Clamping assembly and welding equipment

Abstract

The utility model discloses a clamping assembly and welding equipment, and the clamping assembly comprises a clamping body which is provided with a clamping opening; the bead ejecting air chambers are formed in the clamping body and located on the two sides of the clamping opening; the air inlet hole is formed in the clamping body and is communicated with the top bead air chamber; the air cylinder top bead is telescopically arranged on the clamping body; and after driving gas enters the top bead air chamber from the air inlet hole, the cylinder top bead can be pushed to extend out of the top bead air chamber, and a to-be-clamped piece located at the clamping opening is fixed. The size of the air cylinder top bead can be reduced, so that the size of the clamping assembly can be reduced, and the welding requirement of a workpiece with a narrow welding space is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and more specifically relates to a clamping component and welding equipment. Background Art

[0002] Existing product welding fixtures are essential process equipment in the welding production process of large-scale factories. They can ensure the relative position of welding, and play an important role in improving labor productivity, reducing labor production intensity, and improving quality accuracy. At present, they are classified according to the power source and can be mainly divided into pneumatic fixtures, electric fixtures and hybrid power fixtures.

[0003] The existing welding fixtures on the market usually use purchased cylinder top ball standard parts. However, the air chamber of the cylinder top ball standard part is set inside the cylinder top ball, which makes the cylinder top ball standard part larger in size, and thus makes the welding fixture larger in size, which cannot meet the welding requirements of workpieces with narrow welding space. Utility Model Content

[0004] In view of the problem that the existing welding tongs have a relatively large clamp volume and cannot meet the welding requirements of workpieces with relatively narrow welding space, the purpose of the utility model is to provide a clamping assembly, including: a clamping body, which is provided with a clamping opening; a top ball air chamber, which is opened in the clamping body and is located on both sides of the clamping opening; an air inlet, which is opened in the clamping body and connected to the top ball air chamber; a cylinder top ball, which is telescopically arranged on the clamping body; the cylinder top ball is arranged in the top ball air chamber and can partially extend out of the top ball air chamber; wherein, when the driving gas enters the top ball air chamber from the air inlet, the cylinder top ball can be pushed to extend out of the top ball air chamber to clamp the part to be clamped located at the clamping opening.

[0005] Furthermore, the clamping assembly also includes: a return spring, which is arranged in the top ball air chamber and connected to the cylinder top ball; wherein, when the driving gas is turned off, the return spring can restore the cylinder top ball to its initial position.

[0006] Furthermore, the clamping assembly also includes: a flange, which is arranged at the rear end of the cylinder top ball; and a limiting portion, which is arranged at the opening of the top ball air chamber; wherein the flange cooperates with the limiting portion to limit the maximum length of the cylinder top ball extending out of the top ball air chamber.

[0007] Furthermore, the clamping assembly also includes: at least one first sealing installation position, which is opened on the peripheral side of the flange; and at least one first sealing ring, which is arranged at the first sealing installation position.

[0008] Furthermore, the clamping assembly also includes: an adjusting screw, which is arranged at the front end of the cylinder top ball and is used to adjust the tensioning force of the return spring; wherein the return spring is connected to the cylinder top ball through the adjusting screw.

[0009] Furthermore, the clamping assembly also includes: a spring mounting rod, which is arranged at one end of the top ball air chamber away from the clamping opening; wherein, one end of the return spring away from the cylinder top ball is fixed in the top ball air chamber through the spring mounting rod.

[0010] Furthermore, the clamping assembly further comprises: a rear cover, which is detachably covered on the rear end of the top bead air chamber; wherein the spring mounting rod is arranged on the rear cover.

[0011] Furthermore, the clamping assembly also includes: a rear cover, which is detachably covered on the rear end of the top bead air chamber; and a mounting slot, which is opened on the rear end of the top bead air chamber; wherein the spring mounting rod is mounted in the mounting slot.

[0012] Furthermore, the clamping assembly also includes: a second sealing installation position, which is arranged at the rear end of the top bead air chamber; and a second sealing ring, which is arranged at the second sealing installation position.

[0013] Furthermore, the return spring is a tension spring.

[0014] Furthermore, the present application provides a welding device, which uses any one of the clamping assemblies described above to clamp and fix the workpiece to be welded.

