An automatic adjustment anti-rotation electric clamping mechanism

Abstract

The present invention discloses an automatic adjustment anti-rotation electric clamping mechanism, comprising a self-locking motor, a telescopic rotating mechanism arranged on the output shaft of the self-locking motor, a screw rod arranged at one end of the telescopic rotating mechanism away from the self-locking motor, a clamper and a mounting seat respectively sleeved on both ends of the screw rod, wherein the clamper slides on the mounting seat, and both ends of the mounting seat are provided with limit blocks for limiting the position of the clamper. The electric clamping mechanism of the present invention automatically adjusts the position of the clamper through axial movement of the screw rod, thereby ensuring that the clamper is evenly stressed and the clamper is clamped more tightly. When the self-locking motor is powered off and idling, the clamper at both ends of the screw rod is prevented from moving backwards through an additional torsion spring, thereby preventing the clamper from loosening.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, and in particular to an automatic adjustment anti-rotation electric clamping mechanism. Background Art

[0002] The self-locking motor of the electric clamp produces backlash when the power is off, which can easily lead to a reduction in the clamping force of the clamp. At the same time, since the relative position between the clamp and the slider is determined by the electronic control, when the distances between the two clamps and the clamping surfaces of the slider are not equal, the clamp is prone to uneven force and the slider cannot be clamped tightly. Summary of the invention

[0003] The object of the present invention is to provide an automatically adjustable anti-rotation electric clamping mechanism to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: the automatic adjustment anti-rotation electric clamping mechanism comprises a self-locking motor, a telescopic rotating mechanism arranged on the output shaft of the self-locking motor, a screw rod arranged at one end of the telescopic rotating mechanism away from the self-locking motor, and a clamp mounting seat respectively sleeved on both ends of the screw rod, and the clamp is threadedly connected to the screw rod, and the rotation directions of the clamp threads at both ends of the screw rod are opposite, the clamp slides on the mounting seat, and both ends of the mounting seat are provided with limit blocks for limiting the position of the clamp;

[0005] The telescopic rotating mechanism includes a fixed seat for connecting the output shaft of the self-locking motor and a connecting head for connecting the screw rod. The fixed seat includes an adjustment cavity, and the cavity wall of the adjustment cavity has a linkage groove. The connecting head has a linkage rod matching the linkage groove.

[0006] The self-locking motor of the existing electric clamp is directly fixed to the lead screw. When the lead screw rotates, if the unilateral clamping force of the clamps at both ends of the lead screw is too large, it is inconvenient to adjust. When the clamping mechanism needs to release the slider, the motor rotates in the opposite direction to move the clamp away from the clamping surface of the slider to reduce the clamping force. At this time, the role of the limit block is to ensure that the clamping force of the two clamps is reduced at the same time through the axial movement of the lead screw when only one clamp is released.

[0007] Preferably, the port of the linkage groove is provided with a port cap, which has a hole for the connector to pass through, and serves to close the port of the linkage groove, so as to prevent the connector from being separated from the fixing seat when the connector moves in the adjustment cavity.

[0008] Preferably, the connector is connected to the screw rod via a torsion spring, which has a certain energy storage capacity to prevent the clamp from loosening when the self-locking motor is powered off and idling.

[0009] The beneficial effects of the present invention are:

[0010] The electric clamping mechanism of the present invention automatically adjusts the position of the clamp through the axial movement of the screw rod, thereby ensuring that the clamp is evenly stressed and making the clamp clamp more tightly. When the self-locking motor is powered off and idling, the additional torsion spring is used to prevent the clamps at both ends of the screw rod from moving backwards, thereby preventing the clamps from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention

[0012] Figure 2 It is a schematic cross-sectional structure diagram of the telescopic rotating mechanism of the present invention.

