CN112246945A

CN112246945A - Stamping method for stamping large-sized plate

Info

Publication number: CN112246945A
Application number: CN202011061162.8A
Authority: CN
Inventors: 徐霞
Original assignee: Ji'an Chifan Electronic Technology Co ltd
Current assignee: Ji'an Chifan Electronic Technology Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-01-22

Abstract

The invention discloses a stamping method for stamping large plates in the technical field of plate stamping, and stamping equipment suitable for the stamping method for the plates comprises a stamping rack, wherein a workbench is fixedly connected to the inner wall of the stamping rack, a hydraulic cylinder is fixedly connected to the top of the stamping rack, and an upper template is fixedly connected to the bottom of the hydraulic cylinder; according to the invention, the intermediate plate transmission device and the intermediate plate limiting device are arranged to realize the purpose of quickly replacing intermediate plates with different thicknesses and automatically positioning in a working area, so that the stamping depth can be adjusted through automatic replacement, a whole set of die does not need to be replaced according to the stamping depth, the applicability range of the die is increased, the whole die does not need to be replaced, the cost expenditure is reduced, the manual participation in the whole replacement process is reduced, the labor intensity is reduced, and the working efficiency is ensured.

Description

Stamping method for stamping large-sized plate

Technical Field

The invention relates to the technical field of plate stamping, in particular to a stamping method for stamping a large plate.

Background

The stamping is a forming method in which a press and a die are used to apply external force to a plate, a strip, a pipe, a profile, etc. to cause plastic deformation or separation, thereby obtaining a workpiece (stamped part) of a desired shape and size.

The invention case of plate stamping disclosed in the prior art, the Chinese patent with patent application number 202010200973.5, comprises an upper die holder and a lower die holder, wherein a cutter and a stamping device are sequentially arranged on the upper die holder along the advancing direction of plates; and the lower die base is provided with a cutting platform which is matched with the cutter to cut the plate and a stamping platform which is matched with the stamping device to stamp.

When among the prior art to panel stamping forming, when stamping forming be frame type or cylindrical, when frame type or the columniform degree of depth after the needs increase shaping, change the mould of another kind of degree of depth or increase the thickness of bed die usually, but change the mould of another kind of degree of depth and can cause the waste of resource, increased expenditure cost, the thickness that increases the bed die is usually the manual work to go on, inconvenient operation, and the location is wasted time and energy.

Based on the above, the invention designs a stamping method for stamping large-scale plates, so as to solve the above problems.

Disclosure of Invention

The invention aims to provide a stamping method for stamping a large-sized plate, which aims to solve the problems that when the plate is stamped into a frame shape or a cylindrical shape in the prior art, when the frame shape or the cylindrical shape is required to be formed, the thickness of a mould with the other depth is usually changed or the thickness of a lower mould is increased, but the waste of resources is caused by changing the mould with the other depth, the expenditure cost is increased, the manual operation is inconvenient for increasing the thickness of the lower mould, and the positioning is time-consuming and labor-consuming.

In order to achieve the purpose, the invention provides the following technical scheme: a stamping method for stamping large plates comprises a stamping rack, wherein a workbench is fixedly connected to the inner wall of the stamping rack, a hydraulic cylinder is fixedly connected to the top of the stamping rack, an upper template is fixedly connected to the bottom of the hydraulic cylinder, two ejector rods are fixedly connected to two sides of the upper template, a forming block is fixedly connected to the bottom of the upper template, step surfaces are arranged on two sides of the inner wall of the stamping rack, a lower template is fixedly connected to the surface of the workbench at a position corresponding to the upper template, a bottom cavity is arranged in the middle of the lower template, a motor supporting plate is fixedly connected to the side surface of the stamping rack, an intermediate plate transmission device is commonly connected to two sides of the inner wall of the stamping rack, and an intermediate plate limiting device is connected to the intermediate position of the step surfaces;

the middle plate transmission device comprises a motor, the motor is fixedly connected to the top of a motor supporting plate, a first supporting plate is fixedly connected to the side face of the stamping rack, a motor output shaft penetrates through and is rotatably connected to the first supporting plate, two first chain wheels are fixedly connected to the surface of the motor output shaft, a first shaft is rotatably connected to the end portion of the other side of the stamping rack, two second chain wheels are fixedly connected to the surface of the first shaft, a chain is meshed with the first chain wheels and the second chain wheels together, three groups of limiting rods are fixedly connected to the surface of the chain, the number of each group of limiting rods is two, the two limiting rods are inserted with a middle plate, the middle plate is slidably connected to a step face, sliding plates are fixedly connected to two sides of the middle plate, sliding grooves are formed in the tops of the step faces on two sides of the inner wall of the, the top of the middle plate is provided with a top cavity and four cylindrical holes which penetrate through the middle plate;

