Quick clamping device

Abstract

The invention relates to the field of quick release structures, in particular to a quick clamping device. The quick clamping device comprises a shaft rod, an operation part is installed at the near end of the shaft rod, the far end of the shaft rod is in threaded connection with an adjusting nut, a clamping block sliding along the shaft rod is installed between the operation part and the adjusting nut, and the operation part is operated to axially abut against the adjusting nut to enable the clamping block and the adjusting nut to jointly clamp a plurality of objects to be clamped together. The clamping blocks can axially extend and retract and can be fixed after extending. And when a plurality of objects to be clamped loosen in a clamping state, adjustment can be realized only by operating the clamping block at the near end without operating the adjusting nut at the far end, so that the operation is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of quick release structure, in particular to a quick clamping device. BACKGROUND

[0002] A quick clamping device comprises a shaft, a handle is installed at the proximal end of the shaft as an operating part, and an adjusting nut is threadedly connected to the distal end of the shaft. A clamping block is slidably sleeved between the handle and the adjusting nut. During installation, the operator first unscrews the adjusting nut from the distal end of the shaft, then successively sleeves a plurality of clamped objects into the distal end of the shaft, and then screws the adjusting nut back to the distal end of the shaft until it is in close contact with the clamped objects. The adjusting nut and the clamping block together achieve pre-clamping of the plurality of clamped objects. The operator can then pull the handle in the forward direction to axially push the clamping block towards the adjusting nut, so that the clamping block and the adjusting nut together clamp the plurality of clamped objects together. The operator can pull the handle in the reverse direction to release the clamping of the clamping block. After the handle of the quick clamping device is pulled multiple times, the contact surface between the handle and the clamping block is worn, and the clamped objects are deformed after being clamped multiple times, resulting in loosening of the plurality of clamped objects in the clamped state. The adjusting nut needs to be turned to re-clamp and fix the plurality of clamped objects. The adjusting nut is generally exposed at a position convenient for operation. The operator holds the handle with one hand and turns the adjusting nut with the other hand to move the adjusting nut axially towards the proximal end relative to the shaft until the adjusting nut and the clamping block together re-clamp the plurality of clamped objects together. In some application scenarios, the adjusting nut is blocked (for example, installed below the clamped objects and blocked by other components, the clamped objects need to be lifted or turned over to achieve adjustment; or not installed below the clamped objects, but installed beside the clamped objects and blocked by other components), so the operation is not convenient when adjustment is needed. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a quick clamping device, which can achieve adjustment without operating the adjusting nut at the distal end when the plurality of clamped objects are loosened in the clamped state, and the operation is convenient.

[0004] To solve the above problems, the present application provides a quick clamping device, which comprises a shaft, an operating part is installed at the proximal end of the shaft, and an adjusting nut is threadedly connected to the distal end of the shaft. A clamping block is installed between the operating part and the adjusting nut and slides along the shaft. The operating part is axially pushed towards the adjusting nut by operation, so that the clamping block and the adjusting nut together clamp the plurality of clamped objects together. The clamping block can be axially elongated and shortened, and can be fixed after elongation.

[0005] Further, the clamping block can be axially extended and retracted, specifically, the distal end of the clamping block can be axially elongated and shortened.

[0006] Further, a fine adjustment part is installed on the clamping block and can move axially along the clamping block. The clamping block is axially elongated and shortened by the axial movement of the fine adjustment part relative to the clamping block.

[0007] Further, the fine adjustment part is a fine adjustment nut threaded on the clamping block.

[0008] Further, the operation part is an eccentric handle.

[0009] Further, the proximal end surface of the clamping block is provided with an arc-shaped groove to fit the eccentric part of the eccentric handle. Beneficial effects: When the plurality of clamped objects are loosened, the adjustment can be realized by operating the clamping block at the proximal end only, without operating the adjustment nut at the distal end, which is convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural schematic diagram of the quick clamping device.

