CN112338859A

CN112338859A - Pneumatic pin remover

Info

Publication number: CN112338859A
Application number: CN202011190680.XA
Authority: CN
Inventors: 张洪丽; 姜武杰
Original assignee: Shandong Jiaotong University
Current assignee: Shandong Jiaotong University
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-09

Abstract

Pneumatic round pin ware of tearing open, including the cylinder jacket, cylinder protecgulum and cylinder hou gai are installed respectively at the both ends of cylinder jacket, and the striking piston that can remove along it is installed in the inside cooperation of cylinder jacket still, and the striking piston is divided into air intake chamber and spring compression chamber with cylinder jacket inside, still install the striking axle between cylinder protecgulum and the cylinder hou gai, the striking axle passes the striking piston and arranges along the length direction of cylinder jacket, and the inside exhaust chamber that is equipped with of striking axle that is located cylinder hou gai one end, sets up the exhaust hole on the striking axle of exhaust chamber periphery. The invention has the positive effects that: according to the pneumatic pin remover, the spring drives the impact piston to collide with the impact shaft to extract the pin shaft, the impact shaft and the pin shaft are driven to vibrate due to the impact while the pin shaft is pulled out by applying an axial force, and the pin shaft can be separated from a connecting position more conveniently under the condition that the pin shaft which is installed in an interference fit manner and the pin shaft are rusted after being installed, so that the pin removing efficiency is improved, and the pin removing quality is ensured.

Description

Pneumatic pin remover

Technical Field

The invention relates to the technical field of pin disassembling equipment, in particular to a pneumatic pin disassembling device.

