Clamping device for four-column hydraulic press

Abstract

The utility model provides a clamping device for a four-column hydraulic press, which belongs to the technical field of four-column hydraulic presses and comprises a mounting shell and a clamping mechanism arranged in the mounting shell, the clamping mechanism comprises chutes symmetrically arranged at four corners of the upper surface of the mounting shell, movable clamping blocks are connected in the chutes in a sliding manner, avoiding components are arranged in the movable clamping blocks, and the movable clamping blocks are connected with the mounting shell. The receding assembly comprises sliding clamping blocks which are vertically connected into the movable clamping blocks in a sliding mode, and springs are arranged between the top wall faces of sliding holes formed in the middles of the lower surfaces of the sliding clamping blocks and the bottom wall faces of the vertically adjacent movable clamping blocks. Through cooperation of the clamping mechanisms, related workers can conveniently and rapidly clamp workpieces, the operation process is simplified, and the situation that the sliding clamping block hinders normal downward movement of the lower pressing plate in the machining process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of four-column hydraulic presses, and particularly relates to a clamping device for a four-column hydraulic press. Background Art

[0002] A four-column hydraulic press is a kind of pressure machine widely used in industrial production. It works based on the hydraulic principle and is especially suitable for pressing and forming various plastic materials such as metals, plastics, rubbers, woods, powders, etc. At present, when a four-column hydraulic press is working, a special clamping device for the four-column hydraulic press is required to fixedly clamp the workpiece to be processed;

[0003] The existing clamping devices for four-column hydraulic presses usually carry traditional clamping devices. T-shaped groove tracks are regularly distributed on their workbenches so that the fixture blocks can slide freely along the grooves. After the fixture blocks move to the appropriate positions, bolts are tightened to limit and fix the workpieces. However, there are still some problems in actual operation. The operator needs to move the fixture components to the predetermined positions one by one and tighten the bolts one by one to ensure that the clamping plates are closely attached to the processing surface. This process is cumbersome and time-consuming, reducing the work efficiency. Secondly, such a layout causes the fixture structure to be located in the processing area, making it difficult to quickly adjust or retract. When facing deep stamping operations, there is a risk of hindering the smooth downward movement of the hydraulic stamping plate, thus interfering with the normal processing flow. Summary of the Utility Model

[0004] In view of this, the utility model provides a clamping device for a four-column hydraulic press, which can cooperate with the clamping mechanism and the clamping mechanism to facilitate relevant staff to quickly clamp the workpiece, simplify the operation process, and avoid the situation that the sliding clamp block hinders the normal downward movement of the lower pressing plate during the processing.

[0005] To solve the above technical problems, the utility model provides a clamping device for a four-column hydraulic press, including an installation shell and a clamping mechanism arranged inside the installation shell. The clamping mechanism includes chutes symmetrically arranged at the four corners of the upper surface of the installation shell. Movable clamp blocks are slidably connected in the chutes. Avoidance components are arranged in the movable clamp blocks. The avoidance components include sliding clamp blocks respectively slidably connected vertically in the movable clamp blocks. Springs are arranged between the top wall surfaces of the sliding holes arranged in the middle of the lower surfaces of the sliding clamp blocks and the bottom wall surfaces of the vertically adjacent movable clamp blocks.

[0006] The clamping mechanism further includes fixing columns respectively arranged in the middle of the lower surfaces of the movable clamp blocks. The middle of the top wall surface of the installation shell is rotatably connected with a rotating disk. Oblique openings are evenly distributed in a ring on the rotating disk. The fixing columns are respectively slidably connected with the vertically adjacent oblique openings. A motor is arranged in the middle of the bottom wall surface of the installation shell. The upper end of the output shaft of the motor is fixedly connected with the middle of the lower end surface of the rotating disk; the motor is electrically connected with an external single chip.

[0007] The avoidance assembly further includes rotating grooves respectively and vertically and evenly arranged on the inner side surfaces of the sliding clamping blocks, and rotating columns are rotatably connected in the rotating grooves; the avoidance assembly further includes guide pipes respectively arranged in the middle of the bottom wall surfaces of the movable clamping blocks, the guide pipes are respectively slidably connected with the vertically adjacent sliding holes, and the springs are respectively located inside the vertically adjacent guide pipes; the inner arc surfaces of the rotating columns are respectively flush with the inner side surfaces of the vertically adjacent movable clamping blocks.

