Air pressure clamp for testing pressure of tubular shell type workpiece

Abstract

The utility model discloses a pressure test air pressure clamp for tubular shell type workpieces, which is capable of automatically clamping, high in clamping efficiency, high in clamping stability, good in test sealing performance and capable of improving test accuracy. The device comprises a bottom plate and a main air cylinder plate, and is characterized in that a rib plate and a side air cylinder plate are vertically installed on the two sides, close to the edge of a plate body, of the main air cylinder plate respectively, horizontal sealing structures are installed on the main air cylinder plate and the side air cylinder plate, and a supporting main plate is arranged close to the main air cylinder plate and the side air cylinder plate; a side position top plate is arranged at the top end of the side position air cylinder plate, and a vertical positioning structure is arranged between the side position top plate and the supporting main plate.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure testing fixtures, in particular to a pneumatic fixture for pressure testing of tubular shell-type workpieces. Background Art

[0002] A tubular shell workpiece is used in automobile engines. The workpiece structure is relatively complex and has multiple openings. There are high requirements for the sealing and pressure resistance of the workpiece. Therefore, this type of workpiece needs to be pressure tested. The existing pressure test fixtures are mostly manual fixtures. The workpiece clamping steps are cumbersome and the clamping efficiency is low. In addition, due to the uneven force on the workpiece, its clamping stability is low, which leads to reduced test accuracy. Utility Model Content

[0003] In view of the shortcomings of existing manual pressure test clamps, such as complicated workpiece clamping steps, low clamping efficiency and low clamping stability, which leads to reduced test accuracy, the utility model provides a pneumatic clamp for pressure testing of tubular shell workpieces, which can be automatically clamped, has high clamping efficiency, high clamping stability and good test sealing, thereby improving test accuracy.

[0004] The utility model provides the following technical solution: it includes a bottom plate and a main cylinder plate, and is characterized in that: rib plates and side cylinder plates are respectively vertically installed on both sides of the main cylinder plate near the edge of the plate body, a horizontal sealing structure is installed on the main cylinder plate and the side cylinder plate, a supporting main plate is arranged near the main cylinder plate and the side cylinder plate, a side top plate is arranged at the top of the side cylinder plate, and a vertical positioning structure is arranged between the side top plate and the supporting main plate.

[0005] It is further characterized by:

[0006] The horizontal sealing structure comprises a main sealing head and a side sealing head, the main cylinder plate and the side cylinder plate are respectively mounted with a main cylinder and a side cylinder, the cylinder rod head extending from the main cylinder passes through the main cylinder plate and is connected to the main sealing head, and the cylinder rod head extending from the side cylinder passes through the side cylinder plate and is connected to the side sealing head;

[0007] The vertical positioning structure comprises a mounting plate, a mounting plate is mounted on the protruding end of the cylinder rod of the top pressure cylinder mounted on the lower surface of the side top plate, a pressure plate is arranged on the open end of the mounting plate, the head of the pressure plate is arranged in a shape matching the arc surface of the workpiece, and behind the pressure plate, pressure columns are arranged in parallel on the open end of the mounting plate, and the pressure columns symmetrically press the skirt of the tail of the workpiece, and below the pressure plate, a limit plate is arranged on the surface of the support main board, and an inner groove matching the bottom of the workpiece is arranged on the side of the limit plate facing the main cylinder plate, and a center plug is arranged on the surface of the support main board at the center of the inner groove, and a positioning pin is arranged on the surface of the support main board near the innermost edge of the inner groove;

[0008] The supporting main board is installed on the bottom plate through four supporting columns.

[0009] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0010] The horizontal sealing structure is equipped with a main sealing head and a side sealing head that match the workpiece pipe mouth. Automatic and rapid sealing is achieved through the cylinder, which ensures the sealing efficiency, enhances the sealing performance, and improves the test accuracy.

[0011] The support main board and the limit plate are used to preliminarily position the workpiece. The limit plate is provided with a groove adapted to the bottom of the workpiece. The support main board is provided with a center plug and a positioning pin to firmly position the workpiece and improve the clamping stability.

[0012] The pressure blocks and pressure columns on the mounting plate in the vertical positioning structure will press the arc surface of the workpiece downwards, and the workpiece can be quickly clamped by the top pressure cylinder, which improves the clamping efficiency, further ensures the stability of the workpiece pressure test, and improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a working schematic diagram of the vertical positioning structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the vertical positioning structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the limit plate structure of the utility model;

[0018] Figure 6 This is a schematic diagram of the mounting plate structure of the utility model;

[0019] Figure 7This is a schematic diagram of the side cylinder plate structure of the utility model;

[0020] Figure 8 This is a schematic diagram of the main cylinder plate structure of the utility model;

[0021] Fig. 9 This is a schematic diagram of the horizontal sealing structure of the utility model;

[0022] Fig.10 This is a schematic diagram of the structure of the press block pressing a workpiece of the utility model;

[0023] Fig.11 This is the front view of the workpiece structure of this utility model;

[0024] Fig.12 This is the rear view of the workpiece structure of this utility model.

