CN112873441B

CN112873441B - Processing mechanism of plywood

Info

Publication number: CN112873441B
Application number: CN202110091733.0A
Authority: CN
Inventors: 刘夫贵
Original assignee: Guangxi Guigang Wangda Wood Industry Co ltd
Current assignee: Guangxi Guigang Wangda Wood Industry Co ltd
Priority date: 2021-01-23
Filing date: 2021-01-23
Publication date: 2022-05-03
Anticipated expiration: 2041-01-23
Also published as: CN112873441A

Abstract

The invention discloses a processing mechanism of plywood, relating to the technical field of processing devices, and the processing mechanism of the plywood comprises: the base is of a rectangular plate-shaped structure, and four corners below the base are in threaded connection with supporting legs; the workbench is fixedly arranged above the base; the lifting mechanical assembly is fixedly arranged on the upper surface of the base and positioned on one side of the workbench, and a supporting cross rod is arranged on one side of the lifting mechanical assembly through a bolt; cutting mechanism, fixed mounting is in the below of the one end that lifting machine subassembly was kept away from to the support horizontal pole, and cutting mechanism is located the workstation directly over, supports the lift that the horizontal pole drove cutting mechanism, links each other between cutting mechanism and the lifting machine subassembly, and cutting mechanism is used for cutting the plywood on the workstation, and cutting mechanism carries out precutting earlier before the cutting simultaneously, can cut along the groove of precutting when making things convenient for the back cutting, improves the quality and the efficiency of cutting greatly.

Description

Processing mechanism of plywood

Technical Field

The invention relates to the technical field of plywood processing, in particular to a processing mechanism of plywood.

Background

The existing plywood generally needs to be cut, but the existing cutting device is not precut, and the problem of poor quality of plywood cuts easily occurs after the existing cutting device is cut by a knife. Therefore, a plywood processing mechanism is required to solve the above-mentioned problems.

Disclosure of Invention

The invention provides a processing mechanism of a plywood, aiming at solving the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a processing agency of plywood includes:

the base is of a rectangular plate-shaped structure, and supporting legs are connected to four corners below the base in a threaded mode;

a workbench fixedly arranged above the base;

the lifting mechanical assembly is fixedly arranged on the upper surface of the base and positioned on one side of the workbench, and a supporting cross rod is arranged on one side of the lifting mechanical assembly through a bolt;

the cutting mechanism is fixedly installed below one end, far away from the lifting mechanical assembly, of the supporting cross rod, is located right above the workbench, the supporting cross rod drives the cutting mechanism to lift, and the cutting mechanism is mutually linked with the lifting mechanical assembly through the supporting cross rod.

In one embodiment, the workbench comprises four groups of fixed blocks, the four groups of fixed blocks comprise a first fixed block, a second fixed block, a third fixed block and a fourth fixed block, support rods are sequentially connected between the first fixed block, the second fixed block, the third fixed block and the fourth fixed block, first guide rods are fixedly connected between the first fixed block and the third fixed block and between the second fixed block and the fourth fixed block, a sliding block is connected on the first guide rod in a sliding manner, a support plate is fixedly connected above the sliding block, a moving block is fixedly connected to the lower surface of the support plate through bolts, a U-shaped groove is formed in one side of the moving block, a rack is arranged at the inner bottom of the U-shaped groove, a guide hole is formed in the middle of the support plate, guide grooves are formed in the two sides of the guide hole of the support plate, and a first proximity switch is mounted at the inner bottom of the guide hole, fixed mounting has step motor between third fixed block and the fourth fixed block, coaxial fixedly connected with toothed disc on step motor's the output, fixed mounting has the band pulley on the bracing piece between first fixed block and the second fixed block, the transmission is connected with the toothed belt between toothed disc and the band pulley, the middle part in toothed belt passes the U-shaped groove, and the meshing is connected between the one side that the toothed belt was taken to the toothed belt and the rack.

In one embodiment, the guide groove has a V-shape.

