Clamp

Abstract

The utility model relates to the technical field of clamps, and discloses a clamp which comprises a clamp table, bolt clamp fixing strips are fixedly arranged at the two ends of the clamp table through bolts, rotating arms are symmetrically and fixedly arranged in the middle of the front side and the middle of the rear side of the clamp table, screw rods are rotationally arranged in the rotating arms, and the clamp further comprises a hinged arm clamp device. The hinged arm clamp comprises two pairs of hinged arms which are hinged to each other, and a forward-rotating nut block and a backward-rotating nut block are hinged to the hinged positions of the hinged arms. After the rubber pressing block is installed, a part is placed on the clamp table, one side edge of the part is attached to the inner side of the bolt clamp fixing strip, then the stress application rod is rotated, the metal structure ejecting block is expanded outwards, the rubber pressing block is clamped on the other end face of the part, and the part is clamped through the rubber pressing block after the screw rod is screwed down.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp. Background Art

[0002] The existing patent CN219521310U discloses a downward pressing positioning fixture, comprising a downward pressing locking piece and side pushing pieces arranged on both sides of the downward pressing locking piece; a screw hole is provided in the center of the downward pressing locking piece, a locking screw is provided in the screw hole, and symmetrically distributed clamping blocks are provided on both sides of the downward pressing locking piece, and the clamping blocks are a downwardly inclined structure facing inward; a clamping slide groove is provided on the inner side of the side pushing piece, and the clamping slide groove is a downwardly inclined structure, and the clamping block is clamped in the clamping slide groove, and the clamping block is slidably connected with the clamping slide groove; when the downward pressing locking piece is pressed down, the clamping blocks located on both sides of the downward pressing locking piece are pushed outward by force, and the workpieces on both sides can be fixed and locked at the same time, which can meet the clamping requirements of workpieces of different sizes, and by setting the joint surfaces of the clamping block and the clamping slide groove to an inclined plane structure, the inclined pressing is achieved, which greatly increases the locking force;

[0003] However, the design of this device requires multiple such clamps to be clamped separately, which is troublesome to operate, and the clamping force at each point is difficult to maintain consistent, which will affect the clamping effect. In addition, the clamping stroke range of this structure is very small and its practicality is average. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to overcome the above problems, a clamp is provided, which solves the above problems.

[0005] The utility model solves the technical problem by adopting the following technical solutions:

[0006] A clamp comprises a clamp table, both ends of which are fixed with bolt clamp bars by bolts, and rotating arms are symmetrically fixed in the middle of the front and rear sides of the clamp table, a screw rod is rotatably arranged in the rotating arm, and an articulated arm clamp device is also included, the articulated arm clamp device comprises two pairs of articulated arms articulated to each other, and a forward rotation nut block and a reverse rotation nut block are articulated at the articulation of the articulated arms, the thread lines of the middle screw holes of the reverse rotation nut block and the forward rotation nut block are opposite, the other end of the articulated arm is articulated to the top block of the metal structure, the forward rotation nut block and the reverse rotation nut block are threadedly connected to the screw rod, when After the screw rotates, the reverse-rotation nut block and the forward-rotation nut block simultaneously move closer to or away from each other, thereby pushing the metal structure top block. The metal structure top block forms a clamping surface to clamp the part between it and the bolt clamp fixed bar. The screw is provided with a plurality of articulated arm clamps according to the width of the clamp table. Compared with the existing inclined clamps, the clamping stroke of the device is larger and can handle parts in a larger range. In addition, the device controls several clamping points through the same screw, which can realize synchronous action, is more convenient and quick, and can ensure that the clamping force of each clamping point is consistent, thereby ensuring the stability of the clamping.

[0007] Preferably, in order to improve the synchronization and stability of the metal structure top block, linear slide grooves are arranged at intervals on the upper end surface of the fixture table, and a downwardly protruding slider is fixedly provided on the lower end surface of the metal structure top block for sliding in the linear slide groove, which can also effectively improve the longitudinal bearing capacity of the metal structure top block.

[0008] Preferably, in order to synchronize the articulated rotation of the two articulated arms, mutually meshing auxiliary teeth are fixedly provided at the ends of the articulated arms. When one side of the articulated arm articulates and rotates, the other side of the articulated arm will immediately follow up to avoid unilateral pressure, thereby effectively improving the stability of the articulated arm clamp.

