Special-shaped screw dismounting and mounting device for automobile manufacturing

Abstract

The utility model belongs to the technical field of accessory equipment for automobile part machining, and particularly relates to a special-shaped screw dismounting and mounting device for automobile manufacturing. The device comprises a sleeve, a pushing spring, a connector and an ejector pin, one end of the sleeve is connected with an electric wrench, the other end of the sleeve is an operation cavity, the pushing spring is located in the operation cavity, the left end of the pushing spring is connected with the interior of the operation cavity, the right end of the pushing spring is connected with the left end of the ejector pin, and a clamping groove is formed in the right end of the operation cavity. A clamping groove is formed in the center of the ejector pin, the side wall of the clamping groove is matched with the outer wall of the connector in parameter, the connector is inserted into the clamping groove, a first through hole is formed in the middle of the connector, the shape of the first through hole is matched with that of a nut to be detached, and the right end of the ejector pin penetrates out of the first through hole and extends out of the operation cavity. The workload, the quality and the dismounting efficiency of manually dismounting the special-shaped nut are effectively improved; the appearance of a product can be better protected, and the screw can be repeatedly used.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment for processing automobile parts, in particular to a device for disassembling and assembling special-shaped screws for automobile manufacturing. Background Art

[0002] With the advancement of automotive component technology, to reduce overall component weight, ease processing difficulty, and optimize product structure, some vehicle models currently utilize steel and aluminum alloy joints in their door sill assemblies to achieve lightweighting. To enhance safety, special-shaped screws are often used for key connection screws. These screws require installation with controlled torque, necessitating the use of specialized fixed-torque screw installation machines. During product prototype production, if screws need to be removed to inspect the condition of various components, conventional tools are not feasible. The typical method involves manually cutting off the screw head with a handheld grinding wheel and then unscrewing the remaining portion. Manual head removal is labor-intensive and cannot be achieved semi-automatically or automatically. Manual head removal can easily damage the component, making it impossible to accurately inspect the connection status later. After cutting off the screw head, the remaining portion of the screw cannot be removed. This wastes manpower and resources, while also causing irreparable damage to the component. Summary of the Invention

[0003] The utility model provides a device for disassembling and assembling special-shaped screws for automobile manufacturing, which can realize efficient disassembly and assembly of special-shaped screws.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A device for disassembling and assembling special-shaped screws for automobile manufacturing includes a sleeve, a push spring, a connector and a thimble. One end of the sleeve is connected to an electric wrench, and the other end is an operating chamber. The push spring is located in the operating chamber, the left end of the push spring is connected to the inside of the operating chamber, and the right end is connected to the left end of the thimble. A slot is provided at the right end of the operating chamber, and the side walls of the slot match the parameters of the outer wall of the connector. The connector is inserted into the slot. A first through hole is provided in the middle of the connector, and the shape of the first through hole matches the shape of the nut to be disassembled. The right end of the thimble passes through the first through hole and extends out of the operating chamber.

[0006] The above-mentioned special-shaped screw disassembly and assembly device for automobile manufacturing is also provided with a guide mechanism, a guide hole is provided at the left end of the operating chamber, the guide mechanism includes a guide rod and a baffle, the left end of the guide rod extends into the guide hole, the guide rod moves left and right in the guide hole, the push spring is sleeved outside the guide rod, and the two ends of the spring are respectively pressed against the baffle and the left end of the operating chamber, the right end of the guide rod is fixedly connected to the left side of the baffle, and the right side of the baffle is fixedly connected to the ejector pin.

[0007] In the above-mentioned special-shaped screw disassembly and assembly device for automobile manufacturing, a limit block is fixedly connected to the middle of the operating chamber, a limit through hole is provided in the middle of the limit block, the ejector pin passes through the limit through hole and is connected to the baffle, the ejector pin is rod-shaped, and the radial cross-section of the ejector pin is hexagonal, and the shape of the limit through hole matches the shape of the ejector pin.

