Environment-friendly hot pressing device for plywood assembly and plywood cylinder structure

Abstract

The present application relates to the technical field of plywood assembly, and specifically discloses an environmentally-friendly plywood assembly hot-pressing device and plywood cylinder structure. The existing device extrudes the plywood through a fixed mold, which causes the plywood to be easily indented at some positions due to the large pressure. The device comprises a frame, the frame is fixedly connected with a support plate, the lower part of the frame is fixedly connected with two groups of first hydraulic push rods that are symmetrically distributed, each group comprises first hydraulic push rods that are uniformly distributed, the first hydraulic push rods are fixedly connected with a fixing frame at the telescopic end, the upper side of the fixing plate is fixedly connected with a lower mold, the fixing frame is slidingly connected with a sliding frame, the sliding frames in the same group are fixedly connected with a fixed shaft, and the fixed shaft is fixedly connected with an extrusion roller outside. The extrusion roller and the components thereon move along a fixed path to extrude the plywood, ensuring the continuity and uniformity of the force received by each part of the plywood and reducing the indentation of the plywood caused by uneven force.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plywood assembly, and discloses an environmentally-friendly plywood assembly hot-pressing device and a plywood cylinder structure. BACKGROUND

[0002] Plywood assembly refers to the use of a hot-pressing device to form a complete plywood from a plurality of originally flat plywood substrates through steps such as heating, humidifying, glueing and pressing, and to gradually hot-press the plywood into a cylindrical shape (or an arc shape). Because the hot-pressing process is one-piece forming, the surface of the cylindrical plywood after assembly is smooth and beautiful, and has good economic benefits and development prospects. The existing hot-pressing device usually directly extrudes the heated and humidified plywood through a plurality of molds less than 180° in sequence to extrude the plywood substrates into a circular shape. However, when the mold is used to directly extrude the plywood substrates, the two ends of the mold will first come into contact with the plywood substrates, which will cause the pressure on the contact parts of the plywood substrates to be greater than the pressure on the parts not extruded by the mold during the extrusion process. Because the heated and humidified plywood has high plasticity, the pressure on part of the plywood substrates is too large during the extrusion of the mold, which causes indentation of the plywood at the part, and thus affects the smoothness of the surface of the formed plywood, and makes the formed plywood cylinder not beautiful enough. SUMMARY

[0003] In order to overcome the shortcomings of the existing device that uses a fixed mold to extrude the plywood, causing the pressure on part of the plywood to be too large and easy to cause indentation, the present application provides an environmentally-friendly plywood assembly hot-pressing device and a plywood cylinder structure.

[0004] The technical implementation scheme of the present application is as follows: an environmentally-friendly plywood assembly hot-pressing device, comprising a rack, the rack is fixedly connected with a support plate, the support plate is provided with an electric rotating shaft, the outer side of the electric rotating shaft is fixedly connected with a fixed roller, the lower part of the rack is fixedly connected with two groups of first hydraulic push rods which are symmetrically distributed, each group comprises first hydraulic push rods which are uniformly distributed, the extension ends of all the first hydraulic push rods are jointly and slidably connected with a fixed plate, the extension end of the first hydraulic push rod is fixedly connected with a fixed frame, a tension spring is arranged between the fixed frame and the fixed plate, the upper side of the fixed plate is fixedly connected with a lower mold, the fixed frame is slidably connected with a sliding frame, the sliding frames on the first hydraulic push rods in the same group are jointly and fixedly connected with an extrusion roller, the support plate is fixedly connected with a fixed sliding rail which is slidably connected with adjacent sliding frames, and the upper side of the rack is provided with an extrusion mechanism for extruding the upper part of the plywood.

[0005] More preferably, the extrusion mechanism comprises two groups of second hydraulic push rods symmetrically distributed, each group comprising uniformly distributed second hydraulic push rods, the telescopic ends of the second hydraulic push rods in the same group being fixedly connected with an upper die, the lower die and the symmetrically distributed upper dies together forming a complete circle, and the lower die and the symmetrically distributed upper dies being provided with expansion components for changing the respective thicknesses.

[0006] More preferably, the frame is fixedly connected with clamping frames symmetrically distributed away from the support plate, the clamping frames are provided with fixed clamping jaws symmetrically distributed, one side of the clamping frames is provided with upper rotating slide rails symmetrically distributed through the fixed clamping jaws thereon, the other side of the clamping frames is provided with lower rotating slide rails symmetrically distributed through the fixed clamping jaws thereon, the upper rotating slide rails are rotationally connected with adjacent lower rotating slide rails, and the upper rotating slide rails and the adjacent lower rotating slide rails form the same slide rail structure as the fixed slide rails.

[0007] More preferably, the fixed slide rails are provided with arc-shaped slide grooves and vertical slide grooves symmetrically distributed, the vertical slide grooves are in communication with adjacent arc-shaped slide grooves, and the length of the vertical slide grooves is greater than the thickness of the upper die.

