CN112742946A

CN112742946A - Metal stamping robot workstation and stamping method thereof

Info

Publication number: CN112742946A
Application number: CN202110092408.6A
Authority: CN
Inventors: 龚英
Original assignee: Beijing Bochuang Shuofang Technology Co ltd
Current assignee: Beijing Bochuang Shuofang Technology Co ltd
Priority date: 2021-01-24
Filing date: 2021-01-24
Publication date: 2021-05-04

Abstract

The invention relates to the technical field of metal stamping, and discloses a metal stamping robot workstation and a stamping method thereof, wherein the upper side of a base is provided with a vertical groove, a bottom plate is movably connected in the vertical groove, the upper side of the vertical groove is fixedly provided with a pressure spring a, the upper end of the pressure spring a is fixedly provided with a telescopic column, the upper side of the base is provided with a die pressing frame, the die pressing frame is movably connected with a bottom template, the lower side of the bottom template is provided with a connecting groove, the telescopic column is movably connected with the connecting groove, the bottom template moves downwards so as to drive the telescopic column to move downwards, thus, pressure can be applied to the pressure spring a, so that upward force can be applied to the bottom template through the reaction force of the pressure spring a, the bottom template can be matched with a stamping block to enhance the stamping effect on a metal sheet, after stamping is finished, the stamping block moves upwards, the resilience of the pressure spring a, therefore, the punched metal sheet is ejected out of the film pressing frame, and a user can take the metal sheet conveniently.

Description

Metal stamping robot workstation and stamping method thereof

Technical Field

The invention relates to the technical field of metal stamping, in particular to a metal stamping robot workstation and a stamping method thereof.

Background

The gasket is refined from high-precision and high-hardness sheet materials, is usually used for adjustment and measurement of precision dies or precision hardware, or is used as a cushion block to form a precision gasket, sometimes called a die gasket or a precision clearance sheet, and is generally manufactured by stamping through a stamping machine, feeding a metal sheet to the lower part of the stamping machine and pressing under the action of the die.

The sheetmetal carries out the punching press in the punching press template when carrying out the punching press to after the sheetmetal punching press is good, can waste time and energy very much when taking out with the good sheetmetal of punching press from the punching press template with the hand, cut the user hand easily simultaneously, and take behind wearing gloves, can influence user's sense of touch, thereby inconvenient user takes the good sheetmetal of punching press.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a metal stamping robot workstation and a stamping method thereof, which have the advantages that a stamped metal sheet is ejected out of a film pressing frame, so that a user can conveniently take the metal sheet, and the problem that the stamped metal sheet is taken out of a stamping template by hand after the metal sheet is stamped, time and labor are wasted when the stamped metal sheet is taken out of the stamping template by hand after the metal sheet is stamped, the hand of the user is easily cut, and the touch feeling of the user is influenced when the user wears gloves to take the metal sheet is solved.

(II) technical scheme

In order to realize the purpose that the punched metal sheet is ejected out of the film pressing frame, so that a user can conveniently take the metal sheet, the invention provides the following technical scheme: the utility model provides a metal stamping robot workstation and punching press method thereof, the on-line screen storage device comprises a base, the upside fixed mounting of base has the backup pad, the left side fixed mounting of backup pad has the mounting panel, the downside fixed mounting of mounting panel has the punching press arm, the downside fixed mounting of punching press arm has the punching press piece, perpendicular groove has been seted up to the upside of base, it has the bottom plate to erect inslot swing joint, upside fixed mounting have pressure spring an, pressure spring an's upper end fixed mounting has flexible post, the die frame has been placed to the upside of base, swing joint has the die block board in the die block frame, the spread groove has been seted up to the downside of die block.

Preferably, the equal fixed mounting in the left and right sides of die-pressing frame has the fixed block, and the fixed slot has all been seted up to two fixed block upsides, and equal swing joint has the support bar in two fixed slots, two support bars all with base upside fixed connection.

Preferably, two the draw-in groove has all been seted up to one side that the support bar is close to each other, and the equal fixed mounting of a wall that two draw-in grooves kept away from each other has pressure spring b, and the equal fixed mounting of one end that two pressure spring b are close to each other has trapezoidal piece, and the downside of two trapezoidal pieces is laminated in two fixed block upsides respectively.