[0015] Technical effects and advantages of the utility model:

[0016] 1. By opening a top ball air chamber on the clamping body and telescopically setting the cylinder top ball in the top ball air chamber, the position of the air chamber can be adjusted from the cylinder top ball to the clamp. Compared with the cylinder top ball standard part in which the air chamber is set inside the cylinder top ball, the structural design of the present application can reduce the volume of the cylinder top ball, thereby reducing the volume of the clamping assembly, thereby meeting the welding requirements of workpieces with relatively narrow welding space.

[0017] 2. When the welding operation is completed, you only need to turn off the driving gas, and the cylinder top ball will be automatically retracted through the rebound force of the reset spring, so that the welding pipe clamp will be automatically unlocked, which is easier to operate and can improve the welding efficiency of the welding equipment.

[0018] 3. By arranging a seal between the flange and the inner wall of the top bead air chamber, the front end of the top bead air chamber can be sealed to prevent the driving gas from leaking from the front end of the top bead air chamber, thereby ensuring the air tightness of the top bead air chamber and the clamping effect of the clamping assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a clamping assembly provided in this application;

[0020] Figure 2 for Figure 1 A cross-sectional view of the clamping assembly;

[0021] Figure 3 It is a schematic diagram of the installation of the spring mounting rod and the second sealing ring;

[0022] Figure 4 It is an exploded schematic diagram of the spring mounting rod and the second sealing ring;

[0023] Figure 5 It is an exploded schematic diagram of the components of the cylinder top ball;

[0024] Figure 6 It is a schematic diagram of the structure of the cylinder top ball.

[0025] In the figure: 10, clamping body; 11, clamping opening; 13, top ball air chamber; 14, air inlet hole; 15, limit part; 16, mounting slot; 17, second sealing installation position; 18, second sealing ring; 20, cylinder top ball; 21, return spring; 22, adjusting screw; 23, spring mounting rod; 24, flange; 25, first sealing installation position; 26, first sealing ring; 30, back cover. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0027] See also Figure 1 , which is a schematic diagram of the structure of a clamping assembly provided by the utility model. Figures 1 to 6The clamping assembly, for example, includes: a clamping body 10, which is provided with a clamping opening 11; a top ball air chamber 13, which is opened in the clamping body 10 and is located on both sides of the clamping opening 11; an air inlet 14, which is opened in the clamping body 10 and connected to the top ball air chamber 13; a cylinder top ball 20, which is telescopically arranged on the clamping body 10; the cylinder top ball 20 is arranged in the top ball air chamber 13 and can partially extend out of the top ball air chamber 13; wherein, when the driving gas enters the top ball air chamber 13 from the air inlet 14, the cylinder top ball 20 can be pushed to extend out of the top ball air chamber 13 to clamp the part to be clamped at the clamping opening 11.

[0028] For example, a U-shaped or arc-shaped clamping opening 11 is provided in the middle of the clamping body 10, and the cylinder top ball 20 is telescopically arranged on both sides of the clamping opening 11; when the clamping assembly is working, the cylinder top ball 20 extends from the top ball air chamber 13 to achieve clamping and fixing of the welded part.

[0029] It can be understood that by opening the top ball air chamber 13 on the clamping body 10 and telescopically setting the cylinder top ball 20 in the top ball air chamber 13, the position of the air chamber can be adjusted from the cylinder top ball 20 to the clamp. Compared with the standard cylinder top ball 20 part in which the air chamber is set inside the cylinder top ball 20, the structural design of the present application can reduce the volume of the cylinder top ball 20, thereby reducing the volume of the clamping assembly, thereby meeting the welding requirements of workpieces with relatively narrow welding space.

[0030] Furthermore, the clamping assembly further includes: a return spring 21, which is arranged in the top ball air chamber 13 and connected to the cylinder top ball 20; wherein, when the driving gas is turned off, the return spring 21 can pull the cylinder top ball 20 back into the top ball air chamber 13. For example, when the welding operation is finished, it is only necessary to turn off the driving gas, that is, the cylinder top ball 20 is automatically retracted by the rebound force of the return spring 21, and the welding pipe clamp is automatically unlocked, which is easier to operate, thereby improving the welding efficiency of the welding equipment. For example, the return spring 21 is fixedly connected to the cylinder top ball 20.

