Side frame rear section welding clamp

Abstract

The utility model discloses a side frame rear section welding clamp which is characterized in that the side frame rear section welding clamp comprises a clamp bottom plate, a supporting seat, a groove bottom positioning seat and an end positioning seat are arranged on the clamp bottom plate, a side edge positioning block is arranged on the supporting seat, a rhombic positioning pin and a cylindrical positioning pin are arranged on the groove bottom positioning seat, and the end positioning seat is arranged on the rhombic positioning pin. An end positioning seat is arranged on the clamp bottom plate, an end positioning block is arranged on the end positioning seat, a lifting table is arranged on the clamp bottom plate, a hook positioning seat is arranged on the lifting table, a hook pressing block is correspondingly arranged above the hook positioning seat, and a side pressing mechanism is arranged on the clamp bottom plate and used for pressing a workpiece on the groove bottom positioning seat. The clamping device has the advantages of being simple in structure, convenient to clamp, high in hook positioning accuracy, good in supporting effect on the rear section of the side frame and capable of guaranteeing that deformation is not prone to occurring in the clamping and welding process, thereby improving welding quality, guaranteeing high product consistency and being suitable for automatic welding of a robot.

Description

Technical Field

[0001] The utility model relates to the field of welding fixtures, in particular to a welding fixture for the rear section of a side frame. Background Art

[0002] The rear section of the automobile side frame is a U-shaped groove structure, and multiple metal hooks need to be welded on the outside of the groove. However, the U-shaped groove is a thin-walled part, and the metal hook is a curved structure in space. Therefore, the positioning accuracy of the existing welding fixture is not high, and it is easy to cause deformation of the rear section of the side frame during clamping, which will affect the quality of the welded product and cause a high scrap rate. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a side frame rear section welding fixture, which has a simple structure, high positioning accuracy and good clamping stability.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A welding fixture for the rear section of a side frame, characterized in that it includes a fixture bottom plate, on which a support seat, a groove bottom positioning seat, and an end positioning seat are arranged, wherein the support seat is provided with a side positioning block, the groove bottom positioning seat has a diamond positioning pin and a cylindrical positioning pin, the end positioning seat is provided with an end positioning block, a lifting platform is provided on the fixture bottom plate, a hook positioning seat is provided on the lifting platform, a hook pressure block is correspondingly provided above the hook positioning seat, and a side pressure mechanism is provided on the fixture bottom plate for pressing the workpiece tightly against the groove bottom positioning seat.

[0006] Furthermore, the side pressure mechanism includes a side pressure cylinder, which is arranged on the fixture bottom plate through a cylinder mounting seat, a side pressure block is arranged at the front end of the cylinder rod of the side pressure cylinder, and an auxiliary support block is welded to the front end of the cylinder rod of the side pressure cylinder.

[0007] Furthermore, the side pressure cylinder is a guide rod cylinder, and a guide rod driving handle is arranged at the rear end of the side pressure cylinder.

[0008] Furthermore, the lifting platform is arranged on a lifting cylinder, and the lifting cylinder is mounted on a fixture bottom plate through an adapter, and a limiting hook for limiting the lifting platform is arranged on the adapter.

[0009] Furthermore, a lever pressing cylinder for driving the hook pressing block is arranged on the lifting platform.

[0010] Furthermore, a guide rod is provided at the bottom of the lifting platform, and a guide seat cooperating with the guide rod is provided on the fixture bottom plate.

[0011] The beneficial effects of the utility model include: simple structure, convenient clamping, high positioning accuracy of the hook, and good support effect on the rear section of the side frame, ensuring that deformation is not easy to occur during clamping and welding, thereby improving welding quality, ensuring high product consistency, and being suitable for robot automatic welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0015] A kind of Figure 1-2 The side frame rear section welding fixture shown includes a fixture bottom plate 1, on which a support seat 2, a groove bottom positioning seat 4, and an end positioning seat 7 are arranged, wherein a side positioning block 3 is arranged on the support seat 2, and the top surface of the side positioning block 3 is an inclined surface, which is adapted to the outer side surface of the side frame rear section, so that when the side frame rear section is supported on the side positioning block 3, its bottom surface remains vertical. The groove bottom positioning seat 4 has a vertical positioning surface, and the groove bottom positioning seat 4 has a diamond positioning pin 5 and a cylindrical positioning pin 6, and the side frame rear section is positioned on the diamond positioning pin 5 and the cylindrical positioning pin 6 through the positioning holes at the bottom. An end positioning block 8 is arranged on the end positioning seat 7 for positioning the end of the side frame rear section. A lifting platform 9 is arranged on the fixture bottom plate 1, and a hook positioning seat 10 is arranged on the lifting platform 9 for positioning the hook on the side frame rear section. A hook pressing block 11 is correspondingly arranged above the hook positioning seat 10. A side pressure mechanism is provided on the fixture bottom plate 1 to press the workpiece tightly onto the positioning seat 4 at the bottom of the groove.

