CN216608694U

CN216608694U - Clamp for clamping workpiece

Info

Publication number: CN216608694U
Application number: CN202122600952.5U
Authority: CN
Inventors: 蔡弹伟; 杨洋; 宋中锋; 李仲布; 谢声财; 李少兵; 向赞扬; 刘锦贤; 霍辉; 丁勇; 王伟; 顾忠林; 刘大鹏
Original assignee: Shanghai Yingchuang Precision Automobile Model Technology Co ltd
Current assignee: Shanghai Yingchuang Precision Automobile Model Technology Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-05-27
Anticipated expiration: 2031-10-28

Abstract

The utility model relates to a clamp for clamping a workpiece, in the clamp for clamping the workpiece, a rotating shaft is driven by a driving mechanism to rotate back and forth so as to drive a clamping arm to press a chuck to a bearing seat and press the workpiece tightly or far away from the bearing seat to loosen the workpiece, so that the driving mechanism only needs to drive the rotating shaft to rotate for a certain angle to clamp the workpiece, and the transmission mode is convenient and fast.

Description

Clamp for clamping workpiece

Technical Field

The utility model relates to a clamp for clamping a workpiece, in particular to a clamp for clamping a vehicle door check tool.

Background

In the technical field of automobile inspection tool manufacturing, a part inspection tool installed on a main inspection tool of an automobile body is often required to be clamped by using a clamp. On one hand, due to the complex structure of the vehicle body, the related parts need to be clamped quickly and avoid the interference of other parts, and a large clamping force is often needed. On the other hand, the requirement on the installation and matching precision of the checking fixture is high, so that the fixture is required to clamp parts and can conveniently adjust the related matching size. These requirements are difficult to achieve with prior art clamps.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a clamp for clamping a workpiece, which is capable of rapidly clamping the workpiece.

In order to achieve the above and other related objects, the present invention provides a clamp for clamping a workpiece, including a first fixing seat, a second fixing seat, and a bearing seat, wherein the bearing seat is used for bearing the workpiece;

a clamping arm is arranged on the first fixing seat, the lower end of the clamping arm is hinged to the first fixing seat, and a chuck is arranged at the upper end of the clamping arm;

the second fixing seat is connected with a rotating shaft, the rotating shaft is fixedly connected with a transmission connecting lever, a transmission connecting rod is connected between the transmission connecting lever and the middle of the clamping arm, one end of the transmission connecting rod is hinged to the middle of the clamping arm, the other end of the transmission connecting rod is hinged to the end of the transmission connecting lever, and the rotating shaft is driven by a driving mechanism to rotate back and forth so as to drive the clamping arm to press the chuck to the bearing seat and press the workpiece to the bearing seat or keep away from the bearing seat to loosen the workpiece.

Further, the clamping arm is in the shape of a sickle.

Further, the chuck comprises a screw rod connecting part and a clamping block arranged at the lower end of the screw rod connecting part, and the screw rod connecting part is detachably connected to the upper end of the clamping arm.

Further, the second fixed seat comprises two opposite bearing seats, and the rotating shaft is rotatably supported on the two bearing seats.

Furthermore, still be equipped with the drive connecting lever in the pivot, be connected through the drive connecting rod between drive connecting lever and the actuating mechanism, actuating mechanism can drive the back and forth movement of drive connecting rod along its length direction.

Further, the length of the driving crank arm is smaller than that of the transmission crank arm.

Still further, the drive mechanism is a linear drive mechanism.

Furthermore, actuating mechanism is the active grab, the active grab includes the flexible cylinder base of fixed setting, sliding connection has the telescopic link in the flexible cylinder base, and the front end of telescopic link is articulated the rear end of drive connecting rod, and the rear end of telescopic link is articulated to have an L shape handle, and it has the biography power connecting rod to articulate on the L shape handle, and the biography power connecting rod front end articulates on the flexible cylinder base, and the rear end of biography power connecting rod articulates in the turning position of L shape handle.