[0008] More preferably, the expansion components comprise a first lower expansion die, the first lower expansion die being provided in the lower die, the first lower expansion die being provided with a second lower expansion die, the upper die being provided with a first upper expansion die, the first upper expansion die being provided with a second upper expansion die, the first lower expansion die, the second lower expansion die, the first upper expansion dies symmetrically distributed, and the second upper expansion dies symmetrically distributed being fixedly connected with fixed members symmetrically and uniformly distributed, the first lower expansion die being bolt-connected with the lower die through the fixed members thereon, the second lower expansion die being bolt-connected with the first lower expansion die through the fixed members thereon, the first upper expansion die being bolt-connected with adjacent upper dies through the fixed members thereon, and the second upper expansion die being bolt-connected with adjacent first upper expansion dies through the fixed members thereon.

[0009] More preferably, the extrusion rollers are rotationally connected with first extrusion members on the outer sides, the first extrusion members are rotationally connected with second extrusion members on the outer sides, the first extrusion members and the second extrusion members are fixedly connected with connecting members, the first extrusion members are bolt-connected with adjacent extrusion rollers through the connecting members thereon, and the second extrusion members are bolt-connected with adjacent first extrusion members through the connecting members thereon.

[0010] More preferably, the cross sections of the first extrusion piece and the second extrusion piece are both C-shaped, and the angles of the outer arc segments of the first extrusion piece and the second extrusion piece are both greater than 180°, and the angles of the inner arc segments of the first extrusion piece and the second extrusion piece are both less than or equal to 180°.

[0011] More preferably, the upper side of the rack is fixedly connected with a third hydraulic push rod, and the telescopic end of the third hydraulic push rod is fixedly connected with a spray head, and the spray head is located directly above the fixed roller.

[0012] More preferably, the lower mold, the upper mold, the first lower extension mold, the second lower extension mold, the symmetrically distributed first upper extension mold and the symmetrically distributed second upper extension mold are all provided with heating cavities, the lower mold, the upper mold, the symmetrically distributed first lower extension mold and the symmetrically distributed first upper extension mold are all fixedly connected with male connectors in communication with the heating cavities therein, the male connectors are provided with a first interface and a second interface, the male connectors are slidably connected with male clamping valves, and a tension spring is arranged between the male connectors and the male clamping valves, the first interface and the second interface are both in sealed cooperation with adjacent male clamping valves, the second lower extension mold, the second upper extension mold, the male connector on the first lower extension mold and the male connector on the first upper extension mold are all fixedly connected with female connectors through hoses and are in communication with the female connectors, the female connectors are slidably connected with female clamping valves, and a tension spring is fixedly connected between the female connectors and the female clamping valves, the female connectors are in sealed and limiting cooperation with adjacent female clamping valves, the female clamping valves are in extruding cooperation with adjacent male clamping valves, the female connectors are slidably connected with sleeves, and a spring is fixedly connected between the female connectors and the sleeves, the female connectors are slidably connected with limiting balls, the limiting balls are in limiting cooperation with adjacent sleeves, and the limiting balls on the female connectors are in limiting cooperation with adjacent male connectors.

[0013] More preferably, an environment-friendly plywood cylinder structure comprises an outer plywood, an inner plywood and a double-sided glue-coated single board, the outer plywood, the double-sided glue-coated single board and the inner plywood all have cylinder structures with diameters decreasing in sequence, the angle between the cylinder interface of the outer plywood and the cylinder interface of the inner plywood is 180°, and the cylinder interfaces of the outer plywood, the double-sided glue-coated single board and the inner plywood are alternately distributed in pairs.

[0014] Compared with the prior art, the present application has the following advantages: the present application moves the extrusion roller and its components along a fixed path to extrude the plywood, thereby ensuring the continuity and uniformity of the force received by each part of the plywood and reducing the occurrence of indentation of the plywood due to uneven force.

[0015] The present application changes the number of parts installed on the lower mold, the extrusion roller and the upper mold, changes the inner diameter of the extruded plywood parts, so that the device can extrude multiple plywood in turn during hot pressing, thereby supporting more abundant plywood group circle schemes and increasing the application range of the device.

[0016] The present application maximizes the utilization of heat resources by heating only the parts that fit the plywood, thereby increasing the energy utilization efficiency of the device and the heating effect on the plywood.

[0017] The present application staggered the outer plywood cylinder interface, the double-sided glue-coated single board cylinder interface and the inner plywood cylinder interface from each other, so that they adhere to each other, increasing the firmness of the cylinder after compression, and reducing the probability of the plywood collapsing outward along the cylinder interface during subsequent use of the plywood cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0019] Figure 2 is a schematic diagram of the three-dimensional structure of the present application rack, support plate and fixed roller;

[0020] Figure 3 is a schematic diagram of the three-dimensional structure of the present application support plate, electric rotating shaft and fixed roller;

[0021] Figure 4 is a schematic diagram of the three-dimensional structure of the present application first hydraulic push rod, fixed plate and fixed frame;

[0022] Figure 5 is a detail display diagram of the present application sliding frame extrusion roller and first extrusion part;

[0023] Figure 6 is a schematic diagram of the three-dimensional structure of the present application rack, support plate and fixed slide rail;

[0024] Figure 7 is a schematic diagram of the three-dimensional structure of the present application clamping frame, upper rotating slide rail and lower rotating slide rail;

[0025] Figure 8 is a detail display diagram of the present application clamping frame, fixed clamping jaw and upper rotating slide rail;

[0026] Figure 9 is a sectional view of the present application lower mold, first lower expansion mold and second lower expansion mold;

[0027] Figure 10 is a sectional view of the present application upper mold, first upper expansion mold and second upper expansion mold;

[0028] Figure 11 is a sectional view of the male joint, the male valve and the female joint of the present application;

[0029] Figure 12 is a detail display diagram of the male joint, the male valve and the female joint of the present application;

[0030] Figure 13 is a perspective structural schematic diagram of the outer plywood, the inner plywood and the double-sided glued veneer of the present application.