In one embodiment, the lifting mechanical assembly comprises a base fixedly mounted on the upper surface of the base, a U-shaped supporting frame is fixedly connected to one side of the upper portion of the base, bearing seats are mounted at the upper end and the lower end of the U-shaped supporting frame respectively, a lead screw is connected between the bearing seats, a first belt pulley is arranged at the upper end of the lead screw, a driving motor is fixedly mounted on the base and located on one side of the U-shaped supporting frame, a second belt pulley is connected to the upper end output end of the driving motor, a belt is connected between the second belt pulley and the first belt pulley in a transmission mode, a protective shell is arranged on the outer side of the second belt pulley, a nut is connected to the lead screw in a threaded mode, and a supporting cross rod is fixed on the nut.

In one embodiment, the cutting mechanism comprises a supporting seat fixedly connected with one side of the nut through a supporting cross rod, a rotating motor is fixedly mounted above the supporting seat, a screw spindle is in transmission connection with the lower end output end of the rotating motor, the lower end of the screw spindle penetrates through the supporting seat, second guide rods are fixedly connected to two sides of the lower end of the supporting seat, and sliding sleeve assemblies are connected to the screw spindle and the second guide rods in a sliding mode.

In one embodiment, the sliding sleeve assembly comprises a fixing plate, a threaded hole is formed in the middle of the fixing plate, round holes are formed in two sides, located in the threaded hole, of the fixing plate, the threaded hole is in threaded connection with the screw spindle, the round holes are in sliding insertion connection with the second guide rod, and mounting grooves are formed in two sides of the fixing plate.

In one embodiment, the fixing plate is provided with positioning holes at two sides of the mounting groove, the horizontal cutter is inserted into the mounting groove, and the positioning holes and the horizontal cutter are locked and fixed through bolts.

In one embodiment, the lower ends of the two second guide rods are fixedly connected with inclined precutting knives through bolts, the inclined precutting knives are arranged in a V shape, the lower ends of the inclined precutting knives incline towards the main shaft of the screw rod, the inclined precutting knives and the horizontal cutting knife are positioned on the same vertical plane, and the V-shaped structures of the inclined precutting knives are matched with the guide grooves in the supporting plate below the inclined precutting knives.

In one embodiment, a drill bit is fixedly mounted at the lower end of the screw spindle, and a second proximity switch is fixedly mounted below the screw spindle and above the drill bit.

In one embodiment, an air pump is mounted below the second guide rod.

In one embodiment, the lifting mechanical assembly is used for driving the cutting mechanism to move downwards, the rotating motor synchronously drives the screw spindle to rotate so as to drive the sliding sleeve assembly to descend and drive the drill bit to drill the plywood, the two inclined precuts synchronously precut the two opposite sides of the drilled hole until the two inclined precuts move into the guide groove, when the lower end of the drill bit penetrates through the plywood and a device below the fixing plate is close to the second proximity switch, the air pump is started to blow away chips drilled by the plywood, the first proximity switch is triggered to pause the driving motor when the lower end of the drill bit is contacted with the first proximity switch, the lifting mechanical assembly does not drive the cutting mechanism to ascend and descend, the rotating motor continuously works and drives the sliding sleeve assembly to continue descending, and finally the two horizontal cutters are used for cutting the plywood, until the lower surface of the sliding sleeve assembly abuts the plywood.

The invention has the beneficial effects that:

the plywood is placed on the supporting plate, the sliding block is fixedly connected below the supporting plate and is arranged between the sliding block and the first guide rod in a sliding mode, the supporting plate can be driven to move, the stepping motor is started, the rotation of the stepping motor can drive the gear belt to move, and the gear belt is meshed with the rack in the U-shaped groove below the supporting plate and is connected with the rack in the U-shaped groove, so that the plywood on the supporting plate can be driven to move; when the below device of fixed plate is close to with second proximity switch, install the air pump in the below of second guide arm, the air pump starts, can blow away the piece of drill bit to the plywood drilling, after the lower extreme of drill bit bored through the plywood, when the lower extreme of drill bit contacted with first proximity switch, driving motor no longer rotated, lifting machine subassembly no longer drove the sliding sleeve subassembly and goes up and down, and this moment, rotating motor continues work, rotating motor drives the sliding sleeve subassembly and continues to descend, the slope precutting is carried out the plywood with the precutting, horizontal cutter cuts the plywood, it stops to the plywood to reach to sliding sleeve subassembly's lower surface.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the present invention in partial cross-section;

