CN210282561U

CN210282561U - Pneumatic gun punches

Info

Publication number: CN210282561U
Application number: CN201921099959.XU
Authority: CN
Inventors: 高志成
Original assignee: Sihui Yanchuang Electrical Appliance Co ltd
Current assignee: Sihui Yanchuang Electrical Appliance Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-04-10
Anticipated expiration: 2029-07-12

Abstract

The utility model provides a pneumatic gun punches, which comprises a body, starting drive, hold power device, filling device and retooling device, the body includes the rifle body, the front end housing, rear end cap and stock, the rifle body is equipped with the air cavity, be equipped with respectively in the air cavity and hold power device, filling device and retooling device, the stock set up in one side of the rifle body and with rifle body fixed connection, the one side of the rifle body is kept away from to the stock is equipped with air inlet and gas vent respectively, air inlet and gas vent extend formation inlet channel and exhaust passage along the length direction of stock respectively, be equipped with the control chamber on the stock, the control chamber is equipped with starting drive, starting drive includes brake valve lever, connecting rod and control flap. The utility model discloses a setting of tank filler sleeve for hydraulic oil and hydraulic pressure pipeline make the function of whole device more perfect together, can also change hydraulic oil, make the process of changing convenient and fast; through the cooperation of the valve control valve and the valve rod, the whole device has high controllability.

Description

Pneumatic gun punches

Technical Field

The utility model relates to a drilling equipment field especially relates to a pneumatic gun punches.

Background

At present, plastics, the pneumatic puncher structure of blanking that the paper article carried out porous blanking and use is complicated, the structure reproducibility is low, lead to product development cycle length, delivery date is slow, high in production cost, and because poor stability, it is short-lived, cause the pass precision of punching to be low, easily produce badly, be unfavorable for production, in addition, in the actual work, in order to guarantee the quality of punching, the staff often need fix a position by die-cut article in addition, guarantee by the stability of die-cut article, we have designed a neotype pneumatic puncher that can punch high-efficiently for this reason.

For example, the CN204234792U prior art discloses a cutting system for inner blind holes of a perforating gun, which needs a large number of pipes used in the construction of oil fields, and when the pipes are used, the inner cavity of the pipe needs to be punched, and the punched holes on the pipe are divided into inner blind holes and outer blind holes, and many pipes are processed by using the outer blind holes before, the outer blind holes are often poorer in directionality during the use, the inner blind holes have better directionality and a better blasting effect than the outer blind holes, because the inner blind holes are punched outwards inside the barrel, because the inner space is narrow, the inner hole of the barrel is generally between 70-200mm, the length of the barrel is relatively longer, generally between 1000 and 5000mm, the inner blind holes are distributed spirally in the axial direction inside the barrel, and are divided into left-handed and right-handed, and the radial distribution is divided into 60 degrees, 90 degrees and the like, and the cutting system adopts a mechanical cutting head in the processing of, the mechanical cutting head is driven by a motor, a coupler, a transmission shaft, a bevel gear pair and a cutting tool, the transmission is limited by space, so that the transmission shaft is long and thin, the rigidity is poor, the number of faults is large, the cutting efficiency is low, and a workpiece feeding system adopts hydraulic drive to integrally push a workpiece to realize feeding motion. The feeding mode is not easy to fix, easy to generate vibration and easy to damage the cutter because the workpiece is long and needs to move together with the indexing system.

Another typical type of hole punch disclosed in the prior art of JP2004009231A is a double-hole type hole punch in which the cutting edge at the tip of the punching shaft is positioned at the same height and is always operated in synchronization, and the operating force is equally distributed in each punching shaft when a hole is formed in a plurality of sheets of paper. Therefore, particularly in a state where the operation handle is erected and the torque arm in the pressing direction (i.e., the horizontal direction distance of the handle) is short, a considerable operation force is required at a time, which causes a problem of heavy operation load. In order to reduce the operating force, it is conceivable to provide a long operating lever, set a long length from the center of rotation to the point of application of the operating force, or increase the weight of the operating lever. Meanwhile, the punching efficiency is not high, and the punching machine is not convenient to carry.

