Riveting bush die

Abstract

The utility model belongs to the technical field of bushing riveting, and particularly relates to a bushing riveting die which comprises a stamping block, a supporting assembly is arranged below the stamping block, the supporting assembly comprises a supporting pipe, a supporting rod and a positioning pin, a lubricating structure is arranged in the supporting rod and lubricates the interior of the supporting pipe, a fastening structure is arranged in the positioning pin, and the fastening structure is connected with the supporting pipe. The lubricating structure comprises a lubricating cavity, the lubricating cavity is formed in the supporting rod, a movable plug is slidably connected into the lubricating cavity, and an oil adding cavity and an oil outlet cavity are formed in the left side and the right side of the lubricating cavity correspondingly. And the interior of the supporting pipe can be lubricated through the arranged lubricating structure, friction generated between the supporting pipe and the positioning pin is reduced, the phenomenon that the positioning pin shakes or inclines in the vertical movement process is avoided, and therefore the position of the lining can be stabilized and fixed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of riveting bushings, in particular to a riveting bushing die. BACKGROUND

[0002] The riveting bushing die is a die for riveting a bushing to a specific part.

[0003] In the prior art, a Chinese patent discloses a stamping part bottom hole riveting bushing stamping device (authorized publication number CN215941277U), which can position the bushing through the bushing positioning part of the bushing positioning pin. Due to the gap fit between the bushing positioning part and the inner wall of the through hole, the bushing position does not move during the stamping process, so that the pressure exerted by the upper stamping block on the bushing is balanced, ensuring the quality and appearance of the bushing riveting.

[0004] However, the positioning pin in the above patent document will rub against the inner wall of the fixed shell during movement. After a long time of rubbing between the positioning pin and the inner wall of the fixed shell, the positioning pin or the inner wall of the fixed shell will be worn, so that the positioning pin cannot maintain vertical up and down movement, which will cause the positioning pin to be unable to stably limit the position of the bushing. Content of the utility model

[0005] The purpose of the present application is to overcome the shortcomings of the prior art. A riveting bushing die is designed by adopting the mode of supporting assembly cooperating with fastening structure. The bushing in the connecting hole is subjected to stamping treatment by the stamping block, so that the bushing is riveted in the connecting hole. The problem that the positioning pin in the tool for riveting the bushing cannot maintain vertical up and down movement, which will cause the positioning pin to be unable to stably limit the position of the bushing, is solved.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A riveting bushing die, comprising a stamping block, a supporting assembly is arranged below the stamping block, the supporting assembly comprises a supporting pipe, a supporting rod and a positioning pin, a lubricating structure is arranged in the inside of the supporting rod, the lubricating structure lubricates the inside of the supporting pipe, a fastening structure is arranged in the inside of the positioning pin, and the fastening structure fastens the bushing.

[0008] Preferably, the bottom end of the supporting pipe is screw-connected with the supporting rod, the positioning pin is slidingly connected in the inside of the supporting pipe, and a spring is arranged between the supporting rod and the positioning pin.

[0009] Preferably, the lubricating structure comprises a lubricating cavity, the lubricating cavity is opened in the inside of the supporting rod, a movable plug is slidingly connected in the inside of the lubricating cavity, and an oiling cavity and an oil outlet cavity are arranged on the left and right sides of the lubricating cavity respectively.

[0010] Preferably, the oil feeding cavity and the oil discharging cavity are both in communication with the lubricating cavity, and one-way pipes are arranged in the oil feeding cavity and the oil discharging cavity, and the pipe diameter of the oil feeding cavity is smaller than that of the oil discharging cavity.

[0011] Preferably, a tail end of the positioning pin is provided with a plurality of flow-through cavities.

[0012] Preferably, the fastening structure comprises an oil storage cavity, a piston is slidably connected in the oil storage cavity, sliding cavities are provided on both sides of the oil storage cavity, a fastener is slidably connected in the sliding cavities, and a connecting rod is fixedly connected between the piston and the movable plug.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] 1. The lubricating structure can lubricate the inside of the support pipe, reduce the friction between the support pipe and the positioning pin, avoid the phenomenon of shaking or tilting of the positioning pin during vertical movement, and stabilize the position of the bushing.

[0015] 2. The application has a lubricating structure. When the hydraulic oil is discharged to the inside of the support pipe through the oil discharging cavity to lubricate the inner wall, the excess lubricating oil will flow back to the inside of the lubricating cavity through the oil feeding cavity, preventing the inside of the support pipe from accumulating too much lubricating oil. Because the pipe diameter of the oil feeding cavity is smaller than that of the oil discharging cavity, lubricating oil will always exist in the inside of the support pipe, avoiding the situation that no lubricating oil exists in the inside of the support pipe, which leads to the inability to lubricate the inner wall of the support pipe. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the application is shown in the structure diagram;

[0017] Figure 2 The support assembly structure of the application is shown in the cross-sectional view;

[0018] Figure 3 The support rod structure of the application is shown in the cross-sectional view;

[0019] Figure 4 The positioning pin structure of the application is shown in the cross-sectional view;