Preferably, the lower wall of the vertical groove is provided with a transverse groove, and the left wall and the right wall of the transverse groove are both provided with device grooves.

Preferably, the lower wall of the vertical and horizontal groove is provided with a movable column, the upper end of the movable column is fixedly connected with the bottom plate, and a movable plate is fixedly sleeved on the movable column.

Preferably, the rear wall fixed mounting of horizontal groove has two support columns, and the activity strip is cup jointed in the equal activity on two support columns, and two activity strips all set up in the fly leaf below.

Preferably, two the equal swing joint of device inslot has the holding down plate, and two holding down plates set up respectively in two activity strip tops.

Preferably, two equal fixed mounting of the upside of holding down plate has the lower compression post, and two lower compression posts are the activity respectively and run through the upper wall in two device grooves, and two lower compression posts are the activity respectively and run through two walls about the die frame, and the equal fixed mounting in the left and right sides of punching press arm has the pressure board, and two pressure boards set up respectively in two lower compression post tops.

Preferably, the spacing groove has been seted up to the downside of flexible post, and spacing inslot swing joint has spacing post, and the lower extreme and the activity strip fixed connection of spacing post, the spout has all been seted up to the inner wall about the spacing groove, and the upper end fixed mounting of spacing post has spacing strip, spacing strip and two spout swing joint.

Preferably, the stamping method of the metal stamping robot workstation is characterized in that:

the first step is as follows: placing a metal sheet to be punched on the upper side of the bottom template, starting the punching mechanical arm to drive the punching block to move downwards, so that the metal sheet can be punched, the punching block moves upwards, and the rebounding of the pressure spring a can drive the punched metal sheet to move upwards;

the second step is that: the two supporting bars and the two fixing blocks can prevent the die pressing frame from shaking and shifting when the device punches the metal sheet, so that the stability of the device during punching can be kept;

the third step: the two trapezoidal blocks are moved towards the direction away from each other, so that the die pressing frame can be moved upwards, the die pressing frame can be taken down and replaced by a different die pressing frame, and the fixing grooves on the two fixing blocks are respectively aligned with the two support bars to move downwards;

the fourth step: the support of two support columns, the half section that two activity strips are close to each other drive the fly leaf rebound to drive the movable column rebound, just so can drive the bottom plate rebound, thereby exert pressure to compression spring a, just so can improve compression spring a to the pressure that the flexible post was exerted.

(III) advantageous effects

Compared with the prior art, the invention provides a metal stamping robot workstation and a stamping method thereof, which have the following beneficial effects:

1. this metal stamping robot workstation and punching press method thereof, place the sheetmetal through needing the punching press at the die block upside, restart punching press arm drives the punching press piece downstream, thereby can punch the sheetmetal, so will drive the die block downstream, thereby can drive flexible post downstream, just so can exert pressure to compression spring a, thereby can exert ascending power to the die block through compression spring a's reaction force, the die block just can cooperate the punching press piece to strengthen the sheetmetal punching press effect like this, after the punching press is accomplished, the punching press piece rebound, compression spring an's resilience just can drive the good sheetmetal rebound of punching press, thereby ejecting from the press mold frame with the good sheetmetal of punching press, convenience of customers takes like this.

2. According to the metal stamping robot workstation and the stamping method thereof, the die pressing frame can be placed without shaking and shifting when the metal sheet is stamped by the metal stamping robot workstation through the two supporting bars and the two fixing blocks, so that the stability of the metal stamping robot workstation can be kept during stamping, and the practicability of the metal stamping robot workstation can be improved.

3. This metal stamping robot workstation and stamping method thereof, through removing two trapezoidal pieces to the direction of keeping away from each other, thereby can upwards move the die pressing frame, just so can take off the die pressing frame with trading different die pressing frames, aim at two support bar downstream respectively with the fixed slot on two fixed blocks, contact the inclined plane of two trapezoidal pieces respectively when two fixed blocks, will drive two trapezoidal pieces respectively and remove to two draw-in grooves respectively, when two trapezoidal pieces are in two fixed block tops respectively, two pressure spring b's resilience will drive two trapezoidal pieces respectively and remove to the direction that is close to each other respectively, thereby the downside of two trapezoidal pieces is respectively behind the laminating of two fixed block upsides, just can fix the die pressing frame, thereby convenience of customers is with trading the die pressing frame.