Background

The pin shaft is used for positioning, connecting or fastening parts, has a function of lifting weight in the connection of mechanical parts, is widely applied to the field of mechanical connection as cylindrical pins and pin shafts of common fasteners, and other parts, generally, in order to ensure the connection firmness degree, the pin shaft is basically installed by transition or interference fit, but the subsequent pin maintenance and removal operation is relatively troublesome.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a pneumatic pin remover, in which a pin shaft is pulled out by collision between a percussion piston and a percussion shaft, and the pin shaft is vibrated by the collision while being pulled out by applying an axial force to the pin shaft, thereby improving pin removal efficiency and pin removal quality.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a pneumatic pin remover, which comprises a cylinder sleeve, wherein a cylinder front cover and a cylinder rear cover are respectively arranged at two ends of the cylinder sleeve, a percussion piston capable of moving along the cylinder sleeve is also arranged in the cylinder sleeve in a matching manner, the percussion piston divides the interior of the cylinder sleeve into an air inlet cavity and a spring compression cavity, a percussion shaft is also arranged between the cylinder front cover and the cylinder rear cover, the percussion shaft penetrates through the percussion piston and is arranged along the length direction of the cylinder sleeve, an exhaust cavity is arranged in the percussion shaft positioned at one end of the cylinder rear cover, an exhaust hole is formed in the percussion shaft at the periphery of the exhaust cavity, the exhaust hole is communicated with the air inlet cavity, a solenoid valve is arranged on the cylinder rear cover through a counterpiece corresponding to the position of the exhaust cavity, an air inlet of the solenoid valve is communicated with the exhaust cavity, a silencer is arranged on the exhaust hole of the solenoid valve, a limit convex edge is also arranged on, corresponding to the position of striking connecting block, still fixed mounting has the striking board on the striking piston, be equipped with the spring of suit in the striking axle periphery in the spring compression intracavity, the spring is located between cylinder protecgulum and the striking piston, and the one end that the striking axle stretches out the cylinder protecgulum is installed and is passed through the screw rod, still set up the air vent with spring compression chamber UNICOM on the cylinder protecgulum, then set up the inlet port with inlet chamber UNICOM behind the cylinder on covering, the spring can promote the striking piston and collide with the striking axle, makes the transition screw rod be close to the cylinder protecgulum and removes. And a limiting cylinder is arranged in the spring compression cavity, and the spring is positioned in the limiting cylinder. The periphery of an impact shaft between the transition screw and the cylinder front cover is further sleeved with a limiting nut, a limiting pin is installed in the limiting nut, the limiting nut can be fixed on the transition screw by the limiting pin, and a first rubber pad is further arranged between the limiting nut and the cylinder front cover. And a second rubber pad is sleeved on the periphery of the impact shaft between the impact connecting block and the rear cover of the cylinder. The striking axle periphery of spacing protruding edge one side is equipped with the screw thread, has seted up matched with screw hole in the striking connecting block, and the striking connecting block passes through screw-thread fit and installs on the striking axle. The both ends of striking piston periphery all are equipped with first sealing washer, and first sealing washer and the sealed cooperation of cylinder jacket inner wall are equipped with the second sealing washer in the striking piston inner periphery, and the sealed cooperation of second sealing washer and striking axle periphery. Install first oiliness copper sheathing between cylinder protecgulum and the impact shaft, install second oiliness copper sheathing between percussion piston and the impact shaft, install third oiliness copper sheathing between cylinder back cover and the impact shaft. Cover installation support beam barrel behind the cylinder, solenoid valve and muffler all are located support beam barrel, the one end fixed mounting of support beam barrel covers behind the cylinder, and the other end of support beam barrel is equipped with the blast pipe, and the blast pipe communicates with the gas vent of solenoid valve mutually. Be equipped with the pneumatic round pin ware support of tearing open in blast pipe one end position department, move and tear round pin ware support open and include the bottom plate, install the grudging post of vertical setting on the bottom plate, install elevating gear on the grudging post, elevating gear includes the casing, installs intermeshing's worm and worm wheel in the casing, and wherein worm one end is stretched out the casing and is installed the carousel, install the handle on the carousel, coaxial arrangement has the lead screw of vertical setting on the worm wheel, and at the slide rail of the vertical setting of grudging post side-mounting, the slider that can follow its vertical removal is installed in the cooperation on the slide rail, slider one side-mounting link is equipped with on the link with lead screw matched with nut, and V type support is installed to the slider opposite side, installs the bull's eye bearing. The V-shaped support comprises a horizontal plate and a vertical plate, the horizontal plate is horizontally arranged, the vertical plate is vertically arranged, two inclined plates are connected between the vertical plate and the sliding block, an included angle between each inclined plate and the horizontal plate is 45 degrees, an included angle between the two inclined plates is 90 degrees, and a bull's eye bearing is installed on each inclined plate.

The invention has the positive effects that: according to the pneumatic pin remover, the spring drives the impact piston to collide with the impact shaft to extract the pin shaft, the impact shaft and the pin shaft are driven to vibrate due to the impact while the pin shaft is pulled out by applying an axial force, and the pin shaft can be separated from a connecting position more conveniently under the condition that the pin shaft which is installed in an interference fit manner and the pin shaft are rusted after being installed, so that the pin removing efficiency is improved, and the pin removing quality is ensured.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is an enlarged view of view A of FIG. 2;

FIG. 5 is a sectional view taken along line B-B of FIG. 2;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 3;

FIG. 7 is an enlarged partial view of I of FIG. 6;

FIG. 8 is an enlarged partial view of II of FIG. 6;

FIG. 9 is a schematic structural view of a pneumatic pin remover carriage;

fig. 10 is a schematic structural view of the lifting device.

Detailed Description

The pneumatic pin remover disclosed by the invention comprises a cylinder sleeve 1, wherein a front cylinder cover 2 and a rear cylinder cover 3 are respectively arranged at two ends of the cylinder sleeve 1, as shown in fig. 1, 2 and 3, a percussion piston 4 capable of moving along the cylinder sleeve 1 is also arranged in the cylinder sleeve 1 in a matching manner, and the percussion piston 4 divides the interior of the cylinder sleeve 1 into an air inlet cavity 5 and a spring compression cavity 6, wherein the air inlet cavity 5 is positioned at one end of the rear cylinder cover 3, and the spring compression cavity 6 is positioned at one end of the front cylinder cover 2.