[0020] Figure 5 The structure of the application is shown in the structure diagram; Figure 4 The enlarged schematic view of structure A in the application;

[0021] Figure 6 The support assembly structure connection bushing structure of the application is shown in the schematic view;

[0022] Wherein, 1, punch block; 2, support assembly; 201, support tube; 202, support rod; 203, positioning pin; 204, spring; 205, connecting rod; 3, lubricating structure; 301, lubricating cavity; 302, oil filling cavity; 303, oil outlet cavity; 304, one-way tube; 305, movable plug; 306, flow-through cavity; 4, fastening structure; 401, oil storage cavity; 402, piston; 403, sliding cavity; 404, fastener. DETAILED DESCRIPTION

[0023] As Figures 1-6 A riveting bushing die, comprising a punch block 1, a support assembly 2 is arranged below the punch block 1, the support assembly 2 comprises a support tube 201, a support rod 202 and a positioning pin 203, a lubricating structure 3 is arranged inside the support rod 202, the lubricating structure 3 lubricates the inside of the support tube 201, and a fastening structure 4 is arranged inside the positioning pin 203, the fastening structure 4 fastens the bushing.

[0024] Wherein, the lubricating structure 3 arranged can lubricate the inside of the support tube 201, reduce the friction between the support tube 201 and the positioning pin 203, and avoid the phenomenon of shaking or tilting of the positioning pin 203 when vertically moving, so as to stabilize and fix the position of the bushing.

[0025] As a preferred mode, the bottom end of the support tube 201 is screw-connected with the support rod 202, the positioning pin 203 is slidingly connected inside the support tube 201, and the spring 204 is arranged between the support rod 202 and the positioning pin 203.

[0026] Wherein, the bushing is sleeved on the positioning pin 203 during use, and then the bushing is inserted into the connecting hole of the connecting piece to be riveted, and then the punch block 1 is connected with the external punch equipment, the bushing in the connecting hole is punched by the punch block 1, and the bushing is riveted in the connecting hole, wherein the positioning pin 203 arranged fixes and limits the position of the bushing, so that the bushing will not be deviated or tilted when being punched and riveted.

[0027] As a preferred mode, the lubricating structure 3 comprises a lubricating cavity 301, the lubricating cavity 301 is arranged inside the support rod 202, the movable plug 305 is slidingly connected inside the lubricating cavity 301, and the oil filling cavity 302 and the oil outlet cavity 303 are arranged on the left and right sides of the lubricating cavity 301.

[0028] When the stamping block 1 presses the bushing on the positioning pin 203, the positioning pin 203 is pressed downward and slides in the inside of the support pipe 201, and the positioning pin 203 presses the movable plug 305 downward, and the movable plug 305 presses the lubricating oil in the inside of the lubricating cavity 301, and the lubricating oil is discharged to the inside of the support pipe 201 through the oil outlet cavity 303, thereby lubricating the inner wall of the support pipe 201.

[0029] As a preferred mode, the oil filling cavity 302 and the oil outlet cavity 303 are both communicated with the lubricating cavity 301, and the inside of the oil filling cavity 302 and the oil outlet cavity 303 are both provided with a one-way pipe 304, and the pipe diameter of the oil filling cavity 302 is smaller than that of the oil outlet cavity 303.

[0030] The oil filling cavity 302 can add lubricating oil to the inside of the lubricating cavity 301, and after the lubricating oil is discharged to the inside of the support pipe 201 through the oil outlet cavity 303 to lubricate the inner wall, the excess lubricating oil will flow back to the inside of the lubricating cavity 301 through the oil filling cavity 302, preventing the inside of the support pipe 201 from accumulating too much lubricating oil, and because the pipe diameter of the oil filling cavity 302 is smaller than that of the oil outlet cavity 303, there is always lubricating oil in the inside of the support pipe 201, avoiding the situation that there is no lubricating oil in the inside of the support pipe 201, which causes the inner wall of the support pipe 201 to be unable to be lubricated.

[0031] As a preferred mode, when it is necessary to add oil to the inside of the oil filling cavity 302, first, the support rod 202 is disassembled from the inside of the support pipe 201, then the extrusion pipe filled with lubricating oil is aligned with the pipe opening of the oil filling cavity 302, and then the extrusion pipe is extruded, and the lubricating oil flows into the inside of the oil filling cavity 302 under the pressure of the pipe wall of the extrusion pipe, thereby completing the lubricating oil adding process.

[0032] As a preferred mode, the tail end of the positioning pin 203 is provided with a plurality of flow cavities 306.

[0033] When the positioning pin 203 is pressed downward, the lubricating oil in the inside of the support pipe 201 is pressed, and the lubricating oil flows to the upper side of the tail end of the positioning pin 203 through the flow cavity 306, and when the positioning pin 203 is pressed upward, the lubricating oil on the upper side of the tail end of the positioning pin 203 is moved, and this step can lubricate the upper side of the inner wall of the support pipe 201, thereby fully lubricating the inner wall of the support pipe 201 and avoiding the formation of a lubrication dead angle.

