CN117564166A - Punching machine tool - Google Patents

Abstract

The invention relates to the technical field of punching equipment, and provides a punching machine tool which comprises a die shank, an upper die, a lower die, a die carrier, a positioning device and a machine tool body; the top of the die is provided with a first connecting part which is positioned in a first fixing part arranged at the bottom of the die shank; the upper die comprises a stamping die and an upper die holder, and a plurality of first through holes are formed in the part, close to the edge, of the upper die holder; a second through hole is formed in the center of the upper die holder; the lower die is provided with a plurality of third through holes near the edge part; a fourth through hole is formed in the center of the lower die; the machine tool body is provided with a workbench and a transmission part, the positioning device is arranged on the top surface of the workbench, the die shank is detachably connected with the transmission part, and two ends of the die carrier are respectively and movably connected with the workbench and the transmission part. Through setting up first connecting portion inside first fixed part, make first connecting portion and first fixed part contact, through rising or decline die shank during the use, can realize the quick connect of die shank and die and demolish fast, improved the efficiency of changing the die.

Description

Punching machine tool

Technical Field

The invention relates to the technical field of punching equipment, in particular to a punching machine tool.

Background

In the manufacturing industry, it is necessary to process holes in a thin material such as an aluminum plate, a steel plate, or a stainless steel plate. In the existing punching equipment, a disc-shaped punching die is often used so as to facilitate replacement of the punch.

In a disc-shaped punching die used in the market at present, as disclosed in Chinese patent document with publication number of CN213915759U, a replaceable die shank comprises an upper die holder, wherein the top surface of the upper die holder is provided with a groove at the central position, a thread groove is formed in the central position in the groove, and the thread groove is connected with the die shank in a threaded manner; the die shank is connected with the punch by adopting threads, when the dies with different specifications are replaced, the connected dies are required to be removed firstly, then the die is rotated, and after the required dies are aligned with the die shank, the studs at the bottom of the die shank are rotated to install the required dies.

The existing punch replacement mode is complex, so that the efficiency of replacing the punch is low; meanwhile, since the top surface of the lower die in the disc-shaped die is generally higher than the machine tool workbench, when a workpiece to be punched is placed on the top surface of the lower die for punching operation, the workpiece is difficult to keep horizontal placement and accurately position a punching vacancy.

Disclosure of Invention

In order to solve the problems of low die replacement efficiency and difficult workpiece positioning in the prior art, the invention provides a punching machine tool which comprises a die shank, an upper die, a lower die, a die carrier, a positioning device and a machine tool body;

the upper die comprises a die and an upper die seat, a first connecting part is arranged at the top of the die, and the first connecting part is positioned in a first fixing part arranged at the bottom of the die handle; the upper die holder is provided with a plurality of first through holes near the edge part, and the first through holes are uniformly distributed around the circle center of the upper die holder so as to install the stamping die; a second through hole is formed in the center of the upper die holder so as to be connected with the die carrier;

the lower die is provided with a plurality of third through holes close to the edge, the third through holes are uniformly distributed around the center of the lower die, the number of the third through holes corresponds to that of the first through holes, and the third through holes are arranged opposite to the center of the first through holes; a fourth through hole is formed in the center of the lower die to be connected with the die carrier;

the machine tool body is provided with a workbench and a transmission part, the positioning device is arranged on the top surface of the workbench, the die shank is detachably connected with the transmission part, and two ends of the die carrier are respectively and movably connected with the workbench and the transmission part;

the positioning device comprises a positioning table, a scale, a slide rule and a first supporting part, wherein the positioning table is arranged on the top surface of the workbench, and the first supporting part is arranged on two sides of the positioning table so as to support the scale and the slide rule.

Further, the first fixing portion is provided with an opening, the shape of the opening corresponds to that of the first connecting portion, and the position of the opening corresponds to the rotating track of the stamping die located on the upper die base.

Further, the die further includes a return spring; one end of the reset spring is connected with the second connecting part, and the other end of the reset spring is connected with the upper die holder.

