CN112917281B

CN112917281B - Furniture manufacturing is with two-sided polisher

Info

Publication number: CN112917281B
Application number: CN202110089792.4A
Authority: CN
Inventors: 徐挺
Original assignee: Wenzhou Polytechnic
Current assignee: Chongqing Smileton Furniture Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2022-03-01
Anticipated expiration: 2041-01-22
Also published as: CN112917281A

Abstract

The invention discloses a double-sided polisher for furniture manufacturing, which has the technical scheme that the polisher comprises a polishing assembly and a driving assembly, wherein the polishing assembly comprises a movable platform, a driven block, an upper polishing piece and a lower polishing piece; the driving assembly comprises a driving turntable, a driving rod and a stepping motor, wherein the stepping motor drives the driving turntable to rotate, and the driving turntable drives the upper polishing piece to perform winding polishing motion along the target rod. According to the invention, the grinding assembly is driven by the driving assembly to grind the large plate from different directions in a winding manner, so that the surface of the large plate achieves a flat cutting effect, and double-sided grinding under one power source is realized by linkage of the upper grinding piece and the lower grinding piece, so that not only is the energy saved, but also the grinding efficiency of the large plate is improved.

Description

Furniture manufacturing is with two-sided polisher

Technical Field

The invention relates to the technical field of plate processing, in particular to a double-sided grinding machine for furniture manufacturing.

Background

From production to sale of each piece of simple furniture, the back of each piece of simple furniture needs a series of complicated process supports, namely raw material selection and drying balance; wood processing (cutting, polishing, assembling and polishing again); paint spraying (wiping, painting a base color, painting a primer for several times, painting finish paint and drying); and (6) packaging (checking, coloring, blowing dust and packaging).

Wherein sanding is an important part of the board handling process and the aesthetic appearance of the furniture surface is strongly dependent on the quality of the sanding. Whether solid wood enterprises or plate furniture enterprises, the polishing workshops and the polishing workshops are relatively large in number, and the polishing workshops are the most problematic. One of the headaches is the problem of how to treat large assembled boards to obtain a smooth surface.

Good big board is often too wide in the makeup, therefore its process of polishing wastes time and energy more, and because the size opposite sex of each makeup itself, often adopt one-way polishing in addition traditional polisher, the surface of big board is polished inhomogeneously easily like this, and improper operation leaves too dark polishing vestige easily, is unfavorable for follow-up polishing to the cover of polishing vestige.

Combining the reason above, designing a section can carry out multi-direction the polishing to each makeup, and the polisher that improves the efficiency of polishing simultaneously is the problem place that this application was considered.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a double-side grinding machine for furniture manufacturing, which can realize multi-directional grinding of all jointed boards and double-side grinding of large boards, so that the effect of uniform grinding is achieved and the grinding efficiency is improved.

In order to achieve the purpose, the invention provides the following technical scheme: a double-sided polisher for furniture manufacturing comprises a clamping device for clamping a large plate and a polishing device for polishing the large plate, wherein the polishing device comprises a rack, a polishing assembly and a driving assembly, the polishing assembly is arranged on the rack and can polish the large plate on two sides, the driving assembly is arranged on the rack and is used for driving the polishing assembly to polish in multiple directions, the polishing assembly comprises a movable platform horizontally arranged on a support, a driven block horizontally and rotatably connected with the movable platform, an upper polishing piece horizontally and rotatably connected to the upper surface of the driven block and used for polishing the upper surface of the large plate, and a lower polishing piece horizontally and fixedly connected to the lower surface of the driven block and used for polishing the lower surface of the large plate, the spacing size between the upper polishing piece and the lower polishing piece is matched with the thickness size of the large plate, the movable platform is used for supporting the driven block to keep a horizontal state, and a target rod for rotatably connecting the driven block is arranged on the movable platform, the upper polishing piece can drive one end of the driven block to transmit and is limited by the target rod to swing by the other end of the driven block, so that the lower polishing piece fixedly connected with the other end of the driven block is driven to perform linkage polishing on the lower surface of the large plate;

