High-stability clamping mechanism

Abstract

The utility model discloses a high-stability clamping mechanism, which belongs to the technical field of machining and comprises a base, push plates are symmetrically arranged on two sides of the top of the base in a sliding manner, a distance adjusting mechanism for controlling the push plates to slide is arranged at the top of the base, L-shaped plates are mounted on the inner sides of the push plates in a hinged manner, and the outer side surfaces of the L-shaped plates are attached to the inner sides of the push plates. Through openings are formed in the positions, located on the outer sides of the corners of the bottom ends of the L-shaped plates, of the push plates, and extending mechanisms are arranged on the tops of the inner sides of the L-shaped plates. The push plates are symmetrically arranged on the top of the base in a sliding mode, the L-shaped plates are hinged to the inner sides of the push plates, in the workpiece clamping and positioning process, the L-shaped rods can be controlled to rotate towards a workpiece, the bottom and the side edge of the top end of the workpiece are extruded and fixed at the same time, up-down double clamping is carried out, the clamping stability is improved, and the clamping efficiency is improved. And the clamping speed is higher.

Description

Technical Field

[0001] The utility model relates to a clamping mechanism, in particular to a high-stability clamping mechanism, belonging to the technical field of machining. Background Art

[0002] In the prior art, as disclosed in the utility model with the application number 202320813771.7, a workpiece clamping mechanism is disclosed. To solve the problem that the height of the workpiece is too different from the clamping mechanism used, which easily causes the clamping force of the clamping mechanism to be below the workpiece, resulting in the clamping force on the bottom of the workpiece being too weak during processing and causing the workpiece to fall, two groups of clamping mechanisms are respectively arranged in the sliding grooves on the workbench in a sliding manner and are threadedly connected to the left and right threaded rods. By rotating the left and right threaded rods, the clamping mechanisms can be moved outward or inward to clamp the workpiece up and down.

[0003] The prior art similar to the above application still has deficiencies:

[0004] Although the up-and-down clamping method can improve the clamping stability, it cannot be clamped simultaneously during the clamping process and needs to be controlled separately, which affects the clamping speed and thus reduces the processing efficiency;

[0005] Therefore, a high-stability clamping mechanism is designed to optimize the above problems. Summary of the Utility Model

[0006] The main purpose of the utility model is to provide a high-stability clamping mechanism. By symmetrically and slidably arranging push plates on the top of the base and hingedly installing L-shaped plates on the inner sides of the push plates, during the process of clamping and positioning the workpiece, the L-shaped rods can be controlled to rotate towards the workpiece, and the bottom and the side of the top of the workpiece can be simultaneously squeezed and fixed to perform up-and-down double clamping, improving the clamping stability and having a faster clamping speed. By slidably arranging extension plates on the top of the inner sides of the L-shaped plates, the length of the top of the L-shaped plates can be adjusted according to the height of the workpiece to adapt to different workpieces. In addition, a pressing plate is hingedly installed at the top of the extension plate, and the flipping of the pressing plate is controlled by positioning bolts. After the workpiece is double-clamped up and down, the top of the workpiece can be further pressed and fixed by the pressing plate, with better stability.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A high-stability clamping mechanism includes a base. Push plates are symmetrically and slidably arranged on both sides of the top of the base. A spacing adjustment mechanism for controlling the sliding of the push plates is arranged on the top of the base. L-shaped plates are hingedly installed on the inner sides of the push plates. The outer sides of the L-shaped plates are attached to the inner sides of the push plates. Through holes are respectively opened on the push plates and outside the bottom corners of the L-shaped plates. Extension mechanisms are arranged on the top of the inner sides of the L-shaped plates.

[0009] Preferably, the spacing adjustment mechanism includes a strip-shaped groove and a bidirectional screw. The strip-shaped groove is formed at the top of the base, the bottom ends of the push plates are respectively located at the inner bottom of the strip-shaped groove, and a bidirectional screw is rotatably installed between the two ends of the strip-shaped groove. The two ends of the bidirectional screw are respectively threadedly connected to the push plates.

[0010] Preferably, the two ends of the bidirectional screw respectively extend to the outside of the base, and adjusting wheels are fixed to the two ends of the bidirectional screw.

[0011] Preferably, arc-shaped blocks are rotatably installed at the bottom ends of the L-shaped plates, and the arc-shaped blocks are semi-cylindrical.

[0012] Preferably, the extension mechanism includes a sliding groove, an extension plate and a lifting screw. The sliding groove is formed at the top inside the L-shaped plate, an extension plate is vertically slidably arranged inside the sliding groove, the side of the extension plate is in the same plane as the inside of the sliding groove, and a lifting screw is rotatably installed at the bottom end of the L-shaped plate. The lifting screw is threadedly connected to the extension plate.

