CN112548782A

CN112548782A - A polisher for plastics are made

Info

Publication number: CN112548782A
Application number: CN202011441750.4A
Authority: CN
Inventors: 朱景润
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-03-26

Abstract

The invention discloses a grinding machine for plastic manufacturing, which comprises a frame and a grinding device, wherein a mounting sleeve with a grinding wheel at the bottom is fixed at the bottom of a metal connector at the lower end of a suspender through a permanent magnet in a mounting hole at the top end in an absorption manner, limiting strips are arranged on the outer walls of two sides of the suspender at the upper end of the metal connector by utilizing a bracket, when the metal connector is clamped in the mounting hole, the limiting strips are attached to the top of the mounting sleeve and are inserted into inner cavities of fixed clamping sleeves A at two sides of the upper end of the mounting sleeve, the top end of the suspender is fixedly sleeved on the outer wall of a fixed hanging part shaft lever at the bottom of a cross bar between the inner walls at two sides of a shell, after the mounting sleeve and the grinding wheel are clamped and fixed, a knob at the tail end of the cross bar is rotated to pull out the metal connector at the bottom of the suspender from the mounting hole, and pull out the limiting strips from, is convenient and quick.

Description

A polisher for plastics are made

Technical Field

The invention relates to the technical field of plastic processing, in particular to a grinding machine for plastic manufacturing.

Background

The plastic is a high molecular compound, commonly called plastic or resin, which is polymerized by addition polymerization or polycondensation reaction using monomer as raw material, and can freely change the components and shape and style, and is composed of synthetic resin, filler, plasticizer, stabilizer, lubricant, pigment and other additives. The main component of the plastic is resin. The term resin is originally named from lipids secreted from animals and plants, such as rosin, shellac, etc., and resin refers to a high molecular compound that has not been mixed with various additives. The resin accounts for about 40-100% of the total weight of the plastic. The basic properties of plastics are largely determined by the nature of the resin, but additives also play an important role. Some plastics are composed essentially of synthetic resins, with no or little additives, such as organic glass, polystyrene, etc.,

plastics are the most widely used materials at present, and can be used for manufacturing plastic oil funnels, plastic pipes, models and the like, when the plastic parts are manufactured, particularly plastic plates, unsmooth surfaces or burrs are easily generated, and the edge surfaces of the plastic parts are often required to be polished smoothly. However, the grinding wheel of the prior polisher for plastic parts is fixed by a series of components such as fixing bolts, which is troublesome to operate and inconvenient for the disassembly and assembly of the grinding wheel; moreover, the existing sander can generate a large amount of fine dust when plastic sanding is performed, and the dust can affect the health of operators when scattered in the air.

We have therefore proposed a sander for use in plastics manufacture.

Disclosure of Invention

The invention aims to provide a polisher for plastic manufacturing, wherein a polishing device is arranged at the lower end of a top plate of an L-shaped vertical plate at the upper end of a base in a matching mode through a cylinder, a piston push rod and a guide slide rod, a polishing component is suspended at the upper end of a polishing table through a movable plate, a trepanning and a hanging plate in a matching mode through a motor, a supporting seat is arranged at the upper end of a bottom plate of the polishing table and provided with a placing groove, a leak hole is arranged at the upper end of a pedestal bottom plate between a raised edge and the side wall of the supporting seat, and when the polishing component polishes plastic, a sealing cover of the polisher covers the top of the raised edge and collects polishing dust from the leak hole into a dust collecting filter cylinder through a funnel, so that the problems in the background are.

In order to achieve the purpose, the invention provides the following technical scheme: a polishing machine for plastic manufacturing comprises a machine frame and a polishing device, wherein the polishing device is installed on the machine frame, the machine frame comprises a base, a controller, a polishing table, an L-shaped vertical plate, a cylinder, a piston push rod and a guide slide rod, the controller is arranged on one side of the outer wall of the front surface of the base, the polishing table is integrally arranged at the middle part of the upper end of the base, the L-shaped vertical plate is fixedly connected with the upper end edge of one side of a back plate of the base, the L-shaped vertical plate and the base are of an integral structure, a top plate of the L-shaped vertical plate is suspended at the upper end of the polishing table, the cylinder is installed at the upper end of a top plate of the L-shaped vertical plate, the output end of the bottom of the cylinder is fixedly connected with one end of the piston push rod, the other end of the piston push rod penetrates through the top plate, the guide sliding rods are arranged in bilateral symmetry relative to the piston push rod, and the outer walls of the guide sliding rods are movably sleeved with the polishing devices;

