CN110918948B

CN110918948B - Be applied to fashioned sand mo (u) ld machine of cast member

Info

Publication number: CN110918948B
Application number: CN201911328402.3A
Authority: CN
Inventors: 胡能静; 费先江; 张冠
Original assignee: Shandong Xinli Energy Machinery Manufacturing Co ltd
Current assignee: Shandong Xinli energy Machinery Manufacturing Co.,Ltd.
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-12-04
Anticipated expiration: 2039-12-20
Also published as: CN110918948A

Abstract

The invention provides a sand mould machine applied to casting part forming, which comprises a pneumatic vibration mechanism, a supporting mechanism, a cleaning mechanism and a gas supply device, wherein the supporting mechanism is used for supporting and lifting a sand mould, the vibration mechanism is used for driving the supporting mechanism to vibrate up and down in a reciprocating manner and breaking the sand mould, the cleaning mechanism is used for cleaning sand adhered to the surface of a casting part, the gas supply device is used for supplying high-pressure gas to the vibration mechanism, the supporting mechanism and the cleaning mechanism and driving the vibration mechanism, the supporting mechanism and the cleaning mechanism to normally operate, and the sand mould machine has the advantages of ingenious structure, capability of driving a pneumatic vibrator to vibrate through the high-pressure gas to break the sand mould, convenience for adjusting vibration amplitude and frequency by adjusting the flow rate of the high-pressure gas to control the amplitude and frequency of a pneumatic vibration pump, and capability of directly discharging the high-pressure gas to the surface of the casting part, the sand adhered to the surface of the pouring part is impacted and made to fall off, and the casting efficiency of the pouring part is greatly improved.

Description

Be applied to fashioned sand mo (u) ld machine of cast member

Technical Field

The invention relates to the technical field of sand mold casting, in particular to a sand mold machine applied to molding of a casting part.

Background

Sand casting is a widely used form of casting, as the name implies, that is, the manufacture of casting molds from sand, which requires the placement of a finished part pattern or wooden pattern in the sand, followed by the filling of the sand around the pattern, the unpacking of the pattern and the subsequent removal of the sand to form the mold. In use, the mould is kept for a suitable time after pouring the metal liquid until the metal solidifies, after which the sand is removed and the mould is destroyed after the part is removed, so that a new mould must be made for each casting.

At present, a sand mold is generally vibrated by mechanical vibration to separate sand from a casting part, so that the casting part is taken out, and the defects that on one hand, the amplitude of the mechanical vibration cannot be adjusted, and if the amplitude is too small, the sand mold cannot be quickly broken; if the amplitude is too big, easily lead to the spring collision of pouring part, take place to damage, on the other hand, the sticky grit in pouring part surface is difficult to clear away completely through mechanical vibration, needs to carry out the secondary by the manual work and cleans up, wastes time and energy, in order to overcome foretell drawback, it is ingenious, the principle is simple, be convenient for adjust the vibration amplitude and can break the machine of high-speed two-way air vibration sand mould that clears away completely to the sticky grit in pouring part surface to need to provide a structure.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide the high-speed bidirectional air vibration sand mold breaking and removing machine which is ingenious in structure, simple in principle, convenient for adjusting vibration amplitude and capable of completely removing sand adhered to the surface of a cast part.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

Be applied to fashioned sand mould machine of casting member, it includes pneumatic vibration mechanism, bearing mechanism, clearance mechanism and air feeder, bearing mechanism is used for supporting the sand mould and lifts, vibration mechanism is used for driving bearing mechanism and carries out up-and-down reciprocating vibration and make the sand mould break away, clearance mechanism is used for carrying out cleaning to the sticky grit of pouring part surface, air feeder is used for vibrating mechanism, bearing mechanism and clearance mechanism air feed high-pressure gas and drive vibration mechanism, bearing mechanism and clearance mechanism normal operating.

As a further optimization or improvement of the present solution.

The vibration mechanism comprises a circular bottom plate, a support frame is fixedly arranged at an eccentric position of the upper end face of the bottom plate, four support frames are arranged in an array mode along the circumferential direction of the bottom plate, a first fixing ring and a first fixing ring are fixedly arranged on the support frame and are coaxial with the bottom plate, the first fixing ring is positioned right above the bottom plate, a group of support frames which are oppositely arranged are fixedly provided with support rods which are vertically and upwards arranged at the top ends of the support frames, the axial direction of each support rod is parallel to the axial direction of the bottom plate, the two support rods are arranged in parallel, a second fixing ring is fixedly arranged at the top ends of the support rods and is coaxial with the first fixing ring, a fixing cylinder with two ends open and;

the first fixing ring comprises an outer ring body I and an inner ring body I which are coaxially arranged and coplanar, a first connecting rod for connecting the first outer ring body I and the first connecting rod is arranged between the inner circular surface of the first outer ring body I and the outer circular surface of the first outer ring body I, the first connecting rod is arranged along the circumferential direction of the first outer ring body I in an array mode, a hollow part is formed between every two adjacent first connecting rods, the lower end of the fixing cylinder is fixedly connected with the first outer ring body I in a sealing mode, the upper end of the fixing cylinder is fixedly connected with the second fixing ring in a sealing mode, a sliding rod which extends downwards and is parallel to the axial direction of the first outer ring body is fixedly arranged on the lower end face of the first outer ring body I, the sliding rod is provided with a plurality of sliding rods which are arranged along the circumferential direction of the first outer ring body I in an array mode, a limiting bolt which is in threaded connection and matched with, the vibration ring comprises an outer ring body III, an inner ring body III, a connecting rod III and a guide pipe I, wherein the connecting rod III is connected with the outer ring body III and the inner ring body III, the axial direction of the connecting rod III is parallel to the radial direction of the outer ring body III, the connecting rod III is provided with a plurality of lugs and is arranged in an array mode in the circumferential direction of the outer ring body III, the outer ring body III is sleeved on the sliding rod, lugs are fixedly arranged on the outer circular surface of the outer ring body III, the lugs are provided with four lugs and are arranged in an array mode in the circumferential direction of the outer ring body III, pneumatic vibrators are fixedly arranged on the upper end surfaces of the lugs, and the input ends of.

As a further optimization or improvement of the present solution.