[0031] The labels of the components in the drawings are as follows: 1, frame, 2, support plate, 3, electric rotating shaft, 4, fixed roller, 5, first hydraulic push rod, 6, fixed plate, 7, fixed frame, 8, tension spring, 9, lower mold, 10, sliding frame, 13, extrusion roller, 14, fixed sliding rail, 15, second hydraulic push rod, 16, upper mold, 17, clamping frame, 18, fixed clamping jaw, 19, upper rotating sliding rail, 20, lower rotating sliding rail, 21, first lower expansion mold, 22, second lower expansion mold, 23, first upper expansion mold, 24, second upper expansion mold, 25, fixing piece, 26, first extrusion piece, 27, second extrusion piece, 271, connecting piece, 28, third hydraulic push rod, 29, spraying head, 30, male joint, 301, first interface, 302, second interface, 31, male valve, 32, female joint, 33, female valve, 34, sleeve, 35, outer plywood, 36, inner plywood, 37, double-sided glued veneer. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Embodiment 1: Because the existing devices all use fixed molds to extrude the substrate of the plywood, when the fixed mold contacts the substrate of the plywood, the mold can only first extrude the plywood through its two ends, resulting in that the two ends of the plywood are subjected to a larger force, while the middle part is subjected to a smaller force. When the force on the plywood is uneven, the deformation amount of each part of the plywood is also different. If the humidity is too large during the hot steam process of the plywood, plastic indentation is easily generated due to excessive pressure, resulting in that the surface of the formed circular plywood has indentation, which affects the smoothness of the surface of the plywood.

[0034] In view of the above problems, an environmental protection hot-pressing device for forming a circle of plywood is provided, which refers to Figures 1-5As shown, including organic frame 1, the outside of the frame 1 is fixed with a control terminal, the rear side of the frame 1 is fixed with a support plate 2, the front side of the support plate 2 is installed with an electric rotating shaft 3 electrically connected with the control terminal, the outside of the electric rotating shaft 3 is fixed with a fixed roller 4, the electric rotating shaft 3 drives the fixed roller 4 to rotate, drives the hot-pressed plywood on it to rotate, and further forms more plywood combination schemes, the lower part of the frame 1 is fixed with two groups of first hydraulic push rods 5 which are symmetrically distributed and are electrically connected with the control terminal, each group includes two first hydraulic push rods 5 which are uniformly distributed in front and back, the extension end of all first hydraulic push rods 5 is commonly and slidingly connected with a fixed plate 6, the extension end of the first hydraulic push rod 5 is fixed with a fixed frame 7, a tension spring 8 is installed between the fixed frame 7 and the fixed plate 6, the fixed frame 7 moves the fixed plate 6 by pulling the tension spring 8 to move together with the extension end of the first hydraulic push rod 5, the upper side of the fixed plate 6 is fixed with a lower mold 9, the lower mold 9 keeps the adjacent plywood in circular arc type by extruding the adjacent plywood, and further assists the plywood to be shaped, the fixed frame 7 is slidingly connected with a sliding frame 10, the two first hydraulic push rods 5 in the same group are commonly fixed with an extrusion roller 13, the extrusion roller 13 is used for extruding the plywood to deform, and because the movement track of the extrusion roller 13 is fixed, the extrusion force applied by the extrusion roller 13 to the plywood remains unchanged, the support plate 2 is fixed with a fixed slide rail 14, the fixed slide rail 14 is provided with an arc-shaped sliding groove and two vertically sliding grooves which are symmetrically distributed upward and downward (the arc-shaped sliding groove and the two vertically sliding grooves are collectively referred to as sliding grooves), the vertically sliding groove is communicated with the adjacent arc-shaped sliding groove, the fixed slide rail 14 is slidingly connected with the adjacent sliding frame 10 through the sliding grooves thereon, and the upper side of the frame 1 is provided with an extrusion mechanism for extruding the upper part of the plywood, the extrusion mechanism is electrically connected with the control terminal.

[0035] Referring to Figure 2 and Figure 3 As shown, the extrusion mechanism includes two groups of second hydraulic push rods 15 which are symmetrically distributed and are electrically connected with the control terminal, each group includes two second hydraulic push rods 15 which are uniformly distributed in front and back, the extension end of the two second hydraulic push rods 15 in the same group is commonly fixed with an upper mold 16, the two upper molds 16 are commonly matched, and commonly extrude the plywood to be bent to the position of the upper part, the length of the vertically sliding groove is greater than the thickness of the upper mold 16, the lower mold 9 and the upper molds 16 which are symmetrically distributed form a complete circle, and the three are commonly matched to limit the plywood which is extruded to be circular, and wait for the plywood to be dried and shaped, and the lower mold 9 and the two upper molds 16 are commonly provided with expansion components for changing the thicknesses of the respective molds.