[0009] Preferably, a rubber pressing block is fixedly provided on one side of the clamping surface of the metal structure top block by screws, and the clamping stability is improved by the rubber pressing block.

[0010] Preferably, in order to save effort in rotating the screw, a force rod is fixedly provided at the end of the screw, and the axis of the force rod is perpendicular to the axis of the screw. The advantages and positive effects of the utility model are: after the rubber pressure block is installed, the part is placed on the fixture table and one side of the part is fitted on the inner side of the bolt fixture bar, and then the force rod is rotated to expand the metal structure top block outward, so that the rubber pressure block is clamped on the other end face of the part. When the screw is tightened, the rubber pressure block clamps the part. The linear slide increases the longitudinal bearing capacity of the metal structure top block. Similarly, the screw can be reversed to quickly release the clamping of the part. Compared with the existing inclined clamp, the clamping stroke of the device is larger and can handle parts in a larger range. In addition, the device controls several clamping points through the same screw, which can achieve synchronous action, is more convenient and quick, and can ensure the consistency of the clamping force of each clamping point, ensuring the stability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle articulated arm clamp 13.

[0014] The marks in the attached drawings are described as follows: 10, fixture table; 11, bolt fixture bar; 12, linear slide; 13, articulated arm fixture; 14, rotating arm; 15, screw; 16, rubber pressure block; 17, metal structure top block; 18, articulated arm; 19, forward rotation nut block; 20, auxiliary clamping teeth; 21, reverse rotation nut block; 22, force rod. DETAILED DESCRIPTION

[0015] Now, the utility model is further described in detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model. The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings:

[0016] like Figure 1-2As shown, a clamp described in the utility model includes a clamp table 10, both ends of the clamp table 10 are fixed with bolt clamp bars 11 by bolts, and rotating arms 14 are symmetrically fixed in the middle of the front and rear sides of the clamp table 10, and a screw 15 is rotatably arranged in the rotating arm 14, and also includes an articulated arm clamp 13, the articulated arm clamp 13 includes two pairs of articulated arms 18 hinged to each other, and a forward rotation nut block 19 and a reverse rotation nut block 21 are hinged at the hinge of the articulated arm 18, the thread lines of the middle screw holes of the reverse rotation nut block 21 and the forward rotation nut block 19 are opposite, the other end of the articulated arm 18 is hinged to the metal structure top block 17, the forward rotation nut block 19 and the reverse rotation nut block 21 is threadedly connected with the screw rod 15. When the screw rod 15 rotates, the reverse rotation nut block 21 and the forward rotation nut block 19 simultaneously move closer to each other or move away from each other, thereby pushing the metal structure top block 17. The metal structure top block 17 forms a clamping surface to clamp the parts between it and the bolt clamp fixed bar 11. The screw rod 15 is provided with a plurality of articulated arm clamps 13 according to the width of the clamp table 10. Compared with the existing inclined clamps, the clamping stroke of the device is larger and can handle parts in a larger range. In addition, the device controls several clamping points through the same screw rod 15, can realize synchronous action, is more convenient and quick, and can ensure that the clamping force of each clamping point is consistent, thereby ensuring the stability of the clamping.

[0017] Preferably, in order to improve the synchronization and stability of the metal structure top block 17, a linear slide groove 12 is provided at intervals on the upper end surface of the fixture table 10, and a downwardly protruding slider is fixedly provided on the lower end surface of the metal structure top block 17 for sliding in the linear slide groove 12, which can also effectively improve the longitudinal bearing capacity of the metal structure top block 17.

[0018] Preferably, in order to synchronize the articulated rotation of the two articulated arms 18, mutually meshing auxiliary teeth 20 are fixedly provided at the ends of the articulated arms 18. When one side of the articulated arm 18 articulates and rotates, the other side of the articulated arm 18 will immediately follow up to avoid unilateral pressure, thereby effectively improving the stability of the articulated arm clamp 13.

[0019] Preferably, a rubber pressing block 16 is fixed by screws on one side of the clamping surface of the metal structure top block 17, and the clamping stability is improved by the rubber pressing block 16.

