CN113798390A

CN113798390A - Positioning and punching device for metal plate machining

Info

Publication number: CN113798390A
Application number: CN202111054785.7A
Authority: CN
Inventors: 曹克燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2021-12-17

Abstract

The invention discloses a positioning and punching device for metal plate machining, and relates to the technical field of metal plate machining. The invention comprises an operation table, a movable frame and a punching mechanism, wherein the whole operation table is arranged in an L shape, two L-shaped support frames are symmetrically arranged on two sides of the front end of the operation table, two ends of each L-shaped support frame are respectively and fixedly connected to two vertical side surfaces of the operation table, the movable frame is arranged on the top surface of each L-shaped support frame in a sliding fit manner, and the punching mechanism is arranged on the movable frame in a movable fit manner; the punching mechanism comprises a rotating disc, a fixed disc and a first hydraulic cylinder, and one end of the first hydraulic cylinder is fixedly connected to the top of the side face of the fixed disc. According to the invention, through the arrangement of the rectangular clamping block, the middle positioning groove, the positioning block, the first motor, the cylinder, the cylindrical sleeve, the top plate and the electric magnetic strip and the matching among the components, the device can realize the automatic quick replacement of the punch when in use, the stability of the punch after replacement is high, and the device can also effectively improve the punching quality of the metal plate.

Description

Positioning and punching device for metal plate machining

Technical Field

The invention belongs to the technical field of metal plate processing, and particularly relates to a positioning punching device for metal plate processing, which is mainly used for punching in metal plate processing.

Background

In the processing and production process of the metal plate, the punching operation is often used for punching the metal plate, external force is applied to the plate, the strip, the pipe, the section bar and the like by a press machine and a die to cause the plate, the strip, the pipe, the section bar and the like to generate plastic deformation or separation, so that the forming and processing method of the workpiece (stamping part) with the required shape and size is obtained, the punching device at the present stage is complex and various, has complete functions and high automation degree, and provides convenience for punching the plate, but the existing punching device still has the following defects in the use process:

1. when the existing punching device punches a plate, holes with different specifications are often required to be formed in the surface of the plate, and different punches are required to punch the plate at the time, the traditional method adopts a production line to punch the plate, so that the operation needs to repeatedly position the metal plate, and the operation is troublesome, and the punching accuracy is influenced;

the prior publication, CN110802161A, a steel plate punching device with automatic punch replacement, discloses a mounting table and a housing. In the invention, the rotating shaft, the rotating disc, the sleeve and the ejector rod are adopted, when the punch needs to be replaced, the servo motor drives the driving gear to rotate for a certain number of turns, the driving gear drives the driven gear to rotate for a certain number of turns, the driven gear drives the rotating shaft to rotate for a certain number of turns, thereby moving the sleeve with different punches to the position under the ejector rod, the cylinder contracts to drive the top plate to rapidly move downwards so as to drive the ejector rod to rapidly move downwards, thereby driving the push head to push the slide block to move downwards, the slide block moves downwards to drive the guide rod to contract, the punch rod drives the punch head to punch holes on the steel plate, a worker controls the rotation angle of the servo motor through the PLC controller, the sleeve barrel which carries different punches can be converted to rotate to the position right below the push head during working, the punches can be automatically converted, punching operation is completed, the automation degree is high, the use is convenient, and the punching efficiency is greatly improved;

according to the technical means, although the punch can be automatically replaced, the replacement of the punch is realized through the matching of gears, the automatic replacement operation of the punch is troublesome in such operation, the matching between the gears needs to be accurately calculated, otherwise, the problem of inaccurate positioning of the punch can occur, in addition, the reset of the punch in the technical means is mainly realized by a spring, after long-time use, the spring can generate deformation fatigue, the punch is difficult to accurately restore to the original position, and at the moment, in the process of moving and punching the metal plate, the scraping of individual punches on the metal plate can occur, so that the loss is caused to the punch;

2. when punching a hole in a metal plate, in order to realize the separation of waste and the metal plate after punching, a certain distance is reserved between the bottom surfaces of the metal plate and an operating platform, and when the punching device is arranged facing to a thin metal plate, the metal plate is greatly deformed due to the downward pressing of a punch, and the unevenness of the inner side of the hole punched by the metal plate is caused due to the deformation, so that the punching quality of the metal plate is influenced.

