CN115318957A

CN115318957A - Stamping die and using method thereof

Info

Publication number: CN115318957A
Application number: CN202211117674.0A
Authority: CN
Inventors: 崔凯宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-11-11

Abstract

The invention discloses a stamping die and a using method thereof, and relates to the technical field of stamping dies. According to the invention, through the common cooperation of the curve elastic plate, the buffering spring column and the telescopic rod, the upper forming die is ejected through the telescopic effect of the telescopic rod, the ejection of the forming die is not influenced through the special material setting of the soft shifting partition plate, and then the curve elastic plate is driven to rebound upwards through the elastic telescopic effect of the buffering spring column, so that the forming die is ejected out by the auxiliary telescopic rod.

Description

Stamping die and using method thereof

Technical Field

The invention relates to the technical field of stamping dies, in particular to a stamping die and a using method thereof.

Background

The punching is a forming processing method which applies external force to plates, strips, pipes, sectional materials and the like by a press machine and a die to enable the plates, the strips, the pipes, the sectional materials and the like to generate plastic deformation or separation so as to obtain workpieces with required shapes and sizes, the punching processing is to enable the plates to directly bear deformation force in the die by means of the power of special punching equipment so as to obtain a certain shape, the plates, the die and the equipment are three elements of the punching processing, the die used for punching is called a punching die, called a stamping die for short, the stamping die is very important in punching, the stamping die which does not meet the requirements is not available, the batch punching production is difficult to carry out, the stamping die is generally divided into an upper die and a lower die, and the existing stamping die generates large friction between the die and the plates in the die closing process of the upper die and the lower die in the long-term use, so that the die is easy to damage, and the punching die and the use method thereof are provided.

In the Chinese invention patent: for example, CN108189461A is a stamping die capable of adjusting pressure and a use method thereof, the lower side of the upper die base is provided with a lower die base, the upper side of the upper die base is provided with a hanging bracket, and the convenient installation of the upper die base is realized through the arranged hanging bracket, so as to save manpower and material resources and improve the work efficiency. The length of adjusting electric wire through intelligent control ware is rolled up in order to realize the regulatory action of upper die base, convenient and practical. The sealing rings are fixedly connected to two sides of the lower end of the upper die base, and the structure guarantees the sealing performance between the upper die base and the lower die base to guarantee normal operation. The air pump, the first vent pipe and the second vent pipe are matched with the pressure sensor to realize the pressure regulation function in the female die, and in addition, air can be pumped in the female die to form negative pressure in the female die, so that the punch forming of articles is facilitated. The pressure plate realizes the stamping function of articles, and the electric telescopic rod is adjusted according to the stamping forming scale of specific articles so as to realize the adjustment of the stamping scale.

The following problems exist in the prior art:

1. the stamping die in the prior art realizes the function of adjusting the upper die base when in use, but is difficult to convey a stamped plate and to assist in moving and positioning the plate, so that the stamping quality and efficiency are greatly influenced while the accuracy of the stamping forming die is low in the stamping process;

2. traditional stamping die can only take out the mould by limit punching press limit, has increaseed workshop personnel's working strength, is difficult to realize that a plurality of moulds are unified to be popped out after totalizing, has reduced the practicality and the validity of device.

Disclosure of Invention

The invention provides a stamping die and a using method thereof, which aim to solve the problems in the background technology.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

on the first aspect, a stamping die comprises a stamping die main body, wherein the stamping die main body comprises a workbench, a stamping groove is formed in the upper surface of the workbench, a conveying device is movably connected above the workbench, a plate positioning device is fixedly mounted on the upper surface of the workbench, a die quick-taking-out device is fixedly mounted in the middle of the plate positioning device, the die quick-taking-out device is arranged under the conveying device, the conveying device comprises a stamping mechanism and a plate conveying mechanism, the stamping mechanism comprises a supporting plate, the inner side surface of the supporting plate is fixedly connected with the outer surface of the workbench, the plate positioning device comprises an auxiliary positioning mechanism, the auxiliary positioning mechanism comprises a side positioning plate, the lower surface of the side positioning plate is fixedly connected with the upper surface of the workbench, the quick mold taking-out device comprises a containing mechanism and a top punching mechanism, the containing mechanism comprises a lower die groove, the lower surface of the lower die groove is fixedly connected with the inner surface of the punching groove, the punching mechanism, the plate conveying mechanism, the auxiliary positioning mechanism and the common cooperation between the containing mechanism and the top punching mechanism are adopted, the problem that the plate which is difficult to punch is solved, the plate which is difficult to punch is difficult to carry out auxiliary movement and positioning on the plate, the quality and the efficiency of punching are greatly influenced when the accuracy of the stamping formed die is low in the punching process is caused, in addition, the traditional punching die can only take out the die while punching edges, the working strength of workshop personnel is increased, the phenomenon that a plurality of dies are popped out uniformly after being accumulated is difficult to realize, and the practicability and the effectiveness of the device are reduced.