FIG. 3 is a schematic view of the lift mechanism assembly of the present invention;

FIG. 4 is a schematic view of the structure of the working table of the present invention;

FIG. 5 is a schematic structural view of the sliding sleeve assembly of the present invention;

FIG. 6 is a schematic view of a pallet structure according to the present invention;

FIG. 7 is a schematic cross-sectional view of the present invention;

fig. 8 is an enlarged schematic view of a portion a of fig. 7 according to the present invention.

The reference numbers in the figures illustrate:

1. a base; 101. supporting legs; 2. a work table; 201. a fixed block; 2011. a first fixed block; 2012. a second fixed block; 2013. a third fixed block; 2014. a fourth fixed block; 202. a support bar; 203. a first guide bar; 204. a slider; 205. a support plate; 206. a moving block; 207. a U-shaped groove; 208. a rack; 209. a guide hole; 2010. a guide groove; 3. a lifting mechanical assembly; 301. a support rail; 302. a U-shaped support frame; 303. a bearing seat; 304. a lead screw; 305. a first belt pulley; 306. a drive motor; 307. a second belt reel; 308. a belt; 309. a protective shell; 3011. a base; 4. a cutting mechanism; 401. a support rail; 402. a supporting seat; 403. a rotating electric machine; 404. a screw spindle; 405. a second guide bar; 5. a first proximity switch; 6. a sliding sleeve assembly; 601. a fixing plate; 602. a threaded hole; 603. a circular hole; 604. mounting grooves; 605. positioning holes; 7. a horizontal cutter; 8. inclining the precutting knife; 9. a drill bit; 10. a second proximity switch; 11. a stepping motor; 12. a gear plate; 13. a pulley; 14. a gear belt; 15. an air pump.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-8, a plywood processing mechanism includes:

the base 1 is in a rectangular plate-shaped structure, and supporting legs 101 are connected to four corners below the base 1 in a threaded mode;

the workbench 2 is fixedly arranged above the base 1;

the lifting mechanical assembly 3 is fixedly arranged on the upper surface of the base 1 and positioned on one side of the workbench 2, and a supporting cross rod 301 is arranged on one side of the lifting mechanical assembly 3 through a bolt;

cutting mechanism 4, fixed mounting is in the below of the one end that lifting mechanical component 3 was kept away from to support horizontal pole 301, and cutting mechanism 4 is located workstation 2 directly over, supports horizontal pole 301 and drives the lift of cutting mechanism 4, and cutting mechanism 4 links each other through supporting between horizontal pole 301 and the lifting mechanical component 3.

When the automatic veneer cutting machine is specifically implemented, the arranged workbench 2 is used for supporting and fixing the veneer, the veneer can move on the workbench 2, automatic moving and cutting are conveniently achieved, the lifting mechanical assembly 3 can drive the cutting mechanism 4 to lift, the cutting mechanism 4 is used for cutting the veneer on the workbench 2, meanwhile, the cutting mechanism 4 performs pre-cutting before cutting, cutting along a pre-cutting groove can be conveniently performed during subsequent cutting, and cutting quality and efficiency are greatly improved.

