder (630). A first positioning pin (637) is provided on one side of a pressure arm (631), and a pressure block (633) is provided below the first pressure arm (631). The pressure block (633) and the first support seat (620) are provided with The support blocks (621) are distributed correspondingly up and down; The second fixed unit (700) of the platform includes a second support seat (711) provided on the working platform (400). A second power cylinder (720) is provided on one side of the second support seat (711). The second power cylinder A second pressing arm (721) is hingedly connected to the top of the (720), and a second positioning pin (724) is provided on one side of the second pressing arm (721); a one-way driving cylinder (724) is also provided on one side of the second support seat (711). 730), the end of the telescopic rod of the one-way drive cylinder (730) is provided with a connecting seat (731), a middle block (732) is provided on one side of the connecting seat (731), and a mounting block (732) is provided on one side of the middle block (732) 733), the end of the mounting block (733) is provided with a movable positioning pin (734); there are multiple layers between the connecting seat (731) and the middle block (732), the middle block (732) and the mounting block (733). Gasket, the superimposed thickness of the gasket between the connecting seat (731) and the middle block (732), the middle block (732) and the installation block (733) extends in different directions, and is telescopic with the telescopic rod of the one-way drive cylinder (730) The direction is different. 2. The integrated fixing system for combined welding of automobile sheet metal parts according to claim 1, characterized in that: a connecting block (632) is provided at the end of the first pressing arm (631), and one side of the connecting block (632) A first transfer block (634) is provided, a second transfer block (635) is provided on one side of the first transfer block (634), and a third transfer block (635) is provided on one side of the second transfer block (635). 636), the first positioning pin (637) is provided at the end of the third adapter block (636), between the connecting block (632) and the first adapter block (634) and between two adjacent adapter blocks. Multiple layers of gaskets are provided, and the stacked thickness extension directions of the gaskets between the connecting block (632) and the first transfer block (634) and between two adjacent transfer blocks are different. 3. The integrated fixing system for combined welding of automobile sheet metal parts according to claim 1, characterized in that: a connecting arm (722) is provided at the end of the second pressing arm (721), and one side of the connecting arm (722) A secondary connecting arm (723) is provided, and a second positioning pin (724) is provided on the secondary connecting arm (723); a lower positioning block is also provided at the top of the second support base (711), and a corresponding lower positioning block is provided at the bottom of the connecting arm (722). The upper positioning block corresponds vertically to the lower positioning block below and is inlaid with the protrusion through grooves. 4. The integrated fixing system for combined welding of automobile sheet metal parts according to claim 1, characterized in that: the rotating arm fixing unit (500) is provided with a first rotating arm fixing unit (800). The fixed unit (800) includes a first rotating arm cylinder (810) provided on the mounting arm (520). A first rotating arm pressure arm (811) is hingedly connected to the top of the first rotating arm cylinder (810). The end of the arm (811) is provided with a rotating arm connecting block (812), and the end of the rotating arm connecting block (812) is provided with a rotating arm pressing block (813). The rotating arm pressing block (813) is connected with the mounting arm (520) The support arm (523) provided on the top is distributed up and down correspondingly; a direct drive cylinder (820) is also provided on one side of the mounting arm (520), and a fixed seat (821) is provided at the top of the telescopic rod of the direct drive cylinder (820), and the fixed seat (821) 821) is provided with a steering block (822) on one side, and a mounting piece (823) is provided on one side of the steering block (822). A positioning post (824) is provided on the mounting piece (823), and the fixed base (821) and the steering block (821) are There are multiple layers of gaskets between the steering block (822) and the mounting piece (823). 5. The integrated fixing system for combined welding of automobile sheet metal parts according to claim 1 or 4, characterized in that: the rotating arm fixing unit (500) is provided with a second rotating arm fixing unit (900), and the rotating arm The second fixed unit (900) includes a second rotating arm cylinder (910) provided on one side of the mounting arm (520). A second rotating arm pressure arm (911) is hinged to the top of the second rotating arm cylinder (910). The end of the second pressure arm (911) is provided with a connector (912). The connector (912) is connected to the middle part of the double pressure connecting rod (913). The two ends of the double pressure connecting rod (913) are respectively connected to the mounting arm (520). ) are provided with sub-supports (524) correspondingly distributed up and down; one side of the mounting arm (520) is also provided with at least one set of direct drive cylinders (920), and the top of the telescopic rod of the sub-direct drive cylinder (920) is provided with sub-fixed Plate (921), one side of the fixed plate (921) is provided with an intermediate plate (922), and the top of the intermediate plate (922) is provided with a positioning post (923).