Disclosure of Invention

The invention aims to provide a positioning and punching device for processing a metal plate, which can quickly and conveniently replace a punch, has high positioning stability of the punch and good punching effect of the metal plate, and solves the problems that the existing metal plate punching device cannot realize quick replacement of the punch and has poor positioning stability and the existing metal plate punching device has poor punching effect of the metal plate when punching thin metal.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a positioning and punching device for processing a metal plate, which comprises an operation table, a movable frame and a punching mechanism, wherein the whole operation table is arranged in an L shape, two L-shaped support frames are symmetrically arranged on two sides of the front end of the operation table, two ends of each L-shaped support frame are respectively and fixedly connected to two vertical side surfaces of the operation table, the movable frame is arranged on the top surface of each L-shaped support frame in a sliding fit manner, and the punching mechanism is arranged on the movable frame in a movable fit manner;

the punching mechanism comprises a rotating disc, a fixed disc and a first hydraulic cylinder, one end of the first hydraulic cylinder is fixedly connected to the top of the side face of the fixed disc, the other end of the first hydraulic cylinder is fixedly connected to the bottom face of a convex block, and first limiting blocks are symmetrically arranged on the two side faces of the lower end of the convex block;

the rotating disc is coaxially arranged on one side of the fixed disc, the center of one side face of the rotating disc is fixedly connected with an air cylinder, a fixed section of the air cylinder is fixedly sleeved in the cylindrical sleeve, and the cylindrical sleeve is slidably sleeved in the fixed disc;

one end, far away from the rotating disc, of the cylindrical sleeve penetrates through the fixed disc and is fixedly connected with the fixed plate through a fixed bolt, the middle position of the other side face of the fixed plate is fixedly connected with one end of an output shaft of a first motor, and the first motor is fixedly connected to one outer side face of the fixed disc;

mounting columns are uniformly distributed on the outer side surface of the rotating disc along the circumferential direction, a rectangular mounting groove is formed in the inner side of the other end surface of each mounting column, and the rectangular mounting groove is used for sliding and sleeving of a rectangular inserting column on one end of the punch;

a rectangular fixture block is fixedly sleeved on the mounting column at one side of the rectangular mounting groove, which is close to the rotating disc;

a plurality of positioning blocks are uniformly distributed on one side surface of the fixed disc outside the rotating disc along the circumferential direction, middle positioning grooves are radially arranged in the positioning blocks, and the middle positioning grooves are used for limiting and clamping rectangular clamping blocks;

the inner side of the moving frame is provided with a convex through groove along the horizontal direction, two sides of the lower end position of the convex through groove are symmetrically provided with first sliding grooves, the convex through groove is used for sliding and sleeving of a convex block, and meanwhile, the first sliding grooves are used for limiting and clamping of a first limiting block;

a screw rod is spirally sleeved in a convex block on the moving frame and is rotatably connected to the moving frame through a rolling bearing, one end of the moving frame is embedded in a second motor, and the second motor is fixedly connected to the side face of one end of the moving frame;

the middle part of one side surface of the moving frame, which is close to the vertical plate of the operating platform, is fixedly connected with a second hydraulic cylinder, and the fixed section of the second hydraulic cylinder is fixedly sleeved in the vertical plate of the operating platform;

a plurality of rectangular through grooves are arranged on a bottom plate of the operating platform in parallel, the rectangular through grooves are arranged in parallel with ejector rods of the L-shaped support frame, a top plate is sleeved in the rectangular through grooves in a sliding mode, and meanwhile, an installation plate is fixedly connected to the bottom surface of the operating platform below the rectangular through grooves;

the top plate is composed of a hard plate at the upper end and a permanent magnet plate at the lower end, and the hard plate and the permanent magnet plate are bonded and fixed;

the top surface middle part position of mounting panel is provided with the electric magnetic stripe, all be provided with first internal thread hole on four turnings of mounting panel in the electric magnetic stripe outside, the upper end sliding sleeve of electric magnetic stripe closes in the logical groove of rectangle, first internal thread hole is fixed through the bottom surface cooperation of fixing bolt and operation panel.