[0020] Preferably, in order to save effort in rotating the screw rod 15 , a force rod 22 is fixedly provided at the end of the screw rod 15 , and the axis of the force rod 22 is perpendicular to the axis of the screw rod 15 .

[0021] During specific implementation, after the rubber pressure block 16 is installed, the part is placed on the fixture table 10 and one side of the part is fitted into the inner side of the bolt fixture fixed bar 11, and then the force rod 22 is rotated to make the metal structure top block 17 expand outward, so that the rubber pressure block 16 is clamped on the other end face of the part. When the screw 15 is tightened, the rubber pressure block 16 clamps the part. The linear slide groove 12 improves the longitudinal bearing capacity of the metal structure top block 17. Similarly, reversing the screw 15 can quickly release the clamping of the part. Compared with the existing inclined clamp, the clamping stroke of this device is larger and can handle parts in a larger range. In addition, this device controls several clamping points through the same screw 15, can realize synchronous action, is more convenient and quick, and can ensure that the clamping force of each clamping point is consistent, thereby ensuring the stability of the clamping.

[0022] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A fixture, comprising a fixture table (10), characterized in that: The two ends of the clamping platform (10) are fixed with bolt clamp bars (11) by bolts, and rotating arms (14) are symmetrically fixed in the middle of the front and rear sides of the clamping platform (10), and a screw rod (15) is rotatably arranged in the rotating arm (14). The clamping platform (10) also includes an articulated arm clamp (13), and the articulated arm clamp (13) includes two pairs of articulated arms (18) articulated to each other, and a forward-rotating nut block (19) and a reverse-rotating nut block (21) are articulated at the articulation of the articulated arms (18), and the thread lines of the middle screw holes of the reverse-rotating nut block (21) and the forward-rotating nut block (19) are opposite, and the articulated arm clamp (13) includes two pairs of articulated arms (18) articulated to each other, and the articulated arm clamp (13) includes two pairs of articulated arms (18) articulated to each other, and the articulated arms (18) include ...9) and a reverse-rotating nut block (21), and the articulated arms (18) have two pairs of articulated arms (18) and a reverse-rotating nut block (21), and the articulated arms (18) have two pairs of articulated arms (18) and a reverse-rotating nut block (21), and the articulated arms (18) have two pairs of articulated arms (18) and a reverse-rotating nut block (21), and the articulated arms (18) have two pairs The other end of the arm (18) is hinged to the metal structure top block (17), and the forward-rotating nut block (19) and the reverse-rotating nut block (21) are threadedly connected to the screw rod (15). When the screw rod (15) rotates, the reverse-rotating nut block (21) and the forward-rotating nut block (19) simultaneously move toward each other or move away from each other, thereby pushing the metal structure top block (17). The metal structure top block (17) forms a clamping surface to clamp the part between it and the bolt clamp fixed bar (11). A plurality of the articulated arm clamps (13) are provided on the screw rod (15) according to the width of the clamp table (10).

2. A clamp according to claim 1, characterized in that: In order to improve the synchronization and stability of the metal structure top block (17), linear slide grooves (12) are provided at intervals on the upper end surface of the fixture table (10), and a downwardly protruding slider is fixedly provided on the lower end surface of the metal structure top block (17) for sliding in the linear slide groove (12), which can also effectively improve the longitudinal bearing capacity of the metal structure top block (17).

3. A clamp according to claim 2, characterized in that: In order to synchronize the articulated rotation of the two articulated arms (18), mutually meshing auxiliary latch teeth (20) are fixedly provided at the ends of the articulated arms (18). When one side of the articulated arm (18) articulates and rotates, the other side of the articulated arm (18) will immediately follow up to avoid unilateral pressure, thereby effectively improving the stability of the articulated arm clamp (13).

4. A clamp according to claim 1, 2 or 3, characterized in that: A rubber pressing block (16) is fixedly provided on one side of the clamping surface of the metal structure top block (17) by means of screws, and the clamping stability is improved by means of the rubber pressing block (16).

5. A clamp according to claim 4, characterized in that: In order to save effort when rotating the screw rod (15), a force rod (22) is fixedly provided at the end of the screw rod (15), and the axis of the force rod (22) is perpendicular to the axis of the screw rod (15).

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