the middle plate limiting device comprises two L-shaped grooves which are symmetrically formed and penetrate through the top and the bottom of the stamping rack, the inner wall of each L-shaped groove is rotatably connected with two rollers, the surfaces of the rollers are slidably connected with ropes, the top of each step surface is provided with a first notch and a second notch which penetrate through the step surface, the first notch and the second notch are mutually penetrated, the inner wall of each first notch is slidably connected with a first limiting block, the side surface of each first limiting block is an inclined surface, one side of each first limiting block is fixedly connected with a first limiting plate, the bottom of the middle plate is provided with two first limiting grooves and two second limiting grooves, each first limiting plate is slidably connected onto the inner wall of each second notch, the bottom of each first limiting block is fixedly connected with a first spring, the other end of each first spring is fixedly connected onto the inner wall of each first notch, and one end of each rope is fixedly connected onto the bottom, the other end of the rope is fixedly connected with a pulling rod, a third notch is formed in the top of the step surface of the inner wall of the stamping rack, a second limiting block and an L-shaped limiting plate are connected to the inner wall of the third notch in a sliding mode, the second limiting block is fixedly connected with the L-shaped limiting plate, the side face of the second limiting block is an inclined plane, a second spring is fixedly connected to the side faces of the second limiting block and the L-shaped limiting plate, the other end of the second spring is fixedly connected to the inner wall of the third notch, a first supporting rod is fixedly connected to one end of the pulling rod, the first supporting rod penetrates through the stamping rack, the end of the first supporting rod is fixedly connected with an extrusion plate, three extrusion springs are fixedly connected to the top of the extrusion plate, the other end of the extrusion springs is fixedly connected to the stamping rack, a third limiting groove is, bosses are fixedly connected to two sides of the pulling rod, fourth notches are formed in two sides of the stamping rack, the other end of the pulling rod is connected to the inner wall of each fourth notch in a sliding mode, a third spring is fixedly connected to the bottom of the pulling rod, and the other end of the third spring is fixedly connected to the inner wall of each fourth notch;

the stamping method comprises the following steps:

the method comprises the following steps: taking a middle plate with proper thickness, inserting the middle plate onto a limiting rod on a chain, starting a motor, and bringing the middle plate to a working area;

step two: the middle plate enters a working area, is limited in the left-right direction by a first limiting block and a first limiting plate, and is limited by a spring in the up-down direction of the extrusion plate, and the middle plate is positioned in the working area at the moment, and the motor stops running;

step three: starting a hydraulic cylinder to drive a forming block to punch and form the plate, starting the hydraulic cylinder to move upwards after punching is finished, driving a rope and a first supporting rod to move by a mandril through a pulling rod, driving a squeezing plate and a first limiting block to move through the rope and the first supporting rod, gradually releasing the positioning of the intermediate plate, starting a motor again, taking the intermediate plate out of a working area, and replacing the intermediate plate with the next thickness;

when the semi-automatic middle plate punching machine works, when a frame or a cylinder is punched and formed on a plate in the prior art, when the depth of the formed frame or cylinder needs to be increased, a mold with another depth is usually replaced or the thickness of a lower mold is increased, but the replacement of the mold with the other depth causes resource waste, the expenditure cost is increased, the increase of the thickness of the lower mold is usually inconvenient to operate manually, and the positioning wastes time and labor, the semi-automatic replacement and the automatic positioning of the middle plate are realized by arranging a middle plate, a middle plate transmission device and a middle plate limiting device, when the depth of the formed frame or cylinder needs to be increased, the middle plate with proper thickness is firstly taken and is inserted on a limiting rod on a chain, a motor is started, the motor drives the middle plate to move through a chain wheel and the chain, the middle plate contacts with a first limiting block inclined plane and extrudes the first limiting block to move downwards, the first limiting block extrudes the first spring and drives the first limiting plate to move downwards, the middle plate contacts and extrudes the second limiting block to move backwards, the second limiting block drives the L-shaped limiting plate to extrude the second spring and gradually releases the limit of the extrusion plate, when the first limiting block and the first limiting plate move to be matched with the first limiting groove and the second limiting groove, the first limiting block and the first limiting plate are popped out under the action of the first spring to enter the first limiting groove and the second limiting groove to limit the middle plate in the left and right directions, simultaneously the extrusion plate which releases the limit moves downwards under the action of the extrusion spring and contacts the top of the middle plate to limit the spring in the up and down directions of the middle plate, the motor stops running at the moment, the process realizes the automatic positioning of the middle plate, when the middle plate needs to be replaced, the hydraulic cylinder is started to move upwards, the hydraulic cylinder drives the mandril to move upwards through the upper template, the ejector pin drives the pulling rod to move upwards through the boss on the pulling rod, the pulling rod drives the first limiting block and the extrusion plate to move through the rope and the first supporting rod, the first limiting block drives the first limiting plate to gradually relieve the limitation on the middle plate, meanwhile, the L-shaped limiting plate enables the pulling rod to reenter the third limiting groove on the side face of the extrusion plate to realize the limitation on the extrusion plate, the limitation on the middle plate is relieved from top to bottom and from left to right at the moment, the middle plate can be replaced by taking the middle plate out of a working area through a starting motor, the middle plates with different thicknesses can be replaced quickly by the aid of the process, the positioning is automatically carried out in the working area, manual participation is reduced, labor intensity is reduced, working efficiency is guaranteed, the whole die does not need to be replaced, and cost expenditure is reduced.