Turning to a hole punch as disclosed in the prior art of EP2364244a1, the hole punch is used to form a through hole in the paper to allow a user to place the paper in the binder. Typically, a hole punch includes one or more punches that act with a handle, whereby the action of the handle causes the punches to pierce the paper and form a hole. Hole punches are typically configured such that a user must pivot a handle to cause a punch to pierce a paper. As more paper bits are punched, the force necessary to form the hole increases, and the pivoting movement of the handle may become more difficult and may not be possible to punch a large stack of paper. The piercer may also be cumbersome and difficult to store in a small working space. The operation of punching needs manpower, has restricted the efficiency of punching greatly.

The utility model discloses made in order to solve the ubiquitous manual operation of perforating equipment universal adoption in this field, the aperture of punching is too single and the inefficiency scheduling problem of punching.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic gun punches to the not enough that exists in the aspect of the present rifle punches.

In order to overcome the defects of the prior art, the utility model adopts the following technical scheme:

a punching pneumatic gun comprises a body, a starting device, a force storage device, an oiling device and a mold changing device, wherein the body comprises a gun body, a front end cover, a rear end cover and a gun handle, the gun body is provided with an air cavity, the force storage device, the oiling device and the mold changing device are respectively arranged in the air cavity, the gun handle is arranged on one side of the gun body and fixedly connected with the gun body, one side of the gun handle, which is far away from the gun body, is respectively provided with an air inlet and an air outlet, the air inlet and the air outlet respectively extend along the length direction of the gun handle to form an air inlet channel and an air outlet channel, the gun handle is provided with a control cavity, the control cavity is provided with the starting device, the starting device comprises a control handle, a connecting rod and a control valve, the control handle is hinged with one end of the connecting rod, and the other end of the connecting, the control valve is respectively communicated with the inside of the air inlet channel and the inside of the exhaust channel, the power storage device comprises a piston rod, a pushing plug, a first spring and a fixed disc, the piston rod is respectively coaxially arranged with the pushing plug and the fixed disc, the first spring is nested with the piston rod, two ends of the first spring are respectively abutted against the fixed disc and the pushing plug, one end of the piston rod is fixedly connected with the pushing plug, the other end of the piston rod penetrates through the fixed plate, one side of the fixed plate, which is far away from the piston rod, is provided with an oiling device, the oiling device comprises an oil storage pipe and an oil storage cavity, the piston rod is coaxially arranged with the oil storage cavity and extends into the oil storage cavity, the fixed plate is fixedly connected with the outer wall of the oil storage pipe, the upper top surface of the oil storage pipe is provided with an oil filling hole, and the oil, and one side of the refueling device, which is far away from the power storage device, is provided with a locking nut, and the locking nut is coaxially arranged with the oil storage pipe and movably clamped with the gun body.

Optionally, one end of the control handle is hinged to the gun body, and the other end of the control handle extends out towards the side far away from the gun handle.

Optionally, the air inlet channel and the air outlet channel are parallel to each other, the air inlet channel and the air outlet channel are respectively provided with a retention air cavity, and the inner walls of the retention air cavities close to one ends of the air inlet and the air outlet are respectively provided with threads.

Optionally, the die changing device comprises a lower die sleeve, a punching needle and a second spring, the die changing device is provided with a second through hole, and the periphery of the punching needle is nested in the second spring and is arranged in the second through hole of the die changing device.

Optionally, the lower die sleeve and the die changing device are coaxially arranged and fixedly connected with the inner wall of the second through hole.

Optionally, the periphery of the connecting rod is respectively provided with an air inlet groove and an air outlet groove, the air inlet groove and the air outlet groove are respectively arranged along the circumference of the connecting rod, and the intervals of the air inlet groove and the air outlet groove are matched with the intervals of the air inlet channel and the air outlet channel.