[0008] Mounting plates are provided in the middle of the four sides of the lower surface of the mounting shell.

[0009] The beneficial effects of the above technical solutions of the present utility model are as follows:

[0010] 1. When it is necessary to clamp a workpiece, relevant staff operate the external single-chip control motor. The rotation of the output shaft of the motor drives the rotating disk and the inclined opening to rotate synchronously. When the inclined opening rotates, it drives the movable clamping block and its affiliated mechanism to move centripetally or outward along the sliding groove through the fixed column, so as to realize the clamping or release of the workpiece. The four-way clamping method can ensure the four-way balanced fixation of the workpiece, improve the processing stability, facilitate the relevant staff to quickly clamp the workpiece, and simplify the operation process.

[0011] 2. After the workpiece is clamped and fixed, the four-column hydraulic press operates to process the workpiece. When deep stamping operation is required, the lower pressing plate on the four-column hydraulic press moves downward, which will press down the sliding clamping block. The sliding clamping block overcomes the elastic force of the spring and moves downward along the guide pipe. When the sliding clamping block blocks the movement of the lower pressing plate on the four-column hydraulic press, the sliding clamping block retracts into the movable clamping block for avoidance, avoiding the situation that the sliding clamping block hinders the normal downward movement of the lower pressing plate during the processing, and the rotating column can reduce the friction coefficient between the sliding clamping block and the workpiece. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the main structure of a clamping device for a four-column hydraulic press of the present utility model;

[0013] Figure 2 is a schematic diagram of the structure of the clamping mechanism of the present utility model;

[0014] Figure 3 is a schematic diagram of the structure of the avoidance assembly of the present utility model;

[0015] Figure 4 is a schematic diagram of the enlarged structure at A of the present utility model.

[0016] Description of the reference numerals: 100, mounting shell; 200, sliding groove; 201, movable clamping block; 202, fixed column; 203, rotating disk; 204, inclined opening; 205, motor; 300, sliding clamping block; 301, spring; 302, rotating column; 303, guide pipe; 400, mounting plate. Detailed implementation mode

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will describe the technical solutions of the embodiments of the present utility model in conjunction with the attached Figures 1-4 , and describe the technical solutions of the embodiments of the present utility model clearly and completely. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present utility model.

[0018] As Figures 1-4 shown:

[0019] This embodiment provides a clamping device for a four-column hydraulic press, including an installation shell 100 and a clamping mechanism arranged inside the installation shell 100. The clamping mechanism includes sliding grooves 200 symmetrically arranged at the four corners of the upper surface of the installation shell 100. Movable clamping blocks 201 are slidably connected in the sliding grooves 200. Avoidance components are arranged in the movable clamping blocks 201. The avoidance components include sliding clamping blocks 300 respectively slidably connected vertically in the movable clamping blocks 201. Springs 301 are arranged between the top wall surfaces of the sliding holes arranged in the middle of the lower surfaces of the sliding clamping blocks 300 and the bottom wall surfaces of the vertically adjacent movable clamping blocks 201; the clamping mechanism further includes fixing columns 202 respectively arranged in the middle of the lower surfaces of the movable clamping blocks 201. The middle of the top wall surface of the installation shell 100 is rotatably connected with a rotating disk 203. The rotating disk 203 is provided with obliquely-shaped openings 204 evenly distributed in a ring shape. The fixing columns 202 are respectively slidably connected with the vertically adjacent obliquely-shaped openings 204. The middle of the bottom wall surface of the installation shell 100 is provided with a motor 205. The upper end of the output shaft of the motor 205 is fixedly connected with the middle of the lower end surface of the rotating disk 203; the motor 205 is electrically connected to an external single chip.

[0020] As Figures 1-4 shown, the avoidance components further include rotating grooves respectively arranged vertically and evenly on the inner side surfaces of the sliding clamping blocks 300. Rotating columns 302 are rotatably connected in the rotating grooves; the avoidance components further include guide tubes 303 respectively arranged in the middle of the bottom wall surfaces of the movable clamping blocks 201. The guide tubes 303 are respectively slidably connected with the vertically adjacent sliding holes. The springs 301 are respectively located inside the vertically adjacent guide tubes 303; the inner arc surfaces of the rotating columns 302 are respectively flush with the inner side surfaces of the vertically adjacent movable clamping blocks 201.

