Clamp with gear connecting rod force amplifying mechanism

Abstract

The utility model provides a clamp with a gear connecting rod reinforcement mechanism, which comprises a rack, a first connecting rod, a second connecting rod and a first gear, a fixed clamping block and a guide rail are arranged on the rack, a sliding seat is connected onto the guide rail in a sliding manner, and a movable clamping block corresponding to the fixed clamping block is arranged on the sliding seat; the first gear is rotationally connected to the rack, and a driving mechanism used for driving the first gear to rotate is arranged on the rack; a first hinge shaft is eccentrically arranged on the first gear; one end of the second connecting rod is connected with the sliding seat, and the other end is provided with a second hinge shaft; one end of the first connecting rod is rotationally connected with the first hinge shaft, and the other end of the first connecting rod is rotationally connected with the second hinge shaft. Compared with a traditional electric clamp, the electric clamp is small in size, due to the force increasing effect of the gear connecting rod force increasing mechanism, the high clamping effect can be achieved under the condition of small motor power, and miniaturization of the clamp can be achieved easily.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp with a gear connecting rod force-increasing mechanism. Background Art

[0002] In automated processing equipment, the workpiece often needs to be clamped before it can be processed; when clamping the workpiece, the fixture (clamp) is required to have a large clamping force to achieve a stable clamping of the workpiece.

[0003] Existing clamps can be divided into the following two categories according to the power source: 1. Hydraulic clamps; 2. Electric clamps. For processing equipment with high environmental protection requirements and digital control, electric clamps use motors as power sources, which can be better integrated with digital control systems and are more flexible to control. Therefore, electric clamps are more suitable for digitally controlled processing equipment.

[0004] The existing electric clamps mainly rely on motors as power, and transmit the power to the movable clamp block through a screw transmission mechanism to achieve relative movement between the movable clamp block and the fixed clamp block, thereby achieving clamping and loosening of the workpiece.

[0005] However, the existing electric clamp adopts a lead screw transmission mechanism, so the moving speed of the movable clamp block is slow, and the workpiece cannot be clamped and released quickly; moreover, the lead screw transmission mechanism takes up a large space, which is not conducive to the miniaturization of the clamp. Summary of the invention

[0006] The purpose of the utility model is to solve the problem that the existing electric clamp adopts a screw transmission mechanism, which leads to a slow moving speed of the movable clamp block and cannot realize quick clamping and loosening of the workpiece, and the screw transmission mechanism takes up a large space, which is not conducive to the miniaturization of the clamp. A clamp with a gear connecting rod force amplification mechanism is provided, which can effectively solve the above problems.

[0007] The purpose of the utility model is achieved through the following technical solutions: a clamp with a gear-connecting rod force-increasing mechanism, comprising a frame, a first connecting rod, a second connecting rod, and a first gear, the frame is provided with a fixed clamp block and a guide rail, the guide rail is slidably connected with a sliding seat, and the sliding seat is provided with a movable clamp block corresponding to the fixed clamp block;

[0008] The first gear is rotatably connected to the frame, and a driving mechanism for driving the first gear to rotate is provided on the frame; a first hinge shaft is eccentrically arranged on the first gear; one end of the second connecting rod is connected to the sliding seat, and the other end of the second connecting rod is provided with a second hinge shaft; one end of the first connecting rod is rotatably connected to the first hinge shaft, and the other end of the first connecting rod is rotatably connected to the second hinge shaft.

[0009] In the utility model, the first gear is driven to rotate in one direction by a driving mechanism, and the first gear rotates to drive the first connecting rod to move, the first connecting rod drives the second connecting rod, and the second connecting rod drives the sliding seat to move, thereby driving the movable clamp to move, so as to achieve the clamping or loosening of the workpiece. When the movable clamp moves to the clamping state, the line between the center of the first gear and the center of the first hinge shaft is parallel or nearly parallel to the connecting rod. In this state, the movable clamp achieves a good self-locking effect, so that the movable clamp is not easy to loosen in the clamping state. The first gear, the first connecting rod and the second connecting rod together constitute a gear-connecting rod force-increasing mechanism. When the movable clamp is about to move to the clamping state, the line between the center of the first gear and the center of the first hinge shaft is nearly parallel to the connecting rod. As the first gear continues to rotate, the moving speed of the movable clamp will slow down, but the clamping force of the movable clamp on the workpiece will increase, thereby achieving a force-increasing effect, so that a larger clamping force can be increased to meet the clamping needs of the workpiece. Compared with traditional electric clamps, the utility model is compact in size. Due to the force-enhancing effect of the gear-connecting rod force-enhancing mechanism, a higher clamping effect can be achieved even with a lower motor power, which is conducive to the miniaturization of the clamp. The movable clamping block has a faster moving speed, which is conducive to the rapid clamping of the workpiece.