Further, the die further comprises a reset spring and a second connecting part, the second connecting part is arranged below the first connecting part, the second connecting part is of a cylindrical structure, and the diameter of the first connecting part is larger than that of the second connecting part; one end of the reset spring is connected with the second connecting part, and the other end is connected with the upper die holder

Further, the upper die further comprises a guide sleeve, the guide sleeve is arranged at the bottom of the upper die holder, and the guide sleeve is arranged opposite to the center of the first through hole.

Further, a sixth through hole is formed in the side wall of the positioning table for installing a positioning pin, and one end of the positioning pin is detachably connected with a first opening formed in the side wall of the lower die.

Further, the scale includes a first fixing member and a first spacer; the first fixing piece penetrates through a sixth through hole formed in the scale and is installed in a second opening formed in the top surface of the first supporting portion, and the first gasket is arranged between the first fixing piece and the scale.

Further, the slide rule comprises a second fixing piece and a second gasket; the second fixing piece penetrates through the limiting groove formed in the sliding rule and is installed in the second opening formed in the top surface of the first supporting portion, and the second gasket is arranged between the second fixing piece and the sliding rule.

Further, a second support portion is provided outside the first support portion to support the slide rule and the work piece.

Further, the bottom of the die is also provided with a punch, and the shape of the third through hole corresponds to that of the punch arranged at the corresponding position.

Based on the above, compared with the prior art, the punching machine tool provided by the invention has the advantages that the quick connection and quick dismantling of the die shank and the die are realized through the movable connection of the first connecting part and the first fixing part, and the die replacement efficiency is improved; the position of the workpiece is positioned and adjusted through the scale and the slide rule, so that the punching precision of the workpiece is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

For a clearer description of embodiments of the invention or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art; the positional relationships described in the drawings in the following description are based on the orientation of the elements shown in the drawings unless otherwise specified.

Fig. 1 is a schematic structural diagram of a punching machine according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of an upper die structure according to a first embodiment of the present invention;

FIG. 3 is a schematic diagram of a lower die according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a positioning device according to a first embodiment of the present invention;

fig. 5 is a schematic diagram of an upper die structure according to a second embodiment of the present invention;

FIG. 6 is a schematic diagram of a die structure according to a third embodiment of the present invention;

fig. 7 is a schematic diagram of a die structure according to a fourth embodiment of the present invention;

fig. 8 is a schematic diagram of an upper die structure according to a fifth embodiment of the present invention;

fig. 9 is a schematic structural diagram of a positioning device according to a sixth embodiment of the present invention;

FIG. 10 is a schematic view of a scale structure according to a seventh embodiment of the present invention;

FIG. 11 is a schematic structural view of a first fixing member according to an eighth embodiment of the present invention;

fig. 12 is a schematic view of a slide rule according to a ninth embodiment of the present invention;

fig. 13 is a schematic structural view of a second fixing member according to a tenth embodiment of the present invention;

fig. 14 is a schematic structural diagram of a positioning device according to an eleventh embodiment of the present invention;

fig. 15 is a schematic diagram of a die structure according to a twelfth embodiment of the present invention.

Reference numerals:

10 first fixing portion 111 of the die shank 11 is opened

20 upper die 21 die 211 first connecting portion

212 return spring 213 second connecting portion 214 punch

22 upper die holder 221 first through hole 222 second through hole

23 guide sleeve 30 lower die 31 third through hole

32 fourth through hole 33 first open pore 40 die carrier

50 positioning device 51 positioning table 511 fifth through hole

512 locating pin 52 scale 521 first fixing piece

5211 third connecting portion 5212 first handle of first fixing ring 5123

522 first spacer 523 sixth throughhole 53 slide rule

531 second fixing member 5311 fourth connecting portion 5312 second fixing ring

5313 limiting groove of second pad 533 of second handle 532

54 first support 541 second opening 55 second support

60 machine tool body 61 workbench 62 transmission part

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention; the technical features designed in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that all terms used in the present invention (including technical terms and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs and are not to be construed as limiting the present invention; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Example 1

