A multi-process fixture

Abstract

The present invention discloses a multi-process clamp, comprising a base, a clamping opening with an opening facing upwards is provided on the base, and a positioning opening connected to the clamping opening is provided on the side of the base; the clamping block and a swing plate are also provided, the clamping block is placed in the positioning opening of the base, a positioning pin is installed on the base, and the clamping block is movably matched with the positioning pin through a slot; a groove is provided in the middle of the clamping block, the right end of the swing plate is inserted into the groove of the clamping block, and the clamping block is rotatably connected through a rotating shaft, and a protruding abutment block is provided below the right end of the swing plate, and the abutment block abuts against the clamping block; a compression spring assembly for pressing down the swing plate is provided above the left end of the swing plate, and a cylinder assembly for lifting the swing plate is provided below. The present invention converts the elastic force of the compression spring into a clamping force for clamping an object through the principle of a lever, is easy to install, has low energy consumption, and has high clamping precision, and can be used for multi-process flow processing.

Description

Technical Field

[0001] The invention belongs to the technical field of clamping equipment, and in particular relates to a multi-process clamp. Background Art

[0002] Traditional product fixtures mostly use mechanical methods such as air pressure and hydraulic pressure to fix products, and even use pliers to manually fix products. In the multi-step processing process, the product needs to be clamped for a long time and circulate between the various processes of the production line, so the hydraulic cylinder or pneumatic rod needs to continuously apply force to maintain the clamping force of the fixture for a long time, resulting in high energy consumption; while pliers need to be fixed manually, which is inefficient and slow, and is not suitable for high-efficiency production work. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and provide a multi-process fixture which is easy to use and consumes less energy.

[0004] To this end, the technical solution of the present invention is: a multi-process clamp, characterized in that: it includes a base, a clamping opening opening facing upward is provided on the base, and a positioning opening connected to the clamping opening is provided on the side of the base; it also includes a clamping block and a swing plate, the clamping block is placed in the positioning opening of the base, and a positioning pin is installed on the base, and the clamping block is movably matched with the positioning pin through a slot; a groove is provided in the middle of the clamping block, the right end of the swing plate is inserted into the groove of the clamping block, and the clamping block is rotatably connected by a rotating shaft, and a protruding resistance block is provided below the right end of the swing plate, and the resistance block is in contact with the clamping block; a compression spring assembly for pressing down the swing plate is provided above the left end of the swing plate, and a cylinder assembly for lifting the swing plate is provided below.

[0005] Furthermore, the compression spring assembly presses down the left end of the swing plate, the swing plate tilts, and the resistance block at the right end pushes the clamping block to move toward the clamping port; the cylinder assembly lifts the left end of the swing plate, the swing plate is horizontal, and the right end drives the clamping block to return to the positioning port through the rotating shaft.

[0006] Furthermore, the clamping block is provided with a first slot hole and a second slot hole, and a fourth slot hole is provided above the right end of the swing plate and is opposite to the first slot hole; the base is fixed with a first positioning pin and a second positioning pin arranged up and down, the first positioning pin passes through the first slot hole of the clamping block and the fourth slot hole of the swing plate in sequence, and the second positioning pin passes through the second slot hole of the clamping block.

[0007] Furthermore, the clamping block is provided with a third slot hole, which is located between the first slot hole and the second slot hole. A rotating shaft is installed below the right end of the swing plate, and the clamping block rotates with the rotating shaft through the third slot hole.

[0008] Further, the clamping block has a "C"-shaped structure, including a clamping surface and two side surfaces on both sides, with a groove formed in the middle for the swing plate to be inserted; the clamping surface is at the junction of the positioning opening and the clamping opening, and the opening of the groove of the clamping block faces the outside of the base; the right end of the swing plate is inserted into the groove, and the abutting block below the right end abuts against the clamping surface.

[0009] Further, the compression spring assembly includes a mounting bracket, a compression spring, and an adjusting screw. The mounting bracket is provided with a mounting hole. The left end of the swing plate is located below the mounting bracket, and a spring mounting post is provided above the left end of the swing plate. The compression spring is sleeved on the spring mounting post, and the adjusting screw abuts against the compression spring and is in threaded cooperation with the mounting hole.

[0010] In the initial state, the cylinder assembly is in the working state. The cylinder rod lifts the left end of the swing plate upward, so that the swing plate maintains a horizontal state. At this time, the compression spring is in a compressed state, and the clamping block is completely located within the positioning opening; then the object to be clamped is placed into the clamping opening of the base, and the clamping opening is slightly larger than the object to be clamped; the cylinder rod of the cylinder assembly leaves the swing plate, and the compression spring gives a downward elastic force to the left end of the swing plate, causing the swing plate to rotate and tilt along the rotating shaft below the right end. During the tilting process, the abutting end below the right end of the swing plate will翘 up counterclockwise, thereby giving a force to the clamping block in contact with it. The clamping block is installed on the rotating shaft through a slot hole. After the clamping block receives this force, it moves towards the clamping opening, thereby abutting against the object to be clamped and fixing the object to be clamped within the base.