the drive assembly comprises a drive turntable, a drive rod and a stepping motor, wherein the drive turntable is arranged on the rack and used for driving the upper polishing part to move, the drive rod is arranged between the drive turntable and the upper polishing part, the stepping motor is arranged on the rack and is in transmission connection with the drive turntable, the stepping motor rotates forwards and reversely to 180 degrees and rotates in alternate directions after specified time, one end of the drive rod is arranged on the outer edge of the drive turntable, the other end of the drive rod is in rotation connection with the upper polishing part, the drive rod can drive the upper polishing part to be linked along with the rotation of the drive turntable, the drive turntable is arranged in a circular structure, and the stepping motor drives the drive turntable to rotate in the process, and the drive turntable drives the upper polishing part to perform winding polishing motion along the target rod.

Further, the subassembly of polishing sets up two sets ofly, is located the relative both sides of big board respectively, be provided with on the drive carousel and rotate the motor and connect the cam that rotates the motor output and set up the gyration track on the drive carousel and can be at the slider that the gyration track internal reciprocating slided, the tip of slider is provided with the connecting block that supplies the actuating lever to connect respectively, the connecting block surface becomes the arc structure, be provided with the movable spout that supplies to rotate the motor output and run through on the slider, the cam is at the pivoted in-process and the surface butt of connecting block to thereby promote one connecting block to remove one by one and drive the slider and slide in the gyration track.

Further, go up the piece of polishing including being used for polishing the first sand table of big board upper surface and with passive piece be connected and be used for holding the first holding plate of first sand table, down the piece of polishing all is provided with the quick change structure including the second that is used for polishing big board lower surface and between second sand table and the second holding plate.

Furthermore, the quick-change structure comprises a first opening, a first retaining ring, a second opening and a second retaining ring, wherein the first opening is arranged on the first accommodating plate and used for being abutted against the first sand disc, the first retaining ring is hinged to the first accommodating plate, the second opening is arranged on the second accommodating plate and used for being abutted against the second sand disc, the second retaining ring is hinged to the second accommodating plate, the first opening and the first retaining ring are surrounded to form a first clamping hole used for enabling the first sand disc to be ejected and abutted against the upper surface of the large plate, the second opening and the second retaining ring are surrounded to form a second clamping hole used for enabling the second sand disc to be ejected and abutted against the lower surface of the large plate, a first buckle is arranged on the free end of the first retaining ring, a first clamping groove used for being fastened with the first buckle is arranged on the first opening, a second buckle is arranged on the free end of the second retaining ring, and a second clamping groove used for being fastened with the second buckle is arranged on the second opening.

Furthermore, the driven block is provided with an upper screw rod for connecting an upper polishing piece and a lower screw rod for connecting a lower polishing piece, the upper screw rod is provided with an upper adjusting nut for adjusting the height of the upper polishing piece from the upper surface of the driven block, and the lower screw rod is provided with a lower adjusting nut for adjusting the height of the lower polishing piece from the lower surface of the driven block.

Further, the clamping device comprises a machine tool, a clamping component arranged on the machine tool and used for clamping and leveling the large plate from the height direction, and a clamping component used for clamping and leveling the jointed plate from the width direction, the clamping assembly and the clamping assembly are arranged on a machine tool, the machine tool is provided with a level ruler for measuring the level degree of the surface of the large panel, the clamping assembly comprises two horizontal plates positioned on the upper surface and the lower surface of the large plate, a height adjusting structure for adjusting the height dimension between the two horizontal plates is arranged between the horizontal plates, the clamping component comprises two vertical plates positioned in the width direction of the large plate, the vertical plates are arranged between the two horizontal plates and are connected with the horizontal plates in a sliding way, the horizontal plate is provided with a horizontal sliding groove for the vertical plate to slide, a horizontal screw rod arranged on the horizontal sliding groove for the vertical plate to slide and be connected, and a fastening nut screwed with the horizontal screw rod and used for adjusting the distance between the two vertical plates.