grinding device includes the fly leaf, the trepanning, the hanger plate, motor and the subassembly of polishing, the trepanning has been seted up respectively along the department to both sides edge of fly leaf upper end, the fly leaf cup joints on the outer wall of direction slide bar through the trepanning activity, and the fly leaf passes through fixing bolt fixed connection in piston push rod's bottom, the inboard fly leaf lower extreme fixedly connected with hanger plate of trepanning, and the formula structure as an organic whole between hanger plate and fly leaf, the motor is installed through fixing bolt in the upper end middle part department of hanger plate, the transmission shaft of motor lower extreme runs through the hanger plate and extends to its lower extreme, and terminal fixedly connected with subassembly of polishing, the subassembly of polishing is suspended.

Further, the platform of polishing includes the pedestal, protruding bead, a supporting seat, standing groove and small opening, the pedestal is upper end open-ended hollow structure, and be provided with integrative protruding bead on the inner wall of pedestal, the lateral wall of protruding bead is the infundibulate structure, and the bottom plate upper end middle part department of pedestal is provided with the supporting seat, constitute the integral type structure between supporting seat and the pedestal bottom plate, and the standing groove has been seted up to the upper end of supporting seat, the small opening evenly spaced apart locates the pedestal bottom plate upper end between protruding bead and supporting seat lateral wall, the small opening is the annular and evenly sets up, and the small opening lower extreme communicates the roof of base.

Furthermore, the lower end of the base top plate outside the port at the bottom of the leak hole is fixedly connected with a dust collecting funnel, the dust collecting funnel covers the leak hole in the inner side of the port at the top of the leak hole, the lower end of the dust collecting funnel is fixedly connected with a dust collecting filter cylinder, a through hole is formed in the side wall of the base on one side of the dust collecting filter cylinder, the inner wall on one side of the port of the through hole is fixedly connected with one end of the movable door through a hinge, and a grid is arranged on the side wall.

Further, the subassembly of polishing includes the connecting piece, the jib, the metal connector, the installation cover, the mounting hole, permanent magnet and emery wheel, the connecting piece passes through fixing bolt to be installed in motor drive shaft's bottom, and the lower extreme fixedly connected with jib of connecting piece, the bottom of jib is provided with integrative metal connector, the mounting hole has been seted up to the upper end of installation cover, it has the permanent magnet to inlay in the mounting hole, the lower extreme of jib adsorbs the top of being fixed in permanent magnet in the mounting hole through the metal connector, and the bottom of installation cover is provided with the emery wheel.

Further, be close to the integrative support of bottom punishment difference symmetry fixedly connected with on the jib both sides outer wall of metallic interconnect head upper end, cup jointed spacing respectively on the axostylus axostyle outer wall between the support lateral wall, spacing and the fixed cutting ferrule A phase-match of installing sleeve top both sides, and when the metallic interconnect head block was inside the mounting hole, spacing laminating installing sleeve top set up and plug in the inner chamber of fixed cutting ferrule A.

Furthermore, the outer walls of two sides of the hanging rod at the upper end of the support are symmetrically provided with a shifting plate respectively, the shifting plate is installed in a fan-blade-shaped inclined mode, the outer wall of the hanging rod at the upper end of the shifting plate is movably sleeved with a sealing cover, the sealing cover is matched with the size of the protruding bead, and when the sealing cover falls on the upper end of the protruding bead, the shifting plate is not in contact with the inner wall of the sealing cover.

Further, the connecting piece includes the casing, the bellying, the sleeve, stop screw, horizontal pole and knob, casing fixed connection is in motor drive shaft's bottom, and the punishment of the both sides outer wall middle part of casing do not the symmetry set up integrative bellying, the sleeve sets up respectively in the upper end both sides of casing, the inside stop screw that cup joints respectively of sleeve, stop screw's bottom all extends to inside the casing, and with the horizontal pole swing joint that sets up between the casing both sides inner wall, the one end of horizontal pole runs through the casing lateral wall and extends to its outside, and terminal fixedly connected with knob.