As a further scheme of the invention, a third support plate is fixedly connected to the side surface of the stamping rack, a trigger block is slidably connected to the top of the third support plate, the trigger block penetrates through the side surface of the stamping rack and is slidably connected to the step surface, a first connecting rod is fixedly connected to the side surface of the trigger block, a fourth spring is sleeved on the surface of the first connecting rod, two ends of the fourth spring are respectively and fixedly connected to the trigger block and the third support plate, a strip-shaped plate is fixedly connected to the end part of the first connecting rod, a second connecting rod is fixedly connected to the end part of the strip-shaped plate, a top plate is inserted into the second connecting rod, a circular table is fixedly connected to the bottom of the top plate, a rectangular groove is formed in the top of the working table, the top plate penetrates through the working table on the inner wall of the stamping rack and, the bottom of the workbench is fixedly connected with a cylindrical shell, the circular table is connected to the inner wall of the cylindrical shell in a sliding mode, the bottom of the circular table and the inner wall of the cylindrical shell are fixedly connected with a fifth spring together, the side face of the middle plate is provided with a strip-shaped groove, and the side face of the upper template is fixedly connected with an L-shaped pressing plate; during operation, the intermediate lamella that gets off is still caught by the gag lever post plug-in, inconvenient manual work takes it off, through setting up the trigger block, the roof, fifth spring and rectangular plate, the intermediate lamella removes when contacting the trigger block inclined plane to side bar inslot wall, begin to push the trigger block, receive extruded trigger block to remove to the rear side and extrude the fourth spring, the trigger block passes through first connecting rod, the bar drives second connecting rod to remove to the rear side and relieves gradually spacing to the roof, motor stall when the roof is spacing to be relieved, spacing roof that is relieved pops out and drives rectangular plate rebound under the effect of fifth spring, rectangular plate contact intermediate lamella bottom is raised it to the spacing that breaks away from the gag lever post, at this moment staff alright with the aspect take it off with it, the problem that it is not good on the punching press frame has been solved, drive L type clamp plate when utilizing the pneumatic cylinder to take down during the restoration and press back to the rectangular plate effect again and be linked to the rectangular groove and by the second again The connecting rod is limited, and automatic reset is realized.

As a further scheme of the invention, six damping springs are fixedly connected to the top of the rectangular plate, and the other ends of the damping springs are fixedly connected with a damping plate; during operation, through setting up shock attenuation board and damping spring, the realization weakens the impact force when and the intermediate lamella contact, produces the damage when reducing both contacts.

As a further scheme of the invention, the bottom of the workbench is fixedly connected with three fourth supporting plates; during operation, play the effect of supporting the second connecting rod through setting up the backup pad, prevent simultaneously that it from being bent by the roof stretch because of length process.

As a further scheme of the invention, the bottom of the upper template is fixedly connected with four shock absorption columns, the top of the lower template is provided with four shock absorption holes, and the inner walls of the shock absorption holes are fixedly connected with sixth springs; during operation, through setting up shock attenuation hole and sixth spring, weaken the impact force when the punching press contacts, protection stamping equipment.

As a further scheme of the invention, the end part of the chute is a guide inclined plane; during operation, through setting up the direction inclined plane, the convenient guide to the intermediate lamella for it is in the spout that enters into more fast.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the intermediate plate transmission device and the intermediate plate limiting device are arranged to realize the purpose of quickly replacing intermediate plates with different thicknesses and automatically positioning in a working area, so that the stamping depth can be adjusted through automatic replacement, a whole set of die does not need to be replaced according to the stamping depth, the applicability range of the die is increased, the whole die does not need to be replaced, the cost expenditure is reduced, the manual participation in the whole replacement process is reduced, the labor intensity is reduced, and the working efficiency is ensured.

2. According to the invention, by arranging the trigger block, the top plate, the fifth spring and the rectangular plate, the top plate is popped out under the action of the fifth spring and drives the rectangular plate to contact the bottom of the middle plate and lift the rectangular plate to the position separated from the limiting rod, so that the rectangular plate can be conveniently taken down, and the problem that the rectangular plate is not easy to take on a stamping machine frame is solved.

3. According to the invention, the shock absorption plate and the shock absorption spring are arranged, so that the impact force generated when the shock absorption plate is contacted with the middle plate is weakened, and the damage generated when the shock absorption plate is contacted with the middle plate is reduced.

4. The supporting plate is arranged to play a role in supporting the second connecting rod, and meanwhile, the second connecting rod is prevented from being bent by the top plate due to overlong length.

