CN217534542U

CN217534542U - Clamping device

Info

Publication number: CN217534542U
Application number: CN202123107979.7U
Authority: CN
Inventors: 台德亮; 梅宝军; 刘大磊
Original assignee: Hefei Energy Saving Technology Co ltd
Current assignee: Hefei Energy Saving Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-10-04
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a clamping device, which comprises an extrusion mechanism and a clamping part, wherein the clamping part comprises a fixed clamping plate and a movable clamping plate, one end of the fixed clamping plate is provided with a shaft, and the movable clamping plate is slidably arranged on the shaft; the number of the fixed clamping plates is 1, the number of the movable clamping plates is more than 1, the movable clamping plates are all positioned at the same side of the fixed clamping plates, and elastic pieces are arranged between the fixed clamping plates and the movable clamping plates and between the movable clamping plates and the movable clamping plates; the extrusion mechanism is arranged at one end, far away from the fixed clamping plate, of the movable clamping plate at the outermost end far away from the fixed clamping plate, and the extrusion mechanism enables clamping force to be generated between the fixed clamping plate and the movable clamping plate and between the movable clamping plate and the movable clamping plate through extruding the movable clamping plate. The utility model discloses simple structure, the centre gripping work piece is stable.

Description

Clamping device

Technical Field

The utility model belongs to the mechanical automation field, specifically speaking relates to a press from both sides and get device.

Background

With the development of industrial automation, more and more machines replace manual work, and particularly, in the production and manufacturing process, the work of clamping and conveying workpieces is changed into the clamping and conveying of a machine by manual work. Particularly, in the clamping process of clamping a plurality of workpieces or clamping a thinner workpiece at one time, the problems that the workpiece is easy to fall off or unstable in clamping during the clamping process are more prominent due to the self error of the clamping device and the uneven thickness of the workpiece.

Chinese utility model patent with grant publication number CN 206901286U discloses a clamping jaw for grabbing adobes, which comprises a frame, a cylinder, a fixed clamp plate, a movable clamp plate and a sliding assembly. The cylinder and the fixed clamping plate are respectively fixedly arranged on the frame. The sliding assembly comprises a guide rail and a sliding block sleeved on the guide rail, the guide rail is installed on the rack, the movable clamping plate is installed on the sliding block and fixedly connected with the piston rod of the air cylinder, and the movable clamping plate is further provided with a floating clamping assembly. When snatching, solid fixed splint and movable clamp plate remove the both sides to the brick embryo, and the piston rod of cylinder drives movable clamp plate and presss from both sides the brick embryo of tight bottom, and the clamp of floating simultaneously holds up the subassembly and floats to press from both sides to hold up to upper brick embryo, leaks when preventing to press from both sides the brick to press from both sides and the brick embryo landing. 8230, and a spring is arranged between the movable clamping plate and the clamping and supporting plate and sleeved on the guide short shaft. The spring in the technical scheme provides the pressure necessary for clamping the green bricks by the clamping plate. The technical scheme mainly solves the problem that one clamping jaw clamps a plurality of workpieces simultaneously, and part of the workpieces are unstable when clamped, but the clamping jaw is not suitable for clamping a plurality of workpieces in parallel, and is also not suitable for thin-wall articles such as paperboards, templates and other workpieces. Meanwhile, the technical scheme has the advantages of relatively complex structure and high production and manufacturing cost, and the spring is used as a clamping part, so that the clamping force is easy to reduce after a long time.

Therefore, in order to solve the problems that clamping is unstable and easy to fall off in the clamping process of the workpieces, particularly in the clamping process of the thin-wall workpieces, a clamping device which is simple to manufacture, stable in clamping and suitable for clamping a plurality of workpieces in parallel is still needed.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The clamping device solves the problems that in the prior art, the clamping device is easy to fall off and unstable in clamping in the clamping process of workpieces due to the self error of the clamping device and uneven thickness of the workpieces, and particularly the parallel clamping process of the workpieces is easier to occur. The utility model provides a press from both sides and get device can avoid the work piece to drop and keep the centre gripping stable at the clamp in-process of getting.

2. Technical scheme

In order to solve the problems, the utility model provides a clamping device, which comprises an extrusion mechanism and a clamping part, wherein the clamping part comprises a fixed clamping plate and a movable clamping plate, one end of the fixed clamping plate is provided with a shaft, and the movable clamping plate is slidably arranged on the shaft;

the number of the fixed clamping plates is 1, the number of the movable clamping plates is more than 1, the movable clamping plates are all positioned at the same side of the fixed clamping plates, and elastic parts are arranged between the fixed clamping plates and the movable clamping plates and between the movable clamping plates and can be springs;

the extrusion mechanism is arranged on one side of the movable clamping plate far away from the outermost end of the fixed clamping plate and is positioned on one side of the movable clamping plate far away from the fixed clamping plate, and the extrusion mechanism enables clamping force to be generated between the fixed clamping plate and the movable clamping plate and between the movable clamping plate and the movable clamping plate through extruding the movable clamping plate.

