CN113478881A

CN113478881A - Carbon fiber electric heater production device and method

Info

Publication number: CN113478881A
Application number: CN202110810942.6A
Authority: CN
Inventors: 冉景旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-10-08

Abstract

The invention discloses a device and a method for producing a carbon fiber electric heater. The invention relates to the field of electric heater production. The carbon fiber electric heater production device and the carbon fiber electric heater production method are composed of a clamping mechanism and a guarantee mechanism, the limiting plate is enabled to move down to limit a hydraulic cylinder through the limiting plate, the pin rod, the clamping block and other components are used in a matched mode, the operating personnel are protected, the safety performance of the device in the use process is improved, the movable plate is used in a matched mode, the inclined rod, the L-shaped plate and other components are used in a matched mode, the two L-shaped plates move relatively to fix the position and clamp and fix a workpiece, the workpiece surface is prevented from being pressed to deform through the arrangement of rollers, and the L-shaped plates, the clamping plate, the moving rod and other components are used in a matched mode, so that the carbon fiber electric heater is suitable for clamping workpieces of different sizes. This has solved and has not effectually prevented the maloperation function in the current part electric heater stamping device production process, and the punching press location in-process leads to panel edge bending deformation easily and can't fix the electric heater panel of equidimension not.

Description

Carbon fiber electric heater production device and method

Technical Field

The invention relates to the technical field of electric heater production, in particular to a carbon fiber electric heater production device and method.

Background

The carbon fiber electric heater is a fully novel electric heater which is designed and developed by adopting a high-new material, namely a carbon fiber heating wire as a heating body, and is provided with a temperature controller, a remote controller has the functions of heating and warming, and far infrared rays with higher radiation are also adopted, so that the carbon fiber electric heater is green, environment-friendly, efficient, energy-saving, safe and convenient, and mounting holes are generally formed by punching through a special punching device in the production process;

the prior patent (publication number: CN210701983U) discloses a stamping device for electric heater production, which comprises an upper beam, a support column, a base, a hydraulic oil cylinder, an upper die holder, a lower die holder, a processing table and a clamping and positioning assembly. The inventor finds that the following problems in the prior art are not solved in the process of realizing the scheme: 1. when the device is used, an effective anti-misoperation function is not provided, when an operator mistakenly starts the hydraulic oil cylinder, the operator is easy to cause extrusion injury to the operator who is operating or maintaining, and certain potential safety hazards are caused; 2. in the stamping and positioning process, the part to be pressed is lapped on the top of the second roller and can slide, and a certain height difference exists between the second roller and the second connecting plate part, so that the upper die is pressed against the surface of the part to be pressed when pressed down, the surface of the part to be pressed at the positions of the second roller and the second connecting plate part is easy to bend, the production quality of the electric heater is influenced, and the production cost is increased; 3. the device can't fix not electric heater panel of equidimension in the use, uses the limitation big, and the practicality is poor.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a carbon fiber electric heater production device and a carbon fiber electric heater production method, which solve the problem that no effective anti-misoperation function exists in the production process of the existing partial electric heater stamping device; the edge of a plate is easy to bend and deform in the stamping and positioning process of the existing electric heater stamping device; and current partial electric heater stamping device can't carry out the problem fixed to the electric heater panel of equidimension not.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a carbon fiber electric heater apparatus for producing, includes the base, a plurality of supporting legs of bottom fixedly connected with of base, the top fixedly connected with support of base, the upper portion fixedly connected with pneumatic cylinder of support, the bottom swing joint of pneumatic cylinder has and base matched with fixture, the rear end swing joint of base has the mechanism of guaranteeing.

Preferably, the clamping mechanism comprises a moving plate, the top of the moving plate is fixedly connected to the bottom of the hydraulic cylinder, a stamping block is fixedly connected to the middle position of the bottom of the moving plate, and oblique rods are symmetrically and fixedly connected to the left side and the right side of the bottom of the moving plate;

the rectangular channel has been seted up to the left and right sides symmetry of base, the spout has all been seted up at both ends around the rectangular channel inner wall, two swing joint has the L template between the spout, the chute with down tube matched with is seted up on the upper portion of L template, two shifting chutes have all been seted up to the relative one side in L template upper portion, the inside swing joint of shifting chute has the carriage release lever, and the homonymy is two the carriage release lever is kept away from fixedly connected with splint, every between the one end of shifting chute compression spring has been cup jointed in the equal activity in surface of carriage release lever.