[0034] As a preferred mode, the fastening structure 4 comprises an oil storage cavity 401, a piston 402 is slidably connected in the inside of the oil storage cavity 401, a sliding cavity 403 is provided on both sides of the oil storage cavity 401, a fastener 404 is slidably connected in the inside of the sliding cavity 403, and a connecting rod 205 is fixedly connected between the piston 402 and the movable plug 305.

[0035] When the punch block 1 presses the bushing on the positioning pin 203, the positioning pin 203 will move downward under the pressure and slide inside the support pipe 201. When the movable plug 305 presses the hydraulic oil inside the lubricating cavity 301, the counterforce provided will make the connecting rod 205 drive the piston 402 to move upward. When the piston 402 moves upward inside the oil storage cavity 401, it will press the hydraulic oil inside the oil storage cavity 401, and the hydraulic oil will flow into the inside of the sliding cavity 403, so that the fastener 404 moves out of the sliding cavity 403, thereby supporting and abutting the bushing outside the positioning pin 203. This avoids the phenomenon that the inside diameter of the bushing is too large and the positioning pin 203 cannot fully contact the bushing, and can more tightly fix the position of the bushing on the positioning pin 203.

[0036] As a preferred mode, the material of the fastener 404 can be made of rubber, which can not only play a sealing role to prevent the lubricating oil in the sliding cavity 403 from flowing out, but also be soft to avoid damaging the inner wall of the bushing.

[0037] As a preferred mode, when the riveting step is completed, the positioning pin 203 is reset under the action of the spring 204, which also restores the initial position of the movable plug 305 and the piston 402 (as shown in Figure 2 ).

[0038] Working principle: when in use, the bushing is sleeved on the positioning pin 203, and then the bushing is inserted into the connecting hole of the connecting piece to be riveted. The punch block 1 is connected to the external punch equipment, and the bushing in the connecting hole is punched by the punch block 1, so that the bushing is riveted in the connecting hole. The positioning pin 203 provided plays a role in fixing and limiting the position of the bushing, so that the bushing will not be shifted or skewed when being punched and riveted. When the punch block 1 presses the bushing on the positioning pin 203, the positioning pin 203 will move downward under the pressure and slide inside the support pipe 201. When the positioning pin 203 moves downward, it will press the movable plug 305 to move downward, and when the movable plug 305 moves downward, it will press the lubricating oil inside the lubricating cavity 301, so that the lubricating oil is discharged to the inside of the support pipe 201 through the oil outlet cavity 303, thereby lubricating the inner wall of the support pipe 201. After the lubricating oil is discharged to the inside of the support pipe 201 to lubricate the inner wall, the excess lubricating oil will flow back to the inside of the lubricating cavity 301 through the oil inlet cavity 302, preventing too much lubricating oil from accumulating inside the support pipe 201. Because the oil inlet cavity 302 has a smaller diameter than the oil outlet cavity 303, there is always lubricating oil inside the support pipe 201 (more lubricating oil flows into the inside of the support pipe 201 than flows back to the inside of the oil inlet cavity 302), avoiding the phenomenon that there is no lubricating oil inside the support pipe 201, which leads to the inability to lubricate the inner wall of the support pipe 201.

Claims

1. A riveting bushing die comprising a punch block (1), characterized in that, The lower part of the stamping block (1) is provided with a support assembly (2), the support assembly (2) comprises a support pipe (201), a support rod (202) and a positioning pin (203), the inside of the support rod (202) is provided with a lubricating structure (3), the lubricating structure (3) lubricates the inside of the support pipe (201), the inside of the positioning pin (203) is provided with a fastening structure (4), the fastening structure (4) fastens the bushing.

2. A bushing die according to claim 1 wherein, The bottom end of the support pipe (201) is screw connected with the support rod (202), the positioning pin (203) is slidingly connected in the support pipe (201), and the spring (204) is arranged between the support rod (202) and the positioning pin (203).

3. A bushing die as defined in claim 2 wherein, The lubricating structure (3) comprises a lubricating cavity (301), the lubricating cavity (301) is arranged in the support rod (202), the inside of the lubricating cavity (301) is slidingly connected with a movable plug (305), and the left and right sides of the lubricating cavity (301) are respectively provided with an oil filling cavity (302) and an oil outlet cavity (303).

4. A bushing die as defined in claim 3 wherein, The oil filling cavity (302) and the oil outlet cavity (303) are in communication with the lubricating cavity (301), the inside of the oil filling cavity (302) and the oil outlet cavity (303) is provided with a one-way pipe (304), and the pipe diameter of the oil filling cavity (302) is smaller than that of the oil outlet cavity (303).

5. A bushing die as defined in claim 2 wherein, The tail end of the positioning pin (203) is provided with a plurality of flow cavities (306).

6. A bushing die as defined in claim 3 wherein, The fastening structure (4) comprises an oil storage cavity (401), the inside of the oil storage cavity (401) is slidingly connected with a piston (402), both sides of the oil storage cavity (401) are provided with a sliding cavity (403), the inside of the sliding cavity (403) is slidingly connected with a fastener (404), and the piston (402) and the movable plug (305) are fixedly connected with a connecting rod (205).

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