Referring to fig. 1, in order to solve the problem of inefficiency in replacing the die 21, the present embodiment provides a punching machine comprising a shank 10, an upper die 20, a lower die 30, a die frame 40, and a machine body 60;

referring to fig. 2, the upper die 20 includes a die 21 and an upper die holder 22, a first connecting portion 211 is provided at the top of the die 21, the first connecting portion 211 has a cylindrical structure, and the first connecting portion 211 is located inside a first fixing portion 11 provided at the bottom of the die shank 10; the upper die holder 22 is provided with a plurality of first through holes 221 near the edge, and the first through holes 221 are uniformly distributed around the circle center of the upper die holder 22 so as to install the stamping die 21; a second through hole 222 is formed in the center of the upper die holder 22 to be connected with the die frame 40;

in specific implementation, the first connecting part 211 is movably connected with the first fixing part 11, so that the quick connection and quick removal of the die shank 10 and the die 21 are realized, and the efficiency of replacing the die 21 is improved.

Further, the die 21 is mounted on a first through hole 221 formed in the upper die holder 22 near the edge portion, and the first through holes 221 are uniformly distributed around the center of the upper die holder 22; a plurality of stamping dies 21 with different specifications are arranged on the upper die holder 22 so as to meet different punching requirements.

Referring to fig. 3, in order to complete the punching operation in cooperation with the punch 21, the lower die 30 provided in this embodiment is provided with a plurality of third through holes 31 near the edge portion, the third through holes 31 are uniformly distributed around the center of the lower die 30, the number of the third through holes 31 corresponds to that of the first through holes 221, and the third through holes 31 are disposed opposite to the center of the first through holes 221; a fourth through hole 32 is formed at the center of the lower mold 30 to connect with the mold frame 40.

In specific implementation, the lower die 30 is provided with a plurality of third through holes 31 near the edge, the third through holes 31 are uniformly distributed around the center of the lower die 30, the third through holes 31 correspond to the first through holes 221 in number, and the third through holes 31 are opposite to the center of the first through holes 221; when the punch 21 performs the punching operation, the punching portion of the bottom of the punch 21 passes through the third through hole 31 to complete the work punching.

Referring to fig. 4, in order to improve the positioning accuracy of workpiece punching, the positioning device 50 provided in this embodiment includes a positioning table 51, a scale 52, a slide 53 and a first supporting portion 54, where the positioning table 51 is disposed on the top surface of the table 61 beside the lower die 30, and the first supporting portion 54 is disposed on two sides of the positioning table 51 to support the scale 52 and the slide 53.

In particular, the top surface of the workbench 61 is provided with the positioning device 50, wherein the positioning device 50 comprises a positioning table 51, a scale 52, a slide 53 and a first supporting portion 54, the positioning table 51 is disposed on the top surface of the workbench 61, and the first supporting portion 54 is disposed on two sides of the positioning table 51 to support the scale 52 and the slide 53. The punched workpiece is placed on the top surface of the positioning table 51, and the position of the workpiece is positioned and adjusted through the scale 52 and the slide 53, so that the punching precision of the workpiece is improved.

Referring to fig. 1, in order to perform punching operation in combination with the upper die 20 and the lower die 30, the machine tool body 60 provided in this embodiment is provided with a workbench 61 and a transmission part 62, the positioning device 50 is disposed on the top surface of the workbench 61, the die shank 10 is detachably connected with the transmission part 62, and two ends of the die frame 40 are respectively movably connected with the workbench 61 and the transmission part 62.

In the concrete implementation, two ends of the die carrier 40 are respectively and movably connected with the workbench 61 and the transmission part 62; the upper die 20 and the lower die 30 are mounted above the table 61 by the die frame 40 to perform work punching work.

It should be noted that the die shank 10 is an important component of the punching machine, and is mainly used for connecting the upper die and the press slide.