More preferably, the bearing seat comprises a base and a bearing block, the base is fixedly arranged, the bearing block is detachably connected to the base, a limiting groove extending along the vertical direction is formed in the base, the bearing block is clamped in the limiting groove, a fixed stop block is arranged at the bottom of the limiting groove, and an adjusting gasket can be inserted between the lower end of the bearing block and the fixed stop block; the bearing block is fixed on the base through a locking bolt, and the upper end face of the bearing block is used for bearing a workpiece.

As described above, the clamp for clamping the workpiece according to the present invention has the following advantages: in the clamp for clamping the workpiece, the rotating shaft is driven by the driving mechanism to rotate back and forth so as to drive the clamping arm to press the chuck to the bearing seat and press the workpiece or separate from the bearing seat to loosen the workpiece, so that the driving mechanism only needs to drive the rotating shaft to rotate for a certain angle to clamp the workpiece, and the transmission mode is convenient and fast.

Drawings

Fig. 1 is a perspective view of a clamp for clamping a workpiece according to the present invention.

Fig. 2 is a schematic perspective view of a clamp for clamping a workpiece according to the present invention, and shows another angle of view.

Description of reference numerals

1 first fixing seat

2 second fixing seat

3 bearing seat

4 clamping arm

5 chuck

6 rotating shaft

7 transmission crank arm

8 transmission connecting rod

9 screw connection

10 clamping block

11 drive crank arm

12 drive link

13 quick clamp

14 telescopic cylinder seat

15 expansion link

16L-shaped handle

17 force transmission connecting rod

18 base

19 bearing block

20 limiting groove

21 fixed stop block

22 adjusting shim

23 locking bolt

24 positioning pin

Detailed Description

The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a clamp for clamping a workpiece, including a first fixing base 1, a second fixing base 2 and a bearing base 3, wherein the bearing base 3 is used for bearing the workpiece;

a clamping arm 4 is arranged on the first fixing seat 1, the lower end of the clamping arm 4 is hinged to the first fixing seat 1, and a chuck 5 is arranged at the upper end of the clamping arm 4;

the second fixing seat 2 is connected with a rotating shaft 6, the rotating shaft 6 is fixedly connected with a transmission connecting lever 7, a transmission connecting rod 8 is connected between the transmission connecting lever 7 and the middle part of the clamping arm 4, one end of the transmission connecting rod 8 is hinged to the middle part of the clamping arm 4, the other end of the transmission connecting rod 8 is hinged to the end part of the transmission connecting lever 7, and the rotating shaft 6 is driven by a driving mechanism to rotate back and forth so as to drive the clamping arm 4 to press the chuck 5 to the bearing seat 3 and compress the workpiece or keep away from the bearing seat 3 to loosen the workpiece.

In the clamp for clamping the workpiece, the rotating shaft 6 is driven by the driving mechanism to rotate back and forth so as to drive the clamping arm 4 to press the chuck 5 to the bearing seat 3 to press the workpiece or to be far away from the bearing seat 3 to loosen the workpiece, so that the driving mechanism only needs to drive the rotating shaft 6 to rotate for a certain angle to clamp the workpiece, and the transmission mode is convenient and fast.

As shown in fig. 1, the clamping arm 4 is in the shape of a sickle, the clamping arm 4 can be roughly divided into an upper part and a lower part, the lower part is in the shape of an inverted "L", the upper part is in the shape of a bent right-angle bend, the lower end of the clamping arm 4 is rotatably connected with the upper end of the first fixing seat 1 through a pin shaft, and the middle part (the connection part of the lower part and the upper part of the clamping arm 4) of the clamping arm 4 is rotatably connected with the transmission connecting arm 7 through a pin shaft. When the rotating shaft 6 rotates towards the left (the left side in the view of fig. 1) to make the transmission connecting lever 7 swing towards the left (the right side in the view of fig. 1), the transmission connecting rod 8 pushes the clamping arm 4 towards the left to make the clamping arm 4 rotate towards the left, and the chuck 5 at the upper end of the clamping arm 4 is pressed towards the bearing seat 3 to press the workpiece. When the rotating shaft 6 rotates towards the right to make the transmission connecting lever 7 swing towards the right (the right side with the view angle in fig. 1 as a reference), the transmission connecting rod 8 pulls the clamping arm 4 towards the right to make the clamping arm 4 rotate towards the right, and the chuck 5 at the upper end of the clamping arm 4 is far away from the bearing seat 3 to loosen the workpiece.

