Plywood pressing device and pressing method

Abstract

The invention discloses a plywood pressing device and method in the technical field of plywood machining, and the plywood pressing device comprises a rack, a pressing assembly, a residual glue cleaning assembly, an excessive glue scraping assembly and an excessive glue collecting assembly. The pressing assembly is started to drive the two pressing rollers to get close to each other from the two sides of the plywood and press the plywood, in the pressing process, overflowing glue on the two sides of the plywood is scraped through the overflowing glue scraping assembly, and the scraped overflowing glue is cleaned and collected through the overflowing glue collecting assembly; residual glue on the surface of the pressing roller is cleaned through the residual glue cleaning assembly, overflowing glue can be continuously cleaned and collected in the plywood pressing process, the residual glue on the surface of the pressing roller is cleaned after the plywood is pressed every time, and the residual glue is prevented from being left on the surface of the pressing roller; and the surface of the plywood is damaged in the subsequent pressing process.

Description

Technical Field

[0001] The present invention relates to the technical field of plywood processing, and in particular to a plywood pressing device and a pressing method. Background Art

[0002] Plywood is one of the commonly used materials for furniture and is one of the three major types of artificial boards. It can also be used as a building material for aircraft, ships, trains, cars, buildings, and packaging boxes, etc. A group of veneers is usually assembled and glued with the grain directions of adjacent layers perpendicular to each other. Usually, the surface veneer and the inner veneer are symmetrically arranged on both sides of the central layer or the board core. A board blank composed of veneers coated with glue and arranged longitudinally and horizontally in a crisscross pattern according to the grain direction is pressed under heated or unheated conditions. The number of layers is generally odd, and a few are even. The physical and mechanical properties in the longitudinal and transverse directions have relatively small differences. Commonly used types of plywood include three-ply board, five-ply board, etc. Plywood can improve the utilization rate of wood and is a major way to save wood.

[0003] When pressing plywood, in the existing plywood pressing device, most of them convey the plywood and then press it through a fixed-position pressing roller. However, during the pressing process, the glue overflowing from the plywood is easily attached to the pressing roller. It is inconvenient to clean the surface of the pressing roller during long-term operation. The residual glue remaining on the surface of the pressing roller is likely to produce glue marks on the surface of the plywood and may cause damage to the surface of the plywood in the subsequent pressing process. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above and / or problems existing in an existing plywood pressing device, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a plywood pressing device and a pressing method, which can continuously clean and collect the overflowing glue during the pressing process of plywood, and clean the residual glue on the surface of the pressing roller after each pressing of plywood, preventing the residual glue from remaining on the surface of the pressing roller and causing damage to the surface of the plywood in the subsequent pressing process.

[0007] To solve the above technical problems, according to one aspect of the present invention, the following technical solutions are provided: A plywood pressing device, which includes: A frame, a receiving cavity is provided on the side wall of the frame, and rectangular guiding grooves are provided on the symmetrical side walls of the frame; The pressing assembly comprises two fixed plates symmetrically mounted on the top of the frame, two mobile racks symmetrically slidably connected to the inside of the accommodating cavity, and two lifting racks slidably connected to the inside of the two mobile racks, the side wall of the fixed plate is equipped with a motor, the motor is connected to the two mobile racks and drives the two mobile racks to move relative to each other, the symmetrical side walls of the mobile racks are provided with a first guide groove, a pressing roller is rotatably connected to the inside of the lifting rack, shaft rods are mounted at both ends of the pressing roller, the shaft rods penetrate the first guide groove and extend into the inside of the rectangular guide groove, when the two mobile racks approach each other, the two shaft rods are located below the rectangular guide groove, and when the two mobile racks move away from each other, the two shaft rods are located above the rectangular guide groove; A residual glue cleaning component is installed on the top of the moving frame. When the two moving frames move away from each other, the residual glue cleaning component is connected to the pressure roller. The two moving frames move away from each other and drive the residual glue cleaning component to clean the residual glue on the surface of the pressure roller. The overflow glue scraping assembly comprises a fixed frame installed at the bottom of the movable frame and two scrapers symmetrically located inside the fixed frame, wherein the scrapers are connected to the lifting frame, and when the lifting frame moves downward, the two scrapers are driven to move closer to each other, and when the lifting frame moves upward, the two scrapers are driven to move away from each other; The overflow glue collecting assembly is installed on the side wall of the fixed frame. When the two movable frames are close to each other, the overflow glue collecting assembly is connected to the pressure roller and is driven by the pressure roller to collect the overflowed glue.