4. This metal stamping robot workstation and stamping method thereof, through punching mechanical arm downstream, will drive two press plates downstream, thereby continue downstream after contacting two lower compression posts, will drive two lower compression posts downstream respectively, thereby drive two lower compression plates downstream respectively, just so can drive the half section downstream that two activity strips kept away from each other respectively, just so can pass through the support of two support columns, the half section that two activity strips are close to each other drives the fly leaf rebound, thereby drive the activity post rebound, just so can drive the bottom plate rebound, thereby exert pressure to compression spring a, just so can improve the pressure that compression spring a applyed to flexible post, thereby can improve the sheetmetal stamping effect on the die block board.

5. According to the metal stamping robot workstation and the stamping method thereof, the stability of the telescopic column can be improved through the limiting groove and the limiting column, and the telescopic column can be prevented from falling off through the two sliding grooves and the two limiting strips, so that the using effect of the device is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of how the present invention is constructed;

FIG. 2 is an enlarged partial view of FIG. 1A;

FIG. 3 is a schematic top cross-sectional view of the present invention;

FIG. 4 is a schematic front perspective view of the present invention;

fig. 5 is a schematic front perspective view of the die frame of fig. 1 according to the present invention.

In the figure: 1. a base; 2. a pressure spring a; 3. a limiting column; 4. a limiting strip; 5. a chute; 6. a limiting groove; 7. a bottom template; 8. connecting grooves; 9. a support plate; 10. mounting a plate; 11. stamping a mechanical arm; 12. a pressing plate; 13. stamping the blocks; 15. pressing the column; 16. a lower pressing plate; 17. a device slot; 18. a transverse groove; 19. a support pillar; 20. a movable bar; 21. a movable plate; 22. a movable post; 23. a base plate; 24. a vertical slot; 25. pressing the mold frame; 26. a supporting strip; 27. a trapezoidal block; 28. a card slot; 29. a pressure spring b; 30. a fixed block; 31. fixing grooves; 32. a telescopic column.

Detailed Description

The present invention will be described in further detail with reference to the drawings, wherein like elements are designated by like reference numerals, wherein the terms "front", "rear", "left", "right", "upper" and "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular element.

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. 1-5, the present invention provides a technical solution: a metal stamping robot workstation and a stamping method thereof comprise a base 1, wherein a supporting plate 9 is fixedly arranged on the upper side of the base 1, a mounting plate 10 is fixedly arranged on the left side of the supporting plate 9, a stamping mechanical arm 11 is fixedly arranged on the lower side of the mounting plate 10, a stamping block 13 is fixedly arranged on the lower side of the stamping mechanical arm 11, a vertical groove 24 is formed in the upper side of the base 1, a bottom plate 23 is movably connected in the vertical groove 24, a pressure spring a2 is fixedly arranged on the upper side of the vertical groove, a telescopic column 32 is fixedly arranged at the upper end of the pressure spring a2, a stamping die frame 25 is arranged on the upper side of the base 1, a bottom die plate 7 is movably connected in the stamping die frame 25, a connecting groove 8 is formed in the lower side of the bottom die plate 7, the telescopic column 32 is movably connected with the connecting groove 8, a metal sheet to be stamped is placed on, will drive the bottom die plate 7 downstream like this, thereby can drive flexible post 32 downstream, just so can exert pressure to pressure spring a2, thereby can exert ascending power to bottom die plate 7 through pressure spring a 2's reaction force, bottom die plate 7 just can cooperate punching press piece 13 to strengthen the sheetmetal punching press effect like this, after the punching press is accomplished, punching press piece 13 rebound, the good sheetmetal rebound of punching press just can be driven to pressure spring a2, thereby ejecting from pressing mold frame 25 with the good sheetmetal of punching press, convenience of customers takes like this.

The equal fixed mounting in the left and right sides of pressure die frame 25 has fixed block 30, and fixed slot 31 has all been seted up to two fixed block 30 upsides, and equal swing joint has support bar 26 in two fixed slots 31, and two support bars 26 all with base 1 upside fixed connection, through two support bars 26 and two fixed blocks 30, can place pressure die frame 25 when device punching press sheetmetal and can not take place to rock the displacement to the stability of device when can keeping the punching press, just so can improve the practicality of device.