Preferably, epaxial being provided with the piece of dividing equal with spring quantity, the piece of dividing can slide on the axle, divide the piece to set up respectively in reset spring keeps away from the one end of solid fixed splint, movable clamping plate demountable installation is on dividing the piece.

Preferably, the segmentation block is in a hollow cylindrical shape, the segmentation block is sleeved on the shaft, a through hole matched with the segmentation block in diameter is formed in the movable clamping plate, and the movable clamping plate is sleeved on the segmentation block and slides on the shaft along with the segmentation block.

Preferably, the diameter of the return spring is smaller than that of the segment.

Preferably, one end of the movable clamping plate close to the shaft is provided with a notch, and the movable clamping plate is connected with the cutting block through the notch.

Preferably, one end of the shaft, which is far away from the fixed clamping plate, is provided with a mounting plate, and the extrusion mechanism is arranged on the mounting plate.

Preferably, the extrusion mechanism comprises an air cylinder, a piston rod and a top block, the air cylinder is arranged at one end of the mounting plate far away from the shaft, the piston rod penetrates through the mounting plate, and the top block is arranged at one end of the piston rod far away from the air cylinder; the piston rod drives the ejector block to stretch through the cylinder, and the ejector block enables the clamping part to generate clamping force through extruding the movable clamping plate.

Preferably, the number of the shafts is two, and the two shafts are respectively positioned at two sides of one end of the fixed clamping plate.

Preferably, one side or two sides of one end of the fixed clamping plate and one end of the movable clamping plate far away from the shaft are provided with guide angles.

Preferably, the movable clamping plate is provided with a structural hole, and the structural hole is perpendicular to the shaft.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model discloses a set up the spring between solid fixed splint and movable clamp plate, between movable clamp plate and the movable clamp plate, form flexible clamp and get the mode, can make by the more stable of centre gripping work piece centre gripping, prevent that the centre gripping work piece from droing.

(2) The utility model discloses technical scheme through setting up a plurality of movable clamp plates, can press from both sides simultaneously and get many work pieces, and each is added and is held the work piece and can both realize that flexible clamp gets.

(3) The utility model discloses technical scheme cuts apart soon through setting up in the axle, and movable clamp plate can the direct mount on cutting apart the piece, avoids the interference of spring to movable clamp plate installation in the installation, and it is more convenient to install, through set up on movable clamp plate and cut apart a assorted through-hole, makes things convenient for movable clamp plate to install on cutting apart the piece more, further makes things convenient for the installation at preparation or equipment in-process.

(4) According to the further technical scheme of the utility model, the movable clamping plate is provided with the notch which is connected with the cutting block, the movable clamping plate can be directly attached to the cutting block, and the avoided movable clamping plate is sleeved on the shaft or the cutting block, so that the installation is convenient; meanwhile, when the movable clamping plate with the notch goes wrong, the movable clamping plate only needs to be taken down from the segmentation block through the notch, and the movable clamping plate is convenient to disassemble, assemble and replace.

(5) The utility model discloses technical scheme mutually supports through cylinder, piston rod, kicking block, and its simple structure is with low costs, and through setting up two axles, movable clamp plate, solid fixed splint can be avoided in two axles epaxial rotations, can keep the holding workpiece stability during the centre gripping, is provided with a plurality of structure holes on the face on the axial direction of perpendicular to axle through movable clamp plate, has alleviateed movable clamp plate's weight, can save the material that splint used simultaneously.

(6) The utility model discloses a further technical scheme sets up the one side or both sides of the one end of the off-axis of solid fixed splint and activity splint and conveniently presss from both sides the work piece and can be accurate enter into adjacent splint before, then realize pressing from both sides the work of getting.