[0008] As a preferred solution of the plywood pressing device described in the present invention, a motor is installed on the side wall of one of the fixed plates, the output end of the motor extends between the two fixed plates and is installed with a first positive and negative threaded rod, two second guide grooves are symmetrically arranged on the top of the frame, a fixed block is installed on the top of the movable frame, the two fixed blocks respectively penetrate and extend through the two second guide grooves, a first threaded hole is opened on the side wall of the fixed block, the first positive and negative threaded rod rotates and penetrates through the first threaded hole, and a first gear is installed on the other end of the shaft rod.

[0009] As a preferred solution of the plywood pressing device described in the present invention, a slot is provided on the top of the lifting frame; The residual glue cleaning assembly includes a slider slidably located at the inner top of the moving frame, a first reciprocating threaded rod rotatably connected inside the moving frame, and a third gear rotatably connected to the side wall of the moving frame. A first pulley is rotatably connected to the side wall of the moving frame, and the first pulley is coaxially and fixedly connected to the first reciprocating threaded rod. A second pulley is installed on the side wall of the third gear, and the first pulley and the second pulley are connected by a belt. When the shaft rod is located above the rectangular guiding groove, the bottom of the slider penetrates through the slotted opening and extends into the lifting frame.

[0010] As a preferred solution of a plywood pressing device according to the present invention, a fourth guiding groove is formed at the inner top of the moving frame, and a second rack is installed inside the fourth guiding groove; A first reciprocating threaded hole is formed in the side wall of the slider, the first reciprocating threaded rod rotatably penetrates through the first reciprocating threaded hole, a grinding wheel is rotatably connected to the bottom of the slider, a second gear is rotatably connected to the top of the slider, the second gear is coaxially and fixedly connected to the grinding wheel, and the second gear is located inside the fourth guiding groove and meshes with the second rack.

[0011] As a preferred solution of a plywood pressing device according to the present invention, support feet are installed at the bottom of the frame, and a rack is installed on the side wall of the frame. When the two moving frames move away from each other, the part of the shaft rod located above the rectangular guiding groove, and the first gear on one side meshes with the rack.

[0012] As a preferred solution of a plywood pressing device according to the present invention, two third guiding grooves are symmetrically formed at the inner bottom of the accommodating cavity, a second left - right threaded rod is rotatably connected inside the fixed frame, a third pulley is installed on the rod body of the second left - right threaded rod, a fourth gear is rotatably connected inside the moving frame, a third rack is installed on the side wall of the lifting frame, the third rack meshes with the fourth gear, a fourth pulley is installed on the side wall of the fourth gear, the fourth pulley and the third pulley are connected by a belt, the bottom of the scraping plate extends out of the third guiding groove and is installed with an ear plate, a second threaded hole is formed in the side wall of the ear plate, the second left - right threaded rod rotatably penetrates through the second threaded hole, an L - shaped scraping piece is installed on the side wall of the scraping plate, and a glue outlet hole is formed in the side wall of the scraping plate.

[0013] As a preferred solution of a plywood pressing device according to the present invention, wherein, the glue overflow collecting assembly includes a collecting pipe installed on the side wall of the fixed frame and a piston located inside the collecting pipe. A first hose is installed on the side wall of the collecting pipe, the other end of the first hose is connected to the glue outlet hole, a first one-way valve is installed on the body of the first hose, a second hose is installed on the other side wall of the collecting pipe, and a second one-way valve is installed on the body of the second hose.

[0014] As a preferred solution of a plywood pressing device according to the present invention, wherein, a fifth gear is rotatably connected to the side wall of the fixed frame, a first helical gear is installed on the side wall of the fifth gear, a second fixed plate is installed on the side wall of the fixed frame, a second helical gear is rotatably connected to the top of the second fixed plate, the second helical gear meshes with the first helical gear, a second reciprocating threaded rod is rotatably connected to the bottom of the second fixed plate, the second helical gear is coaxially and fixedly connected to the second reciprocating threaded rod, a fixed rod is installed on the top of the piston, a second reciprocating threaded hole is opened at the top end of the fixed rod, and the second reciprocating threaded rod rotates and extends into the second reciprocating threaded hole.

