Quick clamp changing system for body-in-white welding workstation

Abstract

The utility model relates to the technical field of mechanical welding, in particular to a clamp quick-changing system for a body-in-white welding workstation. The three-axis positioner comprises a reversing frame, a partition plate is fixedly installed at the half position of the reversing frame, a first workbench and a second workbench are fixedly installed on the two sides of the partition plate respectively, the first workbench and the second workbench are the same in structure, lug plates are fixedly arranged at the two ends of the short edge of each workbench, guide plates are fixedly installed on the inner sides of the lug plates, and the guide plates are fixedly installed on the outer sides of the lug plates. A first clamp locking mechanism, a clamp positioning mechanism and a second clamp locking mechanism are sequentially and fixedly arranged on the side, close to the guide plate, of the upper surface of each workbench from front to back, and a gas circuit lifting device is fixedly arranged on the other side of the first clamp locking mechanism, the other side of the clamp positioning mechanism and the other side of the second clamp locking mechanism and matched with a clamp quick-changing trolley. And the clamp quick-change table is transferred to the workbench. And the welding clamps can be rapidly switched, manpower is saved, and the utilization rate of equipment is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical welding, in particular to a fixture quick-changing system for a body-in-white welding workstation. Background Art

[0002] In modern industrial manufacturing, especially in the field of welding construction machinery, the development of welding technology has a crucial impact on product quality and production efficiency. In the specific area of ​​body-in-white welding, the use and switching of welding fixtures has become a process that urgently needs optimization. Traditional welding fixture switching methods have many problems. When welding fixtures need to be switched on the same equipment, logistics and transportation equipment such as forklifts, ground cranes, and overhead cranes are usually required. This method not only requires the coordination of multiple equipment resources, but also the close collaboration of two or three workers.

[0003] During the actual operation, workers first need to operate a forklift or other equipment close to the welding equipment, then carefully use lifting tools to remove the old welding fixture from the welding positioner. This process requires precise operation of the lifting tools to ensure that the fixture is not damaged during removal, while also ensuring the safety of surrounding personnel and equipment. Afterwards, the new welding fixture is hoisted onto the welding positioner for installation and commissioning. The entire process is very tedious and requires a significant investment of manpower and time.

[0004] Because this traditional fixture switching method is time-consuming, it results in long periods of equipment downtime, significantly reducing equipment utilization. Furthermore, the multi-person collaborative approach increases labor costs, and due to the numerous manual operations, human errors are inevitable, further impacting production efficiency. Furthermore, the frequent use of lifting equipment can disrupt logistics channels and other equipment within the workshop, hindering the overall stability and efficiency of production. These issues severely hinder the development of efficient and intelligent body-in-white welding production.

[0005] Therefore, a new type of fixture quick change system is urgently needed to solve these problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a body-in-white welding workstation fixture quick-change system, which can realize rapid switching of welding fixtures, save manpower and improve the utilization rate of equipment.

[0007] The utility model solves the technical problem by adopting the following technical solutions:

[0008] A quick-change fixture system for a body-in-white welding workstation includes a three-axis positioner, an ear plate, a guide plate, a first clamp locking mechanism, a second clamp locking mechanism, a clamp positioning mechanism, a pneumatic lifting device, a clamp quick-change platform and a clamp quick-change trolley. The three-axis positioner includes a rotary frame, a partition plate is fixedly installed at one half of the rotary frame, and a first workbench and a second workbench are fixedly installed on both sides of the partition plate. The first workbench and the second workbench have the same structure, ear plates are fixed at both ends of the short side of each workbench, and a guide plate is fixed on the inner side of the ear plate. The upper surface of each workbench is close to the guide plate and is fixed with a first clamp locking mechanism, a clamp positioning mechanism and a second clamp locking mechanism from front to back in sequence. An air path lifting device is fixed on the other side of the first clamp locking mechanism, the clamp positioning mechanism and the second clamp locking mechanism, which cooperates with the ball bearing of the clamp quick-change trolley to transfer the clamp quick-change platform to the workbench.

[0009] Moreover, the three-axis positioner also includes a base, a servo motor, a gear, a sprocket and a rotating shaft. A sprocket is fixedly installed at the bottom center of the rotating frame, and the base is fixedly installed at the bottom of the sprocket. The base and the center of the sprocket are connected through a rotating shaft. A servo motor is fixed on one side of the rotating shaft. The output shaft of the servo motor is connected to the gear, and the gear is engaged with the sprocket.

[0010] Moreover, the fixture positioning mechanism includes a cylinder and a positioning block. The cylinder is fixed on the lower surface of the workbench, and the positioning block is fixed on the upper surface of the workbench. The cylinder and the positioning block are arranged to overlap in the longitudinal direction to ensure that the piston rod of the cylinder passes through the workbench and the positioning block to position the fixture.