Furthermore, the middle part of the side wall of the cross rod is provided with an integrated fixed hanging piece, the top end of the hanging rod is fixedly sleeved on the outer wall of the shaft rod of the fixed hanging piece, the side walls at the two ends of the cross rod on the two sides of the fixed hanging piece are provided with threaded holes corresponding to the sleeves respectively, the threaded holes are in cross-shaped arrangement, and the cross rod is in threaded connection with a limiting screw rod through the threaded holes.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention provides a grinding machine for plastic manufacturing, wherein a mounting sleeve with a grinding wheel at the bottom is fixed at the bottom of a metal connector at the lower end of a suspender through a permanent magnet in a mounting hole at the top end, the outer walls at two sides of the suspender at the upper end of the metal connector are provided with limit strips by utilizing a bracket, when the metal connector is clamped in the mounting hole, the limit strips are attached to the top of the mounting sleeve and are inserted into inner cavities of fixed cutting sleeves at two sides of the upper end, the top end of the suspender is fixedly sleeved on the outer wall of a fixed hanger shaft lever at the bottom of a cross bar between the inner walls at two sides of a shell, after the mounting sleeve and the grinding wheel are clamped and fixed, a knob at the tail end of the cross bar is rotated to pull out the metal connector at the bottom of the suspender from the mounting hole, and at the same time, the limit strips are slowly pulled out from the inner cavities of the, is convenient and quick.

2. According to the plastic manufacturing polisher, the polishing table is arranged in the middle of the upper end of the base, the supporting seat is arranged at the upper end of the pedestal bottom plate of the polishing table, the placing groove is formed in the supporting seat, the leakage hole is formed in the upper end of the pedestal bottom plate between the protruding bead on the inner wall of the pedestal and the side wall of the supporting seat, when a polishing assembly polishes plastic, the sealing cover on the outer wall of the hanging rod covers the top of the protruding bead to achieve sealing, and polishing powder is collected into the dust collection filter cylinder from the leakage hole through the dust collection funnel arranged at the bottom of the leakage hole, so that the problem that the dust flies to pollute the environment during plastic polishing is avoided, and meanwhile, operators are prevented from sucking the dust into the body to damage the health of the body.

3. The invention provides a grinding machine for plastic manufacturing, wherein poking plates are symmetrically arranged on the outer walls of two sides of a hanging rod at the upper end of a support respectively, the poking plates are installed in a fan-blade-shaped inclined mode, a sealing cover is movably sleeved on the outer wall of the hanging rod at the upper end of the poking plate, the sealing cover is matched with a protruding edge in size, when the sealing cover falls on the upper end of the protruding edge, the poking plates are not in contact with the inner wall of the sealing cover, when a grinding assembly grinds plastic, the poking plates are driven by the hanging rod and a motor to rotate to manufacture downward cyclone, dust generated when a grinding wheel grinds the plastic is accelerated to pass through a leak hole at the bottom of a grinding table by the cyclone, and the dust collecting and processing efficiency and.

Drawings

FIG. 1 is a schematic view of the overall structure of the sander used in plastic manufacturing according to the present invention;

FIG. 2 is a schematic view of a grinding device mounting structure of the grinding machine for plastic manufacturing of the present invention;

FIG. 3 is a cross-sectional view of the base and grinding table of the grinder for plastic manufacturing of the present invention;

FIG. 4 is a schematic view of the grinding device of the grinding machine for plastic manufacturing of the present invention;

FIG. 5 is a schematic illustration of a grinding assembly of the grinder for plastic manufacturing of the present invention;

FIG. 6 is an exploded view of a sanding assembly for a plastic-made sander according to the present invention;

FIG. 7 is a cross-sectional view of a mounting sleeve for a plastic-made sander according to the present invention;

FIG. 8 is an enlarged view at A of FIG. 6 of the sander for plastic manufacturing of the present invention;

figure 9 is a cross-sectional view of the attachment of the sander used in plastic manufacture of the present invention.

