Clamping device for hood side plate welding

Abstract

The utility model discloses a clamping device for hood side plate welding, and relates to the technical field of clamp tools, the clamping device comprises a supporting platform and a plurality of clamp units, the supporting platform is provided with a plurality of supporting seats, and the supporting seats are used for supporting the clamp units, hood side plates and a fixing support; the clamp unit comprises a power cylinder and a pressing arm, the pressing arm comprises a hood side plate pressing arm and a fixed support pressing arm, and the fixed support pressing arm is fixedly connected with one side of the hood side plate pressing arm; the hood side plate pressing arm is connected with the supporting seat through a rotating shaft, and one end of the hood side plate pressing arm is hinged to the power cylinder; the supporting seat is further provided with a positioning mechanism used for limiting the hood side plate and the fixing support. Therefore, through the improvement of the clamp, the requirement for accurately clamping the hood side plate is met, installation and fixation are simplified, and the welding quality of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures and tools, in particular to a clamping device used for welding a hood side plate. Background Art

[0002] The hood of a tractor is generally formed by welding, especially the fixed bracket used to connect the hood to the engine. The positions of the multiple fixed brackets are different. The hood side panel generally has two fixed brackets, and a locking pin is installed on the other side relative to the fixed bracket to facilitate the installation and opening of the hood side panel.

[0003] The traditional welding process is to place multiple fixed brackets or locking pins in a certain position, and after manual measurement, clamp them with a fixture and finally fix them by welding. Since the position of each fixed bracket is measured manually, there are measurement errors. After welding, it is easy for the hood side panel to be unable to be installed. Especially in mass production, the robot arm is used to drive the welding gun, and the movement trajectory of the welding gun is fixed. Due to the inaccurate fixed position of the welded parts, the scrap rate will increase. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the purpose of the utility model is to provide a clamping device for welding the hood side panels, which can meet the needs of accurately clamping the workpiece, simplify installation and fixation, and improve the welding quality of the product.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a clamping device for welding hood side panels, comprising a supporting platform and a plurality of clamping units, wherein the supporting platform is provided with a plurality of supporting seats, and the supporting seats are used to support the clamping units, the hood side panels and the fixed brackets; the clamping unit comprises a clamping cylinder and a pressure arm, and the pressure arm comprises a hood side panel pressure arm and a fixed bracket pressure arm, and the fixed bracket pressure arm is fixedly arranged on one side of the hood side panel pressure arm; the hood side panel pressure arm is connected to the supporting seat via a connecting shaft, and one end of the hood side panel pressure arm is hinged to the clamping cylinder; a positioning mechanism for limiting the positions of the hood side panel and the fixed bracket is also provided on the supporting seat.

[0006] Preferably, the positioning mechanism comprises a side panel positioning pin and a fixing bracket positioning pin; the side panel positioning pin is close to one of the hood side panel pressure arms, and the hood side panel is provided with a side panel positioning hole adapted to the side panel positioning pin;

[0007] The fixing bracket is located below the fixing bracket pressure arm, and the fixing bracket is provided with a fixing bracket positioning hole adapted to the fixing bracket positioning pin.

[0008] Preferably, the hood side panel is provided with a locking pin, and the support seat is provided with a positioning groove for supporting the locking pin.

[0009] Preferably, there is one side plate positioning pin, two positioning grooves are provided, and two fixing bracket positioning pins are provided.

[0010] Preferably, the two fixing bracket positioning pins and the two positioning grooves are respectively oppositely distributed on both sides of the length direction of the hood side plate.

[0011] Preferably, the positioning groove is V-shaped.

[0012] Preferably, a limit stop block is fixedly arranged at the end of the positioning groove.

[0013] Preferably, positioning cylinders are respectively connected to the bottoms of the side plate positioning pin and the fixing bracket positioning pin.

[0014] Preferably, both the clamping cylinder and the positioning cylinder are telescopic air cylinders.

[0015] After adopting the above technical solution, the beneficial technical effects obtained by the present utility model are as follows:

[0016] 1. Since a fixture unit is arranged on the support platform, and a plurality of support seats are arranged for supporting the hood side plate and the fixing bracket of the engine hood, the clamping cylinder in the fixture unit provides clamping power to clamp and fix the hood side plate and the fixing bracket to meet the welding requirements. When placing the hood side plate and the fixing bracket, positioning is achieved through the positioning mechanism, so that manual measurement is no longer required, the production requirements of the assembly line can be met, the automation degree is higher, and the positioning will be more accurate. During the above process of placing the hood side plate and the fixing bracket, as well as during the process of the fixture unit clamping and fixing, no additional measurement is required, measurement errors can be avoided, especially suitable for the rapid fixing of a type of protective cover, the installation efficiency can be greatly improved, and the rejection rate can be reduced.

