CN114472688B - Punch press for machining lifter - Google Patents

Abstract

The application relates to the technical field of lifters and discloses a punch press for processing a lifter, which comprises a punch press body, wherein the punch press body comprises a lifting plate, a base, punches and power pieces, wherein the base is positioned under the lifting plate, the punches are connected to the lower side of the lifting plate, the power pieces are used for driving the lifting plate to vertically move, the punches are arranged in a plurality of different shapes along the horizontal direction, each punch is connected with a group of driving pieces which are installed on the lifting plate, the driving pieces are used for respectively driving the punches connected with the driving pieces to vertically move, the base is provided with a yielding hole respectively positioned under each punch, and one side of the yielding hole is provided with a polishing assembly used for polishing burrs on the bottom surface of a plate. The application can form through holes in various forms on the plate and has the effect of high working efficiency.

Description

Punch press for machining lifter

Technical Field

The application relates to the technical field of elevators, in particular to a punch press for machining an elevator.

Background

The lifter is a lifting device for carrying people or goods in the vertical direction, is widely applied to the field of building construction, and is used for punching and forming through holes on a plate by using a punch in the production and processing process.

In the related art, chinese patent with bulletin number CN202951797U discloses a punch press, which comprises a punch press body, wherein the punch press body is provided with a punch, and the punch is provided with a protective cover for preventing lubricating oil from splashing in the operation process, and reducing the possibility of injury of workers.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: the punch in the punch body is constant in size, and only through holes in a single form can be formed in the plate during the operation of the punch, if the plate for forming the lifter is required to be provided with through holes in various forms, the plate is required to be moved out of the original punch and then stretched into another punch for processing operation, so that the time and the labor are wasted, the working efficiency is low, and the improvement is required.

Disclosure of Invention

The application provides a punch press for processing a lifter, which aims to form through holes in various forms on a plate and improve working efficiency.

The application provides a punch press for processing a lifter, which adopts the following technical scheme:

The utility model provides a punch press for processing lift, includes the punch press body, the punch press body includes the lifter plate, is located the base under the lifter plate, connects the drift of lifter plate downside and is used for driving the power spare of lifter plate vertical movement, the drift is provided with a plurality of and the shape is different along the horizontal direction, all is connected with a set of driving piece of installing in the lifter plate on every drift, the driving piece is used for driving respectively rather than continuous drift vertical movement, offer the hole of stepping down that is located respectively under each drift on the base, one side of hole of stepping down is equipped with the polishing subassembly that is used for grinding panel bottom surface burr.

By adopting the technical scheme, when the plate for assembling and forming the lifter is processed, an operator can move each punch to the state that the heights of the bottom ends are different through the driving piece so as to punch the plate by using the punch with the lower bottom end, and thus, the through hole with the same shape as the punch is punched on the plate; the punches can be moved to the state that the heights of the bottom ends are the same by the driving piece so as to synchronously punch the plate by using all the punches, thereby forming through holes with various forms on the plate at one time. Compared with the traditional punching mode, the punching mode can form through holes in various different forms, saves the process of repeatedly transferring the plate when the through holes in different forms are formed on the same plate, and is beneficial to improving the punching efficiency of the plate and the processing efficiency of the lifter.

In addition, after the panel is die-cut by the drift, can have the burr on its surface inevitably, the polishing assembly can grind the burr that is located the panel bottom surface after the die-cut of panel is accomplished to save the follow-up polishing time of panel, improve product quality.

Optionally, the driving piece is including setting up the actuating cylinder in lifter plate top, actuating cylinder's piston rod passes lifter plate and drift fixed connection downwards, the fixed slot that supplies the drift top to stretch into is seted up to the bottom surface of lifter plate.

Through adopting above-mentioned technical scheme, when utilizing one of them drift die-cut panel, can extend the drive cylinder piston rod that links to each other with this drift to make this drift receive thrust effect to move down to the state that the bottom is less than other drifts. Each punch head controls the vertical movement of the punch head through different driving cylinders respectively, so that a plurality of different combination modes can be provided when the punch press works, through holes in various forms are formed in the plate, and the practicability is high. When the punch is not used, the top end of the punch can extend into the fixing groove, so that the structural compactness of the punch is improved.

Optionally, the drift includes the fixed part that links to each other with the actuating cylinder and sliding connection is at the movable part on the fixed part, the movable groove that extends along vertical direction has been seted up to the bottom surface of fixed part, the top slip setting of movable part is in the movable groove, be connected with the fastener that is used for dismantling the connection movable part on the fixed part.