[0036] Referring to Figures 6-8As shown, the front side of the rack 1 is fixed with two clamping frames 17 symmetrically distributed up and down, the clamping frame 17 is installed with two fixed clamps 18 symmetrically distributed and electrically connected with the control terminal, the fixed clamp 18 is an existing device, used for clamping adjacent parts, the upper clamping frame 17 is installed with two upper rotating slide rails 19 symmetrically distributed left and right through the fixed clamp 18 thereon, the lower clamping frame 17 is installed with two lower rotating slide rails 20 symmetrically distributed left and right through the fixed clamp 18 thereon, the upper rotating slide rail 19 is rotationally connected with the adjacent lower rotating slide rail 20, and the upper rotating slide rail 19 and the adjacent lower rotating slide rail 20 form a slide rail with the same structure as the adjacent fixed slide rail 14, which guides the adjacent slide frame 10 and the adjacent extrusion roller 13 together to ensure that the extrusion roller 13 uniformly applies pressure to the plywood.

[0037] Referring to Figures 6-8 As shown, the expansion component includes a first lower expansion die 21, the first lower expansion die 21 is arranged in the lower die 9, the first lower expansion die 21 is provided with a second lower expansion die 22, the upper die 16 is provided with a first upper expansion die 23, the first upper expansion die 23 is provided with a second upper expansion die 24, the first lower expansion die 21, the second lower expansion die 22, the symmetrically distributed first upper expansion die 23 and the symmetrically distributed second upper expansion die 24 are all fixed with two groups of fixing members 25 symmetrically distributed front and back, each group contains two fixing members 25 uniformly distributed left and right, the fixing member 25 is provided with a reinforcing rib for stably increasing the connection strength between the connected parts, the first lower expansion die 21 is connected with the lower die 9 through the fixing member 25 thereon by bolts, the second lower expansion die 22 is connected with the first lower expansion die 21 through the fixing member 25 thereon by bolts, the first upper expansion die 23 is connected with the adjacent upper die 16 through the fixing member 25 thereon by bolts, and the second upper expansion die 24 is connected with the adjacent first upper expansion die 23 through the fixing member 25 thereon by bolts.

[0038] Referring to Figure 5As shown, the outer side of the extrusion roller 13 is detachably rotatably connected with the first extrusion piece 26, the outer side of the first extrusion piece 26 is detachably rotatably connected with the second extrusion piece 27, the cross section of the first extrusion piece 26 and the second extrusion piece 27 are both C-shaped, and the angle of the outer side arc segment of the first extrusion piece 26 and the outer side arc segment of the second extrusion piece 27 is both greater than 180°, for ensuring that the extrusion position with the plywood is a standard arc type, and then ensuring that the plywood is uniformly extruded everywhere, the angle of the inner side arc segment of the first extrusion piece 26 and the inner side arc segment of the second extrusion piece 27 is both less than or equal to 180°, facilitating the disassembly of the two, the first extrusion piece 26 and the second extrusion piece 27 are both fixedly connected with the connecting piece 271 (the connecting piece 271 is similar to the fixed piece 25 in principle and function, for fixing two adjacent parts), the first extrusion piece 26 is bolted with the adjacent extrusion roller 13 through the connecting piece 271 thereon, the second extrusion piece 27 is bolted with the adjacent first extrusion piece 26 through the connecting piece 271 thereon, because the fixed piece 25 and the connecting piece 271 are bolted with the adjacent parts, easy to disassemble, so that the connection mode is high in convenience.

[0039] Referring to Figure 2 and Figure 3 As shown, the upper side of the rack 1 is fixedly connected with the third hydraulic push rod 28 which is electrically connected with the control terminal, the telescopic end of the third hydraulic push rod 28 is fixedly connected with the spray head 29, the spray head 29 is an existing device, is in communication with the external glue supply device, is used for dropping glue solution to the plywood below, facilitating the mutual bonding between the two plywood, and the spray head 29 is located directly above the fixed roller 4.

