CN210500563U - Positioning perforating machine - Google Patents

Abstract

The utility model provides a positioning and perforating machine, including frame, punching press subassembly, workstation and limiting plate, the punching press subassembly sets up in the frame, and punching press subassembly bottom is equipped with the mould, and the workstation setting is located punching press subassembly below in the frame, is equipped with the bed die that is used for with last mould looks adaptation on the workstation. The limiting plate is located one side of bed die, is connected with the rotation piece on the limiting plate, rotates the angle of inclination that is used for changing the limiting plate, rotates the piece and is connected with the connecting seat, and the connecting seat can be dismantled with the workstation and be connected. The utility model provides a positioning and punching machine, this positioning and punching machine not only can be spacing fixed to the side for planar material panel, also can be spacing to the side for the material panel on inclined plane, have improved this positioning and punching machine's application scope.

Description

Positioning perforating machine

Technical Field

The utility model belongs to the technical field of mechanical equipment punches, more specifically say, relate to a positioning and punching machine.

Background

At present, the press machine is widely applied to the processes of cutting, punching, blanking, bending, riveting, forming and the like. In the prior art, in order to prevent a material plate from moving in the punching operation process, a baffle is often arranged on a workbench of a press machine, when the material plate is punched, a worker is required to firstly place the material plate on a lower die, then the position of the material plate is adjusted, the material plate is abutted against the baffle arranged on the workbench, and the limitation on the material plate is completed, the baffle in the prior art can only limit the material plate with a certain specific side surface, the baffle has a single limiting function, and the application range is small; when the kind of material panel changed, need wholly pull down the limiting plate and change, complex operation reduces the production efficiency of press.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a positioning and perforating machine aims at solving among the prior art baffle and can only carry on spacingly to the material panel that has a certain specific side, and baffle limit function is single, the little technical problem of application scope.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a positioning punch, including:

a frame;

the stamping assembly is arranged on the rack; an upper die is arranged at the bottom of the stamping component;

the workbench is arranged on the rack and positioned below the stamping assembly; the workbench is provided with a lower die matched with the upper die;

the limiting plate is positioned on one side of the lower die; and

the supporting seat is detachably arranged on the workbench; the supporting seat include with the connecting seat of connection can be dismantled to the workstation, and set up be in on the connecting seat, with limiting plate connection's rotation piece, it is used for the adjustment to rotate the face of limiting plate for the inclination of the top surface of workstation.

As another embodiment of the present application, the rotating member includes:

the connecting sleeve is fixedly arranged on the connecting seat; the axial direction of the connecting sleeve is parallel to the length direction of the limiting plate;

the rotating sleeve is sleeved outside the connecting sleeve and can rotate relative to the connecting sleeve; the limiting plate is arranged on the rotating sleeve; and

and the limiting piece is used for limiting the relative position of the rotating sleeve and the connecting sleeve when the inclination angle of the limiting piece relative to the top surface of the workbench is adjusted to be in place.

As another embodiment of the application, a plurality of grooves are uniformly formed in one end of the rotating sleeve, which is far away from the connecting seat, along the circumferential direction;

one end of the limiting part is inserted into the connecting sleeve in the axial direction of the connecting sleeve, the other end of the limiting part extends to the outside of the connecting sleeve, an extending part is arranged at the other end of the limiting part, and a plurality of protruding blocks used for being connected with the grooves in a clamped mode are arranged on the extending part.

As another embodiment of this application, set firmly extension spring in the connecting sleeve, extension spring one end with connecting sleeve connects, the other end with the locating part inserts one end in the connecting sleeve is connected.

As another embodiment of the present application, the connection socket includes:

the fixed block is detachably connected with one side of the workbench, and a first connecting plate is arranged on the fixed block; the length direction of the first connecting plate is perpendicular to the length direction of the limiting plate;

the second connecting plate is arranged in parallel with the first connecting plate; the rotating piece is arranged on the second connecting plate;

and one end of the screw rod is connected with the plate surface of the second connecting plate, and the other end of the screw rod penetrates through the first connecting plate.

As another embodiment of the present application, the lower mold is detachably connected to the work table; the upper die is detachably connected with the stamping assembly.

As another embodiment of the application, the lower die is detachably connected with the workbench through a fixing piece.