The sliding rod is movably sleeved with a first buffer spring and a second buffer spring, the first buffer spring is located above the second buffer spring, one end of the first buffer spring is abutted against the first outer ring body, the other end of the first buffer spring is abutted against the third outer ring body, the elastic force of the first buffer spring is always directed to the third outer ring body from the first outer ring body, one end of the second buffer spring is abutted against the limiting bolt, the other end of the second buffer spring is abutted against the third outer ring body, and the elastic force of the second buffer spring is always directed to the third outer ring body from.

As a further optimization or improvement of the present solution.

The three up end of inner ring body are coaxial to be seted up annular to the interface, the activity of bearing mechanism is pegged graft in the interface, bearing mechanism includes that the opening arranges downwards and the bearing section of thick bamboo of arranging with the bottom plate is coaxial, the wall thickness of a bearing section of thick bamboo and interface looks adaptation and activity are pegged graft in the interface, the up end of a bearing section of thick bamboo is seted up and is considered the hole rather than the inside switch-on and be provided with a plurality ofly, the coaxial fixed steel wire section of thick bamboo and the bearing section of thick bamboo isodiametric grade that upper and lower both ends opening arranged about being provided with of up end of a bearing section of thick bamboo, the diameter of a steel wire section of thick bamboo is less than the diameter of a fixed cylinder and the steel wire section of thick bamboo is located the inside.

As a further optimization or improvement of the present solution.

The bottom plate is coaxially sleeved with a cylindrical outer cover, the lower end opening of the outer cover is in sealing connection with the outer circular surface of the bottom plate, the upper end opening of the outer cover is matched with the two fixing rings and is in sealing connection with the outer circular surface of the bottom plate, an opening formed by the two fixing rings is provided with a circular plate-shaped sealing cover which is matched with the two fixing rings in an opening-closing connection mode, the inner circular surface of the two fixing rings is provided with a notch which penetrates up and down, the notches are arranged symmetrically along the axial direction of the two fixing rings, the lower end surface of the sealing cover is coaxially and fixedly provided with a circular bulge, the diameter of the bulge is smaller than that of the sealing cover and equal to that of the inner circular surface of the two fixing rings, the outer circular surface of the bulge is fixedly provided with two limiting blocks, the size of each limiting, the fixed handle that is provided with of up end of sealed lid, during the cooperation, pass the stopper by the breach downwards to the below of solid fixed ring two and rotate the handle and make the stopper joint in the lower terminal surface of solid fixed ring two.

As a further optimization or improvement of the present solution.

The bearing device comprises a bearing cylinder, a socket cylinder fixedly connected with the bottom of the bearing cylinder is coaxially arranged in the bearing cylinder, the socket cylinder is located inside the bearing cylinder, a lifting component used for driving the bearing cylinder to lift is arranged between the socket cylinder and a bottom plate, the lifting component comprises a cylinder body I coaxially and fixedly connected with the upper end face of the bottom plate, a piston rod I which forms a sealed sliding guide fit with the cylinder body I is arranged in the cylinder body I, a push rod in the piston rod I extends out of the upper end of the cylinder body I to be inserted in the socket cylinder and fixedly connected with the socket cylinder, a piston in the piston I divides the cylinder body into a gas cavity I with a variable volume and a gas cavity II, the gas cavity I is located below the gas cavity II, a guide pipe II and a guide pipe III are arranged outside the cylinder body I, the output end of the guide pipe II is connected with the gas cavity I and the input end of the guide.

As a further optimization or improvement of the present solution.

Be provided with the sand discharge component between solid fixed cylinder and the bottom plate, the sand discharge component includes that the opening upwards arranges funnel and solid fixed cylinder are coaxial to be arranged, the opening size of funnel is followed vertical direction by supreme crescent down, the big opening diameter of funnel equals with the diameter of solid fixed cylinder, coaxial fixed sleeve pipe and the cover pipe cup joint in the outside of cylinder body one in the funnel, the sleeve pipe has formed annular feed opening and this feed opening intercommunication with the lower extreme opening part of funnel and is provided with the bin outlet, the bin outlet is arranged and its output activity passes the dustcoat by the directional output downward sloping of its input and extends to the outside.

As a further optimization or improvement of the present solution.

The cleaning mechanism comprises impact members and driving members, the impact members are used for guiding high-pressure airflow out towards the surface of a poured part, the impact members are provided with six groups and are arranged in an array mode along the circumferential direction of a fixed cylinder, the impact members comprise hard movable pipes which are rotatably arranged on the fixed cylinder, the axial direction of each movable pipe is arranged along the radial direction of the fixed cylinder, the upper portion and the lower portion of each movable pipe are arranged in parallel, the input ends of the movable pipes are positioned outside the fixed cylinder, end covers which are in sealing connection and matching with the movable pipes are arranged at the input ends of the movable pipes, the output ends of the movable pipes are positioned inside the fixed cylinder, a spray head is communicated with the fixed cylinder and positioned between the steel wire cylinder and the fixed cylinder, the spray heads extend outwards along the radial direction, the output end points to the steel wire cylinder, and the driving component is used for driving the movable pipe to rotate around the self axial direction;

the outer circular surface of the output end of the movable pipe is provided with a first step and a second step, the first step and the second step are both positioned outside the fixed cylinder, the first step is arranged close to the fixed cylinder, the second step is arranged far away from the fixed cylinder, the diameter of the outer circular surface of the first step is smaller than that of the movable pipe and larger than that of the outer circular surface of the second step, the end cover is arranged in a cap shape and forms sealed threaded connection and matching with the second step, the outer circular surface of the first step is provided with a plurality of through holes communicated with the inner part of the movable pipe, the through holes are arranged in an array manner along the circumferential direction of the first step, the first step is coaxially sleeved with an annular butt joint, the butt joint and the first step form rotary sealed connection and matching, the inner circular channel and the through holes are coaxially arranged on the inner circular surface of the butt joint and fixedly provided with a butt joint communicated with the circular channel, the impact component further comprises a fourth guide pipe and the fourth guide pipe is a, the fourth conduit comprises an input end and two output ends, the input end of the fourth conduit is connected and communicated with the gas supply device, one output end of the fourth conduit is connected and communicated with one pair of joints, and the other output end of the fourth conduit is connected and communicated with the other pair of joints.

As a further optimization or improvement of the present solution.