[0015] The present invention also provides a pressing method for a plywood pressing device. The using method adopts the above plywood pressing device and includes the following steps: S1. Send the plywood coated with glue into the accommodating cavity, start the motor to drive the first positive and negative threaded rod to rotate, use the screw rod structure to push the two moving frames away from each other, the two lifting frames move downward along the rectangular guide groove to a position below the rectangular guide groove, the bottom of the pressing roller abuts against the top of the plywood, at the same time the third rack drives the fourth gear to rotate, and then drives the second positive and negative threaded rod to rotate, the two scraping plates approach each other, the L-shaped scraping blade clings to both sides of the plywood, and the first gear meshes with the fifth gear; S2. When the two moving frames approach each other, drive the two pressing rollers to move along the top of the plywood and press the plywood, at the same time the lifting frame drives the L-shaped scraping blade to move along both sides of the plywood to scrape off the glue overflowing during pressing; S3. When the pressing roller moves and rotates along the top of the plywood, the first gear drives the fifth gear to rotate, and then drives the second reciprocating threaded rod to rotate, pushing the fixed rod and the piston to reciprocate inside the collecting pipe, and sucking and collecting the glue scraped off by the L-shaped scraping blade through the glue outlet hole; S4. When the two moving frames move away from each other to the in-place position, the two lifting frames slide along the rectangular guide groove to the position above the rectangular guide groove. The upward movement of the lifting frames drives the two scraping plates to move away from each other and separate from the plywood. The slider penetrates through the slotted opening, and the grinding wheel abuts against the top of the pressure roller. One of the first gears meshes with the third gear, and the other first gear meshes with the rack. Take out and replace the plywood. As the two moving frames move away from each other, the rack drives the pressure roller to rotate, drives the third gear and the first reciprocating threaded rod to rotate, and pushes the slider to slide inside the slotted opening. When the slider moves, the second rack drives the second gear and the grinding wheel to rotate, and grinds and cleans the surface of the pressure roller, and wipes off the residual glue on the surface of the pressure roller.

[0016] Compared with the prior art: By arranging a pressing assembly inside the frame, a residual glue cleaning assembly inside the pressing assembly, an overflow glue scraping assembly at the bottom of the pressing assembly, and an overflow glue collecting assembly on the side wall of the pressing assembly. When in use, place the plywood at the bottom of the pressing assembly, start the pressing assembly to drive the two pressure rollers to approach each other from both sides of the plywood and press the plywood. During the pressing process, the overflow glue scraping assembly scrapes the overflow glue on both sides of the plywood, and the overflow glue collecting assembly cleans and collects the scraped overflow glue. When the pressing is completed, the residual glue cleaning assembly cleans the residual glue on the surface of the pressure roller, which can continuously clean and collect the overflowing glue during the pressing process of the plywood, and clean the residual glue on the surface of the pressure roller after each pressing of the plywood, preventing the residual glue from remaining on the surface of the pressure roller and causing damage to the surface of the plywood during the subsequent pressing process. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them: Figure 1 It is the overall structure diagram of a plywood pressing device of the present invention; Figure 2 It is the internal structure diagram of the frame of a plywood pressing device of the present invention; Figure 3 It is the structure diagram of the pressing assembly of a plywood pressing device of the present invention; Figure 4 It is the structure diagram of the lifting frame of a plywood pressing device of the present invention; Figure 5 It is the structure diagram of the moving frame of a plywood pressing device of the present invention; Figure 6 A structural diagram of the plywood pressing device of the present invention Figure 5 at position A in the figure; Figure 7 A structural diagram of the scraper of the plywood pressing device of the present invention; Figure 8 A structural diagram of the glue overflow collection assembly of the plywood pressing device of the present invention; Figure 9 A side view structural diagram of the frame of the plywood pressing device of the present invention. Specific embodiments

[0018] To make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0020] To make the purpose, technical solution, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] The present invention provides a plywood pressing device and a pressing method, which can continuously clean and collect the overflowing glue during the pressing process of the plywood, and clean the residual glue on the surface of the pressing roller after each pressing of the plywood, preventing the residual glue from remaining on the surface of the pressing roller and damaging the surface of the plywood during the subsequent pressing process. Embodiment 1

[0022] Figures 1-3 The following shows a structural schematic diagram of the first embodiment of a plywood pressing device of the present invention. Please refer to Figures 1-3 , a plywood pressing device of this embodiment includes a frame 100, a pressing assembly 200, a residual glue cleaning assembly 300, a glue overflow scraping assembly 400, and a glue overflow collection assembly 500.

[0023] A receiving cavity 110 is opened on the side wall of the frame 100, and rectangular guiding grooves 110a are opened on the symmetric side walls of the frame 100.

[0024] The laminating assembly 200 includes two fixed plates 210 symmetrically installed on the top of the frame 100, two moving frames 220 symmetrically and slidably connected inside the accommodating cavity 110, and two lifting frames 230 respectively and slidably connected inside the two moving frames 220. A motor 210a is installed on the side wall of the fixed plate 210. The motor 210a is connected to the two moving frames 220 and drives the two moving frames 220 to move relatively. First guiding grooves 220c are formed on the symmetrical side walls of the moving frames 220. A pressing roller 230a is rotatably connected inside the lifting frame 230. Shaft rods 230a-1 are installed at both ends of the pressing roller 230a. The shaft rods 230a-1 penetrate through the first guiding grooves 220c and extend into the rectangular guiding groove 110a. When the two moving frames 220 approach each other, the two shaft rods 230a-1 are located below the rectangular guiding groove 110a. When the two moving frames 220 move away from each other, the two shaft rods 230a-1 are located above the rectangular guiding groove 110a. When the motor 210a drives the two moving frames 220 to move away from each other, the two moving frames 220 drive the two lifting frames 230 to move away from each other, and the shaft rods 230a-1 slide along the upper section of the rectangular guiding groove 110a until the two moving frames 220 are fully separated. Then the shaft rods 230a-1 slide along the rectangular guiding groove 110a to the lower section of the rectangular guiding groove 110a. On the contrary, when the two moving frames 220 approach each other, the two moving frames 220 drive the two lifting frames 230 to approach each other, and the shaft rods 230a-1 slide along the lower section of the rectangular guiding groove 110a until the two moving frames 220 are fully closed. Then the shaft rods 230a-1 slide along the rectangular guiding groove 110a to the upper section of the rectangular guiding groove 110a.