Further, the frame is vertically arranged on the machine tool, the frame is connected with the machine tool in a horizontal sliding mode, the sliding direction of the frame is the length direction of the machine tool, and a conveying belt and a conveying motor are arranged on the machine tool, wherein the conveying belt is used for driving the frame to slide along the length direction of the large plate, and the conveying motor is used for conveying the conveying belt.

In conclusion, the invention has the following beneficial effects: the large plate is polished from different directions by driving the polishing assembly through the driving assembly in a winding mode, so that the surface of the large plate reaches a flat cutting effect, the two sides of the large plate are polished under one power source through the linkage of the upper polishing piece and the lower polishing piece, and the energy is saved and the polishing efficiency of the large plate is also improved.

Drawings

FIG. 1 is a schematic perspective view of a double-side sanding for furniture manufacture;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is a schematic structural diagram of a driving assembly;

fig. 4 is a partial structural view of the clamping device.

Reference numerals: 1. a frame; 11. polishing the assembly; 111. a movable platform; 112. a passive block; 113. polishing the workpiece; 1131. a first sand table; 1132. a first housing plate; 1133. a first retaining ring; 1134. a first buckle; 1135. a first card slot; 114. a lower polishing part; 115. a target bar; 12. a drive assembly; 121. driving the turntable; 122. a drive rod; 123. a stepping motor; 124. a cam; 125. a revolving track; 126. a slider; 127. connecting blocks; 2. a machine tool; 21. a clamping assembly; 211. a horizontal plate; 212. a height adjustment structure; 213. a horizontal chute; 214. a horizontal screw; 215. fastening a nut; 22. a clamping assembly; 221. a vertical plate; 23. and (4) a conveyor belt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-4, a double-side grinding machine for furniture manufacture comprises a clamping device for clamping a large plate and a grinding device for grinding the large plate, wherein the grinding device comprises a frame 1, a grinding assembly 11 which is arranged on the frame 1 and can grind the large plate in double sides, and a driving assembly 12 which is arranged on the frame 1 and is used for driving the grinding assembly 11 to grind in multiple directions, the grinding assembly 11 comprises a movable platform 111 which is horizontally arranged on a support, a driven block 112 which is horizontally and rotatably connected with the movable platform 111, an upper grinding piece 113 which is horizontally and rotatably connected with the upper surface of the driven block 112 and is used for grinding the upper surface of the large plate, and a lower grinding piece 114 which is horizontally and fixedly connected with the lower surface of the driven block 112 and is used for grinding the lower surface of the large plate, the distance between the upper grinding piece 113 and the lower grinding piece 114 is matched with the thickness of the large plate, the movable platform 111 is used for supporting the driven block 112 to keep in a horizontal state, the movable platform 111 is provided with a target rod 115 for the driven block 112 to be rotatably connected, the driven block 112 is provided with a rotating hole for the target rod 115 to pass through, the driven block 112 is arranged in a strip structure, the upper polishing piece 113 and the lower polishing piece 114 are respectively arranged at two ends of the driven block 112, and the upper polishing piece 113 can drive one end of the driven block 112 to transmit and is limited by the target rod 115 to swing at the other end of the driven block 112 in the process of polishing the upper surface of the large plate in multiple directions, so that the lower polishing piece 114 fixedly connected with the other end of the driven block 112 is driven to be in linkage polishing on the lower surface of the large plate; go up and polish 113, passive piece 112, polish 114 between the cooperation linkage down to realized polishing the two-sided of big board on the basis that only needs a power supply, can the energy saving more, promote efficiency.