In the figure: 1. a frame; 11. a base; 12. a controller; 13. a polishing table; 131. a pedestal; 132. a raised bead; 133. a supporting seat; 134. a placement groove; 135. a leak hole; 14. an L-shaped vertical plate; 15. an air cylinder; 16. a piston push rod; 17. a guide slide bar; 18. a dust collecting funnel; 19. a dust collection cartridge; 110. a through hole; 111. a movable door; 2. a polishing device; 21. a movable plate; 22. trepanning; 23. a hanger plate; 24. a motor; 25. polishing the assembly; 251. a connecting member; 2511. a housing; 2512. a boss portion; 2513. a sleeve; 2514. a limit screw; 2515. a cross bar; 2516. a knob; 2517. fixing the hanging piece; 2518. a threaded hole; 252. a boom; 253. a metal connector; 254. installing a sleeve; 255. mounting holes; 256. a permanent magnet; 257. a grinding wheel; 258. a support; 259. a limiting strip; 259A and a fixed cutting sleeve; 259B, a poking plate; 259C and a sealing cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a polisher for plastic manufacturing includes a frame 1 and a polishing device 2, the polishing device 2 is mounted on the frame 1, the frame 1 includes a base 11, a controller 12, a polishing table 13, an L-shaped vertical plate 14, a cylinder 15, a piston push rod 16 and a guide slide bar 17, the controller 12 is disposed on one side of the outer wall of the front surface of the base 11, the polishing table 13 is integrally disposed at the middle of the upper end of the base 11, the L-shaped vertical plate 14 is fixedly connected to the upper end edge of the base 11 near the back plate, the L-shaped vertical plate 14 and the base 11 are of an integral structure, the top plate of the L-shaped vertical plate 14 is suspended at the upper end of the polishing table 13, the cylinder 15 is mounted on the upper end of the top plate of the L-shaped vertical plate 14, the output end of the bottom of the cylinder 15 is fixedly connected to one end of the piston push rod 16, the, and the bottom edges of the top plates of the L-shaped vertical plates 14 on the two sides of the piston push rod 16 are respectively and fixedly connected with guide slide bars 17, the guide slide bars 17 are arranged in bilateral symmetry relative to the piston push rod 16, and the outer wall of each guide slide bar 17 is movably sleeved with a polishing device 2.

The polishing table 13 comprises a pedestal 131, a raised bead 132, a supporting seat 133, a placing groove 134 and a leak hole 135, wherein the pedestal 131 is of a hollow structure with an opening at the upper end, the inner wall of the pedestal 131 is provided with the raised bead 132 integrally, the side wall of the raised bead 132 is of a funnel-shaped structure, the supporting seat 133 is arranged in the middle of the upper end of the bottom plate of the pedestal 131, an integrated structure is formed between the supporting seat 133 and the bottom plate of the pedestal 131, the upper end of the supporting seat 133 is provided with the placing groove 134, the leak hole 135 is uniformly arranged at the upper end of the bottom plate of the pedestal 131 between the raised bead 132 and the side wall of the supporting seat 133 at intervals, the leak hole 135 is uniformly arranged in an annular shape, and the lower; the lower end of the top plate of the base 11 outside the bottom port of the leak hole 135 is fixedly connected with a dust collecting funnel 18, the dust collecting funnel 18 covers the leak hole 135 at the inner side of the top port of the leak hole, the lower end of the dust collecting funnel 18 is fixedly connected with a dust collecting filter cylinder 19, a through hole 110 is formed in the side wall of the base 11 on one side of the dust collecting filter cylinder 19, the inner wall on one side of the port of the through hole 110 is fixedly connected with one end of a movable door 111 through a hinge, and a grating is arranged on the side wall of.

Referring to fig. 2 and 4, a polishing device 2 for a plastic manufacturing polisher includes a movable plate 21, a sleeve hole 22, a hanging plate 23, a motor 24 and a polishing assembly 25, the sleeve hole 22 is respectively formed at two side edges of an upper end of the movable plate 21, the movable plate 21 is movably sleeved on an outer wall of a guide slide bar 17 through the sleeve hole 22, the movable plate 21 is fixedly connected to a bottom of a piston push rod 16 through a fixing bolt, the hanging plate 23 is fixedly connected to a lower end of the movable plate 21 inside the sleeve hole 22, the hanging plate 23 and the movable plate 21 are of an integrated structure, the motor 24 is mounted at a middle part of an upper end of the hanging plate 23 through a fixing bolt, a transmission shaft at a lower end of the motor 24 penetrates through the hanging plate 23 and extends to a lower end thereof, a polishing assembly 25 is fixedly connected to a tail end of the hanging plate.