Further, in order to facilitate that the plywood can move on the workbench 2, the workbench 2 comprises four groups of fixed blocks 201, the four groups of fixed blocks 201 comprise a first fixed block 2011, a second fixed block 2012, a third fixed block 2013 and a fourth fixed block 2014, a support rod 202 is sequentially connected between the first fixed block 2011, the second fixed block 2012, the third fixed block 2013 and the fourth fixed block 2014, a first guide rod 203 is fixedly connected between the first fixed block 2011 and the third fixed block 2013 and between the second fixed block 2012 and the fourth fixed block 2014, two sliders 204 are slidably connected on each first guide rod 203, a supporting plate 205 is fixedly connected on the four sliders 204 together, a moving block 206 is fixedly connected at the center of the lower surface of the supporting plate 205 through a bolt, a U-shaped groove 207 is formed at one side of the moving block 206, a rack 208 is arranged at the inner bottom of the U-shaped groove 207, a guide hole 209 is formed at the middle part of the supporting plate 205, guide grooves 2010 are formed at two sides of the supporting plate 205, which are positioned at the guide hole 209, a first proximity switch 5 is installed at the inner bottom of the guide hole 209, a stepping motor 11 is fixedly installed between the third fixing block 2013 and the fourth fixing block 2014, a gear disc 12 is coaxially and fixedly connected to the output end of the stepping motor 11, a belt pulley 13 is fixedly installed on the support rod 202 between the first fixing block 2011 and the second fixing block 2012, a gear belt 14 is connected between the gear disc 12 and the belt pulley 13 in a transmission manner, the middle of the gear belt 14 penetrates through the U-shaped groove 207, and the toothed surface of the gear belt 14 is meshed with the rack 208. The plywood is placed on the supporting plate 205, the lower part of the supporting plate 205 is fixedly connected to the sliding block 204, the sliding block 204 and the first guide rod 203 are arranged in a sliding mode, the supporting plate 205 can be moved conveniently, when the stepping motor 11 is started, the rotation of the stepping motor 11 can drive the gear belt 14 to transmit, the gear belt 14 is meshed with the rack 208 in the U-shaped groove 207 below the supporting plate 205 and is connected with the rack 208, the supporting plate 205 can be moved, it needs to be noted that the stepping motor 11 is a forward and reverse rotation motor, and the forward and reverse rotation of the stepping motor 11 is controlled to control the reciprocating movement of the supporting plate 205.

Further, as shown in fig. 1, fig. 2 and fig. 3, in order to facilitate the lifting of the cutting mechanism 4, the lifting mechanical assembly 3 includes a base 3011 fixedly mounted on the upper surface of the base 1, a U-shaped supporting frame 302 is fixedly connected to one side of the upper side of the base 3011, bearing seats 303 are both mounted on the upper end and the lower end of the U-shaped supporting frame 302, a lead screw 304 is connected between the two bearing seats 303, a first belt pulley 305 is arranged on the upper end of the lead screw 304, a driving motor 306 is fixedly mounted on the base 3011, the driving motor 306 is located on one side of the U-shaped supporting frame 302, a second belt pulley 307 is connected to the output end of the upper end of the driving motor 306, a belt 308 is connected to the second belt pulley 307 and the first belt pulley 305 in a transmission manner, a protective housing 309 is arranged on the outer side of the second belt pulley 307, a nut (not shown in the figure) is connected to the lead screw 304 in a threaded manner, and the supporting cross bar 301 is fixed to the nut. The second belt pulley 307 can be driven to rotate by arranging the driving motor 306, the second belt pulley 307 is in transmission connection with the first belt pulley 305 through the belt 308, so that the lead screw 304 can be driven to rotate, the nut arranged on the lead screw 304 can ascend or descend along the lead screw 304, and then the supporting cross rod 301 is driven to ascend and descend, and further the cutting mechanism 4 is driven to ascend and descend. The driving motor 306 is also a forward/reverse motor.