The driving assembly 12 comprises a driving turntable 121 arranged on the frame 1 and used for driving the upper polishing part 113 to move, a driving rod 122 arranged between the driving turntable 121 and the upper polishing part 113, and a stepping motor 123 arranged on the frame 1 and in transmission connection with the driving turntable 121, one end of the driving rod 122 is arranged at the outer edge of the driving turntable 121, the other end of the driving rod is in rotation connection with the upper polishing part 113, the driving rod 122 can drive the upper polishing part 113 to be linked along with the rotation of the driving turntable 121, the driving turntable 121 is arranged in a circular structure, the stepping motor 123 drives the driving turntable 121 to rotate, and the driving turntable 121 drives the upper polishing part 113 to perform winding polishing movement along the target rod 115.

One end fixed connection of actuating lever 122, the other end rotates to be connected, here can be close to the one end fixed connection of drive carousel 121 on drive carousel 121, the other end that is close to last piece 113 of polishing rotates to be connected on last piece 113 of polishing, also can be close to the one end rotation of drive carousel 121 and connect on drive carousel 121, the other end fixed connection that is close to last piece 113 of polishing is on last piece 113 of polishing, just so can realize when step motor 123 drives drive carousel 121 and rotates, can realize through actuating lever 122 that last piece 113 of polishing is driven to carry out the winding motion.

In order to further expand the diversity of the polishing paths of the upper polishing member 113 to achieve a better polishing effect, the stepping motor 123 can rotate forward to 180 degrees and rotate backward to 180 degrees, and the rotation directions are alternated after a specified time, so that the polishing traces left after the original forward polishing can be covered, and the surface of the whole large plate is polished more smoothly.

In summary, the driving assembly 12 drives the polishing assembly 11 to polish the large plate from different directions in a winding manner, so that the surface of the large plate can achieve a flat cutting effect, and the upper polishing member 113 is linked with the lower polishing member 114 to polish the two sides of the large plate under one power source, thereby saving energy and improving the polishing efficiency of the large plate.

Grinding assembly 11 sets up two sets ofly, be located the relative both sides of big board respectively, be provided with on the drive carousel 121 and rotate the motor, and connect the cam 124 at rotating the motor output, and set up the gyration track 125 on drive carousel 121, and the slider 126 that can reciprocate to slide in gyration track 125, the tip of slider 126 is provided with the connecting block 127 that supplies the actuating lever 122 to connect respectively, connecting block 127 surface becomes the arc structure, be provided with the activity spout that supplies to rotate the motor output and run through on the slider 126, cam 124 is at the pivoted in-process and the surface butt of connecting block 127, thereby promote a connecting block 127 to remove one by one and drive slider 126 and slide in gyration track 125.

The cooperation between revolving track 125, slider 126, connecting block 127, cam 124 utilizes cam 124 structural principle to drive slider 126 and reciprocate to slide in revolving track 125, has realized the linkage of multiunit grinding assembly 11, increases extra glide path for last grinding member 113 simultaneously, further practices thrift the power supply and obtains more angles of polishing for grinding assembly 11 can be more meticulous to polishing of big board.

The upper sanding element 113 comprises a first abrasive disc 1131 for sanding the upper surface of the large plate and a first accommodating plate 1132 which is connected with the passive block 112 and used for accommodating the first abrasive disc 1131, the lower sanding element 114 comprises a second abrasive disc for sanding the lower surface of the large plate and a second accommodating plate for accommodating the second abrasive disc, and quick-change structures are arranged between the first abrasive disc 1131 and the first accommodating plate 1132 and between the second abrasive disc and the second accommodating plate. In the plate polishing process, polishing tools with proper meshes need to be reasonably selected and replaced one by one. The key points of the method are that sand paper or a sand disc with the same mesh number is not used for polishing for a long time to avoid the excessive polishing traces; no jumping (referring to the mesh of sandpaper or sanding disc) should occur, for example, from 200# to 600# or 800# making it difficult for subsequent sanding tools to quickly cover the sanding marks of the previous sanding tool and thereby fail to produce a smooth sanded surface. Therefore, the sand table is replaced by a frequently-operated step in the polishing process, the sand table can be replaced more conveniently through the quick-change structure, the time for replacing the sand table is shortened, and the overall polishing efficiency is improved.