[0008] The above-mentioned special-shaped screw disassembly and assembly device for automobile manufacturing has a positioning hole on the inner wall of the slot, a cylindrical positioning cavity on the side wall of the connecting head, a cover plate at the opening of the positioning cavity, a positioning through hole in the middle of the cover plate, a positioning compression spring in the positioning cavity, a ball on the top of the positioning compression spring, the diameter of the positioning through hole is smaller than the diameter of the ball, and the ball is exposed outside the side wall of the connecting head.

[0009] The above-mentioned special-shaped screw disassembly and assembly device for automobile manufacturing has a radial cross-section of the connecting head that is square.

[0010] Compared with existing technologies, this new connector allows for quick and accurate connection, improving assembly and disassembly efficiency and can be used in automated assembly and disassembly systems. Flexible operation, especially with an electric wrench, allows for efficient screw assembly and disassembly. Different shaped nuts can be assembled and disassembled simply by replacing the connector. The connector is designed with a pin to prevent it from falling off during use.

[0011] It effectively improves the workload, quality and efficiency of manual removal of special-shaped nuts; it can better protect the appearance of the product and the screws can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the positioning cavity of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the connector of the utility model;

[0016] Figure 5 It is a structural diagram of the limit block of the utility model;

[0017] The symbols in the accompanying drawings indicate: 1. sleeve, 2. push spring, 3. connector, 3-1. first through hole, 4. ejector pin, 5. operating chamber, 5-1. slot, 6. guide hole, 7. guide rod, 8. baffle, 9. limit block, 9-1. limit through hole, 10. positioning hole, 11. positioning chamber, 12. cover plate, 13. positioning through hole, 14. positioning compression spring, 15. ball. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention.

[0019] like Figures 1 to 5 The present invention comprises a sleeve 1, a push spring 2, a connector 3, and an ejector pin 4. One end of the sleeve 1 is connected to the electric wrench, and the other end forms an operating chamber 5. The push spring 2 is located within the operating chamber 5. The left end of the push spring 2 is connected to the interior of the operating chamber 5, and the right end is connected to the left end of the ejector pin 4. A slot 5-1 is provided at the right end of the operating chamber 5. The sidewalls of the slot 5-1 match the parameters of the outer wall of the connector 3. The connector 3 is inserted into the slot 5-1. A first through hole 3-1 is provided in the middle of the connector 3. The shape of the first through hole 3-1 matches the shape of the nut to be removed. The right end of the ejector pin 4 passes through the first through hole 3-1 and extends out of the operating chamber 5. Through the above arrangement, the ejector pin 4 is pushed into the positioning hole 10 in the middle of the nut, and then the nut is clamped into the first through hole 3-1 and pushed toward the nut at the same time. The nut can be unscrewed by rotating the sleeve 1 with an electric wrench. Nuts of different shapes can use connectors 3 with different first through holes 3-1.

[0020] To ensure the stability of the ejector pin 4 and prevent it from tilting, a guide mechanism is provided. A guide hole 6 is provided at the left end of the operating chamber 5. The guide mechanism includes a guide rod 7 and a baffle 8. The left end of the guide rod 7 extends into the guide hole 6, allowing the guide rod 7 to move left and right within the guide hole 6. The push spring 2 is sleeved outside the guide rod 7. The right end of the guide rod 7 is fixedly connected to the left side of the baffle 8. The limit block 9 is located in the middle of the operating chamber 5. The two ends of the spring respectively press against the baffle 8 and the left end of the operating chamber 5. The right end of the baffle 8 is fixedly connected to the ejector pin 4.

[0021] To ensure that the push spring 2 is stably mounted within the operating chamber 5, a stopper block 9 is fixedly attached to the center of the operating chamber 5. A stopper hole 9-1 is defined in the center of the stopper block 9. The ejector pin 4 passes through the stopper hole 9-1 and connects to the retaining plate 8. The ejector pin 4 is rod-shaped with a hexagonal radial cross-section, and the shape of the stopper hole 9-1 matches that of the ejector pin 4. This ensures that the ejector pin 4 and the push spring 2 remain stable during the rotation of the sleeve 1.