Further, be provided with second internal thread hole on the erection column of rectangle mounting groove middle part one side, screw fit has locking bolt in the second internal thread hole, locking bolt's one end and the side contact of post are inserted to the rectangle.

Furthermore, a T-shaped sliding ring is arranged in the middle of the outer side face of the cylindrical sleeve along the circumferential direction, a T-shaped limiting groove is arranged on the inner side face of the fixed disc outside the T-shaped sliding ring along the circumferential direction, and the T-shaped limiting groove is used for limiting and clamping the T-shaped sliding ring.

Furthermore, a second sliding groove is formed in the top surface of the L-shaped supporting frame; and second limiting blocks are symmetrically arranged on two sides of the bottom surface of the moving frame and used for limiting and clamping the second sliding grooves.

Furthermore, C-shaped positioning frames are symmetrically arranged on the top surfaces of the bottom plates of the operation platforms on two sides of the top plates, and the C-shaped positioning frames and the top plates are arranged in parallel.

Furthermore, a pressing plate is arranged in an open slot of the C-shaped positioning frame, a third hydraulic cylinder is fixedly connected to the middle of the top surface of the pressing plate, and a fixing section of the third hydraulic cylinder is fixedly sleeved on the C-shaped positioning frame.

Furthermore, a fourth hydraulic cylinder is arranged in the middle of the other outer side face of the C-shaped positioning frame, which is provided with an open slot, and a fixing section of the fourth hydraulic cylinder is fixedly connected to the top face of the bottom plate of the operating platform.

Further, fixed mounting has the PLC controller on the bottom surface bracing piece of operation panel, the PLC controller passes through the conducting wire respectively in first pneumatic cylinder, first motor, second pneumatic cylinder, electric magnetic stripe, third pneumatic cylinder and fourth pneumatic cylinder electric connection.

The invention has the following beneficial effects:

1. according to the punch pin fixing device, the cylinder is arranged, before the punch pin is replaced, the rectangular clamping block is separated from the middle-shaped positioning groove through the extension of the cylinder, at the moment, the rotating disc can rotate by a corresponding angle through the control of the first motor, so that the plurality of punch pins outside the rotating disc can be replaced, the replacement of the punch pins is quicker and more convenient, after the punch pin is replaced, the cylinder contracts again, the rectangular clamping block is limited and clamped in the middle-shaped positioning groove, the punch pin is limited and fixed in use through the matched arrangement between the rectangular clamping block and the middle-shaped positioning groove, the punch pin is high in stability through the arrangement, and the punch pin which is not required to be used is well protected.

2. According to the punching device, the top plate can be supported from the bottom surface of the metal plate, when the punch punches a hole at a certain position of the metal plate, the PLC can control the electric magnetic strip on the mounting plate in the region to be electrified, under the condition that the electric magnetic strip is electrified, two side surfaces of the electric magnetic strip close to the permanent magnetic plate are in the same magnetism, under the action of like-polarity repulsion, the hard board can be tightly abutted against the bottom surface of the metal plate at the position to be punched, and the punching precision is effectively improved by reducing the distance of metal deformation, so that the punching quality of the metal plate is greatly improved.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a positioning and punching apparatus for processing a metal plate according to an embodiment;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic view showing the overall structure of the movable frame and the punching mechanism connecting body;

FIG. 4 is a cross-sectional view of the mobile gantry;

FIG. 5 is a schematic view showing the overall structure of the punching mechanism;

FIG. 6 is a left side view of FIG. 5;

FIG. 7 is an exploded view of the punching mechanism;

FIG. 8 is a left side view of FIG. 7;

FIG. 9 is an enlarged view taken at A in FIG. 7;