The quick-change structure comprises a first opening, a first retaining ring 1133, a second opening and a second retaining ring, wherein the first opening is arranged on the first accommodating plate 1132 and used for being abutted against the first sand disc 1131, the second opening is arranged on the second accommodating plate and used for being abutted against the second sand disc, the second retaining ring is hinged against the second accommodating plate, the first opening and the first retaining ring 1133 surround to form a first clamping hole used for enabling the first sand disc 1131 to emerge and abut against the upper surface of the large plate, the second opening and the second retaining ring surround to form a second clamping hole used for enabling the second sand disc to emerge and abut against the lower surface of the large plate, a first clamping buckle 1134 is arranged at the free end of the first retaining ring 1133, a first clamping groove 1135 used for being buckled with the first clamping buckle 1134 is arranged on the first opening 113, a second clamping buckle is arranged at the free end of the second retaining ring, and a second clamping groove used for being buckled with the second clamping buckle is arranged on the second opening. The first snap ring 1133 and the first accommodating plate 1132 can be quickly buckled by adopting a buckling mode to form a first clamping hole for accommodating the first sand table 1131; through the quick lock of second buckle and second holding plate, form the second buckle that holds the second abrasive disc, set up like this and can conveniently change the abrasive disc of polishing of different mesh numbers step by step fast at the in-process of polishing to improve the efficiency of whole process of polishing.

The upper screw rod for connecting the upper polishing piece 113 and the lower screw rod for connecting the lower polishing piece 114 are arranged on the passive block 112, the upper screw rod is provided with an upper adjusting nut for adjusting the height of the upper polishing piece 113 from the upper surface of the passive block 112, and the lower screw rod is provided with a lower adjusting nut for adjusting the height of the lower polishing piece 114 from the lower surface of the passive block 112. Go up the screw rod and go up the cooperation between the adjusting nut, down the screw rod and down the cooperation between the adjusting nut can adjust the height dimension between polishing 113 and the lower polishing 114, can make the height dimension between polishing 113 and the lower polishing 114 and the height dimension looks adaptation of big board through this kind of regulation, make and go up polishing 113 when being polished to the big board upper surface by drive assembly 12 drive, polishing 114 down when being polished to the big board lower surface by the linkage of polishing 113, can both keep the level with the big board surface, thereby ensure that the big board receives the back of polishing, its surface is level and smooth.

The clamping device comprises a machine tool 2, a clamping assembly 21 and a clamping assembly 22, wherein the clamping assembly 21 is arranged on the machine tool 2 and used for clamping large plates from the height direction, the clamping assembly 22 is used for clamping jointed plates from the width direction, the clamping assembly 21 and the clamping assembly 22 are arranged on the machine tool 2 in multiple groups, a horizontal ruler used for measuring the surface level degree of the large plates is arranged on the machine tool 2, the clamping assembly 21 comprises two horizontal plates 211 positioned on the upper surface and the lower surface of the large plates, a height adjusting structure 212 used for adjusting the height dimension between the two horizontal plates 211 is arranged between the horizontal plates 211, the clamping assembly 22 comprises two vertical plates 221 positioned in the width direction of the large plates, the vertical plates 221 are arranged between the two horizontal plates 211 and connected with the horizontal plates 211 in a sliding mode, a horizontal sliding groove 213 used for sliding the vertical plates 221 and a horizontal screw 214, arranged on the horizontal sliding groove 213 and used for sliding connection of the vertical plates 221, And a fastening nut 215 screwed with the horizontal screw 214 for adjusting the size of the distance between the two vertical plates 221.

The horizontal ruler can directly display angular displacement by the level bubble by utilizing the principle of liquid level, measure the deviation degree of the surface of the large plate relative to the horizontal position, the vertical position and the inclined position, and accordingly ensure that the large plate is horizontally clamped from the height direction by means of the constraint force of the clamping assembly 21, so that all jointed plates are on the same horizontal plane; clamping assembly 22 is used to further secure the adhesion between the panels, so that the panels are tightly adhered to each other, i.e., to enhance the adhesion between the panels.

