CN112223330A - Clamping device - Google Patents

Abstract

The invention discloses a clamping device which comprises a driving assembly, a supporting seat, a clamping jaw and a clamping assembly, wherein the clamping jaw is arranged on the supporting seat in a sliding mode, the driving assembly drives the clamping jaw to be restrained to slide along a set direction, the clamping assembly is arranged on the clamping jaw, the clamping assembly can self-adaptively clamp a to-be-clamped piece, clamping force of the clamping jaw can be stable, and the probability of falling of the clamping piece is reduced.

Description

Clamping device

Technical Field

The invention relates to the field of mechanical clamping jaws, in particular to a clamping device.

Background

The clamping jaw in the prior art generally adopts a hinged mode to connect a control system and a driving system due to the use occasion and the working characteristics of the clamping jaw, the moving track of the clamping jaw is a curve in the clamping process, and the clamping jaw is firstly contacted with a to-be-clamped piece in a point contact mode, so that the clamping force of the clamping jaw in the subsequent clamping process is unstable, the clamping effect is poor, and the clamping piece is easy to fall off.

Therefore, in order to solve the above problems, a clamping device is needed, which can stabilize the clamping force of the clamping jaw and reduce the probability of falling off of the clamping piece.

Disclosure of Invention

In view of the above, the present invention is to overcome the defects in the prior art, and provide a clamping device, which can stabilize the clamping force of the clamping jaw and reduce the probability of falling off of the clamping member.

The clamping device comprises a driving assembly, a supporting seat, a clamping jaw and a clamping assembly, wherein the clamping jaw is arranged on the supporting seat in a sliding mode, the driving assembly drives the clamping jaw to slide along a set direction in a restrained mode, the clamping assembly is arranged on the clamping jaw, and the clamping assembly can clamp a piece to be clamped in a self-adaptive mode.

Further, the clamping assembly comprises a base, a clamping piece and a power piece, wherein the base is arranged on the clamping jaw, the clamping piece is connected to the base in a self-adjusting mode through the power piece, and the power piece provides self-adjusting power for the clamping piece.

Further, drive assembly includes driving source and drive connecting rod, the drive connecting rod sets up in the power take off end of driving source, the clamping jaw is connected to the drive connecting rod.

Further, the drive source may drive the drive link to move longitudinally, which may drive the jaws to be constrained to slide in a set direction.

Further, the drive connecting rod includes two connecting rods and actuating lever, the power take off end of two connecting rods along vertical articulated joint support seat and driving source, actuating lever one side fixed connection is along vertically being close to the connecting rod of power take off end, the clamping jaw is connected to the actuating lever opposite side, the drive the clamping jaw can be restrained slide along setting for the direction.

Further, drive assembly and clamping jaw set up side by side in the supporting seat along direction of height, the actuating lever includes one section of connecting rod and connecting rod two-stage process, one section of connecting rod is the fixed connection of angle along vertically being close to power take off's connecting rod, the connecting rod two-stage process is one section of fixed connection connecting rod of angle along direction of height, one section one side connection clamping jaw is kept away from along direction of height to the connecting rod two-stage process, the drive the clamping jaw can be restrained slide along setting for the direction.

Further, the supporting seat has transversely been seted up the clamping jaw spout along transversely, clamping jaw sliding connection clamping jaw spout, the connecting rod spout has vertically been seted up along on the clamping jaw, the connecting rod two-stage process is along longitudinal motion in the connecting rod spout, the drive the clamping jaw can be restrained along lateral sliding.

Furthermore, be provided with the deflector on the holder, there is the guide way that is used for with the deflector complex on the base, the deflector is adjusted in the guide way through the power that power spare provided.

Further, a baffle is arranged on the base, the power part is connected with the baffle and the guide plate, and the power part has a force which enables the guide plate and the baffle to be close to or far away from each other.

Further, the holder centre gripping is treated holder one side and is provided with the adaptation piece, the adaptation piece has deformation and the ability of recovering deformation after the centre gripping during the centre gripping.

The invention has the beneficial effects that: according to the clamping device disclosed by the invention, the clamping jaw is slidably constrained on the supporting seat, and the driving assembly drives the clamping jaw to move along the set direction, so that the clamping force of the clamping jaw can be effectively improved, and the clamping effect of the clamping jaw is ensured.

Drawings

The invention is further described below with reference to the following figures and examples:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic bottom view of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 1 at A according to the present invention;

FIG. 5 is a schematic view of the structure of FIG. 1 at B according to the present invention;

FIG. 6 is a schematic view of the structure of FIG. 2 at C in accordance with the present invention;

fig. 7 is a schematic structural view of the guide plate of the present invention.