Optionally, the inner wall of the oil filling hole of the oil storage pipe is provided with threads, and the oil storage pipe is provided with a sealing cover which is in clamping connection with the threads of the oil filling hole.

Optionally, the air inlet with the gas vent is equipped with the joint recess respectively, joint strip is inlayed to the inner wall of joint recess, joint strip and the coaxial setting of air inlet.

The utility model discloses the beneficial effect who gains is:

1. the punching operation of the whole equipment is ensured to be safer by adopting the independent air inlet channel and the independent air outlet channel;

2. through the arrangement of the oil filling hole, the functions of the whole device are more perfect due to the hydraulic oil and the hydraulic pipeline, and meanwhile, the hydraulic oil can be replaced, so that the replacement process is convenient and rapid;

3. through the arrangement of the lower die sleeve of the die changing device, the die head in the upper die can be guaranteed to be disassembled and replaced, the hole diameter of a punching position can be conveniently changed, and different application scenes are increased;

4. through the cooperation of the valve control valve and the valve rod, the whole device has high controllability.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

Fig. 1 is the structural schematic diagram of the pneumatic gun for punching of the utility model.

Fig. 2 is a schematic structural diagram of a position a in fig. 1 according to the present invention.

Fig. 3 is the schematic structural diagram of the pneumatic gun for punching when the piston rod is compressed.

Fig. 4 is a schematic structural diagram of the air inlet channel and the air outlet channel of the pneumatic perforating gun of the present invention.

Detailed Description

In order to make the objects and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following embodiments thereof; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper" and "lower" and "left" and "right" etc., it is only for convenience of description and simplification of the present invention based on the orientation or positional relationship shown in the drawings, but it is not intended to indicate or imply that the device or assembly referred to must have a specific orientation.

The first embodiment is as follows: a punching pneumatic gun comprises a body, a starting device, a force accumulating device, an oil filling device and a die changing device, wherein the body comprises a gun body, a front end cover 15, a rear end cover 21 and a gun handle 19, the gun body is provided with an air cavity, the air cavity is internally provided with the force accumulating device, the oil filling device and the die changing device respectively, the gun handle is arranged at one side of the gun body and fixedly connected with the gun body, one side of the gun handle far away from the gun body is provided with an air inlet 1 and an air outlet 2 respectively, the air inlet and the air outlet extend along the length direction of the gun handle to form an air inlet channel 23 and an air outlet channel 24 respectively, the gun handle is provided with a control cavity 5, the control cavity 5 is provided with the starting device, the starting device comprises a control handle 3, a connecting rod and a control valve 4, the control handle 3 is hinged with one end of the connecting rod, and the other end of the connecting rod is, the control valve 4 is respectively communicated with the inside of the air inlet channel and the inside of the exhaust channel, the power storage device comprises a piston rod 9, a pushing plug 7, a first spring 8 and a fixed disc 10, the piston rod 9 is respectively coaxially arranged with the pushing plug 7 and the fixed disc 10, the first spring 8 is nested with the piston rod 9, two ends of the first spring 8 are respectively supported on the fixed disc 10 and the pushing plug 7, one end of the piston rod 9 is fixedly connected with the pushing plug 7, the other end of the piston rod 9 penetrates through the fixed plate, one side of the fixed plate, which is far away from the piston rod 9, is provided with an oil filling device, the oil filling device comprises an oil storage pipe and an oil storage cavity 12, the piston rod 9 is coaxially arranged with the oil storage cavity 12 and extends into the oil storage cavity 12, the fixed plate is fixedly connected with the outer wall of the oil storage pipe, and the upper top surface of the oil storage, the oil filling hole is communicated with the interior of the oil storage cavity 12, one side of the oil filling device, which is far away from the power storage device, is provided with a locking nut, and the locking nut is coaxially arranged with the oil storage pipe and movably clamped with the gun body. One end of the control handle is hinged with the gun body, and the other end of the control handle extends out towards one side far away from the gun handle. The air inlet channel 23 and the air outlet channel 24 are parallel to each other, the air inlet channel and the air outlet channel are respectively provided with a retention air cavity, and the inner walls of the retention air cavities close to one ends of the air inlet 1 and the air outlet 2 are respectively provided with threads. The die changing device comprises a lower die sleeve 18, a punching needle 17 and a second spring 16, the die changing device is provided with a second through hole, and the periphery of the punching needle 17 is nested in the second spring 16 and is arranged in the second through hole of the die changing device 20. The lower die sleeve 18 and the die changing device 20 are coaxially arranged and fixedly connected with the inner wall of the second through hole. The periphery of the connecting rod is respectively provided with an air inlet groove 26 and an air outlet groove 27, the air inlet groove 26 and the air outlet groove 27 are respectively arranged along the circumference of the connecting rod, and the intervals of the air inlet groove 26 and the air outlet groove 27 are matched with the intervals of the air inlet channel 23 and the air outlet channel 24. The inner wall of the oil filling hole of the oil storage pipe is provided with threads, and the oil storage pipe is provided with a sealing cover which is in clamping connection with the threads of the oil filling hole for sealing. Air inlet 1 with gas vent 2 is equipped with the joint recess respectively, joint strip is inlayed to the inner wall of joint recess, joint strip and the coaxial setting of air inlet 1.