[0011] When the object to be clamped within the base is processed and completed in each process, the cylinder assembly starts to work. The cylinder rod lifts the left end of the swing plate upward. After receiving the upward force, the swing plate rotates along the first positioning pin shaft above the right end, causing the swing plate to return to the horizontal state. During the rotation process, the lower right end of the swing plate deflects clockwise, and the rotating shaft drives the clamping block to reset back into the positioning opening, releasing the object to be clamped and taking out the object to be clamped for subsequent operations.

[0012] In the present invention, when clamping, only the cylinder is used to lift the swing plate, and then the object to be clamped can be directly placed into the clamping opening of the base. After the cylinder retracts, the elastic force of the spring is used to press down the left end of the swing plate. After the right end of the swing plate is lifted, it pushes the clamping block to complete the clamping work. The present invention transforms the elastic force of the compression spring into the clamping force for clamping the object through the lever principle, and the cylinder only serves as the power source for releasing the clamping force of the fixture. Compared with traditional fixtures, the energy consumption is greatly reduced. The elastic force end where the compression spring is located serves as the power arm, and the clamping force end where the clamping block is located serves as the resistance arm. If the clamping force is small, the clamping force can be increased by tightening the adjusting screw or replacing the spring with a greater elastic force. The present invention is easy to install, has low energy consumption, and high clamping accuracy, and can be used for multi-process flow processing. Description of the Drawings

[0013] The following further describes in detail in conjunction with the drawings and the embodiments of the present invention

[0014] Figure 1 is the exploded view of the parts of the present invention;

[0015] Figure 2 is the structural sectional view of the initial state of the present invention;

[0016] Figure 3 is the structural sectional view of the working state of the present invention.

[0017] In the figure, the markings are: base 1, clamping opening 11, positioning opening 12, through hole 13, clamping block 2, clamping surface 21, first slot 22, second slot 23, third slot 24, swing plate 3, abutting block 31, fourth slot 32, spring mounting post 33, first positioning pin 41, second positioning pin 42, rotating shaft 43, mounting bracket 51, compression spring 52, adjusting screw 53, mounting hole 54, cylinder 6, cylinder rod 61, object to be clamped 7. Specific embodiments

[0018] Referring to the accompanying drawings. The fixture described in this embodiment includes a rectangular base 1. On the base 1, there is a square clamping opening 11 with an upward opening. On the side of the base 1, there is a positioning opening 12 communicating with the clamping opening. On both sides of the positioning opening, there are two through holes 13 for installing positioning pins; it also includes a clamping block 2 and a swing plate 3. The clamping block 2 is placed in the positioning opening 12 of the base. The clamping block 2 has a "C" - shaped structure, including a clamping surface 21 and two side surfaces on both sides. The clamping surface 21 is at the junction of the positioning opening and the clamping opening. The opening of the clamping block faces the outside of the base. On the two side surfaces, there are a first slot 22 and a second slot 23, which are opposite to the positions of the two through holes 13 on the base, facilitating the installation of positioning pins.

[0019] The swing plate 3 has a long - strip structure. The right end is inserted between the two side surfaces of the clamping block. And below the right end of the swing plate, there is a protruding abutting block 31, and the abutting block 31 abuts against the clamping surface 21 of the clamping block; above the right end of the swing plate, there is a fourth slot 32 opposite to the position of the first slot 22. The two through holes on the base 1 are arranged vertically, and the first positioning pin 41 and the second positioning pin 42 are respectively fixed. The first positioning pin 41 sequentially passes through the first slot 22 of the clamping block and the fourth slot 32 of the swing plate, and the second positioning pin 42 passes through the second slot 23 of the clamping block. There is also a third slot 24 on the clamping block 2, located between the first slot and the second slot. A rotating shaft 43 is installed below the right end of the swing plate 3, and the clamping block 2 is rotationally matched with the rotating shaft 43 through the third slot 24.

[0020] A compression spring assembly for pressing down the swing plate is arranged above the left end of the swing plate 3, and a cylinder assembly for lifting the swing plate is arranged below. The compression spring assembly includes a mounting frame 51, a compression spring 52 and an adjusting screw 53. The mounting frame 51 is a frame-shaped structure with a mounting hole 54 arranged above. The left end of the swing plate 3 is located below the mounting frame 51, and a spring mounting column 33 is arranged above the left end of the swing plate 3. The compression spring 52 is sleeved on the spring mounting column 33. An adjusting screw 53 is arranged above the compression spring 52, and the adjusting screw is threadedly matched with the mounting hole. The elastic force of the spring can be adjusted by adjusting the screw, thereby changing the clamping force of the clamping block, or changing the springs with different elastic forces to change the clamping force. The cylinder assembly includes a vertically arranged cylinder 6, the cylinder rod 61 of the cylinder faces the left end of the swing plate, and the force given to the swing plate by the cylinder can keep the swing plate in a horizontal state. When the cylinder withdraws the cylinder rod, the compression spring presses down the left end of the swing plate, so that the swing plate tilts, and the resistance block at the right end pushes the clamping block to move toward the clamping port to clamp the object.