Still install striking axle 7 between cylinder protecgulum 2 and the cylinder rear cover 3, striking axle 7 passes striking piston 4 and arranges along the length direction of cylinder jacket 1, and striking axle 7 moves can drive the round pin axle and extract it. As shown in fig. 5 and 6, an exhaust cavity 8 is arranged inside the impact shaft 7 at one end of the cylinder rear cover 3, an exhaust hole 9 is formed in the impact shaft 7 at the periphery of the exhaust cavity 8, the exhaust hole 9 is communicated with the air inlet cavity 5, a solenoid valve 11 is installed on the cylinder rear cover 3 through a wire pair 10 corresponding to the position of the exhaust cavity 8, an air inlet of the solenoid valve 11 is communicated with the exhaust cavity 8, and a muffler 12 is installed on an exhaust port of the solenoid valve 11. Wherein the break-make of exhaust chamber 8 and external environment can be adjusted in opening and close of solenoid valve 11, and when solenoid valve 11 closed, the gas in the chamber of admitting air 5 can not discharge via exhaust chamber 8, but promotes percussion piston 4 and removes in cylinder jacket 1, and after solenoid valve 11 opened, the gas in the chamber of admitting air 5 then can enter into final exhaust apparatus outside in muffler 12 via exhaust hole 9, exhaust chamber 8, can also play the effect of making an uproar of falling at carminative in-process muffler 12.

As shown in fig. 7, a limit convex edge 13 is further arranged on the impact shaft 7 in the air inlet cavity 5, an impact connection block 14 is installed on the limit convex edge 13 in a matched manner, an impact plate 15 is further fixedly installed on the impact piston 4 corresponding to the position of the impact connection block 14, a spring 16 sleeved on the periphery of the impact shaft 7 is arranged in the spring compression cavity 6, the spring 16 is located between the cylinder front cover 2 and the impact piston 4, after the gas enters the air inlet cavity 5, the impact piston 4 is pushed to move so as to compress the spring 16, after the electromagnetic valve 11 opens the gas to be discharged, the spring 16 after compression can push the impact piston 4 to be close to the impact connection block 14, and after the collision occurs, the impact shaft 7 can be pushed to move through the limit convex edge 13.

The one end that striking axle 7 stretched out cylinder protecgulum 2 is installed transition screw rod 17, transition screw rod 17 is used for connecting the round pin axle and the striking axle 7 of treating the dismantlement, as shown in fig. 4, still set up the air vent 21 with 6 looks UNICOMs in spring compression chamber on the cylinder protecgulum 2, the setting up of air vent 21 guarantees that gas can freely pass in and out spring compression chamber 6, and then maintains the normal removal of striking piston 4 in cylinder jacket 1 the front end of cylinder protecgulum 2 still can install and fall the sound sponge of making an uproar, under the prerequisite of guaranteeing the normal circulation of air in air vent 21, can also filter the gas of passing in and out, prevents that impurity from entering into spring compression chamber 6 in to guarantee spring 16's normal compression, can also play the effect of the sound of making an uproar of falling simultaneously. As shown in fig. 5, the rear cover 3 of the cylinder is provided with an air inlet 22 communicated with the air inlet cavity 5, so that the air inlet cavity 5 is supplied with air by an external air pressure system, and a sealing joint can be installed in the air inlet 22 and is connected with an air supply pipe of the air pressure system by the joint, thereby realizing automatic control.