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 first perspective view of the overall construction of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a second perspective view of the general construction of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a perspective view of the present invention taken longitudinally from the middle;

FIG. 7 is an enlarged view of a portion of FIG. 6 at D;

FIG. 8 is an enlarged view of a portion of FIG. 6 at E;

FIG. 9 is a third perspective view of the general construction of the invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at F;

FIG. 11 is a perspective view of the present invention taken transversely from the middle;

FIG. 12 is an enlarged view of a portion of FIG. 11 at G;

FIG. 13 is an enlarged view of a portion of FIG. 12 at H;

FIG. 14 is a perspective view of the present invention taken in a transverse direction;

FIG. 15 is an enlarged view of a portion of FIG. 14 at I;

FIG. 16 is a schematic view showing the connection relationship between the middle plate, the extrusion plate and the lower plate;

FIG. 17 is a partially cut perspective view of the middle plate, the extrusion plate, the lower plate, the first limiting block and the first limiting plate of the present invention;

FIG. 18 is a flow chart of a stamping method of the present invention.

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

the hydraulic cylinder comprises a hydraulic cylinder 1, an upper template 2, a push rod 3, a forming block 4, a step surface 5, a lower template 6, a guide inclined plane 7, a bottom cavity 8, a first chain wheel 9, a second chain wheel 10, a chain 11, a limiting rod 12, an intermediate plate 13, a sliding plate 14, an L-shaped groove 15, a roller 16, a rope 17, a first notch 18, a second notch 19, a first limiting block 20, a first limiting plate 21, a first limiting groove 22, a second limiting groove 23, a first spring 24, a pulling rod 25, a second limiting block 26, an L-shaped limiting plate 27, a second spring 28, a first supporting rod 29, an extrusion plate 30, an extrusion spring 31, a third limiting groove 32, a boss 33, a third spring 34, a triggering block 35, a fourth spring 36, a second connecting rod 37, a top plate 38, a circular table 39, a rectangular plate 40, a cylindrical shell 41, a fifth spring 42, a damping spring 43, a damping plate 44, a fourth supporting plate 45, a damping column 46, a sixth spring 47, The stamping machine comprises a stamping machine frame 48, a workbench 481, a strip-shaped groove 49, an L-shaped pressing plate 50, a motor 51, a first connecting rod 52 and a strip-shaped plate 53.

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. 1-18, the present invention provides a technical solution: a stamping method for stamping large plates comprises a stamping rack 48, wherein a workbench 481 is fixedly connected to the inner wall of the stamping rack 48, a hydraulic cylinder 1 is fixedly connected to the top of the stamping rack 48, an upper template 2 is fixedly connected to the bottom of the hydraulic cylinder 1, two ejector rods 3 are fixedly connected to two sides of the upper template 2, a forming block 4 is fixedly connected to the bottom of the upper template 2, step surfaces 5 are arranged on two sides of the inner wall of the stamping rack 48, a lower template 6 is fixedly connected to the surface of the workbench 481 at a position corresponding to the upper template 2, a bottom cavity 8 is arranged in the middle of the lower template 6, a motor support plate is fixedly connected to the side surface of the stamping rack 48, an intermediate plate transmission device is commonly connected to two sides of the inner wall of the stamping rack 48, and an intermediate plate limiting device is connected to the;

the middle plate transmission device comprises a motor 51, the motor 51 is fixedly connected to the top of the motor support plate, a first support plate is fixedly connected to the side surface of the stamping rack 48, an output shaft of the motor 51 penetrates through and is rotatably connected to the first support plate, two first chain wheels 9 are fixedly connected to the surface of the output shaft of the motor 51, a first shaft is rotatably connected to the end part of the other side of the stamping rack 48, two second chain wheels 10 are fixedly connected to the surface of the first shaft, a chain 11 is jointly meshed with the first chain wheels 9 and the second chain wheels 10, three groups of limiting rods 12 are fixedly connected to the surface of the chain 11, two limiting rods 12 are respectively provided with two limiting rods, a middle plate 13 is inserted into the two limiting rods 12, the middle plate 13 is slidably connected to the step surface 5, sliding plates 14 are fixedly connected to two sides of the middle plate 13, sliding grooves are respectively, the top of the middle plate 13 is provided with a penetrating top cavity and four cylindrical holes;