Example two: a punching pneumatic gun comprises a body, a starting device, a power storage device, an oil filling device and a die changing device, wherein the body comprises a gun body, a front end cover 15, a rear end cover 21 and a gun handle 19, the gun body is provided with an air cavity 22, the power storage device, the oil filling device and the die changing device are respectively arranged in the air cavity, the gun handle is arranged on one side of the gun body and fixedly connected with the gun body, one side of the gun handle, far away from the gun body, is respectively provided with an air inlet 1 and an air outlet 2, the air inlet and the air outlet respectively extend along the length direction of the gun handle to form an air inlet channel 23 and an air outlet channel 24, the gun handle is provided with a control cavity 5, the control cavity 5 is provided with the starting device, the starting device comprises a control handle 3, a connecting rod and a control valve 4, the control handle 3 is hinged with one end of the connecting rod, and the other end of the connecting rod, the control valve 4 is respectively communicated with the inside of the air inlet channel and the inside of the exhaust channel, the power storage device comprises a piston rod 9, a pushing plug 7, a first spring 8 and a fixed disc 10, the piston rod 9 is respectively coaxially arranged with the pushing plug 7 and the fixed disc 10, the first spring 8 is nested with the piston rod 9, two ends of the first spring 8 are respectively supported on the fixed disc 10 and the pushing plug 7, one end of the piston rod 9 is fixedly connected with the pushing plug 7, the other end of the piston rod 9 penetrates through the fixed plate, one side of the fixed plate, which is far away from the piston rod 9, is provided with an oil filling device, the oil filling device comprises an oil storage pipe and an oil storage cavity 12, the piston rod 9 is coaxially arranged with the oil storage cavity 12 and extends into the oil storage cavity 12, the fixed plate is fixedly connected with the outer wall of the oil storage pipe, and the upper top surface of the oil storage, the oil filling hole is communicated with the interior of the oil storage cavity 12, one side of the oil filling device, which is far away from the power storage device, is provided with a locking nut, and the locking nut is coaxially arranged with the oil storage pipe and movably clamped with the gun body. Specifically, the gun body is a hollow barrel, the inner walls of the gun body are arranged in parallel, threads are arranged on the peripheries of the gun body, which are close to the front end cover 15 and the rear end cover 21, and the front end cover 15 and the rear end cover 21 can be fastened and connected with the gun body through the threads. When the control handle is pressed down, the connecting rod enters the control cavity of the gun handle, at the moment, compressed air of the air inlet enters the control cavity and enters the gun body through the air channel, the piston rod 9 in the gun body is pushed by the compressed air to realize forward pushing, and in the pushing process, the hydraulic oil can generate pressure on the piston in front of the piston to further push a workpiece to perform punching operation. When compressed air enters the gun body, the outlet of the gas channel connected with the gun body is arranged below the piston rod 9, so that all other compressed air entering the gun body can push the piston rod 9 to move.