The technical scheme of the invention is further improved as follows: the utility model discloses a punching press operation, including the backup pad, the upper end outer fixed surface of backup pad has fixed diaphragm, the last fixed surface of fixed diaphragm installs the pneumatic cylinder, the output fixed mounting of pneumatic cylinder has hydraulic push rod, through the cooperation of backup pad and fixed diaphragm, plays the effect of support to the pneumatic cylinder, ensures punching press operation normal operating.

The technical scheme of the invention is further improved as follows: the upper surface of the hydraulic push rod is fixedly connected with the lower surface of the hydraulic cylinder, an upper die is fixedly mounted on the outer surface of one end, away from the hydraulic cylinder, of the hydraulic push rod, and the upper die is matched with the hydraulic push rod to perform downward stamping operation.

The technical scheme of the invention is further improved as follows: the upper surface fixed mounting of workstation has the transport platform, the upper surface swing joint who carries the platform has the conveying roller, through carrying platform and conveying roller to mutually support, carries the panel that needs stamping forming, has promoted the efficiency of punching press.

The technical scheme of the invention is further improved as follows: the medial surface of side locating plate is equipped with flexible bullet strip admittedly, the other end of flexible bullet strip articulates there is the arc stripper plate, the lower surface of arc stripper plate and the surperficial swing joint of panel, one side of arc stripper plate is provided with supplementary removal gyro wheel, cooperates jointly through between side locating plate, flexible bullet strip and the arc stripper plate, fixes a position and supplementary removal to panel, avoids squinting when carrying, has strengthened the wholeness of device.

The technical scheme of the invention is further improved as follows: the lower surface of die cavity has seted up the cushion chamber down, the inner chamber bottom surface fixed mounting in cushion chamber has the telescopic link, the other end swing joint of telescopic link has forming die, forming die's surface and the inner wall sliding connection of die cavity down, through the setting of telescopic link, the forming die who is convenient for carry out quick ejecting to punching forming, has improved work efficiency.

The technical scheme of the invention is further improved as follows: the inner wall of die cavity articulates has soft baffle of stirring down, the lower surface that the baffle was stirred in soft is fixed mounting respectively has the bullet strip that resets, the bullet strip that resets is kept away from soft one end of stirring the baffle respectively with forming die's surface swing joint, stir the baffle through soft and the bullet strip that resets mutually support, carries out the separation to the mould that the steel punching press got off, avoids the high temperature of punching press to lead to gluing glutinous condition.

The technical scheme of the invention is further improved as follows: the utility model discloses a device, including the buffering chamber, the inner chamber bottom surface of buffering chamber, the outer surface swing joint of buffering spring post has the curve to play the board, the outer surface of curve play the board respectively with forming die's lower surface and the inner chamber bottom surface swing joint of buffering chamber, through the flexible effect of the elasticity of buffering spring post, drive the curve and play the board and upwards kick-back, avoid the condition that the slope appears when going up the mould and carry out the punching press, strengthened the overall stability effect of device.

