High-precision hydraulic clamp

Abstract

The utility model provides a high-precision hydraulic clamp, which belongs to the technical field of clamps and comprises a base, a mounting seat and a top seat. The interior of the base is hollow to form a mounting cavity, and a moving opening communicating with the mounting cavity is formed in the bottom. A moving plate is slidably arranged in the moving opening; the interior of the top seat is hollow to form an accommodating cavity; a hydraulic cylinder is arranged in the accommodating cavity; the hydraulic cylinder drives one moving plate to move, the moving plate drives the other moving plate to move through the rack and gear combination, and the two moving plates get close to each other or get away from each other. Two foldable dust blocking curtains are arranged in the movable opening; the two dust blocking curtains are arranged on the two sides of the movable plate correspondingly. The hydraulic cylinder is covered with the top seat, so that the hydraulic cylinder is surrounded and closed, and dust and impurities in a processing workshop can be prevented from affecting use of the hydraulic cylinder. Meanwhile, the dust blocking curtain is arranged at the movable opening in the bottom of the base, and dust, chippings and other impurities can be prevented from entering the device through the movable opening.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to a high-precision hydraulic clamp. Background Technology

[0002] In the field of machining, hydraulic clamps, with their significant advantages such as large clamping force, fast response speed, and automated control, are widely used in various high-precision machining scenarios, greatly improving production efficiency and machining accuracy. However, existing hydraulic clamps have revealed problems with poor sealing performance during actual use. The existing sealing structure design has defects and is unable to effectively prevent the intrusion of dust, debris, and other impurities. When dust enters the hydraulic clamp, it will accelerate the wear of key components such as hydraulic pumps, valves, and cylinders, leading to a decrease in the fit accuracy between components. Moreover, when dust mixes with hydraulic oil, it will cause hydraulic oil contamination, reduce the lubrication and sealing performance of the hydraulic oil, and thus cause hydraulic system leakage, resulting in unstable clamping force and inability to meet the stringent positioning and clamping requirements of high-precision machining. Therefore, this utility model provides a high-precision hydraulic clamp. Utility Model Content

[0003] The purpose of this invention is to provide a high-precision hydraulic clamp.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:

[0005] A high-precision hydraulic clamp includes: a base, a mounting base, and a top base; the mounting base is disposed between the base and the top base and is fixedly connected to both.

[0006] The base is hollow inside to form an installation cavity, and a movable opening communicating with the installation cavity is provided at the bottom; there are two movable openings, which are symmetrically distributed along the center line of the base, and a movable plate is slidably arranged inside them; a connecting plate is fixedly arranged on the top of the movable plate; the connecting plate is slidably engaged with a sliding rod fixedly arranged inside the installation cavity;

[0007] The top seat is hollow inside to form a receiving cavity; a hydraulic cylinder is installed inside the receiving cavity;

[0008] One of the connecting plates is provided with a connecting rod on its top; the connecting rod extends from a through groove formed on the top of the base and the mounting seat into the top seat and is fixedly connected to the end of the piston rod of the hydraulic cylinder;

[0009] A rack is fixedly provided on the connecting plate; the two racks mesh with a gear rotatably connected inside the base between the two connecting plates, and the two racks respectively cooperate with the two sides of the gear;

[0010] Two foldable dust curtains are provided inside the movable opening; the two dust curtains are respectively located on both sides of the movable plate, and the two ends of the dust curtains are respectively fixedly connected to the end wall of the movable opening and the movable plate.

[0011] The movable plate is equipped with a clamping plate.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme, connecting blocks are provided at the lower ends of the connecting plate; the connecting blocks are slidably sleeved on the sliding rod.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme, a rack fixing sleeve is provided in the mounting cavity; the rack fixing sleeve is sleeved on the outside of the rack.

[0014] Based on the above scheme and as a preferred embodiment of the above scheme, a horizontal bar is provided inside the dust curtain; both ends of the horizontal bar extend into the grooves opened on the side wall of the movable opening.

[0015] Based on the above scheme and as a preferred embodiment of the above scheme, a sliding limit block is provided at the end of the horizontal bar; the sliding limit block is slidably fitted in the groove.

[0016] The beneficial effects of this utility model are as follows: The utility model features a top seat on the outer cover of the hydraulic cylinder, achieving complete enclosure and sealing of the hydraulic cylinder. This prevents dust and impurities in the processing workshop from affecting the use of the hydraulic cylinder, thus improving the safety of the hydraulic clamp. Simultaneously, a dust curtain is installed at the movable opening at the bottom of the base, preventing dust, debris, and other impurities from entering the device through the movable opening. This avoids affecting the internal transmission mechanism components, reduces wear on each component, and maintains high-precision transmission. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective.

[0019] Figure 3 This is a schematic diagram of the structure of the present invention after the top seat is concealed.

[0020] Figure 4 This is a partial structural diagram of the present utility model.

[0021] Figure 5 This is a schematic diagram of the dust curtain structure of this utility model.

[0022] In the diagram: 1. Base; 2. Mounting seat; 3. Top seat; 4. Movable opening; 5. Movable plate; 6. Connecting plate; 7. Slide rod; 8. Connecting rod; 9. Through groove; 10. Hydraulic cylinder; 11. Rack; 12. Gear; 13. Dust curtain; 14. Clamping plate; 15. Connecting block; 16. Rack fixing sleeve; 17. Crossbar; 18. Sliding limit block. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 3 As shown, a high-precision hydraulic clamp includes: a base 1, a mounting base 2, and a top base 3. The mounting base 2 is disposed between the base 1 and the top base 3 and is fixedly connected to both to form a whole.