When the pneumatic pin remover is used for pin shaft disassembly, the transition screw 17 is firstly installed on a pin shaft to be disassembled and the impact shaft 7, the position of the pneumatic pin remover is adjusted, then the electromagnetic valve 11 is closed, the air pressure system is started to provide air for the air inlet cavity 5, high-pressure air enters the air inlet cavity 5 through the air inlet hole 22, the continuously introduced air can be stored in the air inlet cavity 5 due to the closed state of the electromagnetic valve 11, the impact piston 4 can be pushed to move leftwards in the direction shown in fig. 6 after the air pressure reaches a set value, the impact piston is compressed by overcoming the pressure of the spring 16, the original air in the spring compression cavity 6 can be discharged through the vent hole 21 in the process that the impact piston 4 is moved by the air pressure, the position of the impact shaft 7 cannot be changed in the process, the pressure of the high-pressure air in the air inlet cavity 5 on the impact piston 4 and the elasticity of the spring 16 are maintained in a relatively balanced state After the spring 16 is compressed to a set position, the gas supply to the air inlet cavity 5 is stopped, the electromagnetic valve 11 is opened, high-pressure gas in the air inlet cavity 5 is exhausted through the exhaust hole 9, the exhaust cavity 8 and the silencer 12, the air pressure in the air inlet cavity 5 is reduced, the spring 16 can push the impact piston 4 to move to the right in the direction shown in fig. 6, the impact piston 4 moving to the right and the impact plate 15 on the impact piston 4 collide with the impact connecting block 14, and then the impact shaft 7 is driven to move towards the direction of the cylinder rear cover 3, even if the transition screw 17 at the front end of the impact shaft 7 is close to the cylinder front cover 2 to move, and the pin pulling operation is completed. Wherein striking plate 15 and striking connecting block 14's setting, direct collision has been avoided among striking piston 4 and the striking axle 7, under the prerequisite of transmission effort, can also effectively protect striking piston 4 and striking axle 7, improve its life, striking plate 15 and striking connecting block 14 then can in time be maintained and changed as the vulnerable part, effectively reduce the use cost of integrated device, striking in-process striking axle 7 can drive the round pin axle of treating the dismantlement and take place the tremor simultaneously, also can make the round pin axle take place not hard up in step at the round pin pulling-out in-process promptly, more be favorable to tearing the round pin operation open.

In order to prevent the impact piston 4 from moving leftwards beyond the range of the compression distance which can be borne by the spring 16 in the process of pushing the impact piston 4 to compress the spring 16 by introducing gas, the normal elasticity of the spring 16 is maintained, and further the compressed spring 16 has enough force to push the impact piston 4 to collide with the impact shaft 7, a limiting cylinder 23 is installed in the spring compression cavity 6, the spring 16 is located in the limiting cylinder 23, the impact piston 4 stops compressing the spring 16 when moving in the cylinder sleeve 1 to be in contact with the limiting cylinder 23, and the service life of the spring 16 is prolonged to a certain extent.

In order to drive the striking shaft 7 to move rightwards at the striking piston 4 and pull out the in-process of round pin, prevent that the striking shaft 7 from moving rightwards and leading to exhaust hole 9 unable and intake chamber 5 UNICOM, influence the normal removal of striking shaft 7 then and pull out the round pin, as shown in figure 8, the striking shaft 7 periphery between transition screw 17 and the cylinder protecgulum 2 still overlaps and is equipped with stop nut 18, installs stop pin 19 in the stop nut 18, and stop pin 19 can fix stop nut 18 on transition screw 17, still is equipped with first rubber pad 20 between stop nut 18 and cylinder protecgulum 2. The limiting nut 18 installed on the impact shaft 7 can prevent the impact shaft 7 from continuously moving to the right after contacting the cylinder front cover 2, as shown in fig. 6, at the moment, the limiting nut 18 and the first rubber pad 20 are in contact with the cylinder front cover 2, the impact shaft 7 cannot continuously move to the right, the exhaust hole 9 can still be communicated with the air inlet cavity 5, the electromagnetic valve 11 can play a role in normal on-off, each step of the pulling pin is normally performed, wherein the first rubber pad 20 can play a role in buffering, hard contact between the limiting nut 18 and the cylinder front cover 2 is avoided, meanwhile, the first rubber pad 20 can be replaced regularly as a quick-wear part, and the cost of the device is also reduced to a certain extent.