As another embodiment of the present application, the fixing member includes:

one end of the pressing plate is abutted against the workbench, and the other end of the pressing plate is detachably connected with the lower die; and

and the limiting bolt penetrates through the pressing plate along the thickness direction, and one end of the limiting bolt is connected with the workbench through threads.

As another embodiment of the application, an elastic sleeve is further arranged at the bottom of the stamping assembly and sleeved outside the upper die; the length of the elastic sleeve is greater than that of the upper die.

As another embodiment of the present application, a through hole penetrating the lower mold along a height direction is formed in the lower mold; the through hole is positioned right below the upper die; the workbench is provided with a blanking hole which penetrates through the workbench along the height direction; the through hole is communicated with the blanking hole.

The utility model provides a positioning and punching machine's beneficial effect lies in: compared with the prior art, the utility model discloses location puncher is equipped with the limiting plate that is used for injecing material panel relative position on the bed die on the workstation, a certain side butt of limiting plate and material panel, and the limiting plate is spacing fixed to material panel, prevents that material panel from producing the removal at the operation in-process that punches, has improved this location puncher's precision. The angle of limiting plate can be adjusted, and the operation personnel can adjust the angle of limiting plate according to the difference of different batch material panel side gradient, makes the limiting plate keep the butt of maximum area with the side of material panel all the time, has improved this location puncher to the spacing of material panel fixed. The positioning and punching machine can limit and fix the material plates with the planar side surfaces and also can limit and fix the material plates with the inclined side surfaces, so that the application range of the positioning and punching machine is widened. The connecting seat can be dismantled with the workstation and be connected, has made things convenient for the change of operation personnel to spacing subassembly, makes the operation personnel can change the spacing subassembly of different specifications according to production needs, makes this location puncher can carry on spacingly to the material panel of different specifications, has further improved the application scope of this location puncher. The positioning and punching machine also has the characteristics of simple mechanism, quick angle adjustment and convenient use.

Drawings

Fig. 1 is a schematic structural view of a positioning punch according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line B-B of FIG. 1;

FIG. 3 is a schematic bottom view of the upper mold;

fig. 4 is a schematic perspective view of the connection structure of the connection seat, the rotation member and the limiting plate in fig. 1;

FIG. 5 is a schematic top view of the connecting structure of the connecting seat, the rotating member and the limiting plate in FIG. 1;

fig. 6 is an enlarged view of the structure at C in fig. 5.

FIG. 7 is a cross-sectional view of the rotating member taken along line A-A in FIG. 6;

fig. 8 is a schematic sectional view of the stopper of fig. 6, separated from the rotating sleeve and the connecting sleeve.

In the figure: 1. a frame; 2. a stamping assembly; 21. an upper die; 22. an elastic sleeve; 3. a work table; 31. a lower die; 311. a through hole; 4. a connecting seat; 41. a fixed block; 42. a first connecting plate; 43. a second connecting plate; 44. a screw; 5. a rotating member; 51. a connecting sleeve; 52. rotating the sleeve; 53. a limiting member; 531. an extension portion; 532. a raised block; 54. an extension spring; 6. a limiting plate; 8. a fixing member; 81. pressing a plate; 82. and a limiting bolt.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to fig. 3, the positioning hole-punching machine of the present invention will now be described. Positioning and punching machine, including frame 1, punching press subassembly 2, workstation 3, limiting plate 6 and supporting seat, punching press subassembly 2 sets up in frame 1, and 2 bottoms of punching press subassembly are equipped with mould 21. The workbench 3 is arranged on the frame 1 and is positioned below the stamping assembly 2; the table 3 is provided with a lower die 31 adapted to the upper die 21. The limit plate 6 is located at one side of the lower mold 31. The supporting seat is detachably arranged on the workbench 3; the supporting seat includes connecting seat 4 of being connected with workstation 3 can be dismantled to and set up on connecting seat 4, rotate 5 with limiting plate 6 is connected, rotates the inclination of 5 faces that are used for adjusting limiting plate 6 for the top surface of workstation 3.