Detailed Description

FIG. 1 is a schematic structural diagram of the present invention, and FIG. 1 is a schematic structural diagram of the present invention; FIG. 2 is a schematic top view of the present invention; FIG. 3 is a schematic bottom view of the present invention; FIG. 4 is a schematic view of the structure of FIG. 1 at A according to the present invention; FIG. 5 is a schematic view of the structure of FIG. 1 at B according to the present invention; FIG. 6 is a schematic view of the structure of FIG. 2 at C in accordance with the present invention; fig. 7 is a schematic structural diagram of the guide plate of the present invention, and in this embodiment, the transverse direction is along the clamping direction of the clamping jaw 3, and the longitudinal direction is the length direction of the clamping jaw 3.

Clamping device in this embodiment includes drive assembly, supporting seat 1, clamping jaw 3 and centre gripping subassembly, clamping jaw 3 slides and sets up on supporting seat 1, the drive assembly drive clamping jaw 3 can be restrained slide along setting for the direction, the centre gripping subassembly sets up on clamping jaw 3, but the centre gripping of centre gripping subassembly self-adaptation treats the holder. Can be restrained and slide along setting for the direction, have the centre gripping orbit of setting for along the direction of setting for clamping jaw 3 promptly, treat the holder along the camber when comparing 3 centre grippings of clamping jaw in prior art and carry out the centre gripping, this scheme sets clamping jaw 3 to the structure of sliding the centre gripping along setting for the direction, the area of contact when the centre gripping has been improved greatly, and the centre gripping orbit of restraint clamping jaw 3, can effectively increase clamping jaw 3's clamping capacity, and it treats the holder to last to treat with the mode centre gripping of face contact at the clamping-process, guarantee the stability of centre gripping.

In this embodiment, the clamping assembly comprises a base 4, a clamping member 46 and a power member 45, the base 4 is arranged on the clamping jaw 3, the clamping member 46 is connected to the base 4 in a self-adjusting manner through the power member 45, and the power member 45 provides self-adjusting power for the clamping member 46. The self-adaptation is treated the holder and is carried out the centre gripping when the centre gripping subassembly can be when the centre gripping, is convenient for carry out the centre gripping to heterogeneous component, increases clamping jaw 3's application scenario to the self-adaptation centre gripping still possesses good centre gripping effect, can continuously keep the stability of centre gripping point in the clamping process, the problem that the holder drops of treating that the too big cause of clamping-force treats holder damage or clamping-force is less to cause can not appear.

In this embodiment, the driving assembly includes a driving source 2 and a driving connecting rod, the driving connecting rod is disposed at a power output end of the driving source 2, and the driving connecting rod is connected to the clamping jaw 3. The driving assembly adopts a connecting rod and a driving source 2 for driving the connecting rod, the driving source 2 is an air cylinder, and the scheme adopts a single air cylinder to drive the driving connecting rod so as to drive the clamping jaw 3 to perform clamping movement, compared with the driving assembly in the prior art, firstly, the driving source 2 of the scheme is the matching of a single air cylinder and the driving connecting rod, compared with the structure of multiple air cylinders or multiple controls in the prior art, the scheme has simple structure, does not need to set different motor movement angles, and has stable output force; secondly, the clamping function of the multi-linkage assembly in the prior art can be realized by matching a single air cylinder with the driving connecting rod, and the clamping performance is more excellent than that in the prior art; last this scheme is power output end through driving source 2 for drive connecting rod output power, drives clamping jaw 3 and is the clamping motion, its stable in structure, it is excellent to pass power effect, and it is less to pass the energy loss among the power process, and the drive ratio is high, compare clamping jaw 3 among the prior art, the clamping-force of this device is more controllable, and each part atress of clamping jaw 3 is even, makes this device life obtain very big improvement, of course driving source 2 also can be a plurality of cylinders linkage cooperation drive connecting rod, can reach the effect of improvement clamping-force equally, but probably increase clamping jaw 3's the space of arranging, need select suitable driving source 2 according to actual conditions, no longer describe herein.

In this embodiment, the driving source 2 can drive the driving link to move in the longitudinal direction, and the driving link can drive the clamping jaws 3 to slide in the set direction in a constrained manner. Because this scheme adopts single cylinder, it only possesses the condition that can follow the motion of drive connecting rod along single degree of freedom, and it can also set up the drive connecting rod among the drive this scheme of a plurality of linkage cylinders, in this scheme clamping jaw 3 can be retrained along the lateral sliding along, certainly the direction that can retrained can also be according to the cooperation adjustment of driving source 2 with the drive connecting rod to thereby it is the centre gripping action along established direction to adapt to driving source 2 drive connecting rod drive clamping jaw 3, no longer repeated here.

