CN214979434U

CN214979434U - Crank slider positioning and clamping device

Info

Publication number: CN214979434U
Application number: CN202121588216.6U
Authority: CN
Inventors: 许习军; 郭学深; 惠茂盛
Original assignee: Jinzhong Fulai Ruida Logistics Equipment Co ltd
Current assignee: Jinzhong Fulai Ruida Logistics Equipment Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-12-03
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses a crank slider positioning and clamping device, which relates to workpiece processing and specifically comprises a frame structure, a positioning device, a clamping device and a locking device; the positioning device is fixedly connected with the frame structure; a clamping device is arranged opposite to the positioning device, the clamping device comprises a crank block clamping mechanism and a clamping plate connected to the front end of the crank block clamping mechanism, and the clamping plate can move back and forth relative to the positioning device under the driving of the crank block clamping mechanism; the locking device comprises two locking pressing blocks, the two locking pressing blocks are respectively arranged at the rear end and the side part of the crank block clamping mechanism, the locking pressing blocks are connected with fixing pieces, and the locking pressing blocks limit the crank block clamping mechanism through the fixing pieces; the utility model is suitable for an yielding and to the higher shaping part of surface requirement, solve the vice pincers clamping force and easily cause the clamp to hinder to this type of part greatly to and the difficult problem of removing the dismantlement of vice.

Description

Crank slider positioning and clamping device

Technical Field

The utility model relates to a clamping device especially relates to a crank block positioning and clamping device.

Background

In the machining industry, clamps are indispensable. For the clamp, the positioning and clamping conditions of the workpiece must be met, and the phenomenon that the workpiece cannot be displaced in the machining process is ensured.

Common clamps in daily production include bench vices, three-jaw self-centering and four-jaw chucks, faceplates, and the like. The bench vice adopts a screw left-right screw transmission structure to control the opening and closing of the jaw and clamp a workpiece. The clamping force of the bench vice is often larger, the workpiece is easy to be damaged, and the bench vice is more suitable for clamping blank pieces, raw materials and parts with low surface requirements. For molded parts with higher surface requirements or parts easy to deform, copper sheets, aluminum sheets and the like must be padded on a jaw to ensure the integrity of the workpiece as much as possible. And the vice is heavy, and the equipment working table is very inconvenient to move, disassemble and assemble.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a crank block positioning and clamping device, is applicable to yielding and to the higher shaping part of surface requirement, solves the vice pincers clamping force and easily causes the clamp to hinder to this type of part greatly to and the difficult problem of removing the dismantlement of vice.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

A crank slide block positioning and clamping device comprises a frame structure, a positioning device, a clamping device and a locking device; the positioning device is fixedly connected with the frame structure; a clamping device is arranged opposite to the positioning device, the clamping device comprises a crank block clamping mechanism and a clamping plate connected to the front end of the crank block clamping mechanism, and the clamping plate can move back and forth relative to the positioning device under the driving of the crank block clamping mechanism; the locking device comprises two locking pressing blocks, the two locking pressing blocks are respectively arranged at the rear end and the side part of the crank block clamping mechanism, the locking pressing blocks are connected with a fixing piece, and the locking pressing blocks limit the crank block clamping mechanism through the fixing piece.

Furthermore, the crank block clamping mechanism comprises a first hinged connecting rod and a second hinged connecting rod which are hinged with each other, and the first hinged connecting rod and the second hinged connecting rod are both formed by hinging two connecting rods.

Furthermore, one end of the first hinged connecting rod is fixedly connected with the clamping plate, and the other end of the first hinged connecting rod is hinged with the frame structure through a first fixing column; one end of the second hinged connecting rod is hinged to a hinged point of the first hinged connecting rod, and the other end of the second hinged connecting rod is hinged to the frame structure through a second fixing column.

Furthermore, a hinged point of the second hinged connecting rod is provided with a clamping rocker arm.

Furthermore, the frame structure comprises a bolt fixing support and a magnetic adsorption fixing seat, and the first fixing column and the second fixing column are respectively and fixedly connected to the magnetic adsorption fixing seat.

Furthermore, the frame structure further comprises a shell, the shell is arranged outside the clamping device, a hollowed arc-shaped track is arranged on the shell, and the hand-cranking end of the clamping rocker arm penetrates through the arc-shaped track to be located outside the clamping rocker arm.

Furthermore, positioner includes location splint and the location bottom plate of being connected with the location splint, location splint and the relative parallel arrangement of splint.

Further, the fixing piece is a locking bolt or a compression spring.

Furthermore, the surface of the clamping plate is provided with a plastic spraying layer or a nylon material.