FIG. 10 is a cross-sectional view of the top plate;

fig. 11 is a schematic view of the overall structure of the mounting plate.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an operation table; 2. a movable frame; 3. a punching mechanism; 4. an L-shaped support frame; 5. mounting a plate; 6. a top plate; 7. a PLC controller; 8. a C-shaped positioning frame; 201. a second hydraulic cylinder; 202. a screw shaft; 203. a second motor; 204. a second limiting block; 205. a convex through slot; 206. a first sliding groove; 301. a first hydraulic cylinder; 302. rotating the disc; 303. fixing the disc; 304. a convex block; 305. a punch; 306. a first motor; 307. a cylindrical sleeve; 401. a second sliding groove; 501. an electric magnetic strip; 502. a first internally threaded bore; 601. a hard plate; 602. a permanent magnet plate; 801. pressing a plate; 802. a third hydraulic cylinder; 803. a fourth hydraulic cylinder; 3021. mounting a column; 3022. a rectangular fixture block; 3023. a cylinder; 3024. a rectangular mounting groove; 3025. a second internally threaded bore; 3026. locking the bolt; 3031. positioning blocks; 3032. a middle positioning groove; 3033. a T-shaped limiting groove; 3041. a first stopper; 3051. rectangular inserting columns; 3061. a fixing plate; 3071. t-shaped slip rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open", "one side", "lower", "height", "in the annular direction", "concentrically arranged", "alternately connected", "inner", "peripheral side", "outer", and the like, indicate orientations or positional relationships and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Example one

Referring to fig. 1-2, the present invention is a positioning and punching apparatus for processing metal plate, including an operation table 1, a movable frame 2 and a punching mechanism 3, as can be seen from the attached drawings, the above components constitute the basic structure of the apparatus, the operation table 1 is arranged in an L shape as a whole, two L-shaped support frames 4 are symmetrically arranged on two sides of the front end of the operation table 1, two ends of the L-shaped support frames 4 are respectively and fixedly connected to two vertical side surfaces of the operation table 1, a second sliding groove 401 is arranged on the top surface of the L-shaped support frame 4, the movable frame 2 is arranged on the top surface of the L-shaped support frame 4 in a sliding fit manner, and the punching mechanism 3 is arranged on the movable frame 2 in a moving fit manner.

As shown in fig. 5-9, the punching mechanism 3 includes a rotating disc 302, a fixed disc 303 and a first hydraulic cylinder 301, one end of the first hydraulic cylinder 301 is fixedly connected to the top of the side surface of the fixed disc 303, the other end of the first hydraulic cylinder 301 is fixedly connected to the bottom surface of the convex block 304, first limit blocks 3041 are symmetrically arranged on the two side surfaces of the lower end of the convex block 304, and the first hydraulic cylinder 301 can drive the punch 305 to move up and down under the telescopic action to punch the metal plate;

the rotating disc 302 is coaxially arranged on one side of the fixed disc 303, the center of one side surface of the rotating disc 302 is fixedly connected with an air cylinder 3023, the fixed section of the air cylinder 3023 is fixedly sleeved in the cylindrical sleeve 307, the cylindrical sleeve 307 is slidably sleeved in the fixed disc 303, and the arrangement of the air cylinder 3023 can realize the movement adjustment of the rotating disc 302 in the horizontal direction under the telescopic action;

the end, far away from the rotating disc 302, of the cylindrical sleeve 307 penetrates through the fixed disc 303 and is fixedly connected with the fixed plate 3061 through a fixed bolt, the middle position of the other side face of the fixed plate 3061 is fixedly connected with one end of an output shaft of the first motor 306, the first motor 306 is fixedly connected to one outer side face of the fixed disc 303, the fixed plate 3061 can be driven to rotate under the rotating action of the first motor 306, the rotating disc 302 can be further rotated to achieve replacement of the punch 305, and the first motor 306 preferably uses a stepping motor, so that accurate adjustment of the angle can be achieved;

a T-shaped sliding ring 3071 is arranged in the middle of the outer side surface of the cylindrical sleeve 307 along the circumferential direction, a T-shaped limiting groove 3033 is arranged on the inner side surface of the fixed disc 303 outside the T-shaped sliding ring 3071 along the circumferential direction, and the T-shaped limiting groove 3033 is used for limiting and clamping the T-shaped sliding ring 3071;

mounting columns 3021 are uniformly arranged on the outer side surface of the rotating disc 302 along the circumferential direction, a rectangular mounting groove 3024 is formed in the inner side of the other end surface of each mounting column 3021, and the rectangular mounting groove 3024 is used for slidably sleeving a rectangular inserting column 3051 on one end of the punch 305;