[0025] The residual glue cleaning assembly 300 is installed on the inner top of the moving frame 220. When the two moving frames 220 move away from each other, the residual glue cleaning assembly 300 is connected to the pressing roller 230a. The two moving frames 220 moving away from each other drive the residual glue cleaning assembly 300 to clean the residual glue and the like on the surface of the pressing roller 230a. When the two shaft rods 230a-1 slide along the rectangular guiding groove 110a to the upper section of the rectangular guiding groove 110a, the pressing roller 230a is connected to the residual glue cleaning assembly 300. And as the two moving frames 220 drive the two lifting frames 230 and the pressing roller 230a to move away from each other, the pressing roller 230a drives the residual glue cleaning assembly 300 to polish and clean the residual glue on the surface of the pressing roller 230a.

[0026] The glue overflow scraping assembly 400 includes a fixed frame 410 installed at the bottom of the moving frame 220 and two scraping plates 420 symmetrically located inside the fixed frame 410. The scraping plates 420 are connected to the lifting frame 230. When the lifting frame 230 moves downward, it drives the two scraping plates 420 to approach each other. When the lifting frame 230 moves upward, it drives the two scraping plates 420 to move away from each other. When the shaft rod 230a-1 slides downward along the rectangular guiding groove 110a to the lower section of the rectangular guiding groove 110a, the lifting frame 230 slides downward and drives the two scraping plates 420 to approach and closely adhere to both sides of the plywood. As the moving frame 220 moves, it drives the fixed frame 410 and the scraping plates 420 to move. The scraping plates 420 clean the glue overflow generated when pressing both sides of the plywood.

[0027] The glue overflow collecting assembly 500 is installed on the side wall of the fixed frame 410. When the two moving frames 220 approach each other, the glue overflow collecting assembly 500 is connected to the pressing roller 230a and is driven by the pressing roller 230a to collect the overflowing glue.

[0028] Combined Figures 1-3 In this way, for a plywood pressing device according to this embodiment, when in use, the plywood is pushed into the accommodating cavity 110 and located below the pressing roller 230a. The motor 210a is started to drive the two moving frames 220 to move away from each other until in place. The shaft rod 230a-1 slides to the lower position of the rectangular guiding groove 110a. At this time, the bottom of the pressing roller 230a abuts against the top of the plywood, and the side walls of the scraping plates 420 closely adhere to both sides of the plywood. At the same time, the pressing roller 230a is connected to the glue overflow collecting assembly 500. The motor 210a is started to drive the two moving frames 220 to approach each other. The two moving frames 220 drive the two lifting frames 230 to approach each other. The pressing roller 230a slides along the top of the plywood and presses the plywood. During the movement of the moving frame 220, it drives the scraping plates 420 to move along both sides of the plywood, scrapes off the glue overflow on both sides of the plywood, and drives the glue overflow collecting assembly 500 to clean and collect the scraped glue overflow until the two moving frames 220 approach each other in place. The shaft rod 230a-1 slides to the upper position of the rectangular guiding groove 110a. The pressing roller 230a is connected to the residual glue cleaning assembly 300 upward. At this time, the plywood is taken out and replaced. When the motor 210a is started to drive the two fixing blocks 220a to move away from each other, the residual glue cleaning assembly 300 can clean the residual glue on the surface of the pressing roller 230a. Embodiment 2