[0011] Moreover, the first clamp locking mechanism includes a locking block, a locking rod, a locking plate and a locking shaft. One side of the locking block is open, and a locking plate is fixed with a bolt on the outer side of the opening of the locking block. The locking shaft passes through the locking block, and a locking rod is mounted on the locking shaft. The locking rod rotates along the locking shaft and is inserted into the clamp hole. The clamp is locked by fixing the locking plate with a bolt.

[0012] Moreover, the first clamp locking mechanism and the second clamp locking mechanism have the same structure.

[0013] Moreover, it also includes a pneumatic valve island, which is fixed on the lower surfaces of the first workbench and the second workbench and is electrically connected to the pneumatic lifting device.

[0014] The advantages and positive effects of the utility model are:

[0015] 1. The fixture quick-change system of this utility model can realize the rapid replacement of fixtures through reasonable structural design, especially the cooperation between the three-axis positioner and various related mechanisms, reducing the manual operation and equipment coordination time in traditional replacement methods, and greatly improving the fixture replacement efficiency of the body-in-white welding workstation.

[0016] 2. The special arrangement of the cylinder and the positioning block in the fixture positioning mechanism of the utility model and the structural design of the first and second fixture locking mechanisms ensure the precise positioning and firm locking of the fixture on the workbench, which is beneficial to improving the quality of body-in-white welding and reducing welding defects caused by inaccurate fixture positioning.

[0017] 3. The electrical connection between the pneumatic valve island and the pneumatic lifting device of the utility model enables the entire fixture quick-change process to be automatically controlled. At the same time, the fixture quick-change table is transferred to the workbench through the cooperation of the action of the pneumatic lifting device and the ball bearings on the fixture quick-change trolley, which is easy and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a schematic structural diagram of the first workbench of the present utility model.

[0020] Figure 3 It is a partial structural schematic diagram of the utility model from the first viewing angle.

[0021] Figure 4 This is a partial structural diagram of the utility model from a second viewing angle.

[0022] Reference numerals

[0023] 1-partition plate, 2-first workbench, 3-second workbench, 4-ball, 5-quick change fixture table, 6-quick change fixture trolley, 7-rotating frame, 8-ear plate, 9-guide plate, 10-piston rod, 11-positioning block, 12-pneumatic valve island, 13-pneumatic lifting device, 14-locking block, 15-locking shaft, 16-locking rod, 17-rotating shaft, 18-servo motor, 19-gear disc, 20-base, 21-gear. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and not restrictive, and should not be used to limit the scope of protection of the present invention.

[0025] A body-in-white welding workstation fixture quick-change system includes a three-axis positioner, an ear plate 8, a guide plate 9, a first fixture locking mechanism, a second fixture locking mechanism, a fixture positioning mechanism, a pneumatic lifting device 13, a fixture quick-change platform 5 and a fixture quick-change trolley 6. The three-axis positioner includes a rotary frame 7, a partition plate 1 is fixedly installed at one half of the rotary frame 7, and a first workbench 2 and a second workbench 3 are fixedly installed on both sides of the partition plate 1. The first workbench 2 and the second workbench 3 are fixedly installed. The structures are the same, with ear plates 8 fixed at both ends of the short side of each workbench, and guide plates 9 fixed on the inner side of the ear plates 8. The upper surface of each workbench, close to the guide plate 9, is fixed with the first clamp locking mechanism, the clamp positioning mechanism and the second clamp locking mechanism from front to back in sequence. An air circuit lifting device is fixed on the other side of the first clamp locking mechanism, the clamp positioning mechanism and the second clamp locking mechanism, which cooperates with the ball 4 of the clamp quick-change trolley 6 to transfer the clamp quick-change table 5 to the workbench.

[0026] The three-axis positioner also includes a base 20, a servo motor 18, a gear 21, a gear disc 19 and a rotating shaft 17. A gear disc 19 is fixedly installed at the bottom center of the rotating frame 7, and the base 20 is fixedly installed at the bottom of the gear disc 19. The base 20 and the center of the gear disc 19 are connected through the rotating shaft 17. A servo motor 18 is fixedly installed on one side of the rotating shaft 17. The output shaft of the servo motor 18 is connected to the gear 21, and the gear 21 is engaged with the gear disc 19. Through this structure, the precise rotation movement of the rotating frame 7 is effectively achieved.

[0027] The fixture positioning mechanism includes a cylinder (not shown in the figure) and a positioning block 11. The cylinder is fixed to the lower surface of the workbench, and the positioning block 11 is fixed to the upper surface of the workbench. The cylinder and the positioning block 11 are arranged to overlap in the longitudinal direction. When the fixture needs to be positioned, the piston rod 10 of the control cylinder passes through the workbench and the positioning block 11 to position the fixture.

[0028] The first clamp locking mechanism includes a locking block 14, a locking rod 16, a locking plate and a locking shaft 15. One side of the locking block 14 is open, and a locking plate is fixed with a bolt on the outer side of the opening of the locking block 14. The locking shaft 15 passes through the locking block 14, and a locking rod 16 is mounted on the locking shaft 15. The locking rod 16 rotates along the locking shaft 15 and is inserted into the clamp hole. The clamp is locked by fixing the locking plate with bolts.