Further preferably, the front side and the rear side of the L-shaped plate are fixedly connected with sliding blocks, the L-shaped plate is connected inside the sliding groove in a sliding mode through the sliding blocks, and the side wall of each sliding block is adjacent to the inner wall of the corresponding sliding groove, and balls are movably connected between the side wall of each sliding block and the inner wall of the corresponding sliding groove.

Further preferably, the front and back positions of the left side and the right side of the top of the base are fixedly connected with guide rods, guide holes matched with the guide rods are symmetrically formed in the upper portion of the movable plate, and the movable plate is movably connected with the guide rods through the guide holes.

Preferably, the support mechanism comprises a movable groove, the movable groove is formed in the middle of the rear end of the base, a limiting plate is movably connected inside the movable groove, a return spring is fixedly connected between each of two sides of the limiting plate and the inner bottom surface of the movable groove, a limiting groove is formed in the lower portion of the limiting plate, and a pin plate is movably inserted into the limiting groove;

the rear end of the base is provided with a pin groove matched with the pin plate, the left end of the pin plate is movably inserted in the pin groove, the middle of the pin plate is provided with a clamping groove, and the top of the base is movably connected with a clamping block matched with the clamping groove.

Preferably, a clamping groove is formed in the upper portion, close to the clamping groove, of the base, the clamping block is movably inserted into the clamping groove, and the top and the bottom of the clamping block are both inclined planes;

and a pushing spring is fixedly connected between the left end of the pin plate and the inner wall of the pin groove, and the right end of the pin plate is arranged to be an arc-shaped surface.

Further preferably, the middle part of the base is provided with a blanking hole, and the bottom of the base is lapped with a material collecting box matched with the blanking hole.

A use method of a carbon fiber electric heater production device comprises the following steps:

s1, firstly, the workpiece is placed in the middle of the top of the base and pushed to one side of the limiting plate for limiting, the hydraulic cylinder is started, the bottom of the hydraulic cylinder extends out to drive the movable plate to move downwards, at the moment, the inclined rods on the two sides of the bottom of the movable plate slide in a matched mode with the inclined grooves, two L-shaped plates slide in the two rectangular grooves formed in the base relatively, the workpiece is clamped and fixed, meanwhile, compression springs on the two sides of the L-shaped plates buffer, the workpiece is guaranteed to be accurate in position, the phenomenon that the workpiece surface is pressed to deform due to the arrangement of the idler wheels is avoided, and the production and processing quality is improved.

S2, because the slide plate is arranged in the moving groove through the moving rod, the clamping plates can move on the side walls of the L-shaped plates due to the buffering of the compression springs, the clamping plates are suitable for clamping workpieces with different sizes, meanwhile, the compression springs movably sleeved on the surfaces of the moving rods can effectively guarantee the stability of the clamping plates for clamping the workpieces, the application range is widened, and the practicability is high.

And S3, when one end of the workpiece is pressed to the front end of the limiting plate, the bottom of the workpiece can press the clamping block movably connected with the upper part of the base to move downwards, so that the bottom of the clamping block is matched with the clamping groove formed in the middle of the pin plate to slide, the pin plate is driven by the clamping block to move towards the inside of the pin groove, and the pin plate and the limiting groove formed in the lower part of the limiting plate are released from the clamping state.

And S4, pressing the limiting plate which is released from the clamping state to slide towards the inside of the movable groove by the movable plate along with the downward movement of the movable plate, so that the workpiece is punched by the punching block fixedly connected with the bottom of the movable plate.

S5, finally, after the punching of the workpiece is finished, the movable plate ascends along with the hydraulic cylinder, the limiting plate slides and ascends in the movable groove through the elastic recovery of the reset springs fixedly connected with the two sides, meanwhile, the workpiece at the top of the base is drawn out from the front end, the clamping block moving downwards is pressed by the workpiece and cannot abut against the pin plate, the pin plate is pushed by the pushing spring to move towards the limiting plate, then the clamping block ascends, the pin plate is clamped with the limiting groove formed in the lower portion of the limiting plate after ascending, the limiting plate is fixed at the current position to limit the downward movement of the hydraulic cylinder, the protection is carried out on an operator, and the safety performance of the device in the using process is improved.