The upper die 20 is the upper half of the entire set of dies, i.e., the die portion mounted to the drive 62 in the punching machine.

The die 21, also called a punching die, is a tool specially used for metal stamping processing, and has a main function of processing a metal plate material into a part having a specific shape and size by a stamping process.

The upper die holder 22 is a part of the die, and mainly serves to fix the die 21.

The lower die 30 is the lower half of the entire pair of dies, i.e., the die portion mounted on the top surface of the punch table 61.

In the present embodiment, the upper die holder 22 and the lower die holder 30 are both disc-shaped.

The die carrier 40 is a supporting part of the die, and is mainly used for combining and fixing all parts of the die according to certain rules and positions so that the die can be installed on a punching machine to work stably.

A second through hole 222 is formed in the center of the upper die holder 22 to be connected with the die frame 40; a fourth through hole 32 is formed at the center of the lower die 30 to be connected with the die frame 40; the upper die 20 and the lower die 30 are respectively connected with the die frame 40 through a second through hole 222 and a fourth through hole 32, and two ends of the die frame 40 are respectively and movably connected with the workbench 61 and the transmission part 62; the upper mold 20 and the lower mold 30 are rotated synchronously by rotating the mold frame 40.

Optionally, sliding grooves and bearings are provided between the upper die holder 22 and the lower die 30 and the die carrier 40 to achieve a movable link.

Optionally, the upper die holder 22 and the lower die 30 are fixedly connected to the die frame 40 by welding.

Preferably, the upper die base 22 and the lower die 30 are detachably connected to the die frame 40 by bolts.

The work surface for punching work is provided by a work table 61 provided on the machine tool body 60. The punch 21 is driven to perform punching operation by being connected to the shank 10 through a transmission portion 62 provided above the machine tool body 60.

Alternatively, the driving portion 62 is fixedly connected to the die shank 10 by welding.

Preferably, the driving portion 62 is detachably connected to the die shank 10 by bolts.

In this embodiment, the specific punching operation flow of the workpiece is as follows, the workpiece is placed on the top surface of the positioning table 51, and the punching position of the workpiece is positioned and adjusted through the scale 52 and the slide 53; the upper die holder 22 is rotated to align the die 21 with the die shank 10, and the first connecting part 211 is movably connected with the first fixing part 11; the punch 21 is driven downward by the transmission portion 62 to punch the workpiece.

In this embodiment, the first connecting portion 211 is movably connected with the first fixing portion 11, so as to achieve quick connection and quick detachment of the die shank 10 and the die 21, thereby improving the efficiency of replacing the die 21. The workpiece position is positioned and adjusted through the scale 52 and the slide 53, so that the punching precision of the workpiece is improved.

Example two

Referring to fig. 5, in order to achieve the function of replacing the die 21 by rotating the upper die holder 22, the side wall of the first fixing portion 11 provided in this embodiment is provided with an opening 111, the shape of the opening 111 corresponds to the first connecting portion 211, and the position of the opening 111 corresponds to the rotation track of the die 21 on the upper die holder 22.

In particular, by rotating the upper die holder 22, the die 21 moves along the rotation track of the upper die holder 22, and the first connecting portion 211 disposed at the top of the die 21 passes through the opening 111 and enters the first fixing portion 11 to be movably linked with the die shank 10.

In this embodiment, the die 21 can be directly replaced by the rotation of the upper die holder 22 through the opening 111 provided on the side wall of the first fixing portion 11, so that the step of adjusting the height of the die 21 is omitted, and the efficiency of replacing the die 21 is further improved.

Example III

Referring to fig. 6, in order to solve the problem that the die 21 is easy to slide, the die 21 provided in this embodiment further includes a return spring 212, one end of the return spring 214 is connected to the second connecting portion 212, and the other end is connected to the upper die holder 22.

In particular, when the die shank 10 drives the die 21 downward to complete punching, the return spring 214 installed between the second connecting portion 212 and the upper die holder 22 applies a rebound force to the second connecting portion 212, raising the die 21 to the initial position and preventing the die 21 from sliding downward.