Through adopting above-mentioned technical scheme, during the drift during operation, except that the synchronous die-cut panel of usable fixed part and movable part, operating personnel can also connect the movable part in the state of stretching out the fixed part to utilize the movable part to die-cut panel alone, thereby further richen the form style of shaping through-hole on the panel, the practicality is stronger. Because the movable part can be detachably arranged on the fixed part, when the movable part is worn due to frequent use, an operator can also detach the movable part from the fixed part so as to be independently replaced, thereby prolonging the service life of the punch.

Optionally, the fastener includes threaded connection at the fastening bolt of fixed part bottom, set up on the movable part is close to fastening bolt's the lateral wall with fastening bolt screw thread complex fastening screw, fastening screw is equipped with a plurality of and is the equidistance along vertical direction and distributes.

Through adopting above-mentioned technical scheme, fixed part and movable part are connected through fastening bolt and fastening screw, intensity when both are connected is high, stability is good for the difficult damage of bending when the movable part die-cuts the panel alone. In addition, operating personnel can also be with fastening bolt and the screw thread fit of different fastening to change the length that movable part stretched out the fixed part, thereby the panel of adaptation different thickness, or the punching press forms the recess of different degree of depth on the panel, has further improved the practicality of punch press.

Optionally, the polishing subassembly includes the locating piece, fixes the dull polish piece of locating piece upside and is used for driving locating piece circumferential rotation's rotating electrical machines, the output shaft and the locating piece fixed connection of rotating electrical machines, the pore wall in hole of stepping down is equipped with the holding tank that the level extends, be provided with the moving member that is used for driving the polishing subassembly level to move into or shift out the holding tank in the holding tank.

Through adopting above-mentioned technical scheme, during the drift during operation, accessible moving part will polish the subassembly and move into the holding tank to avoid polishing the waste material whereabouts that the subassembly influences on panel and is cut off by the drift. After the punch work is finished, the movable part moves the polishing assembly into the yielding hole, and the rotary motor drives the positioning block and the polishing sheet to rotate, so that burrs on the bottom surface of the plate are polished by the polishing sheet rotating at a high speed. When polishing, an operator only needs to control a switch for starting the rotary motor, and the polishing device is simple and convenient to operate, high in polishing efficiency and good in polishing effect.

Optionally, the moving member includes a moving cylinder and a moving plate fixedly connected with a piston rod of the moving cylinder, and the rotating motor is arranged on the moving plate.

Through adopting above-mentioned technical scheme, the subassembly of polishing is through removing cylinder control its automation and is moved into or remove the holding tank, easy and simple to handle, the removal efficiency of the subassembly of polishing is high, workman's low in labor strength.

Optionally, the upper end of the accommodating groove is closed, the moving plate comprises a moving part fixedly connected with a piston rod of the moving cylinder, a bearing part positioned right above the moving part and a plurality of elastic pieces arranged between the moving part and the bearing part, and the elastic pieces can generate telescopic deformation along the vertical direction; when the elastic piece is in a natural state, the top surface of the polishing piece is flush with the top surface of the base.

Through adopting above-mentioned technical scheme, the top of holding tank is sealed for the polishing subassembly is accomodate and can not expose on the top when the holding tank, in order to avoid irregular panel to stretch into the holding tank when the translation and cause wearing and tearing, dust and die-cut time the piece that forms to polishing subassembly be difficult for falling to the dull polish piece on, polish effectual, finished product high quality. When the polishing component is positioned in the accommodating groove, the polishing piece is abutted against the top wall of the accommodating groove, and the elastic piece is in a compressed state and generates elasticity; when the polishing component moves out of the accommodating groove, the elastic force of the elastic piece can drive the bearing part to move upwards, so that the polishing sheet moves to a state that the top surface is flush with the base, and the polishing sheet polishes the plate.

Optionally, the top of locating piece is equipped with the chamfer in its one end that is close to and keeps away from the holding tank.

Through adopting above-mentioned technical scheme, the chamfer plays the effect of direction when the locating piece moves into or shifts out the holding tank for operating personnel need not to press the locating piece in step when utilizing the removal cylinder to make the subassembly income holding tank of polishing, and the operation is convenient and fast more.