The driving component comprises six guide blocks which are fixedly arranged on the outer circular surface of the fixed cylinder and are parallel to the axial direction of the fixed cylinder, the guide blocks are arranged in an array mode along the circumferential direction where the fixed cylinder is located, the guide blocks are provided with movable racks, the movable racks and the guide blocks form sliding guide fit along the axial direction parallel to the fixed cylinder, driven gears are coaxially and fixedly sleeved on the outer portion of the movable pipe, and the movable racks and the driven gears are in one-to-one correspondence and are meshed;

the driving component also comprises a lifting ring coaxially and movably sleeved outside the fixed cylinder, the inner circular surface of the lifting ring is fixedly connected with the movable rack, the outer circular surface of the lifting ring is provided with two fixed plates which are symmetrically arranged along the axial direction of the lifting ring, the fixed plates are sleeved on the supporting rods and can slide up and down along the supporting rods, an axially vertical cylinder body II is arranged between the fixed plates and the supporting frame, a piston rod II which forms a sealed sliding guide fit with the cylinder body II is arranged in the cylinder body II, a push rod in the piston rod II extends out from the upper end of the cylinder body II and is fixedly connected with the fixed plates, the cylinder body II is divided into a gas cavity III with a variable volume and a gas cavity IV by a piston in the piston rod II, the gas cavity III is positioned below the gas cavity IV, a conduit V and a conduit VI are arranged outside the cylinder body II, the, the output end of the conduit six is connected with the cylinder four, and the output end of the conduit six is connected with the air supply device.

As a further optimization or improvement of the present solution.

The air supply device is arranged on the upper end face of the bottom plate, the air supply device comprises a first branching unit fixedly connected with the upper end face of the bottom plate, the first branching unit comprises an air inlet end and three air outlet ends, the air inlet end of the first branching unit is communicated with an air inlet pipe, the air inlet pipe is connected and communicated with a high-pressure air source, the air outlet ends are respectively communicated with a first branching pipe, a second branching pipe and a third branching pipe, the output end of the first branching pipe is communicated and provided with a first electromagnetic directional valve, the first electromagnetic directional valve comprises two independent output ends and is respectively connected and communicated with the input ends of the second conduit and the third conduit, the output end of the third branching pipe is communicated and provided with a third electromagnetic directional valve, the third electromagnetic directional valve comprises two independent output ends;

the output end of the shunt tube II is communicated with the control valve, the flow speed of the high-pressure gas can be controlled by the control valve, the gas supply device further comprises two shunt tubes II, each shunt tube II comprises an input end and five output ends, a butt joint tube used for connecting and connecting the two output ends is arranged between the output ends of the input end control valve of the shunt tube II, the input ends of the two guide tubes I are respectively connected and connected with the two output ends of the shunt tube II, and the input ends of the three guide tubes IV are respectively connected and connected with the three output ends of the shunt tube.

Compared with the prior art, the pneumatic vibration breaking device has the advantages that the structure is ingenious, the principle is simple, the pneumatic vibrator is driven by high-pressure gas to generate vibration to break a sand mould casting mould, the amplitude and the frequency of the pneumatic vibration pump are controlled by adjusting the flow rate of the high-pressure gas, the vibration amplitude is convenient to adjust, meanwhile, the high-pressure gas can be directly discharged outside the surface of a pouring part, sand adhered to the surface of the pouring part is impacted and made to fall off, and the casting efficiency of the pouring part is greatly improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic structural view of the vibration mechanism.

Fig. 4 is a partial structural schematic view of the vibration mechanism.

Fig. 5 is a partial structural view of the vibration mechanism.

Fig. 6 is a partial structural view of the vibration mechanism.

Fig. 7 is a view showing the combination of the vibration mechanism and the supporting mechanism.

Fig. 8 is a partial structural view of the vibration mechanism.

Fig. 9 is a partial structural view of the vibration mechanism.

Fig. 10 is a partial structural view of the vibration mechanism.

Fig. 11 is a view showing a combination of the supporting mechanism and the vibrating mechanism.

Fig. 12 is a schematic view of the holding mechanism.

FIG. 13 is a schematic structural view of the elevating member and the sand discharging member.

Fig. 14 is a schematic structural view of the elevation member.

Fig. 15 is a schematic structural view of a sand discharge member.

Fig. 16 is a sectional view of a sand discharge member.

Fig. 17 is a view showing the cleaning mechanism in cooperation with the vibrating mechanism and the supporting mechanism.

Figure 18 is a view of the impact member in cooperation with the racking mechanism.

Fig. 19 is a partial structural view of the striking member.

Fig. 20 is an exploded schematic view of the impact member.

Fig. 21 is a cross-sectional view of the impact member.

FIG. 22 is a mating view of the drive member and the impact member.

Fig. 23 is a schematic structural view of the driving member.

Fig. 24 is a partial cross-sectional view of the drive member.

Fig. 25 is a view showing the cooperation of the gas supply device with the elevation member, the pneumatic vibrator, the impact member, and the driving member.

Fig. 26 is a schematic structural view of the gas supply device.

Fig. 27 is a view showing the cooperation of the gas supply device and the elevation member.

Fig. 28 is a view showing the cooperation of the air supply device with the pneumatic vibrator and the impact member.

Fig. 29 is a schematic structural diagram of a second splitter.

Fig. 30 is a view showing the cooperation of the gas supply device and the driving means.

Labeled as:

100. a vibration mechanism; 101. a base plate; 102. a support frame; 103. a first fixing ring; 103a, an outer ring body I; 103b, an inner ring I; 103c, a first connecting rod; 104. a support bar; 105. a second fixing ring; 106. a fixed cylinder; 107. a sealing cover; 108a, a notch; 108b, a bump; 108c, a limiting block; 108d, a handle; 109a, a slide bar; 109b, a limit bolt; 110. a vibrating ring; 110a, an outer ring body III; 110b and an inner ring body III; 110c, a connecting rod III; 111. a butt joint port; 112. a lug; 113. a pneumatic vibrator; 114. a first conduit; 115a and a first buffer spring; 115b and a second buffer spring; 120. a housing;

200. a support mechanism; 201. a bearing cylinder; 202. filtering the holes; 203. a steel wire cylinder; 204. sleeving a sleeve; 210. a lifting member; 211. a first cylinder body; 212. a first piston rod; 213. a second conduit; 214. a third conduit; 220. a sand discharge member; 221. a funnel; 222. a sleeve; 223. a discharge pipe;

300. a cleaning mechanism; 310. an impact member; 311. a movable tube; 311a, step one; 311b, step two; 312c, a through hole; 312. a spray head; 313. an end cap; 314. a docking barrel; 314a, a loop; 314b, butt joint; 315. a fourth conduit; 316. a driven gear; 320. a drive member; 321. a guide block; 322. a movable rack; 323. a lifting ring; 324. a fixing plate; 325. a second cylinder body; 326. a piston rod II; 327. a fifth conduit; 328. a sixth conduit;

400. a gas supply device; 410. a first shunt; 411. an air inlet pipe; 412. a first shunt pipe; 413. a first electromagnetic directional valve; 414. a second shunt pipe; 415. a control valve; 415a and a second splitter; 415b, butt joint pipe; 416. a third shunt pipe; 417. and a third electromagnetic directional valve.