Further, in order to keep the height of the die 21 mounted on the upper die holder uniform, the length of the return spring 214 provided in the present embodiment is uniform, ensuring that the height of the top surface of the die 21 mounted on the upper die holder 22 is uniform.

Further, the risk of collision between the first connecting portion 211 and the first fixing portion 11 due to replacement of the die 21 by rotating the upper die holder 22 is avoided.

Example IV

Referring to fig. 7, in order to prevent friction or collision between the return spring 214 and the first fixing portion 11, the die 21 provided in this embodiment further includes a return spring 212 and a second connecting portion 213, the second connecting portion 212 is disposed below the first connecting portion 211, the second connecting portion 212 is in a cylindrical structure, and the diameter of the first connecting portion 211 is larger than that of the second connecting portion 212. The return spring 214 has one end connected to the second connecting portion 212 and the other end connected to the upper die holder 22.

In this embodiment, by providing the second connection portion 212, the top of the return spring 214 is lower than the first fixing portion 11, so that friction or collision between the return spring 214 and the first fixing portion 11 is avoided.

Example five

Referring to fig. 8, in order to prevent the die 21 from shaking and improve the punching accuracy of the die 21, the upper die 20 provided in this embodiment further includes a guide sleeve 23, the guide sleeve 23 is disposed at the bottom of the upper die holder 22, and the guide sleeve 23 is disposed opposite to the center of the first through hole 221.

In specific implementation, the die 21 passes through the guide sleeve 23 arranged at the bottom of the upper die holder 22 to perform punching operation, and the guide sleeve 23 provides a restraining force for the die 21 to ensure that the die 21 moves linearly along the guide sleeve 23.

In this embodiment, the guide sleeve 23 constrains the movement direction of the die 21, so as to prevent the die 21 from shaking during punching operation, and further improve punching accuracy.

Example six

Referring to fig. 9, in order to improve the positioning accuracy after the upper die holder 22 and the lower die 30 rotate, a sixth through hole 511 is formed in the sidewall of the positioning table 51 according to this embodiment to mount a positioning pin 512, and one end of the positioning pin 512 is detachably connected to the first opening 33 formed in the sidewall of the lower die 30.

In particular, the positioning pin 512 passes through the sixth through hole 511 formed in the sidewall of the positioning table 51 and is detachably connected to the first opening 33 formed in the sidewall of the lower die 30, so as to fix the positions of the upper die holder 22 and the lower die 30, and prevent the upper die holder 22 and the lower die 30 from continuing to rotate.

Further, one end of the positioning pin 512 is detachably connected with the first opening 33 formed on the sidewall of the lower die 30, and the other end protrudes out of the sixth through hole 511 formed on the sidewall of the positioning table 51, so as to facilitate the adjustment of the positioning pin 512 by an operator.

In this embodiment, the positioning pins 512 are used to precisely position the upper die holder 22 and the lower die 30, so that the punching holes 21 mounted on the upper die 22 are aligned with the die shank 10 for punching operation, thereby improving the positioning accuracy of the upper die holder 22 and the lower die 30 after rotation and improving the efficiency of aligning the die shank 10 when the die 21 is replaced.

Example seven

Referring to fig. 10, in order to prevent the scale 52 from moving due to collision during positioning of the workpiece, the scale 52 provided in this embodiment includes a first fixing member 521 and a first spacer 522; the first fixing member 521 is mounted on the second opening 541 formed in the top surface of the first supporting portion 54 through the sixth through hole 523 formed in the scale, and the first spacer 522 is disposed between the first fixing member 521 and the scale 52.

In particular, the scale 52 is fixed to the top surface of the first supporting portion 54 by the first fixing member 521, so as to avoid movement of the scale 52 caused by collision during positioning of the workpiece.

Further, the first fixing member 521 is screwed with the first supporting portion 54.