Further, in order to prevent the impact connecting block 14 from colliding with the cylinder rear cover 3 due to an excessively large rightward movement distance of the impact connecting block 14 in the process of pushing the impact connecting block 14 by the rightward movement of the impact piston 4, as shown in fig. 7, a second rubber pad 26 is sleeved on the periphery of the impact shaft 7 between the impact connecting block 14 and the cylinder rear cover 3, and due to the existence of the second rubber pad 26, the impact connecting block 14 does not make hard contact with the cylinder rear cover 3.

In order to fix the striking connecting block 14 on the striking shaft 7 in a detachable manner and avoid the striking connecting block 14 from sliding on the striking shaft 7 at will, the periphery of the striking shaft 7 on one side of the limiting convex edge 13 is provided with threads, a matched threaded hole is formed in the striking connecting block 14, and the striking connecting block 14 is installed on the striking shaft 7 through thread matching.

When percussion piston 4 removed in cylinder jacket 1, in order to guarantee the relative seal between percussion piston 4 both sides air inlet chamber 5 and the spring compression chamber 6, maintain atmospheric pressure and spring force's relative balance, the both ends of percussion piston 4 periphery all are equipped with first sealing washer 24, and first sealing washer 24 and 1 inner wall of cylinder jacket are sealed to be cooperated, and the interior week of percussion piston 4 is equipped with second sealing washer 25, and second sealing washer 25 and the sealed cooperation of striking 7 periphery.

In order to reduce the friction force between the impact shaft 7 and each component in the moving process, a first oil-containing copper sleeve 27 is arranged between the cylinder front cover 2 and the impact shaft 7, a second oil-containing copper sleeve 28 is arranged between the impact piston 4 and the impact shaft 7, and a third oil-containing copper sleeve 29 is arranged between the cylinder rear cover 3 and the impact shaft 7.

In order to facilitate the use and protect the electromagnetic valve 11 and the muffler 12 from the influence of the external environment, the cylinder rear cover 3 is provided with the supporting shaft cylinder 30, the electromagnetic valve 11 and the muffler 12 are both positioned in the supporting shaft cylinder 30, one end of the supporting shaft cylinder 30 is fixedly arranged on the cylinder rear cover 3, the other end of the supporting shaft cylinder 30 is provided with an exhaust pipe 31, and the exhaust pipe 31 is communicated with an exhaust port of the electromagnetic valve 11. In order to adapt to the dismounting operation of the pin shafts at different height positions in use, a pneumatic pin dismounting device support is arranged at one end of the exhaust pipe 31, as shown in fig. 9, the pneumatic pin dismounting device support comprises a bottom plate 32, a vertically arranged vertical frame 33 is arranged on the bottom plate 32, a lifting device is arranged on the vertical frame 33, as shown in fig. 10, the lifting device comprises a shell 34, a worm 41 and a worm wheel 42 which are meshed with each other are arranged in the shell 34, wherein one end of the worm 41 extends out of the shell 34 and is provided with a rotary table 43, a handle 44 is arranged on the rotary table 43, a vertically arranged screw rod 45 is coaxially arranged on the worm wheel 42, a vertically arranged slide rail 35 is arranged at one side of the vertical frame 33, a slide block 36 capable of vertically moving along the slide rail 35 is arranged in a matching manner, a connecting frame 37 is arranged at one side of the slide block 36, a nut 38 matched with the, a bull eye bearing 40 is installed on the V-shaped support, and the exhaust pipe 31 is placed on the bull eye bearing 40. When the handle 44 drives the turntable 43 to rotate, the worm 41 rotates synchronously, the worm wheel 42 meshed with the worm rotates, the screw rod 45 mounted on the worm wheel 42 also rotates synchronously, the nut 38 matched with the screw rod 45 can lift vertically, namely, the slider 36 is driven to move vertically on the slide rail 35, and the vertical height position of the V-shaped bracket and the exhaust pipe 31 is adjusted to match with a pin shaft to be detached. When the worm 41 is in a non-rotating state, the worm wheel 42 cannot be driven to rotate by the accidental rotation of the screw rod 45, the screw rod 45 can be driven to rotate only by actively rotating the worm 41, and the vertical position of the nut 38 can be limited to a certain extent.