[0031] Furthermore, the clamping assembly further includes: a flange 24, which is arranged at the rear end of the cylinder top ball 20; and a limiting portion 15, which is arranged at the opening of the top ball air chamber 13; wherein the flange 24 cooperates with the limiting portion 15 to limit the maximum length of the cylinder top ball 20 extending out of the top ball air chamber 13, and prevents the rear end of the cylinder top ball 20 from escaping from the top ball air chamber 13. For example, the limiting portion 15 is an annular limiting baffle plate arranged at the opening of the top ball air chamber 13, and the outer diameter of the limiting flange 24 is greater than the inner diameter of the opening of the annular limiting baffle plate.

[0032] Furthermore, the clamping assembly further includes: at least one first sealing installation position 25 , which is opened on the peripheral side of the flange 24 ; and at least one first sealing ring 26 , which is arranged at the first sealing installation position 25 .

[0033] It is understandable that when the cylinder top ball 20 is extended and retracted on the clamping body 10, the flange 24 slides along the inner wall of the top ball air chamber 13. Therefore, it is necessary to provide a seal between the flange 24 and the inner wall of the top ball air chamber 13 to prevent the driving gas from leaking out. By providing a seal between the flange 24 and the inner wall of the top ball air chamber 13, the front end of the top ball air chamber 13 can be sealed to prevent the driving gas from leaking from the front end of the top ball air chamber 13, thereby ensuring the airtightness of the top ball air chamber 13 and the clamping effect of the clamping assembly.

[0034] For example, two first sealing installation positions 25, that is, two annular grooves, are provided on the circumferential side of the flange 24; the first sealing ring 26 is fixedly arranged between the flange 24 and the inner wall of the top bead air chamber 13 through the annular groove. The number of the first sealing ring 26 and the first sealing installation position 25 is adjusted according to the specific use requirements and is not limited here.

[0035] Furthermore, the clamping assembly further includes: an adjusting screw, which is arranged at the front end of the cylinder top ball 20, and is used to adjust the tension of the return spring 21; wherein the return spring 21 is connected to the cylinder top ball 20 through the adjusting screw. For example, an internal threaded hole is arranged at the front end of the cylinder top ball 20, and the adjusting screw is installed to the front end of the cylinder top ball 20 through the internal threaded hole.

[0036] Furthermore, the clamping assembly also includes: a spring mounting rod 23, which is arranged at one end of the top ball air chamber 13 away from the clamping opening 11; wherein, one end of the return spring 21 away from the cylinder top ball 20 is fixed in the top ball air chamber 13 through the spring mounting rod 23.

[0037] In a specific embodiment, the first end of the return spring 21 is fixedly connected to the spring mounting rod 23, and the second end of the return spring 21 is fixedly connected to the adjusting screw; when the driving gas enters the top ball air chamber 13 from the air inlet hole 14, the driving gas pushes the cylinder top ball 20 to extend from the opening of the top ball air chamber 13, and the return spring 21 is stretched at this time; when the driving gas is turned off, the rebound force of the return spring 21 pulls the cylinder top ball 20 back to the top ball air chamber 13 to achieve reset.

[0038] Furthermore, the clamping assembly further includes: a rear cover 30, which is detachably covered on the rear end of the top ball air chamber 13; and a mounting slot 16, which is provided on the rear end of the top ball air chamber 13; wherein the spring mounting rod 23 is mounted in the mounting slot 16. For example, the spring mounting rod 23 can also be arranged on the rear cover 30, and the return spring 21 is directly connected to the rear cover 30.

[0039] In a specific embodiment, when assembling the clamping assembly, the cylinder top ball 20 is first fixedly connected to the first end of the return spring 21, and the second end of the return spring 21 is connected to the spring mounting rod 23, and then it is installed from the rear end of the top ball air chamber 13, so that the spring mounting rod 23 is clamped in the mounting groove 16, and then the rear cover 30 is covered on the rear end of the top ball air chamber 13, and the rear cover 30 is fixed by a threaded connector to complete the assembly.

[0040] Furthermore, the clamping assembly further includes: a second sealing installation position 17 , which is arranged at the rear end of the top bead air chamber 13 ; and a second sealing ring 18 , which is arranged at the second sealing installation position 17 .