Further, the first fixing member 521 employs a bolt.

In practical implementation, threads are provided on the side wall of the first fixing element 521 and the inner wall of the second opening 541, so as to realize threaded connection between the first fixing element 521 and the first supporting portion 54, and further enable the first fixing element 521 and the first supporting portion 54 to be quickly connected or quickly removed.

Optionally, the first spacer 522 provided in this embodiment employs a spring spacer.

The spring gasket is a compensation part commonly used for bolting, and is generally used in occasions with low requirements on bolt pretightening force and small dynamic load.

The spring washer has a pretension, and the first fixing member 521 is prevented from loosening by a rebound force generated after the spring washer is compressed.

Preferably, the first gasket 522 provided in this embodiment is a flat gasket.

The flat gasket is usually punched from an iron plate, and is generally shaped as a flat gasket, with a through hole formed in the middle. Flat gaskets are often used to reduce friction, prevent leakage, isolate or distribute surface pressure.

The flat gasket disperses the stress generated when the first fixing element 521 is in locking connection with the first supporting part 54, so as to reduce the torsion force required to be applied for dismantling the first fixing element 521, thereby realizing the rapid dismantling of the first fixing element 521 and improving the working efficiency.

Example eight

Referring to fig. 11, in order to facilitate the operator to quickly install and remove the scale 52, the first fixing member 521 provided in this embodiment includes a third connecting portion 5211, a first fixing ring 5212 and a first handle 5213, where the third connecting portion 5211 is fixedly connected to the first fixing ring 5212, and the first handle 5213 is movably connected to the first fixing ring 5212.

In particular, the third connecting portion 5211 is screwed to the first supporting portion 54, and the operator can rotate the first fixing member 521 by rotating the first handle 5213 to apply a torque to the first fixing ring 5212. The first handle 5213 is movably connected with the first fixing ring 5212, so that an operator can conveniently adjust the position of the first handle 5213 at any time.

Further, the first handle 5213 is movably connected to the first fixing ring 5212 by a rotation shaft.

In this embodiment, the first fastening member 521 can be quickly installed or removed by rotating the first handle 5213 without using any other tool. The first handle 5213 is movably connected with the first fixing ring 5212, so that an operator can conveniently adjust the position of the first handle 5213 at any time, and the working efficiency is improved.

Example nine

Referring to fig. 12, in order to prevent the slide 53 from moving due to collision during positioning of the workpiece, the slide 53 provided in the present embodiment includes a second fixing member 531 and a second spacer 532; the second fixing member 531 is installed on the second opening 541 formed in the top surface of the first supporting portion 54 through the limiting groove 533 formed in the slide rule 53, and the second spacer 532 is disposed between the second fixing member 531 and the slide rule 53.

In practice, the second fixing member 531 is mounted on the first supporting portion 54 through the limiting groove 533 formed in the slide rule 53. When the second fixing member 531 is released, the slider 53 moves along the length direction of the limiting groove 533 to adjust the position, and the second fixing member 531 contacts the limiting groove 533 to prevent excessive displacement of the slider 53. The sliding rule 53 is fixed on the top surface of the first supporting portion 54 through the second fixing piece 531, so that the sliding rule 53 is prevented from moving due to collision in the workpiece positioning process.

Further, the second fixing member 531 is screw-coupled to the first supporting portion 54.

Further, the second fixture 531 employs bolts.

In specific implementation, threads are disposed on the side wall of the second fixing member 531 and the inner wall of the second opening 541, so as to realize threaded connection between the second fixing member 531 and the first supporting portion 54, and further enable the second fixing member 531 and the first supporting portion 54 to be quickly connected or quickly removed.

Optionally, the second shim 532 provided in this embodiment employs a spring shim.

Preferably, the second gasket 532 provided in the present embodiment is a flat gasket.

In this embodiment, the second fixing member 531 is fixed on the top surface of the first supporting portion 54, so as to avoid the sliding rule 53 moving due to collision during the workpiece positioning process.