[0029] Figures 1-9 The following shows a schematic structural diagram of the second embodiment of a plywood pressing device according to the present invention. Please refer to Figures 1-9 Differing from the above embodiment, a plywood pressing device according to this embodiment further includes: One of the side walls of the fixed plate 210 is provided with a motor 210a. The output end of the motor 210a extends between the two fixed plates 210 and is provided with a first forward and reverse threaded rod 210a-1. Two second guide grooves 110b are symmetrically formed at the top of the frame 100. A fixed block 220a is installed at the top of the moving frame 220. The two fixed blocks 220a respectively penetrate and extend out of the two second guide grooves 110b. A first threaded hole 220a-1 is formed in the side wall of the fixed block 220a. The first forward and reverse threaded rod 210a-1 rotatably penetrates through the first threaded hole 220a-1. The other end of the shaft rod 230a-1 is provided with a first gear 230a-2. When the motor 210a is started to drive the first forward and reverse threaded rod 210a-1 to rotate, the first forward and reverse threaded rod 210a-1 uses the screw rod structure to push the two fixed blocks 220a to drive the two moving frames 220 to move away from each other. The shaft rod 230a-1 slides along the upper section of the rectangular guide groove 110a until the two moving frames 220 move away in place. Then the shaft rod 230a-1 slides down along the rectangular guide groove 110a to the lower section of the rectangular guide groove 110a. By starting the motor 210a to drive the first forward and reverse threaded rod 210a-1 to reverse, the screw rod structure is used to push the two moving frames 220 to drive the two moving frames 220 to move closer to each other. The shaft rod 230a-1 slides along the lower section of the rectangular guide groove 110a until the two moving frames 220 move closer in place. Then the shaft rod 230a-1 slides up along the rectangular guide groove 110a to the upper section of the rectangular guide groove 110a.

[0030] A slot 230b is provided at the top of the lifting frame 230. The residual glue cleaning assembly 300 includes a slider 310 slidably located at the top inside the moving frame 220, a first reciprocating threaded rod 320 rotatably connected inside the moving frame 220, and a third gear 330 rotatably connected to the side wall of the moving frame 220. A first pulley 320a is rotatably connected to the side wall of the moving frame 220, and the first pulley 320a is coaxially and fixedly connected to the first reciprocating threaded rod 320. A second pulley 330a is installed on the side wall of the third gear 330, and the first pulley 320a and the second pulley 330a are connected by a belt. When the shaft rod 230a-1 is located above the rectangular guiding groove 110a, the bottom of the slider 310 penetrates through the slot 230b and extends into the lifting frame 230. A fourth guiding groove 220b is provided at the top inside the moving frame 220, and a second rack 220b-1 is installed inside the fourth guiding groove 220b. A first reciprocating threaded hole 310a is provided on the side wall of the slider 310, and the first reciprocating threaded rod 320 rotatably penetrates through the first reciprocating threaded hole 310a. A grinding wheel 310b is rotatably connected to the bottom of the slider 310, and a second gear 310c is rotatably connected to the top of the slider 310. The second gear 310c is coaxially and fixedly connected to the grinding wheel 310b. The second gear 310c is located inside the fourth guiding groove 220b and meshes with the second rack 220b-1. Support feet 120 are installed at the bottom of the frame 100, and a rack 130 is installed on the side wall of the frame 100. When the two moving frames 220 move away from each other, the shaft rod 230a-1 is located above the rectangular guiding groove 110a, and the first gear 230a-2 on one side meshes with the rack 130. When the shaft rod 230a-1 slides along the rectangular guiding groove 110a to the upper section of the rectangular guiding groove 110a, the first gear 230a-2 on one side meshes with the third gear 330, and the first gear 230a-2 on the other side meshes with the rack 130. At this time, the slider 310 penetrates through the slot 230b and extends into the lifting frame 230, and the grinding wheel 310b fits against the bottom of the pressure roller 230a. As the two moving frames 220 drive the two lifting frames 230 to move away from each other, the rack 130 drives the first gear 230a-2 on one side to rotate, and then drives the pressure roller 230a and the first gear 230a-2 on the other side to rotate. The first gear 230a-2 on the other side drives the third gear 330 and the second pulley 330a to rotate. When the second pulley 330a rotates, it drives the first pulley 320a and the first reciprocating threaded rod 320 to rotate by means of the belt. When the first reciprocating threaded rod 320 rotates, it pushes the slider 310 to reciprocate along the slot 230b. When the slider 310 moves, the second rack 220b-1 drives the second gear 310c and the grinding wheel 310b to rotate. When the grinding wheel 310b rotates, it grinds and cleans the residual glue on the surface of the pressure roller 230a.