[0010] Preferably, the first gear is a sector gear.

[0011] Preferably, when the movable clamping block moves to the clamping state, the angle between the line between the center of the first gear and the center of the first hinge shaft and the connecting rod is 175° to 180°.

[0012] Preferably, a gear shaft is rotatably connected to the frame, and the first gear is connected to the gear shaft.

[0013] Preferably, the frame is provided with a first connecting seat, and a fixed clamping block is arranged on the first connecting seat; the sliding seat is provided with a second connecting seat, and a movable clamping block is fixedly arranged on the second connecting seat.

[0014] Preferably, the driving mechanism includes a motor and a reducer, wherein the input shaft of the reducer is connected to the output shaft of the motor, the output shaft of the reducer is connected to a second gear, and the second gear is meshed with the first gear. The output shaft of the reducer is driven to rotate by the motor, and the output shaft of the reducer drives the second gear to rotate when rotating, and the first gear is driven to rotate by the second gear.

[0015] Preferably, the motor is a servo motor.

[0016] The beneficial effects of the utility model are as follows: compared with traditional electric clamps, the utility model is compact in size, and due to the force-enhancing effect of the gear-connecting rod force-enhancing mechanism, a higher clamping effect can be achieved even with a relatively small motor power, which is conducive to the miniaturization of the clamp; and the moving speed of the movable clamping block is relatively fast, which is conducive to the rapid clamping of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the utility model after the frame is removed.

[0019] In the figure: 1, frame, 2, first connecting seat, 3, fixed clamping block, 4, guide rail, 5, sliding seat, 6, second connecting seat, 7, movable clamping block, 8, motor, 9, reducer, 10, gear shaft, 11, first connecting rod, 12, first gear, 13, shaft hole, 14, second connecting rod, 15, first hinge shaft, 16, second hinge shaft, 17, second gear. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0021] like Figure 1 to Figure 2 As shown, a clamp with a gear-connecting rod force-increasing mechanism comprises a frame 1, a first connecting rod 11, a second connecting rod 14, and a first gear 12. A fixed clamp block 3 and a guide rail 4 are provided on the frame 1. A sliding seat 5 is slidably connected to the guide rail 4. A movable clamp block 7 corresponding to the fixed clamp block 3 is provided on the sliding seat 5. Among them, a first connecting seat 2 is provided on the frame 1, the first connecting seat 2 is fixedly connected to the frame 1, and the fixed clamp block 3 is arranged on the first connecting seat 2; a second connecting seat 6 is provided on the sliding seat 5, and the movable clamp block 7 is fixedly arranged on the second connecting seat 6, and the movable clamp block 7 moves with the movement of the sliding seat 5.

[0022] The first gear 12 is rotatably connected to the frame 1. A gear shaft 10 is rotatably connected to the frame 1, and the first gear 12 is connected to the gear shaft 10; a shaft hole 13 is provided at the center of the first gear 12, and the gear shaft 10 passes through the shaft hole 13. In this embodiment, the first gear 12 is a sector gear.

[0023] The frame 1 is provided with a driving mechanism for driving the first gear 12 to rotate. The driving mechanism includes a motor 8 and a reducer 9. The input shaft of the reducer 9 is connected to the output shaft of the motor 8. The output shaft of the reducer 9 is connected to a second gear 17, and the second gear 17 is meshed with the first gear 12. In this embodiment, the motor 8 is a servo motor 8. The output shaft of the reducer 9 is driven to rotate by the motor 8. When the output shaft of the reducer 9 rotates, the second gear 17 is driven to rotate, and the first gear 12 is driven to rotate by the second gear 17.