One side of each of the two support bars 26 close to each other is provided with a clamping groove 28, one wall of each of the two clamping grooves 28 far away from each other is fixedly provided with a pressure spring b29, one end of each of the two pressure springs b29 close to each other is fixedly provided with a trapezoidal block 27, the lower sides of the two trapezoidal blocks 27 are respectively attached to the upper sides of the two fixing blocks 30, the two trapezoidal blocks 27 are moved in the direction far away from each other, so that the two trapezoidal blocks 25 can be moved upwards, the pressing frames 25 can be taken down to replace the different pressing frames 25, the fixing grooves 31 on the two fixing blocks 30 are respectively aligned with the two support bars 26 to move downwards, when the two fixing blocks 30 are respectively contacted with the inclined surfaces of the two trapezoidal blocks 27, the two trapezoidal blocks 27 are respectively driven to move in the two clamping grooves 28, when the two trapezoidal blocks 27 are respectively positioned above the two fixing blocks 30, the resilience of the two pressure springs b29 can respectively drive the two trapezoidal, thereby the downside of two trapezoidal pieces 27 just can fix die-pressing frame 25 respectively in the laminating back of two fixed block 30 upsides to convenience of customers is with trading die-pressing frame 25.

The lower wall of the vertical groove 24 is provided with a transverse groove 18, the left wall and the right wall of the transverse groove 18 are both provided with device grooves 17, the lower wall of the vertical transverse groove 18 is provided with a movable column 22, the upper end of the movable column 22 is fixedly connected with a bottom plate 23, the movable column 22 is fixedly sleeved with a movable plate 21, the rear wall of the transverse groove 18 is fixedly provided with two support columns 19, the two support columns 19 are movably sleeved with movable strips 20, the two movable strips 20 are arranged below the movable plate 21, the two device grooves 17 are both movably connected with lower press plates 16, the two lower press plates 16 are respectively arranged above the two movable strips 20, the upper sides of the two lower press plates 16 are both fixedly provided with lower press columns 15, the two lower press columns 15 respectively and movably penetrate through the upper walls of the two device grooves 17, the two lower press columns 15 respectively and movably penetrate the left wall and the right wall of a press frame 25, the left side and the right side of the stamping mechanical arm 11 are both fixedly provided with press plates, the stamping mechanical arm 11 moves downwards to drive the two pressing plates 12 to move downwards, so that when the stamping mechanical arm continues to move downwards after contacting the two lower pressing columns 15, the stamping mechanical arm respectively drives the two lower pressing columns 15 to move downwards, so that the two lower pressing plates 16 are respectively driven to move downwards, so that the two half sections, away from each other, of the movable strips 20 can be respectively driven to move downwards, so that the half sections, close to each other, of the two movable strips 20 can drive the movable plate 21 to move upwards, so that the movable columns 22 are driven to move upwards, so that the bottom plate 23 can be driven to move upwards, so that pressure is applied to the pressure spring a2, and therefore the pressure applied to the telescopic columns 32 by the pressure spring a2 can be improved, and the stamping effect of metal sheets on the bottom die plate 12 can be improved.

Spacing groove 6 has been seted up to flexible post 32's downside, swing joint has spacing post 3 in the spacing groove 6, the lower extreme and the 20 fixed connection of activity strip of spacing post 3, spout 5 has all been seted up to the inner wall about spacing groove 6, the upper end fixed mounting of spacing post 3 has spacing 4, spacing 4 and two 5 swing joint of spout, can improve flexible post 32's stability through spacing groove 6 and spacing post 3, can prevent flexible post 32 through two spout 5 and two spacing 4 and take place to drop, thereby improve device's result of use.

