CN210650735U

CN210650735U - Clamping device with adjustable clamping force

Info

Publication number: CN210650735U
Application number: CN201921643770.2U
Authority: CN
Inventors: 张晓龙; 甘亚光
Original assignee: Inexbot Technology Co ltd
Current assignee: Inexbot Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-02
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a clamping device with adjustable clamping force. The device includes the base, the base upside is equipped with first splint and second splint, second splint and base sliding connection to be connected with driver part, be equipped with the connecting rod on the second splint, the outer end of connecting rod is fixed with unsteady splint, the second splint are equipped with first proximity sensor towards one side of unsteady splint, the connecting rod that is located first through-hole is equipped with spacing portion, be equipped with a plurality of adjustment cushion blocks in the first through-hole, be equipped with the spring between adjusting block and the spacing portion, the first through-hole outside is fixed with the dog, the base downside is fixed with the connecting seat. The utility model discloses a change the quantity of adjustment cushion or select different elastic system's spring, can realize adjusting this clamping device's centre gripping dynamics, and then applicable in the operation occasion of different centre gripping dynamics demands, drive unit sets up the downside of base, does not occupy horizontal space, avoids influencing the work piece centre gripping operation, and its structural stability is strong, is convenient for adjust and overhaul.

Description

Clamping device with adjustable clamping force

Technical Field

The invention relates to the field of clamping devices, in particular to a clamping device with adjustable clamping force.

Background

In an automated production line, a clamping device is generally mounted on a robot arm to automatically clamp a workpiece, and then the workpiece is welded, assembled or displaced. The clamping device is characterized in that the clamping device is a clamping device with fixed force, the clamping force of the clamping device is determined by a part applying clamping force, the clamping force required by different parts is different, under general conditions, the clamping force required by a workpiece with large mass is larger, the clamping force required by a workpiece with light mass is smaller, and workpieces with special structures are also clamped by a battery cell box body or other box body-shaped workpieces, and if the clamping force is larger, the workpiece is damaged or deformed. Therefore, the existing clamping device needs to be designed according to different use occasions respectively, and the clamping force cannot be adjusted after the design is completed, so that the application occasions and the range of the clamping device are limited, and therefore, the clamping device with the adjustable clamping force is necessary to be provided.

Disclosure of Invention

The invention aims to provide a clamping device with adjustable clamping force, aiming at the defects in the prior art.

In order to achieve the above purpose, the invention provides a clamping device with adjustable clamping force, which comprises a base, wherein a first clamping plate and a second clamping plate which are parallel to each other are arranged on the upper side of the base, the first clamping plate is fixedly connected to the upper side of the base, a sliding groove is arranged on the base, the second clamping plate is connected with the sliding groove in a sliding manner, a driving part is connected to the second clamping plate, a plurality of through holes which are perpendicular to the first clamping plate are transversely arranged on the second clamping plate, a connecting rod is arranged in each through hole, each through hole comprises a first through hole far away from the side of the first clamping plate and a second through hole close to the side of the first clamping plate, the inner diameter of each first through hole is larger than that of each second through hole, one end of each connecting rod extends out of the corresponding second through hole, a floating clamping plate is fixed to the outer end of each connecting rod, a first proximity sensor is arranged on the side, the connecting rod that is located first through-hole is equipped with spacing portion, spacing portion sliding connection is in first through-hole, be equipped with a plurality of adjustment cushion blocks in the first through-hole, adjustment cushion block middle part is equipped with the hole that can supply the connecting rod to pass, be equipped with the spring between adjustment cushion block and the spacing portion, the interior tip interlude spring setting of connecting rod, the first through-hole outside can be dismantled and be fixed with the dog, the base downside is fixed with the connecting seat.

Furthermore, the connecting rod is fixedly connected with the floating clamping plate through a countersunk bolt.

Further, the spout is the cross, the spout downside is stretched out to the lower extreme of second splint, driver part is connected with the lower extreme of second splint, and it is two effect driver part, driver part bolted connection is in the downside of base.

Furthermore, the sliding groove is exposed from the side end of the base, an end plate is fixed on the side end of the base through a bolt, a second proximity sensor is further arranged on the upper side of the base, and the second proximity sensor is connected with a control unit of the driving component.

Furthermore, a supporting stop block matched with the sliding groove is arranged on the inner side of the end plate.

Furthermore, the connecting seat includes the pedestal that is the several words form, each corner of pedestal all is equipped with a plurality of backup pads.

Further, the through holes comprise 4.

Furthermore, a plurality of stabilizing rib plates are fixed between one side of the first clamping plate, which is far away from the second clamping plate, and the base.