In this embodiment, the drive connecting rod includes two connecting rods and actuating lever, the power take off end of two connecting rods along vertical articulated joint support seat 1 and driving source 2, the connecting rod that is close to power take off end along vertical drive lever one side fixed connection, clamping jaw 3 is connected to the actuating lever opposite side, the drive the clamping jaw 3 can be restrained slide along setting for the direction. The two connecting rods are hinged by two connecting rods, which is the prior art, and are not described herein again, the two connecting rods are hinged by connecting the power output ends of the supporting seat 1 and the driving source 2 along the longitudinal direction, so that the motion stability of the cylinder can be effectively improved, the clamping effect can be ensured, and the clamping precision can be improved, the driving rod is adapted to be connected with the clamping jaw 3, the clamping jaw 3 is driven to perform the clamping action along the set direction, the driving rod is connected with the clamping jaw 3 in a sliding manner, the clamping jaw 3 is driven to perform the clamping action through the relative motion of the driving rod and the clamping jaw 3, the relative motion structure can also be the motion of the driving rod and the clamping jaw 3 relative to other components at the same time, so as to realize that the clamping jaw 3 is driven to perform the clamping motion by the connecting rod, the structure is not unique, which is not described herein again, the, thereby enabling the clamping/unclamping action of the clamping jaw 3.

In this embodiment, the driving assembly and the clamping jaw 3 are arranged in parallel in the supporting seat 1 along the height direction, the driving rod includes a first section 24 of connecting rod and a second section 25 of connecting rod, the first section 24 of connecting rod is fixedly connected with the connecting rod which is close to the power output end along the longitudinal direction, the second section 24 of connecting rod is fixedly connected with the connecting rod which is close to the power output end along the longitudinal direction, the obtuse angle connection facilitates the control of the driving rod along the longitudinal direction, the acute angle has the effect of convenient control and stable stress, the force transmission direction drives the clamping jaw 3 along the longitudinal direction which is the same as the output power of the output end of the driving source, and the acute angle is set, so that a part of the force can be output along the longitudinal direction opposite to the output power of the output end of the driving source, the power output efficiency is reduced, and the description is, in the scheme, the two connecting rod sections 25 are approximately and vertically fixedly connected with the one connecting rod section 24 along the height direction, the approximately vertical extension means that manufacturing and connection errors can be allowed on the vertical basis, and details are not repeated, the scheme includes that the two connecting rods comprise a first connecting rod 21 and a second connecting rod 22, the cross section of the first connecting rod 21 along the length direction of the first connecting rod is I-shaped, a connecting boss is arranged on the supporting seat 1 and inserted into one side of the I-shaped to be hinged with the first connecting rod 21, the second connecting rod 22 is inserted into the other side of the I-shaped to be hinged with the first connecting rod 21, a connecting part 23 which is hinged with the second connecting rod 22 is arranged on the power output end of the driving source, so that the two connecting rods can do reciprocating motion in cooperation with the power output end of the driving source, the structural strength and the service life are improved, the first connecting rod 21 and, and can effectively improve the structural stability of drive connecting rod, connecting rod two-section 25 is kept away from one section 24 one side of connecting rod along the direction of height and is connected clamping jaw 3, drives what clamping jaw 3 can be restrained slides along setting for the direction.