A stamping method of a metal stamping robot workstation is characterized in that:

the first step is as follows: placing a metal sheet to be punched on the upper side of the bottom template, starting the punching mechanical arm 11 to drive the punching block 13 to move downwards, so that the metal sheet can be punched, the punching block 13 moves upwards, and the punched metal sheet can be driven to move upwards by the resilience of the pressure spring a 2;

the second step is that: the two supporting bars 26 and the two fixing blocks 30 can be used for placing the die pressing frame 25 without shaking and shifting when the device punches the metal sheet, so that the stability of the device during punching can be kept;

the third step: the two trapezoidal blocks 27 are moved away from each other, so that the pressing mold frame 25 can be moved upwards, the pressing mold frame 25 can be taken down and replaced by a different pressing mold frame 25, and the fixing grooves 31 on the two fixing blocks 30 are respectively aligned with the two supporting bars 26 and move downwards;

the fourth step: the half sections of the two support columns 19, which are close to each other, of the two movable bars 20 drive the movable plate 21 to move upwards, so as to drive the movable column 22 to move upwards, so as to drive the bottom plate 23 to move upwards, so as to apply pressure to the pressure spring a2, so as to increase the pressure applied by the pressure spring a2 to the telescopic column 32.

In use, the first step: place at the die block upside through the sheetmetal that will need the punching press, restart punching press arm 11 drives punching press piece 13 downstream, thereby can punch the sheetmetal, will drive die block 7 downstream like this, thereby can drive flexible post 32 downstream, just so can exert pressure to pressure spring a2, thereby can exert ascending power to die block 7 through pressure spring a 2's reaction force, die block 7 just can cooperate punching press piece 13 to strengthen the sheetmetal punching press effect like this, after the punching press is accomplished, punching press piece 13 rebound, the good sheetmetal rebound of punching press just can be driven to pressure spring a2, thereby it is ejecting from pressing mold frame 25 with the good sheetmetal of punching press, convenience of customers takes like this.

The second step is that: through two support bars 26 and two fixed blocks 30, can place die frame 25 when the device punching press sheetmetal and can not take place to rock the displacement to the stability of device when can keeping the punching press, just so can improve the practicality of device.

The third step: through removing two trapezoidal blocks 27 to the direction of keeping away from each other, thereby can upwards move pressure die frame 25, just so can take off with changing different pressure die frame 25 with pressing die frame 25, aim at two support bars 26 downstream respectively with fixed slot 31 on two fixed blocks 30, contact the inclined plane of two trapezoidal blocks 27 respectively when two fixed blocks 30, will drive two trapezoidal blocks 27 respectively and remove to two draw-in grooves 28 respectively, when two trapezoidal blocks 27 are in two fixed blocks 30 tops respectively, two pressure spring b 29's resilience will drive two trapezoidal blocks 27 respectively and remove to the direction that is close to each other respectively, thereby the downside of two trapezoidal blocks 27 is respectively in two fixed blocks 30 upside laminating backs, just can fix pressure die frame 25, thereby convenience of customers is with changing pressure die frame 25.

The fourth step: the stamping mechanical arm 11 moves downwards to drive the two pressing plates 12 to move downwards, so that when the stamping mechanical arm continues to move downwards after contacting the two lower pressing columns 15, the stamping mechanical arm respectively drives the two lower pressing columns 15 to move downwards, so that the two lower pressing plates 16 are respectively driven to move downwards, so that the two half sections, away from each other, of the movable strips 20 can be respectively driven to move downwards, so that the half sections, close to each other, of the two movable strips 20 can drive the movable plate 21 to move upwards, so that the movable columns 22 are driven to move upwards, so that the bottom plate 23 can be driven to move upwards, so that pressure is applied to the pressure spring a2, and therefore the pressure applied to the telescopic columns 32 by the pressure spring a2 can be improved, and the stamping effect of metal sheets on the bottom die plate 12 can be improved.

The fifth step: can improve flexible post 32's stability through spacing groove 6 and spacing post 3, can prevent flexible post 32 through two spouts 5 and two spacing 4 and take place to drop to improve the result of use of device.

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 metal stamping robot workstation, includes base (1), the upside fixed mounting of base (1) has backup pad (9), and the left side fixed mounting of backup pad (9) has mounting panel (10), and the downside fixed mounting of mounting panel (10) has punching press arm (11), its characterized in that: the stamping machine is characterized in that a stamping block (13) is fixedly mounted on the lower side of the stamping mechanical arm (11), a vertical groove (24) is formed in the upper side of the base (1), a bottom plate (23) is movably connected into the vertical groove (24), a pressure spring a (2) is fixedly mounted on the upper side of the pressure spring a (2), a telescopic column (32) is fixedly mounted on the upper end of the pressure spring a (2), a die pressing frame (25) is placed on the upper side of the base (1), a bottom die plate (7) is movably connected into the die pressing frame (25), a connecting groove (8) is formed in the lower side of the bottom die plate (7), and the telescopic column (.