[0021] The working principle of a clamping device for a four-column hydraulic press provided by the present utility model is as follows: When it is necessary to clamp a workpiece, relevant staff operate the external single-chip control motor 205. The rotation of the output shaft of the motor 205 drives the rotating disk 203 and the inclined opening 204 to rotate synchronously. When the inclined opening 204 rotates, it drives the movable clamping block 201 and its attached mechanism to move centripetally or outward along the sliding groove 200 through the fixed column 202, thereby realizing the clamping or release of the workpiece. The four-way clamping method can ensure the four-way balanced fixation of the workpiece, improve the processing stability, facilitate the relevant staff to quickly clamp the workpiece, simplify the operation process. After the workpiece is clamped and fixed, the four-column hydraulic press operates to process the workpiece. When deep stamping operation is required, the lower platen on the four-column hydraulic press moves downward, which will press down the sliding clamping block 300. The sliding clamping block 300 overcomes the elastic force of the spring 301 and moves downward along the guide tube 303. When the sliding clamping block 300 blocks the movement of the lower platen on the four-column hydraulic press, the sliding clamping block 300 retracts into the movable clamping block 201 for avoidance, so as to prevent the situation that the sliding clamping block 300 hinders the normal downward movement of the lower platen during the processing. The rotating column 302 can reduce the friction coefficient between the sliding clamping block 300 and the workpiece.

[0022] As Figures 1-3 shown, mounting plates 400 are provided in the middle of the four sides of the lower surface of the mounting shell 100, and the mounting plates 400 facilitate the relevant staff to fix the mounting shell 100 and its attached mechanism.

[0023] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "mounting", "connecting" and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] The above is the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle described in the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A clamping device for a four-column hydraulic press, characterized in that: It includes an installation shell (100) and a clamping mechanism arranged inside the installation shell (100). The clamping mechanism includes chutes (200) symmetrically arranged at the four corners of the upper surface of the installation shell (100). A movable clamping block (201) is slidably connected in each chute (200). An avoidance component is arranged in each movable clamping block (201). The avoidance component includes a sliding clamping block (300) vertically slidably connected in the movable clamping block (201) respectively. A spring (301) is arranged between the top wall surface of the sliding hole arranged in the middle of the lower surface of the sliding clamping block (300) and the bottom wall surface of the vertically adjacent movable clamping block (201).

2. The clamping device for a four-column hydraulic press according to claim 1, characterized in that: The clamping mechanism further includes fixing columns (202) respectively arranged in the middle of the lower surface of the movable clamping block (201). A rotating disk (203) is rotatably connected to the middle of the top wall surface of the installation shell (100). The rotating disk (203) is provided with obliquely-shaped openings (204) evenly distributed in a ring shape. The fixing columns (202) are respectively slidably connected to the vertically adjacent obliquely-shaped openings (204). A motor (205) is arranged in the middle of the bottom wall surface of the installation shell (100). The upper end of the output shaft of the motor (205) is fixedly connected to the middle of the lower end surface of the rotating disk (203).

3. The clamping device for a four-column hydraulic press according to claim 1, characterized in that: The avoidance component further includes rotating grooves respectively arranged vertically and evenly on the inner side surfaces of the sliding clamping blocks (300). A rotating column (302) is rotatably connected in each rotating groove.

4. The clamping device for a four-column hydraulic press according to claim 1, characterized in that: The avoidance component further includes guide tubes (303) respectively arranged in the middle of the bottom wall surface of the movable clamping block (201). The guide tubes (303) are respectively slidably connected to the vertically adjacent sliding holes. The springs (301) are respectively located inside the vertically adjacent guide tubes (303).

5. A clamping device for a four-column hydraulic press according to claim 1, characterized in that: Mounting plates (400) are arranged in the middle of the four sides of the lower surface of the installation shell (100).

6. The clamping device for a four-column hydraulic press according to claim 3, characterized in that: The inner arc surfaces of the rotating columns (302) are flush with the inner side surfaces of the vertically adjacent movable clamping blocks (201) respectively.

7. A clamping device for a four-column hydraulic press according to claim 2, wherein: The motor (205) is electrically connected to an external single chip.

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