Wherein the V-shaped bracket comprises a horizontal plate 39 and a vertical plate 46 which are horizontally arranged, two inclined plates 47 are connected between the vertical plate 46 and the slider 36, the included angle between each inclined plate 47 and the horizontal plate 39 is 45 degrees, the included angle between the two inclined plates 47 is 90 degrees, and the bull-eye bearing 40 is arranged on the inclined plates 47, so that the exhaust pipe 31 can be placed conveniently and can also play a certain limiting role, the bull-eye bearing 40 arranged on the V-shaped bracket can effectively reduce the friction between the bull-eye bearing and the exhaust pipe 31 while playing a supporting role, when the integral pneumatic pin remover shakes or displaces, the rigid contact and friction between the V-shaped bracket and the exhaust pipe 31 can be avoided, the service life of the integral equipment can be further prolonged, meanwhile, the exhaust pipe 31 is ensured to be always positioned on the inclined plates 47 and is prevented from being separated from the V-shaped bracket, wherein the driving, the height position can be accurately positioned when the operation is convenient, and the efficiency of the whole pin dismounting operation can be effectively improved.

The technical solution of the present invention is not limited to the scope of the embodiments of the present invention. The technical contents not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides a pneumatic pin ware of tearing open which characterized in that: the air cylinder comprises an air cylinder sleeve (1), wherein a front cylinder cover (2) and a rear cylinder cover (3) are respectively installed at two ends of the air cylinder sleeve (1), a collision piston (4) capable of moving along the air cylinder sleeve is installed inside the air cylinder sleeve (1) in a matched mode, the collision piston (4) divides the inside of the air cylinder sleeve (1) into an air inlet cavity (5) and a spring compression cavity (6), a collision shaft (7) is further installed between the front cylinder cover (2) and the rear cylinder cover (3), the collision shaft (7) penetrates through the collision piston (4) and is arranged along the length direction of the air cylinder sleeve (1), an exhaust cavity (8) is arranged inside the collision shaft (7) located at one end of the rear cylinder cover (3), an exhaust hole (9) is formed in the collision shaft (7) at the periphery of the exhaust cavity (8), the exhaust hole (9) is in phase with the air inlet cavity (5) and corresponds to the position of the exhaust cavity (8), and an electromagnetic valve (11) is, an air inlet of the electromagnetic valve (11) is communicated with the exhaust cavity (8), a silencer (12) is installed on an exhaust port of the electromagnetic valve (11), a limit convex edge (13) is further arranged on an impact shaft (7) located in the air inlet cavity (5), an impact connecting block (14) is installed on the limit convex edge (13) in a matched mode, a collision plate (15) is further fixedly installed on the impact piston (4) corresponding to the position of the impact connecting block (14), a spring (16) sleeved on the periphery of the impact shaft (7) is arranged in the spring compression cavity (6), the spring (16) is located between the cylinder front cover (2) and the impact piston (4), a transition screw rod (17) is installed at one end, extending out of the cylinder front cover (2), of the impact shaft (7), an air vent (21) communicated with the spring compression cavity (6) is further formed in the cylinder front cover (2), and an air inlet hole (22) communicated with the air inlet cavity (5) is formed in the cylinder rear cover (3), spring (16) can promote striking piston (4) and bump axle (7), makes transition screw rod (17) be close to cylinder protecgulum (2) and removes, install spacing section of thick bamboo (23) in spring compression chamber (6), spring (16) are located spacing section of thick bamboo (23), bump axle (7) periphery between transition screw rod (17) and cylinder protecgulum (2) still overlaps and is equipped with stop nut (18), installs stop pin (19) in stop nut (18), and stop pin (19) can be fixed stop nut (18) on transition screw rod (17), still is equipped with first rubber pad (20) between stop nut (18) and cylinder protecgulum (2).