Further, the driving part comprises a hydraulic cylinder and an air cylinder.

Has the advantages that: according to the clamping device, the floating clamp plate is arranged on one side of the second clamp plate, the first proximity sensor can prevent the floating clamp plate from being in direct contact with the second clamp plate in the clamping process, the clamping force is provided by the reaction force in the spring compression state, the clamping force of the clamping device can be adjusted by changing the number of the adjusting cushion blocks or selecting springs of different elastic systems, and therefore the clamping device is suitable for operation occasions with different clamping force requirements.

Drawings

FIG. 1 is a schematic structural view of a clamping device with adjustable clamping force according to an embodiment of the present invention;

FIG. 2 is a left side view in section B-B of FIG. 1;

fig. 3 is a partially enlarged schematic view of the area a in fig. 1.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a clamping device with adjustable clamping force, the clamping device includes a base 1, and a first clamping plate 2 and a second clamping plate 3 are disposed on an upper side of the base 1, wherein the first clamping plate 2 and the second clamping plate 3 are disposed in parallel, the first clamping plate 2 can be fixed on the upper side of the base 1 by welding or bolting, in order to prevent the first clamping plate 2 from deforming during use, the thickness of the first clamping plate 2 can be appropriately increased, and preferably, a plurality of stabilizing ribs 4 are fixed between a side of the first clamping plate 2 away from the second clamping plate 3 and the base 1. Be equipped with spout 5 on base 1,

second splint

3 and 5 sliding connection of spout, second splint 3 are connected with driver part 6, and driver part 6 can adopt pneumatic cylinder or cylinder, and then, when driver part 6 is flexible, can drive second splint 3 and be close to and keep away from first splint 2, and then realize pressing from both sides tightly and loosen the operation.

In order to realize that the clamping force is adjustable, transversely be equipped with a plurality of through-holes 7 on second splint 3, the direction of a plurality of through-holes 7 sets up with first splint 2 is perpendicular, be equipped with a connecting rod 8 in every through-hole 7, through-hole 7 includes the first through-hole 71 of keeping away from first splint 2 side and is close to the second through-hole 72 of first splint side 2, wherein, the internal diameter of first through-hole 71 is greater than the internal diameter of second through-hole 72, the outside is stretched out from second through-hole 72 to the one end of connecting rod 8, and its outer end is fixed with floating clamp plate 9, first splint 2 and the relative one side of floating clamp plate 9 can set up to different shapes according to the needs of the work piece of. The connecting rod 8 positioned in the first through hole 71 is provided with a limiting part 81, the limiting part 81 is connected in the first through hole 71 in a sliding manner, a plurality of adjusting cushion blocks 10 are arranged in the first through hole 71, the middle parts of the adjusting cushion blocks 10 are provided with holes 11 through which the connecting rod 8 can pass, a spring 12 is arranged between the adjusting cushion blocks 10 and the limiting part 81, the inner end part of the connecting rod 8 is inserted into the spring 12, a stop 25 is fixed at the outer side of the first through hole 71 through a plurality of bolts 13 or other manners, a first proximity sensor 14 is arranged at one side of the second splint 3 facing the floating splint 9, the first proximity sensor 14 is connected with a control unit of the driving part 6, the driving part 6 controls the second splint 3 to move towards the first splint 2, in the clamping process, the floating splint 9 drives the connecting rod 8 to compress the spring 12, so that the clamping force is gradually increased until the first proximity sensor 14 detects, the first proximity sensor 14 sends a signal to the control unit of the driving member 6, and the control unit controls the stop of the clamping operation by controlling the operation of the control solenoid valve of the driving member 6. A coupling seat 16 is fixed to the lower side of the base 1 by a plurality of bolts 15 so as to be coupled with a robot or other devices. The clamping force can be adjusted by increasing or decreasing the number of the adjusting cushion blocks 10 or selecting the springs 12 with different elastic coefficients.

In order to fix the connecting rod 8 and the floating clamp plate 9, preferably, a threaded hole 17 is formed at the outer end of the connecting rod 8, a connecting hole 18 is formed in the floating clamp plate 9 at a position opposite to the threaded hole in the connecting rod 8, and then a countersunk bolt 19 penetrates through the connecting hole 18 and is screwed into the threaded hole 17, so that the connecting rod 8 and the floating clamp plate 9 are fixedly connected through the bolt.

The sliding groove 5 of the embodiment of the invention is preferably arranged in a cross shape, the lower end of the second clamping plate 3 extends out of the lower side of the sliding groove 5, the driving component 6 is connected with the lower end of the second clamping plate 3, the driving component 6 is not easy to deviate when pushing the second clamping plate 3 to move, the driving component 6 is a double-acting driving component, a piston rod of the driving component 6 is clamped when being contracted, and is opened when being extended. The drive member 6 is preferably attached to the underside of the base 1 by a number of bolts 20.