[0031] Two third guiding grooves 110c are symmetrically formed at the inner bottom of the accommodating cavity 110. A second left - right threaded screw rod 410a is rotatably connected inside the fixing frame 410. A third pulley 410a - 1 is installed on the rod body of the second left - right threaded screw rod 410a. A fourth gear 430 is rotatably connected inside the moving frame 220. A third rack 230c is installed on the side wall of the lifting frame 230. The third rack 230c meshes with the fourth gear 430. A fourth pulley 430a is installed on the side wall of the fourth gear 430. The fourth pulley 430a is connected to the third pulley 410a - 1 by a belt. The bottom of the scraper 420 extends out of the third guiding groove 110c and is provided with an ear plate 420b. A second threaded hole 420b - 1 is formed in the side wall of the ear plate 420b. The second left - right threaded screw rod 410a rotatably penetrates through the second threaded hole 420b - 1. An L - shaped scraping blade 420a is installed on the side wall of the scraper 420. A glue outlet hole 420a - 1 is formed in the side wall of the scraper 420. When the shaft rod 230a - 1 slides downward along the rectangular guiding groove 110a to the lower section of the rectangular guiding groove 110a, the lifting frame 230 drives the third rack 230c to slide downward. The third rack 230c drives the fourth gear 430 and the fourth pulley 430a to rotate. The fourth pulley 430a drives the third pulley 410a - 1 and the second left - right threaded screw rod 410a to rotate by means of a belt. When the second left - right threaded screw rod 410a rotates, it uses the screw rod structure to push the two ear plates 420b to drive the two scrapers 420 to approach each other, so that the two L - shaped scraping blades 420a are close to both sides of the plywood. At this time, as the two moving frames 220 approach each other, they drive the two fixing frames 410 to approach each other. The fixing frame 410 drives the scraper 420 and the L - shaped scraping blade 420a to move. When the L - shaped scraping blade 420a moves, it scrapes off the overflow glue generated when both sides of the plywood are pressed together. When the shaft rod 230a - 1 slides upward along the rectangular guiding groove 110a to the upper section of the rectangular guiding groove 110a, the lifting frame 230 drives the third rack 230c to slide upward. The third rack 230c drives the fourth gear 430 and the fourth pulley 430a to rotate in reverse, and then drives the second left - right threaded screw rod 410a to rotate in reverse. Using the screw rod structure to push the two ear plates 420b to drive the two scrapers 420 to move away from each other, so that the two scrapers 420 and the L - shaped scraping blades 420a are separated from both sides of the plywood.

[0032] The overflow glue collection assembly 500 includes a collection pipe 510 installed on the side wall of the fixed frame 410 and a piston 520 located inside the collection pipe 510. A first hose 510a is installed on the side wall of the collection pipe 510. The other end of the first hose 510a is connected to the glue outlet hole 420a-1. A first one-way valve 510a-1 is installed on the body of the first hose 510a. A second hose 510b is installed on the other side wall of the collection pipe 510. A second one-way valve 510b-1 is installed on the body of the second hose 510b. A fifth gear 530 is rotatably connected to the side wall of the fixed frame 410. A first helical gear 530a is installed on the side wall of the fifth gear 530. A second fixed plate 540 is installed on the side wall of the fixed frame 410. A second helical gear 540a is rotatably connected to the top of the second fixed plate 540. The second helical gear 540a meshes with the first helical gear 530a. A second reciprocating threaded rod 540b is rotatably connected to the bottom of the second fixed plate 540. The second helical gear 540a is coaxially and fixedly connected to the second reciprocating threaded rod 540b. A fixed rod 520a is installed on the top of the piston 520. A second reciprocating threaded hole 520a-1 is opened at the top end of the fixed rod 520a. The second reciprocating threaded rod 540b rotates and extends into the second reciprocating threaded hole 520a-1. What is not shown in the figure is that the other end of the second hose 510b is connected to an external collection device. When the shaft rod 230a-1 slides downward along the rectangular guide groove 110a to the lower section of the rectangular guide groove 110a, at this time, the first gear 230a-2 meshes with the fifth gear 530. As the moving frame 220 drives the pressure roller 230a to move along the surface of the plywood to press the plywood, when the pressure roller 230a moves, it rotates the pressure roller 230a through friction. The pressure roller 230a drives the first gear 230a-2 to rotate. The first gear 230a-2 drives the fifth gear 530 and the first helical gear 530a to rotate. The first helical gear 530a drives the second helical gear 540a and the second reciprocating threaded rod 540b to rotate. When the second reciprocating threaded rod 540b rotates, it uses the screw structure to push the fixed rod 520a and the piston 520 to reciprocate up and down inside the collection pipe 510. When the piston 520 moves upward inside the collection pipe 510, at this time, the first one-way valve 510a-1 opens and the second one-way valve 510b-1 closes. At this time, the first hose 510a sucks the overflow glue scraped off by the L-shaped blade 420a into the collection pipe 510 through the glue outlet hole 420a-1. When the piston 520 moves downward inside the collection pipe 510, at this time, the first one-way valve 510a-1 closes and the second one-way valve 510b-1 opens. At this time, the overflow glue inside the collection pipe 510 is transported to the external collection device through the second hose 510b, so that the overflow glue can be cleaned and collected when the plywood is pressed.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in the present invention can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A plywood pressing device, characterized in that, Including: A frame (100), a receiving cavity (110) is formed on the side wall of the frame (100), and rectangular guide grooves (110a) are formed on the symmetric side walls of the frame (100); A pressing assembly (200), including two fixed plates (210) symmetrically installed on the top of the frame (100), two moving frames (220) symmetrically and slidably connected inside the receiving cavity (110), and two lifting frames (230) respectively slidably connected inside the two moving frames (220). A motor (210a) is installed on the side wall of the fixed plate (210). The motor (210a) is connected to the two moving frames (220) and drives the two moving frames (220) to move relatively. First guide grooves (220c) are formed on the symmetric side walls of the moving frame (220). A pressing roller (230a) is rotatably connected inside the lifting frame (230). Shaft rods (230a-1) are installed at both ends of the pressing roller (230a). The shaft rods (230a-1) penetrate through the first guide grooves (220c) and extend into the rectangular guide grooves (110a). When the two moving frames (220) approach each other, the two shaft rods (230a-1) are located below the rectangular guide grooves (110a). When the two moving frames (220) move away from each other, the two shaft rods (230a-1) are located above the rectangular guide grooves (110a); A residual glue cleaning assembly (300) is installed on the inner top of the moving frame (220). When the two moving frames (220) move away from each other, the residual glue cleaning assembly (300) is connected to the pressing roller (230a). The two moving frames (220) moving away from each other drive the residual glue cleaning assembly (300) to clean the residual glue and the like on the surface of the pressing roller (230a); An overflow glue scraping assembly (400), including a fixed frame (410) installed at the bottom of the moving frame (220) and two scraping plates (420) symmetrically located inside the fixed frame (410). The scraping plates (420) are connected to the lifting frame (230). When the lifting frame (230) moves downward, it drives the two scraping plates (420) to approach each other. When the lifting frame (230) moves upward, it drives the two scraping plates (420) to move away from each other; An overflow glue collecting assembly (500) is installed on the side wall of the fixed frame (410). When the two moving frames (220) approach each other, the overflow glue collecting assembly (500) is connected to the pressing roller (230a) and is driven by the pressing roller (230a) to collect the overflowing glue.