[0040] Referring to Figures 9-12 As shown, the lower mold 9, the upper mold 16, the first lower expansion mold 21, the second lower expansion mold 22, the symmetrically distributed first upper expansion mold 23 and the symmetrically distributed second upper expansion mold 24 are all provided with heating cavities (such as Figure 9 and Figure 10The lower mold 9, the upper mold 16, the symmetrically distributed first lower extension mold 21 and the symmetrically distributed first upper extension mold 23 are all fixedly connected with the male connector 30 in communication with the inner heating cavity, and the male connector 30 on the front side of the lower mold 9 and the male connector 30 on the front side of the upper mold 16 are both in communication with the external heating device through a hose, and the heating device is an existing device for injecting hot water into the male connector 30 of the lower mold 9, and the male connector 30 on the rear side of the lower mold 9 and the male connector 30 on the rear side of the upper mold 16 are used to return the hot water to the heating device, so as to promote the circulating flow of the hot water, and then heat and dry the plywood, and the male connector 30 is provided with a first port 301 and a second port 302, the first port 301 is located on one side of the male connector 30 close to the adjacent heating cavity, and the second port 302 is located on the side of the male connector 30 away from the adjacent heating cavity, and the male connector 30 is slidably connected with the male check valve 31, and a tension spring is installed therebetween, and the initial state of the tension spring is a force storage state, the male check valve 31 blocks the hot water from flowing into the adjacent heating cavity by sealing cooperation with the adjacent first port 301, and the male check valve 31 prevents the circulating hot water from being sprayed outwards by sealing cooperation with the adjacent second port 302, the second lower extension mold 22, the second upper extension mold 24, the upper male connector 30 of the first lower extension mold 21 and the upper male connector 30 of the first upper extension mold 23 are all fixedly connected with the female connector 32 through a hose, and the female connector 32 and the upper parts thereof cooperate with the adjacent male connector 30 in the principle of the existing quick connector device of the water pipe, the female connector 32 is slidably connected with the female check valve 33, and a tension spring is fixedly connected therebetween, and the initial state of the tension spring is a force storage state, the female check valve 33 is sealingly and limitingly matched with the adjacent female connector 32, so as to prevent the water flow from being sprayed outwards from the female connector 32, the female check valve 33 is extrudedly matched with the adjacent male check valve 31, so as to push the adjacent male check valve 31 to move, the female connector 32 is slidably connected with the sleeve 34, and a spring is fixedly connected therebetween, the female connector 32 is slidably connected with the limiting ball, the limiting ball is limitingly matched with the adjacent sleeve 34, and the limiting ball on the female connector 32 is limitingly matched with the adjacent male connector 30, and the limiting mode at this position is consistent with the limiting principle of the existing quick connector device of the water pipe.

[0041] When the staff is hot pressing the board used for producing plywood, first, the staff puts the board into the steam equipment to heat and steam, then the staff puts the board in the correct order and evenly spreads the glue on the board, the staff controls the terminal to close the two fixed clamps 18 on the lower clamping frame 17, so that the two fixed clamps 18 release the clamping of the lower rotating slide rail 20, at this time the staff rotates the lower rotating slide rail 20 upward along the upper rotating slide rail 19, exposes the space in front of the second extrusion piece 27, finally the staff lifts the assembled plywood to the upper side of the two second extrusion pieces 27, and ensures that the center line of the plywood is located directly below the fixed roller 4, then the staff rotates the lower rotating slide rail 20 to reset, and controls the two fixed clamps 18 to clamp the lower rotating slide rail 20 through the control terminal, preparing to hot press the plywood.

[0042] When the staff is hot pressing the board used for producing plywood, first, the staff puts the board into the steam equipment to heat and steam, then the staff puts the board in the correct order and evenly spreads the glue on the board, the staff controls the terminal to close the two fixed clamps 18 on the lower clamping frame 17, so that the two fixed clamps 18 release the clamping of the lower rotating slide rail 20, at this time the staff rotates the lower rotating slide rail 20 upward along the upper rotating slide rail 19, exposes the space in front of the second extrusion piece 27, finally the staff lifts the assembled plywood to the upper side of the two second extrusion pieces 27, and ensures that the center line of the plywood is located directly below the fixed roller 4, then the staff rotates the lower rotating slide rail 20 to reset, and controls the two fixed clamps 18 to clamp the lower rotating slide rail 20 through the control terminal, preparing to hot press the plywood.

[0043] In the above process, because the pressure exerted by the second extrusion piece 27 on the plywood is always related to the distance between the second extrusion piece 27 and the fixed roller 4, and the movement track of the second extrusion piece 27 is determined by the sliding groove of the fixed slide rail 14, therefore the distance between the second extrusion piece 27 and the fixed roller 4 is always equal to a constant value, so the pressure exerted by the second extrusion piece 27 on the plywood is relatively constant, avoiding the problem that the pressure on both sides of the plywood is greater than the pressure on other positions, and the pressure on the plywood during pressing is uneven.

[0044] When the telescopic end of the first hydraulic push rod 5 drives the adjacent fixed frame 7 to move upward, the four first hydraulic push rods 5 synchronously drive the fixed plate 6 and other components to move upward through the respective adjacent tension spring 8, the fixed plate 6 drives the lower mold 9 and the upper components thereof to move upward together, the lower mold 9 gradually approaches the plywood, when the second extrusion piece 27 moves to the farthest position on both sides of the fixed roller 4, the sliding frame 10 starts to slide along the upper arc-shaped sliding groove in the fixed sliding rail 14, and continues to extrude the upper part of the plywood according to the same principle, then the lower mold 9 gradually contacts the plywood and extrudes the lower part of the plywood in the process of moving upward, so that the lower part of the plywood always maintains the state of contacting the fixed roller 4, then the lower mold 9 is limited by the plywood and cannot continue to move upward, the fixed frame 7 is driven by the telescopic end of the first hydraulic push rod 5 to continue to move upward, and the tension spring 8 is stretched to store energy.