Further, as shown in fig. 1 to 8, in order to facilitate the cutting mechanism 4 to perform pre-cutting and cutting operations, the cutting mechanism 4 includes a supporting seat 402 fixedly connected to one side of the nut through a supporting cross rod 301, a rotating motor 403 is fixedly installed above the supporting seat 402, a screw spindle 404 is connected to an output end of a lower end of the rotating motor 403 in a transmission manner, a lower end of the screw spindle 404 penetrates through the supporting seat 402, second guide rods 405 are fixedly connected to two sides of the screw spindle 404, and a sliding sleeve assembly 6 is slidably connected to the screw spindle 404 and the second guide rods 405. The sliding sleeve assembly 6 comprises a fixing plate 601, a threaded hole 602 is formed in the middle of the fixing plate 601, round holes 603 are formed in the two sides of the fixing plate 601, which are located at the threaded hole 602, the threaded hole 602 is in threaded connection with the screw spindle 404, the two round holes 603 are respectively in sliding insertion connection with the two second guide rods 405, and mounting grooves 604 are formed in the two sides of the fixing plate 601. Positioning holes 605 are formed in the fixing plate 601 at two sides of the mounting groove 604, a horizontal cutter 7 is inserted into each mounting groove 604, and the positioning holes 605 and the horizontal cutters 7 are locked and fixed through bolts. The lower ends of the two second guide rods 405 are fixedly connected with inclined precutting knives 8 through bolts, the two inclined precutting knives 8 are arranged in a V shape, the lower ends of the inclined precutting knives 8 incline towards the screw spindle 404, the inclined precutting knives 8 and the horizontal cutting knife 7 are located on the same vertical plane, the guide grooves 2010 are in a V shape, and the V-shaped structures of the two inclined precutting knives 8 are matched with the guide grooves 2010 on the lower supporting plate 205. The drill bit 9 is fixedly installed at the lower end of the screw main shaft 404, the second proximity switch 10 is fixedly installed at the lower portion of the screw main shaft 404, and the second proximity switch 10 is located above the drill bit 9. The supporting base 402 is fixedly connected with the nut of the lifting mechanical assembly 3 through the supporting cross rod 301, and the lifting of the supporting base 402 can be driven when the nut is lifted; a rotating motor 403 is installed above the supporting seat 402, the rotating motor 403 can drive the lower end screw spindle 404 to rotate, two second guide rods 405 parallel to the screw spindle 404 are arranged on two sides of the screw spindle 404, the sliding sleeve assembly 6 can slide on the two second guide rods 405 along the screw spindle 404, the arranged second guide rods 405 can play a role in limiting the sliding sleeve assembly 6, and the arranged screw spindle 404 is used for driving the sliding sleeve assembly 6 to move. It should be noted that the rotating motor 403 is a forward and backward rotating motor, and a limiting member is disposed on a side surface of the supporting base 402 and a side surface of the U-shaped supporting frame 302, so that the supporting base 402 can be lifted along the U-shaped supporting frame 302.

In further implementation, the fixing plate 601 of the sliding sleeve assembly 6 is used for installing and fixing the horizontal cutting knife 7, the horizontal cutting knife 7 is installed in the installation groove 604 of the fixing plate 601 and then fixed through a bolt, and the installation groove 604 is matched with the back of the horizontal cutting knife 7. An air pump 15 is installed below the second guide rod 405.

The lifting mechanical assembly is used for driving the cutting mechanism to move downwards, the rotating motor 404 synchronously drives the screw spindle to rotate so as to drive the sliding sleeve assembly to descend, the drill bit performs drilling operation on the plywood, and the two inclined precuts synchronously perform precut on two opposite sides of a drilled hole until the two inclined precuts move into the guide grooves. After the plywood was drilled through to the lower extreme of drill bit 9, when the below device of fixed plate 601 was close to with second proximity switch 10, air pump 15 started to blow away the piece of plywood drilling, when the lower extreme of drill bit 9 contacted with first proximity switch 5 this moment, first proximity switch was triggered with pause driving motor 306, lifting machine subassembly 3 no longer drove the cutting mechanism and goes up and down, and rotating electrical machines 403 continues to work, rotating electrical machines 403 drives sliding sleeve subassembly 6 and continues to descend, finally utilize horizontal cutter 7 to cut the plywood, it stops to reach the plywood to the lower surface of sliding sleeve subassembly 6.

