CN210024538U

CN210024538U - Multi-layer mechanical rapid clamping fixture for flat plate machining

Info

Publication number: CN210024538U
Application number: CN201920900253.2U
Authority: CN
Inventors: 许明武
Original assignee: HUNAN KS MACHINE CO Ltd
Current assignee: HUNAN KS MACHINE CO Ltd
Priority date: 2019-06-16
Filing date: 2019-06-16
Publication date: 2020-02-07
Anticipated expiration: 2029-06-16

Abstract

The utility model discloses a multi-layer mechanical rapid clamping fixture for processing a flat plate, which comprises a mounting frame, a floating support mechanism and a force application mechanism; a plurality of foundation plates are arranged at different height positions of the mounting rack; the one end of lever is power action point position, the other end is the fulcrum position, wherein lie in power action point position department on every lever and install one and give power gyro wheel, on, a plurality of power gyro wheels of giving pass through a dowel steel connection down, lie in fulcrum position end on every lever and install the supporting seat, the supporting seat both ends are all blocked and are established in the guide way of corresponding that two stands of group, lie in on same one side, also connect through a dowel steel between a plurality of supporting seats down, install one through spherical bearing at every stand bottom central point position and be used for compressing tightly the briquetting on frame floating plate with the work piece. The utility model discloses a dowel steel transmits same power for upper and lower multilayer lever to make a plurality of lever motions, realize that disposable multilayer compresses tightly simultaneously, not only improved work efficiency, the packing force on every layer is even moreover, compresses tightly more in place.

Description

Multi-layer mechanical rapid clamping fixture for flat plate machining

Technical Field

The utility model relates to a dull and stereotyped processing is with quick clamping jig of multilayer mechanical type belongs to sewing machine processing technology field.

Background

When a sewing machine flat plate is processed, the sewing machine flat plate needs to be clamped by a clamp. In the prior art, after a flat plate is positioned on a clamp, clamping and loosening of the flat plate are generally realized through a pressing block, the realization modes of the flat plate are mainly hydraulic and mechanical, wherein the hydraulic mode is realized through an oil cylinder in a hydraulic system, a pull rod of the oil cylinder is connected with the pressing block, and when the pull rod of the oil cylinder acts, the pressing block moves along with the oil cylinder, so that clamping and loosening of a workpiece are realized. The hydraulic clamp and the machine tool are specially made for a product processed in batch, an oil way of the hydraulic clamp is placed in a workbench of the machine tool, the clamping point position of the working position of the oil cylinder and the working position of the oil cylinder need to be redesigned and arranged, and the replacement is troublesome; the mechanical type is that the nut is screwed up by a wrench and is screwed with the screw rod, so that the axial movement of the nut relative to the screw rod is realized, the screw rod acts on the pressing block, the screw rod is arranged in the middle of the pressing block, one end of the pressing block is provided with a support, and the other end of the pressing block acts on the flat plate. The defects of the mode are that a spanner is needed for clamping and disassembling, when the clamping points are more, time and labor are consumed, and the working efficiency is low.

Disclosure of Invention

To the not enough of above-mentioned prior art existence, the utility model aims at providing a dull and stereotyped processing is with multilayer mechanical type quick clamping jig.

In order to achieve the above object, the utility model adopts the following technical scheme: a multi-layer mechanical rapid clamping fixture for flat plate processing comprises a mounting frame, a floating support mechanism and a force application mechanism; the floating support mechanism comprises a mounting frame, a plurality of positioning pins, a plurality of floating support mechanisms and a plurality of floating support mechanisms, wherein a plurality of base plates are arranged at different height positions of the mounting frame, two positioning pins are arranged at positions, corresponding to two pin holes in a flat plate, on each base plate, and a limiting cylindrical pin penetrating through the front end and the rear end of the corresponding floating support mechanism is arranged on each base plate; each foundation plate is provided with a floating support mechanism, the floating support mechanism comprises a frame type floating plate, and the frame type floating plate is supported on the corresponding foundation plate through a spring; the force application mechanism comprises a power source, a lever and a pressing block, two groups of four upright posts are arranged on each base plate, the opposite sides of at least one group of two upright posts on each base plate are provided with guide grooves, and the lever is arranged above each frame type floating plate; one end of each lever is a power action point position, the other end of each lever is a fulcrum position, a force supply roller is arranged at the power action point position on each lever, the upper force supply roller and the lower force supply rollers are connected through a force transmission rod, and a return spring is connected between each force supply roller and the corresponding foundation plate; a supporting seat is arranged at the supporting point position end of each lever, the two ends of each supporting seat are clamped in the guide grooves of the corresponding two upright columns of the group, the upper and lower supporting seats positioned on the same side are also connected through a dowel bar, and a return spring is arranged between the bottom of each supporting seat and the corresponding base plate; and a pressing block for pressing the workpiece on the frame type floating plate is arranged at the central point of the bottom of each upright post through a spherical bearing.