Referring to fig. 5-8, a grinding machine for plastic manufacturing, the grinding assembly 25 includes a connecting member 251, a suspension rod 252, a metal connector 253, an installation sleeve 254, an installation hole 255, a permanent magnet 256 and a grinding wheel 257, the connecting member 251 is installed at the bottom of a transmission shaft of the motor 24 through a fixing bolt, the lower end of the connecting member 251 is fixedly connected with the suspension rod 252, the bottom of the suspension rod 252 is provided with an integrated metal connector 253, the upper end of the installation sleeve 254 is provided with the installation hole 255, the permanent magnet 256 is embedded in the installation hole 255, the lower end of the suspension rod 252 is fixed to the top of the permanent magnet 256 in the installation hole 255 through the metal connector 253 in an adsorbing manner, and the bottom of the installation.

The outer walls of two sides of the suspender 252 at the upper end of the metal connector 253 are respectively and symmetrically fixedly connected with an integrated bracket 258 near the bottom, the outer wall of a shaft lever between the side walls of the bracket 258 is respectively sleeved with a limiting strip 259, the limiting strip 259 is matched with the fixing clamping sleeve 259A at two sides of the top of the mounting sleeve 254, and when the metal connector 253 is clamped in the mounting hole 255, the limiting strip 259 is attached to the top of the mounting sleeve 254 and is inserted into the inner cavity of the fixing clamping sleeve 259A; the outer walls of two sides of the suspender 252 at the upper end of the support 258 are symmetrically provided with a shifting plate 259B respectively, the shifting plate 259B is installed in a fan-blade shape in an inclined manner, the outer wall of the suspender 252 at the upper end of the shifting plate 259B is movably sleeved with a sealing cover 259C, the sealing cover 259C is matched with the size of the protruding bead 132, and when the sealing cover 259C falls on the upper end of the protruding bead 132, the shifting plate 259B is not contacted with the inner wall of the sealing cover 259C.

Referring to fig. 6 and 9, a sander for plastic manufacturing, a connecting member 251 includes a housing 2511, a protrusion 2512, a sleeve 2513, a limit screw 2514, a cross bar 2515 and a knob 2516, the housing 2511 is fixedly connected to the bottom of a transmission shaft of a motor 24, the protrusions 2512 are symmetrically arranged at the middle of the outer walls of two sides of the housing 2511, the sleeves 2513 are respectively arranged at two sides of the upper end of the housing 2511, the limit screws 2514 are respectively sleeved inside the sleeves 2513, the bottom ends of the limit screws 2514 extend into the housing 2511 and are movably connected with the cross bar 2515 arranged between the inner walls of two sides of the housing 2511, one end of the cross bar 2515 penetrates through the side wall of the housing 2511 and extends to the outside thereof, the knob 2516 is fixedly connected at the tail end, an integral fixed hanger 2517 is arranged at the middle of the side wall of the cross bar 2515, the top end of the hanger bar 252 is fixedly sleeved on the outer wall of, and threaded holes 2518 are respectively formed in the side walls at the two ends of the cross bar 2515 on the two sides of the fixed hanger 2517, the threaded holes 2518 are arranged in a cross shape, and the cross bar 2515 is in threaded connection with a limit screw 2514 through the threaded holes 2518.

