Pressing tool with biased opening and closing gravity center

Abstract

The utility model provides a compression tool capable of opening and closing with a biased gravity center, which comprises a tool main body, a plurality of clamp components arranged in the tool main body, and a manual valve arranged on the side part of the tool main body, the clamp assembly is provided with a plurality of pressing blocks, a clamping space is formed between every two adjacent pressing blocks, the tool body is provided with a loading plate, through grooves are formed in the positions, corresponding to the pressing blocks, of the loading plate, and positioning grooves are formed in the positions, corresponding to the clamping spaces, of the loading plate. The clamp assembly is configured to operate between a clamping state and a releasing state, and in the clamping state, the pressing block and the positioning groove are close to each other; in the releasing state, the pressing block and the positioning groove are far away from each other, when the clamping device works, an interference structure of a machined part can be automatically avoided through gravity center offset, clamping and positioning are convenient, the situation that the machined part is scratched can be avoided, machined parts of different shapes can be positioned, and the machining precision and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, and in particular to a clamping tool with an offset center of gravity for opening and closing. Background Technology

[0002] Casting is a manufacturing process that involves pouring molten metal or other materials into a pre-made mold cavity, allowing it to cool and solidify to obtain parts or blanks with specific shapes and properties. Cast parts require further finishing before use. During finishing, for parts with simple structures but requiring high precision in the sidewalls and top, clamping fixtures are typically used to clamp the bottom or base of the part. However, existing clamping fixtures, during release, can easily scratch the machined surface, affecting part quality and leading to defective products. Furthermore, existing clamping fixtures, used for positioning parts, interfere with the part's structure, preventing normal clamping and necessitating changes to the positioning datum, thus affecting the part's machining accuracy and efficiency. Utility Model Content

[0003] This invention provides a clamping fixture with an offset center of gravity for opening and closing, which can effectively solve the above problems.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a clamping fixture with an offset center of gravity for opening and closing, comprising:

[0006] The tooling body includes multiple clamping assemblies arranged inside, and a manual valve disposed on the side of the tooling body. Each clamping assembly has multiple pressure blocks, with a clamping space formed between adjacent pressure blocks. The tooling body also includes a loading plate with through slots at positions corresponding to the pressure blocks and positioning slots at positions corresponding to the clamping spaces. The clamping assemblies are configured to operate between a clamping state and a releasing state. In the clamping state, the pressure blocks and the positioning slots are close to each other; in the releasing state, the pressure blocks and the positioning slots are far apart.

[0007] As a further improvement, the tooling body is also provided with a base, the base having multiple mounting holes at the position corresponding to the fixture assembly, and multiple support columns on the base, with the loading plate connected to the end of the support column away from the base.

[0008] As a further improvement, the loading plate has a machining clearance groove inside the positioning groove.

[0009] As a further improvement, the clamp assembly is also provided with a connecting rod and an ultra-thin cylinder. The ultra-thin cylinder is fixedly mounted on the base, and the piston rod of the ultra-thin cylinder is connected to the connecting rod. Both ends of the connecting rod are rotatably equipped with pressure blocks.

[0010] As a further improvement, the lower end of the pressure block is connected to the connecting rod, and the upper end of the pressure block is provided with a plurality of protrusions on the side near the positioning groove, and a clearance groove is formed between two adjacent protrusions. The upper end of the pressure block extends to form a protrusion on the side away from the clearance groove, and the protrusion is configured to change the center of gravity of the pressure block.

[0011] As a further improvement, the manual valve is connected to the ultra-thin cylinder via an air pipe.

[0012] The beneficial effects of this utility model are:

[0013] This invention addresses the issue of workpiece defects by incorporating clearance grooves on the clamping block to avoid contact with the machined surface during release, thus preventing scratches and reducing defective products. Furthermore, the protrusions alter the clamping block's center of gravity, causing it to automatically tilt away from the workpiece during release, effectively avoiding interference and ensuring proper clamping while further preventing friction with the workpiece's sidewall. Multiple clamping components allow for simultaneous clamping of multiple workpieces, and the manual valve enables unified control of the ultra-thin cylinder, facilitating batch processing, shortening single clamping time, and significantly improving production efficiency. The positioning grooves and clearance grooves allow for the positioning and fixing of different workpieces without frequent calibration, enhancing clamping stability and machining accuracy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a clamping fixture with an offset center of gravity opening and closing according to this utility model.