[0011] Figure 2 is a structural schematic diagram of the quick clamping device clamping the supporting bracket and the adjustment edge together.

[0012] Figure 3 is Figure 2 is an enlarged schematic diagram of A in FIG.

[0013] Figure 4 is Figure 2 is an enlarged schematic diagram of B in FIG.

[0014] Figure 5 is a sectional view of the quick clamping device clamping the supporting bracket and the adjustment edge together.

[0015] SYMBOL EXPLANATION: 1-shaft; 2-eccentric handle; 3-adjustment nut; 4-clamping block; 5-fine adjustment nut; 6-pivot; 7-supporting bracket; 8-glass mold; 21-eccentric part of eccentric handle; 41-arc-shaped groove; 71- accommodating position; 72-adjustment edge; 73-rail; 730-rail groove; 731-rear end of rail groove. DETAILED DESCRIPTION

[0016] The present application will be further described in detail below in combination with specific embodiments.

[0017] The quick clamping device is as shown in FIG. Figure 1As shown, the proximal end of the shaft 1 is hingedly mounted with an eccentric handle 2 via a pin shaft 6, and the distal end is threadedly connected with an adjusting nut 3; the shaft 1 is slidably sleeved with a clamping block 4 between the eccentric handle 2 and the adjusting nut 3, and the proximal end face of the clamping block 4 is provided with an arc-shaped groove 41 abutting the eccentric part 21 of the eccentric handle 2. The quick clamping device axially clamps a plurality of to-be-clamped objects between the clamping block 4 and the adjusting nut 3, and clamps or releases the clamping by pulling the eccentric handle 1 as an operating part. After multiple operations of the quick clamping device, the contact surfaces of the eccentric handle 2 and the clamping block 4 are worn, and the to-be-clamped objects are deformed after being clamped multiple times. The to-be-clamped objects will loosen in the clamped state, and the adjusting nut 3 needs to be operated for adjustment. If the eccentric handle 2 is broken, the adjusting nut 3 can also be operated for clamping or releasing. The adjusting nut 3 is generally exposed at a position convenient for operation, and the operator fixes the eccentric handle 2 with one hand and rotates the adjusting nut 3 with the other hand to make it axially move to the proximal end relative to the shaft 1 until the clamping block 4 and the adjusting nut 3 together clamp the plurality of to-be-clamped objects together again. In some application scenarios, the adjusting nut 3 will be blocked, for example, installed below the to-be-clamped objects and blocked by the to-be-clamped objects themselves, or installed beside the to-be-clamped objects and blocked by other components installed beside the to-be-clamped objects, and it is inconvenient to operate when adjustment is needed. Therefore, the distal end of the clamping block 4 is threadedly connected with a fine adjustment nut 5, and the operator can conveniently operate the fine adjustment nut 5 for adjustment, as follows: As Figure 2 shown, the support frame 7 is used to support the glass mold 8 to move in the coating chamber, so that the magnetron sputtering assembly in the coating chamber performs coating on the to-be-coated glass (not shown in the figure) placed on the glass mold 8. The middle part of the support frame 7 is hollow to form a receiving position 71 to receive the glass mold 8, and the left and right sides are provided with left and right strip-shaped hollow tracks 73 in the front-rear direction.