[0025] Description of reference numerals:

[0026] 1. Bottom plate; 2. Rib plate; 3. Main cylinder plate; 4. Side cylinder plate; 5. Mounting plate; 6. Pressure plate; 7. Pressure column; 8. Limit plate; 9. Support main board; 10. Main cylinder; 11. Top pressure cylinder; 12. Side cylinder; 13. Main sealing head; 14. Side sealing head; 15. Center plug; 16. Positioning pin; 17. Support column; 18. Side top plate. DETAILED DESCRIPTION

[0027] The utility model provides Figure 1-Figure 11 The pneumatic clamp for testing the pressure of a tubular shell workpiece shown in the figure comprises a bottom plate 1 and a main cylinder plate 3. Rib plates 2 and side cylinder plates 4 are vertically installed on both sides of the main cylinder plate 3 near the edge of the plate body. Horizontal sealing structures are installed on the main cylinder plate 3 and the side cylinder plate 4. Figure 7 , Figure 8 , Fig. 9 The horizontal sealing structure includes a main sealing head 13 and a side sealing head 14. The main cylinder plate 3 and the side cylinder plate 4 are respectively mounted with a main cylinder 10 and a side cylinder 12. The head of the cylinder rod extending from the main cylinder 10 penetrates the main cylinder plate 3 and is connected to the main sealing head 13. The head of the cylinder rod extending from the side cylinder 12 penetrates the side cylinder plate 4 and is connected to the side sealing head 14. The main sealing head 13 is adapted to the main through hole of the workpiece, and the side sealing head 14 is adapted to the side pipe hole of the workpiece.

[0028] A supporting main plate 9 is arranged near the main cylinder plate 3 and the side cylinder plate 4. The supporting main plate 9 is mounted on the bottom plate 1 through four supporting columns 17. A side top plate 18 is arranged at the top of the side cylinder plate 4. A vertical positioning structure is arranged between the side top plate 18 and the supporting main plate 9.

[0029] See Figure 4 , Figure 5 , Figure 6 The vertical positioning structure includes a mounting plate 5, a mounting plate 5 is mounted on the protruding end of the cylinder rod of the top pressure cylinder 11 mounted on the lower surface of the side top plate 18, and a pressing plate 6 is provided at the open end of the mounting plate 5, and the head of the pressing plate 6 is set to a shape that matches the arc surface of the workpiece (see Fig.10 ), behind the pressure plate 6, the open end of the mounting plate 5 is provided with pressure columns 7 in parallel, and the pressure columns 7 symmetrically press the tail skirt of the workpiece. Below the pressure plate 6, a limit plate 8 is provided on the surface of the support main board 9, and an inner groove matching the bottom of the workpiece is provided on the side of the limit plate 8 facing the main cylinder plate 3, and a center plug 15 is provided on the surface of the support main board 9 at the center of the inner groove, and a positioning pin 16 is provided on the surface of the support main board 9 near the innermost edge of the inner groove.

[0030] Working principle of this utility model:

[0031] Refer to the instruction manual Figure 1-5 When using the utility model, first place the center plug 15 and the positioning pin 16 that align the air inlet hole and the pin hole on the bottom surface of the workpiece on the supporting main board 9, and complete the workpiece positioning under the coordinated action of the limit plate 8, and then start the top pressure cylinder 11 to move vertically downward. At this time, the pressure block 6 and the pressure column 7 on the mounting plate 5 respectively press the arc surface and the skirt of the workpiece, and the positioning clamping is completed. Then start the main cylinder 10 and the side cylinder 12, and the main sealing head 13 and the side sealing head 14 respectively seal the pipe opening and the side pipe opening of the workpiece. Finally, the center plug 15 of the bottom plate of the workpiece is air-intake to complete the pressure test. The device improves the stability of clamping and the consistency of positioning, thereby improving the test accuracy and test efficiency.

Claims

1. A pneumatic clamp for pressure testing of tubular shell workpieces, comprising a base plate and a main cylinder plate, characterized in that: Rib plates and side cylinder plates are vertically installed on both sides of the main cylinder plate near the edge of the plate body, horizontal sealing structures are installed on the main cylinder plate and the side cylinder plate, supporting main boards are arranged near the main cylinder plate and the side cylinder plates, side top plates are arranged on the top of the side cylinder plates, and a vertical positioning structure is arranged between the side top plate and the supporting main board.

2. A pneumatic clamp for pressure testing of tubular shell workpieces according to claim 1, characterized in that: The horizontal sealing structure includes a main sealing head and a side sealing head, and the main cylinder plate and the side cylinder plate are respectively installed with a main cylinder and a side cylinder. The cylinder rod head extending from the main cylinder passes through the main cylinder plate and is connected to the main sealing head, and the cylinder rod head extending from the side cylinder passes through the side cylinder plate and is connected to the side sealing head.

3. A pneumatic clamp for pressure testing of tubular shell workpieces according to claim 1 or 2, characterized in that: The vertical positioning structure includes a mounting plate, a mounting plate is installed on the protruding end of the cylinder rod of the top pressure cylinder installed on the lower surface of the side top plate, a pressure plate is provided at the open end of the mounting plate, and the head of the pressure plate is set to a shape that matches the arc surface of the workpiece, and behind the pressure plate, pressure columns are installed in parallel at the open end of the mounting plate, and the pressure columns symmetrically press the tail skirt of the workpiece, and below the pressure plate, a limiting plate is provided on the surface of the supporting main board, and an inner groove that matches the bottom of the workpiece is provided on the side of the limiting plate facing the main cylinder plate, and a center plug is provided on the surface of the supporting main board at the center of the inner groove, and a positioning pin is provided on the surface of the supporting main board near the innermost edge of the inner groove.

4. A pneumatic clamp for pressure testing of tubular shell workpieces according to claim 3, characterized in that: The supporting main board is installed on the bottom plate through four supporting columns.

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