The utility model discloses produced beneficial effect for prior art does:

the utility model discloses a slider-crank mechanism combines splint to fix a position and presss from both sides tightly, and the clamp force is less, is difficult for pressing from both sides the work piece that hinders and makes the work piece warp, simple structure compactness. Can use traditional bolt fixing support, also can adopt magnetic base to adsorb, magnetic base can dismantle, can adapt to the installation in more place fixed, easily removes the loading and unloading. The utility model discloses can compensate the weak point of above-mentioned bench vice, the finished product still can keep intact state after the centre gripping.

Drawings

Fig. 1 is the schematic structural diagram of the slider-crank positioning and clamping device of the present invention.

Fig. 2 is a plan view of the clamping device in a fully closed state.

Fig. 3 is a plan view of a state where the clamping plate of the clamping device starts to move forward.

Fig. 4 is a plan view of the state in which the clamping plate of the clamping device continues to move forward.

Fig. 5 is a schematic structural view of the state in which the clamping plate of the clamping device is continuously moved forward.

Fig. 6 is a schematic structural diagram of a bolt fixing support and a magnetic force adsorption fixing seat in the clamping device.

In the figure, 1 is a frame structure; 2 is a positioning device; 3 is a clamping device; 4 is a locking device, and 5 is a workpiece;

11 is a magnetic adsorption fixed seat, 12 is a bolt fixed support, and 13 is an arc-shaped track;

21 is a positioning clamping plate, and 22 is a positioning bottom plate;

31 is a crank block clamping mechanism, 32 is a clamping plate, 33 is a clamping rocker arm, 311 is a first hinged connecting rod, 312 is a second hinged connecting rod, 313 is a first fixed column, and 314 is a second fixed column;

41 is a locking pressing block, and 42 is a locking bolt.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in fig. 1-5, the crank block positioning and clamping device mainly comprises four parts, namely a frame structure 1, a positioning device 2, a clamping device 3 and a locking device 4; the frame structure 1 is a box body with an opening at the front end, and the box body is composed of a magnetic adsorption fixed seat 11 connected to a bottom plate, bolt fixed supports 12 (shown in figure 6) at two sides, and a shell at the top; the shell is used for installing the internal elements of the clamp and the fixed support. The magnetic force adsorption fixed seat 11 and the bolt fixed support 12 are used for fixing the clamp body on a working place or a working table, and the magnetic force seat can be detached when not in use.

The positioning device 2 comprises a positioning clamping plate 21 and a positioning bottom plate 22, and the positioning bottom plate 22 extends out along the bottom plate of the frame structure 1 and is connected with the bottom plate of the frame structure 1; the welding type movable support can be used as a support plane and has certain flatness requirements, and when a workpiece is fastened, the surface of the workpiece can be attached to position the workpiece. The bottom of the positioning clamping plate 21 is welded with the positioning bottom plate 22, the side part is welded with the bolt fixing support 12 and keeps still, the surface can be sprayed with plastic, or the surface can be made of nylon materials, copper and the like, and the surface has grains.

The clamping device 3 comprises a crank block clamping mechanism 31 and a clamping plate 32 connected to the front end of the crank block clamping mechanism 31, and the clamping plate 32 can move back and forth relative to the positioning clamping plate 21 under the driving of the crank block clamping mechanism 31; the positioning clamp plate 21 is arranged in parallel with respect to the clamp plate 32. The surface of the clamping plate 32 is provided with a plastic-sprayed layer or a nylon material.

The crank block clamping mechanism 31 comprises a first hinged connecting rod 311 and a second hinged connecting rod 312 which are hinged, wherein the first hinged connecting rod 311 and the second hinged connecting rod 312 are both formed by hinging two connecting rods to form a four-bar mechanism. One end of the first hinge connecting rod 311 is fixedly connected with the clamping plate 32, and the other end is hinged with the bottom plate of the frame structure 1 through a first fixing column 313; one end of the second hinge connecting rod 312 is hinged to the hinge point of the first hinge connecting rod 311, the other end is hinged to the bottom plate of the frame structure 1 through the second fixing column 314, and the first fixing column 313 and the second fixing column 314 are respectively and fixedly connected to the magnetic force absorption fixing seat 11. A clamping rocker arm 33 is provided at the hinge point of the second hinge link 312. The slider-crank clamping mechanism 31 is located the shell, is provided with the arc track 13 of fretwork on the shell, and the hand end that presss from both sides tight rocking arm 33 passes arc track 13 and is located its outside. When the clamping rocker arm 33 rotates along the arc-shaped track 13, the clamping plate 32 performs a clamping function along with the linear motion of the slide block. The hand crank arm is connected in crank joint department, and control crank rotates, lets the quick work piece that contacts of pinch-off blades.