2. A pneumatic pin remover as claimed in claim 1, wherein: and a second rubber pad (26) is sleeved on the periphery of the impact shaft (7) between the impact connecting block (14) and the cylinder rear cover (3).

3. A pneumatic pin remover as claimed in claim 1, wherein: the periphery of the impact shaft (7) on one side of the limiting convex edge (13) is provided with threads, a matched threaded hole is formed in the impact connecting block (14), and the impact connecting block (14) is installed on the impact shaft (7) through thread matching.

4. A pneumatic pin remover as claimed in claim 1, wherein: both ends of percussion piston (4) periphery all are equipped with first sealing washer (24), and first sealing washer (24) and cylinder jacket (1) inner wall seal fit, and percussion piston (4) interior week is equipped with second sealing washer (25), and second sealing washer (25) and impact shaft (7) periphery seal fit.

5. A pneumatic pin remover as claimed in claim 1, wherein: install first oiliness copper sheathing (27) between cylinder protecgulum (2) and striking axle (7), install second oiliness copper sheathing (28) between striking piston (4) and striking axle (7), install third oiliness copper sheathing (29) between cylinder back cover (3) and striking axle (7).

6. A pneumatic pin remover as claimed in claim 1, wherein: the air cylinder rear cover is characterized in that a supporting shaft cylinder (30) is mounted on the air cylinder rear cover (3), the electromagnetic valve (11) and the silencer (12) are both located in the supporting shaft cylinder (30), one end of the supporting shaft cylinder (30) is fixedly mounted on the air cylinder rear cover (3), the other end of the supporting shaft cylinder (30) is provided with an exhaust pipe (31), and the exhaust pipe (31) is communicated with an exhaust port of the electromagnetic valve (11).

7. A pneumatic pin remover as claimed in claim 6, wherein: be equipped with pneumatic round pin ware support of tearing open in blast pipe (31) one end position department, move and tear round pin ware support open and include bottom plate (32), install grudging post (33) of vertical setting on bottom plate (32), install elevating gear on grudging post (33), elevating gear includes casing (34), installs intermeshing's worm (41) and worm wheel (42) in casing (34), and wherein worm (41) one end is stretched out casing (34) and is installed carousel (43), install handle (44) on carousel (43), coaxial arrangement has vertical lead screw (45) of setting on worm wheel (42), installs vertical slide rail (35) of setting in grudging post (33) one side, and the cooperation is installed on slide rail (35) and to be followed its vertical removal slider (36), slider (36) one side installation link (37), be equipped with nut (38) with lead screw (45) matched with on link (37), a V-shaped bracket is arranged on the other side of the sliding block (36), a bull-eye bearing (40) is arranged on the V-shaped bracket, and an exhaust pipe (31) is arranged on the bull-eye bearing (40).

8. A pneumatic pin remover as claimed in claim 7, wherein: the V-shaped support comprises a horizontal plate (39) and a vertical plate (46), the horizontal plate (39) and the vertical plate (46) are horizontally arranged, two inclined plates (47) are connected between the vertical plate (46) and the sliding block (36), an included angle between each inclined plate (47) and the horizontal plate (39) is 45 degrees, an included angle between the two inclined plates (47) is 90 degrees, and the bull eye bearing (40) is installed on the inclined plates (47).