In a second aspect, a method for using a stamping die includes the following steps:

conveying a plate through a conveying roller, conveying the plate to the position below a stamping die, setting preset time, and slowly conveying the plate;

secondly, the plate is clamped in an auxiliary manner by utilizing the positioning and conveying devices on the side edges, and the normal conveying of the plate is not influenced;

thirdly, the upper die is punched downwards, the upper die falls into a lower die groove while the die is punched, and the lower die groove is provided with an accommodating cavity with a certain height for accommodating the die;

and step four, when the forming mold in the lower mold cavity reaches a set preset value, uniformly ejecting the forming mold by an elastic mechanism at the bottom, and then taking out and collecting the forming mold.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:

1. the invention provides a stamping die and a using method thereof, which adopt the common coordination among a stamping mechanism, a plate conveying mechanism, an auxiliary positioning mechanism, an accommodating mechanism and a top stamping mechanism, and solve the problems that the stamped plate is difficult to convey and the plate is difficult to be moved and positioned in an auxiliary way, so that the precision of a stamping forming die is not high in the stamping process, and the stamping quality and efficiency are greatly influenced.

2. The invention provides a stamping die and a using method thereof, wherein a stamping mechanism and a plate conveying mechanism are jointly matched, a hydraulic cylinder is supported through the matching of a supporting plate and a fixed transverse plate, when the hydraulic cylinder is opened, a hydraulic push rod is pushed downwards, so that an upper die integrally stamps downwards, and plates needing stamping forming are conveyed through the mutual matching of a conveying table and a conveying roller, so that the working strength of workshop personnel is greatly reduced, and the stamping efficiency is improved.

3. The invention provides a stamping die and a use method thereof, wherein a side positioning plate, an auxiliary moving roller, a telescopic elastic strip and an arc-shaped extrusion plate are matched together, the side positioning plate and the telescopic elastic strip are matched with each other to position a plate, so that the plate is prevented from being deviated during conveying, the auxiliary moving roller is used for auxiliary conveying of the plate, the telescopic elastic strip is extruded during conveying to generate reverse extrusion elastic force, the arc-shaped extrusion plate is rubbed with the surface of the plate to generate downward extrusion force, the effect of clamping and positioning the plate is improved, and by the arrangement, the conveying effect of the plate is not influenced while the plate is positioned, and the integrity of the device is enhanced.

4. The invention provides a stamping die and a use method thereof, wherein a lower die groove, a forming die, a soft shifting baffle and a reset elastic strip are matched together, the die formed by stamping a plate material is stamped into the lower die groove by stamping an upper die downwards, the soft shifting baffle and the reset elastic strip are matched with each other by successive stamping, the forming die is accommodated into a buffer cavity, and the die stamped from steel can be blocked by the arrangement, so that the sticking condition caused by overhigh stamping temperature is avoided, and the practicability of the device is improved.

5. The invention provides a stamping die and a using method thereof, wherein a curve elastic plate, a buffering spring post and a telescopic rod are matched together, a forming die above is ejected through the telescopic effect of the telescopic rod, the ejection of the forming die is not influenced through the special material setting of a soft shifting partition plate, and the curve elastic plate is driven to rebound upwards through the elastic telescopic effect of the buffering spring post to assist the telescopic rod to eject the forming die.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the conveyor of the present invention;

FIG. 3 is a schematic bottom perspective view of the plate positioning device of the present invention;

FIG. 4 is a schematic perspective sectional view of the plate positioning device of the present invention;

FIG. 5 is a schematic perspective sectional view of the mold quick-release apparatus of the present invention;

FIG. 6 is a schematic perspective view of the ejection mechanism of the present invention;

FIG. 7 is a flow chart of the present invention.

In the figure: 1. a stamping die main body; 2. a conveying device; 3. a plate positioning device; 4. a mold quick removal device; 11. a work table; 21. a stamping mechanism; 211. a support plate; 212. fixing the transverse plate; 213. a hydraulic cylinder; 214. a hydraulic push rod; 215. an upper die; 22. a plate conveying mechanism; 221. a conveying table; 222. a conveying roller; 223. punching a groove; 31. an auxiliary positioning mechanism; 311. side edge positioning plates; 312. auxiliary moving rollers; 313. a telescopic elastic strip; 314. an arc-shaped extrusion plate; 41. a housing mechanism; 411. a lower die cavity; 412. a buffer chamber; 413. forming a mold; 414. a soft shifting partition plate; 415. resetting the elastic strip; 416. a telescopic rod; 42. a top punching mechanism; 421. a curved spring plate; 422. and a buffer spring post.