a rectangular clamping block 3022 is fixedly sleeved on the mounting column 3021 of the rectangular mounting groove 3024 close to one side of the rotating disc 302;

a second internal threaded hole 3025 is formed in the mounting column 3021 on one side of the middle of the rectangular mounting groove 3024, a locking bolt 3026 is screwed in the second internal threaded hole 3025, one end of the locking bolt 3026 is in contact with one side surface of the rectangular insert column 3051, the locking bolt 3026 can be matched and fixed between the mounting column 3021 and the punch 305, and the arrangement is convenient for a worker to replace the punch 305;

a plurality of positioning blocks 3031 are uniformly distributed on one side face of the fixed disc 303 on the outer side of the rotating disc 302 along the circumferential direction, a middle positioning slot 3032 is radially arranged in each positioning block 3031, the middle positioning slot 3032 is used for limiting and clamping the rectangular clamping block 3022, the punch 305 can be limited and fixed in use by the arrangement, and the problem of poor stability of the punch 305 in the use process is solved.

As shown in fig. 2-5, a convex through groove 205 is horizontally disposed on the inner side of the moving frame 2, first sliding grooves 206 are symmetrically disposed on two sides of the lower end of the convex through groove 205, the convex through groove 205 is used for sliding engagement of the convex block 304, and the first sliding grooves 206 are used for limiting and clamping of the first limiting block 3041, which can play a role in limiting and guiding when the convex block 304 moves in the convex through groove 205;

the screw rod 202 is spirally sleeved in the convex block 304 on the moving frame 2, the screw rod 202 is rotatably connected to the moving frame 2 through a rolling bearing, one end of the moving frame 2 is embedded in the second motor 203, the second motor 203 is fixedly connected to the side surface of one end of the moving frame 2, and the convex block 304 moves along the direction of the convex through groove 205 under the action of the rotation of the second motor 203 to drive the screw rod 202 to rotate;

the middle part of one side surface of the moving frame 2 close to the vertical plate of the operating platform 1 is fixedly connected with a second hydraulic cylinder 201, the fixed section of the second hydraulic cylinder 201 is fixedly sleeved in the vertical plate of the operating platform 1, and the moving frame 2 can move in the direction vertical to the convex through groove 205 under the action of the second hydraulic cylinder 201;

the second limiting blocks 204 are symmetrically arranged on two sides of the bottom surface of the movable frame 2, the second limiting blocks 204 are used for limiting clamping of the second sliding grooves 401, and the arrangement can play a role in limiting and guiding when the movable frame 2 moves.

Referring to fig. 1 and 10-11, a plurality of rectangular through grooves are arranged in parallel on a bottom plate of an operating platform 1, the rectangular through grooves are arranged in parallel with ejector rods of an L-shaped support frame 4, a top plate 6 is slidably sleeved in the rectangular through grooves, and meanwhile, a mounting plate 5 is fixedly connected to the bottom surface of the operating platform 1 below the rectangular through grooves;

the top plate 6 is composed of a hard plate 601 at the upper end and a permanent magnet plate 602 at the lower end, the hard plate 601 and the permanent magnet plate 602 are bonded and fixed, and the hard plate 601 is preferably made of a metal material which cannot be magnetically adsorbed;

the top surface middle part position of mounting panel 5 is provided with electric magnetic stripe 501, all is provided with first internal thread hole 502 on 5 corners of mounting panel in the electromagnetism strip 501 outside, and electric magnetic stripe 501's upper end sliding sleeve closes at the logical groove of rectangle, and first internal thread hole 502 is fixed through the bottom surface cooperation of fixing bolt and operation panel 1, should set up the dismantlement installation of the mounting panel 5 of being convenient for.