Preferably, the supporting seat is of an up-and-down split structure consisting of a base and an upper cover, each lever fulcrum is a cylindrical pin at two sides of the end of each lever, two cylindrical pins of each lever are limited between the base and the upper cover of the corresponding supporting seat, the cylindrical pins rotate relative to the supporting seats, an adjusting nut penetrates through the top of the corresponding upright post and then contacts with the upper cover of the uppermost supporting seat, and the position of the lever fulcrum is adjusted through the adjusting nut.

Preferably, a guide block is mounted above one side of each base plate. Through the effect of guide block, convenient quick clamping.

Preferably, a limit stop is mounted on each base plate and behind the flat plate push-in.

Preferably, the top of the positioning pin is designed with a guiding taper which is convenient for the flat plate pin hole to fall into.

Compared with the prior art, the utility model discloses the beneficial effect who possesses is:

(1) the clamp is designed into a multilayer structure, a plurality of workpieces can be clamped at one time, and the working efficiency is improved;

(2) the same power source is transmitted to the upper and lower layers of levers through the dowel bars, so that the levers move, one-time multi-layer simultaneous compression is realized, the working efficiency is improved, the compression force of each layer is uniform, and the compression is more in place;

(3) the guide block is arranged above one side corresponding to each foundation plate, so that when the workpiece is pushed into the floating support plate, the guide block plays a role in accurate guide, and quick clamping is realized.

Drawings

Figure 1 is a perspective view of the structure of the utility model

FIG. 2 is a right side view of the structure of the present invention

FIG. 3 is a schematic diagram of the related structure corresponding to the position of the leverage action point of the present invention

FIG. 4 is the related schematic structural diagram corresponding to the lever fulcrum position of the present invention

Fig. 5 is the structure diagram of the limit cylindrical pin inserted into the corresponding limit pin hole.

Detailed Description

The invention will now be further elucidated with reference to the drawing.

As shown in fig. 1-5, the multi-layer mechanical rapid clamping fixture for flat plate processing of the present invention comprises a mounting frame 1, a floating support mechanism, and a force application mechanism.

The mounting frame 1 is provided with a plurality of base plates 2 at different height positions through bolts or in a welding mode, two positioning pins 3 are arranged on each base plate 2 at positions corresponding to two pin holes in a flat plate through bolts, and the tops of the positioning pins 3 are provided with guide tapers convenient for the flat plate pin holes to fall into; a floating support mechanism is arranged on each base plate 2 and comprises frame-type floating plates 4, four corners at the bottoms of the frame-type floating plates 4 are supported on the corresponding base plates 2 through springs 5 respectively, one end of each spring 5 is installed at the bottom of each frame-type floating plate 4 through a bolt, the other end of each spring 5 is installed at the corresponding base plate 2 through a bolt, limiting pin holes penetrating through the frame-type floating plates 4 are drilled at the front end and the rear end of each frame-type floating plate 4 respectively, correspondingly, limiting cylindrical pins 13 are installed at the positions, corresponding to the limiting pin holes, on each base plate 2 through bolts, the limiting cylindrical pins 13 penetrate through the corresponding limiting pin holes, and the top of each limiting cylindrical pin 13 is not higher than the upper surface of the frame-type floating plate after the plate is clamped; the existence of the limiting cylindrical pin 13 is to prevent the frame type floating plate 4 from moving along the XY direction;