Detailed Description

The present invention is further illustrated in detail below with reference to examples:

example 1

As shown in fig. 1-7, the present invention provides a stamping die, which comprises a stamping die main body 1, wherein the stamping die main body 1 comprises a workbench 11, a stamping groove 223 is formed on the upper surface of the workbench 11, a conveying device 2 is movably connected above the workbench 11, a plate positioning device 3 is fixedly installed on the upper surface of the workbench 11, a die quick-taking out device 4 is fixedly installed in the middle of the plate positioning device 3, the die quick-taking out device 4 is arranged under the conveying device 2, the conveying device 2 comprises a stamping mechanism 21 and a plate conveying mechanism 22, the stamping mechanism 21 comprises a supporting plate 211, the inner side surface of the supporting plate 211 is fixedly connected with the outer surface of the workbench 11, the plate positioning device 3 comprises an auxiliary positioning mechanism 31, the auxiliary positioning mechanism 31 comprises a side positioning plate 311, the lower surface of the side positioning plate 311 is fixedly connected with the upper surface of the workbench 11, the mold fast-taking-out device 4 comprises an accommodating mechanism 41 and a punching mechanism 42, the accommodating mechanism 41 comprises a lower mold slot 411, the lower surface of the lower mold slot 411 is fixedly connected with the inner surface of a punching slot 223, the outer surface of the upper end of a supporting plate 211 is fixedly provided with a fixing transverse plate 212, the upper surface of the fixing transverse plate 212 is fixedly provided with a hydraulic cylinder 213, the output end of the hydraulic cylinder 213 is fixedly provided with a hydraulic push rod 214, the upper surface of the hydraulic push rod 214 is fixedly connected with the lower surface of the hydraulic cylinder 213, the outer surface of one end of the hydraulic push rod 214 far away from the hydraulic cylinder 213 is fixedly provided with an upper mold 215, the hydraulic cylinder 213 is supported through the matching of the supporting plate 211 and the fixing transverse plate 212, when the hydraulic cylinder 213 is opened, the hydraulic push rod 214 pushes downwards to enable the upper mold 215 to be integrally punched downwards, and then through the matching of a conveying platform 221 and a conveying roller 222, the plate needing punch forming is conveyed, the working strength of workshop personnel is greatly reduced, and the stamping efficiency is improved.

Example 2

As shown in fig. 1 to 7, on the basis of embodiment 1, the present invention provides a technical solution: preferably, a conveying table 221 is fixedly installed on the upper surface of the workbench 11, a conveying roller 222 is movably connected to the upper surface of the conveying table 221, a telescopic elastic strip 313 is fixedly installed on the inner side surface of the side positioning plate 311, the other end of the telescopic elastic strip 313 is hinged to an arc-shaped extrusion plate 314, the lower surface of the arc-shaped extrusion plate 314 is movably connected to the surface of the plate, an auxiliary moving roller 312 is arranged on one side of the arc-shaped extrusion plate 314, the side positioning plate 311 and the telescopic elastic strip 313 are matched with each other to position the plate, so that the plate is prevented from being deviated during conveying, the auxiliary moving roller 312 is used for auxiliary conveying of the plate, the telescopic elastic strip 313 is extruded during conveying, a reverse extrusion elastic force is generated, the arc-shaped extrusion plate 314 is rubbed with the surface of the plate, a downward extrusion force is generated, the clamping and positioning effects on the plate are improved, and by the arrangement, the conveying effect on the plate is not influenced while the positioning of the plate, and the integrity of the device is enhanced.