[0021] In the initial state, the cylinder 6 is in the working state, and the cylinder rod 61 lifts the left end of the swing plate 3 upward, so that the swing plate 3 remains in the horizontal state. At this time, the compression spring 52 is in the compressed state, and the clamping block 2 is completely located in the positioning opening 12; then the clamped object 7 is placed in the clamping opening 11 of the base 1, and the clamping opening is slightly larger than the clamped object; the cylinder 6 stops working, the cylinder rod 61 leaves the swing plate 3, and the compression spring 52 gives the left end of the swing plate a downward elastic force, so that the swing plate 3 rotates and tilts around the rotating shaft 43 below the right end, and the tilting During the process, the fourth slot 32 above the right end of the swing plate will move leftward relative to the first positioning pin 41, and the abutment block 31 below the right end of the swing plate 3 will tilt counterclockwise, thereby giving a rightward force to the clamping block 2 abutting against it, and the clamping block 2 is installed on the rotating shaft 43 through the third slot 24. When the clamping block is subjected to the force, it moves to the right, that is, to the clamping opening, and the clamping surface 21 of the clamping block 2 leaves the positioning opening and abuts against the clamped object 7, fixing the clamped object 7 in the clamping opening of the base 1. The first slot and the second slot of the clamping block can limit the horizontal movement of the clamping block.

[0022] After the base 1 drives the clamped object 7 to be processed in each process, the cylinder 6 starts to work, and the cylinder rod 61 lifts the left end of the swing plate 3 upward. After the left end of the swing plate is subjected to an upward force, the swing plate 3 rotates along the first positioning pin shaft 41 above the right end until the swing plate 3 returns to a horizontal state. During the rotation, the lower right end of the swing plate 3 deflects clockwise to the left, and the rotating shaft 43 drives the clamping block 2 to move to the left, and the clamping surface 21 leaves the clamped object 7 and returns to the positioning port 12. After the processed clamped object is removed, the next clamped object to be processed is placed in, and subsequent operations are continued.

Claims

1. A multi-process fixture, characterized in that: It includes a base with a clamping opening facing upward, and a positioning opening communicating with the clamping opening on the side of the base; it also includes a clamping block and a swing plate. The clamping block is placed in the positioning opening of the base. A positioning pin shaft is installed on the base, and the clamping block is movably matched with the positioning pin shaft through a slot hole; a groove is provided in the middle of the clamping block, the right end of the swing plate is inserted into the groove of the clamping block, and the swing plate is rotationally connected to the clamping block through a rotating shaft. A protruding abutting block is provided below the right end of the swing plate, and the abutting block abuts against the clamping block; a compression spring assembly for pressing down the swing plate is provided above the left end of the swing plate, and a cylinder assembly for lifting the swing plate is provided below.

2. A multi-process fixture as claimed in claim 1, characterized in that: The compression spring assembly presses down the left end of the swing plate, the swing plate inclines, and the abutting block at the right end pushes the clamping block to move towards the clamping opening; the cylinder assembly lifts the left end of the swing plate, the swing plate is horizontal, and the right end drives the clamping block to reset back into the positioning opening through the rotating shaft.

3. A multi-process fixture as claimed in claim 1, characterized in that: The clamping block is provided with a first slot hole and a second slot hole, and a fourth slot hole opposite to the position of the first slot hole is provided above the right end of the swing plate; the first positioning pin shaft and the second positioning pin shaft arranged vertically are fixed on the base. The first positioning pin shaft sequentially passes through the first slot hole of the clamping block and the fourth slot hole of the swing plate, and the second positioning pin shaft passes through the second slot hole of the clamping block.

4. A multi-process fixture as claimed in claim 3, characterized in that: The clamping block is further provided with a third slot hole, which is located between the first slot hole and the second slot hole. A rotating shaft is installed below the right end of the swing plate, and the clamping block is rotationally matched with the rotating shaft through the third slot hole.

5. A multi-process fixture as claimed in claim 1, characterized in that: The clamping block has a "C"-shaped structure, including a clamping surface and two side surfaces on both sides, and a groove for the swing plate to insert is formed in the middle; the clamping surface is at the junction of the positioning opening and the clamping opening, and the opening of the groove of the clamping block faces the outside of the base; the right end of the swing plate is inserted into the groove, and the abutting block below the right end abuts against the clamping surface.

6. A multi-process fixture as claimed in claim 1, characterized in that: The compression spring assembly includes a mounting frame, a compression spring and an adjusting screw. The mounting frame is provided with a mounting hole. The left end of the swing plate is located below the mounting frame, and a spring mounting post is provided above the left end of the swing plate. The compression spring is sleeved on the spring mounting post. The adjusting screw abuts against the compression spring and is in threaded cooperation with the mounting hole.

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