Optionally, the upside integrated into one piece of removal portion has a plurality of guide posts, set up the guiding hole that supplies each guide post to wear out respectively on the supporting portion, the guide post slides and wears to establish in the guiding hole rather than corresponding.

Through adopting above-mentioned technical scheme, guide post and guiding hole cooperation play the effect that hinders removal portion and bearing portion and produce relative movement in the horizontal direction, help guaranteeing the overall stability of movable plate and the orderly removal of polishing assembly.

Optionally, the hole wall that the holding tank was kept away from to the hole of stepping down is fixed with the stopper, the top surface of stopper and the bottom surface parallel and level of bearing portion when the elastic component is in natural state, and the top of stopper is equipped with the direction inclined plane in its one end that is close to the holding tank, the direction inclined plane is by the link of stopper and base to the direction downward sloping of holding tank gradually.

Through adopting above-mentioned technical scheme, the movable plate moves into under the effect of moving the cylinder and gives way the hole, and the stopper can stretch into in the clearance that movable part and supporting portion formed, and the stopper plays the spacing effect of butt this moment for the drift is difficult for pushing down the subassembly of polishing when stepping down the hole because of the malfunction, helps guaranteeing the stability of subassembly during operation in vertical direction of polishing. The guide inclined plane plays the effect of direction when stopper level stretches into between remove portion and the supporting portion on the one hand, and on the other hand can also guide the waste material whereabouts that die-cut formed to avoid the waste material to pile up on the stopper and influence the operation of polishing assembly.

In summary, the present application includes at least one of the following beneficial technical effects:

the lifting plate is connected with a plurality of punches with different forms, and when the plate is punched, an operator can move each punch to the state that the bottom ends are level or different in height through different driving pieces, so that through holes with various forms are punched and formed on the plate by using one punch press, and the production efficiency of the lifter is improved;

each punch comprises a fixed part and a movable part which are connected in a sliding way and are detachable, when the punch works, the movable part can be moved in or out of the fixed part, so that the fixed part or the movable part is utilized to punch the plate, the form number of the formed through holes in the plate is further enriched, and the practicability is high;

After the punch work is finished, the polishing assembly can stretch into the yielding hole under the action of the movable air cylinder so as to polish the bottom surface of the plate by the polishing sheet which rotates at a high speed under the drive of the rotating motor, thereby improving the quality of the finished product of the punched plate.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present application.

Fig. 2 is a schematic partial cross-sectional view of a lifter plate, punch, and driver in accordance with an embodiment of the present application.

FIG. 3 is a schematic partial cross-sectional view of a base in an embodiment of the application.

Fig. 4 is an enlarged schematic view at a in fig. 3.

Reference numerals illustrate:

1. A punch body; 11. a frame; 12. a lifting plate; 121. a fixing groove; 13. a base; 131. a relief hole; 132. a receiving groove; 133. a limiting block; 134. a guide slope; 14. a punch; 141. a fixing part; 142. a movable part; 143. a movable groove; 144. a connecting screw hole; 145. fastening the screw hole; 15. a power member; 16. a driving member; 161. a driving cylinder; 2. a fastener; 21. a fastening bolt; 3. a polishing assembly; 31. a positioning block; 311. chamfering; 32. a sanding sheet; 33. a rotating motor; 4. a moving member; 41. a moving cylinder; 42. a moving plate; 421. a moving part; 422. a support part; 423. an elastic member; 424. a guide post; 425. and a guide hole.

Detailed Description

The application is described in further detail below with reference to fig. 1-4.

The embodiment of the application discloses a punch press for machining a lifter. Referring to fig. 1, a punch for processing a lifter includes a punch body 1, and the punch body 1 in this embodiment is a hydraulic punch. The punch body 1 comprises a frame 11, a lifting plate 12, a base 13 positioned right below the lifting plate 12, a punch 14 connected to the lifting plate 12 and a power piece 15 arranged on the frame 11 and used for driving the lifting plate 12 to vertically move, wherein the base 13 is fixedly arranged on the frame 11. The power member 15 in this embodiment adopts a hydraulic cylinder, and a piston rod of the hydraulic cylinder faces vertically downwards and is fixedly connected with the lifting plate 12 so as to drive the lifting plate 12 to move vertically.

Referring to fig. 1 and 2, the number of punches 14 is plural and distributed in the horizontal direction, and the cross-sectional shapes of the punches 14 are different from each other. Specifically, in this embodiment, two punches 14 are provided and distributed in the feeding direction of the sheet material to show the structure thereof, wherein one punch 14 has a circular cross section and the other punch 14 has a square cross section. In other embodiments, the punches 14 can be provided in other numbers or shapes.