[0013] Preferably, a hidden groove is formed at the top inside the extension plate, a pressing block is rotatably installed at the bottom end of the hidden groove, a positioning screw is installed at the top outside the extension plate, and the positioning screw extends into the hidden groove and fits with the pressing block.

[0014] Preferably, an arc-shaped chamfer is provided at the top inside the pressing block, and the top end of the pressing block is flush with the top of the extension plate.

[0015] The beneficial effects of the present utility model are as follows:

[0016] A high-stability clamping mechanism provided by the present utility model can, by symmetrically and slidably arranging push plates at the top of the base and hingedly installing L-shaped plates inside the push plates, control the L-shaped rods to rotate towards the workpiece during the process of clamping and positioning the workpiece, simultaneously squeeze and fix the bottom and the side of the top end of the workpiece, perform double clamping from top and bottom, improve the clamping stability, and have a faster clamping speed.

[0017] By slidably arranging an extension plate at the top inside the L-shaped plate, the length of the top end of the L-shaped plate can be adjusted according to the height of the workpiece so as to adapt to different workpieces. In addition, a pressing plate is hingedly installed at the top end of the extension plate, and by controlling the pressing plate to flip with a positioning bolt, after double clamping the workpiece from top and bottom, the top of the workpiece can be further pressed and fixed with the pressing plate, and the stability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view cross-sectional view of the present utility model;

[0019] Figure 2 is the cross-sectional view of the L-shaped plate of the present utility model;

[0020] Figure 3 It is the push plate diagram of the present utility model;

[0021] Figure 4 It is the top view of the base of the present utility model.

[0022] In the figure: 1. Base; 2. Push plate; 3. Strip-shaped groove; 4. Bidirectional screw; 5. L-shaped plate; 6. Through hole; 7. Sliding groove; 8. Extension plate; 9. Lifting screw; 10. Arc-shaped block; 11. Hidden groove; 12. Pressing block; 13. Positioning screw. Specific implementation manner

[0023] To make the technical personnel in this technical field more clear and definite about the technical solution of the present utility model, the present utility model will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the implementation manners of the present utility model are not limited thereto.

[0024] As Figures 1-4 shown, this embodiment provides a high-stability clamping mechanism, including a base 1. On both sides of the top of the base 1, push plates 2 are symmetrically and slidably arranged. On the top of the base 1, a spacing adjustment mechanism for controlling the sliding of the push plates 2 is provided. On the inner sides of the push plates 2, L-shaped plates 5 are hingedly installed. The outer side surfaces of the L-shaped plates 5 are in contact with the inner sides of the push plates 2. Through holes 6 are respectively opened on the outer sides of the bottom corners of the L-shaped plates 5 on the push plates 2. Extension mechanisms are provided on the tops of the inner sides of the L-shaped plates 5.

[0025] Overall working principle: Before processing the workpiece, first fix the device horizontally on the workbench, then place the workpiece on the top of the base 1, and then use the spacing adjustment mechanism to control the two groups of push plates 2 to move towards each other. After the bottom ends of the L-shaped plates 5 on the inner sides of the push plates 2 are in contact with the workpiece, as the push plates 2 move again, the top ends of the L-shaped plates 5 will flip towards the workpiece. The corner ends of the L-shaped plates 5 enter into the internal of the through holes 6. The bottom ends of the L-shaped plates 5 are in contact with the bottom of the workpiece for fixation, and the inner sides of the top ends of the L-shaped plates 5 are in contact with the outer side surfaces of the top ends of the workpiece to support the top of the workpiece. Through the double-clamping fixation method, the stability of the workpiece is increased.

[0026] In this embodiment, the spacing adjustment mechanism includes a strip-shaped groove 3 and a bidirectional screw 4. The strip-shaped groove 3 is opened on the top of the base 1. The bottom ends of the push plates 2 are respectively located at the inner bottom of the strip-shaped groove 3. A bidirectional screw 4 is rotatably installed between the two ends of the strip-shaped groove 3. The two ends of the bidirectional screw 4 are respectively threadedly connected to the push plates 2.

[0027] Local working principle: When clamping the workpiece, control the rotation of the bidirectional screw 4. The bidirectional screw 4 simultaneously drives the two groups of push plates 2 to move towards each other or in the opposite direction to clamp or release the locking of the workpiece.

[0028] In this embodiment, the two ends of the bidirectional screw 4 respectively extend to the outside of the base 1, and adjustment wheels are fixed at both ends of the bidirectional screw 4.

[0029] Local working principle: Since adjusting wheels are provided at both ends of the bidirectional screw 4, manual adjustment can be conveniently performed during use, and the operation is convenient.

[0030] In this embodiment, arc-shaped blocks 10 are rotatably installed at the bottom ends of the L-shaped plates 5, and the arc-shaped blocks 10 are semi-cylindrical.