One end of the control handle 3 is hinged with the gun body, and the other end of the control handle 3 extends towards one side far away from the gun handle. Specifically, the arrangement of the control handle 3 enables the operator to save more labor and to press the button more smoothly in the pressing process. When the control handle 3 rotates along the hinged position of the gun body, the connecting rod can be driven to move in the rotating process, and then the control operation of the control valve is driven, so that the operations of ventilation and exhaust are realized.

The air inlet channel 23 and the air outlet channel 24 are parallel to each other, the air inlet channel and the air outlet channel are respectively provided with a retention air cavity, and the inner walls of the retention air cavities close to one ends of the air inlet 1 and the air outlet 2 are respectively provided with threads. Specifically, the exhaust passage 23 and the air inlet passage 24 are different pore passages, so that no conflict is generated in the air inlet process, and when the valve control handle is pressed down and then suddenly released, the exhaust passage 23 and the air inlet passage 24 can be independently opened, so that the valve control handle has the characteristic of being safer. The exhaust duct 23 and the intake duct 27 in this embodiment are parallel to each other and work independently, making the most of the space of the gun holder, and in another embodiment, the exhaust duct 23 or the intake duct 24 may be disposed in a non-parallel state. In addition, in this embodiment, the exhaust passage 24 and the air inlet passage 24 are parallel to each other, so that the air inlet and outlet processes are both arranged on the same side, and the influence of the hand grasping on the exhaust passage 24 is prevented.

The die changing device comprises a lower die sleeve 18, a punching needle 17 and a second spring 16, wherein the die changing device 20 is provided with a second through hole, and the periphery of the punching needle 17 is nested in the second spring 16 and is arranged in the second through hole of the die changing device 20. The lower die sleeve 18 and the die changing device 20 are coaxially arranged and fixedly connected with the inner wall of the second through hole. Specifically, the front end cover 15 is provided with a lock nut so that the die changing device 20 is more convenient to fixedly connect with the front end cover 15, and when die heads of different models and sizes need to be changed, the changing process is more time-saving and labor-saving. The punching needle 17 extends forwards under the action of the hydraulic oil, the hydraulic oil drives the punching needle 17 in the process that the piston rod 9 extends forwards and compresses the hydraulic oil, and the punching needle 17 abuts against a die head in the front side, so that the die head performs punching operation. One end of the

second spring

16,9 abuts against the inner wall of the second duct, the other end of the second spring 16 abuts against the punch pin 10, and the second spring 16 is compressed during the forward movement of the punch pin 10. In the process of forward movement of the punch pin 10, the second spring 16 accumulates force, and when the control handle 3 is pressed down and the piston rod 9 exits from the base of the piston rod 9, the second spring 16 restores to the original state, so that the punch pin 17 returns to the original position, wherein the original state is when the punch pin is not pushed by the piston rod 9. The second through hole is a space reserved in the extrusion process of the die changing device 20 in the process of extruding the hydraulic oil, and stress contact between the die changing device 20 and the oil changing device is guaranteed.

The periphery of the connecting rod is respectively provided with an air inlet groove 26 and an air outlet groove 27, the air inlet groove 26 and the air outlet groove 27 are respectively arranged along the circumference of the connecting rod, and the intervals of the air inlet groove 26 and the air outlet groove 27 are matched with the intervals of the air inlet channel 23 and the air outlet channel 24. Specifically, when the control handle is controlled, the air inlet groove 26 and the air outlet groove 27 are aligned with the air inlet channel 23, so that compressed air enters the air cavity 22 and pushes the movable plug 7 to move. In the process, the vent groove 26 is in a sealed state. In addition, when the control handle 3 is in an unactuated state, the exhaust duct is aligned with the exhaust groove, so that the gas in the gas chamber 22 can be smoothly exhausted from the gas chamber 22. In addition, the intervals between the air inlet groove 26 and the air outlet groove 27 are equal to the intervals between the air inlet channel 23 and the air outlet channel 24, so that one of the two states of the air inlet groove and the air outlet groove is necessarily in a conducting state, and the two states of the air inlet groove and the air outlet groove are not in a state of conducting at the same time, so that the whole compressed air can be efficiently utilized.