[0018] The receiving position 71 is provided with left and right transversely arranged adjusting edges 72. The adjusting edge 72 is provided with an upper and lower through hole near the right end and is provided with a quick clamping device. The quick clamping device first rotates the adjusting nut 3 out of the distal end of the shaft 1, inserts the distal end of the shaft 1 into the hole, and then rotates the adjusting nut 3 back to the distal end of the shaft 1, so that the quick clamping device is fixed with the adjusting edge 72. The adjusting edge 72 is also provided with an upper and lower through hole near the left end and is also provided with a clamping device, and the installation structure is symmetrical with that near the right end, which is not described in detail. The adjusting edge 72 is installed on the left and right tracks 73 by means of the clamping devices near the left and right ends, and the installation process is described as follows: The top surface of the track 73 is provided with a front-rear direction track groove 730 (see Figure 3 ), and the main section of the track groove 730 is narrower than the adjusting nut 3, but the rear end 731 (see Figure 4 ) is wider than the adjusting nut 3. The distal end of the shaft 1 of the clamping device together with the adjusting nut 3 is inserted into the hollow interior of the track 73 from the rear end 731 of the track groove 730 (seeFigure 5 ), the adjusting edge 72 can be moved along the track 73 to adjust the size of the accommodating position 71 to adapt to the glass mold 8 of different sizes. See Figure 1 , the two eccentric handles 2 are pulled downward to axially push the clamping block 4 to the adjusting nut 3, and the clamping block 4 is clamped together with the adjusting nut 3 by the remote fine adjustment nut 5 to clamp the adjusting edge 72 and the support frame 7. The two eccentric handles 2 are pulled upward to release the clamping. After the quick clamping device is operated for many times, the clamping of the adjusting edge 72 and the support frame 7 will be loose, and needs to be adjusted. Although the adjusting nut 3 is shielded in the track 73 and is not convenient to operate, since the eccentric handle 2, the clamping block 4 and the fine adjustment nut 5 are located above the adjusting edge 72 and are exposed, the operator can operate the clamping block 4 to slide upward to stick to the eccentric part 21 of the eccentric handle 2, and then rotate the fine adjustment nut 5 to move axially downward to be close to the adjusting nut 3 as a fine adjustment part, and the clamping block 4 is axially elongated by the fine adjustment nut 5 until the adjusting edge 72 and the support frame 7 are clamped together with the adjusting nut 3.

[0019] If the eccentric handle 2 is broken, since the adjusting nut 3 is shielded in the track 73 and is not convenient to operate, the operator can fix the clamping block 4 with one hand and rotate the fine adjustment nut 5 with the other hand to move axially downward to be close to the adjusting nut 3 along the clamping block 4, and the clamping block 4 is axially elongated by the fine adjustment nut 5 until the support frame 7 and the adjusting edge 72 are clamped together with the adjusting nut 3; similarly, the fine adjustment nut 5 is rotated in the opposite direction to move axially upward to be away from the adjusting nut 3 along the clamping block 4, and the clamping block 4 is axially shortened by the fine adjustment nut 5 to release the clamping, which is convenient to operate.

[0020] The above description is only an embodiment of the present application, and does not limit the scope of patent protection. Those skilled in the art can make non-essential changes or substitutions on the basis of the present application, which still falls within the scope of patent protection.

Claims

1. A quick clamping device, comprising a shaft (1), an operating part mounted on its proximal end and an adjusting nut (3) threadedly connected to its distal end, a clamping block (4) sliding along the shaft (1) between the operating part and the adjusting nut (3), wherein the operating part, when operated, axially pushes the clamping block (4) against the adjusting nut (3), thereby clamping multiple objects to be clamped together by the clamping block (4) and the adjusting nut (3), characterized in that: The clamp (4) can be axially extended and shortened, and can be fixed after being extended.

2. The quick clamping device as described in claim 1, characterized in that: The clamping block (4) can be axially extended and shortened, specifically the distal end of the clamping block (4) can be axially extended and shortened.

3. The quick clamping device as described in claim 2, characterized in that: A fine-tuning element is installed on the clamp (4) and can move along its axis. The fine-tuning element moves axially relative to the clamp (4), thereby enabling the clamp (4) to extend and shorten in the axial direction.

4. The quick clamping device as described in claim 3, characterized in that: The fine-tuning component is specifically a fine-tuning nut (5) that is threaded onto the clamp (4).

5. The quick clamping device as described in claim 1, characterized in that: The operating part is specifically an eccentric handle (2).

6. The quick clamping device as described in claim 5, characterized in that: The clamp (4) has an arc-shaped groove (41) on its near end face to fit the eccentric part (21) of the eccentric handle.

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