When punching the material panel, put material panel on lower mould 31, the position of adjustment material panel makes one of them side of material panel and limiting plate 6 butt, then control punching press subassembly 2 downstream, accomplishes the operation of punching the material panel through the cooperation of last mould 21 and lower mould 31. When the side of material panel was the inclined plane, the adjustment rotated piece 5, made the slope of limiting plate 6 and then with the side butt of this material panel, then control punching press subassembly 2 moves down, accomplished the operation of punching to material panel through the cooperation of upper die 21 and lower die 31.

The embodiment of the utility model provides a positioning and perforating machine compares with prior art, is equipped with the limiting plate 6 that is used for injecing material panel relative position on bed die 31 on the workstation 3, limiting plate 6 and a certain side butt of material panel, and limiting plate 6 is spacing fixed to material panel, prevents that material panel from producing the removal at the operation in-process that punches, has improved this positioning and perforating machine's precision. The angle of the limiting plate 6 can be adjusted, and an operator can adjust the angle of the limiting plate 6 according to the different gradients of the side faces of the material plates in different batches, so that the limiting plate 6 always keeps the maximum-area butt joint with the side faces of the material plates, and the limit fixation of the positioning perforating machine on the material plates is improved. The positioning and punching machine can limit and fix the material plates with the planar side surfaces and also can limit and fix the material plates with the inclined side surfaces, so that the application range of the positioning and punching machine is widened. Connecting seat 4 can be dismantled with workstation 3 and be connected, has made things convenient for the change of operation personnel to spacing subassembly, makes the operation personnel can change the spacing subassembly of different specifications according to production needs, makes this location puncher can carry on spacingly to the material panel of different specifications, has further improved the application scope of this location puncher. The positioning and punching machine also has the characteristics of simple mechanism, quick angle adjustment and convenient use.

Referring to fig. 2 to 8, as an embodiment of the positioning hole-punching machine of the present invention, the rotating member 5 includes a connecting sleeve 51, a rotating sleeve 52 and a limiting member 53. The connecting sleeve 51 is fixedly arranged on the connecting seat 4; the axial direction of the coupling sleeve 51 is parallel to the longitudinal direction of the stopper plate 6. The rotating sleeve 52 is sleeved outside the connecting sleeve 51 and can rotate relative to the connecting sleeve 51; the stopper plate 6 is provided on the rotating sleeve 52. The limiting member 53 is used for limiting the relative position of the rotating sleeve 52 and the connecting sleeve 51 when the inclination angle of the limiting plate 6 relative to the top surface of the workbench 3 is adjusted. Rotating sleeve 52 rotates for connecting sleeve 51, makes limiting plate 6 slope, and limiting plate 6 at this moment can be spacing fixed to the material panel that the side is the inclined plane, has improved this location puncher's application scope, and rotating sleeve 52 and connecting sleeve 51's relation of connection is adjusted through locating part 53, and locating part 53 simple structure has made things convenient for the regulation of operating personnel to rotating sleeve 52 and connecting sleeve 51 relation of connection.

As a specific implementation manner of the positioning punch provided by the utility model, be equipped with a first through hole that radially runs through connecting sleeve 51 on connecting sleeve 51, be equipped with the second through hole with the coincidence of first through hole on the rotating sleeve 52, the second through hole has evenly arranged a plurality ofly along rotating sleeve 52's circumference. When the limiting plate 6 is a plane for the side face of the material plate, the limiting piece 53 penetrates through one of the second through holes and the first through hole to realize clamping limiting of the rotating sleeve 52 and the connecting sleeve 51, when the side face of the material plate is an inclined face, the limiting piece 53 is firstly pulled out, then the rotating sleeve 52 is rotated to enable the limiting plate 6 to be attached to the inclined face of the material plate, at the moment, the first through hole in the connecting sleeve 51 is overlapped with the other second through hole in the rotating sleeve 52, the limiting piece 53 penetrates through the first through hole and the second through hole, and the connecting relation between the connecting sleeve 51 and the rotating sleeve 52 is limited and fixed. Connecting sleeve 51 and the sleeve 52 that rotates connection structure is simple, makes things convenient for the operating personnel to adjust connecting sleeve 51 and the sleeve 52 connection status that rotates, and then has made things convenient for the adjustment of operating personnel to the limiting plate 6 angle of inclination.