[0045] When the two second extrusion pieces 27 move to the upper side of the plywood and contact each other, at this time the sliding frame 10 is located at the intersection of the arc-shaped sliding groove and the upper vertical sliding groove of the fixed sliding rail 14, the plywood is extruded by the two second extrusion pieces 27, and under the condition that each part is subjected to uniform extrusion force, a substantially circular shape is formed, the control terminal temporarily closes the first hydraulic push rod 5, and starts the second hydraulic push rod 15 on both sides, the telescopic end of the two second hydraulic push rods 15 synchronously extends to the middle, the second hydraulic push rod 15 drives the upper mold 16 thereon to move to the plywood, when the upper mold 16 moves to the position close to the adjacent second extrusion piece 27, the control terminal starts the four first hydraulic push rods 5 again, the telescopic end of the first hydraulic push rod 5 drives the sliding frame 10 and the second extrusion piece 27 to move upward along the vertical sliding groove on the upper side of the adjacent fixed sliding rail 14 through the adjacent components, at this time the second extrusion piece 27 no longer extrudes the plywood, but the plywood is preliminarily curved into an arc shape by the extrusion of the second extrusion piece 27, when the second extrusion piece 27 moves to the upper side of the fixed roller 4, the two upper molds 16 first extrude the upper side of the plywood while gradually approaching the plywood, and push the two ends on the upper side of the plywood to approach the middle, when the two upper molds 16 contact each other, the control terminal closes the second hydraulic push rod 15, the two upper molds 16 are spliced with each other and cooperate with the lower mold 9 to form a complete circular shape, and the plywood is extruded into a cylindrical shape, then the control terminal controls the upper mold 16 and the lower mold 9 to remain in place, and prepares to heat and dry the plywood.

[0046] The control terminal first controls the heating device to inject hot water into the downward mold 9 and the male joint 30 on the front side of the upper mold 16 through the hose. Taking one of the upper molds 16, the adjacent first upper expansion mold 23, and the adjacent second upper expansion mold 24 as an example: at this time, because the male joint 30 on the upper mold 16 is in engagement with the female joint 32 on the first upper expansion mold 23, the male clamp valve 31 and the female clamp valve 33 are in extrusion fit with each other, the male clamp valve 31 is extruded by the adjacent female clamp valve 33 and sealed with the first interface 301, the female clamp valve 33 is released from the sealed and limited fit with the adjacent female joint 32, and the tension spring on the male clamp valve 31 and the adjacent female clamp valve 33 is stretched. At this time, the second interface 302 is in an open state, so the hot water injected into the male joint 30 on the upper mold 16 is directly introduced into the hose connected to the adjacent female joint 32 and cannot enter the heating cavity on the upper mold 16. The female joint 32 on the first upper expansion mold 23 is connected to the hose and introduces hot water into the male joint 30 of the first upper expansion mold 23. The male joint 30 of the first upper expansion mold 23 is in engagement with the female joint 32 on the second upper expansion mold 24, so the hot water does not enter the heating cavity of the first upper expansion mold 23 and is directly introduced into the heating cavity of the second upper expansion mold 24. The second upper expansion mold 24 heats and dries the plywood through the hot water flowing in the heating cavity. As new hot water is continuously injected into the front side of the heating cavity of the second upper expansion mold 24, the excess hot water flowing into the heating cavity of the second upper expansion mold 24 gradually flows out through the adjacent hose and female joint 32 on the rear side. The hot water flows out through the male joint 30 on the rear side of the adjacent first upper expansion mold 23, the female joint 32 on the rear side, and the male joint 30 on the rear side of the adjacent upper mold 16, and finally flows back into the heating device.

[0047] When the plywood is dried and shaped, the staff stops injecting hot water into the heating cavity of the second upper expansion mold 24 through the control terminal, and controls the first hydraulic push rod 5 and the second hydraulic push rod 15 to drive the adjacent components to operate in reverse, and controls the adjacent components to move and reset.

[0048] When hot pressing multi-layer plywood is needed, the staff controls the electric rotating shaft 3 to drive the fixed roller 4 to rotate, so as to control the position of the joint of the hot-pressed plywood thereon, facilitate hot pressing of other plywood outside the already formed plywood, and make multiple plywood into a more complete circle. The staff first pulls the sleeve 34 of the female joint 32 on the second lower expansion die 22 and the second upper expansion die 24, and the sleeve 34 slides along the adjacent female joint 32. The spring on the sleeve 34 is compressed to store energy, the sleeve 34 releases the limiting of the adjacent limiting ball, the limiting ball on the adjacent female joint 32 no longer limits the adjacent male joint 30, the staff releases the connection between the female joint 32 and the adjacent male joint 30, the male valve 31 and the female valve 33 in the male joint 30 and the female joint 32 no longer press and fit each other, at this time the male valve 31 is away from the first interface 301 under the action of the adjacent tension spring, and the sealing fit relationship with the second interface 302 is restored. The female valve 33 restores the sealing and limiting fit with the adjacent female joint 32 under the action of the adjacent tension spring. When the staff releases the sleeve 34, the sleeve 34 is reset under the action of the adjacent spring and restores the limiting of the adjacent limiting ball. At this time, when the plywood is heated and dried, according to the above principle, hot water directly flows into the heating cavity of the first upper expansion die 23.