In actual operation, can place the makeup earlier between horizontal plate 211, make each makeup be located the same as the horizontal plane through altitude mixture control structure 212, rethread fastening nut 215 further reduces the clearance between the makeup for the makeup closely pastes synthetic big board, is favorable to going on smoothly of follow-up big board surface polishing operation like this. The height adjustment structure 212 may be implemented in various manners, such as a nut and screw structure, a scissor lift structure, and the like.

The vertical setting of frame 1 is on lathe 2, and frame 1 slides with the lathe 2 level and is connected, and the direction of sliding of frame 1 is the length direction of lathe 2, is provided with on the lathe 2 to be used for driving frame 1 along the conveyer belt 23 that the length direction of big board slided and be used for conveyer belt 23 driven conveying motor. The additional conveyor belt 23 can drive the frame 1 to slide on the machine tool 2, so that the grinding range of the grinding assembly 11 is enlarged.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a furniture is two-sided polisher for manufacturing, includes clamping device that is used for centre gripping big board and is used for polishing the grinding device who polishes to big board, characterized by: the polishing device comprises a rack (1), a polishing assembly (11) arranged on the rack (1) and used for polishing two surfaces, and a driving assembly (12) arranged on the rack (1) and used for driving the polishing assembly (11) to polish in multiple directions, wherein the polishing assembly (11) comprises a movable platform (111) horizontally arranged on a support, a driven block (112) horizontally and rotatably connected with the movable platform, an upper polishing piece (113) horizontally and rotatably connected to the upper surface of the driven block (112) and used for polishing the upper surface of a large plate, and a lower polishing piece (114) horizontally and fixedly connected to the lower surface of the driven block (112) and used for polishing the lower surface of the large plate, the spacing size of the upper polishing piece (113) and the lower polishing piece (114) is matched with the thickness size of the large plate, and the movable platform (111) is used for supporting the driven block (112) to keep a horizontal state, the movable platform (111) is provided with a target rod (115) for the driven block (112) to be rotatably connected, the driven block (112) is provided with a rotating hole for the target rod (115) to pass through, the driven block (112) is arranged in a strip structure, the upper polishing piece (113) and the lower polishing piece (114) are respectively arranged at two ends of the driven block (112), the upper polishing piece (113) can drive one end of the driven block (112) to transmit in the process of multi-directional polishing of the upper surface of the large plate and is limited by the target rod (115) to swing at the other end of the driven block (112), so that the lower polishing piece (114) fixedly connected with the other end of the driven block (112) is driven to be in linkage polishing on the lower surface of the large plate;

the driving assembly (12) comprises a driving turntable (121) arranged on the rack (1) and used for driving the upper grinding piece (113) to move, a driving rod (122) arranged between the driving turntable (121) and the upper grinding piece (113), and a stepping motor (123) arranged on the rack (1) and in transmission connection with the driving turntable (121), wherein the stepping motor (123) positively and reversely rotates to 180 degrees, and after the designated time, the rotation direction is alternated, one end of the driving rod (122) is arranged at the outer edge of the driving turntable (121), the other end is rotationally connected with the upper grinding piece (113), the driving rod (122) can drive the upper polishing piece (113) to be linked along with the rotation of the driving turntable (121), the driving turntable (121) is arranged in a circular structure, and in the process that the stepping motor (123) drives the driving turntable (121) to rotate, the driving turntable (121) drives the upper polishing piece (113) to perform a winding polishing motion along the target rod (115).