In summary, the following steps: the invention provides a grinding machine for plastic manufacturing, wherein an installation sleeve 254 with a grinding wheel 257 at the bottom is fixed at the bottom of a metal connector 253 at the lower end of a suspender 252 through a permanent magnet 256 in an installation hole 255 at the top end, a limit strip 259 is arranged on the outer walls of two sides of the suspender 252 at the upper end of the metal connector 253 by using a bracket 258, when the metal connector 253 is clamped in the installation hole 255, the limit strip 259 is attached to the top of the installation sleeve 254 and is inserted into an inner cavity of a fixed clamping sleeve 259A at two sides of the upper end of the installation sleeve, the top end of the suspender 252 is fixedly sleeved on the outer wall of a shaft lever 2517 at the bottom of a cross bar 2515 between the inner walls at two sides of a shell 2511, after the installation sleeve 254 and the grinding wheel 257 are clamped and fixed, a knob 2516 at the tail end of the cross bar 2515 is rotated, the metal connector 253 at the bottom of the, the mounting sleeve 254 and the grinding wheel 257 can be detached, otherwise, the limiting strip 259 is driven to be clamped in the fixing clamping sleeve 259A through the suspender 252 to mount the grinding wheel 257 conveniently and quickly; the middle part of the upper end of the base 11 is provided with a grinding table 13, the upper end of the bottom plate of a pedestal 131 of the grinding table 13 is provided with a supporting seat 133 and a placing groove 134, the upper end of the bottom plate of the pedestal 131 between a raised bead 132 on the inner wall of the pedestal 131 and the side wall of the supporting seat 133 is provided with a leakage hole 135, when the grinding assembly 25 grinds plastics, a sealing cover 259C on the outer wall of a suspender 252 is covered on the top of the raised bead 132 to realize sealing, grinding dust is collected into a dust collection filter cylinder 19 from the leakage hole 135 through a dust collection funnel 18 arranged at the bottom of the leakage hole 135, the dust flying to pollute the environment during plastic grinding is avoided, and meanwhile, the problem that operators suck the dust into bodies to harm the health is avoided, and; the board 259B is dialled in the symmetry respectively on the jib 252 both sides outer wall of support 258 upper end, it is the installation of fan blade shape slope to dial board 259B, and the activity cup joints sealed cowling 259C on the jib 252 outer wall of dialling board 259B upper end, sealed cowling 259C matches with the size of protruding bead 132 skin, when sealed cowling 259C falls in protruding bead 132 upper end, dial board 259B and sealed cowling 259C inner wall contactless, when the subassembly 25 of polishing is polished plastics, dial board 259B rotatory manufacturing decurrent cyclone under jib 252 and motor 24's drive, the dust that produces when utilizing the cyclone to polish plastics with emery wheel 257 is with higher speed through the small opening 135 of platform 13 bottom of polishing, strengthen dust collection treatment effeciency and effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sander for plastic manufacturing, comprising a frame (1) and a sanding device (2), the sanding device (2) being mounted on the frame (1), characterized in that: the machine frame (1) comprises a base (11), a controller (12), a polishing platform (13), an L-shaped vertical plate (14), a cylinder (15), a piston push rod (16) and a guide slide rod (17), wherein the controller (12) is arranged on one side of the outer wall of the front face of the base (11), the polishing platform (13) is integrally arranged at the middle part of the upper end of the base (11), the L-shaped vertical plate (14) is fixedly connected to the edge of the upper end of one side, close to a back plate, of the base (11), the L-shaped vertical plate (14) and the base (11) are of an integrated structure, the top plate of the L-shaped vertical plate (14) is suspended at the upper end of the polishing platform (13), the cylinder (15) is installed at the upper end of the top plate of the L-shaped vertical plate (14), the output end of the bottom of the cylinder (15) is fixedly connected with one end of the piston push rod (16), guide sliding rods (17) are respectively and fixedly connected to the bottom edges of the top plates of the L-shaped vertical plates (14) on the two sides of the piston push rod (16), the guide sliding rods (17) are arranged in bilateral symmetry relative to the piston push rod (16), and the outer wall of each guide sliding rod (17) is movably sleeved with a polishing device (2);

the polishing device (2) comprises a movable plate (21), trepanning holes (22), a hanging plate (23), a motor (24) and a polishing component (25), the trepanning holes (22) are respectively arranged at the two side edges of the upper end of the movable plate (21), the movable plate (21) is movably sleeved on the outer wall of the guide slide bar (17) through the trepanning holes (22), the movable plate (21) is fixedly connected to the bottom of the piston push rod (16) through a fixing bolt, the lower end of the movable plate (21) at the inner side of the trepanning (22) is fixedly connected with a hanging plate (23), and the hanging plate (23) and the movable plate (21) are of an integrated structure, the middle part of the upper end of the hanging plate (23) is provided with a motor (24) through a fixed bolt, a transmission shaft at the lower end of the motor (24) penetrates through the hanging plate (23) and extends to the lower end thereof, and the tail end is fixedly connected with a grinding assembly (25), and the grinding assembly (25) is suspended right above the grinding table (13).

2. A sander for plastic manufacture as set forth in claim 1, wherein: the polishing platform (13) comprises a pedestal (131), a raised bead (132), a supporting seat (133), a placing groove (134) and a leak hole (135), wherein the pedestal (131) is of a hollow structure with an upper end open, the inner wall of the pedestal (131) is provided with the raised bead (132) in an integral manner, the side wall of the raised bead (132) is of a funnel-shaped structure, the supporting seat (133) is arranged in the middle of the upper end of the bottom plate of the pedestal (131), the supporting seat (133) and the bottom plate of the pedestal (131) form an integral structure, the placing groove (134) is arranged at the upper end of the supporting seat (133), the leak hole (135) is uniformly arranged at the upper end of the bottom plate of the pedestal (131) between the raised bead (132) and the side wall of the supporting seat (133) in a spaced manner, the leak hole (135) is uniformly arranged in an annular manner, and the.