Referring to fig. 1 and 2, the chuck 5 includes a screw connecting portion 9 and a clamping block 10 disposed at a lower end of the screw connecting portion 9, the screw connecting portion 9 is detachably connected to an upper end of the clamping arm 4, and when the chuck 5 presses the workpiece against the carrier 3, the screw connecting portion 9 is perpendicular to the surface of the workpiece, so that the workpiece is pressed perpendicularly to the surface of the workpiece, and the clamping effect is good.

As shown in fig. 1 and 2, the second fixed seat 2 includes two opposite bearing seats, and the rotating shaft 6 is rotatably supported on the two bearing seats. The length of the rotating shaft 6 can be set according to the space requirement in the layout mode, so that the moment can be transmitted in a long distance, and the space layout requirement is met. In order to facilitate the driving of the rotating shaft 6 to rotate back and forth, as shown in fig. 1 and 2, a driving connecting lever 11 is further arranged on the rotating shaft 6, the driving connecting lever 11 is connected with a driving mechanism through a driving connecting rod 12, the driving mechanism can drive the driving connecting rod 12 to move back and forth along the length direction of the driving connecting rod, as shown in fig. 1, the driving connecting lever 7 is located above the axis of the rotating shaft 6, and the driving connecting lever 11 is located below the axis of the rotating shaft 6, so that when the driving connecting rod 12 moves towards the right (the right side with the visual angle in fig. 1 as a reference), the driving connecting lever 11 swings towards the right to drive the rotating shaft 6 to rotate, so as to drive the driving connecting lever 7 to swing upwards, and finally drive the clamping arm 4 to press the bearing seat 3 to press the workpiece tightly; when the driving link 12 moves to the left (the right side with reference to the view angle in fig. 1), the driving crank arm 11 swings to the left to drive the rotating shaft 6 to rotate, so as to drive the transmission crank arm 7 to swing downwards, and finally drive the clamping arm 4 to move away from the bearing seat 3 to loosen the workpiece. In order to enable the clamp for clamping the workpiece to clamp the workpiece quickly, as shown in fig. 1, the length of the driving crank arm 11 is smaller than that of the transmission crank arm 7, so that the driving crank arm 11 only needs to swing by a small amplitude to enable the transmission crank arm 7 and the clamping arm 4 to swing by a large amplitude to clamp the workpiece quickly.

As mentioned above, the driving connecting lever 11 is connected to the driving mechanism through the driving link 12, and the driving mechanism can drive the driving link 12 to move back and forth along the length direction thereof, and as a preferred embodiment, the driving mechanism is a linear driving mechanism. Referring to fig. 1, the driving mechanism is a quick clamp 13, the quick clamp 13 includes a telescopic cylinder seat 14 fixedly disposed, a telescopic rod 15 is slidably connected in the telescopic cylinder seat 14, a front end of the telescopic rod 15 is hinged to a rear end of the driving connecting rod 12, a rear end of the telescopic rod 15 is hinged to an L-shaped handle 16, a force transmission connecting rod 17 is hinged to the L-shaped handle 16, a front end of the force transmission connecting rod 17 is hinged to the telescopic cylinder seat 14, and a rear end of the force transmission connecting rod 17 is hinged to a corner of the L-shaped handle 16. When the L-shaped handle 16 is pulled and pressed leftward (leftward direction with reference to the view angle in fig. 1), the left end of the force transmission connecting rod 17 swings downward, the L-shaped handle 16 pulls the telescopic rod 15 backward, the telescopic rod 15 moves leftward, and finally the clamping arm 4 performs a workpiece loosening action; when the L-shaped handle 16 is pulled and pressed rightward (rightward direction with reference to the view angle in fig. 1), the left end of the force transmission connecting rod 17 swings upward, the L-shaped handle 16 pushes the telescopic rod 15 forward, the telescopic rod 15 moves rightward, and finally the clamping arm 4 performs the action of clamping the workpiece.

