Clamping tool and polishing workbench

Abstract

The utility model discloses a clamping tool and a polishing workbench, and relates to the field of polishing dust collection workbenches. The clamping tool comprises two moving plates which are symmetrically arranged; the driving mechanism is used for driving the two moving plates to be close to or far away from each other and is mounted on the lower sides of the two moving plates; a plurality of rows of through holes are formed in the moving plate at equal intervals; the friction ring is fixedly connected in the through hole; compared with a traditional clamping tool, through cooperative use of the movable plate, the friction ring, the multiple rows of limiting clamping rods, the driving mechanism, the limiting air bag, the electromagnetic valve, the air supply assembly and other components, when a workpiece needs to be clamped and fixed to a grinding workbench, the workpiece can be clamped by the limiting clamping rods in a multi-point limiting mode, and the workpiece can be clamped and fixed to the grinding workbench. The clamping tool is simple in structure and stable and fixed to the grinding workbench, the workpiece clamping and fixing effect can be guaranteed, the clamping tool can be suitable for stable clamping of special-shaped workpieces, and the applicability of the clamping tool is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding and dust collecting workbenches, in particular to a clamping tool and a grinding workbench. Background Art

[0002] The grinding workbench is a dust collection device that integrates exhaust device and dust removal device, and has lighting, silencer and built-in cartridge dust removal system. This workbench is designed to remove fine suspended particles floating in the air without affecting the workers' vision and operation. It is an ideal choice for workpiece grinding.

[0003] When in use, first start the dust collection device in the grinding workbench, then fix the workpiece on the table by clamping tooling, and then the worker can grind the workpiece with a hand-held grinder or a grinding robot arm.

[0004] However, the existing clamping tooling can only clamp and position some workpieces with relatively regular shapes when clamping and fixing the workpiece. For some irregular workpieces, there may be a problem of loose clamping, so that the efficiency of grinding them may be affected. In view of this, the present utility model is specially proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a clamping tool and a grinding workbench that can overcome the above problems or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a clamping tool, comprising: two symmetrically arranged movable plates; a driving mechanism for driving the two movable plates to move closer to or away from each other, installed on the lower side of the two movable plates; a plurality of rows of through holes equidistantly provided on the movable plates; a friction ring, fixedly connected in the through hole; a positioning clamping rod, transversely passing through the friction ring, and slidingly attached to the friction ring; a limiting airbag, fixedly connected to the side where the two movable plates are away from each other, and located between each row of positioning clamping rods; an upper and lower end of the limiting airbag are respectively provided with inlet and exhaust ports, and a one-way valve and a solenoid valve are respectively installed in the inlet and exhaust ports of the limiting airbag; an air supply component for controlling the expansion of the limiting airbag is installed above the movable plate.

[0007] Furthermore, the driving mechanism includes a motor and a bidirectional screw, the output end of the motor is fixedly connected to one end of the bidirectional screw, the two movable plates are symmetrically arranged on the bidirectional screw and threadedly connected to the bidirectional screw, a limit rod is arranged on one side of the bidirectional screw, and a through opening is opened on the movable plate for use with the limit rod.

[0008] Furthermore, the air supply assembly includes a diverter box, an air supply pipe and a telescopic air pipe. The diverter box is fixedly connected to the upper end of the movable plate. The diverter box and the air inlet of each limiting airbag are connected through a connecting air pipe. The air supply pipe is arranged above the movable plate, and the diverter box and the air supply pipe are connected through a telescopic air pipe.

[0009] The grinding workbench adopts a clamping tool and also includes a workbench body. The bidirectional screw is rotatably connected to the workbench body, and the motor, the limit rod and the air pipe are all fixedly connected to the workbench body.

[0010] In order to improve the efficiency of grinding the workpiece, further, the movable plates are symmetrically arranged in two groups, the bidirectional screw rods are arranged in two groups, the two bidirectional screw rods are fixedly connected, and each group of two movable plates are respectively threadedly connected to adjacent bidirectional screw rods.

[0011] In order to prevent the bidirectional lead screw and the limit rod from bending and deforming due to the downward pressure of the workpiece, further, two load-bearing wheels are symmetrically connected to the bottom of the movable plate, and the load-bearing wheels roll on the table surface of the workbench body.

[0012] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model uses the movable plate, friction ring, multi-row limit clamping rod, driving mechanism and limit airbag, solenoid valve, air supply assembly and other components in coordination. Compared with the traditional clamping tool, when the workpiece needs to be clamped and fixed on the polishing workbench, the workpiece can be firmly fixed on the polishing workbench under the multi-point limit clamping of the limit clamping rod, which can not only ensure the clamping and fixing effect of the workpiece, but also can be used for the stable clamping of heterogeneous workpieces, effectively improving the applicability of the clamping tool.