Drawings

FIG. 1 is a view showing an overall structure of the gripping device of the present invention;

FIG. 2 is a schematic view of the structure of a single movable splint and a fixed splint according to the present invention;

FIG. 3 is a schematic view of the installation positions of the dividing blocks and the springs of the present invention;

fig. 4 is a schematic structural view of the movable clamping plate with a notch of the present invention;

fig. 5 is a schematic view of the extruding mechanism of the present invention;

description of the drawings: 1. an extrusion mechanism; 11. a cylinder; 12. a piston rod; 13. a top block; 2. a clamping part; 21. fixing the clamping plate; 22. a movable splint; 221. a notch; 222. a guide angle; 223. a structural pore; 23. a shaft; 24. an elastic member; 25. dividing the blocks; 3. mounting a plate; 31. a frame transverse plate.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

As shown in fig. 1 and fig. 2, the utility model provides a clamping device, which comprises an extrusion mechanism 1 and a clamping part 2, wherein the clamping part 2 comprises a fixed clamping plate 21 and a movable clamping plate 22. One end of the fixed clamp plate 21 is provided with a shaft 23, the shaft 23 extends along the direction that the fixed clamp plate 21 approaches the pressing mechanism 1, the movable clamp plate 22 is arranged on the shaft 23, and the movable clamp plate 22 can slide on the shaft 23. The number of the movable splints 22 may be 1 or more. When the number of the movable clamping plates 22 is one, the clamping device can only clamp one workpiece, or only a plurality of workpieces can be attached together for clamping simultaneously, when the number of the movable clamping plates 22 is more, the clamping device can provide a plurality of clamping stations, and the plurality of clamping stations can respectively clamp a plurality of workpieces in parallel. An elastic piece 24 is arranged between the movable clamping plate 22 and the fixed clamping plate 21, the elastic piece 24 can be a spring, the elastic piece 24 is sleeved on the shaft 23, and a certain distance is formed between the movable clamping plate 22 and the fixed clamping plate 21 and between the movable clamping plate 22 and the movable clamping plate through the elasticity of the elastic piece 24, and the distance is used for placing a clamped workpiece; the elastic member 24 may also be directly disposed on the movable clamp plate 22, such as welded on the movable clamp plate 22, so as to form an elastic force between the connected clamp plates; it is also possible to provide a through hole in the movable clamp plate 22, and then fix the elastic member 24 in the through hole with one or both ends extending out of the through hole. The pressing mechanism 1 is disposed on the side of the movable clamp plate 22 that is farthest from the fixed clamp plate 21 in the extending direction of the shaft 23, which is far from the fixed clamp plate 21, that is, the pressing mechanism 1 is disposed on the side of the movable clamp plate 22 and is located on the outer side of the movable clamp plate 22 that is farthest from the fixed clamp plate 21. The extrusion mechanism 1 extrudes the movable clamping plate 22 closest to the extrusion mechanism 1, so that clamping force is generated between the movable clamping plate 22 and between the movable clamping plate 22 and the fixed clamping plate 21, namely, clamping force is generated between adjacent clamping plates, and clamping of workpieces to be clamped is realized through the clamping force. Because the elastic parts 24 are stretched out through elasticity in the clamping process between the adjacent clamping plates, the clamping needs to extrude the elastic parts, the clamping belongs to flexible clamping in the clamping process, and the clamping mechanism 1 pressurizes the clamping plates, so that the workpieces can be stably clamped and clamped, and the clamping work of the workpieces is realized.

In this embodiment, the extruding mechanism 1 may be a mechanism composed of an air cylinder 11 and a piston rod 12, wherein the air cylinder 11 controls the extension and retraction of the piston rod 12, the piston rod 12 extrudes the movable clamping plate 22 closest to the piston rod 12 when extending out, when the movable clamping plates 22 are multiple, the movable clamping plate 22 extruded by the piston rod 12 transmits force to the movable clamping plate 22 far away from the piston rod 12, and finally ends when transmitting the force to the fixed clamping plate 21, thereby forming a clamping force between two adjacent clamping plates. When the piston rod 12 is retracted, the adjacent clamping plates are opened for a certain distance by the elastic force of the elastic member 24, and the clamping state is restored. The clamping mechanism in this embodiment may also be a threaded rod, the threaded rod is disposed on a side of the movable clamping plate 22 farthest from the fixed clamping plate 21, the threaded rod changes a distance between the threaded rod and the movable clamping plate 22 through rotation, and after the threaded rod is contacted with the movable clamping plate 22, the threaded rod further rotates to push or extrude the movable clamping plate 22, so as to promote pressure to be generated between adjacent clamping plates, and the principle of the clamping mechanism is the same as that of the combination of the cylinder 11 and the piston rod 12. In order to realize the rotation of the threaded rod, the prior art such as motor driving can be adopted, and the detailed description is omitted in this embodiment.