[0016] Figure 2 This is a schematic diagram of the usage state of a clamping fixture with an offset center of gravity opening and closing according to this utility model.

[0017] Figure 3 This is a schematic diagram of the main structure of a clamping fixture with an offset center of gravity opening and closing mechanism according to this utility model.

[0018] Figure 4This is a cross-sectional view of the overall structure of a clamping fixture with an offset center of gravity opening and closing according to the present invention.

[0019] Figure 5 This is a schematic diagram of the clamping assembly structure of a clamping tool with an offset center of gravity opening and closing according to the present invention.

[0020] In the diagram: 1-Main fixture, 11-Base, 111-Mounting hole, 12-Support column, 13-Loading plate, 131-Positioning groove, 132-Machining clearance groove, 133-Through groove, 2-Clamping assembly, 21-Pressure block, 211-Protrusion, 212-Protrusion, 213-Clearing groove, 22-Connecting rod, 23-Ultra-thin cylinder, 3-Manual valve, 4-Machining part. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Reference Figures 1-4 As shown, a clamping fixture with an offset center of gravity for opening and closing includes:

[0024] The tooling body 1 contains multiple clamping assemblies 2 arranged inside, and a manual valve 3 disposed on the side of the tooling body 1. Each clamping assembly 2 has multiple pressure blocks 21, with a clamping space formed between adjacent pressure blocks 21. The tooling body 1 has a loading plate 13, which has through grooves 133 at positions corresponding to the pressure blocks 21 and positioning grooves 131 at positions corresponding to the clamping spaces. The clamping assemblies 2 are configured to operate between a clamping state and a releasing state. In the clamping state, the pressure blocks 21 and... The positioning grooves 131 are close to each other; in the release state, the pressure block 21 and the positioning groove 131 are far apart. By setting the clearance groove 213 on the pressure block 21, the protruding structure on the side wall of the workpiece 4 can be avoided, preventing the pressure block 21 from contacting the processed surface during release, avoiding scratches, reducing defective products, and by setting the protrusion 211, the center of gravity of the pressure block 21 is changed, so that it automatically tilts away from the workpiece 4 in the release state. The structure that just avoids interference with the workpiece allows the workpiece to be clamped normally and further avoids friction with the side wall of the workpiece 4.

[0025] Furthermore, the tooling body 1 includes: a base 11, support columns 12, and a loading plate 13. Multiple clamping assemblies 2 are arranged on the base 11 to enable simultaneous processing of multiple workpieces 4, improving part processing efficiency. The base 11 has multiple mounting holes 111 at the positions corresponding to the clamping assemblies 2. The clamping assemblies 2 are fixedly connected to the base 11 by bolts through the mounting holes 111. Multiple support columns 12 are provided on the base 11. A loading plate 13 is connected to the end of each support column 12 away from the base 11. A through groove 133 is formed on the loading plate 13 at the position corresponding to the pressure block 21. A positioning groove 131 is provided between two adjacent through grooves 133. The positioning groove 131 corresponds to the clamping space formed by the pressure block 21. The positioning groove 131 is used to place the workpiece 4 with a square bottom or base, and to provide clamping and positioning for the workpiece 4, as well as to ensure the stability of the workpiece 4 during clamping, so as to avoid the workpiece 4 shaking during clamping and causing repeated clamping. The loading plate 13 has a processing clearance groove 132 inside the positioning groove 131. The processing clearance groove 132 is used to place the workpiece 4 with a round or near-round bottom or base, and to provide clamping and positioning for the workpiece 4, as well as to ensure the stability of the workpiece 4 during clamping, so as to avoid the workpiece 4 shaking during clamping and causing repeated clamping.