In order to facilitate installation and maintenance, the sliding chute 5 is exposed from the side end of the base 1, the other end of the base 1 of the sliding chute 5 is of a closed structure, the second clamping plate 3 can be installed into the sliding chute 5 from the exposed side, an end plate 22 is fixed at the side end of the base 1 through a bolt 21, the end plate 22 is fixed on the base 1 to realize sealing after the second clamping plate 3 is installed, in order to avoid damage caused by the fact that the second clamping plate 3 impacts the end plate 22, a second proximity sensor 23 is further arranged on the upper side of the base, and the second proximity sensor 23 is connected with a control unit of the driving component 6. The second proximity sensor 23 may limit the open position of the second clamp plate 3, and when the second proximity sensor 23 detects the approach of the second clamp plate 3, the control unit of the driving part 6 controls the solenoid valve to operate, thereby stopping the opening operation. In order to prevent the base 1 from deforming in the using process, a supporting stop 24 is arranged on the inner side of the end plate 22, the external dimension of the supporting stop 24 is matched with the sliding groove 5, and when the end plate 22 is fixed on the base 1, the supporting stop 24 is inserted into the sliding groove 5 in a sliding mode to play a supporting role. In order to prevent connecting socket 16 from deforming under stress, connecting socket 16 of the present embodiment includes a socket body 161 having a shape of a Chinese character 'ji', a plurality of support plates 162 are disposed at each corner of socket body 161, and support plates 162 preferably have a shape of a triangle.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to those of ordinary skill in the art. Without departing from the principle of the invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the scope of the invention.

Claims

1. A clamping device with adjustable clamping force is characterized by comprising a base, wherein a first clamping plate and a second clamping plate which are parallel to each other are arranged on the upper side of the base, the first clamping plate is fixedly connected to the upper side of the base, a sliding groove is formed in the base, the second clamping plate is connected with a driving component in a sliding mode, a plurality of through holes perpendicular to the first clamping plate are transversely formed in the second clamping plate, a connecting rod is arranged in each through hole and comprises a first through hole far away from the side of the first clamping plate and a second through hole close to the side of the first clamping plate, the inner diameter of each first through hole is larger than that of each second through hole, one end of each connecting rod extends out of each second through hole, a floating clamping plate is fixed to the outer end of each connecting rod, a first proximity sensor is arranged on one side, facing the floating clamping plate, of the second clamping plate, and the first proximity sensor is connected with a, the connecting rod that is located first through-hole is equipped with spacing portion, spacing portion sliding connection is in first through-hole, be equipped with a plurality of adjustment cushion blocks in the first through-hole, adjustment cushion block middle part is equipped with the hole that can supply the connecting rod to pass, be equipped with the spring between adjustment cushion block and the spacing portion, the interior tip interlude spring setting of connecting rod, the first through-hole outside can be dismantled and be fixed with the dog, the base downside is fixed with the connecting seat.

2. The clamping device with adjustable clamping force according to claim 1, wherein the connecting rod is fixedly connected with the floating clamping plate through a countersunk bolt.

3. The clamping device with adjustable clamping force according to claim 1, wherein the sliding groove is cross-shaped, the lower end of the second clamping plate extends out of the lower side of the sliding groove, the driving part is connected with the lower end of the second clamping plate and is a double-acting driving part, and the driving part is bolted on the lower side of the base.

4. A clamping device with adjustable clamping force as claimed in claim 3, wherein the sliding groove is exposed from the side of the base, the side of the base is bolted with an end plate, and the upper side of the base is further provided with a second proximity sensor, and the second proximity sensor is connected with the control unit of the driving member.

5. The clamping device with adjustable clamping force according to claim 4, wherein the inner side of the end plate is provided with a supporting stop matched with the sliding groove.

6. The clamping device with adjustable clamping force according to claim 1, wherein the connecting seat comprises a seat body in a shape of a Chinese character 'ji', and a plurality of supporting plates are arranged at each corner of the seat body.

7. The clamping device with adjustable clamping force according to claim 1, wherein the number of the through holes is 4.

8. The clamping device with the adjustable clamping force according to claim 1, wherein a plurality of stabilizing rib plates are fixed between one side of the first clamping plate, which is far away from the second clamping plate, and the base.

9. The clamping device with adjustable clamping force according to claim 1, wherein the driving part comprises a hydraulic cylinder and an air cylinder.