Referring to fig. 2 to 8, as an embodiment of the positioning hole-punching machine of the present invention, a plurality of grooves are uniformly formed along the circumferential direction at one end of the rotating sleeve 52 departing from the connecting seat 4. One end of the limiting piece 53 is inserted into the connecting sleeve 51 along the axial direction of the connecting sleeve 51, the other end extends out of the connecting sleeve 51, the other end of the limiting piece 53 is provided with an extending portion 531, and the extending portion 531 is provided with a plurality of protruding blocks 532 used for being clamped with the grooves. When the side of material panel is the plane, locating part 53 inserts in connecting sleeve 51, protruding piece 532 respectively with the recess joint, when the side of material panel is the inclined plane, pulls out from locating part 53, rotates rotating sleeve 52, makes the inclined plane laminating of limiting plate 6 slope and material panel, then inserts locating part 53, makes each protruding piece 532 respectively with each recess joint again, realizes the spacing fixed of rotating sleeve 52. The connection relation between the connecting sleeve 51 and the rotating sleeve 52 is simple, the connecting state of the connecting sleeve 51 and the connecting state of the rotating sleeve 52 can be adjusted conveniently by an operator, and the inclination angle of the limiting plate 6 can be adjusted conveniently by the operator. The limiting piece 53 is inserted into the connecting sleeve 51, so that the occupied space of the limiting piece 53 is saved, and the compactness of the rotating piece 5 is improved.

As a specific embodiment of the positioning and perforating machine provided by the utility model, the shape of cavity on the connecting sleeve 51 is polygon, and is corresponding, and the cross-section that the locating part 53 inserted the one end of connecting sleeve 51 is the polygon with the connecting sleeve 51 adaptation. The stability of the connection relation between the stopper 53 and the connection sleeve 51 is improved.

In this embodiment, the length of the two sides of the partition between the adjacent grooves is not more than 5mm, the grooves are densely arranged, the adjusting range of the inclination angle of the limiting plate 6 is increased, and the application range of the positioning and punching machine is widened.

Referring to fig. 6 to 8, as a specific embodiment of the positioning hole-punching machine provided by the present invention, an extension spring 54 is fixedly disposed in the connecting sleeve 51, one end of the extension spring 54 is connected to the connecting sleeve 51, and the other end is connected to one end of the limiting member 53 inserted into the connecting sleeve 51. The stopper 53 is connected to the connection sleeve 51 by the extension spring 54, and the stability of the connection relationship between the stopper 53 and the connection sleeve 51 is improved. When the operator adjusts the inclination angle of the limiting plate 6, the operator needs to first pull out the limiting member 53, then rotate the rotating sleeve 52 to incline the limiting plate 6 to a proper position, and then manually insert the limiting member 53 into the connecting sleeve 51 and the rotating sleeve 52 to be respectively connected with the connecting sleeve 51 and the rotating sleeve 52. The limiting part 53 is connected with the extension spring 54, the limiting part 53 is pulled out, the extension spring 54 deforms under stress, the limiting part 53 is loosened, the extension spring 54 recovers to the original length when the external force is not applied, the extension spring 54 can automatically drive the limiting part 53 to be clamped with the rotating sleeve 52, the operation that the limiting part 53 needs to be manually inserted after being pulled out is omitted, and the working efficiency of operating personnel is improved.

The extension spring 54 is always in a stretched state.

As a specific implementation of the positioning and perforating machine provided by the utility model, the limiting plate 6 and the rotating sleeve 52 are detachably connected through the bolt. The operator can replace the limiting plate 6 conveniently.

Referring to fig. 1, fig. 4 and fig. 5, as a specific embodiment of the positioning hole-punching machine of the present invention, the connecting seat 4 includes a fixing block 41, a second connecting plate 43 and a screw 44. Fixed block 41 with workstation 3 one side can be dismantled and be connected, is equipped with first connecting plate 42 on the fixed block 41. The longitudinal direction of the first connection plate 42 is perpendicular to the longitudinal direction of the stopper plate 6. The second connecting plate 43 is parallel to the first connecting plate 42, and the rotating member 5 is disposed on the second connecting plate 43. One end of the screw 44 is connected to the plate surface of the second connecting plate 43, and the other end passes through the first connecting plate 42. Fixed block 41 can be dismantled with workstation 3 one side and be connected, has made things convenient for the change of operation personnel to connecting seat 4, and fixed block 41 sets up in one side of workstation 3 simultaneously, has improved the length scope that can prevent to be punched material panel on the bed die 31. The second connecting plate 43 is connected with the fixing block 41 through the screw 44, and when the second connecting plate 43 abuts against one end face of the material plate, the punching positions of the same batch of material plates are kept uniform, so that the precision of punching operation of the same batch of material plates is improved. The second connecting plate 43 can also move along the length direction of the workbench 3, so that the positioning and punching machine can adjust the punching position of the material plate.