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the structure of the clamping tooling proposed by the utility model;

[0016] Figure 2 This is a structural schematic diagram of the grinding workbench proposed by the utility model;

[0017] Figure 3 The utility model provides a schematic structural diagram of a movable plate, a load-bearing wheel, a friction ring, a positioning clamping rod, a diverter box, a limit air bag and a telescopic air pipe in the clamping tooling.

[0018] In the figure: 1. workbench body; 2. motor; 201. bidirectional screw; 202. limit rod; 3. moving plate; 301. load-bearing wheel; 302. friction ring; 4. positioning clamping rod; 401. diverter box; 402. limit air bag; 403. air pipe; 404. telescopic air pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0020] Embodiment 1:

[0021] Reference Figure 1-Figure 3 The clamping tooling includes: two symmetrically arranged moving plates 3; a driving mechanism for driving the two moving plates 3 to move closer to or away from each other, which is installed on the lower side of the two moving plates 3; a plurality of rows of through holes are equidistantly provided on the moving plates 3; a friction ring 302, which is fixedly connected in the through hole; a positioning clamping rod 4, which passes through the friction ring 302 horizontally and slides against the friction ring 302; a limiting airbag 402, which is fixedly connected to the side where the two moving plates 3 are away from each other, and is located between each row of positioning clamping rods 4; inlet and outlet ports are respectively provided at the upper and lower ends of the limiting airbag 402, and a one-way valve and a solenoid valve are respectively installed in the inlet and outlet ports of the limiting airbag 402; an air supply component for controlling the expansion of the limiting airbag 402 is installed above the moving plate 3.

[0022] The driving mechanism includes a motor 2 and a bidirectional screw rod 201. The output end of the motor 2 is fixedly connected to one end of the bidirectional screw rod 201. Two movable plates 3 are symmetrically arranged on the bidirectional screw rod 201 and are threadedly connected to the bidirectional screw rod 201. A limiting rod 202 is arranged on one side of the bidirectional screw rod 201. A through opening is opened on the movable plate 3 for use with the limiting rod 202.

[0023] The air supply assembly includes a diverter box 401, an air supply pipe 403 and a telescopic air pipe 404. The diverter box 401 is fixedly connected to the upper end of the movable plate 3. The diverter box 401 and the air inlet of each limiting airbag 402 are connected through a connecting air pipe. The air supply pipe 403 is arranged above the movable plate 3. The diverter box 401 and the air supply pipe 403 are connected through a telescopic air pipe 404.

[0024] When the staff needs to use the grinding workbench to absorb the dust generated during the grinding process, first install the clamping tool on the table top of the grinding workbench, then the staff can place the workpiece to be ground between the two movable plates 3, and then start the motor 2, the motor 2 will drive the bidirectional screw 201 to rotate, the bidirectional screw 201 will drive the two movable plates 3 to approach each other with the cooperation of the limit rod 202, the movable plate 3 will drive the positioning clamping rod 4 to approach the workpiece, when the positioning clamping rod 4 contacts the workpiece, the two movable plates 3 continue to be controlled to approach each other, when the workpiece and multiple positioning clamping rods 4 are all against each other to form a multi-point clamping, at this time, gas can be transported to the gas pipe 403 through the external gas supply equipment, and then the gas in the gas pipe 403 will be transported into the distribution through the telescopic gas pipe 404 The flow box 401 is inside, and then the diversion box 401 will supply air to the multiple limiting air bags 402 through the connecting air pipes, and then the limiting air bags 402 will expand under the action of air pressure and come into close contact with the adjacent positioning clamping rods 4, so that the positioning clamping rods 4 can be limited and fixed, so that the positioning clamping rods 4 can firmly clamp and fix the workpiece, and then the staff can use a handheld grinder to grind the surface of the workpiece. Since a friction ring 302 is provided in the through-hole of the movable plate 3, after the positioning clamping rod 4 contacts the workpiece, the positioning clamping rod 4 will be tightly against the workpiece under the action of the friction force provided by the friction ring 302, ensuring that when the limiting air bag 402 limits and fixes the positioning clamping rod 4, the positioning clamping rod 4 can firmly clamp and fix the workpiece, effectively ensuring the clamping and fixing effect of the workpiece.

[0025] When the workpiece is polished, the motor 2 can be used to control the bidirectional screw 201 to rotate in the opposite direction, so that the two movable plates 3 move away from each other, and then the positioning clamping rod 4 will release the workpiece, and then the staff can remove the polished workpiece from the clamping tooling.