Referring to fig. 1 and 2, the lifting plate 12 is connected with driving members 16 equal in number to the punches 14, and each driving member 16 is respectively located right above a different punch 14 and is used for driving the punches 14 located close to the driving member to move vertically. The driving member 16 in this embodiment includes a driving cylinder 161 mounted on the upper side of the elevation plate 12, and a piston rod of the driving cylinder 161 is directed to the lower side and fixed to the tip of the punch 14 through the elevation plate 12. When the piston rod of the driving cylinder 161 expands and contracts, the punch 14 moves vertically. In other embodiments, the driving cylinder 161 may be provided as another power structure such as a hydraulic cylinder or an electric push rod. In actual working, an operator can move the designated punch 14 downwards to a state that the bottom end is lower than other punches 14 according to the requirement, so that the punch 14 is utilized to punch a through hole with a designated shape on a plate; or the bottom ends of the punches 14 are moved to be in a flush state so as to synchronously form through holes with different forms on the plate by utilizing all the punches 14, thereby improving the punching efficiency of the punch to the plate.

Referring to fig. 1 and 2, each punch 14 includes a fixed portion 141 and a movable portion 142 detachably connected by a fastener 2, a top end of the fixed portion 141 is fixedly connected with a piston rod of a driving cylinder 161, a movable groove 143 extending in a vertical direction is formed in a bottom surface of the fixed portion 141, a top end of the movable portion 142 is slidably disposed in the movable groove 143, and a length of the movable portion 142 is smaller than a depth of the movable groove 143, so that the movable portion 142 can completely extend into the movable groove 143. In order to improve the structural compactness of the punch press, a fixing groove 121 into which the top end of the fixing portion 141 extends is formed in the bottom surface of the lifting plate 12, and the fixing portion 141 can extend into the fixing groove 121 under the action of the driving cylinder 161, so that the occupied space of the punch 14 when idle is reduced.

Referring to fig. 1 and 2, in this embodiment, two sets of fasteners 2 are provided on each punch 14, and the two sets of fasteners 2 are respectively disposed on two sides of the movable portion 142, so as to fasten the fixed portion 141 and the movable portion 142. Each group of fasteners 2 comprises a fastening bolt 21 which is in threaded connection with the bottom end of a fixed part 141, a connecting screw hole 144 for screwing in the fastening bolt 21 is formed in the fixed part 141, a plurality of fastening screw holes 145 are formed in the side wall of a movable part 142, which is close to the fastening bolt 21, a plurality of fastening screw holes 145 positioned on the same side of the movable part 142 are distributed at equal intervals along the vertical direction, and each fastening screw hole 145 can be in threaded fit with the fastening bolt 21. And the interval from the lowest fastening screw hole 145 of the movable part 142 to the bottom surface of the movable part 142 is equal to the interval from the connecting screw hole 144 to the bottom surface of the fixed part 141, so that when the fastening bolt 21 is in threaded connection with the lowest fastening screw hole 145, the bottom surface of the movable part 142 is flush with the bottom surface of the fixed part 141, and both the fixed part 141 and the movable part 142 can be contacted with a plate material when the punch 14 works, thereby being beneficial to improving the punching effect of the punch 14 on the plate material. In addition, the operator can further mold a through hole of a larger size by punching a plate material using the movable portion 142 by connecting the fastening bolt 21 with other fastening screw holes 145 such that the movable portion 142 protrudes out of the movable groove 143.

Referring to fig. 1 and 3, the base 13 is provided with relief holes 131 equal in number to the punches 14, each relief hole 131 is located directly under a different punch 14, and the shape of the relief hole 131 is the same as that of the punch 14 located directly above the relief hole 131, so that scraps formed by punching the punch 14 on the sheet fall.

Referring to fig. 3 and 4, the hole wall of each relief hole 131 is provided with a horizontally extending accommodating groove 132 for accommodating the polishing assembly 3 for polishing burrs on the bottom surface of the plate. To avoid exposing the top end of the grinding assembly 3, the top end of the accommodating groove 132 is closed in this embodiment, and a moving member 4 for driving the grinding assembly 3 into or out of the yielding hole 131 is provided in the accommodating groove 132. The polishing assembly 3 comprises a positioning block 31, a polishing sheet 32 fixed on the upper side of the positioning block 31 and a rotating motor 33 positioned below the positioning block 31, wherein an output shaft of the rotating motor 33 is fixedly connected with the positioning block 31 and used for driving the positioning block 31 and the polishing sheet 32 to circumferentially rotate.