Examples ten

Referring to fig. 13, in order to achieve the purpose of moving the adjustment slide 53 without completely removing the second fixing piece 531, the second fixing piece 531 provided in this embodiment includes a fourth connecting portion 5311, a second fixing ring 5312 and a second handle 5313, where the fourth connecting portion 5311 is fixedly connected to the second fixing ring 5312, and the second handle 5313 is movably connected to the fixing ring 5312.

In particular, the fourth connecting portion 5311 is screwed to the first supporting portion 54, and the operator rotates the first handle 5313 to apply a torque force to the second fixing ring 5312, so as to rotate the second fixing member 531. The second handle 5313 is movably connected with the second fixing ring 5312, so that an operator can conveniently adjust the position of the second handle 5313 at any time.

Further, the second handle 5313 is movably connected to the second fixing ring 5312 by a rotation shaft.

In this embodiment, the second fixing member 531 can be quickly installed or quickly removed by rotating the second handle 5313 without using other tools. The second handle 5313 is movably connected with the second fixing ring 5312, so that an operator can conveniently adjust the position of the second handle 5313 at any time, and the working efficiency is improved.

Example eleven

Referring to fig. 14, in order to prevent the slide 53 and the workpiece from being deviated from the positioning table due to the movement of the center of gravity during the work, the present embodiment provides a second support portion 55 provided outside the first support portion 54 to support the slide 53 and the workpiece in a case where the horizontal placement cannot be maintained.

In particular, one end of the slide 53 is placed on the top surface of the first support 54, and the other end is placed on the top surface 55 of the second support. One end of the workpiece is placed on the top surface of the first support portion 54, and the other end is placed on the top surface 55 of the second support portion.

Further, the first support 54 is level with the top surface of the second support 55 to ensure that the slide 53 and the workpiece are placed horizontally.

In this embodiment, the second supporting portion 55 is provided outside the first supporting portion 54 to provide a second fulcrum for the slide 53 and the workpiece, thereby ensuring that the slide 53 and the workpiece are placed horizontally.

Example twelve

Referring to fig. 15, in order to meet the punching requirements of different punching shapes, the bottom of the die 21 provided in this embodiment is further provided with a punch 214, and the shape of the third through hole 31 corresponds to the punch 214 mounted at the corresponding position.

In practice, the head 214 passes through the third through hole 31 to punch the workpiece. Wherein, the punches 214 with different shapes and the corresponding third through holes 31 are arranged according to the requirements, thereby meeting the punching requirements of different punching shapes.

In summary, compared with the prior art, the punching machine provided by the invention has the advantages that the quick connection and the quick removal of the die shank 10 and the die 21 are realized through the movable connection of the first connecting part 211 and the first fixing part 11, and the efficiency of replacing the die 21 is improved. The workpiece position is positioned and adjusted through the scale 52 and the slide 53, so that the punching precision of the workpiece is improved.

In addition, it should be understood by those skilled in the art that although many problems exist in the prior art, each embodiment or technical solution of the present invention may be modified in only one or several respects, without having to solve all technical problems listed in the prior art or the background art at the same time. Those skilled in the art will understand that nothing in one claim should be taken as a limitation on that claim.

Although terms such as a shank, a fixing portion, an opening, an upper die, a connecting portion, a return spring, a punch, an upper die holder, a through hole, a guide sleeve, a lower die, an opening, a die carrier, a positioning device, a positioning table, a positioning pin, a scale, a fixing member, a fixing ring, a handle, a spacer, a slide, a limit groove, a supporting portion, a machine tool body, a table, a transmitting portion, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention; the terms first, second, and the like in the description and in the claims of embodiments of the invention and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. A punching machine, characterized in that: comprises a die handle (10), an upper die (20), a lower die (30), a die carrier (40), a positioning device (50) and a machine tool body (60);