[0031] Local working principle: Due to the setting of the arc-shaped blocks 10, they can rotate at the bottom ends of the L-shaped plates 5, and the vertical plane always fits the workpiece, increasing the contact area with the bottom of the workpiece and improving the clamping effect.

[0032] In this embodiment, the extension mechanism includes a chute 7, an extension plate 8, and a lifting screw 9. The chute 7 is opened at the top inside the L-shaped plate 5. An extension plate 8 is vertically slidably arranged inside the chute 7. The side of the extension plate 8 is in the same plane as the inside of the chute 7. A lifting screw 9 is rotatably installed at the bottom end of the L-shaped plate 5, and the lifting screw 9 is threadedly connected to the extension plate 8.

[0033] Local working principle: When clamping the workpiece, due to the different lengths of the workpieces, by controlling the rotation of the lifting screw 9, the vertical movement of the extension plate 8 can be controlled. When clamping a higher workpiece, the extension plate 8 is used to press and fix the side of the top of the workpiece, which has higher practicability.

[0034] In this embodiment, a hidden groove 11 is opened at the top inside the extension plate 8. A pressing block 12 is rotatably installed at the bottom end of the hidden groove 11. A positioning screw 13 is installed at the top outside the extension plate 8, and the positioning screw 13 extends into the hidden groove 11 and fits with the pressing block 12.

[0035] Local working principle: After clamping and fixing, at this time, the pressing block 12 is located at the top of the workpiece. Then, rotate the positioning screw 13 to press the pressing block 12 against the top of the workpiece to press down the workpiece, and the clamping stability is higher.

[0036] In this embodiment, an arc-shaped chamfer is provided at the top inside the pressing block 12, and the top end of the pressing block 12 is flush with the top of the extension plate 8.

[0037] Local working principle: The arc-shaped chamfered edge on the pressing block 12 contacts the top of the workpiece to avoid causing indentation on the top of the workpiece, and the practicability is higher.

[0038] The above is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent substitutions or changes, all belong to the protection scope of the present utility model.

Claims

1. A high-stability clamping mechanism, comprising a base (1), characterized in that: Push plates (2) are symmetrically slidably arranged on both sides of the top of the base (1), and a spacing adjustment mechanism for controlling the sliding of the push plates (2) is arranged on the top of the base (1). An L-shaped plate (5) is hingedly installed on the inner side of the push plates (2), and the outer side surface of the L-shaped plate (5) is fitted with the inner side of the push plates (2). A through hole (6) is opened on the outer side of the push plates (2) and located at the bottom corner of the L-shaped plate (5), and an extension mechanism is arranged on the top of the inner side of the L-shaped plate (5).

2. A high stability clamping mechanism according to claim 1, characterized in that: The spacing adjustment mechanism comprises a strip groove (3) and a bidirectional screw (4); the strip groove (3) is arranged on the top of the base (1); the bottom ends of the push plates (2) are respectively located at the inner bottoms of the strip grooves (3); a bidirectional screw (4) is rotatably mounted between the two ends of the strip groove (3); and the two ends of the bidirectional screw (4) are respectively threadedly connected to the push plates (2).

3. A high stability clamping mechanism according to claim 2, characterized in that: Both ends of the bidirectional screw rod (4) extend to the outside of the base (1) respectively, and both ends of the bidirectional screw rod (4) are fixed with adjustment wheels.

4. A high stability clamping mechanism according to claim 1, characterized in that: The bottom ends of the L-shaped plates (5) are all rotatably mounted with arc blocks (10), and the arc blocks (10) are semi-cylindrical.

5. The high stability clamping mechanism according to claim 1, characterized in that: The extension mechanism comprises a slide groove (7), an extension plate (8) and a lifting screw (9); the slide groove (7) is arranged at the top of the inner side of the L-shaped plate (5); the extension plate (8) is vertically slidably arranged inside the slide groove (7); the side edge of the extension plate (8) and the inside of the slide groove (7) are located on the same plane; the lifting screw (9) is rotatably installed at the bottom end of the L-shaped plate (5); the lifting screw (9) and the extension plate (8) are threadedly connected.

6. A high stability clamping mechanism according to claim 5, characterized in that: A hidden groove (11) is provided at the top of the inner side of the extension plate (8), a pressing block (12) is rotatably mounted at the bottom end of the hidden groove (11), a positioning screw (13) is mounted at the top of the outer side of the extension plate (8), and the positioning screw (13) extends to the inside of the hidden groove (11) and fits with the pressing block (12).

7. A high stability clamping mechanism according to claim 6, characterized in that: The top of the inner side of the pressing block (12) is provided with an arc chamfer, and the top of the pressing block (12) is flush with the top of the extension plate (8).

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