2. The plywood pressing device according to claim 1, characterized in that, A motor (210a) is installed on the side wall of one of the fixed plates (210). The output end of the motor (210a) extends between the two fixed plates (210) and is provided with a first left - right threaded rod (210a - 1). Two second guide grooves (110b) are symmetrically formed at the top of the frame (100). A fixed block (220a) is installed at the top of the moving frame (220). The two fixed blocks (220a) respectively penetrate and extend out of the two second guide grooves (110b). A first threaded hole (220a - 1) is formed on the side wall of the fixed block (220a). The first left - right threaded rod (210a - 1) rotatably penetrates through the first threaded hole (220a - 1). The other end of the shaft rod (230a - 1) is installed with a first gear (230a - 2).

3. A plywood pressing device according to claim 1, characterized in that, A slot (230b) is formed at the top of the lifting frame (230); The residual glue cleaning assembly (300) includes a slider (310) slidably located at the inner top of the moving frame (220), a first reciprocating threaded rod (320) rotatably connected inside the moving frame (220), and a third gear (330) rotatably connected to the side wall of the moving frame (220). A first pulley (320a) is rotatably connected to the side wall of the moving frame (220). The first pulley (320a) is coaxially and fixedly connected to the first reciprocating threaded rod (320). A second pulley (330a) is installed on the side wall of the third gear (330). The first pulley (320a) and the second pulley (330a) are connected by a belt. When the shaft rod (230a - 1) is located above the rectangular guide groove (110a), the bottom of the slider (310) penetrates through the slot (230b) and extends into the lifting frame (230).

4. A plywood pressing device according to claim 3, characterized in that, A fourth guide groove (220b) is formed at the inner top of the moving frame (220), and a second rack (220b - 1) is installed inside the fourth guide groove (220b); A first reciprocating threaded hole (310a) is formed on the side wall of the slider (310). The first reciprocating threaded rod (320) rotatably penetrates through the first reciprocating threaded hole (310a). A grinding wheel (310b) is rotatably connected to the bottom of the slider (310). A second gear (310c) is rotatably connected to the top of the slider (310). The second gear (310c) is coaxially and fixedly connected to the grinding wheel (310b). The second gear (310c) is located inside the fourth guide groove (220b) and meshes with the second rack (220b - 1).

5. A plywood pressing device according to claim 2, characterized in that, Support feet (120) are installed at the bottom of the frame (100), and a rack (130) is installed on the side wall of the frame (100). When the two moving frames (220) move away from each other, the part of the shaft rod (230a - 1) located above the rectangular guide groove (110a), and the first gear (230a - 2) on one side meshes with the rack (130).