[0013] Explanation of the accompanying drawings: 1. Self-locking motor, 2. Telescopic rotating mechanism, 21. Fixed seat, 22. Connecting head, 23. Adjusting cavity, 24. Linkage groove, 25. Linkage rod, 3. Screw, 4. Clamp, 5. Limit block, 6. Torsion spring, 7. Slider, 8. Mounting seat. DETAILED DESCRIPTION

[0014] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0015] Embodiment 1:

[0016] like Figure 1-2 The automatically adjustable anti-rotation electric clamping mechanism shown comprises a self-locking motor 1, a telescopic rotating mechanism 2 arranged on the output shaft of the self-locking motor 1, a screw rod 3 arranged at one end of the telescopic rotating mechanism 2 away from the self-locking motor 1, a clamp 4 respectively sleeved on both ends of the screw rod 3, and a mounting seat 8, wherein the clamp 4 slides on the mounting seat 8, and both ends of the mounting seat 8 are provided with limit blocks 5 for limiting the position of the clamp 4, the clamp 4 is threadedly connected to the screw rod 3, and the threaded rotation directions of the clamp 4 at both ends of the screw rod 3 are opposite, the telescopic rotating mechanism 2 comprises a fixed seat 21 for connecting the output shaft of the self-locking motor 1 and a connecting head 22 for connecting the screw rod 3, the fixed seat 21 comprises an adjusting cavity 23, the cavity wall of the adjusting cavity 23 has a linkage groove 22, and the connecting head 22 has a linkage rod 25 matching the linkage groove 22.

[0017] The self-locking motor 1 drives the screw rod 3 to rotate, and the clamps 4 mounted on both ends of the screw rod 3 move toward each other, gradually generating a clamping force on the slider 7. During the clamping process, the clamps 4 and the slider 7 are in contact. When there is still a gap between the clamping surfaces of the clamps 4 and the slider 7, the positions of the two clamps 4 are moved by the telescopic rotating mechanism 2 to ensure that the slider 7 is always kept in the middle of the two clamps 4. The connector 22 of the telescopic rotating mechanism 2 for connecting the screw rod can reciprocate in the adjusting cavity 23 of the fixed seat 21, so that the screw rod 3 has a certain axial The positions of the two clamps 4 are adjusted by axially moving the position of the screw rod 3, so that the clamping surfaces between the clamps 4 at both ends of the screw rod 3 and the slider 7 maintain the same length of gaps, and then the two clamps 4 continue to move toward each other by rotating the self-locking motor 1, so that the clamps 4 continue to approach the clamping surface of the slider 7, and this iteration is carried out until the slider 7 is completely fixed. When the clamping mechanism needs to release the slider 7, the self-locking motor 1 is controlled to rotate in the opposite direction, so that the clamps 4 are away from the clamping surface of the slider 7, reducing the clamping force.

[0018] As a preferred solution of the above embodiment, a port cap is provided at the port of the linkage groove 22, and the port cap has a hole for the connector 22 to pass through.

[0019] Embodiment 2:

[0020] On the basis of Example 1, further, in order to prevent the two clamps 4 close to each other from loosening when the self-locking motor 1 is powered off and idling, the connector 22 is connected to the screw rod 3 by a torsion spring 6. The torsion spring 6 has a large elastic potential energy, can store and release angular energy, and generate resistance to rotation or rotational external force. When the self-locking motor 1 is powered off and rotates, the torsion spring 6 pulls the clamp 4 back to its original position, preventing the two clamps 4 at both ends of the screw rod 3 from moving backwards when the self-locking motor 1 is powered off, causing a gap between the clamp and the clamping surface of the slider, resulting in a decrease in the clamping force.

[0021] The above-described embodiments only express specific implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An automatic adjustment anti-rotation electric clamping mechanism, characterized in that: It includes a self-locking motor, a telescopic rotating mechanism arranged on the output shaft of the self-locking motor, a screw arranged at one end of the telescopic rotating mechanism away from the self-locking motor, a clamp and a mounting seat respectively sleeved on both ends of the screw, the clamp slides on the mounting seat, and both ends of the mounting seat are provided with limit blocks for limiting the position of the clamp, the clamp is threadedly connected to the screw, and the threads of the clamps at both ends of the screw rotate in opposite directions; The telescopic rotating mechanism comprises a fixing seat for connecting the output shaft of the self-locking motor and a connecting head for connecting the screw rod, the fixing seat comprises an adjusting cavity, a cavity wall of the adjusting cavity is provided with a linkage groove, and the connecting head has a linkage rod matching the linkage groove; The port of the linkage slot is provided with a port cap, and the port cap has a hole for the connector to pass through; The connecting head and the screw rod are connected via a torsion spring.

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