Pressing clamp for plates and plate tailor-welding tool

Abstract

The utility model relates to a clamp, in order to solve the problem of clamping and fixing a steel plate in the process of tailor-welding the steel plate on a tailor-welding tool, the utility model constructs a plate pressing clamp and a plate tailor-welding tool, the plate pressing clamp comprises a bottom plate, a pressing plate, a limiting plate and a supporting seat, and the limiting plate and the supporting seat are welded on the bottom plate; the length direction of the horizontal long hole is consistent with the length direction of the pressing plate, the top face of the wedge-shaped section is a wedge face, a pin shaft which is connected with the supporting base and parallel to the bottom plate is arranged in the horizontal long hole, a vertical long hole is formed in the limiting plate, the wedge-shaped section is inserted into the vertical long hole in a penetrating mode, and the wedge face of the wedge-shaped section makes contact with the top end of the vertical long hole. A pressing part protruding downwards is arranged at the end of the wedge-shaped section, the pressing part and the supporting base are located on the two sides of the limiting plate respectively, and the height of each position of the wedge face gradually increases from the pressing part to the horizontal long hole. According to the plate tailor-welding tool, the plate is tightly pressed on the workbench through the pressing clamp for the plate, operation is easy and convenient, the plate is firmly clamped, and cost is low.

Description

Technical Field

[0001] The utility model relates to a fixture, and more specifically, to a pressing fixture for plates and a plate welding fixture for workpieces. Background Art

[0002] Many structural parts of construction machinery are formed by welding multiple steel plates. For example, the web of the boom also needs to be formed by welding multiple steel plates before being welded into the boom. During the welding process of the web, due to the thermal expansion and contraction at the weld, deformation caused by temperature changes will occur during the welding process. Excessive deformation will result in the size of the welded web not meeting the product requirements.

[0003] To control the welding deformation of the web, some deformation control measures such as pneumatic fixtures are adopted on the plate welding fixture for the web to control the welding deformation, thereby improving the qualification rate of the size of the web after welding. However, the web of the working device of large construction machinery has a greater plate thickness, a deeper groove, and a larger welding amount, resulting in a large welding deformation. The pressure of the pneumatic fixture depends on the cylinder, and the pressure of the cylinder cannot meet the requirement of clamping the web during the welding of the large construction machinery web. In addition, the use of a pneumatic fixture involves equipment such as a cylinder air source, and its cost is high. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to solve the problem of clamping and fixing the steel plate during the steel plate welding process on the welding fixture, and to provide a pressing fixture for plates and a plate welding fixture for workpieces.

[0005] The technical solution for the utility model to achieve its purpose is: a pressing fixture for plates, which includes a bottom plate, a pressing plate, a limiting plate and a support seat welded on the bottom plate. A horizontal long hole with a length direction consistent with the length direction of the pressing plate and a wedge-shaped section with a wedge surface on the top surface are arranged on the pressing plate. A pin shaft connected to the support seat and parallel to the bottom plate is arranged in the horizontal long hole. A vertical long hole is arranged on the limiting plate. The wedge-shaped section is inserted into the vertical long hole and the wedge surface contacts the top end of the vertical long hole. A pressing part protruding downward is provided at the end of the pressing plate. The pressing part and the support seat are respectively located on both sides of the limiting plate. The height of each part of the wedge surface of the wedge-shaped section gradually increases towards the opposite end of the pressing part of the pressing plate.

[0006] In the pressing fixture for plates of the utility model, a limiting pin for preventing the pressing plate from withdrawing from the vertical long hole is arranged at the end of the pressing plate where the pressing part is provided.

[0007] In the pressing fixture for plates of the utility model, a round chamfer is provided at the end of the bottom surface of the pressing part away from the support seat.

[0008] In the pressing fixture for the plate of the present utility model, the support base includes two support plates welded to the bottom plate in parallel, the pressing plate is arranged between the two support plates, coaxial pin holes are provided at the upper parts of the two support plates, and both ends of the pin are correspondingly arranged in the pin holes of the two support plates.

[0009] In the pressing fixture for the plate of the present utility model, the vertical long hole is in clearance fit with both side surfaces of the pressing plate.

[0010] In the pressing fixture for the plate of the present utility model, when the pin is located at the end of the horizontal long hole adjacent to the pressing part, the ratio of the length of the wedge surface of the wedge-shaped section on the side of the limiting plate facing away from the support base to the length of the wedge surface of the wedge-shaped section on the other side of the limiting plate is 1:3.

[0011] In the pressing fixture for the plate of the present utility model, the top of the vertical long hole is an inclined surface or an arc surface, and the height of the top of the vertical long hole at the end facing the support base is higher than the height of the other end of the top of the vertical long hole.