Example 3

As shown in fig. 1 to 7, on the basis of embodiment 1, the present invention provides a technical solution: preferably, a buffer cavity 412 is formed on the lower surface of the lower mold cavity 411, an expansion link 416 is fixedly mounted on the bottom surface of the inner cavity of the buffer cavity 412, a forming mold 413 is movably connected to the other end of the expansion link 416, the outer surface of the forming mold 413 is slidably connected to the inner wall of the lower mold cavity 411, a soft toggle partition 414 is hinged to the inner wall of the lower mold cavity 411, return elastic strips 415 are respectively and fixedly mounted on the lower surfaces of the soft toggle partition 414, ends of the return elastic strips 415 away from the soft toggle partition 414 are respectively and movably connected to the outer surface of the forming mold 413, buffer spring columns 422 are fixedly mounted on the bottom surface of the inner cavity of the buffer cavity 412, curved elastic plates 421 are movably connected to the outer surfaces of the buffer spring columns 422, the outer surfaces of the curved elastic plates 421 are respectively and movably connected to the lower surface of the forming mold 413 and the bottom surface of the inner cavity of the buffer cavity 412, the upper die 215 is used for punching downwards, the die for punching and forming the plate is punched into the lower die groove 411, through successive punching, the soft toggle partition 414 and the reset elastic strip 415 are mutually matched, the forming die 413 is accommodated in the buffer cavity 412, and through the arrangement, the die stamped by the steel can be blocked, the sticking condition caused by overhigh stamping temperature is avoided, the practicability of the device is improved, in addition, through the expansion effect of the expansion rod 416, the upper forming die 413 is ejected, the ejection of the forming die 413 is not influenced by the special material of the soft shifting partition plate 414, the curve elastic plate 421 is driven to rebound upwards by the elastic expansion effect of the buffer spring column 422, the auxiliary expansion link 416 ejects the forming die 413, simultaneously, the curve springboard 421 also has the effect of supporting the forming die 413, so that the situation of inclination when the upper die is stamped is avoided, and the overall stability effect of the device is enhanced.

Example 4

As shown in fig. 1 to 7, on the basis of embodiments 1 to 3, the present invention further provides a method for using a stamping die, which includes the following steps:

firstly, conveying the plate through a conveying roller 222, conveying the plate to the position below a stamping die, setting preset time, and slowly conveying the plate;

thirdly, the upper die 215 is punched downwards, the upper die falls into the lower die groove 411 when the die is punched, and the lower die groove 411 is provided with an accommodating cavity with a certain height for accommodating the die;

and step four, when the forming mold in the lower mold cavity 411 reaches a preset value, the elastic members at the bottom uniformly eject the forming mold, and then the forming mold is taken out and collected.

The working principle of the stamping die and the method for using the stamping die will be described in detail below.

As shown in fig. 1-7, in operation, firstly, workshop staff cut the punched plate into the same size, then place the plate above the conveying roller 222 to convey the plate, through the cooperation of the supporting plate 211 and the fixed transverse plate 212, support the hydraulic cylinder 213, when the hydraulic cylinder 213 is opened, the hydraulic push rod 214 pushes downwards, so that the upper die 215 is wholly punched downwards, then through the cooperation of the conveying table 221 and the conveying roller 222, the plate to be punched is conveyed, the working strength of workshop staff is greatly reduced, furthermore, through the cooperation of the side positioning plate 311 and the telescopic elastic strip 313, the plate is positioned, avoiding deviation in conveying, the auxiliary conveying of the plate is carried out by using the auxiliary moving roller 312, and when in conveying, the telescopic elastic strip 313 is extruded to generate a reverse extrusion elastic force, and the arc extrusion plate 314 rubs with the surface of the plate to generate downward extrusion force, so as to improve the clamping and positioning effect on the plate, through the arrangement, the plate can be positioned, meanwhile, the conveying effect on the plate is not influenced, the integrity of the device is enhanced, in addition, through the downward stamping of the upper die 215, the die formed by stamping the plate is stamped into the lower die groove 411, through the successive stamping, the soft toggle partition plate 414 and the reset elastic strip 415 are mutually matched, the forming die 413 is accommodated into the buffer cavity 412, and through the arrangement, the die stamped by steel can be blocked, so that a plurality of forming dies 413 are stacked, when the preset value is reached, through opening the telescopic rod 416, the upper forming die 413 is ejected by utilizing the telescopic effect, through toggling the special material arrangement of the soft partition plate 414, do not influence ejecting of forming die 413, the flexible effect of rethread buffering spring post 422 drives curve bullet board 421 and upwards kick-backs, and auxiliary telescopic rod 416 is ejecting with forming die 413, and simultaneously, curve bullet board 421 also possess the effect that supports forming die 413, avoids the condition that the slope appears when last mould carries out the punching press, has strengthened the overall stability effect of device.

The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.