Detailed Description

Referring to fig. 1 to 30, the sand mold machine applied to casting molding comprises a pneumatic vibration mechanism 100, a supporting mechanism 200, a cleaning mechanism 300 and an air supply device 400, wherein the supporting mechanism 200 is used for supporting and lifting a sand mold, the vibration mechanism 100 is used for driving the supporting mechanism 200 to perform up-and-down reciprocating vibration and breaking the sand mold, the cleaning mechanism 300 is used for cleaning sand adhered to the surface of a cast part, and the air supply device 400 is used for supplying high-pressure air to the vibration mechanism 100, the supporting mechanism 200 and the cleaning mechanism 300 and driving the vibration mechanism 100, the supporting mechanism 200 and the cleaning mechanism 300 to normally operate.

Specifically, the vibrating mechanism 100 includes a circular bottom plate 101, a support frame 102 is fixedly arranged at an eccentric position of an upper end face of the bottom plate 101, the support frame 102 is provided with four supporting frames and is arranged in an array along a circumferential direction of the bottom plate 101, a first fixing ring 103 and a first fixing ring 103 which are coaxially arranged with the bottom plate 101 are fixedly arranged on the support frame 102 and are located right above the bottom plate 101, a vertical support rod 104 which is arranged upwards is fixedly arranged at the top end of a group of the supporting frames 102 which are arranged oppositely, the axial direction of the support rod 104 is parallel to the axial direction of the bottom plate 101, the support rods 104 are arranged in parallel, a second fixing ring 105 which is coaxially arranged with the first fixing ring 103 is fixedly arranged at the top end of the support rod 104, a fixing cylinder 106 with two ends arranged in an open mode is coaxially fixedly.

More specifically, the first fixing ring 103 comprises an outer ring body 103a and an inner ring body 103b which are coaxially arranged and coplanar, a first connecting rod 103c for connecting the inner circular surface of the outer ring body 103a and the outer circular surface of the outer ring body 103b is arranged between the inner circular surface of the outer ring body 103a and the outer circular surface of the outer ring body 103b, the first connecting rod 103c is arranged along the radial direction of the outer ring body 103a, the first connecting rod 103c is provided with a plurality of sliding rods 109a which extend downwards and are parallel to the axial direction of the outer ring body 103a, a hollow part is formed between two adjacent first connecting rods 103c, the lower end of the fixing cylinder 106 is fixedly connected with the first outer ring body 103a in a sealing manner, the upper end of the fixing cylinder is fixedly connected with the second fixing ring 105 in a sealing manner, in order to enable vibration to be formed, the lower end surface of the outer ring body 103a is fixedly provided with a plurality of sliding rods 109a which are arranged along the circumferential direction of the outer ring body 103a, the sliding rod 109a is movably sleeved with a vibration ring 110 capable of sliding up and down, the vibration ring 110 is coaxially arranged with the first outer ring body 103a, the vibration ring 110 comprises a third outer ring body 110a which is coaxially arranged, the inner ring body three 110b and the connecting rod three 110c connecting the outer ring body three 110a and the inner ring body three 110b are arranged, the axial direction of the connecting rod three 110c is parallel to the radial direction of the outer ring body three 110a, the connecting rod three 110c is provided with a plurality of connecting rods which are arranged in an array along the circumferential direction of the outer ring body three 110a, the outer ring body three 110a is sleeved on the sliding rod 109a, the outer circumferential surface of the outer ring body three 110a is fixedly provided with a lug 112, the lug 112 is provided with four connecting rods which are arranged in an array along the circumferential direction of the outer ring body three 110a, the upper end surface of the lug 112 is fixedly provided with a pneumatic vibrator 113, and the input end of the pneumatic vibrator 113 is communicated with a first conduit 114 and.

More specifically, in order to buffer the vertical vibration of the vibration ring 110, a first buffer spring 115a and a second buffer spring 115b are movably sleeved on the sliding rod 109a, the first buffer spring 115a is located above the second buffer spring 115b, one end of the first buffer spring 115a abuts against the first outer ring body 103a, the other end of the first buffer spring 115a abuts against the third outer ring body 110a, the elastic force of the first buffer spring 115a always points from the first outer ring body 103a to the third outer ring body 110a, one end of the second buffer spring 115b abuts against the limit bolt 109b, the other end of the second buffer spring 115b abuts against the third outer ring body 110a, the elastic force of the second buffer spring 115b always points from the limit bolt 109b to the third outer ring body 110a, the vibration ring 110 is driven to vibrate by the pneumatic vibrator 113, and the vibration ring 110 is buffered by the first buffer spring 115a and.

In order to transmit the vertical vibration of the vibration ring 110 to the supporting mechanism 200 conveniently, the upper end face of the inner ring body three 110b is coaxially provided with an annular butt joint port 111, the supporting mechanism 200 is movably inserted into the butt joint port 111, the supporting mechanism 200 comprises a supporting cylinder 201 with a downward opening and coaxially arranged with the bottom plate 101, the wall thickness of the supporting cylinder 201 is matched with the butt joint port 111 and is movably inserted into the butt joint port 111, the upper end face of the supporting cylinder 201 is provided with a plurality of filtering holes 202 communicated with the inside of the supporting cylinder, the upper end face of the supporting cylinder 201 is coaxially and fixedly provided with a steel wire cylinder 203 with an upper end and a lower end which are arranged with openings, the steel wire cylinder 203 and the supporting cylinder 201 have the same diameter, the diameter of the steel wire cylinder 203 is smaller than that of the fixed cylinder 106, the steel wire cylinder 203 is positioned inside the fixed cylinder 106, the steel wire cylinder 203 is arranged in a net-shaped hollow shape, and the lower end, in the using process, the sand mold is placed in the steel wire cylinder 203 from the opening at the upper end of the fixed cylinder 106 and is supported by the bearing cylinder 201, the bearing cylinder 201 is driven to vibrate by the vibrating ring 110, the sand mold is vibrated and broken, sand is scattered, and a pouring part is separated from the sand.