the force application mechanism comprises a power source 6, a lever 9 and a pressing block 7, two groups of four upright posts 8 are installed on each base plate 2 and close to the left side and the right side through bolts or welding, guide grooves are formed in opposite sides of at least one group of two upright posts 8 (the upright posts corresponding to the support ends of the lever in the figure), the tops of the two upright posts 8 in one group are connected into a whole (namely integrally formed), the tops of the two upright posts in the other group are separated, the power source 6 (namely a cam) is installed on the tops of the two upright posts 8 which are positioned on the base plate 2 at the top and are separated through a rotating shaft, the cam 6 is strung on the rotating shaft without relative movement between the two upright posts, one end of the rotating shaft penetrates through the corresponding upright post 8, the end part of the rotating shaft is limited on the upright post 8 (namely the end part of the end of the rotating shaft is welded or integrally formed with a cylindrical limiting block, and the diameter, the other end of the rotating shaft penetrates through the other upright post of the group and is provided with a handle 14 in a welding mode or a bolt mounting mode, and the end of the rotating shaft and the upright post do relative rotation motion;

a lever 9 is arranged above each frame type floating plate 4, one end of each lever 9 is a power action point position, and the other end of each lever 9 is a fulcrum position. A force supply roller 15 is installed at the position end of the power action point of each lever 9 (namely, a clamping groove is formed at the end of each lever 8, the force supply roller is installed in the clamping groove through a wheel shaft, two ends of the wheel shaft are clamped in the clamping groove, the diameter of the force supply roller 15 is greater than the height of each lever 9), all the force supply rollers 15 are connected through a force transmission rod 11, namely, a wheel seat is installed at the bottom of each force supply roller 15 through a bolt or in a welding mode, all the wheel seats are installed at corresponding positions of the force transmission rod 11 through bolts or in a welding mode, the force transmission rod 11 penetrates through the corresponding foundation plate 2 and can move up and down relative to the foundation plate 2, a return spring 12 is connected between the wheel seat of each force supply roller 15 and the corresponding foundation plate 2 (the return spring is installed on a corresponding component through a screw), and the return spring is sleeved outside the force transmission rod 11;

a fulcrum position adjusting mechanism is arranged at the fulcrum position end of each lever 9, each lever 9 fulcrum is a cylindrical pin at two sides of the end part of the lever 9, each fulcrum position adjusting mechanism comprises a supporting seat 10 which is composed of a base and an upper cover and has an upper and a lower split type structure, the fulcrum of the lever 9 penetrates between the base and the upper cover, the fulcrum of the lever is locked on the supporting seat 10 through a bolt penetrating through the base and the upper cover, the fulcrum of the lever 9 relatively rotates relative to the corresponding supporting seat 10, two ends of the supporting seat 10 are arranged on each foundation plate 2 and are connected into a whole with the corresponding top in the guide grooves of the two upright posts 8, a return spring 12 is also connected between the bottom of each supporting seat 10 and the corresponding foundation plate 2 (the return spring is arranged on the corresponding part through a screw), the upper and the lower supporting seats 10 are connected through another force transmission rod 11, the return spring 12 is sleeved outside the other force transmission rod 11, the connecting mode of the dowel bar and the corresponding parts is the same as that of the dowel bar. The top parts of the upright posts are connected into a whole, the middle of the top part of the uppermost upright post group is provided with a threaded hole, an adjusting nut 18 and the threaded hole are screwed to penetrate through the top part of the corresponding upright post and are contacted with the upper cover of the supporting seat 10 at the end part of the uppermost lever 9, and the fulcrum position of the lever 9 is adjusted through the adjusting nut 18;

a pressing block 7 for pressing the flat plate on the frame type floating plate 4 is fixed at the central point of the bottom of each lever 9 through a spherical bearing.

A guide block 16 is mounted on the column 8 above one side of each base plate 2 by welding or bolting. And the guide block 16 is used for facilitating and quickly clamping.