Furthermore, a top block 13 can be arranged at one end of the piston rod 12 or the threaded rod close to the movable clamping plate 22, and the area of one side of the top block 13, which is opposite to the movable clamping plate 22, is larger than the cross-sectional area of the piston rod 12 or the cross-sectional area of the threaded rod, so that the pressure of the piston rod 12 or the threaded rod on the movable clamping plate 22 can be reduced, and the movable clamping plate 22 is prevented from being damaged due to the fact that the extrusion force of the piston rod 12 or the threaded rod on the movable clamping plate 22 is too large.

As shown in fig. 2 and 3, this embodiment is substantially the same as embodiment 1, and further, the shaft 23 is provided with the same number of divided blocks 25 as the number of the elastic members 24, the divided blocks 25 are sleeved on the shaft 23, and the divided blocks 25 can slide on the shaft 23. The division block 25 is disposed at one end of each elastic member 24 far from the fixed clamp 21, in the embodiment, the movable clamp 22 is mounted on the division block 25, and the movable clamp 22 slides on the shaft 23 through the division block 25 instead of being directly mounted on the shaft 23, which is beneficial for fixing the position of the movable clamp 22 on the shaft 23 during installation. In this embodiment, the movable clamp plate 22 may be sleeved on the dividing block 25, specifically, a through hole parallel to the axial direction of the shaft 23 is provided on the movable clamp plate 22, the dividing block 25 is hollow cylindrical, the hollow portion thereof is sleeved on the shaft 23, the movable clamp plate 22 is sleeved on the dividing block 25 through the through hole provided on the movable clamp plate 22, the diameter of the through hole of the movable clamp plate 22 is matched with the diameter of the outer circle of the cylindrical dividing block 25, preferably, the movable clamp plate is in interference fit, and the movable clamp plate is not easy to rotate when being installed in interference fit. Further, threaded holes may be provided in the dividing block 25 and the movable clamp plate 22, and the positions of both may be further fixed by screws.

Example 2

As shown in fig. 4, in this embodiment, the movable clamp plate 22 may further have a notch 221 at one end close to the shaft 23, the movable clamp plate 22 is attached to the partition block 25 through the notch 221 during installation, and then the relative position between the movable clamp plate 22 and the partition block 25 may be fixed by a screw, a pin, or the like, so that the movable clamp plate 22 does not need to be sleeved on the shaft 23, which facilitates installation and replacement of the movable clamp plate 22, if there are 3 movable clamp plates 22, one movable clamp plate 22 closest to the fixed clamp plate 21 needs to be replaced, the movable clamp plate 22 that needs to be replaced may be directly detached, and the movable clamp plate 22 that needs to be replaced may not be affected by other movable clamp plates 22 during replacement, and is convenient to install, replace, and maintain as a whole.

Example 3

As shown in fig. 2, the present embodiment is substantially the same as the above-described embodiments, except that the thickness of the dividing block 25 in the axial direction of the shaft 23 is smaller than that of the movable clamp 22 in the axial direction of the shaft 23, the diameter of the elastic member 24 is smaller than that of the dividing block 25, or the outer diameter of the elastic member 24 is smaller than that of the dividing block 25, so that the elastic member 24 can be contracted in the gap formed between the movable clamp 22 and the dividing block 25 when the pressing mechanism 1 presses the movable clamp 22, and the distance between the adjacent clamps can be reduced to zero after the elastic member 24 is contracted in the gap, which enables the clamping apparatus of the present embodiment to clamp a thin-walled workpiece, even a workpiece such as paper.

Further, as shown in fig. 1 and 4, in the present embodiment, a mounting plate 3 may be provided at an end of the shaft 23 away from the fixed clamp plate 21, and the mounting plate 3 is used for mounting the pressing mechanism 1. The arrangement is such that the pressing mechanism 1 is formed integrally with the nip 2. The concrete mode can be, if cylinder 11 installs the one end of keeping away from axle 23 in mounting panel 3, piston rod 12 runs through mounting panel 3, and kicking block 13 is located the one end that piston rod 12 is close to movable clamp plate 22, and cylinder 11 drives piston rod 12 and stretches out and draws back, and piston rod 12 drives kicking block 13 and keeps away from or extrudees movable clamp plate 22 to realize pressing from both sides tightly and opening between the two adjacent clamp plates. The integral design is more convenient to install and use, particularly when the clamping device is integrally installed on other mechanism systems, and the integral structure can save space. Further still can set up frame diaphragm 31 between mounting panel 3 and fixed splint 21, this frame diaphragm 31 can strengthen the bulk strength of clamping part 2, is getting the work piece simultaneously and can playing limiting displacement, keeps the top of the work piece of centre gripping to be in same position.