As shown in fig. 2, the bearing seat 3 includes a base 18 fixedly disposed and a bearing block 19 detachably connected to the base 18, a limiting groove 20 extending in the up-down direction is disposed on the base 18, the bearing block 19 is clamped in the limiting groove 20, the bearing block 19 is fixed on the base 18 through a locking bolt 23, and an upper end surface of the bearing block 19 is used for bearing a workpiece, so that the height position of the workpiece on the bearing seat 3 can be adjusted by replacing the bearing block 19, and various requirements can be met. As shown in fig. 2, a fixed stop 21 is arranged at the bottom of the limiting groove 20, and an adjusting gasket 22 can be inserted between the lower end of the bearing block 19 and the fixed stop 21; this allows a further precise adjustment of the height position of the workpiece on the carrier 3. In order to accurately position the bearing block 19 and the base 18, as shown in fig. 2, a right positioning pin 24 is connected between the bearing block 19 and the base 18 to accurately position the two.

Based on the technical scheme of the embodiment, the clamp for clamping the workpiece can quickly clamp the workpiece, due to the exquisite structural design, the L-shaped handle of the operating clamp and the clamped workpiece can be staggered at a far position in space, and the arrangement mode of the rotating shaft and the bent clamping arm can avoid the interference of other parts, so that the workpiece can be conveniently and reliably clamped under the condition of limited space. The clamp for clamping the workpiece is particularly suitable for clamping a vehicle door check tool of an automobile on a main check tool of a vehicle body.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A clamp for clamping a workpiece is characterized by comprising a first fixed seat, a second fixed seat and a bearing seat, wherein the bearing seat is used for bearing the workpiece;

the second fixing seat is connected with a rotating shaft, the rotating shaft is fixedly connected with a transmission connecting lever, a transmission connecting rod is connected between the transmission connecting lever and the middle part of the clamping arm, one end of the transmission connecting rod is hinged to the middle part of the clamping arm, the other end of the transmission connecting rod is hinged to the end part of the transmission connecting lever, and the rotating shaft is driven by a driving mechanism to rotate back and forth so as to drive the clamping arm to press the chuck to the bearing seat and compress the workpiece or keep away from the bearing seat to loosen the workpiece.

2. The clamp of claim 1 wherein said clamping arm is in the shape of a sickle.

3. The clamp of claim 1, wherein the chuck includes a screw connecting portion and a clamping block provided at a lower end of the screw connecting portion, the screw connecting portion being detachably connected to an upper end of the clamping arm.

4. A clamp for clamping a workpiece as recited in claim 1, wherein the second holder comprises two oppositely disposed bearing blocks, the shaft being rotatably supported on the two bearing blocks.

5. The clamp for clamping the workpiece according to claim 1, wherein the rotating shaft is further provided with a driving connecting lever, the driving connecting lever is connected with a driving mechanism through a driving connecting rod, and the driving mechanism can drive the driving connecting rod to move back and forth along the length direction of the driving connecting rod.

6. A clamp for clamping a workpiece as claimed in claim 5, wherein the drive mechanism is a linear drive mechanism.

7. The clamp of claim 5 wherein said drive crank length is less than said drive crank length.

8. The clamp for clamping a workpiece according to claim 5, wherein the driving mechanism is a quick clamp, the quick clamp comprises a fixedly arranged telescopic cylinder base, a telescopic rod is slidably connected in the telescopic cylinder base, the front end of the telescopic rod is hinged to the rear end of the driving connecting rod, the rear end of the telescopic rod is hinged to an L-shaped handle, a force transmission connecting rod is hinged to the L-shaped handle, the front end of the force transmission connecting rod is hinged to the telescopic cylinder base, and the rear end of the force transmission connecting rod is hinged to a corner position of the L-shaped handle.

9. The clamp for clamping a workpiece according to claim 8, wherein the bearing seat comprises a base which is fixedly arranged and a bearing block which is detachably connected to the base, the base is provided with a limiting groove which extends along the vertical direction, the bearing block is clamped in the limiting groove, the bottom of the limiting groove is provided with a fixed stop block, and an adjusting gasket can be inserted between the lower end of the bearing block and the fixed stop block; the bearing block is fixed on the base through a locking bolt, and the upper end face of the bearing block is used for bearing a workpiece.