2. A metal stamping robotic workstation as claimed in claim 1, wherein: the equal fixed mounting in both sides has fixed block (30) about pressure die frame (25), and fixed slot (31) have all been seted up to two fixed block (30) upsides, and equal swing joint has support bar (26) in two fixed slots (31), two support bars (26) all with base (1) upside fixed connection.

3. A metal stamping robotic workstation as claimed in claim 2, wherein: two draw-in groove (28) have all been seted up to one side that support bar (26) are close to each other, and the equal fixed mounting of a wall that two draw-in grooves (28) kept away from each other has pressure spring b (29), and the equal fixed mounting of one end that two pressure spring b (29) are close to each other has trapezoidal piece (27), and the downside of two trapezoidal pieces (27) is in the laminating of two fixed block (30) upsides respectively.

4. A metal stamping robotic workstation as claimed in claim 1, wherein: the lower wall of the vertical groove (24) is provided with a transverse groove (18), and the left wall and the right wall of the transverse groove (18) are both provided with device grooves (17).

5. A metal stamping robotic workstation as claimed in claim 4, wherein: the lower wall of the vertical and horizontal groove (18) is provided with a movable column (22), the upper end of the movable column (22) is fixedly connected with a bottom plate (23), and a movable plate (21) is fixedly sleeved on the movable column (22).

6. A metal stamping robotic workstation as claimed in claim 4, wherein: the rear wall of the transverse groove (18) is fixedly provided with two supporting columns (19), the two supporting columns (19) are movably sleeved with movable strips (20), and the two movable strips (20) are arranged below the movable plate (21).

7. A metal stamping robotic workstation as claimed in claim 4, wherein: two all swing joint has holding down plate (16) in device groove (17), and two holding down plate (16) set up respectively in two activity strip (20) tops.

8. The metal stamping robotic workstation of claim 7, wherein: two equal fixed mounting in upside of holding down plate (16) has lower compression leg (15), and two lower compression leg (15) activity respectively run through the upper wall in two device grooves (17), and two lower compression leg (15) activity respectively run through about moulding frame (25) two walls, and the equal fixed mounting in the left and right sides of punching press arm (11) presses down clamp plate (12), and two press clamp plate (12) set up respectively in two lower compression leg (15) tops.

9. A metal stamping robotic workstation as claimed in claim 1, wherein: spacing groove (6) have been seted up to the downside of flexible post (32), and swing joint has spacing post (3) in spacing groove (6), and spout (5) have all been seted up to the lower extreme and activity strip (20) fixed connection of spacing post (3) about inner wall of spacing groove (6), and the upper end fixed mounting of spacing post (3) has spacing (4), spacing (4) and two spout (5) swing joint.

10. A stamping method of a metal stamping robot workstation is characterized in that:

the first step is as follows: placing a metal sheet to be punched on the upper side of the bottom template, and then starting the punching mechanical arm (11) to drive the punching block (13) to move downwards, so that the metal sheet can be punched, the punching block (13) moves upwards, and the rebounding of the pressure spring a (2) can drive the punched metal sheet to move upwards;

the second step is that: the two supporting bars (26) and the two fixing blocks (30) can be used for placing the die pressing frame (25) without shaking and shifting when the device punches the metal sheet, so that the stability of the device during punching can be kept;

the third step: the two trapezoidal blocks (27) are moved towards the direction away from each other, so that the die pressing frame (25) can be moved upwards, the die pressing frame (25) can be taken down and replaced by a different die pressing frame (25), and the fixing grooves (31) on the two fixing blocks (30) are respectively aligned with the two supporting bars (26) to move downwards;

the fourth step: the half sections of the two supporting columns (19) which are close to each other and the two movable strips (20) drive the movable plate (21) to move upwards, so that the movable column (22) is driven to move upwards, the bottom plate (23) can be driven to move upwards, pressure is applied to the pressure spring a (2), and the pressure applied to the telescopic column (32) by the pressure spring a (2) can be improved.