the upper die (20) comprises a die (21) and an upper die holder (22), a first connecting part (211) is arranged at the top of the die (21), and the first connecting part (211) is positioned in a first fixing part (11) arranged at the bottom of the die handle (10); a plurality of first through holes (221) are formed in the part, close to the edge, of the upper die holder (22), and the first through holes (221) are uniformly distributed around the circle center of the upper die holder (22) so as to install the stamping die (21); a second through hole (222) is formed in the center of the upper die holder (22) so as to be connected with the die frame (40);

a plurality of third through holes (31) are formed in the lower die (30) near the edge, the third through holes (31) are uniformly distributed around the center of the lower die (30), the number of the third through holes (31) corresponds to that of the first through holes (221), and the third through holes (31) are arranged opposite to the center of the first through holes (221); a fourth through hole (32) is formed in the center of the lower die (30) so as to be connected with the die frame (40);

the machine tool comprises a machine tool body (60), a positioning device (50), a die shank (10) and a transmission part (62), wherein the machine tool body (60) is provided with a workbench (61) and the transmission part (62), the positioning device (50) is arranged on the top surface of the workbench (61), the die shank (10) is detachably connected with the transmission part (62), and two ends of the die frame (40) are respectively and movably connected with the workbench (61) and the transmission part (62);

the positioning device (50) comprises a positioning table (51), a scale (52), a slide rule (53) and a first supporting portion (54), wherein the positioning table (51) is arranged on the top surface of the workbench (61), and the first supporting portion (54) is arranged on two sides of the positioning table (51) so as to support the scale (52) and the slide rule (53).

2. A punching machine according to claim 1, characterized in that: the first fixing part (11) is provided with an opening (111), the shape of the opening (111) corresponds to that of the first connecting part (211), and the position of the opening (111) corresponds to that of the die (21) located on the rotating track of the upper die holder (22).

3. A punching machine according to claim 1, characterized in that: the die (21) further comprises a return spring (212), one end of the return spring (214) is connected with the second connecting portion (212), and the other end of the return spring is connected with the upper die holder (22).

4. A punching machine according to claim 1, characterized in that: the die (21) further comprises a reset spring (212) and a second connecting part (213), the second connecting part (212) is arranged below the first connecting part (211), the second connecting part (212) is in a cylindrical structure, and the diameter of the first connecting part (211) is larger than that of the second connecting part (212);

one end of the return spring (214) is connected with the second connecting part (212), and the other end of the return spring is connected with the upper die holder (22).

5. A punching machine according to claim 1, characterized in that: the upper die (21) further comprises a guide sleeve (23), the guide sleeve (23) is arranged at the bottom of the upper die holder (22), and the guide sleeve (23) and the center of the first through hole (221) are arranged oppositely.

6. A punching machine according to claim 1, characterized in that: a sixth through hole (511) is formed in the side wall of the positioning table (51) so as to install a positioning pin (512), and one end of the positioning pin (512) is detachably connected with a first opening (33) formed in the side wall of the lower die (30).

7. A punching machine according to claim 1, characterized in that: the scale (52) comprises a first fixing member (521) and a first spacer (522); the first fixing piece (521) penetrates through a sixth through hole (523) formed in the scale and is mounted on a second opening (541) formed in the top surface of the first supporting portion (54), and the first gasket (522) is arranged between the first fixing piece (521) and the scale (52).

8. A punching machine according to claim 1, characterized in that: the slide rule (53) comprises a second fixing piece (531) and a second gasket (532); the second fixing piece (531) penetrates through the limit groove (533) formed in the sliding rule (53) and is installed in the second opening (541) formed in the top surface of the first supporting portion (54), and the second gasket (532) is arranged between the second fixing piece (531) and the sliding rule (53).

9. A punching machine according to claim 1, characterized in that: a second supporting portion (55) is arranged outside the first supporting portion (54) to support the slide rule (53) and the workpiece.

10. A punching machine according to claim 1, characterized in that: the bottom of the die (21) is also provided with a punch (214), and the shape of the third through hole (31) corresponds to that of the punch (214) arranged at the corresponding position.