3. A sander for plastic manufacture as set forth in claim 2, wherein: the lower end of the top plate of the base (11) outside the port at the bottom of the leak hole (135) is fixedly connected with a dust collecting funnel (18), the dust collecting funnel (18) covers the leak hole (135) at the inner side of the port at the top of the dust collecting funnel, the lower end of the dust collecting funnel (18) is fixedly connected with a dust collecting filter cylinder (19), a through hole (110) is formed in the side wall of the base (11) on one side of the dust collecting filter cylinder (19), the inner wall of one side of the port of the through hole (110) is fixedly connected with one end of a movable door (111) through a hinge, and a grid is arranged.

4. A sander for plastic manufacture as set forth in claim 1, wherein: grinding assembly (25) includes connecting piece (251), jib (252), metal connector (253), installation cover (254), mounting hole (255), permanent magnet (256) and emery wheel (257), connecting piece (251) are installed in the bottom of motor (24) transmission shaft through fixing bolt, and the lower extreme fixedly connected with jib (252) of connecting piece (251), the bottom of jib (252) is provided with integrative metal connector (253), mounting hole (255) have been seted up to the upper end of installation cover (254), it has permanent magnet (256) to inlay in mounting hole (255), the lower extreme of jib (252) passes through metal connector (253) and adsorbs the top of being fixed in permanent magnet (256) in mounting hole (255), and the bottom of installation cover (254) is provided with emery wheel (257).

5. A sanding machine for plastics manufacture according to claim 4, characterized in that: be close to integrative support (258) of bottom punishment difference symmetry fixedly connected with on jib (252) both sides outer wall of metallic interconnect head (253) upper end, spacing (259) have been cup jointed on the axostylus axostyle outer wall between support (258) lateral wall respectively, spacing (259) and fixed cutting ferrule (259A) phase-match of installing jacket (254) top both sides, and metallic interconnect head (253) block when mounting hole (255) are inside, spacing (259) laminating installing jacket (254) top sets up and plug in the inner chamber of fixed cutting ferrule (259A).

6. A sanding machine for plastics manufacture according to claim 5, characterized in that: the lifting rod (252) at the upper end of the support (258) is symmetrically provided with a shifting plate (259B) on the outer walls of two sides respectively, the shifting plate (259B) is installed in a fan-blade-shaped inclined mode, a sealing cover (259C) is movably sleeved on the outer wall of the lifting rod (252) at the upper end of the shifting plate (259B), the sealing cover (259C) is matched with the size of the protruding bead (132), and when the sealing cover (259C) falls on the upper end of the protruding bead (132), the shifting plate (259B) is not in contact with the inner wall of the sealing cover (259C).

7. A sanding machine for plastics manufacture according to claim 4, characterized in that: connecting piece (251) includes casing (2511), bellying (2512), sleeve (2513), stop screw (2514), horizontal pole (2515) and knob (2516), casing (2511) fixed connection is in the bottom of motor (24) transmission shaft, and both sides outer wall middle part department of casing (2511) symmetry respectively is provided with integrative bellying (2512), sleeve (2513) sets up respectively in the upper end both sides of casing (2511), stop screw (2514) have been cup jointed respectively to sleeve (2513) inside, the bottom of stop screw (2514) all extends to inside casing (2511), and with horizontal pole (2515) swing joint that sets up between casing (2511) both sides inner wall, the one end of horizontal pole (2515) runs through casing (2511) lateral wall and extends to its outside, and end fixedly connected with knob (2516).

8. A sander for plastic manufacture as set forth in claim 7, wherein: the lateral wall middle part department of horizontal pole (2515) is provided with integrative fixed piece (2517) of hanging, and the top that fixedly cup joints jib (252) on the axostylus axostyle outer wall of fixed piece (2517) of hanging, and correspond sleeve (2513) punishment on the lateral wall at the both ends of horizontal pole (2515) of fixed piece (2517) both sides and do not offered threaded hole (2518), and threaded hole (2518) are the cross setting, and horizontal pole (2515) through threaded connection stop screw (2514) of threaded hole (2518).