Referring to fig. 1-2, C-shaped positioning frames 8 are symmetrically arranged on the top surfaces of the bottom plates of the operation tables 1 on both sides of the top plates 6, and the C-shaped positioning frames 8 and the top plates 6 are arranged in parallel;

a pressing plate 801 is arranged in an open slot of the C-shaped positioning frame 8, a third hydraulic cylinder 802 is fixedly connected to the middle of the top surface of the pressing plate 801, a fixing section of the third hydraulic cylinder 802 is fixedly sleeved on the C-shaped positioning frame 8, the pressing plate 801 can clamp and position two ends of a metal plate, and only the third hydraulic cylinder 802 needs to be controlled to contract when the metal plate is realized;

the C-shaped positioning frame 8 is provided with a fourth hydraulic cylinder 803 in the middle of the other outer side face provided with the open slot, the fixing section of the fourth hydraulic cylinder 803 is fixedly connected to the top surface of the bottom plate of the operating platform 1, and the fourth hydraulic cylinder 803 is arranged to control the relative movement of the two C-shaped positioning frames 8 in the horizontal direction, so that the workers can conveniently adjust the sizes of the metal plates.

Referring to fig. 1, 6, 8 and 11, a PLC controller 7 is fixedly mounted on a bottom support rod of the console 1, the PLC controller 7 is electrically connected to the first hydraulic cylinder 301, the air cylinder 3023, the first motor 306, the second motor 203, the second hydraulic cylinder 201, the electromagnetic strip 501, the third hydraulic cylinder 802 and the fourth hydraulic cylinder 803 through conductive wires, and the PLC controller 7 is configured to automatically control electrical components of the apparatus.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Rather, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a sheet metal processing is with location punching device, includes operation panel (1), removes frame (2) and mechanism (3) of punching a hole, its characterized in that: the whole operation table (1) is arranged in an L shape, two L-shaped support frames (4) are symmetrically arranged on two sides of the front end of the operation table (1), two ends of each L-shaped support frame (4) are respectively and fixedly connected to two vertical side surfaces of the operation table (1), a moving frame (2) is arranged on the top surface of each L-shaped support frame (4) in a sliding fit mode, and a punching mechanism (3) is arranged on each moving frame (2) in a moving fit mode;

the punching mechanism (3) comprises a rotating disc (302), a fixed disc (303) and a first hydraulic cylinder (301), one end of the first hydraulic cylinder (301) is fixedly connected to the top of the side face of the fixed disc (303), the other end of the first hydraulic cylinder (301) is fixedly connected to the bottom face of a convex block (304), and first limiting blocks (3041) are symmetrically arranged on the two side faces of the lower end of the convex block (304);

the rotating disc (302) is coaxially arranged on one side of the fixed disc (303), a cylinder (3023) is fixedly connected to the center of one side of the rotating disc (302), the fixed section of the cylinder (3023) is fixedly sleeved in the cylindrical sleeve (307), and the cylindrical sleeve (307) is slidably sleeved in the fixed disc (303);

one end, far away from the rotating disc (302), of the cylindrical sleeve (307) penetrates through the fixed disc (303) and is fixedly connected with the fixed plate (3061) through a fixed bolt, the middle position of the other side face of the fixed plate (3061) is fixedly connected with one end of an output shaft of the first motor (306), and the first motor (306) is fixedly connected to one outer side face of the fixed disc (303);

mounting columns (3021) are uniformly arranged on the outer side surface of the rotating disc (302) along the circumferential direction, a rectangular mounting groove (3024) is formed in the inner side of the other end surface of the mounting column (3021), and the rectangular mounting groove (3024) is used for slidably sleeving a rectangular inserting column (3051) on one end of the punch (305);

a rectangular clamping block (3022) is fixedly sleeved on the mounting column (3021) on one side of the rectangular mounting groove (3024) close to the rotating disc (302);

a plurality of positioning blocks (3031) are uniformly distributed on one side face of the fixed disc (303) on the outer side of the rotating disc (302) along the circumferential direction, middle positioning grooves (3032) are radially arranged in the positioning blocks (3031), and the middle positioning grooves (3032) are used for limiting and clamping the rectangular clamping blocks (3022);

a convex through groove (205) is formed in the inner side of the moving frame (2) along the horizontal direction, first sliding grooves (206) are symmetrically formed in two sides of the lower end of the convex through groove (205), the convex through groove (205) is used for sliding and sleeving the convex block (304), and meanwhile the first sliding grooves (206) are used for limiting and clamping a first limiting block (3041);