6. The plywood pressing device according to claim 1, characterized in that, Two third guiding grooves (110c) are symmetrically formed at the inner bottom of the accommodation cavity (110). A second left - right threaded screw rod (410a) is rotatably connected inside the fixing frame (410). A third pulley (410a - 1) is installed on the rod body of the second left - right threaded screw rod (410a). A fourth gear (430) is rotatably connected inside the moving frame (220). A third rack (230c) is installed on the side wall of the lifting frame (230). The third rack (230c) meshes with the fourth gear (430). A fourth pulley (430a) is installed on the side wall of the fourth gear (430). The fourth pulley (430a) is connected to the third pulley (410a - 1) by a belt. The bottom of the scraping plate (420) extends out of the third guiding groove (110c) and an ear plate (420b) is installed. A second threaded hole (420b - 1) is formed on the side wall of the ear plate (420b). The second left - right threaded screw rod (410a) rotatably penetrates through the second threaded hole (420b - 1). An L - shaped scraping blade (420a) is installed on the side wall of the scraping plate (420). A glue outlet hole (420a - 1) is formed on the side wall of the scraping plate (420).

7. A plywood pressing device according to claim 6, characterized in that, The overflow glue collecting assembly (500) includes a collecting pipe (510) installed on the side wall of the fixing frame (410) and a piston (520) located inside the collecting pipe (510). A first hose (510a) is installed on the side wall of the collecting pipe (510). The other end of the first hose (510a) is connected to the glue outlet hole (420a - 1). A first one - way valve (510a - 1) is installed on the pipe body of the first hose (510a). A second hose (510b) is installed on the other side wall of the collecting pipe (510). A second one - way valve (510b - 1) is installed on the pipe body of the second hose (510b).

8. A plywood pressing device according to claim 7, characterized in that, A fifth gear (530) is rotatably connected to the side wall of the fixing frame (410). A first helical gear (530a) is installed on the side wall of the fifth gear (530). A second fixing plate (540) is installed on the side wall of the fixing frame (410). A second helical gear (540a) is rotatably connected to the top of the second fixing plate (540). The second helical gear (540a) meshes with the first helical gear (530a). A second reciprocating threaded screw rod (540b) is rotatably connected to the bottom of the second fixing plate (540). The second helical gear (540a) is coaxially and fixedly connected to the second reciprocating threaded screw rod (540b). A fixing rod (520a) is installed on the top of the piston (520). A second reciprocating threaded hole (520a - 1) is formed at the top end of the fixing rod (520a). The second reciprocating threaded screw rod (540b) rotatably extends into the second reciprocating threaded hole (520a - 1).

9. A pressing method of a plywood pressing device, implemented by a plywood pressing device according to claim 1, characterized in that, The steps are as follows: S1. Feed the glued plywood into the interior of the accommodating cavity (110), start the motor (210a) to drive the first left - right threaded rod (210a - 1) to rotate, and use the screw rod structure to push the two moving frames (220) away from each other. The two lifting frames (230) move downward along the rectangular guide groove (110a) to a position below the rectangular guide groove (110a). The bottom of the pressure roller (230a) abuts against the top of the plywood. At the same time, the third rack (230c) drives the fourth gear (430) to rotate, and then drives the second left - right threaded rod (410a) to rotate. The two scrapers (420) move closer to each other, and the L - shaped scraping blade (420a) clings to both sides of the plywood. The first gear (230a - 2) meshes with the fifth gear (530). S2. When the two moving frames (220) move closer to each other, they drive the two pressure rollers (230a) to move along the top of the plywood and press the plywood. At the same time, the lifting frame (230) drives the L - shaped scraping blade (420a) to move along both sides of the plywood to scrape off the glue overflowing during pressing. S3. When the pressure roller (230a) moves and rotates along the top of the plywood, the first gear (230a - 2) drives the fifth gear (530) to rotate, and then drives the second reciprocating threaded rod (540b) to rotate, pushing the fixed rod (520a) and the piston (520) to reciprocate inside the collecting pipe (510), sucking and collecting the glue scraped off by the L - shaped scraping blade (420a) through the glue outlet hole (420a - 1). S4. When the two moving frames (220) move away from each other in place, the two lifting frames (230) slide along the rectangular guide groove (110a) to a position above the rectangular guide groove (110a). The lifting frame (230) moves upward to drive the two scrapers (420) to move away from each other and separate from the plywood. The slider (310) passes through the slot (230b), and the grinding wheel (310b) abuts against the top of the pressure roller (230a). The first gear (230a - 2) on one side meshes with the third gear (330), and the first gear (230a - 2) on the other side meshes with the rack (130). Take out and replace the plywood. As the two moving frames (220) move away from each other, the rack (130) drives the pressure roller (230a) to rotate, and drives the third gear (330) and the first reciprocating threaded rod (320) to rotate, pushing the slider (310) to slide inside the slot (230b). When the slider (310) moves, the second rack (220b - 1) drives the second gear (310c) and the grinding wheel (310b) to rotate, grinding and cleaning the surface of the pressure roller (230a) and wiping off the residual glue on the surface of the pressure roller (230a).

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