Claims

1. A stamping die, includes stamping die main part (1), its characterized in that: the stamping die main body (1) comprises a workbench (11), a stamping groove (223) is formed in the upper surface of the workbench (11), a conveying device (2) is movably connected above the workbench (11), the upper surface of the workbench (11) is fixedly provided with a plate positioning device (3), a mould rapid taking-out device (4) is fixedly arranged in the middle of the plate positioning device (3), the mould rapid-taking-out device (4) is arranged right below the conveying device (2), the conveying device (2) comprises a stamping mechanism (21) and a plate conveying mechanism (22), the stamping mechanism (21) comprises a support plate (211), the inner side surface of the support plate (211) is fixedly connected with the outer surface of the workbench (11), the plate positioning device (3) comprises an auxiliary positioning mechanism (31), the auxiliary positioning mechanism (31) comprises a side positioning plate (311), the lower surface of the side positioning plate (311) is fixedly connected with the upper surface of the workbench (11), the quick mold taking-out device (4) comprises an accommodating mechanism (41) and a top punching mechanism (42), the containing mechanism (41) comprises a lower die cavity (411), and the lower surface of the lower die cavity (411) is fixedly connected with the inner surface of the stamping groove (223).

2. A stamping die as claimed in claim 1, wherein: the upper end outer surface fixed mounting of backup pad (211) has fixed diaphragm (212), the last fixed surface of fixed diaphragm (212) installs pneumatic cylinder (213), the output fixed mounting of pneumatic cylinder (213) has hydraulic push rod (214).

3. A stamping die as claimed in claim 2, wherein: the upper surface of hydraulic push rod (214) is connected with the lower surface fixed of pneumatic cylinder (213), one end surface fixed mounting that hydraulic push rod (214) kept away from pneumatic cylinder (213) has last mould (215).

4. A stamping die as claimed in claim 1, wherein: a conveying platform (221) is fixedly mounted on the upper surface of the workbench (11), and a conveying roller (222) is movably connected to the upper surface of the conveying platform (221).

5. A stamping die as claimed in claim 1, wherein: the utility model discloses a side edge locating plate, including side locating plate (311), the medial surface of side locating plate (311) is installed admittedly and is stretched out flexible bullet strip (313), the other end of flexible bullet strip (313) articulates there is arc stripper plate (314), the lower surface of arc stripper plate (314) and the surperficial swing joint of panel, one side of arc stripper plate (314) is provided with supplementary removal gyro wheel (312).

6. A stamping die as claimed in claim 1, wherein: the lower die cavity (411) is provided with a buffer cavity (412) on the lower surface for accommodating the stamping part, an expansion rod (416) is fixedly mounted on the bottom surface of an inner cavity of the buffer cavity (412), the other end of the expansion rod (416) is movably connected with a forming die (413), and the outer surface of the forming die (413) is in sliding connection with the inner wall of the lower die cavity (411).

7. The stamping die of claim 6, wherein: the inner wall of lower die cavity (411) articulates there is soft baffle (414) of stirring, the lower surface that soft baffle (414) were stirred respectively fixed mounting have bullet strip (415) that resets, the one end that soft baffle (414) were stirred in bullet strip (415) that resets is kept away from respectively with the surface swing joint of forming die (413).

8. The stamping die of claim 6, wherein: the inner chamber bottom surface fixed mounting of cushion chamber (412) has buffer spring post (422), the surface swing joint of buffer spring post (422) has curve bullet board (421), the surface of curve bullet board (421) respectively with the lower surface of forming die (413) and the inner chamber bottom surface swing joint of cushion chamber (412).

9. A method for using a press die, which is realized based on a press die according to any one of claims 1 to 8, characterized in that: the use method of the stamping die comprises the following steps:

firstly, conveying a plate through a conveying roller (222), conveying the plate to the position below a stamping die, setting preset time, and slowly conveying the plate;

secondly, the plate is clamped in an auxiliary manner by utilizing the positioning and conveying device on the side edge, and the normal conveying of the plate is not influenced;

thirdly, the upper die (215) is punched downwards, the upper die falls into a lower die groove (411) when the die is punched, and the lower die groove (411) is provided with an accommodating cavity with a certain height to accommodate the die;

and step four, when the forming die in the lower die cavity (411) reaches a preset value, the elastic members at the bottom uniformly eject the forming die, and then the forming die is taken out and collected.