[0022] To facilitate quick insertion of the connector 3 into the slot 5-1, the connector 3 has a square radial cross-section. The inner wall of the slot 5-1 is provided with a positioning hole 10, and the side wall of the connector 3 is provided with a cylindrical positioning cavity 11. A cover plate 12 is provided at the opening of the positioning cavity 11, and a positioning through-hole 13 is provided in the middle of the cover plate 12. A positioning compression spring 14 is provided in the positioning cavity 11, and a ball 15 is mounted on the top of the positioning compression spring 14. The diameter of the positioning through-hole 13 is smaller than the diameter of the ball 15, and the ball 15 is exposed outside the side wall of the connector 3.

[0023] The working process is as follows: select the corresponding connector 3 according to different nuts, connect the electric wrench to the end of the sleeve 1, then push the thimble 4 to the positioning hole 10 in the middle of the nut, and the left end of the guide rod 7 touches the left end of the guide hole 6. Then the nut is stuck in the first through hole 3-1 of the connector 3. At the same time, maintain the thrust in the direction of the nut. Drive the sleeve 1 to rotate by the electric wrench to unscrew the nut.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for disassembling and assembling special-shaped screws for automobile manufacturing, characterized in that: The invention comprises a sleeve (1), a push spring (2), a connector (3) and a thimble (4), wherein one end of the sleeve (1) is connected to an electric wrench and the other end is an operating chamber (5), the push spring (2) is located in the operating chamber (5), the left end of the push spring (2) is connected to the inside of the operating chamber (5), and the right end is connected to the left end of the thimble (4), the right end of the operating chamber (5) is provided with a slot (5-1), the side wall of the slot (5-1) matches the parameters of the outer wall of the connector (3), the connector (3) is inserted into the slot (5-1), a first through hole (3-1) is provided in the middle of the connector (3), the shape of the first through hole (3-1) matches the shape of the nut to be disassembled, and the right end of the thimble (4) passes through the first through hole (3-1) and extends out of the operating chamber (5).

2. The special-shaped screw disassembly and assembly device for automobile manufacturing according to claim 1, characterized in that: A guide mechanism is also provided. A guide hole (6) is provided at the left end of the operating chamber (5). The guide mechanism includes a guide rod (7) and a baffle (8). The left end of the guide rod (7) extends into the guide hole (6). The guide rod (7) moves left and right in the guide hole (6). The push spring (2) is sleeved outside the guide rod (7). The two ends of the spring respectively press against the baffle (8) and the left end of the operating chamber (5). The right end of the guide rod (7) is fixedly connected to the left side of the baffle (8), and the right side of the baffle (8) is fixedly connected to the ejector pin (4).

3. The special-shaped screw disassembly and assembly device for automobile manufacturing according to claim 2, characterized in that: A limiting block (9) is fixedly connected to the middle of the operating cavity (5), a limiting through hole (9-1) is provided in the middle of the limiting block (9), the ejector pin (4) passes through the limiting through hole (9-1) and is connected to the blocking piece (8), the ejector pin (4) is rod-shaped, the radial cross-section of the ejector pin (4) is hexagonal, and the shape of the limiting through hole (9-1) matches that of the ejector pin (4).

4. The special-shaped screw disassembling and assembling device for automobile manufacturing according to claim 3, characterized in that: The inner wall of the card slot (5-1) is provided with a positioning hole (10), the side wall of the connector (3) is provided with a cylindrical positioning cavity (11), a cover plate (12) is provided at the opening of the positioning cavity (11), a positioning through hole (13) is provided in the middle of the cover plate (12), a positioning compression spring (14) is provided in the positioning cavity (11), a ball (15) is provided on the top of the positioning compression spring (14), the diameter of the positioning through hole (13) is smaller than the diameter of the ball (15), and the ball (15) is exposed outside the side wall of the connector (3).

5. The special-shaped screw disassembling and assembling device for automobile manufacturing according to claim 4, characterized in that: The radial cross-section of the connector (3) is square.

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