The inner wall of the oil filling hole of the oil storage pipe is provided with threads, and the oil storage pipe is provided with a sealing cover which is in clamping connection with the threads of the oil filling hole for sealing. Specifically, the thread enables the sealing cover to be capable of sealing with the thread, so as to prevent leakage of the hydraulic oil in use.

Air inlet 1 with gas vent 2 is equipped with the joint recess respectively, joint strip is inlayed to the inner wall of joint recess, joint strip and the coaxial setting of air inlet 1. In particular, the sealing rubber strip is added, so that all the compressed air can act on the piston rod 9 and can be pushed when the compressed air enters the gun body. That is, the compressed air acts entirely on the piston rod 9, so that the piston rod 9 can be moved in the direction of the oil filling device. In this embodiment the movable stopper 7 on the piston rod 9 is provided with a sealing groove, the sealing groove is along the periphery of the movable stopper 7 is provided, the depth of the sealing groove is smaller than the circumference of the sealing ring of the movable stopper 7, so that the piston rod sealing ring protrudes outside and seals with the inner wall of the gun body, and the compressed air is ensured to be completely acted on the piston rod 9. In addition, the sealing rubber strip arranged on the inner wall of the air inlet 1 enables all compressed air to pass through the air inlet channel 23, and air inlet and exhaust operations are realized under the on-off operation of the control handle 3.

As shown in fig. 4, the exhaust passage 24 and the intake passage 23 are different ducts, so that no conflict is generated during the air intake process, and when the control handle 3 is pressed down and then released suddenly, the exhaust passage 24 and the intake passage 23 can be separated independently, thereby having the characteristic of higher safety. The exhaust duct 24 and the intake duct 23 in this embodiment are parallel to each other and operate independently, making full use of the space of the gun holder 19, and in another embodiment, the exhaust duct 23 or the intake duct 24 may be disposed in a non-parallel state. In addition, in this embodiment, the exhaust channel 24 and the air inlet channel 23 are parallel to each other, so that the air inlet and outlet processes are both arranged on the same side, and the influence of the hand grasping on the exhaust channel 23 is prevented. Intake passage 23 with exhaust duct 24's interior border is equipped with latch device 28, latch device 28 can carry out the joint with breather pipe, guarantees that compressed air can get into in the intake passage 23.

In summary, the punching pneumatic gun of the utility model adopts the independent air inlet channel and the independent air exhaust channel, so as to ensure the safer punching operation of the whole device; the hydraulic oil is refueled through the refueling port, and meanwhile, the hydraulic oil in the hydraulic cylinder can be replaced; through the arrangement of the lower die sleeve of the die changing device, the die head in the upper die can be guaranteed to be disassembled and replaced, the hole diameter of a punching position can be conveniently changed, and different application scenes are increased; the whole equipment has high controllability through the matching of the valve control valve and the valve rod; through the setting of tank filler sleeve for hydraulic oil and hydraulic pressure pipeline are together with the perfect that makes the function of whole device more, simultaneously, can also change hydraulic oil, make the process convenient and fast who changes.

Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described, and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many elements are examples and do not limit the scope of the disclosure or claims.

Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.

In conclusion, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that these examples are illustrative only and are not intended to limit the scope of the invention. After reading the description of the present invention, the skilled person can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope of the present invention defined by the claims.