(III) advantageous effects

The invention provides a carbon fiber electric heater production device and method, which have the following beneficial effects:

(1) the device passes through the limiting plate, the cooperation of parts such as cotter plate and fixture block is used, can move down to the pneumatic cylinder after work piece punching press is ended and carry on spacingly, the pneumatic cylinder removes pressing down to the limiting plate after the pneumatic cylinder moves up, make the limiting plate pass through reset spring and slide in the movable groove portion and rise, remove pressing down to the fixture block when taking off the work piece simultaneously, the fixture block shifts up this moment and makes the cotter plate move to the limiting plate direction, the right-hand member joint of cotter plate is inside the spacing inslot of limiting plate lower part after that, make the limiting plate fix and move down to the pneumatic cylinder at the current position and carry on spacingly, protect operating personnel, the security performance in the improvement device use.

(2) The device is through the movable plate of being connected with the pneumatic cylinder, the cooperation of parts such as down tube and L template are used, the movable plate moves down through the pneumatic cylinder is flexible, and the down tube that drives both sides slides respectively on two L templates, make two L template relative movement fix a position the work piece that is located on the base and press from both sides tightly fixed, the compression spring buffering of L template both sides, guarantee that the work piece position is accurate, make the bottom surface of punching press piece can stabilize the surface contact with the work piece in order to carry out the punching press, need not set up the gyro wheel, avoid leading to work piece surface pressurized through the gyro wheel setting and produce the deformation, promote production processingquality.

(3) The device uses through the cooperation of parts such as L template, splint and carriage release lever, makes splint can remove at the lateral wall of L template, is suitable for and presss from both sides tightly the work piece of equidimension not, and the compression spring that the surface activity of simultaneously moving rod cup jointed can effectively guarantee splint centre gripping work piece's stability, promotes application scope, and the practicality is strong.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of the invention at location A of FIG. 1;

FIG. 3 is a right sectional view of the securing mechanism of the present invention;

FIG. 4 is an enlarged view of the invention at location B of FIG. 3;

FIG. 5 is a rear sectional view of the position of the active slot and the position of the position limiting plate of the present invention;

FIG. 6 is a sectional top view of the position of the rectangular slot and L-shaped plate of the present invention.

In the figure: 1, a base; 2, supporting legs; 3, a bracket; 4, a hydraulic cylinder; 5, a clamping mechanism; 501 moving the board; 502 stamping a block; 503 diagonal rods; 504 a rectangular slot; 505 chute; 506L pattern plates; 507 chute; 508 moving the slot; 509 a travel bar; 510, clamping plates; 511 compressing the spring; 6, a guarantee mechanism; 601 a movable groove; 602 a limiting plate; 603 a return spring; 604 a limiting groove; 605 a pin plate; 606 pin slots; 607 a card slot; 608 a cartridge.

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.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a carbon fiber electric heater apparatus for producing, includes base 1, a plurality of supporting legs of bottom fixedly connected with 2 of base 1, base 1's top fixedly connected with support 3, support 3's upper portion fixedly connected with pneumatic cylinder 4, pneumatic cylinder 4's bottom swing joint have with base 1 matched with fixture 5, base 1's rear end swing joint has guarantee mechanism 6.

According to the invention, the clamping mechanism 5 comprises a moving plate 501, the top of the moving plate 501 is fixedly connected to the bottom of the hydraulic cylinder 4, a stamping block 502 is fixedly connected to the middle position of the bottom of the moving plate 501, oblique rods 503 are symmetrically and fixedly connected to the left side and the right side of the bottom of the moving plate 501, rectangular grooves 504 are symmetrically formed in the left side and the right side of the base 1, sliding grooves 505 are formed in the front end and the rear end of the inner wall of each rectangular groove 504, an L-shaped plate 506 is movably connected between the two sliding grooves 505, an inclined groove 507 matched with the oblique rods 503 is formed in the upper portion of the L-shaped plate 506, two moving grooves 508 are formed in the opposite side of the upper portions of the two L-shaped plates 506, moving rods 509 are movably connected inside the moving grooves 508, a clamping plate 510 is fixedly connected between the ends, far away from the moving grooves 508, of the two moving rods 509 on the same side, and a compression spring 511 is movably sleeved on the surface of each moving rod 509. It should be noted that, the rubber pads are fixedly connected to the opposite sides of the two clamping plates 510, so that scratching of the clamping plates 510 to a workpiece in the clamping process is avoided, friction force in the clamping process is improved, and clamping is firmer.