Example 4

As shown in fig. 2, the present embodiment is substantially the same as the above-mentioned embodiments, and further, the number of the shafts 23 in the present embodiment is 2, and the shafts 23 are respectively located at two sides inside the fixed clamp plate 21, the movable clamp plate 22 also has two through holes or two notches 221 correspondingly, and the arrangement of the 2 shafts 23 can prevent the movable clamp plate 22 and the fixed clamp plate 21 from rotating on the shafts 23, so as to ensure the stability of clamping the workpiece.

As shown in fig. 1, in the present embodiment, a guide angle 222 is disposed on one side or both sides of the working ends of the fixed clamp plate 21 and the movable clamp plate 22, the guide angle 222 is in a slope shape, the guide angle 222 can enlarge the distance between two adjacent clamp plates at the guide angle 222, and the slope-shaped guide angle 222 plays a role in guiding the workpiece to be placed in, so as to facilitate the workpiece to be guided between two adjacent clamp plates when the workpiece is clamped.

As shown in fig. 5, in the present embodiment, the structural hole 223 is formed in a surface of the movable clamp plate 22 in the axial direction perpendicular to the shaft 23, the structural hole 223 may be a through hole penetrating through the movable clamp plate 22, or a blind hole, the structural hole 223 can reduce the weight of the movable clamp plate 22 and the whole clamping device and save material cost, and the overall strength of the movable clamp plate 22 is not affected by the design of the hole.

Claims

1. The clamping device comprises an extrusion mechanism (1) and a clamping part (2), and is characterized in that the clamping part (2) comprises a fixed clamping plate (21) and a movable clamping plate (22), one end of the fixed clamping plate (21) is provided with a shaft (23), and the movable clamping plate (22) is slidably mounted on the shaft (23);

the movable clamping plates (22) are all positioned at the same side of the fixed clamping plate (21), and elastic pieces (24) are arranged between the fixed clamping plate (21) and the movable clamping plates (22) and between the movable clamping plates (22);

the extrusion mechanism (1) is arranged on one side of a movable clamping plate (22) far away from the outermost end of the fixed clamping plate (21) and is positioned on one side of the movable clamping plate far away from the fixed clamping plate;

the extrusion mechanism (1) extrudes the movable clamping plate (22) to enable clamping force to be generated between the fixed clamping plate (21) and the movable clamping plate (22) and between the movable clamping plate (22) and the movable clamping plate (22).

2. A gripping device according to claim 1, characterized in that the shaft (23) is provided with a number of segments (25) equal to the number of the elastic members (24), the segments (25) being slidable on the shaft (23), the segments (25) being provided respectively at the ends of the elastic members (24) remote from the fixed jaw (21), the movable jaw (22) being detachably mounted on the segments.

3. The clamping device as claimed in claim 2, characterized in that the dividing block (25) is a hollow cylinder fitted over the shaft (23), the movable clamping plate (22) is provided with a through hole matching with the dividing block (25), and the movable clamping plate (22) is fitted over the dividing block (25) and slides on the shaft (23) together with the dividing block (25).

4. A gripping apparatus according to claim 3, characterised in that the resilient member (24) is a spring having an outer diameter smaller than the outer diameter of the segment (25).

5. A gripping device according to claim 2, characterized in that the movable jaw (22) is provided with a notch (221) at the end close to the shaft (23), and the movable jaw (22) is connected to the segment (25) through the notch (221).

6. A gripping apparatus according to claim 1, characterised in that the end of the shaft (23) remote from the fixed jaw (21) is provided with a mounting plate (3), the squeezing means (1) being attached to the mounting plate (3).

7. The clamping device as claimed in claim 6, wherein the pressing mechanism (1) comprises a cylinder (11), a piston rod (12) and a top block (13), the cylinder (11) is arranged at one end of the mounting plate (3) far away from the shaft (23), the piston rod (12) penetrates through the mounting plate (3), and the top block (13) is arranged at one end of the piston rod (12) far away from the cylinder (11); the cylinder (11) drives the ejector block (13) to stretch and retract through the piston rod (12), and the ejector block (13) enables the clamping part (2) to generate clamping force through extruding the movable clamping plate (22).

8. A gripping device according to any one of claims 1-7, characterised in that the number of shafts (23) is 2, one on each side of the inside of the fixed jaw (21).

9. A gripping apparatus according to any one of claims 1-7, characterized in that the working ends of the fixed jaw (21) and the movable jaw (22) are provided with guide angles (222).

10. A gripping device according to any one of claims 1 to 7, characterized in that the movable jaw (22) is provided with a structural hole (223), the structural hole (223) being perpendicular to the shaft (23).