the intermediate plate limiting device comprises two L-shaped grooves 15 which are symmetrically arranged, the L-shaped grooves 15 penetrate through the top and the bottom of a stamping rack 48, the inner wall of the L-shaped groove 15 is rotatably connected with two rollers 16, the surfaces of the rollers 16 are slidably connected with ropes 17, the top of a step surface 5 is provided with a first notch 18 and a second notch 19 which penetrate through the step surface 5, the first notch 18 and the second notch 19 are mutually penetrated, the inner wall of the first notch 18 is slidably connected with a first limiting block 20, the side surface of the first limiting block 20 is an inclined surface, one side of the first limiting block 20 is fixedly connected with a first limiting plate 21, the bottom of the intermediate plate 13 is provided with two first limiting grooves 22 and two second limiting grooves 23, the first limiting plate 21 is slidably connected on the inner wall of the second notch 19, the bottom of the first limiting block 20 is fixedly connected with a first spring 24, the other end of the first spring 24 is fixedly connected on the inner wall, the other end of the rope 17 is fixedly connected with a pulling rod 25, the inner wall of the punching rack 48 is positioned at the top of the step surface 5 and is provided with a third notch, the inner wall of the third notch is slidably connected with a second limiting block 26 and an L-shaped limiting plate 27, the second limiting block 26 is fixedly connected with the L-shaped limiting plate 27, the side surface of the second limiting block 26 is an inclined surface, the side surfaces of the second limiting block 26 and the L-shaped limiting plate 27 are fixedly connected with a second spring 28, the other end of the second spring 28 is fixedly connected with the inner wall of the third notch, one end of the pulling rod 25 is fixedly connected with a first supporting rod 29, the first supporting rod 29 penetrates through the punching rack 48 and is fixedly connected with an extrusion plate 30 at the end part, the top part of the extrusion plate 30 is fixedly connected with three extrusion springs 31, the other end of the extrusion spring 31 is fixedly connected on the, bosses 33 are fixedly connected to two sides of the pulling rod 25, fourth notches are formed in two sides of the stamping rack 48, the other end of the pulling rod 25 is connected to the inner wall of each fourth notch in a sliding mode, a third spring 34 is fixedly connected to the bottom of the pulling rod 25, and the other end of the third spring 34 is fixedly connected to the inner wall of each fourth notch;

the stamping method comprises the following steps:

the method comprises the following steps: taking a middle plate 13 with proper thickness, inserting the middle plate 13 onto a limiting rod 12 on a chain 11, starting a motor 51, and bringing the middle plate 13 to a working area;

step two: the middle plate 13 enters the working area and is limited by the first limiting block 20 and the first limiting plate 21 in the left-right direction, and is limited by the vertical spring of the extrusion plate 30, and at the moment, the middle plate 13 is positioned in the working area, and the motor 51 stops running;

step three: starting the hydraulic cylinder 1 to drive the forming block 4 to punch and form the plate, starting the hydraulic cylinder 1 to move upwards after punching is finished, driving the rope 17 and the first support rod 29 to move by the ejector rod 3 through the pulling rod 25, driving the extrusion plate 30 and the first limit block 20 to move through the rope 17 and the first support rod 29, gradually releasing the positioning of the middle plate 13, starting the motor 51 again, and taking the middle plate 13 out of a working area to replace the middle plate 13 with the next thickness;

when the semi-automatic middle plate punching machine works, when a plate is punched and formed into a frame shape or a cylinder shape in the prior art, when the depth of the formed frame shape or the cylinder shape needs to be increased, a mold with another depth is usually replaced or the thickness of a lower mold is increased, but the replacement of the mold with another depth causes resource waste, the expenditure cost is increased, the increase of the thickness of the lower mold is usually inconvenient to operate manually, and the positioning is time-consuming and labor-consuming, the semi-automatic replacement and automatic positioning of the middle plate 13 are realized by arranging the middle plate 13, the middle plate transmission device and the middle plate limiting device, when the depth of the formed frame shape or the cylinder shape needs to be increased, the middle plate 13 with proper thickness is firstly taken, the middle plate 13 is inserted on the limiting rod 12 on the chain 11, the motor 51 is started, the motor 51 drives the middle plate 13 to move through the chain wheel and the chain 11, the middle plate 13 contacts the inclined plane of the first stopper 20 and extrudes the first stopper 20 to move downwards, the first stopper 20 extrudes the first spring 24 and drives the first limiting plate 21 to move downwards, meanwhile, the middle plate 13 contacts and extrudes the second stopper 26 to move towards the rear side, the second stopper 26 drives the L-shaped limiting plate 27 to extrude the second spring 28 and gradually release the limitation on the extrusion plate 30, when the first stopper 20 and the first limiting plate 21 move to be matched with the first limiting groove 22 and the second limiting groove 23, the first stopper 20 and the first limiting plate 21 are popped out under the action of the first spring 24 and enter the first limiting groove 22 and the second limiting groove 23 to realize the limitation on the left and right direction of the middle plate 13, meanwhile, the extrusion plate 30 which releases the limitation moves downwards under the action of the extrusion spring 31 and contacts the top of the middle plate 13 to play a role in limiting on the spring on the up and down direction of the middle plate 13, and the motor 51 stops running at the moment, the process realizes the automatic positioning of the intermediate plate 13, when the intermediate plate 13 needs to be replaced, the hydraulic cylinder 1 is started to move upwards, the hydraulic cylinder 1 drives the ejector rod 3 to move upwards through the upper template 2, the ejector rod 3 drives the pulling rod 25 to move upwards through the boss 33 on the pulling rod 25, the pulling rod 25 pulls the first limit block 20 and the extrusion plate 30 to move through the rope 17 and the first support rod 29, the first limit block 20 simultaneously drives the first limit block 21 to gradually relieve the limit on the intermediate plate 13, meanwhile, the L-shaped limit block 27 enters the third limit groove 32 on the side surface of the extrusion plate 30 again to realize the limit on the extrusion plate 30, at the moment, the upper limit, the lower limit, the left limit and the right limit on the intermediate plate 13 are relieved, the intermediate plate 13 with the next thickness can be replaced by taking the intermediate plate 13 with the next thickness out of the working area through the starting motor 51, the process realizes the purposes of quickly replacing the intermediate plates 13 with different thicknesses and automatically positioning in the working area, the labor participation is reduced, the labor intensity is reduced, the working efficiency is ensured, the whole die does not need to be replaced, and the cost expenditure is reduced.