In the invention, the front side and the rear side of the L-shaped plate 506 are fixedly connected with sliding blocks, the L-shaped plate 506 is connected inside the sliding groove 505 in a sliding manner through the sliding blocks, and a ball is movably connected between the side wall of each sliding block and the inner wall of the adjacent sliding groove 505. It should be noted that the frictional resistance during the sliding between the L-shaped plate 506 and the chute 505 is reduced by the balls.

In the invention, the front and back positions of the left side and the right side of the top of the base 1 are fixedly connected with guide rods, guide holes matched with the guide rods are symmetrically formed in the upper part of the movable plate 501, and the movable plate 501 is movably connected with the guide rods through the guide holes. It should be noted that the stability of the moving plate 501 during downward movement can be ensured by the guide rods and the guide holes.

In the invention, the guarantee mechanism 6 comprises a movable groove 601, the movable groove 601 is arranged in the middle of the rear end of the base 1, a limiting plate 602 is movably connected inside the movable groove 601, a return spring 603 is fixedly connected between each of two sides of the limiting plate 602 and the inner bottom surface of the movable groove 601, a limiting groove 604 is arranged at the lower part of the limiting plate 602, a pin plate 605 is movably inserted inside the limiting groove 604, a pin groove 606 matched with the pin plate 605 is arranged at the rear end of the base 1, the left end of the pin plate 605 is movably inserted inside the pin groove 606, a clamping groove 607 is arranged in the middle of the pin plate 605, and a clamping block 608 matched with the clamping groove 607 is movably connected to the top of the base 1. It should be noted that the bottom of the moving plate 501 is fixedly connected with a limiting block matched with the limiting plate 602, the height of the limiting block is less than or equal to the height of the stamping block 502, and meanwhile, steel balls are movably connected between two sides of the limiting plate 602 and the side wall of the movable groove 601, so that the friction resistance of the limiting plate 602 during moving is reduced.

In the invention, a clamping groove is formed in the upper part of the base 1 close to the clamping groove 607, the clamping block 608 is movably inserted in the clamping groove, the top and the bottom of the clamping block 608 are both arranged to be inclined planes, a pushing spring is fixedly connected between the left end of the pin plate 605 and the inner wall of the pin groove 606, and the right end of the pin plate 605 is arranged to be an arc-shaped surface. It should be noted that, a stopper is fixedly connected to the upper portion of the latch 608, and a restoring spring is fixedly connected between the bottom of the stopper and the inner bottom surface of the engaging groove, when the workpiece releases the pressing on the top of the latch 608, the restoring spring drives the latch 608 to rise, and meanwhile, an inclined surface is formed on one side of the front end of the latch 608 on the base 1, so that the workpiece presses the latch 608 to move down when sliding on the base 1.

In the invention, the middle part of a base 1 is provided with a blanking hole, and the bottom of the base 1 is lapped with a material collecting box matched with the blanking hole.

s1, firstly, the workpiece is placed in the middle of the top of the base 1 and pushed to one side of the limiting plate 602 for limiting, the hydraulic cylinder 4 is started, the output end of the bottom of the hydraulic cylinder 4 extends out to drive the moving plate 501 to move downwards, at the moment, the inclined rods 503 and the inclined grooves 507 on the two sides of the bottom of the moving plate 501 slide in a matching mode, the two L-shaped plates 506 slide relatively in the two rectangular grooves 504 formed in the base 1, the workpiece is clamped and fixed by the two clamping plates 510 fixedly connected with the two L-shaped plates 506, meanwhile, the compression springs 511 movably sleeved on the surfaces of the moving rods 509 fixedly connected with the clamping plates 510 buffer, the position of the workpiece is guaranteed to be accurate, the bottom surface of the stamping block 502 can stably contact with the surface of the workpiece to stamp, no roller is needed, the deformation of the surface of the workpiece caused by the pressing of the roller is avoided, and the production and processing quality is improved.