Referring to fig. 1 to 3, as a specific embodiment of the positioning and punching machine of the present invention, a lower mold 31 is detachably connected to a worktable 3; the upper die 21 is detachably connected to the punch assembly 2. The lower die 31 and the upper die 21 are generally matched for use, and the lower die 31 and the upper die 21 are convenient to replace, so that the positioning punching machine can punch punched materials with different shapes, and the application range of the positioning punching machine is improved.

Please refer to fig. 1 to fig. 3 together, as a specific embodiment of the positioning and punching machine provided by the present invention, the lower mold 31 is detachably connected to the working table 3 through the fixing member 8, the lower mold 31 itself is not provided with a fixing component, the structure is simple, the replacement of the lower mold 31 by the operator is facilitated, and the production cost of the lower mold 31 is also reduced.

As a specific embodiment of the positioning hole-punching machine provided by the present invention, a through hole 311 is formed in the lower die 31 and penetrates through the lower die 31 in the height direction; the through hole 311 is positioned right below the upper die 21, and the workbench 3 is provided with a blanking hole which penetrates through the workbench 3 along the height direction; the through hole 311 communicates with the blanking hole. The waste material that the operation of punching produced can directly remove along through hole 311 and blanking hole, has guaranteed the clean and tidy of workstation 3 up end, has avoided the influence of waste material to the operation of punching.

As a specific implementation mode of the positioning and perforating machine, the bottom of the workbench 3 is provided with a receiving barrel, and the open end of the receiving barrel is communicated with the blanking hole.

Referring to fig. 1 to 3, as a specific embodiment of the positioning hole-punching machine provided by the present invention, the fixing member 8 includes a pressing plate 81 and a limiting bolt 82, one end of the pressing plate 81 abuts against the working table 3, the other end of the pressing plate is detachably connected to the lower mold 31, the limiting bolt 82 penetrates through the pressing plate 81 along the thickness direction, and one end of the limiting bolt is connected to the working table 3 through a thread. The mounting 8 has carried out spacing fixed to the position of bed die 31, and mounting 8 simple structure dismantles rapidly, has made things convenient for the change of operation personnel to bed die 31.

In this embodiment, the one end that spacing bolt 82 deviates from workstation 3 is equipped with the butt piece that flushes with the top surface of bed die 31, and when material panel length is good at the length of bed die 31, spacing bolt 82 also can with the lower terminal surface butt of material panel, has increased the position of this location puncher with the material panel butt, has improved the stability that material panel placed on bed die 31.

In the present embodiment, the upper end surface of the table 3 is provided with a plurality of screw holes for connection with the stopper bolts 82.

Referring to fig. 1 and fig. 3 together, as a specific embodiment of the positioning and punching machine of the present invention, an elastic sleeve 22 is further disposed at the bottom of the punching assembly 2, and the elastic sleeve 22 is sleeved outside the upper mold 21; the length of the elastic sleeve 22 is greater than the length of the upper die 21. When last mould 21 punches to the material panel of thickness less, if go up mould 21 and directly punch with the face contact that punches, the face of punching of material panel often can receive the force earlier and produce certain deformation this moment, then just can accomplish the action of punching, influences the effect of punching of material panel face of punching. When the upper die 21 provided with the elastic sleeve 22 is used for punching, the elastic sleeve 22 can be abutted against the punching surface of the material plate firstly, and further fixing and limiting are carried out on the punching surface near the punching position, so that the punching surface near the punching position is prevented from deforming, and the precision of the hole punched by the positioning punching machine is improved. Meanwhile, the elastic sleeve 22 also avoids splashing and diffusion of waste materials or scrap iron generated in the punching operation process of the upper die 21. The elastic sleeve 22 effectively protects the upper die 21, reduces the damage of external sundries to the upper die 21, and avoids the accidental injury of the upper die 21 to operators.