[0026] As the two movable plates 3 continue to move away from each other, when one end of the positioning clamping rod 4 approaches the limiting air bag 402 and abuts against the side wall of the polishing workbench, the solenoid valve in the air outlet of the limiting air bag 402 can be opened, and the gas in the limiting air bag 402 will be discharged through the exhaust port. Then the limiting air bag 402 will release the limiting effect on the positioning clamping rod 4, and the positioning clamping rod 4 will return to its initial position under the abutment of the side wall of the polishing workbench, so that the clamping ends of the positioning clamping rod 4 on the same side are on the same plane, so that they can be used next time.

[0027] Embodiment 2:

[0028] Reference Figure 1-Figure 3, a polishing workbench, which adopts the clamping tool of Example 1, also includes a workbench body 1, a bidirectional screw rod 201 rotatably connected to the workbench body 1, and a motor 2, a limit rod 202 and an air pipe 403 are all fixedly connected to the workbench body 1.

[0029] By arranging a clamping tool on the workbench body 1, when a worker is grinding a workpiece on the grinding workbench, workpieces of different shapes can be stably clamped and fixed, which effectively improves the applicability of the grinding workbench.

[0030] Embodiment 3:

[0031] Reference Figure 1-Figure 3 , a grinding workbench is basically the same as Example 2, and further: two groups of movable plates 3 are symmetrically arranged, two bidirectional screw rods 201 are arranged, and the two bidirectional screw rods 201 are fixedly connected, and each group of two movable plates 3 is respectively threadedly connected to the adjacent bidirectional screw rods 201. By symmetrically arranging two groups of movable plates 3 and two fixedly connected bidirectional screw rods 201 on the workbench body 1, when using the grinding workbench, two workpieces can be clamped and fixed at the same time, thereby facilitating improving the efficiency of grinding the workpieces.

[0032] Two load-bearing wheels 301 are symmetrically connected to the bottom of the movable plate 3, and the load-bearing wheels 301 roll on the table surface of the workbench body 1. Through the setting of the load-bearing wheels 301, when it is necessary to clamp and position a workpiece with a larger mass, it can avoid the bending deformation of the bidirectional screw rod 201 and the limit rod 202 due to the downward pressure of the workpiece, thereby affecting the transmission of the movable plate 3, effectively ensuring the normal operation of the driving mechanism.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. Clamping tool, characterized in that: include: Two movable plates (3) arranged symmetrically; A driving mechanism for driving the two movable plates (3) to move closer to or farther from each other, mounted on the lower sides of the two movable plates (3); The movable plate (3) is provided with a plurality of rows of through openings at equal intervals; A friction ring (302) is fixedly connected in the through opening; A positioning clamping rod (4) is transversely passed through the friction ring (302) and is slidably attached to the friction ring (302); A limiting airbag (402) is fixedly connected to the side of the two movable plates (3) that are away from each other and is located between each row of positioning clamping rods (4); The upper and lower ends of the limiting airbag (402) are respectively provided with inlet and outlet ports, and a one-way valve and a solenoid valve are respectively installed in the inlet and outlet ports of the limiting airbag (402); An air supply component for controlling the expansion of the limiting airbag (402) is installed above the movable plate (3).

2. The clamping tool according to claim 1, characterized in that: The driving mechanism comprises a motor (2) and a bidirectional screw (201); the output end of the motor (2) is fixedly connected to one end of the bidirectional screw (201); the two movable plates (3) are symmetrically arranged on the bidirectional screw (201) and are threadedly connected to the bidirectional screw (201); a limit rod (202) is arranged on one side of the bidirectional screw (201); and a through opening for use with the limit rod (202) is opened on the movable plate (3).

3. The clamping tool according to claim 2, characterized in that: The air supply assembly comprises a diverter box (401), an air delivery pipe (403) and a telescopic air pipe (404); the diverter box (401) is fixedly connected to the upper end of the movable plate (3); the diverter box (401) and the air inlet of each limiting air bag (402) are connected via a connecting air pipe; the air delivery pipe (403) is arranged above the movable plate (3); and the diverter box (401) and the air delivery pipe (403) are connected via a telescopic air pipe (404).

4. A grinding workbench, using the clamping fixture according to claim 3, characterized in that: It also includes a workbench body (1), the bidirectional screw rod (201) is rotatably connected to the workbench body (1), and the motor (2), the limit rod (202) and the air pipe (403) are all fixedly connected to the workbench body (1).

5. The grinding workbench according to claim 4, characterized in that: The movable plates (3) are symmetrically arranged in two groups, and the bidirectional screw rods (201) are arranged in two groups. The two bidirectional screw rods (201) are fixedly connected to each other, and each group of two movable plates (3) are respectively threadedly connected to adjacent bidirectional screw rods (201).

6. The grinding workbench according to claim 4, characterized in that: Two bearing wheels (301) are symmetrically connected to the bottom of the movable plate (3), and the bearing wheels (301) roll on the table surface of the workbench body (1).

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