A limit stop 17 is mounted on each base plate 2 and behind the flat plate push-in by bolts. When pushing into the flat board, carry on spacingly through limit stop 17 to the degree that the flat board pushed into, more can guarantee that locating pin 3 on the foundatin plate can accurately insert in the pinhole on the flat board.

During the use, one or more dull and stereotyped one side that will treat processing is pushed into corresponding frame floating plate 4 along guide block 16 on, push the back of targetting in place (install limit stop at the rear end that every foundatin plate pushed, it is spacing through limit stop 17), through pulling handle 14, cam 6 rotates and gives power transmission for power gyro wheel 15, give power gyro wheel 15 and give the power point position of power transmission for the topmost lever 9, make this tip downstream of lever 9, under the effect of lever force, briquetting 7 compresses tightly the flat board downwards, two pinhole on the flat board correspond in inserting two locating pins on the foundatin plate, realize location and compress tightly, meanwhile, two spacing cylindric lock 13 on the foundatin plate also pass frame floating plate and restriction frame floating plate rocks. In the process of pressing down, the lower lever 9 on the same side is driven to press down through the dowel bar 11, the corresponding pressing block also presses down the corresponding flat plate, and under the action of the dowel bar, the multi-layer flat plates placed up and down are finally pressed and positioned. When the flat plate needs to be taken down, the handle is pulled reversely, the pressure of the cam on the force applying roller 15 is released, the press block is far away from the flat plate under the action of the return spring, the floating plate floats upwards to support the flat plate upwards, the pin hole of the flat plate is far away from the positioning pin, and the flat plate is pulled back to be taken down.

Claims

1. A multi-layer mechanical rapid clamping fixture for flat plate processing comprises a mounting frame, a floating support mechanism and a force application mechanism; the floating support mechanism is characterized in that a plurality of base plates are arranged at different height positions of the mounting frame, two positioning pins are arranged at positions, corresponding to two pin holes in the flat plate, on each base plate, and a limiting cylindrical pin penetrating through the front end and the rear end of the corresponding floating support mechanism is arranged on each base plate; each foundation plate is provided with a floating support mechanism, the floating support mechanism comprises a frame type floating plate, and the frame type floating plate is supported on the corresponding foundation plate through a spring; the force application mechanism comprises a power source, a lever and a pressing block, two groups of four upright posts are arranged on each base plate, the opposite sides of at least one group of two upright posts on each base plate are provided with guide grooves, and the lever is arranged above each frame type floating plate; one end of each lever is a power action point position, the other end of each lever is a fulcrum position, a force supply roller is arranged at the power action point position on each lever, the upper force supply roller and the lower force supply rollers are connected through a force transmission rod, and a return spring is connected between each force supply roller and the corresponding foundation plate; a supporting seat is arranged at the supporting point position end of each lever, the two ends of each supporting seat are clamped in the guide grooves of the corresponding two upright columns of the group, the upper and lower supporting seats positioned on the same side are also connected through a dowel bar, and a return spring is also arranged between the bottom of each supporting seat and the corresponding base plate; and a pressing block for pressing the workpiece on the frame type floating plate is arranged at the central point of the bottom of each upright post through a spherical bearing.

2. The multi-layer mechanical rapid clamping fixture for flat plate processing according to claim 1, wherein the supporting seat is a split-type structure composed of a base and an upper cover, each lever fulcrum is a cylindrical pin at both sides of the lever end, two cylindrical pins of each lever are limited between the base and the upper cover of the corresponding supporting seat and rotate relative to the supporting seat, an adjusting nut passes through the top of the corresponding upright post and then contacts with the upper cover of the supporting seat at the top, and the position of the lever fulcrum is adjusted by the adjusting nut.

3. The multi-layer mechanical rapid clamping jig for flat plate processing according to claim 1 or 2, wherein a guide block is installed above one side of each of the base plates.

4. The multi-layer mechanical rapid clamping jig for flat plate processing according to claim 3, wherein a limit stopper is installed on each base plate at the rear of the flat plate pushing-in.

5. The multi-layer mechanical rapid clamping fixture for flat plate processing according to claim 4, wherein the top of the positioning pin is designed with a guiding taper for facilitating the falling of the flat plate pin hole.