In this embodiment, the supporting seat 1 is transversely provided with two clamping jaw sliding grooves 11, the clamping jaws 3 are transversely provided with two corresponding driving connecting rods, and are driven by a single cylinder, the connecting portion 23 is i-shaped along the length direction thereof, the second connecting rod 22 is inserted into the power output end of the i-shaped side hinged to the driving source, the clamping jaws 3 are slidably connected to the clamping jaw sliding grooves 11, so that the movement along the transverse direction can be realized, and the reciprocating movement of the single cylinder can control the two clamping jaws 3 to approach or separate from each other to realize the clamping/releasing action, of course, the clamping jaws 3 can be provided with a plurality of connecting portions according to actual conditions, and are connected to different driving sources 2 for driving, which is not described herein again, the clamping jaw connecting portion 32 is provided on one side of the clamping jaw sliding groove 11, and the clamping jaw connecting portion 32 is approximately perpendicularly connected to the clamping jaws, the clamping jaw connecting portion 32 is clamped inside the clamping jaw sliding groove 11 and is in sliding fit with the clamping jaw sliding groove, that is, the section of one side, along the length direction of the clamping jaw 3, which is connected with the clamping jaw sliding groove 11, is approximately in a T shape, the upper portion of the T shape is clamped in the clamping jaw sliding groove 11, the lower portion of the T shape extends out of the clamping jaw sliding groove 11, and the clamping jaw 3 is clamped/loosened by the movement of the clamping jaw connecting portion 32 in the clamping jaw sliding groove 11, the approximately in the T shape is only a structure, in the scheme, of the clamping jaw 3, which is connected with one side of the clamping jaw sliding groove 11, and is not repeated, a connecting rod sliding groove 31 is longitudinally formed in the clamping jaw 3, and the connecting rod second segment 25 longitudinally moves in the connecting. Set up connecting rod spout 31 and further improve clamping jaw 3 and the connection stability of drive connecting rod, also can improve this device overall structure's stability simultaneously, clamping jaw 3 all has stable the being connected with other structures of this device along its length direction's both sides to can effectively retrain the orbit of clamping jaw 3, can also stably improve clamping effect and the clamping-force of clamping jaw 3, have to connect to go to carry out the mode of centre gripping in clamping jaw 3 one side among the prior art, clamping jaw 3 in this device more has excellent clamping performance and the reliability of centre gripping, the lightening hole has been seted up on the supporting seat 1, reduces the unnecessary weight of device, so that do not influence under the condition of transmission and clamping effect, reduce overall device's weight, increase clamping jaw 3's clamping capacity and overall device's life, no longer describe herein.

In this embodiment, the clamping member 46 is provided with a guide plate 44, the base 4 is provided with a guide groove 47 for matching with the guide plate 44, and the guide plate 44 is adjusted in the guide groove 47 by the power provided by the power member 45. The guide plate 44 and the guide groove 47 are provided to improve the clamping effect of the clamping member 46, to ensure the clamping strength and the clamping accuracy, in the process of clamping, the clamping piece 46 is guided to move in a restraining way, the service life of the clamping piece 46 is prolonged, the guide plate 44 is connected to the guide groove 47 by a guide plate connecting portion 48 of an approximately convex shape, the guide plate connecting portion 48 and the guide plate 44 are integrally formed, and may be connected by gluing, riveting or the like, the guide groove 47 is opened along the clamping direction of the clamping jaw 3, and the side of the guide groove 47 away from the guide plate 44 along the clamping direction is closed, so that the guide plate connecting part 48 and the guide groove 47 which are matched along the clamping direction can better correspond to the clamping jaw 3, the special-shaped workpiece is clamped, and the condition that the clamping effect is influenced by interference of the clamping direction of the clamping jaw 3 and the clamping direction of the clamping piece 46 is avoided.

In this embodiment, the base 4 is provided with a baffle 42, the power member 45 connects the baffle 42 and the guide plate 44, and the power member 45 has a force for moving the guide plate 44 and the baffle 42 toward and away from each other. The power member 45 is power for providing adaptive adjustment for the clamping assembly, the guide plate 44 and the baffle plate 42 are close to/away from each other, that is, clamping/releasing of the corresponding clamping member 46, and details are not repeated herein, the clamping member 46 is provided with a limiting block 41 for limiting the clamping member 46, the clamping member 46 is a cylindrical rod, one side of the clamping member 46 penetrates through the baffle plate 42 and is matched with the baffle plate 42 through the limiting block 41 to prevent the power member 45 from falling off, the power member 45 is a spring externally sleeved on the clamping member 46, the spring abuts between the baffle plate 42 and the guide plate 44, the spring provides power for the axial movement of the limiting block 41 along the clamping member 46, the limiting block 41 is a cylindrical clamping table with a size larger than the radial size of the power member 45, the baffle plate 42 is provided with a clamping seat for clamping the clamping table, and the limiting block 41 is added to further improve the clamping effect of the device, the safety of the device is improved, the stability in the clamping process is ensured, the integral structure separation caused by the failure of the power part 45 is prevented, and the damage is caused, wherein the power part 45 can also be an air cylinder which is connected with the guide plate 44 and the baffle plate 42, but the structure is more complex and the adaptive space is larger; the power member 45 may also be a rubber elastic member, but the deformation effect is limited, and the structural strength is low, and may be selected according to the actual situation, which is not described herein again.