Referring to fig. 3 and 4, the moving member 4 in the present embodiment includes a moving cylinder 41 and a moving plate 42, wherein a cylinder barrel of the moving cylinder 41 is disposed in the accommodating groove 132, and a piston rod is disposed horizontally toward the yielding hole 131 and fixedly connected with the moving plate 42, so as to drive the moving plate 42 to extend into or out of the yielding hole 131. In other embodiments, the moving cylinder 41 may be replaced with a hydraulic cylinder, an electric push rod, or the like.

Referring to fig. 3 and 4, the moving plate 42 includes a moving portion 421, a supporting portion 422 located right above the moving portion 421, and an elastic member 423 disposed between the moving portion 421 and the supporting portion 422, wherein the moving portion 421 is L-shaped and fixedly connected to a piston rod of the moving cylinder 41, and the rotating motor 33 is disposed on the moving portion 421. The elastic member 423 is provided with a plurality of supporting portions 422 and moving portions 421 and is uniformly distributed between them. The elastic member 423 in this embodiment is preferably a return spring, the extension direction of the return spring is vertical, and when the return spring is in a natural state and the polishing assembly 3 moves out of the accommodating groove 132, the top surface of the polishing sheet 32 is flush with the top surface of the base 13, so that the polishing sheet 32 polishes burrs on the bottom surface of the board when rotating. When the grinding assembly 3 is not in use, the grinding assembly 3 can be received in the receiving groove 132 so as to prevent the grinding assembly 3 from affecting the blanking of the waste material, and the return spring is in a compression set state. In other embodiments, the elastic member 423 may be configured as a spring plate or the like.

Referring to fig. 3 and 4, in order to allow the support-free portion 422 and the moving portion 421 to move relatively in the horizontal direction, the polishing assembly 3 is moved out of the accommodating groove 132, and a plurality of guide posts 424 are integrally formed on the upper side of the moving portion 421 in this embodiment. The support portion 422 is provided with guide holes 425 aligned with the guide posts 424 in the same number, and each guide post 424 is slidably inserted into the corresponding guide hole 425. In addition, in order to facilitate the retraction of the sanding assembly 3 into the receiving recess 132, a chamfer 311 is provided on the top of the positioning block 31 at an end thereof adjacent to and remote from the receiving recess 132, the chamfer 311 being capable of guiding the positioning block 31 as it moves into the receiving recess 132. It should be noted that: the positioning block 31 and the abrasive sheet 32 in this embodiment may be square, circular, or any other shape that does not affect the rotation of the abrasive sheet 32 in the relief hole 131.

Referring to fig. 3 and 4, in order to improve the stability of the moving plate 42 when the polishing assembly 3 extends into the yielding hole 131, a limiting block 133 is fixed on the wall of the yielding hole 131 away from the accommodating groove 132, and the limiting block 133 is flush with the bottom surface of the supporting portion 422 when the elastic member 423 is in a natural state. When the moving plate 42 moves out of the accommodating groove 132 and resets, the stopper 133 extends between the supporting portion 422 and the moving portion 421 to support the supporting portion 422 along with the continuous pushing of the moving cylinder 41. In order to facilitate the stopper 133 moving into the space between the supporting portion 422 and the moving portion 421 and the blanking of the waste material, the top of the stopper 133 is further provided with a guiding inclined surface 134 at one end thereof near the accommodating groove 132.

The implementation principle of the punch press for processing the lifter provided by the embodiment of the application is as follows: when the plate material for assembling the lifter is punched, as the lifting plate 12 is connected with the punches 14 with various different shapes, an operator can move each punch 14 to the state with different bottom heights through the driving piece 16 during working so as to punch the plate material by using the punch 14 with the lowest bottom height, thereby forming through holes with specified shapes on the plate material; or the bottom ends of the punches 14 are moved to a flush state to simultaneously die-cut the plate material by the plurality of punches 14, thereby forming through holes of various forms at one time on the plate material. During punching, an operator is not required to repeatedly transfer the plate to different punches, so that through holes in various forms can be formed in one punch, and the working efficiency is higher. In addition, after punching, the polishing assembly 3 can be moved into the abdication hole 131 under the action of the moving piece 4, so that the rotating polishing piece 32 polishes burrs on the bottom surface of the plate, and the quality of a finished product is improved.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (6)