As a further scheme of the invention, a third support plate is fixedly connected to the side surface of the stamping rack 48, a trigger block 35 is slidably connected to the top of the third support plate, the trigger block 35 penetrates through the side surface of the stamping rack 48 and is slidably connected to the step surface 5, a first connecting rod 52 is fixedly connected to the side surface of the trigger block 35, a fourth spring 36 is sleeved on the surface of the first connecting rod 52, two ends of the fourth spring 36 are respectively fixedly connected to the trigger block 35 and the third support plate, a strip-shaped plate 53 is fixedly connected to the end portion of the first connecting rod 52, a second connecting rod 37 is fixedly connected to the end portion of the strip-shaped plate 53, a top plate 38 is inserted into the second connecting rod 37, a circular table 39 is fixedly connected to the bottom of the top plate 38, a rectangular groove is formed in the top of the working table 481, the top plate 38 penetrates through the working table 481, the bottom of the workbench 481 is fixedly connected with a cylindrical shell 41, the circular table 39 is connected to the inner wall of the cylindrical shell 41 in a sliding manner, the bottom of the circular table 39 and the inner wall of the cylindrical shell 41 are fixedly connected with a fifth spring 42 together, the side surface of the middle plate 13 is provided with a strip-shaped groove 49, and the side surface of the upper template 2 is fixedly connected with an L-shaped pressing plate 50; when the stamping machine works, the replaced middle plate 13 is inserted by the limiting rod 12 and is inconvenient to take down manually, the triggering block 35 is extruded when the middle plate 13 moves to the inner wall of the side strip-shaped groove 49 contacts the inclined surface of the triggering block 35 by arranging the triggering block 35, the top plate 38, the fifth spring 42 and the rectangular plate 40, the extruded triggering block 35 moves towards the rear side and extrudes the fourth spring 36, the triggering block 35 drives the second connecting rod 37 to move towards the rear side through the first connecting rod 52 and the strip-shaped plate 53 and gradually releases the limitation on the top plate 38, the motor 51 stops running when the limitation on the top plate 38 is released, the released top plate 38 pops up under the action of the fifth spring 42 and drives the rectangular plate 40 to move upwards, the rectangular plate 40 contacts the bottom of the middle plate 13 and lifts the bottom of the middle plate to the limitation which is separated from the limiting rod 12, and the worker can take down the middle plate 13 conveniently at the moment, thereby solving the problem that the middle plate is not easy to take down on the stamping machine, when the automatic reset device is reset, the hydraulic cylinder 1 is used for pressing down, the L-shaped pressing plate 50 is driven to act on the rectangular plate 40, the rectangular plate is pressed back to the rectangular groove again and is limited by the second connecting rod 37 again, and the automatic reset is realized.

As a further scheme of the invention, the top of the rectangular plate 40 is fixedly connected with six damping springs 43, and the other ends of the damping springs 43 are fixedly connected with a damping plate 44; when the shock absorber works, the shock absorbing plate 44 and the shock absorbing spring 43 are arranged, so that the impact force generated when the shock absorbing plate is contacted with the middle plate 13 is weakened, and the damage generated when the shock absorbing plate is contacted with the middle plate is reduced.

As a further scheme of the present invention, the bottom of the workbench 481 is fixedly connected with three fourth supporting plates 45; in operation, the supporting plate is arranged to support the second connecting rod 37 and prevent the second connecting rod from being bent by the top plate 38 in the length process.

As a further scheme of the invention, the bottom of the upper template 2 is fixedly connected with four shock absorption columns 46, the top of the lower template 6 is provided with four shock absorption holes, and the inner walls of the shock absorption holes are fixedly connected with sixth springs 47; during operation, the shock absorption hole and the sixth spring 47 are arranged, so that impact force during stamping contact is weakened, and stamping equipment is protected.

As a further proposal of the invention, the end part of the chute is a guide inclined plane 7; during operation, through setting up direction inclined plane 7, the convenient guide to intermediate lamella 13 for it enters into the spout more fast.