S2, due to the fact that the movable rod 509 slides in the moving groove 508 and the compression spring 511 buffers the movable rod, the clamping plate 510 can move on the side wall of the L-shaped plate 506, the clamping device is suitable for clamping workpieces of different sizes, meanwhile, the compression spring 511 movably sleeved on the surface of the movable rod 509 can effectively guarantee the stability of the clamping plate 510 for clamping the workpieces, the application range is widened, and the practicability is high.

S3, when one end of the workpiece is pressed against the front end of the limit plate 602, the bottom of the workpiece presses against the fixture block 608 movably connected with the upper part of the base 1 to move downwards, so that the bottom of the fixture block 608 is matched with the fixture groove 607 formed in the middle of the pin plate 605 to slide, at the moment, the pin plate 605 is driven by the fixture block 608 to move towards the inside of the pin groove 606, the pin plate 605 is released from the clamping state with the limit groove 604 formed in the lower part of the limit plate 602, and the limit plate 602 can continuously slide towards the inside of the movable groove 601.

And S4, moving the moving plate 501 downwards, and pressing the limiting plate 602 with the clamping state released by the moving plate 501 to slide towards the inside of the movable groove 601, so that the workpiece is punched by the punching block 502 fixedly connected to the bottom of the moving plate 501.

S5, finally, after the punching of the workpiece is finished, the moving plate 501 ascends along with the hydraulic cylinder 4, at this time, the limiting plate 602 slides and ascends in the movable groove 601 through the elastic recovery of the return springs 603 fixedly connected at the two sides, meanwhile, the workpiece at the top of the base 1 is drawn out from the front end, at this time, the fixture block 608 which is pressed down by the workpiece cannot press the pin plate 605, the pin plate 605 is pushed by the pushing spring to move towards the direction of the limiting plate 602, then the fixture block 608 ascends, the pin plate 605 is clamped with the limiting groove 604 arranged at the lower part of the ascending limiting plate 602, the limiting plate 602 is fixed at the current position to limit the descending of the hydraulic cylinder 4, when the workpiece is not pressed to the front end of the limiting plate 602 for punching production, even if the operator starts the moving plate 501 of the hydraulic cylinder, the operator is prevented from mistakenly starting the hydraulic cylinder to cause extrusion injury to the operator or maintenance personnel, and the operator is protected, the safety performance of the device in the use process is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a carbon fiber electric heater apparatus for producing, includes base (1), its characterized in that: the supporting legs are characterized in that the supporting legs are fixedly connected to the bottom of the base (1) in a plurality of supporting legs (2), the top of the base (1) is fixedly connected with a support (3), the upper portion of the support (3) is fixedly connected with a hydraulic cylinder (4), the bottom of the hydraulic cylinder (4) is movably connected with a clamping mechanism (5) matched with the base (1), and the rear end of the base (1) is movably connected with a guarantee mechanism (6).

2. The carbon fiber electric heater production device of claim 1, characterized in that: the clamping mechanism (5) comprises a moving plate (501), the top of the moving plate (501) is fixedly connected to the bottom of the hydraulic cylinder (4), a stamping block (502) is fixedly connected to the middle position of the bottom of the moving plate (501), and oblique rods (503) are symmetrically and fixedly connected to the left side and the right side of the bottom of the moving plate (501);

rectangular channel (504) have been seted up to the left and right sides symmetry of base (1), spout (505), two have all been seted up at both ends around rectangular channel (504) inner wall swing joint has L template (506) between spout (505), chute (507) with down tube (503) matched with is seted up on the upper portion of L template (506), two shift chute (508) have all been seted up to one side that L template (506) upper portion is relative, the inside swing joint of shift chute (508) has carriage release lever (509), and the homonymy is two carriage release lever (509) are kept away from fixedly connected with splint (510), every between the one end of shift chute (508) compression spring (511) have been cup jointed in the equal activity in surface of carriage release lever (509).

3. The carbon fiber electric heater production device of claim 2, characterized in that: the all fixedly connected with slider in both sides around L template (506), L template (506) pass through slider sliding connection in the inside of spout (505), the lateral wall of slider and adjacent swing joint has the ball between the inner wall of spout (505).

4. The carbon fiber electric heater production device of claim 2, characterized in that: the all fixedly connected with guide bar in position around the base (1) top left and right sides, the upper portion symmetry of movable plate (501) is seted up with guide bar matched with guiding hole, movable plate (501) pass through guiding hole and guide bar swing joint.