[0026] Furthermore, the clamping assembly 2 includes: a pressure block 21, a connecting rod 22, and an ultra-thin cylinder 23. The ultra-thin cylinder 23 is fixedly connected to the base 11 by bolts through the mounting hole 111. The piston rod of the ultra-thin cylinder 23 is connected to the connecting rod 22. Pressure blocks 21 are rotatably mounted on both ends of the connecting rod 22. The pressure blocks 21 pass through the through groove 133 and are located on both sides of the positioning groove 131. The lower end of the pressure block 21 is connected to the connecting rod 22. The upper end of the pressure block 21 has multiple protrusions 212 on the side near the positioning groove 131. The protrusions 212 are used to press against the bottom of the workpiece 4 or the workpiece 4 when clamped. At the base, a clearance groove 213 is formed between two adjacent protrusions 212. The clearance groove 213 is used to prevent the pressure block 21 from contacting the workpiece 4 with a protrusion on the side wall, and to prevent the pressure block 21 from leaving scratches on the workpiece 4 during the release process. The upper end of the pressure block 21 extends to form a protrusion 211 on the side away from the clearance groove 213. The protrusion 211 is configured to change the center of gravity of the pressure block 21, so that the pressure block 21 can tilt towards the side away from the positioning groove 131 during the release process, thereby facilitating the quick removal of the workpiece 4 and preventing contact between the side wall of the workpiece 4 and the pressure block 21.

[0027] Furthermore, the tooling body 1 is equipped with a manual valve 3 on its side. The manual valve 3 controls the extension and retraction of the ultra-thin cylinder 23 by compressed air. In the clamping state, the cylinder depressurizes, causing the push rod inside the cylinder to retract and drive the connecting rod 22 to move downward, thereby causing the pressure block 21 to rotate towards the positioning groove 131 and move downward along the through groove 133 until the protrusion 212 contacts the workpiece 4, thus clamping the workpiece 4. In the releasing state, the cylinder inflates, causing the push rod inside the cylinder to extend and drive the connecting rod 22 to move upward, thereby causing the pressure block 21 to move upward along the through groove 133. Driven by the protrusion 211, the pressure block 21 tends to rotate away from the positioning groove 131 during the upward movement until the push rod inside the cylinder is pushed to its maximum stroke, and the pressure block 21 rotates and abuts against the edge of the through groove 133, thus releasing the workpiece 4.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping fixture with an offset center of gravity for opening and closing, characterized in that, include: Tooling body (1), wherein multiple clamping assemblies (2) are arranged inside the tooling body (1), and a manual valve (3) is disposed on the side of the tooling body (1); The clamping assembly (2) is provided with a plurality of pressure blocks (21), and a clamping space is formed between two adjacent pressure blocks (21). The tooling body (1) is provided with a loading plate (13), and the loading plate (13) has a through groove (133) at the position corresponding to the pressure block (21), and a positioning groove (131) at the position corresponding to the clamping space. The clamping assembly (2) is configured to operate between a clamping state and a releasing state, wherein in the clamping state, the pressure block (21) and the positioning groove (131) are close to each other; and in the releasing state, the pressure block (21) and the positioning groove (131) are far apart from each other.

2. The clamping fixture with offset center of gravity opening and closing according to claim 1, characterized in that, The tooling body (1) is also provided with a base (11). The base (11) has multiple mounting holes (111) at the position corresponding to the clamp assembly (2). The base (11) is provided with multiple support columns (12). The support column (12) is connected to the loading plate (13) at the end away from the base (11).

3. The clamping fixture with offset center of gravity opening and closing according to claim 2, characterized in that, The loading plate (13) has a machining clearance groove (132) inside the positioning groove (131).

4. The clamping fixture with offset center of gravity opening and closing according to claim 2, characterized in that, The clamp assembly (2) is also provided with a connecting rod (22) and an ultra-thin cylinder (23). The ultra-thin cylinder (23) is fixedly mounted on the base (11). The piston rod of the ultra-thin cylinder (23) is connected to the connecting rod (22). Both ends of the connecting rod (22) are rotatably provided with pressure blocks (21).

5. The clamping fixture with offset center of gravity opening and closing according to claim 4, characterized in that, The lower end of the pressure block (21) is connected to the connecting rod (22). The upper end of the pressure block (21) is provided with a plurality of protrusions (212) on the side near the positioning groove (131). An avoidance groove (213) is formed between two adjacent protrusions (212). The upper end of the pressure block (21) extends to form a protrusion (211) on the side away from the avoidance groove (213). The protrusion (211) is configured to change the center of gravity of the pressure block (21).

6. The clamping fixture with offset opening and closing according to claim 4, characterized in that, The manual valve (3) is connected to the ultra-thin cylinder (23) via an air pipe.

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