In the present embodiment, the elastic sleeve 22 is an elastic tube such as a rubber hose, a rubber bellows, and a compression spring.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Positioning punch, its characterized in that includes:

a frame (1);

the stamping assembly (2) is arranged on the rack (1); an upper die (21) is arranged at the bottom of the stamping component (2);

the workbench (3) is arranged on the rack (1) and is positioned below the stamping assembly (2); a lower die (31) matched with the upper die (21) is arranged on the workbench (3);

the limiting plate (6) is positioned on one side of the lower die (31); and

the supporting seat is detachably arranged on the workbench (3); the supporting seat include with workstation (3) can dismantle connecting seat (4) of connection, and set up on connecting seat (4), with rotation piece (5) that limiting plate (6) are connected, it is used for the adjustment to rotate piece (5) the face of limiting plate (6) for the inclination of the top surface of workstation (3).

2. The positioning punch according to claim 1, characterized in that the rotating member (5) comprises:

the connecting sleeve (51) is fixedly arranged on the connecting seat (4); the axial direction of the connecting sleeve (51) is parallel to the length direction of the limiting plate (6);

the rotating sleeve (52) is sleeved outside the connecting sleeve (51) and can rotate relative to the connecting sleeve (51); the limiting plate (6) is arranged on the rotating sleeve (52); and

and the limiting piece (53) is used for limiting the relative position of the rotating sleeve (52) and the connecting sleeve (51) when the inclination angle of the limiting plate (6) relative to the top surface of the workbench (3) is adjusted to be in place.

3. The positioning punch of claim 2, wherein: a plurality of grooves are uniformly formed in one end, deviating from the connecting seat (4), of the rotating sleeve (52) along the circumferential direction;

one end of locating part (53) is followed the axial of connecting sleeve (51) is inserted in connecting sleeve (51), the other end extends to outside connecting sleeve (51), the other end of locating part (53) is equipped with extension (531), be equipped with on extension (531) a plurality of be used for with protruding piece (532) of recess joint.

4. The positioning punch of claim 3, wherein: an extension spring (54) is fixedly arranged in the connecting sleeve (51), one end of the extension spring (54) is connected with the connecting sleeve (51), and the other end of the extension spring is connected with one end, inserted into the connecting sleeve (51), of the limiting piece (53).

5. The positioning punch according to claim 1, characterized in that the connecting seat (4) comprises:

the fixing block (41) is detachably connected with one side of the workbench (3), and a first connecting plate (42) is arranged on the fixing block (41); the length direction of the first connecting plate (42) is vertical to that of the limiting plate (6);

a second connecting plate (43) arranged in parallel with the first connecting plate (42); the rotating piece (5) is arranged on the second connecting plate (43);

and one end of the screw rod (44) is connected with the plate surface of the second connecting plate (43), and the other end of the screw rod penetrates through the first connecting plate (42).

6. The positioning punch according to any one of claims 1-5, wherein: the lower die (31) is detachably connected with the workbench (3); the upper die (21) is detachably connected with the stamping assembly (2).

7. The positioning punch according to claim 6, characterized in that the lower die (31) is detachably connected to the table (3) by means of a fixing element (8).

8. The positioning punch according to claim 7, characterized in that the holder (8) comprises:

one end of the pressing plate (81) is abutted against the workbench (3), and the other end of the pressing plate is detachably connected with the lower die (31); and

and the limiting bolt (82) penetrates through the pressing plate (81) along the thickness direction, and one end of the limiting bolt is connected with the workbench (3) through threads.

9. The positioning punch of claim 6, wherein: the bottom of the stamping component (2) is also provided with an elastic sleeve (22), and the elastic sleeve (22) is sleeved outside the upper die (21); the length of the elastic sleeve (22) is greater than that of the upper die (21).

10. The positioning punch of claim 1, wherein: the lower die (31) is provided with a through hole (311) penetrating through the lower die (31) along the height direction; the through hole (311) is positioned right below the upper die (21); the workbench (3) is provided with a blanking hole which penetrates through the workbench (3) along the height direction; the through hole (311) is communicated with the blanking hole.

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