When the user uses the sand mold casting mold which is poured and solidified for a certain period of time, the sand mold casting mold is placed in the steel wire cylinder 203 from the upper end opening of the fixed cylinder 106, then the air supply device 400 transmits high-pressure air to the first guide pipe 114, the first guide pipe 114 supplies air to the pneumatic vibrator 113 and enables the pneumatic vibrator 113 to vibrate, the vibration ring 110 vibrates up and down along the sliding rod 109a in a reciprocating manner, the vibration ring 110 transmits the vibration to the bearing cylinder 201 and enables the bearing cylinder 201 to vibrate, the bearing cylinder 201 vibrates and enables the sand mold casting mold to be damaged and scattered, sand is separated from a poured part and falls through the filter hole 202 or the steel wire cylinder 203, in the process, the air supply device 400 also supplies high-pressure air to the cleaning mechanism 300 and the cleaning mechanism 300 guides the high-pressure air of the department, the guided high-pressure air is opposite to the surface of the poured part and impacts and cleans the sand adhered to the surface of the poured part, until the cast parts are completely cleaned.

As a more optimized scheme of the present invention, in order to prevent sand of the sand mold from being vibrated to the outside of the fixed cylinder 106, a cylindrical outer cover 120 is coaxially sleeved on the bottom plate 101, a lower end opening of the outer cover 120 is hermetically connected with an outer circumferential surface of the bottom plate 101, an upper end opening of the outer cover 120 is matched with the second fixed ring 105 and is hermetically connected with the outer circumferential surface thereof, in order to be able to close an opening formed by the second fixed ring 105, a circular plate-shaped sealing cover 107 which is matched with the second fixed ring 105 in an open-close type connection is arranged at the opening formed by the second fixed ring 105, in order to facilitate the matching of the sealing cover 107 and the second fixed ring 105, a notch 108a which penetrates up and down is formed on an inner circumferential surface of the second fixed ring 105, two notches 108a are arranged symmetrically along the axial direction of the second fixed ring 105, a circular protrusion 108b is coaxially and fixedly arranged on a lower end, the outer circular surface of the protrusion 108b is fixedly provided with two limit blocks 108c, the size of the limit blocks 108c is matched with the gap 108a, the two limit blocks 108c are symmetrically arranged along the axial direction of the sealing cover 107, the distance between the limit blocks 108c and the sealing cover 107 is equal to the thickness of the second fixing ring 105, the upper end surface of the sealing cover 107 is fixedly provided with a handle 108d, when in matching, the limiting block 108c penetrates downwards from the notch 108a to the lower part of the second fixing ring 105, and the handle 108d is rotated to enable the limiting block 108c to be clamped on the lower end face of the second fixing ring 105, if it is desired to open the sealing cap 107, the user holds the book 108d to rotate the sealing cap 107 and align the stopper 108c with the notch 108a, then, the sealing cap 107 is lifted to be separated from the second fixing ring 105, the opening formed in the second fixing ring 105 is unsealed, and the user can take out the cast part in the wire barrel 203 or place the sand mold in the wire barrel 203.

In order to facilitate a user to place the sand mold waiting to be broken in the steel wire cylinder 203 or take out the cleaned cast part in the steel wire cylinder 203, a sleeve 204 fixedly connected with the bottom of the sleeve 201 is coaxially arranged in the bearing cylinder 201, the sleeve 204 is positioned in the bearing cylinder 201, a lifting member 210 for driving the bearing cylinder 201 to lift is arranged between the sleeve 204 and the bottom plate 101, the lifting member 210 comprises a cylinder body I211 coaxially and fixedly connected with the upper end surface of the bottom plate 101, a piston rod I212 forming a sealed sliding guide fit with the cylinder body I211 is arranged in the cylinder body I211, a push rod in the piston rod I212 extends out of the upper end of the cylinder body I211 to be inserted in the sleeve 204 and fixedly connected with the cylinder body I, a piston in the piston I212 divides the cylinder body I211 into an air cavity I with a variable volume and an air cavity II, the air cavity I is positioned below the air cavity II, a guide pipe II 213 and a guide pipe III 214 are arranged outside, the output end of the second guide pipe 213 is communicated with the first air cavity and the input end of the second guide pipe 213 is communicated with the air supply device 400, the output end of the third guide pipe 214 is communicated with the second air cavity and the input end of the third guide pipe 214 is communicated with the air supply device 400, in the using process, the second guide pipe 213 enters air and the third guide pipe 214 exhausts air, the first piston rod 212 moves upwards and pushes the bearing cylinder 201 to move upwards synchronously, so that the bearing cylinder 201 moves to the outside of the fixed cylinder 106, and a user can place a sand mold to be broken in the steel wire cylinder 203 or take out a cleaned cast part in the steel wire cylinder 203 conveniently; the third guide tube 214 is used for air intake, the second guide tube 213 is used for air exhaust, and the first piston rod 212 moves downwards and drives the supporting cylinder 210 to move downwards synchronously, so that the supporting cylinder 201 retracts into the fixed cylinder 106 to complete reset.

In order to facilitate a user to collect scattered sand, a sand discharging component 220 is arranged between the fixed cylinder 106 and the bottom plate 101, the sand discharging component 220 comprises a funnel 221 with an upward opening, the funnel 221 and the fixed cylinder 106 are coaxially arranged, the opening of the funnel 221 is gradually increased from bottom to top along the vertical direction, the diameter of the large opening of the funnel 221 is equal to that of the fixed cylinder 106, a sleeve 222 is coaxially and fixedly arranged in the funnel 221, the sleeve 222 is sleeved outside the cylinder body 221, an annular discharge opening is formed at the lower end opening of the sleeve 222 and the funnel 221, the discharge opening is communicated with a discharge pipe 223, the discharge pipe 223 is arranged in a mode that the input end of the discharge pipe 223 points to the output end of the discharge pipe and is inclined downwards, the output end of the discharge pipe 223 movably penetrates through the outer cover 102 and extends to the outside, and the user collects.