2. The double-sided sander for furniture manufacture of claim 1, wherein: grinding assembly (11) sets up two sets ofly, is located the relative both sides of big board respectively, be provided with on drive carousel (121) and rotate the motor and connect cam (124) of rotating the motor output and set up gyration track (125) on drive carousel (121) and can be at the slider (126) that the reciprocal slided of gyration track (125), the tip of slider (126) is provided with respectively and supplies connecting block (127) that actuating lever (122) are connected, connecting block (127) surface becomes the arc structure, be provided with the movable chute that supplies to rotate the motor output and run through on slider (126), cam (124) are at the surface butt of pivoted in-process with connecting block (127) to thereby promote one connecting block (127) to remove one by one and drive slider (126) and slide in gyration track (125).

3. The double-sided sander for furniture manufacture of claim 1, wherein: go up abrasive article (113) including first sand table (1131) that is used for polishing big board upper surface and with passive piece (112) be connected first container plate (1132) that is used for holding first sand table (1131), abrasive article (114) are including the second sand table that is used for polishing big board lower surface and the second container plate that is used for holding the second sand table down, all be provided with quick change structure between first sand table (1131) and first container plate (1132) and between second sand table and the second container plate.

4. The double-sided sander for furniture manufacture of claim 3, wherein: the quick-change structure comprises a first opening arranged on the first containing plate (1132) and used for abutting against the first sand disk (1131), a first retaining ring (1133) hinged with the first containing plate (1132), a second opening arranged on the second containing plate and used for abutting against the second sand disk, and a second retaining ring hinged with the second containing plate, the first opening and the first retaining ring (1133) surround to form a first clamping hole for the first sand disc (1131) to protrude and abut against the upper surface of the large plate, the second opening and the second retaining ring surround to form a second clamping hole for the second sand table to pop out and abut against the lower surface of the large plate, a first buckle (1134) is arranged at the free end of the first retaining ring (1133), a first clamping groove (1135) for buckling the first buckle (1134) is arranged on the first opening, and a second buckle is arranged at the free end of the second retaining ring, and a second clamping groove for fastening the second buckle is arranged on the second opening.

5. The double-sided sander for furniture manufacture of claim 1, wherein: the polishing device is characterized in that an upper screw for connecting an upper polishing piece (113) and a lower screw for connecting a lower polishing piece (114) are arranged on the passive block (112), an upper adjusting nut for adjusting the height of the upper surface of the upper polishing piece (113) away from the passive block (112) is arranged on the upper screw, and a lower adjusting nut for adjusting the height of the lower surface of the lower polishing piece (114) away from the passive block (112) is arranged on the lower screw.

6. The double-sided sander for furniture manufacture of claim 1, wherein: clamping device is including lathe (2) and clamping component (22) that set up on lathe (2) and be used for following the tight makeup of clamping component (21) of direction of height clamp tie-in and be used for following width direction clamp-in makeup, clamping component (21) and clamping component (22) set up the multiunit on lathe (2), be provided with the spirit level that is used for measuring big board surface level degree on lathe (2), clamping component (21) are including two horizontal plates (211) that are located big board upper and lower, be provided with between horizontal plate (211) and be used for adjusting height dimension's height control structure (212) between two horizontal plates (211), clamping component (22) are including two vertical plates (221) that are located big board width direction, vertical plate (221) set up between two horizontal plates (211) and with horizontal plate (211) connection that slides, be provided with horizontal chute (213) that are used for supplying vertical plate (221) to slide on horizontal plate (211), And a horizontal screw rod (214) which is arranged on the horizontal sliding groove (213) and is used for the sliding connection of the vertical plates (221), and a fastening nut (215) which is in threaded connection with the horizontal screw rod (214) and is used for adjusting the distance between the two vertical plates (221).

7. The double-sided sander for furniture manufacture of claim 6, wherein: frame (1) is vertical to be set up on lathe (2), frame (1) and lathe (2) horizontal slip are connected, the direction of sliding of frame (1) is the length direction of lathe (2), be provided with on lathe (2) and be used for driving frame (1) along conveyer belt (23) that big board length direction slided and be used for conveyer belt (23) driven conveying motor.