[0017] 2. Since a side plate positioning pin for positioning the hood side plate is provided, and the fixing bracket and the lock pin to be welded are respectively positioned, over-positioning can be avoided, and a limit stop block is also arranged on one side of the positioning groove, which can ensure the consistency of the length of the lock pin placed each time, and further ensure that the model of the hood side plate to be clamped and welded each time is correct, avoiding placement errors by the operator.

[0018] 3. Since positioning cylinders are respectively arranged at the bottoms of the side plate positioning pin and the fixing bracket positioning pin, they extend when placing the hood side plate and the fixing bracket, which is convenient for placement. After processing, the side plate positioning pin and the fixing bracket positioning pin retract, which is convenient for taking the workpiece and avoiding interference. Therefore, the efficiency is higher, especially suitable for thin-walled workpieces such as the hood side plate. Even if the hood side plate is deformed to a certain extent after welding, it will not affect the grasping and moving operations of the manipulator. Description of the Drawings

[0019] Figure 1 is a reference view of the usage state of the clamping device for welding the side plate of the machine hood in the present utility model;

[0020] Figure 2 is Figure 1 the enlarged view of part A in

[0021] Figure 3 is Figure 1 the enlarged view of part B in

[0022] Figure 4 is a reference top view after hiding the side plate of the machine hood and the fixed bracket;

[0023] Figure 5 is Figure 4 the reference three - dimensional view of one of the angles;

[0024] Figure 6 is Figure 4 the reference three - dimensional view of another angle of

[0025] Figure 7 is a reference open state view of one of the fixture units;

[0026] Figure 8 is Figure 7 the reference closed state view of the fixture unit in

[0027] In the figure,

[0028] 1. Support platform;

[0029] 2. Support base; 21. Positioning groove; 22. Limit stop; 23. Positioning cylinder; 24. Side plate positioning pin;

[0030] 25. Fixed bracket positioning pin;

[0031] 3. Fixture unit; 31. Clamping cylinder; 32. Machine hood side plate pressing arm; 33. Fixed bracket pressing arm; 34. Connecting shaft;

[0032] 4. Fixed bracket; 5. Machine hood side plate; 51. Locking pin. Detailed implementation manners

[0033] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0034] See Figures 1-3, the present utility model provides a clamping device for welding the side plate 5 of the engine hood, which includes a support platform 1 and several fixture units 3. There are multiple support seats 2 on the support platform 1, and the support seats 2 are used to support the fixture units 3, the side plate 5 of the engine hood, and the fixed bracket 4; the fixture unit 3 includes a clamping cylinder 31 and a pressing arm. The pressing arm includes a side plate pressing arm 32 of the engine hood and a fixed bracket pressing arm 33. The fixed bracket pressing arm 33 is fixedly arranged on one side of the side plate pressing arm 32 of the engine hood; the side plate pressing arm 32 of the engine hood is connected to the support seat 2 through a connecting shaft 34, and one end of the side plate pressing arm 32 of the engine hood is hinged to the clamping cylinder 31; there is also a positioning mechanism on the support seat 2 for defining the side plate 5 of the engine hood and the fixed bracket 4. For the thin-plate-shaped side plate 5 of the engine hood, generally, it is first positioned by the side plate positioning pin 24, and then according to the predetermined position, the fixed bracket 4 is positioned and fixed with the fixed bracket positioning pin 25. During actual use, since the side plate 5 of the engine hood is generally thin-plate-shaped, several adjusting blocks (not shown in the figure) are also provided inside the fixture unit 3. After the edge of the side plate 5 of the engine hood is limited, the clamping cylinder 31 provides power. The side plate pressing arm 32 of the engine hood serves as the main pressing arm and rotates around the connecting shaft 34 to fix the side plate 5 of the engine hood through the side plate pressing arm 32 and fix the fixed bracket 4 through the fixed bracket pressing arm 33.

[0035] The positioning mechanism includes a side plate positioning pin 24 and a fixed bracket positioning pin 25; the side plate positioning pin 24 is close to one of the side plate pressing arms 32 of the engine hood, and the side plate 5 of the engine hood is provided with a side plate positioning hole adapted to the side plate positioning pin 24; the fixed bracket 4 is located below the fixed bracket pressing arm 33, and the fixed bracket 4 is provided with a fixed bracket positioning hole adapted to the fixed bracket positioning pin 25. The side plate 5 of the engine hood is relatively large and is fixed by the side plate pressing arm 32 of the engine hood, and the fixed bracket 4 is fixed by the fixed bracket pressing arm 33.

[0036] See Figures 4-8 , the side plate 5 of the engine hood is provided with a locking pin 51, and the support seat 2 is provided with a positioning groove 21 for supporting the locking pin 51. The present utility model has one side plate positioning pin 24, two positioning grooves 21 are provided, and two fixed bracket positioning pins 25 are provided. The two fixed bracket positioning pins 25 and the two positioning grooves 21 of the present utility model are respectively distributed oppositely on both sides of the length direction of the side plate 5 of the engine hood. The side plate 5 of the tractor engine hood is provided with a locking pin 51 for supporting rotation, and the locking pin 51 is also welded and fixed to the side plate 5 of the engine hood. During positioning, the locking pin 51 is generally placed in the positioning groove 21 and fixed by the fixed bracket pressing arm 33. And if the length of the locking pin 51 is relatively long, without replacing the limiting baffle, the side wall of the positioning groove 21 and the limiting block 22 can play a limiting role.