The locking device 4 comprises two locking pressing blocks 41, the two locking pressing blocks 41 are respectively arranged at the rear end and the side part of the slider-crank clamping mechanism 31, the locking pressing blocks 41 are connected with locking bolts 42, and the locking pressing blocks 41 limit the slider-crank clamping mechanism 31 through the locking bolts 42. After the clamp clamps the workpiece, the bolt pushes the locking pressing block 41, and the crank mechanism is pressed to be kept still until the clamping and locking are completed. The locking pressing block can be pushed by a spring, and the pushing force can be adjusted by a nut.

The specific working principle is as follows: the principle is similar to that of an internal combustion engine, and a crank-slider mechanism is adopted. The utility model discloses a rotary motion is done to the crank, and reciprocating linear motion is done to the slider, realizes the function of centre gripping and loosening.

The utility model discloses can use two kinds of connected modes of bolt fixing support or magnetic force fixing base, will press from both sides the body fastening on workstation or equipment.

The workpiece is placed on a workbench of the fixture, and the workbench is provided with a positioning clamping plate and a supporting bottom plate which are in right angles. The positioning clamping plate and the clamping plate clamp a workpiece, the bottom plate ensures certain flatness requirements, and the workpiece can be positioned by being attached to a plane by taking the plane of the bottom plate as a reference when being clamped and then clamped. The hand rocker arm is connected on the crank connecting joint of the crank slider mechanism, the crank rotates along with the rotation of the hand rocker arm, and the slider connected with the connecting rod makes reciprocating linear motion to realize the opening and closing of the clamping plate. When the clamping plate contacts with a workpiece, the locking block can be pushed by rotating the bolt, and the four-bar mechanism is pressed by the locking block, so that the function of clamping the workpiece is realized.

The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims

1. A crank slide block positioning and clamping device is characterized by comprising a frame structure (1), a positioning device (2), a clamping device (3) and a locking device (4); the positioning device (2) is fixedly connected with the frame structure (1); the clamping device (3) is arranged opposite to the positioning device (2), the clamping device (3) comprises a crank block clamping mechanism (31) and a clamping plate (32) connected to the front end of the crank block clamping mechanism (31), and the clamping plate (32) can move back and forth relative to the positioning device (2) under the driving of the crank block clamping mechanism (31); the locking device (4) comprises two locking pressing blocks (41), the two locking pressing blocks (41) are respectively arranged at the rear end and the side part of the crank block clamping mechanism (31), the locking pressing blocks (41) are connected with a fixing piece, and the locking pressing blocks (41) are limited to the crank block clamping mechanism (31) through the fixing piece.

2. A crank block positioning and clamping device according to claim 1, characterized in that the crank block clamping mechanism (31) comprises a first hinged connecting rod (311) and a second hinged connecting rod (312) which are hinged to each other, and the first hinged connecting rod (311) and the second hinged connecting rod (312) are both formed by two connecting rods which are hinged to each other.

3. A crank block positioning and clamping device according to claim 2, characterized in that one end of the first hinged connecting rod (311) is fixedly connected with the clamping plate (32), and the other end is hinged with the frame structure (1) through a first fixing column (313); one end of the second hinged connecting rod (312) is hinged to the hinged point of the first hinged connecting rod (311), and the other end of the second hinged connecting rod is hinged to the frame structure (1) through a second fixing column (314).

4. A crank block positioning and clamping device according to claim 3, characterized in that the second articulated connecting rod (312) is provided with a clamping rocker (33) at its articulation point.

5. A crank block positioning and clamping device according to claim 4, characterized in that the frame structure (1) comprises a bolt fixing support (12) and a magnetic adsorption fixing seat (11), and the first fixing column (313) and the second fixing column (314) are respectively fixedly connected to the magnetic adsorption fixing seat (11).

6. A crank block positioning and clamping device according to claim 5, characterized in that the frame structure (1) further comprises a housing, the housing is arranged outside the clamping device (3), a hollowed arc-shaped rail (13) is arranged on the housing, and the hand-cranking end of the clamping rocker (33) passes through the arc-shaped rail (13) and is located outside the clamping device.

7. A crank block positioning and clamping device according to claim 1, characterized in that the positioning device (2) comprises a positioning clamping plate (21) and a positioning base plate (22) connected to the positioning clamping plate (21), the positioning clamping plate (21) and the clamping plate (32) being arranged relatively in parallel.

8. A crank block positioning and clamping device according to claim 1, characterized in that the fixing piece is a locking bolt (42) or a compression spring.

9. A crank block positioning and clamping device according to claim 1, characterized in that the clamping plate (32) is provided with a plastic-sprayed layer or nylon material on its surface.