In this embodiment, the clamping member 46 clamps one side of the to-be-clamped member and is provided with an adaptive member 43, and the adaptive member 43 has the capability of deforming during clamping and recovering from deformation after clamping. The adapting piece 43 has a deformation force adapting to the shape of the piece to be clamped when clamping the piece to be clamped, and the adapting piece 43 has a restoring force restoring the shape of the adapting piece 43 before clamping the next piece to be clamped. The adaptive part 43 is an elastic ball made of rubber, so that the contact is made of rubber, the friction force of clamping can be enhanced, compared with a rigid contact, the rubber contact with a spring is adopted, the flexible effect of a pneumatic driving source is combined, the adaptability and the flexibility for clamping different workpieces are enhanced, the surfaces of the workpieces can be effectively protected from being damaged, the device is widely applicable to various fragile clamps, the elastic ball is fixedly connected with the clamping part 46, when the device is used for clamping, firstly the elastic ball contacts the to-be-clamped part, firstly the shape is conformed to be contacted with the to-be-clamped part, the to-be-clamped part is pre-clamped, then the power part 45 (namely the spring) begins to be stressed gradually through continuous clamping of the clamping jaw 3, at the moment, the elastic ball and the power part 45 clamp the to-be-clamped part integrally, further adapt to the shape of the to-clamped part, the to-clamped part is clamped, adaptive adjustment is carried out, and the to-be-clamped, and can not destroy and treat holder surface structure, and it is stable with the form centre gripping effect of face contact continuously during the centre gripping, the centre gripping subassembly is provided with the multiunit, sets up in keeping away from 11 one sides of clamping jaw spout along 3 length direction of clamping jaw in this scheme, and a plurality of centre gripping subassembly base 4 interconnect treats holder adaptability centre gripping, is a whole again when adapting alone, is convenient for treat the holder to the heterogeneity and carry out the centre gripping to the centre gripping effect is stable under the effect of clamping jaw 3, a plurality of centre gripping subassembly still can the array arrange or interval arrangement, no longer gives unnecessary details here. The supporting seat 1 can be arranged on a mechanical arm or other mechanisms according to actual conditions, and is not described herein again.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. A clamping device, characterized in that it comprises a drive assembly, a support base, a clamping jaw and a clamping assembly, the clamping jaw is slidably arranged on the support base, and the driving assembly drives the clamping jaw to be constrained. Slide along the set direction, the clamping assembly is arranged on the clamping jaw. 2 . The clamping device according to claim 1 , wherein the clamping assembly comprises a base, a clamping member and a power member, the base is arranged on the clamping jaw, and the clamping member is driven by the power member. 3 . Connected to the base in a self-adjusting manner, the power member provides self-adjusting power to the clamping member. 3 . The clamping device according to claim 1 , wherein the drive assembly comprises a drive source and a drive link, the drive link is arranged at the power output end of the drive source, and the drive link is connected to the clamp. 4 . claw. 4 . The clamping device according to claim 3 , wherein the driving source can drive the driving link to move in the longitudinal direction, and the driving link can drive the clamping jaw to be restrained by moving the driving link in the longitudinal direction. 5 . Swipe in the set direction. 5 . The clamping device according to claim 4 , wherein the drive link comprises a second link and a drive rod, and the second link is hingedly connected to the support base and the power output end of the drive source along the longitudinal direction, so the One side of the driving rod is fixedly connected with the connecting rod which is close to the power output end in the longitudinal direction, and the other side of the driving rod is connected with the clamping jaw. 6 . The clamping device according to claim 5 , wherein the driving assembly and the clamping jaw are arranged side by side on the support base along the height direction, and the driving rod comprises a connecting rod section and a connecting rod section. 6 . The first section of the rod is fixed at an angle in the longitudinal direction to the connecting rod that is close to the power output end in the longitudinal direction, and the second section of the connecting rod is fixedly connected to the first section of the connecting rod at an angle in the height direction. Side attachment jaws. 7 . The clamping device according to claim 6 , wherein the support base is provided with a gripper chute along the lateral direction, the gripper is slidably connected to the gripper chute, and the gripper is longitudinally provided with a gripper. 8 . A connecting rod chute, the second segment of the connecting rod moves longitudinally in the connecting rod chute, and the clamping jaws are driven to be constrained to slide laterally. 8 . The clamping device according to claim 2 , wherein a guide plate is provided on the clamping member, a guide groove is provided on the base for matching with the guide plate, and the guide plate is provided by a power member. 9 . The power is adjusted in the guide groove. 9 . The clamping device according to claim 8 , wherein a baffle plate is provided on the base, the power member connects the baffle plate and the guide plate, and the power member has the function of making the guide plate and the baffle plate approach each other. 10 . /away force. 10 . The clamping device according to claim 2 , wherein an adaptor is provided on one side of the clamp to clamp the part to be clamped, and the adaptor has deformation during clamping and recovery deformation after clamping. 11 . Ability.

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