a screw rod (202) is spirally sleeved in a convex block (304) on the moving frame (2), the screw rod (202) is rotatably connected to the moving frame (2) through a rolling bearing, one end of the moving frame (2) is embedded in a second motor (203), and the second motor (203) is fixedly connected to one end side face of the moving frame (2);

a second hydraulic cylinder (201) is fixedly connected to the middle of one side face, close to the vertical plate of the operating platform (1), of the moving frame (2), and a fixed section of the second hydraulic cylinder (201) is fixedly sleeved in the vertical plate of the operating platform (1);

a plurality of rectangular through grooves are arranged on a bottom plate of the operating platform (1) in parallel, the rectangular through grooves are arranged in parallel with ejector rods of the L-shaped support frame (4), a top plate (6) is sleeved in the rectangular through grooves in a sliding mode, and meanwhile, a mounting plate (5) is fixedly connected to the bottom surface of the operating platform (1) below the rectangular through grooves;

the top plate (6) is composed of a hard plate (601) positioned at the upper end and a permanent magnet plate (602) positioned at the lower end, and the hard plate (601) and the permanent magnet plate (602) are bonded and fixed;

the top surface middle part position of mounting panel (5) is provided with electric magnetic stripe (501), all be provided with first internal thread hole (502) on four turnings of mounting panel (5) in the electric magnetic stripe (501) outside, the upper end sliding sleeve of electric magnetic stripe (501) closes at the rectangle and leads to the groove, first internal thread hole (502) are fixed through the bottom surface cooperation of fixing bolt and operation panel (1).

2. The positioning and punching device for processing the metal plate as recited in claim 1, wherein a second internally threaded hole (3025) is provided in the mounting post (3021) on the side of the middle portion of the rectangular mounting groove (3024), a locking bolt (3026) is screw-fitted in the second internally threaded hole (3025), and one end of the locking bolt (3026) is in contact with one side surface of the rectangular insert post (3051).

3. The positioning and punching device for processing the metal plate as claimed in claim 1, wherein a T-shaped sliding ring (3071) is circumferentially arranged in the middle of the outer side surface of the cylindrical sleeve (307), a T-shaped limiting groove (3033) is circumferentially arranged on the inner side surface of the fixed disc (303) on the outer side of the T-shaped sliding ring (3071), and the T-shaped limiting groove (3033) is used for limiting and clamping the T-shaped sliding ring (3071).

4. The positioning and punching device for processing the metal plate as recited in claim 1, wherein a second sliding groove (401) is provided on the top surface of said L-shaped supporting frame (4); second limiting blocks (204) are symmetrically arranged on two sides of the bottom surface of the moving frame (2), and the second limiting blocks (204) are used for limiting and clamping the second sliding grooves (401).

5. The positioning and punching device for processing the metal plate as claimed in claim 1, wherein C-shaped positioning frames (8) are symmetrically arranged on the top surfaces of the bottom plates of the operation tables (1) at two sides of the top plates (6), and the C-shaped positioning frames (8) are arranged in parallel with the top plates (6).

6. The positioning and punching device for processing the metal plate as claimed in claim 5, wherein a pressing plate (801) is arranged in an open slot of the C-shaped positioning frame (8), a third hydraulic cylinder (802) is fixedly connected to the middle of the top surface of the pressing plate (801), and a fixed section of the third hydraulic cylinder (802) is fixedly sleeved on the C-shaped positioning frame (8).

7. The positioning and punching device for processing the metal plate as claimed in claim 5, wherein the C-shaped positioning frame (8) is provided with a fourth hydraulic cylinder (803) relative to the middle part of the other outer side surface provided with the open slot, and the fixed section of the fourth hydraulic cylinder (803) is fixedly connected to the top surface of the bottom plate of the operation table (1).

8. The positioning and punching device for processing the metal plate as recited in claim 1, wherein a PLC controller (7) is fixedly mounted on a bottom support rod of the operating table (1), and the PLC controller (7) is electrically connected to the first hydraulic cylinder (301), the air cylinder (3023), the first motor (306), the second motor (203), the second hydraulic cylinder (201), the electromagnetic strip (501), the third hydraulic cylinder (802) and the fourth hydraulic cylinder (803) through conductive wires.