The working principle is as follows: when the depth of a formed frame or cylinder needs to be increased, firstly, an intermediate plate 13 with a proper thickness is taken, the intermediate plate 13 is inserted into the limiting rod 12 on the chain 11, the motor 51 is started, the motor 51 drives the intermediate plate 13 to move through the chain wheel and the chain 11, the intermediate plate 13 contacts the inclined surface of the first limiting block 20 and extrudes the first limiting block 20 to move downwards, the first limiting block 20 extrudes the first spring 24 and drives the first limiting block 21 to move downwards, meanwhile, the intermediate plate 13 contacts and extrudes the second limiting block 26 to move towards the rear side, the second limiting block 26 drives the L-shaped limiting plate 27 to extrude the second spring 28 and gradually relieve the limitation on the extrusion plate 30, when the first limiting block 20 and the first limiting block 21 move to be matched with the first notch 18 and the second notch 19, the first limiting block 20 and the first limiting block 21 are popped up under the action of the first spring 24 to enter the first notch 18 and the second notch 19 to realize the limitation on the left and right direction of the intermediate plate 13, meanwhile, the extrusion plate 30 which releases the limit moves downwards under the action of the extrusion spring 31 and contacts the top of the middle plate 13, so that the spring limit of the middle plate 13 in the up-and-down direction is realized, the motor 51 stops running at the moment, the automatic positioning of the middle plate 13 is realized in the process, when the middle plate 13 needs to be replaced, the hydraulic cylinder 1 is started to move upwards, the hydraulic cylinder 1 drives the ejector rod 3 to move upwards through the upper template 2, the ejector rod 3 drives the pulling rod 25 to move upwards through the boss 33 on the pulling rod 25, the pulling rod 25 pulls the first limit block 20 and the extrusion plate 30 to move through the rope 17 and the first support rod 29, the first limit block 20 drives the first limit plate 21 to gradually release the limit of the middle plate 13, meanwhile, the L-shaped limit plate 27 enters the third limit groove 32 on the side surface of the extrusion plate 30 again to realize the limit of the extrusion plate 30, and at the moment, the up-and down limit and the left-and, through starter motor 51, with its intermediate lamella 13 of taking the workspace out alright change next thickness, realized the intermediate lamella 13 quick replacement to different thickness through above-mentioned process, and carry out the purpose of location automatically at the workspace, reduced artificial participation, reduced intensity of labour, guaranteed the efficiency of work, need not to change whole mould, reduced the expenditure of cost.

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. Furthermore, 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. A stamping method for stamping large-scale plates is characterized in that stamping equipment suitable for the stamping method comprises a stamping rack (48), a workbench (481) is fixedly connected to the inner wall of the stamping rack (48), and the stamping equipment is characterized in that: the stamping machine is characterized in that a hydraulic cylinder (1) is fixedly connected to the top of the stamping rack (48), an upper template (2) is fixedly connected to the bottom of the hydraulic cylinder (1), two ejector rods (3) are fixedly connected to two sides of the upper template (2), a forming block (4) is fixedly connected to the bottom of the upper template (2), step surfaces (5) are arranged on two sides of the inner wall of the stamping rack (48), a lower template (6) is fixedly connected to the position, corresponding to the upper template (2), on the surface of the workbench (481) and located in the middle of the lower template (6), a bottom cavity (8) is formed in the middle of the lower template (6), a motor support plate is fixedly connected to the side of the stamping rack (48), an intermediate plate transmission device is commonly connected to two sides of the inner wall of the stamping rack (48), and;

the middle plate transmission device comprises a motor (51), the motor (51) is fixedly connected to the top of a motor support plate, a first support plate is fixedly connected to the side face of the stamping rack (48), an output shaft of the motor (51) penetrates through and is rotatably connected to the first support plate, two first chain wheels (9) are fixedly connected to the surface of the output shaft of the motor (51), a first shaft is rotatably connected to the end part of the other side of the stamping rack (48), two second chain wheels (10) are fixedly connected to the surface of the first shaft, a chain (11) is meshed with the first chain wheels (9) and the second chain wheels (10) together, three groups of limiting rods (12) are fixedly connected to the surface of the chain (11), two limiting rods (12) in each group are inserted into a middle plate (13), and the middle plate (13) is slidably connected to a step face (5), sliding plates (14) are fixedly connected to two sides of the middle plate (13), sliding grooves are formed in the two sides of the inner wall of the stamping rack (48) and located at the tops of the step surfaces (5), the sliding plates (14) are connected to the inner wall of the sliding grooves in a sliding mode, and a penetrating top cavity and four cylindrical holes are formed in the top of the middle plate (13);