When the plywood is used, the plywood is placed on the supporting plate 205, the sliding block 204 is fixedly connected below the supporting plate 205, the supporting plate 205 can be driven to move by utilizing the sliding action between the sliding block 204 and the first guide rod 203, the stepping motor 11 is started, the rotation of the stepping motor 11 can drive the gear belt 14 to move, the gear belt 14 is in meshing transmission with the rack 208 in the U-shaped groove 207 below the supporting plate 205, so that the plywood on the supporting plate 205 can be driven to move, the rotation of the second belt disc 307 can be driven by arranging the driving motor 306, the second belt disc 307 is in transmission connection with the first belt disc 305 through the belt 308, so that the rotation of the lead screw 304 can be driven, the nut arranged on the lead screw 304 can ascend or descend along the lead screw 304, the supporting cross bar 301 is fixedly connected with the nut of the lifting mechanical component 3, and the supporting cross bar 301 is fixedly connected with the supporting seat 402, thereby the lifting of the nut can drive the lifting of the supporting seat 402, a rotating motor 403 is installed above the supporting seat 402, the rotating motor 403 can drive the rotation of the lower end screw spindle 404, two second guide rods 405 parallel to the screw spindle 404 are arranged on two sides of the screw spindle 404, the sliding sleeve assembly 6 can slide along the screw spindle 404 and the two second guide rods 405, the arranged second guide rods 405 can limit the sliding sleeve assembly 6, the arranged screw spindle 404 is used for driving the sliding sleeve assembly 6 to move, when the lower part of the fixing plate 601 is close to the second proximity switch 10, an air pump 15 is installed below the second guide rods 405, the air pump 15 is started, the drill bit 9 can blow away the chippings drilled by the plywood, when the lower end of the drill bit 9 is drilled through, the lower end of the drill bit 9 is contacted with the first proximity switch 5, the driving motor 306 does not rotate any more, lifting machinery component 3 no longer drives the sliding sleeve component and goes up and down, and at this moment, rotating electrical machines 403 continues to work, and rotating electrical machines 403 drives sliding sleeve component 6 and continues to descend, and slope precut 8 cuts the plywood in advance, and horizontal cutter 7 cuts the plywood, and it stops to reach the plywood until sliding sleeve component 6's lower surface.

For example, the bottom of the drill bit is formed with an enlarged bit end, and the inner end of the inclined pre-knife is aligned directly above the periphery of the enlarged bit end, so that the inclined pre-knife can completely cut through plywood.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a processing agency of plywood which characterized in that includes:

the device comprises a base (1) in a rectangular plate-shaped structure, wherein supporting legs (101) are connected to four corners below the base (1) in a threaded mode;

a workbench (2) fixedly arranged above the base (1);

the lifting mechanical assembly (3) is fixedly arranged on the upper surface of the base (1) and is positioned on one side of the workbench (2), and a supporting cross rod (301) is arranged on one side of the lifting mechanical assembly (3) through a bolt;

the cutting mechanism (4) is positioned right above the workbench (2), the supporting cross rod (301) drives the cutting mechanism (4) to lift, and the cutting mechanism (4) is mutually linked with the lifting mechanical assembly (3) through the supporting cross rod (301);

the workbench (2) comprises four groups of fixed blocks (201), the four groups of fixed blocks (201) comprise a first fixed block (2011), a second fixed block (2012), a third fixed block (2013) and a fourth fixed block (2014), supporting rods (202) are sequentially connected between the first fixed block (2011), the second fixed block (2012), the third fixed block (2013) and the fourth fixed block (2014), first guide rods (203) are fixedly connected between the first fixed block (2011) and the third fixed block (2013) and between the second fixed block (2012) and the fourth fixed block (2014), two sliding blocks (204) are slidably connected on each first guide rod (203), supporting plates (205) are fixedly connected on the four sliding blocks (204) together, a moving block (206) is fixedly connected in the center of the lower surface of the supporting plate (205) through bolts, and a U-shaped groove (207) is formed in one side of the moving block (206), a rack (208) is arranged at the inner bottom of the U-shaped groove (207), a guide hole (209) is formed in the middle of the supporting plate (205), guide grooves (2010) are arranged on the two sides of the support plate (205) positioned on the guide holes (209), a first proximity switch (5) is arranged at the inner bottom of the guide hole (209), a stepping motor (11) is fixedly arranged between the third fixed block (2013) and the fourth fixed block (2014), the output end of the stepping motor (11) is coaxially and fixedly connected with a gear disc (12), a belt wheel (13) is fixedly arranged on the supporting rod (202) between the first fixing block (2011) and the second fixing block (2012), a gear belt (14) is connected between the gear disc (12) and the belt wheel (13) in a transmission way, the middle part of the gear belt (14) passes through the U-shaped groove (207), one side of the gear belt (14) with teeth is meshed and connected with the rack (208);