[0049] When the staff releases the connection between the female joint 32 and the adjacent male joint 30, the staff rotates the fixed part 25 on the second lower expansion die 22 and the second upper expansion die 24 by using a wrench, and removes the second lower expansion die 22 and the second upper expansion die 24 from the first lower expansion die 21 and the first upper expansion die 23 respectively to reserve the distance for pressing the second layer of plywood. The staff simultaneously releases the connection between the second extrusion part 27 and the first extrusion part 26 by rotating the bolt of the connecting part 271 on the two second extrusion parts 27. Then the staff removes the second extrusion part 27 from the first extrusion part 26 by rotating the second extrusion part 27. The staff places the second layer of plywood on the upper side of the two first extrusion parts 26, and applies glue on the upper side of the second layer of plywood. At the same time, the staff starts the third hydraulic push rod 28 by using the control terminal, and the telescopic end of the third hydraulic push rod 28 drives the spray head 29 to move downward to the upper side of the plywood cylinder. The staff rotates the fixed roller 4 and the plywood cylinder by using the electric rotating shaft 3 controlled by the remote control device, and supplies glue to the spray head 29 by using the external glue supply device. The glue flows downward from the spray head 29 to the surface of the plywood cylinder. When the surface of the plywood cylinder and the upper side of the second layer of plywood are fully coated with glue, the staff closes the glue supply device, and controls the telescopic end of the third hydraulic push rod 28 to reset the adjacent parts by using the control terminal. Then the staff presses the second layer of plywood by using the first lower expansion die 21, the first upper expansion die 23 and the first extrusion part 26 again according to the above steps, and manufactures a composite plywood cylinder.

[0050] When the hot pressing of the layer of plywood cylinder is completed, and it is still necessary to continue to press the plywood on it, the first lower expanding mold 21, the first upper expanding mold 23 and the first extrusion piece 26 are disassembled according to the above steps, so as to further press the new plywood on the plywood.

[0051] When it is not necessary to continue to press the plywood on the plywood cylinder, the staff controls the fixed clamping jaw 18 on the upper clamping frame 17 to release the clamping of the upper rotating slide rail 19 through the control terminal, and exposes the space in front of the fixed roller 4 by rotating the upper rotating slide rail 19, and the staff takes the plywood cylinder from the fixed roller 4.

[0052] Embodiment 2: An environmentally friendly plywood cylinder structure, referring to Figure 13 As shown in the figure, it comprises an outer plywood 35, an inner plywood 36 and a double-sided glued veneer 37, the outer plywood 35, the double-sided glued veneer 37 and the inner plywood 36 are all cylindrical structures with diameters decreasing in turn, the double-sided glued veneer 37 maintains firm connection with the outer plywood 35 and the inner plywood 36 through the glue applied on its two sides, the arc between the cylindrical interface of the outer plywood 35 and the cylindrical interface of the inner plywood 36 is 180°, so that the inner inner plywood 36 is difficult to extrude the outer outer plywood 35 together and spread apart, the cylindrical interface of the outer plywood 35, the cylindrical interface of the double-sided glued veneer 37 and the cylindrical interface of the inner plywood 36 are staggered in pairs, so that they adhere to each other and restrict each other, thereby increasing the firmness of the cylinder composed of the three, and reducing the probability that the three pieces of plywood will collapse outward along their cylindrical interfaces due to excessive stress during the subsequent use of the plywood cylinder.

[0053] Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that changes can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An environment-friendly plywood assembling and hot-pressing device, comprising a rack (1), wherein a supporting plate (2) is fixedly connected to the rack (1), an electric rotating shaft (3) is installed on the supporting plate (2), a fixed roller (4) is fixedly connected to the outer side of the electric rotating shaft (3), and two groups of first hydraulic push rods (5) are symmetrically arranged at the lower part of the rack (1), each group comprising two first hydraulic push rods (5) evenly distributed, and the telescopic ends of all the first hydraulic push rods (5) are slidably connected to a fixed plate (6). Two groups of symmetrically distributed fixing frames (7) are further included, each group including two uniformly distributed fixing frames (7), the fixing frames (7) being fixed to the telescopic ends of adjacent first hydraulic push rods (5), a tension spring (8) being installed between the fixing frames (7) and the fixing plates (6), the upper sides of the fixing plates (6) being fixed with lower molds (9), the fixing frames (7) being slidingly connected with sliding frames (10), the sliding frames (10) on the first hydraulic push rods (5) in the same group being fixed with extrusion rollers (13) together, the support plates (2) being fixed with fixed sliding rails (14) slidingly connected with adjacent sliding frames (10), the upper sides of the racks (1) being provided with extrusion mechanisms for extruding the upper parts of plywood; The extrusion mechanisms include two groups of symmetrically distributed second hydraulic push rods (15), each group including two uniformly distributed second hydraulic push rods (15), the telescopic ends of the second hydraulic push rods (15) in the same group being fixed with upper molds (16) together, the lower molds (9) and the symmetrically distributed upper molds (16) together forming a complete circle, the lower molds (9) and the symmetrically distributed upper molds (16) together being provided with expansion components for changing the thicknesses thereof; The fixed sliding rails (14) are provided with arc-shaped sliding grooves and symmetrically distributed vertical sliding grooves, the vertical sliding grooves being in communication with adjacent arc-shaped sliding grooves, the length of the vertical sliding grooves being greater than the thickness of the upper molds (16).