the middle plate limiting device comprises two symmetrical L-shaped grooves (15), the L-shaped grooves (15) penetrate through the top and the bottom of a punching machine frame (48), the inner wall of the L-shaped grooves (15) is connected with two rollers (16) in a rotating mode, the surfaces of the rollers (16) are connected with ropes (17) in a sliding mode, the top of a step surface (5) is provided with a first notch (18) and a second notch (19) which penetrate through the step surface (5), the first notch (18) and the second notch (19) are communicated with each other, the inner wall of the first notch (18) is connected with a first limiting block (20) in a sliding mode, the side surface of the first limiting block (20) is an inclined surface, one side of the first limiting block (20) is fixedly connected with a first limiting plate (21), the bottom of the middle plate (13) is provided with two first limiting grooves (22) and two second limiting grooves (23), and the first limiting plate (21) is connected to the inner wall of, the bottom of the first limiting block (20) is fixedly connected with a first spring (24), the other end of the first spring (24) is fixedly connected to the inner wall of the first notch (18), one end of a rope (17) is fixedly connected to the bottom of the first limiting block (20), the other end of the rope (17) is fixedly connected with a pulling rod (25), the inner wall of the punching rack (48) is positioned at the top of the step surface (5) and is provided with a third notch, the inner wall of the third notch is slidably connected with a second limiting block (26) and an L-shaped limiting plate (27), the second limiting block (26) is fixedly connected with the L-shaped limiting plate (27), the side surface of the second limiting block (26) is an inclined plane, the side surfaces of the second limiting block (26) and the L-shaped limiting plate (27) are fixedly connected with a second spring (28), and the other end of the second spring (28) is fixedly connected to the inner, one end of the pulling rod (25) is fixedly connected with a first supporting rod (29), the first supporting rod (29) penetrates through the stamping machine frame (48) and the end part is fixedly connected with an extrusion plate (30), the top of the extrusion plate (30) is fixedly connected with three extrusion springs (31), the other ends of the extrusion springs (31) are fixedly connected to a stamping machine frame (48), a third limit groove (32) is formed in the side face of the extrusion plate (30), the bottom of the extrusion plate (30) is in contact with the top of the middle plate (13), bosses (33) are fixedly connected on both sides of the pulling rod (25), fourth notches are formed on both sides of the stamping machine frame (48), the other end of the pulling rod (25) is connected to the inner wall of the fourth notch in a sliding mode, the bottom of the pulling rod (25) is fixedly connected with a third spring (34), and the other end of the third spring (34) is fixedly connected to the inner wall of the fourth notch;

the stamping method comprises the following steps:

the method comprises the following steps: taking a middle plate (13) with proper thickness, inserting the middle plate (13) onto a limiting rod (12) on a chain (11), starting a motor (51), and bringing the middle plate (13) to a working area;

step two: the middle plate (13) enters a working area, is limited by a first limiting block (20) and a first limiting plate (21) in the left-right direction, and is limited by a spring in the up-down direction of the extrusion plate (30), and at the moment, the middle plate (13) is positioned in the working area and stops the motor (51) from running;

step three: start hydraulic cylinder (1) and drive shaping piece (4) and carry out stamping forming to panel, start hydraulic cylinder (1) upward movement after the punching press is accomplished, ejector pin (3) drive rope (17) and first bracing piece (29) motion through pulling pole (25), drive stripper plate (30) and first stopper (20) motion through rope (17) and first bracing piece (29), relieve the location of intermediate lamella (13) gradually, start motor (51) once more, take out work area with intermediate lamella (13) and alright more change intermediate lamella (13) of next thickness.

2. The pressing method of pressing a large-sized plate according to claim 1, wherein: the stamping machine is characterized in that a third supporting plate is fixedly connected to the side face of the stamping machine frame (48), a triggering block (35) is connected to the top of the third supporting plate in a sliding mode, the triggering block (35) penetrates through the side face of the stamping machine frame (48) and is connected to the step face (5) in a sliding mode, a first connecting rod (52) is fixedly connected to the side face of the triggering block (35), a fourth spring (36) is sleeved on the surface of the first connecting rod (52), two ends of the fourth spring (36) are fixedly connected to the triggering block (35) and the third supporting plate respectively, a strip-shaped plate (53) is fixedly connected to the end portion of the first connecting rod (52), a second connecting rod (37) is fixedly connected to the end portion of the strip-shaped plate (53), a top plate (38) is inserted into the second connecting rod (37), a circular table (39) is fixedly connected to the bottom, the top plate (38) runs through the workbench (481) and the rectangular plate (40) fixedly connected to the inner wall of the punching machine frame (48), the rectangular plate (40) is slidably connected to the inner wall of the rectangular groove, the cylindrical shell (41) fixedly connected to the bottom of the workbench (481), the circular table (39) is slidably connected to the inner wall of the cylindrical shell (41), the fifth spring (42) fixedly connected to the bottoms of the circular table (39) and the inner wall of the cylindrical shell (41) jointly, the strip-shaped groove (49) is formed in the side face of the middle plate (13), and the L-shaped pressing plate (50) is fixedly connected to the side face of the upper die plate (2).

3. The pressing method of a large-sized plate according to claim 2, wherein: six damping spring (43) of rectangular plate (40) top fixedly connected with, damping spring (43) other end fixedly connected with damping plate (44).

4. The pressing method of a large-sized plate according to claim 2, wherein: the bottom of the workbench (481) is fixedly connected with three fourth supporting plates (45).

5. The pressing method of pressing a large-sized plate according to claim 1, wherein: four shock absorption columns (46) are fixedly connected to the bottom of the upper template (2), four shock absorption holes are formed in the top of the lower template (6), and sixth springs (47) are fixedly connected to the inner walls of the shock absorption holes.

6. The pressing method of pressing a large-sized plate according to claim 1, wherein: the end part of the sliding groove is provided with a guide inclined plane (7).