[0012] In the pressing fixture for the plate of the present utility model, the width of the bottom plate at the end of the limiting plate facing away from the support base is greater than the width of the other end of the bottom plate.

[0013] In the pressing fixture for the plate of the present utility model, a plurality of mounting bolt holes are provided on the bottom plate, and the number of mounting bolt holes on the side of the limiting plate facing away from the support base is greater than the number of mounting bolt holes on the other side of the limiting plate on the bottom plate.

[0014] The technical solution for the present utility model to achieve its purpose is: a plate welding tooling, on which a plurality of the aforesaid pressing fixtures for plates are fixedly installed.

[0015] Compared with the prior art, in the plate welding tooling, the plate is pressed on the workbench by the pressing fixture for the plate in the present utility model, with simple and convenient operation, firm clamping of the plate and low cost. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the pressing fixture for the plate of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of the plate welding tooling in the present utility model.

[0018] Names and serial numbers of the parts in the figure:

[0019] Bottom plate 1, mounting bolt hole 11.

[0020] Limiting plate 2, vertical long hole 21.

[0021] Support base 3, support plate 31, pin 32

[0022] Pressure plate 4, wedge surface section 41, horizontal long hole 42, pressing part 43, round chamfer 431, limit pin 44, opposite end 45 of the pressing part, setting end 46 of the pressing part.

[0023] Pressing fixture 100 for plates, butt welding workbench 200, plate part 201. Specific implementation manner

[0024] The following describes the specific implementation scheme with reference to the accompanying drawings.

[0025] As Figure 1 shown, the pressing fixture for plates in this embodiment includes a bottom plate 1, a pressure plate 4, a limit plate 2 and a support seat 3 welded to the bottom plate 1. A horizontal long hole 42 with a length direction consistent with the length direction of the pressure plate and a wedge-shaped section 41 with a wedge-shaped top surface are provided on the pressure plate 4. A pin shaft 32 connected to the support seat 3 and parallel to the bottom plate 1 is provided in the horizontal long hole 42. A vertical long hole 21 is provided on the limit plate 2. The wedge-shaped section 41 is inserted into the vertical long hole 21 and the wedge surface contacts the top end of the vertical long hole 21. The end of the wedge-shaped section 41 has a downward protruding pressing part 43. The pressing part 43 and the support seat 3 are respectively located on both sides of the limit plate 2. The height of each part of the wedge surface of the wedge-shaped section gradually increases in the direction of the opposite end 45 of the pressing part of the pressure plate.

[0026] This embodiment also provides a plate part butt welding tooling. As Figure 2 shown, a plurality of the above-mentioned pressing fixtures 100 for plates are fixedly installed on the butt welding workbench 200. The pressing fixtures 100 for plates are fixed to the butt welding workbench 200 by welding or bolts. Among them, the bottom plate 1 is located outside the placement area of the butt welding plate part 201. The setting end of the pressing part 43 on the pressure plate 4 faces the placement area of the plate part 201. When butt welding the plate part 201, after the plate part 201 is placed, the pressure plate 4 is moved towards the plate part 201. The bottom surface of the pressing part 43 contacts the plate part 201. By knocking on the opposite end 45 of the pressing part on the pressure plate 4, the pressing part 43 presses the plate part 201 against the butt welding workbench 200 to fix the plate part 201 during the welding process. When releasing the pressing effect of the pressing fixture 100 for plates on the plate part 201, knock on the setting end 46 of the pressing part 43 provided on the pressure plate along the length direction of the pressure plate 4 to move the pressure plate away from the plate part.

[0027] Optionally, a limit pin 44 for placing the pressing plate 4 to exit from the vertical long hole 21 of the limit plate 2 is provided above the pressing part 43 of the pressing plate 4, that is, the limit pin 44 is arranged at the setting end 46 of the pressing part of the pressing plate 4. When releasing the pressing effect of the pressing plate 4 on the plate member 201, it is necessary to strike the setting end 46 of the pressing part on the pressing plate 4 so that the pressing part 43 of the pressing plate 4 moves towards the limit plate 2. The limit pin 44 is provided to prevent the pressing plate 4 from coming out of the vertical long hole 21 of the limit plate 2.

[0028] Optionally, the end of the bottom surface of the pressing part 43 away from the support base 3 has a round chamfer 431. When striking the opposite end 45 of the pressing part on the pressing plate 4 to make the pressing part 43 press the plate member 201, the pressing part 43 has a certain displacement relative to the plate member 201. The round chamfer 431 is provided to prevent the bottom end of the pressing part 43 from severely scraping the plate member 201 and causing the position of the plate member 201 to move.