2. The hot-pressing device for the environment-friendly plywood according to claim 1, characterized in that: The racks (1) are fixed with symmetrically distributed clamping frames (17) away from the support plates (2), the clamping frames (17) being installed with symmetrically distributed fixed clamping jaws (18), one side of the clamping frames (17) being installed with symmetrically distributed upper rotating sliding rails (19) through the fixed clamping jaws (18) thereon, the other side of the clamping frames (17) being installed with symmetrically distributed lower rotating sliding rails (20) through the fixed clamping jaws (18) thereon, the upper rotating sliding rails (19) being rotatably connected with adjacent lower rotating sliding rails (20), the upper rotating sliding rails (19) and the adjacent lower rotating sliding rails (20) forming sliding rails with the same structure as the fixed sliding rails (14).

3. The hot-pressing device for the environment-friendly plywood according to claim 2, characterized in that: The expansion component comprises a first lower expansion die (21) arranged in the lower die (9), the first lower expansion die (21) is provided with a second lower expansion die (22), the upper die (16) is provided with a first upper expansion die (23), the first upper expansion die (23) is provided with a second upper expansion die (24), the first lower expansion die (21), the second lower expansion die (22), the symmetrically distributed first upper expansion die (23) and the symmetrically distributed second upper expansion die (24) are all fixed with symmetrically and uniformly distributed fixing members (25), the first lower expansion die (21) is bolted with the lower die (9) through the fixing members (25) thereon, the second lower expansion die (22) is bolted with the first lower expansion die (21) through the fixing members (25) thereon, the first upper expansion die (23) is bolted with the adjacent upper die (16) through the fixing members (25) thereon, and the second upper expansion die (24) is bolted with the adjacent first upper expansion die (23) through the fixing members (25) thereon.

4. The hot-pressing device for the environment-friendly plywood according to claim 3, characterized in that: The outer side of the extrusion roller (13) is rotatably connected with a first extrusion member (26), the outer side of the first extrusion member (26) is rotatably connected with a second extrusion member (27), the first extrusion member (26) and the second extrusion member (27) are both fixed with a connecting member (271), the first extrusion member (26) is bolted with the adjacent extrusion roller (13) through the connecting member (271) thereon, and the second extrusion member (27) is bolted with the adjacent first extrusion member (26) through the connecting member (271) thereon.

5. The hot-pressing device for the environment-friendly plywood according to claim 4, characterized in that: The cross section of the first extrusion member (26) and the second extrusion member (27) is C-shaped, the angle of the outer side circular arc segment of the first extrusion member (26) and the outer side circular arc segment of the second extrusion member (27) is greater than 180°, and the angle of the inner side circular arc segment of the first extrusion member (26) and the inner side circular arc segment of the second extrusion member (27) is less than or equal to 180°.

6. The hot-pressing device for the environment-friendly plywood according to claim 5, characterized in that: The upper side of the rack (1) is fixed with a third hydraulic push rod (28), the telescopic end of the third hydraulic push rod (28) is fixed with a spray head (29), and the spray head (29) is located directly above the fixing roller (4).

7. The hot-pressing device for the environment-friendly plywood according to claim 6, characterized in that: Heating cavities are arranged in the lower mold (9), the upper mold (16), the first lower extension mold (21), the second lower extension mold (22), the symmetrically distributed first upper extension mold (23) and the symmetrically distributed second upper extension mold (24), the lower mold (9), the upper mold (16), the first lower extension mold (21) and the symmetrically distributed first upper extension mold (23) are fixedly connected with the public joint (30) in communication with the heating cavities, the public joint (30) is provided with the first interface (301) and the second interface (302), the public joint (30) is slidably connected with the public valve (31), and a pull spring is arranged between the public joint (30) and the public valve (31), the first interface (301) and the second interface (302) are in sealing cooperation with the adjacent public valve (31), the second lower extension mold (22) and the first lower extension mold (21) are fixedly connected with the female joint (32) through the public joint (30) and are in communication, the second upper extension mold (24) and the first upper extension mold (23) are fixedly connected with the female joint (32) through the public joint (30) and are in communication, the female joint (32) is slidably connected with the female valve (33), and a pull spring is fixedly connected between the female joint (32) and the female valve (33), the female joint (32) is in sealing and limiting cooperation with the adjacent female valve (33), the female valve (33) is in extrusion cooperation with the adjacent public valve (31), the female joint (32) is slidably connected with the sleeve (34), and a spring is fixedly connected between the female joint (32) and the sleeve (34), the female joint (32) is slidably connected with the limiting ball, the limiting ball is in limiting cooperation with the adjacent sleeve (34), and the limiting ball on the female joint (32) is in limiting cooperation with the adjacent public joint (30).

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