In order to remove sand adhered to the surface of the cast part, the cleaning mechanism 300 includes impact members 310 and driving members 320 for guiding high-pressure air flow out toward the surface of the cast part, the impact members 310 are provided with six groups and are arranged in an array along the circumferential direction of the fixed cylinder 106, the impact members 310 include rigid movable tubes 311 rotatably arranged on the fixed cylinder 106, the axial direction of the movable tubes 311 is arranged along the radial direction of the fixed cylinder 106, the movable tubes 311 are arranged in parallel up and down, the input ends of the movable tubes 311 are positioned outside the fixed cylinder 106 and provided with end covers 313 which are in sealing connection and matching with the fixed cylinder 106, the output ends of the movable tubes 311 are positioned inside the fixed cylinder 106 and communicated with spray heads 312, the spray heads 312 are positioned between the steel wire cylinder 203 and the fixed cylinder 106, the spray heads 312 are arranged in an outward extending manner along the radial direction of the movable tubes 311, and the input ends of the spray heads, The output end points to the steel wire cylinder 203, the driving member 320 is used for driving the movable pipe 31 to rotate around the self axial direction, high-pressure gas in the movable pipe 311 is discharged through the spray head 312 and forms high-pressure airflow to impact the surface of a poured part, the movable pipe 311 is driven to rotate, the spray head 312 is enabled to synchronously rotate, the spray head 312 is enabled to cover a wider impact area, and sand adhered to the surface of the poured part is enabled to be comprehensively cleaned.

Specifically, in order to supply air to the movable tube 311 without affecting the rotation of the movable tube 311, a first step 311a and a second step 311b are formed on an outer circumferential surface of an output end of the movable tube 311, the first step 311a and the second step 311b are both located outside the fixed cylinder 106, the first step 311a is disposed close to the fixed cylinder 106, the second step 311b is disposed away from the fixed cylinder 106, a diameter of the outer circumferential surface of the first step 311a is smaller than a diameter of the movable tube 311 and larger than a diameter of the outer circumferential surface of the second step 311b, the end cap 313 is in a cap shape and forms a sealing threaded connection fit with the second step 311b, a through hole 312c communicated with the inside of the movable tube 311 is formed on the outer circumferential surface of the first step 311a, the through holes 312c are provided with a plurality of annular abutting tubes 314 coaxially sleeved on the first step 311a, the abutting tubes 314 and the first step 311a form a rotary sealing connection fit, the inner circular surface of the butt joint cylinder 314 is coaxially provided with a circular channel 314a, a circular channel 314a and a through hole 312c which are connected and communicated, the outer circular surface of the butt joint cylinder 314 is fixedly provided with a butt joint 314b which is connected and communicated with the circular channel 314a, the impact member 310 further comprises a fourth conduit 315, the fourth conduit 315 is a three-way pipe, the fourth conduit 315 comprises an input end and two output ends, the input end of the fourth conduit 315 is connected and communicated with the gas supply device 400, one output end is connected and communicated with one pair of the joints 314b, and the other output end is connected and communicated with the other pair of the joints 314 b.

Specifically, in order to drive the movable tube 311 to rotate, the driving member 320 includes a guide block 321 fixedly disposed on the outer circumferential surface of the fixed cylinder 106 and parallel to the axial direction of the fixed cylinder 106, the guide block 321 is provided with six guide blocks and is arranged in an array along the circumferential direction where the fixed cylinder 106 is located, the guide block 321 is provided with a movable rack 322, the movable rack 322 and the guide block form a sliding guide fit along the axial direction parallel to the fixed cylinder 106, the outer portion of the movable tube 311 is coaxially and fixedly sleeved with a driven gear 316, the movable rack 322 is in one-to-one correspondence with and meshed with the driven gear 316, and the movable rack 322 is driven to reciprocate up and down to realize the rotation of the movable tube 311.

More specifically, the driving member 320 further includes a lifting ring 323 coaxially and movably sleeved outside the fixed cylinder 106, an inner circular surface of the lifting ring 323 is fixedly connected with the movable rack 322, an outer circular surface of the lifting ring 323 is provided with a fixed plate 324, the fixed plate 324 is provided with two and symmetrically arranged along the axial direction of the lifting ring 322, the fixed plate 324 is sleeved on the support rod 104 and can slide up and down along the support rod 104, an axially vertical cylinder block 325 is arranged between the fixed plate 324 and the support frame 102, a piston rod 326 forming a sealed sliding guide fit with the cylinder block 325 is arranged in the cylinder block 325, a push rod in the piston rod 326 extends out from the upper end of the cylinder block 325 and is fixedly connected with the fixed plate 324, a piston in the piston rod 326 divides the cylinder block 325 into a volume-variable air cavity three and an air cavity four, the air cavity three is located below the air cavity four, a conduit five 327 and a, the output end of the five guide pipe 327 is connected and communicated with the air cavity three, the input end of the five guide pipe is connected and communicated with the air supply device 400, the output end of the six guide pipe 328 is connected and communicated with the air cylinder four, the output end of the six guide pipe 327 is connected and communicated with the air supply device 400, the five guide pipe 327 and the six guide pipe 328 supply air alternately, the second piston rod 326 reciprocates up and down, the lifting ring 323 is driven to reciprocate up and down, and the movable pipe 311 is driven to rotate.

In the working process of the cleaning mechanism 300, the gas supply device 400 supplies gas to the conduit four 315, high-pressure gas passes through the loop 314a, the through hole 312c and the movable tube 311 in sequence and is then discharged from the nozzle 312, the nozzle 312 discharges the high-pressure gas and forms high-pressure gas flow, the high-pressure gas flow impacts and cleans sand which is sticky to a cast part, meanwhile, the gas supply device 400 alternately discharges the high-pressure gas to the conduit five 327 and the conduit six 328, the conduit five 327 and the conduit six 328 alternately supply gas, so that the piston rod two 326 reciprocates up and down, the piston rod 326 drives the lifting ring 323 to reciprocate up and down, the lifting ring 323 drives the movable rack 322 to reciprocate up and down, the movable rack 322 drives the driven gear 326 to rotate, the driven gear 326 drives the movable tube 311 to rotate and the nozzle 312 to rotate around the axial direction of the movable tube 311, the nozzle 312 rotates to clean the cast part in all directions, until the sand stuck on the surface of the cast part is removed.