[0029] Optionally, the support base 3 includes two support plates 31 welded to the bottom plate 1 in parallel. The pressing plate 4 is arranged between the two support plates 31. Coaxial pin holes are provided at the upper parts of the two support plates 31, and the two ends of the pin 32 are correspondingly arranged in the pin holes of the two support plates 31.

[0030] Optionally, the vertical long hole 21 has a clearance fit with the two side surfaces of the pressing plate 4. The two side walls of the vertical long hole 21 restrict the pressing plate 4 to prevent the pressing plate 4 from having a lateral deflection phenomenon.

[0031] Optionally, when the pin 32 is located at the end of the horizontal long hole 42 adjacent to the pressing part 43, the ratio of the length of the wedge surface on the side of the limit plate 2 facing away from the support base 3 to the length of the wedge surface on the other side of the limit plate 2 is 1:3.

[0032] Optionally, the top of the vertical long hole 21 is an inclined surface or an arc surface, and the height of the top of the vertical long hole 21 at the end facing the support base is higher than the height of the top of the vertical long hole at the end facing the pressing part 43. Making the top of the vertical long hole 21 an inclined surface or an arc surface can reduce the scraping wear between the wedge surface and the top of the vertical long hole 21 when the pressing plate 4 moves in the vertical long hole 21.

[0033] Optionally, the width of the bottom plate 1 at the end of the limit plate 2 facing away from the support base 3 is greater than the width of the other end of the bottom plate, so that more mounting bolt holes 11 can be provided at this end. Further, a plurality of mounting bolt holes 11 are provided on the bottom plate 1, and the number of mounting bolt holes 11 on the side of the bottom plate 1 where the limit plate 2 faces away from the support base 3 is greater than the number of mounting bolt holes 11 on the other side. Fixing the bottom plate 1 by providing the mounting bolt holes 11 on the side of the limit plate 2 facing away from the support base 3 can achieve a better fixing effect.

Claims

1. A plate clamping fixture, characterized in that: It includes a bottom plate, a pressure plate, a limiting plate welded to the bottom plate and a support seat; the pressure plate is provided with a horizontal long hole whose length direction is consistent with the length direction of the pressure plate and a wedge-shaped section whose top surface is a wedge surface; the horizontal long hole is provided with a pin connected to the support seat and parallel to the bottom plate; the limiting plate is provided with a vertical long hole, the wedge-shaped section is inserted in the vertical long hole and the wedge surface contacts the top of the vertical long hole; the end of the pressure plate is provided with a downwardly protruding clamping portion, the clamping portion and the support seat are respectively located on both sides of the limiting plate, and the height of the wedge surface of the wedge-shaped section gradually increases toward the opposite end of the clamping portion of the pressure plate.

2. The plate holding fixture according to claim 1, characterized in that: The pressing plate is provided with a limiting pin at the pressing portion setting end for preventing the pressing plate from withdrawing from the vertical long hole.

3. The plate holding fixture according to claim 1, characterized in that: The end of the bottom surface of the pressing portion away from the supporting seat has a round chamfer.

4. The plate holding fixture according to claim 1, characterized in that: The support seat includes two support plates welded in parallel to the base plate, the pressure plate is arranged between the two support plates, the upper parts of the two support plates are provided with coaxial pin holes, and the two ends of the pin are correspondingly arranged in the pin holes of the two support plates.

5. The plate holding fixture according to claim 1, characterized in that: The vertical long hole is clearance-matched with the two side surfaces of the pressing plate.

6. The plate holding fixture according to claim 1, characterized in that: When the pin shaft is located in the horizontal long hole adjacent to the end of the clamping portion, the ratio of the length of the wedge surface of the wedge section on the side of the limiting plate facing away from the support seat to the length of the wedge surface of the wedge section on the other side of the limiting plate is 1 to 3.

7. The plate holding fixture according to claim 1, characterized in that: The top of the vertical long hole is an inclined surface or an arc-shaped surface, and the height of the top of the vertical long hole toward one end of the support seat is higher than the height of the other end of the top of the vertical long hole.

8. The plate holding fixture according to claim 1, characterized in that: The width of the bottom plate at one end of the limiting plate facing away from the support seat is greater than the width of the other end of the bottom plate.

9. The plate holding fixture according to claim 1, characterized in that: The bottom plate is provided with a plurality of mounting bolt holes, and the number of the mounting bolt holes on the side of the limiting plate facing away from the support seat is greater than the number of the mounting bolt holes on the bottom plate on the other side of the limiting plate.

10. A plate welding tool, characterized in that: A plurality of plate clamping fixtures according to any one of claims 1 to 9 are fixedly mounted on the tailor-made welding workbench.

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