the shape of the guide groove (2010) is V-shaped;

the lifting mechanical component (3) comprises a base (3011) fixedly mounted on the upper surface of a base (1), a U-shaped support frame (302) is fixedly connected to one side of the upper portion of the base (3011), bearing seats (303) are mounted at the upper end and the lower end of the U-shaped support frame (302), a lead screw (304) is connected between the two bearing seats (303), a first belt pulley (305) is arranged at the upper end of the lead screw (304), a driving motor (306) is fixedly mounted on the base (3011), the driving motor (306) is located on one side of the U-shaped support frame (302), a second belt pulley (307) is connected to the output end of the upper end of the driving motor (306), a belt (308) is connected between the second belt pulley (307) and the first belt pulley (305) in a transmission manner, a protective shell (309) is arranged on the outer side of the second belt pulley (307), and a nut is connected to the lead screw (304) through a thread, the supporting cross rod (301) is fixed on the nut;

the cutting mechanism (4) comprises a supporting seat (402) fixedly connected with one side of the nut through a supporting cross rod (301), a rotating motor (403) is fixedly mounted above the supporting seat (402), the output end of the lower end of the rotating motor (403) is in transmission connection with a screw spindle (404), the lower end of the screw spindle (404) penetrates through the supporting seat (402), the lower end of the supporting seat (402) is located on two sides of the screw spindle (404) and is fixedly connected with second guide rods (405), and the screw spindle (404) and the second guide rods (405) are connected with a sliding sleeve assembly (6) in a sliding mode;

the sliding sleeve assembly (6) comprises a fixing plate (601), a threaded hole (602) is formed in the middle of the fixing plate (601), round holes (603) are formed in the two sides, located in the threaded hole (602), of the fixing plate (601), the threaded hole (602) is in threaded connection with the screw spindle (404), the two round holes (603) are respectively in sliding insertion connection with the two second guide rods (405), and mounting grooves (604) are formed in the two sides of the fixing plate (601);

positioning holes (605) are formed in the fixing plate (601) and located on two sides of the mounting grooves (604), a horizontal cutter (7) is inserted into each mounting groove (604), and the positioning holes (605) and the horizontal cutters (7) are locked and fixed through bolts;

the lower ends of the two second guide rods (405) are fixedly connected with inclined precutting knives (8) through bolts, the two inclined precutting knives (8) are arranged in a V shape, the lower ends of the inclined precutting knives (8) incline towards the screw spindle (404), the inclined precutting knives (8) and the horizontal cutting knife (7) are positioned on the same vertical plane, and the V-shaped structures of the inclined precutting knives (8) are matched with the guide grooves (2010) on the lower supporting plate (205);

a drill bit (9) is fixedly mounted at the lower end of the screw spindle (404), a second proximity switch (10) is fixedly mounted below the screw spindle (404) and above the drill bit (9), and an air pump (15) is mounted below the second guide rod (405);

the lifting mechanical assembly is used for driving the cutting mechanism to move downwards, the rotating motor synchronously drives the screw spindle to rotate so as to drive the sliding sleeve assembly to descend and drive the drill bit to drill the plywood, the two inclined precuts synchronously precut two opposite sides of a drilled hole until the two inclined precuts move into the guide groove, when the lower end of the drill bit drills through the plywood, the device below the fixing plate is close to the second proximity switch, the air pump is started to blow away chips drilled by the plywood, and when the lower end of the drill bit is in contact with the first proximity switch, the first proximity switch is triggered to suspend the driving motor, the lifting mechanical component does not drive the cutting mechanism to lift any more, and the rotating electrical machines lasts work, and the rotating electrical machines drives the sliding sleeve subassembly and continues to descend, finally utilizes two horizontal cutting knives to cut the plywood, and the lower surface of sliding sleeve subassembly supports the plywood and stops.