[0025] The base 1 has a hollow interior forming an installation cavity, with two movable openings 4 at the bottom communicating with the cavity. These openings 4 are symmetrically distributed along the centerline of the base 1. A movable plate 5 is slidably mounted within each opening 4, with its top located inside the installation cavity and its bottom below the base 1. A connecting plate 6 is fixedly mounted on the top of the movable plate 5, and a clamping plate 14 is mounted on its bottom. The connecting plate 6 slidably engages with a sliding rod 7 fixed inside the installation cavity, allowing the movable plate 5 to move horizontally back and forth. Specifically, connecting blocks 15 are located at both ends of the connecting plate 6, and these blocks 15 slidably mount onto the sliding rods 7. The two sliding rods 7 ensure the stability of the movable plate 5's sliding motion.

[0026] The top seat 3 has a hollow interior forming a receiving cavity, and a hydraulic cylinder 10 is installed inside the receiving cavity.

[0027] like Figure 4 As shown, one of the connecting plates 6 has a vertically upward connecting rod 8 on its top. This connecting rod 8 extends from a through groove 9 formed on the top of the base 1 and the mounting seat 2 into the top seat 3, and is fixedly connected to the end of the piston rod of the hydraulic cylinder 10. The through groove 9 passes through the base 1, the mounting seat 2, and the top seat 3. The hydraulic cylinder 10 drives the moving plate to move back and forth via the connecting rod 8.

[0028] A rack 11 is fixedly mounted on the connecting plate 6. Two racks 11 mesh with a gear 12 rotatably connected to the base 1 between the two connecting plates 6, with the two racks 11 respectively engaging with both sides of the gear 12. The gear 12 is located at the center of the base 1. One rack 11 moves with the moving plate 5, driving the gear 12 to rotate. The rotation of the gear 12 drives the other rack 11 to move, thus moving the two moving plates 5 closer together or further apart. Preferably, a rack fixing sleeve 16 is provided in the mounting cavity. The rack fixing sleeve 16 is fitted over the rack 11 and slidably engages with it to improve the stability of the rack 11's movement.

[0029] Two foldable dust curtains 13 are installed inside the movable opening 4. The two dust curtains 13 are respectively located on both sides of the movable plate 5, and the two ends of the dust curtains 13 are fixedly connected to the end wall of the movable opening 4 and the movable plate 5, respectively. The dust curtains 13 can close the movable opening 4 to prevent external dust, debris and other impurities from entering the device.

[0030] At the same time, such as Figure 5 As shown, a horizontal bar 17 is provided inside the dust curtain 13, with both ends of the horizontal bar 17 extending into grooves formed on the side wall of the movable opening 4. The horizontal bar 17 provides support, preventing the dust curtain 13 from collapsing or rising and thus compromising the sealing effect on the movable opening 4. Furthermore, a sliding limit block 18 is provided at the end of the horizontal bar 17, which slides within the groove to prevent the horizontal bar 17 from disengaging from the groove, thereby improving structural stability.

[0031] Working process: Hydraulic cylinder 10 drives connecting rod 8 to move, connecting rod 8 drives first moving plate 5 to move, first moving plate 5 drives corresponding rack 11 to move, rack 11 drives gear 12 to rotate, gear 12 drives another rack 11 to move, second moving plate 5 moves accordingly, realizing the mutual approach or distance of two clamping plates 14. Two dust curtains 13 unfold or fold as the moving plates 5 move, keeping the moving opening 4 closed at all times.

[0032] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-precision hydraulic clamp, characterized in that, include: The base (1), the mounting base (2), and the top base (3) are provided; the mounting base (2) is disposed between the base (1) and the top base (3) and is fixedly connected to both. The base (1) is hollow inside to form an installation cavity, and a movable opening (4) communicating with the installation cavity is provided at the bottom; there are two movable openings (4), which are symmetrically distributed along the center line of the base (1), and a movable plate (5) is slidably arranged inside them; a connecting plate (6) is fixedly arranged on the top of the movable plate (5); the connecting plate (6) is slidably engaged with a slide rod (7) fixedly arranged inside the installation cavity; The top seat (3) is hollow inside to form a receiving cavity; a hydraulic cylinder (10) is provided inside the receiving cavity; One of the connecting plates (6) is provided with a connecting rod (8) on its top; the connecting rod (8) extends from a through groove (9) opened on the top of the base (1) and the mounting seat (2) into the top seat (3) and is fixedly connected to the piston rod end of the hydraulic cylinder (10); A rack (11) is fixedly provided on the connecting plate (6); the two racks (11) mesh with a gear (12) rotatably connected between the two connecting plates (6) inside the base (1), and the two racks (11) are respectively engaged on both sides of the gear (12); Two foldable dust curtains (13) are provided inside the movable opening (4); the two dust curtains (13) are respectively provided on both sides of the movable plate (5), and the two ends of the dust curtains (13) are respectively fixedly connected to the end wall of the movable opening (4) and the movable plate (5); The movable plate (5) is provided with a clamping plate (14).

2. The high-precision hydraulic clamp according to claim 1, characterized in that, Connecting blocks (15) are provided at both ends of the connecting plate (6); the connecting blocks (15) are slidably sleeved on the slide rod (7).

3. A high-precision hydraulic clamp according to claim 1, characterized in that, A rack fixing sleeve (16) is provided inside the mounting cavity; the rack fixing sleeve (16) is sleeved on the outside of the rack (11).

4. A high-precision hydraulic clamp according to claim 1, characterized in that, The dust curtain (13) is provided with a horizontal bar (17); the two ends of the horizontal bar (17) extend into the grooves opened on the side wall of the movable opening (4).

5. A high-precision hydraulic clamp according to claim 4, characterized in that, The end of the horizontal bar (17) is provided with a sliding limit block (18); the sliding limit block (18) is slidably fitted in the groove.

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