1. The utility model provides a punch press for processing lift, includes punch press body (1), punch press body (1) include lifter plate (12), be located base (13) under lifter plate (12), connect drift (14) and power piece (15) that are used for driving vertical removal of lifter plate (12) in lifter plate (12) downside, its characterized in that: the punching device comprises a base (13), wherein a plurality of punches (14) are arranged in the horizontal direction, the shapes of the punches are different, each punch (14) is connected with a group of driving parts (16) which are arranged on a lifting plate (12), the driving parts (16) are used for driving the punches (14) connected with the driving parts to move vertically, a yielding hole (131) which is respectively arranged under each punch (14) is formed in the base (13), and a polishing assembly (3) for polishing burrs on the bottom surface of a plate is arranged on one side of each yielding hole (131);

The polishing assembly (3) comprises a positioning block (31), a polishing sheet (32) fixed on the upper side of the positioning block (31) and a rotating motor (33) for driving the positioning block (31) to circumferentially rotate, an output shaft of the rotating motor (33) is fixedly connected with the positioning block (31), a containing groove (132) horizontally extending is formed in the hole wall of the yielding hole (131), and a moving piece (4) for driving the polishing assembly (3) to horizontally move in or out of the containing groove (132) is arranged in the containing groove (132);

The moving part (4) comprises a moving cylinder (41) and a moving plate (42) fixedly connected with a piston rod of the moving cylinder (41), and the rotating motor (33) is arranged on the moving plate (42);

The upper end of the accommodating groove (132) is closed, the moving plate (42) comprises a moving part (421) fixedly connected with a piston rod of the moving cylinder (41), a bearing part (422) positioned right above the moving part (421) and a plurality of elastic pieces (423) arranged between the moving part (421) and the bearing part (422), and the elastic pieces (423) can generate telescopic deformation along the vertical direction; when the elastic piece (423) is in a natural state, the top surface of the abrasive sheet (32) is flush with the top surface of the base (13);

The hole wall that holding tank (132) was kept away from to hole (131) of stepping down is fixed with stopper (133), the top surface of stopper (133) is in the bottom surface parallel and level of bearing portion (422) when natural state with elastic component (423), and the top of stopper (133) is equipped with direction inclined plane (134) in its one end that is close to holding tank (132), direction inclined plane (134) are by the link of stopper (133) and base (13) to the direction of holding tank (132) downward sloping gradually.

2. A punch for machining a lifter according to claim 1, wherein: the driving piece (16) comprises a driving air cylinder (161) arranged above the lifting plate (12), a piston rod of the driving air cylinder (161) downwards penetrates through the lifting plate (12) and is fixedly connected with the punch (14), and a fixing groove (121) for the top end of the punch (14) to extend into is formed in the bottom surface of the lifting plate (12).

3. A punch for machining a lifter according to claim 1, wherein: the punch (14) comprises a fixed part (141) connected with the driving cylinder (161) and a movable part (142) connected with the fixed part (141) in a sliding way, a movable groove (143) extending along the vertical direction is formed in the bottom surface of the fixed part (141), the top end of the movable part (142) is arranged in the movable groove (143) in a sliding way, and a fastener (2) used for detachably connecting the movable part (142) is connected to the fixed part (141).

4. A punch for machining a lifter according to claim 3, wherein: the fastener (2) comprises fastening bolts (21) which are connected to the bottom ends of the fixing portions (141) in a threaded mode, fastening screw holes (145) which are matched with the fastening bolts (21) in a threaded mode are formed in the side walls, close to the fastening bolts (21), of the movable portions (142), and the fastening screw holes (145) are formed in a plurality of mode and are distributed in an equidistant mode along the vertical direction.

5. A punch for machining a lifter according to claim 1, wherein: the top of the positioning block (31) is provided with a chamfer (311) at one end of the positioning block, which is close to and far away from the accommodating groove (132).

6. A punch for machining a lifter according to claim 1, wherein: the upper side integrated into one piece of movable part (421) has a plurality of guide posts (424), support portion (422) is last to be offered and is supplied guiding hole (425) that each guide post (424) worn out respectively, guide post (424) slip wears to establish in guiding hole (425) rather than corresponding.