[0029] The first clamp locking mechanism has the same structure as the second clamp locking mechanism. After the clamp quick-change table 5 is pushed onto the workbench, the locking rod 16 is manually rotated to a vertical position to fix the locking plate, which can effectively ensure that the clamp is firmly locked on the workbench.

[0030] The system also includes a pneumatic valve island 12, which is fixed to the lower surfaces of the first and second workbenches 2 and 3 and electrically connected to the pneumatic lifting device 13. The pneumatic valve island 12 precisely controls the movement of the pneumatic lifting device 13, achieving smooth lifting and placement of the fixture. This, in turn, works in conjunction with the fixture quick-change trolley 6 to transfer the fixture quick-change table 5 to the workbenches, saving effort and effectively improving transfer efficiency.

[0031] Working principle:

[0032] In the initial state of the fixture quick-change system of the body-in-white welding workstation, the three-axis positioner is in a static position, the first fixture locking mechanism and the second fixture locking mechanism are in an unlocked state, the cylinder of the fixture positioning mechanism is in a retracted state, and the pneumatic lifting device is in the lowest position.

[0033] When a fixture needs to be replaced, the fixture quick-change carriage transports the fixture quick-change table with the new fixture to the vicinity of the three-axis positioner. The pneumatic lifting device, controlled by the pneumatic valve island, is activated, raising the fixture quick-change table to a height close to the workbench. During the lifting process, the fixture quick-change table is accurately aligned with the workbench, guided by lugs and guide plates. When nearly in place, the cylinder piston rod of the fixture positioning mechanism extends, precisely positioning the fixture via the locating block. The locking rods of the first and second fixture locking mechanisms are then manually rotated into the fixture holes and secured with locking plates, firmly locking the fixture to the workbench.

[0034] After the fixture is positioned and locked, the pneumatic lift descends under the control of the pneumatic valve island, and the fixture quick-change carriage moves away. At this point, the three-axis positioner rotates from its first working position to the other end for body-in-white welding, while the second workbench repeats the above steps to continue the fixture quick-change process.

[0035] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A quick-change fixture system for a body-in-white welding workstation, characterized by: It includes a three-axis positioner, an ear plate, a guide plate, a first clamp locking mechanism, a second clamp locking mechanism, a clamp positioning mechanism, a pneumatic lifting device, a clamp quick-change platform and a clamp quick-change trolley. The three-axis positioner includes a rotary frame, a partition plate is fixedly installed at one-half of the rotary frame, and the first workbench and the second workbench are fixedly installed on both sides of the partition plate. The first workbench and the second workbench have the same structure, and ear plates are fixed at both ends of the short side of each workbench. A guide plate is fixed on the inner side of the ear plate. The upper surface of each workbench is close to the guide plate and is fixed with the first clamp locking mechanism, the clamp positioning mechanism and the second clamp locking mechanism from front to back in sequence. An air lifting device is fixed on the other side of the first clamp locking mechanism, the clamp positioning mechanism and the second clamp locking mechanism, which cooperates with the ball bearing of the clamp quick-change trolley to transfer the clamp quick-change platform to the workbench.

2. The quick-change fixture system for the body-in-white welding workstation according to claim 1, characterized in that: The three-axis positioner also includes a base, a servo motor, a gear, a gear plate and a rotating shaft. A gear plate is fixedly installed at the bottom center of the rotating frame, and the base is fixedly installed at the bottom of the gear plate. The base and the center of the gear plate are connected through a rotating shaft. A servo motor is fixed on one side of the rotating shaft. The output shaft of the servo motor is connected to the gear, and the gear is engaged with the gear plate.

3. The quick-change fixture system for the body-in-white welding workstation according to claim 1, characterized in that: The fixture positioning mechanism includes a cylinder and a positioning block. The cylinder is fixed on the lower surface of the workbench, and the positioning block is fixed on the upper surface of the workbench. The cylinder and the positioning block are arranged to overlap in the longitudinal direction to ensure that the piston rod of the cylinder passes through the workbench and the positioning block to position the fixture.

4. The quick-change fixture system for the body-in-white welding workstation according to claim 1, characterized in that: The first clamp locking mechanism includes a locking block, a locking rod, a locking plate and a locking shaft. One side of the locking block is open, and a locking plate is fixed with a bolt on the outer side of the opening of the locking block. The locking shaft passes through the locking block, and a locking rod is mounted on the locking shaft. The locking rod rotates along the locking shaft and is inserted into the clamp hole. The locking plate is fixed by a bolt to lock the clamp.

5. The quick-change fixture system for the body-in-white welding workstation according to claim 4, characterized in that: The first clamp locking mechanism and the second clamp locking mechanism have the same structure.

6. The quick-change fixture system for the body-in-white welding workstation according to claim 1, characterized in that: It also includes a pneumatic valve island, which is fixed on the lower surfaces of the first workbench and the second workbench and is electrically connected to the pneumatic lifting device.

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