[0041] It is understandable that, since the rear cover 30 is detachable, there is also a risk of the driving gas leaking from the connection between the rear cover 30 and the clamping assembly. By providing a second sealing installation position 17 at the rear end of the top bead air chamber 13 and providing a second sealing ring 18 at the second sealing installation position 17, the rear end of the top bead air chamber 13 can be sealed to prevent the driving gas from leaking from the rear end of the top bead air chamber 13, thereby ensuring the airtightness of the top bead air chamber 13 and the clamping effect of the clamping assembly.

[0042] Furthermore, the return spring 21 is a tension spring.

[0043] It can be understood that, compared with the compression spring, configuring the return spring 21 as a tension spring can improve the overall strength of the cylinder head ball 20 .

[0044] Furthermore, the present application provides a welding device, which uses any one of the clamping assemblies described above to clamp and fix the workpiece to be welded, and can achieve the same effect. To avoid repetition, it will not be described here.

[0045] In a specific embodiment, the welding device is a heat exchanger U-tube welding device, which can automatically weld the U-tube in a space where pipes are densely packed. In the description of the present utility model, it should be understood that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0046] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A clamping assembly, characterized in that: The clamping assembly comprises: A clamping body (10) is provided with a clamping opening (11); A top ball air chamber (13) is provided in the clamping body (10) and is located on both sides of the clamping opening (11); An air inlet (14) is provided in the clamping body (10) and communicated with the top ball air chamber (13); A cylinder top ball (20) is telescopically arranged on the clamping body (10); the cylinder top ball (20) is arranged in the top ball air chamber (13) and can partially extend out of the top ball air chamber (13); When the driving gas enters the top ball air chamber (13) from the air inlet hole (14), the cylinder top ball (20) can be pushed out from the top ball air chamber (13) to clamp the part to be clamped at the clamping opening (11).

2. The clamping assembly according to claim 1, characterized in that: The clamping assembly also includes: A return spring (21) is arranged in the top ball air chamber (13) and connected to the cylinder top ball (20); When the driving gas is turned off, the return spring (21) can restore the cylinder top ball (20) to an initial position.

3. The clamping assembly according to claim 1, characterized in that: The clamping assembly also includes: A flange (24) is arranged at the rear end of the cylinder top bead (20); A limiting portion (15) is arranged at the opening of the top bead air chamber (13); The flange (24) cooperates with the limiting portion (15) to limit the maximum length of the cylinder top ball (20) extending out of the top ball air chamber (13).

4. The clamping assembly according to claim 3, characterized in that: The clamping assembly also includes: At least one first sealing installation position (25) is provided on the peripheral side of the flange (24); At least one first sealing ring (26) is arranged at the first sealing installation position (25).

5. The clamping assembly according to claim 2, characterized in that: The clamping assembly also includes: An adjusting screw (22), arranged at the front end of the cylinder top ball (20), for adjusting the tension of the return spring (21); Wherein, the return spring (21) is connected to the cylinder top ball (20) via the adjusting screw (22).

6. The clamping assembly according to claim 2, characterized in that: The clamping assembly also includes: A spring mounting rod (23) is arranged at one end of the top ball air chamber (13) away from the clamping opening (11); Wherein, one end of the return spring (21) away from the cylinder top ball (20) is fixed in the top ball air chamber (13) via the spring mounting rod (23).

7. The clamping assembly according to claim 6, characterized in that The clamping assembly also includes: A rear cover (30) is detachably mounted on the rear end of the top bead air chamber (13); Wherein, the spring installation rod (23) is arranged on the rear cover (30).

8. The clamping assembly according to claim 6, characterized in that: The clamping assembly also includes: A rear cover (30) is detachably mounted on the rear end of the top bead air chamber (13); An installation slot (16) is provided at the rear end of the top bead air chamber (13); Wherein, the spring mounting rod (23) is clamped in the mounting clamping groove (16).

9. The clamping assembly according to claim 4, characterized in that: The clamping assembly also includes: A second sealing installation position (17) is arranged at the rear end of the top bead air chamber (13); A second sealing ring (18) is arranged at the second sealing installation position (17).

10. The clamping assembly according to claim 2, characterized in that: The return spring (21) is a tension spring.

11. A welding device, characterized in that: The welding equipment uses the clamping assembly according to any one of claims 1 to 10 to clamp and fix the workpiece to be welded.

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