In order to supply air to the input ends of a first conduit 114, a second conduit 213, a third conduit 214, a fourth conduit 315, a fifth conduit 327 and a sixth conduit 328, the air supply device 400 is arranged on the upper end face of the bottom plate 101, the air supply device 400 comprises a first splitter 410 fixedly connected with the upper end face of the bottom plate 101, the first splitter 410 comprises an air inlet end and three air outlet ends, the air inlet end of the first splitter 410 is communicated with an air inlet pipe 411, the air inlet pipe 411 is communicated with a high-pressure air source, the air outlet ends are respectively communicated with a first splitter 412, a second splitter 414 and a third splitter 416, the output end of the first splitter 412 is communicated with a first electromagnetic directional valve 413, the first electromagnetic directional valve 413 comprises two independent output ends and is respectively communicated with the input ends of the second conduit 213 and the third conduit 214, the output end of the third splitter 416 is communicated with a third electromagnetic directional valve 417, the third electromagnetic directional valve 417 comprises two independent output ends and is respectively communicated with the The connection is connected.

The output end of the shunt tube two 414 is communicated with the control valve 415, the control valve 415 can control the flow rate of the high-pressure gas, the gas supply device 400 further comprises two shunt tubes two 415a, the shunt tubes two 415a comprise one input end and five output ends, a butt joint tube 415b for connecting and connecting the two output ends is arranged between the output ends of the input end control valve 415 of the shunt tubes two 415a, the input ends of the two guide tubes one 114 are respectively connected and connected with the two output ends of the shunt tubes two 415a, the input ends of the three guide tubes four 315 are respectively connected and connected with the three output ends of the shunt tubes two 415a, the flow rate of the high-pressure gas entering the shunt tubes two 415a is controlled through the control valve 415, so that the gas supply rate of the guide tubes one 114 to the pneumatic vibration pump 113 is.

In the working process of the air supply device 400, a high-pressure air source is in butt joint with an air inlet pipe 411, a first shunt 410 discharges high-pressure air through a first shunt pipe 412, a second shunt pipe 414 and a third shunt pipe 416, the first air cavity in the first cylinder body 211 is supplied with air through a first electromagnetic directional valve 413, the first piston rod 212 moves upwards, the second air cavity in the first cylinder body 211 is supplied with air, the first piston rod 212 moves downwards, the third air cavity in the second cylinder body 325 is supplied with air through a third electromagnetic directional valve 417, the second piston rod 326 moves upwards, the fourth air cavity in the second cylinder body 325 is supplied with air, the third piston rod 326 moves downwards, the pneumatic vibrator 113 and the spray head 312 are supplied with air through a second shunt 415a, and the vibration of the pneumatic vibrator 113 and the spray head 312 spray high-speed.

Claims

1. Be applied to fashioned sand mould machine of casting, its characterized in that: the device comprises a pneumatic vibration mechanism, a bearing mechanism, a cleaning mechanism and an air supply device, wherein the bearing mechanism is used for supporting and lifting a sand mold, the vibration mechanism is used for driving the bearing mechanism to vibrate up and down in a reciprocating manner and breaking the sand mold, the cleaning mechanism is used for cleaning sand adhered to the surface of a poured part, and the air supply device is used for supplying high-pressure air to the vibration mechanism, the bearing mechanism and the cleaning mechanism and driving the vibration mechanism, the bearing mechanism and the cleaning mechanism to normally operate;

the first fixing ring comprises an outer ring body I and an inner ring body I which are coaxially arranged and coplanar, a first connecting rod for connecting the first outer ring body I and the first connecting rod is arranged between the inner circular surface of the first outer ring body I and the outer circular surface of the first outer ring body I, the first connecting rod is arranged along the circumferential direction of the first outer ring body I in an array mode, a hollow part is formed between every two adjacent first connecting rods, the lower end of the fixing cylinder is fixedly connected with the first outer ring body I in a sealing mode, the upper end of the fixing cylinder is fixedly connected with the second fixing ring in a sealing mode, a sliding rod which extends downwards and is parallel to the axial direction of the first outer ring body is fixedly arranged on the lower end face of the first outer ring body I, the sliding rod is provided with a plurality of sliding rods which are arranged along the circumferential direction of the first outer ring body I in an array mode, a limiting bolt which is in threaded connection and matched, the vibration ring comprises an outer ring body III, an inner ring body III, a connecting rod III and a guide pipe I, wherein the connecting rod III is connected with the outer ring body III and the inner ring body III, the axial direction of the connecting rod III is parallel to the radial direction of the outer ring body III, the connecting rod III is provided with a plurality of lugs and is arranged in an array mode in the circumferential direction of the outer ring body III, the outer ring body III is sleeved on the sliding rod, lugs are fixedly arranged on the outer circular surface of the outer ring body III, the lugs are provided with four lugs and are arranged in an array mode in the circumferential direction of the outer ring body III, pneumatic vibrators are fixedly arranged on the upper end surfaces of the lugs, and the input ends of.

2. The sand molding machine applied to molding of castings according to claim 1, wherein: the sliding rod is movably sleeved with a first buffer spring and a second buffer spring, the first buffer spring is located above the second buffer spring, one end of the first buffer spring is abutted against the first outer ring body, the other end of the first buffer spring is abutted against the third outer ring body, the elastic force of the first buffer spring is always directed to the third outer ring body from the first outer ring body, one end of the second buffer spring is abutted against the limiting bolt, the other end of the second buffer spring is abutted against the third outer ring body, and the elastic force of the second buffer spring is always directed to the third outer ring body from.

3. The sand molding machine applied to molding of castings according to claim 1, wherein: the annular butt joint mouth has been seted up to three up end of inner ring body coaxiality, the activity of bearing mechanism is pegged graft in the butt joint mouth, bearing mechanism includes that the opening arranges downwards and the bearing section of thick bamboo of arranging with the bottom plate is coaxial, the wall thickness of bearing section of thick bamboo and butt joint mouth looks adaptation and activity are pegged graft in the butt joint mouth, the last terminal surface of bearing section of thick bamboo is seted up and is provided with a plurality ofly rather than the filtration pore and the filtration pore of inside switch-on, the steel wire section of thick bamboo and the bearing section of thick bamboo isodiametric size that both ends opening arranged about the coaxial fixed steel wire section of thick bamboo and bearing section of thick bamboo were arranged of bearing section of thick bamboo, the diameter of steel wire section of thick bamboo is less than the diameter.

