Automobile body-in-white welding fixture limiting block

Abstract

The utility model relates to the technical field of automobile accessory machining, and discloses an automobile body-in-white welding fixture limiting block which comprises a first connecting block, a support and a second connecting block, the support is in bolted connection with the first connecting block, the second connecting block is arranged below the first connecting block, a vertical groove is formed in the surface of the first connecting block in a penetrating mode, and the vertical groove is in bolted connection with the support. A rotating column is fixed to the inner side of the vertical groove through a bearing seat, and the bottom end of the rotating column is in bolted connection with a second connecting block; the directions of the first block body, the second block body and the third block body are changed by rotating the second connecting block so as to adapt to workpieces to be machined in different shapes, meanwhile, the second connecting block can drive the rotating column and the rotating disc to rotate, and after the block bodies are switched and selected, the screw rod is rotated to drive the circular plate and the movable column to descend, so that the workpieces to be machined are machined. And the second connecting block is inserted into the through hole to position the turntable, so that the second connecting block is prevented from rotating at will in the welding machining process.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically a limiting block for automotive body-in-white welding fixtures. Background Technology

[0002] The limiting block of the automotive body-in-white welding fixture is an indispensable and important component in the automotive manufacturing process. It plays a key role in positioning and limiting the workpiece during welding. There are various types of limiting blocks, and their structures and shapes vary depending on the application and function. Common types of limiting blocks include V-shaped limiting blocks, flat limiting blocks, and limiting blocks with square or curved inner walls. The limiting blocks are usually driven by cylinders or hydraulic cylinders. For example, when machining round tubes in automotive parts, a limiting block with a curved inner wall is needed, while when machining V-shaped steel, a V-shaped limiting block is needed to stably clamp the workpiece. However, when it is necessary to replace the limiting block, it is often necessary to remove it from the driving device by loosening the bolts, which is quite troublesome. Utility Model Content

[0003] The purpose of this utility model is to provide a limiting block for a welding fixture for automotive body-in-white. It integrates various limiting blocks with different inner wall shapes and can be rotated and switched. When the workpiece being welded changes, there is no need to disassemble or replace the limiting block.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a limiting block for a welding fixture of an automotive body-in-white, comprising a first connecting block and a bracket, wherein the bracket is bolted to the first connecting block, and further comprising:

[0005] The second connecting block is located below the first connecting block. A vertical groove is formed through the surface of the first connecting block. A rotating column is fixed to the inner side of the vertical groove by a bearing seat. The bottom end of the rotating column is bolted to the second connecting block. Both the first and second connecting blocks are triangular in design.

[0006] The first block, the second block, and the third block are respectively bolted to the three sides of the second connecting block. The top of the rotating column is bolted to a turntable, and the surface of the turntable is provided with a through hole.

[0007] A positioning mechanism used in conjunction with the through hole to position the turntable.

[0008] Preferably, the positioning mechanism includes a support rod, a threaded sleeve, and a screw. One end of the support rod is bolted to the first connecting block, and the end of the support rod away from the first connecting block is bolted to the threaded sleeve. The screw is threaded to the inner wall of the threaded sleeve. A circular plate is fixed to the bottom end of the screw by a bearing, and a movable column is provided through the surface of the circular plate.

[0009] Preferably, three sides of the threaded sleeve surface are also bolted with sliding sleeves, and the movable column is slidably connected to the inner wall of the sliding sleeve.

[0010] Preferably, a handwheel is bolted to the top of the screw to provide a force application point.

[0011] Preferably, the number of movable columns is three sets, arranged in a circular array around the center of the circular plate, and the number of through holes is three, arranged in a circular array around the center point of the turntable.

[0012] Preferably, the inner wall of the first block is square, the inner wall of the second block is V-shaped, and the inner wall of the third block is arc-shaped.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses the rotation of the second connecting block to change the orientation of the first, second, and third blocks, adapting to workpieces of different shapes. Simultaneously, the second connecting block can drive the rotating column and turntable to rotate. After the block switching and selection are completed, the rotating screw drives the circular plate and movable column to descend and insert into the through hole, positioning the turntable and preventing the second connecting block from rotating arbitrarily during the welding process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the first connecting block in this utility model;

[0017] Figure 3 This is a schematic diagram of the positioning mechanism in this utility model;

[0018] Figure 4 This is a schematic diagram of the threaded sleeve and its surrounding structure in this utility model;

[0019] Figure 5 This is a schematic diagram of the circular plate and its surface in this utility model.

[0020] In the diagram: 1. First connecting block; 2. Bracket; 3. Second connecting block; 4. First block; 5. Second block; 6. Third block; 7. Rotating column; 8. Turntable; 9. Through hole; 10. Vertical groove; 11. Positioning mechanism; 111. Support rod; 112. Threaded sleeve; 113. Screw; 114. Handwheel; 115. Circular plate; 116. Movable column; 117. Sliding sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 As shown, a limiting block for a welding fixture for an automotive body-in-white includes a first connecting block 1 and a bracket 2. The bracket 2 is bolted to the first connecting block 1 to support and fix the first connecting block 1. The bottom of the bracket 2 is fixed to other facilities or equipment. The limiting block also includes a positioning mechanism 11. A second connecting block 3 is provided below the first connecting block 1. A vertical groove 10 is formed through the surface of the first connecting block 1. A rotating column 7 is fixed to the inner side of the vertical groove 10 through a bearing seat. The bottom end of the rotating column 7 is bolted to the second connecting block 3. Both the first connecting block 1 and the second connecting block 3 are triangular in design. A first block 4, a second block 5, and a third block 6 are bolted to the three sides of the second connecting block 3, respectively. The inner wall of the first block 4 is square, the inner wall of the second block 5 is V-shaped, and the inner wall of the third block 6 is arc-shaped to accommodate workpieces with different surfaces. A turntable 8 is bolted to the top of the rotating column 7. A through hole 9 is formed through the surface of the turntable 8.