[0016] The side pressure mechanism includes a side pressure cylinder 12, which is arranged on the fixture bottom plate 1 through a cylinder mounting seat 16. A side pressure block 13 is arranged at the front end of the cylinder rod of the side pressure cylinder 12, and an auxiliary support block 14 is welded to the front end of the cylinder rod of the side pressure cylinder 12. The auxiliary support block 14 is supported on the upper inner wall of the rear section of the side frame, and the top surface of the auxiliary support block 14 is an inclined surface. The side pressure cylinder 12 is a guide rod cylinder, and a guide rod driving handle 15 is arranged at the rear end of the side pressure cylinder 12. The handle 15 can drive the front end of the cylinder rod of the cylinder to retreat.

[0017] The lifting platform 9 in this embodiment is arranged on the lifting cylinder 17, and the lifting cylinder 17 is installed on the fixture bottom plate 1 through the adapter seat, and the adapter seat is provided with a limit hook 18 for limiting the lifting platform 9. The hook positioning seat 10 is arranged above the side of the lifting platform 9 close to the groove bottom positioning seat 4. The lifting platform 9 is provided with a lever pressing cylinder 19 for driving the hook pressing block 11. When the hook is positioned, the lifting platform 9 rises, and the hook is placed on the hook positioning seat 10, and is pressed by the hook pressing block 11. When welding, the lifting platform 9 descends so that the hook contacts the rear section of the side frame.

[0018] In order to make the lifting platform lift more smoothly, a guide rod 20 is provided at the bottom of the lifting platform 9, and a guide seat 21 cooperating with the guide rod 20 is provided on the fixture bottom plate 1.

[0019] Three hand-operated valves 22 are also provided on the fixture bottom plate 1 for controlling the side pressure cylinder 12 , the lifting cylinder 17 , and the lever clamping cylinder 19 respectively.

[0020] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A side frame rear section welding fixture, characterized in that: The invention comprises a fixture base plate (1), wherein the fixture base plate (1) is provided with a support seat (2), a groove bottom positioning seat (4), and an end positioning seat (7), wherein the support seat (2) is provided with a side positioning block (3), the groove bottom positioning seat (4) is provided with a diamond positioning pin (5) and a cylindrical positioning pin (6), the end positioning seat (7) is provided with an end positioning block (8), the fixture base plate (1) is provided with a lifting platform (9), the lifting platform (9) is provided with a hook positioning seat (10), a hook pressing block (11) is correspondingly provided above the hook positioning seat (10), and the fixture base plate (1) is provided with a side pressing mechanism for pressing a workpiece onto the groove bottom positioning seat (4).

2. A side frame rear section welding fixture according to claim 1, characterized in that: The side pressure mechanism comprises a side pressure cylinder (12), the side pressure cylinder (12) is arranged on the fixture bottom plate (1) through a cylinder mounting seat (16), a side pressure block (13) is arranged at the front end of the cylinder rod of the side pressure cylinder (12), and an auxiliary support block (14) is welded to the front end of the cylinder rod of the side pressure cylinder (12).

3. A side frame rear section welding fixture according to claim 2, characterized in that: The side pressure cylinder (12) is a guide rod cylinder, and a guide rod driving handle (15) is arranged at the rear end of the side pressure cylinder (12).

4. The side frame rear section welding fixture according to claim 1, characterized in that: The lifting platform (9) is arranged on a lifting cylinder (17), and the lifting cylinder (17) is installed on the fixture bottom plate (1) through an adapter seat, and a limit hook (18) for limiting the lifting platform (9) is arranged on the adapter seat.

5. The side frame rear section welding fixture according to claim 4, characterized in that: The lifting platform (9) is provided with a lever pressing cylinder (19) for driving the hook pressing block (11).

6. The side frame rear section welding fixture according to claim 4, characterized in that: A guide rod (20) is arranged at the bottom of the lifting platform (9), and a guide seat (21) matched with the guide rod (20) is arranged on the fixture bottom plate (1).

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