4. The sand molding machine applied to molding of castings according to claim 1, wherein: the bottom plate is coaxially sleeved with a cylindrical outer cover, the lower end opening of the outer cover is in sealing connection with the outer circular surface of the bottom plate, the upper end opening of the outer cover is matched with the two fixing rings and is in sealing connection with the outer circular surface of the bottom plate, an opening formed by the two fixing rings is provided with a circular plate-shaped sealing cover which is matched with the two fixing rings in an opening-closing connection mode, the inner circular surface of the two fixing rings is provided with a notch which penetrates up and down, the notches are arranged symmetrically along the axial direction of the two fixing rings, the lower end surface of the sealing cover is coaxially and fixedly provided with a circular bulge, the diameter of the bulge is smaller than that of the sealing cover and equal to that of the inner circular surface of the two fixing rings, the outer circular surface of the bulge is fixedly provided with two limiting blocks, the size of each limiting, the fixed handle that is provided with of up end of sealed lid, during the cooperation, pass the stopper by the breach downwards to the below of solid fixed ring two and rotate the handle and make the stopper joint in the lower terminal surface of solid fixed ring two.

5. The sand molding machine applied to molding of castings according to claim 3, wherein: the bearing device comprises a bearing cylinder, a socket cylinder fixedly connected with the bottom of the bearing cylinder is coaxially arranged in the bearing cylinder, the socket cylinder is located inside the bearing cylinder, a lifting component used for driving the bearing cylinder to lift is arranged between the socket cylinder and a bottom plate, the lifting component comprises a cylinder body I coaxially and fixedly connected with the upper end face of the bottom plate, a piston rod I which forms a sealed sliding guide fit with the cylinder body I is arranged in the cylinder body I, a push rod in the piston rod I extends out of the upper end of the cylinder body I to be inserted in the socket cylinder and fixedly connected with the socket cylinder, a piston in the piston I divides the cylinder body into a gas cavity I with a variable volume and a gas cavity II, the gas cavity I is located below the gas cavity II, a guide pipe II and a guide pipe III are arranged outside the cylinder body I, the output end of the guide pipe II is connected with the gas cavity I and the input end of the guide.

6. The sand molding machine applied to molding of castings according to claim 3, wherein: be provided with the sand discharge component between solid fixed cylinder and the bottom plate, the sand discharge component includes that the opening upwards arranges funnel and solid fixed cylinder are coaxial to be arranged, the opening size of funnel is followed vertical direction by supreme crescent down, the big opening diameter of funnel equals with the diameter of solid fixed cylinder, coaxial fixed sleeve pipe and the cover pipe cup joint in the outside of cylinder body one in the funnel, the sleeve pipe has formed annular feed opening and this feed opening intercommunication with the lower extreme opening part of funnel and is provided with the bin outlet, the bin outlet is arranged and its output activity passes the dustcoat by the directional output downward sloping of its input and extends to the outside.

7. The sand molding machine applied to molding of castings according to claim 1, wherein: the cleaning mechanism comprises impact members and driving members, the impact members are used for guiding high-pressure airflow out towards the surface of a poured part, the impact members are provided with six groups and are arranged in an array mode along the circumferential direction of a fixed cylinder, the impact members comprise hard movable pipes which are rotatably arranged on the fixed cylinder, the axial direction of each movable pipe is arranged along the radial direction of the fixed cylinder, the upper portion and the lower portion of each movable pipe are arranged in parallel, the input ends of the movable pipes are positioned outside the fixed cylinder, end covers which are in sealing connection and matching with the movable pipes are arranged at the input ends of the movable pipes, the output ends of the movable pipes are positioned inside the fixed cylinder, a spray head is communicated with the fixed cylinder and positioned between the steel wire cylinder and the fixed cylinder, the spray heads extend outwards along the radial direction, the output end points to the steel wire cylinder, and the driving component is used for driving the movable pipe to rotate around the self axial direction;

the outer circular surface of the output end of the movable pipe is provided with a first step and a second step, the first step and the second step are both positioned outside the fixed cylinder, the first step is arranged close to the fixed cylinder, the second step is arranged far away from the fixed cylinder, the diameter of the outer circular surface of the first step is smaller than that of the movable pipe and larger than that of the outer circular surface of the second step, the end cover is arranged in a cap shape and forms sealed threaded connection and matching with the second step, the outer circular surface of the first step is provided with a plurality of through holes communicated with the inner part of the movable pipe, the through holes are arranged in an array manner along the circumferential direction of the first step, the first step is coaxially sleeved with an annular butt joint cylinder, the butt joint cylinder and the first step form rotary sealed connection and matching, the inner circular surface of the butt joint cylinder is coaxially provided with a circular channel and communicated with the through holes, the outer circular channel is fixedly provided with a butt joint communicated with the circular channel, the impact component further comprises a, the fourth conduit comprises an input end and two output ends, the input end of the fourth conduit is connected and communicated with the gas supply device, one output end of the fourth conduit is connected and communicated with one pair of joints, and the other output end of the fourth conduit is connected and communicated with the other pair of joints.

8. The sand molding machine applied to casting molding according to claim 7, wherein: the driving component comprises six guide blocks which are fixedly arranged on the outer circular surface of the fixed cylinder and are parallel to the axial direction of the fixed cylinder, the guide blocks are arranged in an array mode along the circumferential direction where the fixed cylinder is located, the guide blocks are provided with movable racks, the movable racks and the guide blocks form sliding guide fit along the axial direction parallel to the fixed cylinder, driven gears are coaxially and fixedly sleeved on the outer portion of the movable pipe, and the movable racks and the driven gears are in one-to-one correspondence and are meshed;

9. The sand molding machine applied to molding of castings according to claim 1, wherein: the air supply device is arranged on the upper end face of the bottom plate, the air supply device comprises a first branching unit fixedly connected with the upper end face of the bottom plate, the first branching unit comprises an air inlet end and three air outlet ends, the air inlet end of the first branching unit is communicated with an air inlet pipe, the air inlet pipe is connected and communicated with a high-pressure air source, the air outlet ends are respectively communicated with a first branching pipe, a second branching pipe and a third branching pipe, the output end of the first branching pipe is communicated and provided with a first electromagnetic directional valve, the first electromagnetic directional valve comprises two independent output ends and is respectively connected and communicated with the input ends of the second conduit and the third conduit, the output end of the third branching pipe is communicated and provided with a third electromagnetic directional valve, the third electromagnetic directional valve comprises two independent output ends;