5. The carbon fiber electric heater production device of claim 2, characterized in that: the guarantee mechanism (6) comprises a movable groove (601), the movable groove (601) is formed in the middle of the rear end of the base (1), a limiting plate (602) is movably connected inside the movable groove (601), a reset spring (603) is fixedly connected between each of two sides of the limiting plate (602) and the inner bottom surface of the movable groove (601), a limiting groove (604) is formed in the lower portion of the limiting plate (602), and a pin plate (605) is movably inserted into the limiting groove (604);

the rear end of the base (1) is provided with a pin groove (606) matched with the pin plate (605), the left end of the pin plate (605) is movably inserted into the pin groove (606), the middle of the pin plate (605) is provided with a clamping groove (607), and the top of the base (1) is movably connected with a clamping block (608) matched with the clamping groove (607).

6. The carbon fiber electric heater production device of claim 5, characterized in that: a clamping groove is formed in the upper portion, close to the clamping groove (607), of the base (1), the clamping block (608) is movably inserted into the clamping groove, and the top and the bottom of the clamping block (608) are both provided with inclined planes;

a pushing spring is fixedly connected between the left end of the pin plate (605) and the inner wall of the pin groove (606), and the right end of the pin plate (605) is set to be an arc-shaped surface.

7. The carbon fiber electric heater production device of claim 1, characterized in that: the blanking hole has been seted up in the middle part of base (1), the bottom overlap joint of base (1) has the case that gathers materials with blanking hole matched with.

8. The use method of the carbon fiber electric heater production device according to claim 5, characterized in that: the method comprises the following steps:

s1, firstly, placing a workpiece in the middle of the top of a base (1), pushing the workpiece to one side of a limiting plate (602) for limiting, starting a hydraulic cylinder (4), extending the bottom of the hydraulic cylinder (4) to drive a moving plate (501) to move downwards, enabling inclined rods (503) on two sides of the bottom of the moving plate (501) to slide in a matching manner with inclined grooves (507), enabling two L-shaped plates (506) to slide relatively in two rectangular grooves (504) formed in the base (1), clamping and fixing the workpiece, and simultaneously buffering compression springs (511) on two sides of the L-shaped plates (506), so that the position of the workpiece is accurate, the workpiece surface is prevented from being pressed to deform due to the arrangement of rollers, and the production and processing quality is improved;

s2, as the movable rod (509) slides in the movable groove (508) and is buffered by the compression spring (511), the clamping plate (510) can move on the side wall of the L-shaped plate (506), so that workpieces with different sizes can be clamped, and meanwhile, the compression spring (511) movably sleeved on the surface of the movable rod (509) can effectively ensure the stability of the clamping plate (510) for clamping the workpieces, the application range is improved, and the practicability is strong;

s3, when one end of the workpiece is pressed against the front end of the limiting plate (602), the bottom of the workpiece can press against a clamping block (608) movably connected with the upper part of the base (1) to move downwards, so that the bottom of the clamping block (608) is matched with a clamping groove (607) formed in the middle of the pin plate (605) to slide, and at the moment, the pin plate (605) is driven by the clamping block (608) to move towards the inside of the pin groove (606), so that the pin plate (605) and the limiting groove (604) formed in the lower part of the limiting plate (602) are released from a clamping state;

s4, moving the moving plate (501) downwards along with the moving plate (501), wherein the moving plate (501) can press the limiting plate (602) which is released from the clamping state to slide towards the inside of the movable groove (601), so that the punching block (502) fixedly connected with the bottom of the moving plate (501) performs punching production on the workpiece;

s5, finally, after the punching of the workpiece is finished, the moving plate (501) rises along with the hydraulic cylinder (4), at the moment, the limiting plate (602) slides and rises in the movable groove (601) through elastic recovery of the return springs (603) fixedly connected with the two sides, meanwhile, the workpiece on the top of the base (1) is pulled out from the front end, at the moment, the clamping block (608) which moves downwards through the pressing of the workpiece cannot support against the pin plate (605), the pin plate (605) is pushed to move towards the limiting plate (602) by the pushing spring, then the clamping block (608) rises, the pin plate (605) is clamped with the limiting groove (604) formed in the lower part of the raised limiting plate (602), the limiting plate (602) is fixed at the current position to limit the downward movement of the hydraulic cylinder (4), the protection is performed on operators, and the safety performance of the device in the using process is improved.