[0024] The first gear 12 is eccentrically provided with a first hinge shaft 15; one end of the second connecting rod 14 is connected to the sliding seat 5, and the other end of the second connecting rod 14 is provided with a second hinge shaft 16; one end of the first connecting rod 11 is rotatably connected to the first hinge shaft 15, and the other end of the first connecting rod 11 is rotatably connected to the second hinge shaft 16. When the movable clamping block 7 moves to the clamping state, the angle between the line between the center of the first gear 12 and the center of the first hinge shaft 15 and the connecting rod is 175° to 180°.

[0025] In the utility model, the first gear 12 is driven to rotate in one direction by the driving mechanism, and the first gear 12 drives the first connecting rod 11 to move when rotating, and the first connecting rod 11 drives the second connecting rod 14, and the second connecting rod 14 drives the sliding seat 5 to move, thereby driving the movable clamping block 7 to move, so as to achieve the clamping or loosening of the workpiece. When the movable clamping block 7 moves to the clamping state, the line between the center of the first gear 12 and the center of the first hinge shaft 15 is parallel or nearly parallel to the connecting rod. In this state, the movable clamping block 7 achieves a good self-locking effect, so that the movable clamping block 7 is not easy to loosen in the clamping state. The first gear 12, the first connecting rod 11 and the second connecting rod 14 together constitute a gear-connecting rod force-increasing mechanism. When the movable clamp 7 is about to move to the clamping state, the line between the center of the circle of the first gear 12 and the center of the first hinge shaft 15 is nearly parallel to the connecting rod. As the first gear 12 continues to rotate, the moving speed of the movable clamp 7 will slow down, but the clamping force of the movable clamp 7 on the workpiece will increase, thereby achieving a force-increasing effect, thereby being able to increase a larger clamping force to meet the clamping needs of the workpiece. Compared with the traditional electric clamp, the utility model is compact in size. Due to the force-increasing effect of the gear-connecting rod force-increasing mechanism, a higher clamping effect can be achieved even with a smaller motor 8 power, which is conducive to the miniaturization of the clamp; and the moving speed of the movable clamp 7 is faster, which is conducive to the rapid clamping of the workpiece.

[0026] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A clamp with a gear-connecting rod force-increasing mechanism, characterized in that: It includes a frame, a first connecting rod, a second connecting rod, and a first gear. The frame is provided with a fixed clamping block and a guide rail. The guide rail is slidably connected with a sliding seat. The sliding seat is provided with a movable clamping block corresponding to the fixed clamping block. The first gear is rotatably connected to the frame, and a driving mechanism for driving the first gear to rotate is provided on the frame; a first hinge shaft is eccentrically arranged on the first gear; one end of the second connecting rod is connected to the sliding seat, and the other end of the second connecting rod is provided with a second hinge shaft; one end of the first connecting rod is rotatably connected to the first hinge shaft, and the other end of the first connecting rod is rotatably connected to the second hinge shaft.

2. A clamp with a gear-connecting rod force-increasing mechanism according to claim 1, characterized in that: The first gear is a sector gear.

3. A clamp with a gear-connecting rod force-increasing mechanism according to claim 1, characterized in that: When the movable clamping block moves to the clamping state, the angle between the connecting line between the center of the first gear and the center of the first hinge shaft and the connecting rod is 175° to 180°.

4. A clamp with a gear-connecting rod force-amplifying mechanism according to claim 1, characterized in that: The frame is rotatably connected with a gear shaft, and the first gear is connected to the gear shaft.

5. The clamp with a gear-connecting rod force-increasing mechanism according to claim 1, characterized in that: The frame is provided with a first connecting seat, and a fixed clamping block is arranged on the first connecting seat; the sliding seat is provided with a second connecting seat, and a movable clamping block is fixedly arranged on the second connecting seat.

6. A clamp with a gear-connecting rod force-amplifying mechanism according to any one of claims 1 to 5, characterized in that: The driving mechanism comprises a motor and a reducer, wherein an input shaft of the reducer is connected to an output shaft of the motor, a second gear is connected to the output shaft of the reducer, and the second gear is meshed with the first gear.

7. A clamp with a gear-connecting rod force-increasing mechanism according to claim 6, characterized in that: The motor is a servo motor.

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