[0037] The positioning groove 21 of the present utility model is V-shaped. A limit stop 22 is fixedly arranged at the end of the positioning groove 21. The V-shaped positioning groove 21 is applicable to cylindrical objects. Cooperating with the pressing arm can avoid over-positioning. At the same time, the positioning groove 21 can also play a supporting role for the locking pin 51. The limit stop 22 at the end of the positioning groove 21 is generally fixedly connected, or can also be fixedly connected through a rotating shaft. When an operator places the side plate 5 of the machine cover that is not of this model, due to the different lengths of the locking pins 51, it cannot be smoothly inserted into the positioning groove 21. Therefore, the positioning groove 21 cooperating with the limit stop 22 can play an insurance role, that is, only the side plate 5 of the machine cover and the locking pin 51 of this model can meet the fixation requirements. If the models do not match, they cannot be smoothly clamped. During actual use, a groove can be arranged on one side of the limit stop 22, and the limit stop 22 is rotated by a certain angle. Cooperating with the side wall of the positioning groove 21, it can be used to clamp the locking pin 51 with a longer length. The principle is the same as the above and will not be elaborated. Refer to Figure 3 , in this drawing, the locking pin 51 is located outside the positioning groove 21, while the locking pin 51 on the opposite side is placed in the positioning groove 21.

[0038] The clamping cylinder 31 and the positioning cylinder 23 of the present utility model are both telescopic air cylinders. Telescopic air cylinders have a relatively wide application in fixtures and are mature prior arts. Generally, they are directly obtained by purchasing and installed at appropriate positions according to needs to meet the telescopic requirements of clamping and positioning pins.

[0039] Positioning cylinders 23 are respectively connected to the bottoms of the side plate positioning pin 24 and the fixed bracket positioning pin 25 of the present utility model. After the thin plate type side plate 5 of the machine cover is welded, deformation is inevitable. At this time, by driving the retraction of the side plate positioning pin 24 and the fixed bracket positioning pin 25 respectively through the positioning cylinder 23, it is convenient to take the workpiece and avoid interference.

[0040] Certainly, the present utility model can also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present utility model.

Claims

1. A clamping device for welding a hood side panel, characterized in that: It includes a support platform and a plurality of fixture units, wherein the support platform is provided with a plurality of support seats, and the support seats are used to support the fixture units, the hood side panels and the fixing brackets; The clamp unit includes a clamping cylinder and a pressing arm, the pressing arm includes a hood side panel pressing arm and a fixed bracket pressing arm, the fixed bracket pressing arm is fixedly arranged on one side of the hood side panel pressing arm; the hood side panel pressing arm is connected to the support seat through a connecting shaft, and one end of the hood side panel pressing arm is hinged to the clamping cylinder; The support seat is also provided with a positioning mechanism for limiting the position of the hood side panel and the fixing bracket.

2. The clamping device for welding the hood side panel according to claim 1, characterized in that: The positioning mechanism includes a side panel positioning pin and a fixing bracket positioning pin; the side panel positioning pin is close to one of the hood side panel pressure arms, and the hood side panel is provided with a side panel positioning hole adapted to the side panel positioning pin; The fixing bracket is located below the fixing bracket pressure arm, and the fixing bracket is provided with a fixing bracket positioning hole adapted to the fixing bracket positioning pin.

3. The clamping device for welding the hood side panel according to claim 2, characterized in that: The hood side plate is provided with a locking pin, and the support seat is provided with a positioning groove for supporting the locking pin.

4. The clamping device for welding the hood side panel according to claim 3, characterized in that: The side plate locating pin is provided with one, the locating grooves are provided with two, and the fixing bracket locating pins are provided at two locations.

5. The clamping device for welding the hood side panel according to claim 4, characterized in that: The two fixing bracket locating pins and the two locating grooves are respectively and relatively distributed on both sides of the length direction of the hood side plate.

6. The clamping device for welding the hood side panel according to claim 3, characterized in that: The positioning groove is V-shaped.

7. The clamping device for welding the hood side panel according to claim 3, characterized in that: A limit stopper is fixedly arranged at the end of the positioning groove.

8. The clamping device for welding the hood side panel according to claim 2, characterized in that: The bottoms of the side plate locating pins and the fixing bracket locating pins are respectively connected with locating cylinders.

9. The clamping device for welding the hood side panel according to claim 8, characterized in that: The clamping cylinder and the positioning cylinder are both telescopic cylinders.

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