Claims

1. A punching pneumatic gun comprises a body, a starting device, a force storage device, an oil filling device and a die changing device and is characterized in that the body comprises a gun body, a front end cover (15), a rear end cover (21) and a gun handle (19), the gun body is provided with an air cavity, the force storage device, the oil filling device and the die changing device are respectively arranged in the air cavity, the gun handle is arranged on one side of the gun body and fixedly connected with the gun body, an air inlet (1) and an air outlet (2) are respectively arranged on one side, far away from the gun body, of the gun handle, the air inlet and the air outlet respectively extend along the length direction of the gun handle to form an air inlet channel (23) and an air outlet channel (24), a control cavity (5) is arranged on the gun handle, the starting device is arranged on the control cavity (5), and comprises a control handle (3), a connecting rod and a control valve (4), the control handle (3) is hinged with one end of the connecting rod, the other end of the connecting rod is coaxially arranged with the control valve (4), the control valve (4) is respectively communicated with the air inlet channel and the exhaust channel, the power storage device comprises a piston rod (9), a pushing plug (7), a first spring (8) and a fixed disc (10), the piston rod (9) is respectively coaxially arranged with the pushing plug (7) and the fixed disc (10), the first spring (8) is nested with the piston rod (9), the two ends of the first spring (8) are respectively abutted against the fixed disc (10) and the pushing plug (7), one end of the piston rod (9) is fixedly connected with the pushing plug (7), the other end of the piston rod (9) penetrates through the fixed plate, one side of the fixed plate, which is far away from the piston rod (9), is provided with an oiling device, the refueling device is including holding oil pipe and oil storage chamber (12), piston rod (9) with oil storage chamber (12) coaxial setting stretches into in oil storage chamber (12), the fixed plate with oil storage pipe's outer wall fixed connection, oil storage pipe's last top surface is equipped with the tank filler sleeve, the tank filler sleeve with oil storage chamber (12) inside switches on, refueling device keeps away from one side of holding power device is equipped with lock nut, lock nut with oil storage pipe coaxial setting and with rifle body activity joint.

2. The perforating pneumatic gun as recited in claim 1 wherein one end of said control handle is hingedly connected to said gun body and the other end of said control handle extends away from said gun grip.

3. A perforating air gun as claimed in claim 1, characterized in that said air inlet channel (23) and said air outlet channel (24) are parallel to each other, said air inlet channel and said air outlet channel being provided with respectively stagnant air chambers, the inner walls of said stagnant air chambers near the ends of said air inlet (1) and said air outlet (2) being provided with respectively threads.

4. A perforating pneumatic gun as claimed in claim 1, characterized in that said die changing device (20) comprises a lower die sleeve (18), a punch pin (17) and a second spring (16), said die changing device (20) being further provided with a second through hole, said punch pin (17) being peripherally nested in said second spring (16) and being arranged in said second through hole of said die changing device (20).

5. A pneumatic perforating gun as claimed in claim 4, characterized in that said lower die sleeve (18) is arranged coaxially with said die changing device (20) and is fixedly connected to the inner wall of said second through hole.

6. A perforating pneumatic gun as claimed in claim 1, characterized in that the connecting rod is provided at its periphery with an air inlet groove (26) and an air outlet groove (27), respectively, said air inlet groove (26) and said air outlet groove (27) being provided along the circumference of said connecting rod, respectively, the spacing of said air inlet groove (26) and said air outlet groove (27) matching the spacing of said air inlet passage (23) and said air outlet passage (24).

7. A perforating pneumatic gun as claimed in claim 1, characterized in that the inner wall of the filler opening of the reservoir (11) is threaded, and the reservoir is provided with a sealing cap for snap-fitting sealing with the thread of the filler opening.

8. The pneumatic perforating gun as claimed in claim 1, characterized in that the air inlet (1) and the air outlet (2) are respectively provided with a clamping groove, the inner wall of the clamping groove is embedded with a sealing rubber strip, and the sealing rubber strip is coaxial with the air inlet (1).