[0023] The positioning mechanism 11 includes a support rod 111, a threaded sleeve 112, and a screw 113. One end of the support rod 111 is bolted to the first connecting block 1, and the end of the support rod 111 away from the first connecting block 1 is bolted to the threaded sleeve 112. The screw 113 is threaded to the inner wall of the threaded sleeve 112. A handwheel 114 is bolted to the top of the screw 113 to provide a force point on the surface of the screw 113 for easy rotation. A circular plate 115 is fixed to the bottom of the screw 113 by a bearing, and the surface of the circular plate 115 penetrates... The circular plate 115 is provided with three sets of movable columns 116 arranged in a circular array around the center of the circular plate 115. The circular plate 115 has three through holes 9 arranged in a circular array around the center of the turntable 8. The three sides of the threaded sleeve 112 are also bolted with sliding sleeves 117, and the movable columns 116 are slidably connected to the inner wall of the sliding sleeves 117. This allows the circular plate 115 to slide up and down along the inner wall of the sliding sleeves 117 during the rising or falling process, thereby preventing the circular plate 115 from rotating with the screw 113.

[0024] During use, bracket 2 is bolted to the output shaft of the cylinder or hydraulic cylinder. When it is necessary to switch between different first blocks 4, second blocks 5, and third blocks 6, simply rotate the second connecting block 3. This will cause the first blocks 4, second blocks 5, and third blocks 6 to change their orientation. Stop rotating the second connecting block 3 when the required support block is on the side away from bracket 2. For example, when welding round pipes, the third block 6 with an arc-shaped inner wall needs to be on the side away from bracket 2. When welding V-shaped steel, the second block 5 with a V-shaped inner wall is needed. When welding square pipes, the third block 6 with a square inner wall is needed. After the first block 4 is adjusted, the screw 113 is rotated by turning the handwheel 114. Under the action of the thread on the inner wall of the threaded sleeve 112, the screw 113 drives the circular plate 115 and the movable column 116 to descend, allowing the movable column 116 to enter the inner wall of the through hole 9, positioning the turntable 8 and the rotating column 7, and positioning the orientation of different surfaces of the second connecting block 3, preventing the orientation of different support blocks from changing due to the rotation of the second connecting block 3 during the welding process. The clamp drives the limiting block assembly to move, allowing the first block 4, the second block 5 and the third block 6 to approach the clamped workpiece.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limiting block for a welding fixture for an automotive body-in-white, comprising a first connecting block (1) and a bracket (2), wherein the bracket (2) is bolted to the first connecting block (1), characterized in that, Also includes: The second connecting block (3) is located below the first connecting block (1). A vertical groove (10) is formed through the surface of the first connecting block (1). A rotating column (7) is fixed to the inner side of the vertical groove (10) by a bearing seat. The bottom end of the rotating column (7) is bolted to the second connecting block (3). Both the first connecting block (1) and the second connecting block (3) are triangular in design. The first block (4), the second block (5) and the third block (6) are respectively bolted to the three sides of the second connecting block (3). The top of the rotating column (7) is bolted with a turntable (8), and the surface of the turntable (8) is provided with a through hole (9). A positioning mechanism (11) for use in conjunction with the through hole (9) to position the turntable (8).

2. The limiting block for a welding fixture for an automotive body-in-white according to claim 1, characterized in that: The positioning mechanism (11) includes a support rod (111), a threaded sleeve (112), and a screw (113). One end of the support rod (111) is bolted to the first connecting block (1), and the end of the support rod (111) away from the first connecting block (1) is bolted to the threaded sleeve (112). The screw (113) is threaded to the inner wall of the threaded sleeve (112). The bottom end of the screw (113) is fixed with a circular plate (115) by a bearing. A movable column (116) is provided through the surface of the circular plate (115).

3. The limiting block for a welding fixture for an automotive body-in-white according to claim 2, characterized in that: The threaded sleeve (112) is also bolted with a sliding sleeve (117) on three sides of its surface, and the movable column (116) is slidably connected to the inner wall of the sliding sleeve (117).

4. A limiting block for a welding fixture for an automotive body-in-white according to claim 2, characterized in that: A handwheel (114) providing a force point is bolted to the top of the screw (113).

5. A limiting block for a welding fixture for an automotive body-in-white according to claim 2, characterized in that: The number of movable columns (116) is three sets, arranged in a ring array around the center of the circular plate (115), and the number of through holes (9) is three, arranged in a ring array around the center of the turntable (8).

6. The limiting block for a welding fixture for an automotive body-in-white according to claim 1, characterized in that: The inner wall of the first block (4) is square, the inner wall of the second block (5) is V-shaped, and the inner wall of the third block (6) is arc-shaped.

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