Anti-mold-expansion scrimber pressing equipment

Abstract

The invention relates to mold-expansion-preventing recombined wood pressing equipment which comprises a forming press frame, a pressing head, a pressing plate, a backer base plate, a mold and a cover plate, the mold is arranged on a workbench and comprises a left side plate, a bottom face plate and a right side plate which are fixedly connected into a whole, the cover plate is arranged in the mold, and recombined wood materials are arranged in a space formed between the cover plate and the mold. A plurality of first pin holes are oppositely formed in the upper parts of the left side plate and the right side plate; a plurality of U-shaped openings are formed in the tops of the left side plate and the right side plate; the backer base plate is divided into a fixed backer and a movable backer, the fixed backer is arranged on the right side of the mold, and the movable backer is arranged on the left side of the mold; a cylindrical pin penetrating mechanism is further arranged, is arranged on the back side of the fixed backer and is used for mounting a cylindrical pin into the first pin hole; according to the scheme, cover plate mold expansion prevention is completed before the pressing head pressing plate is lifted, side mold expansion prevention is completed before the backing base plate retreats, and wood bunch blank scattering can be effectively prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of reconstituted wood processing, and in particular relates to anti-expansion mold reconstituted wood pressing equipment. Background Art

[0002] Reconstructed wood is a new type of wood-based reconstructed material, which is made of fast-growing forest wood as the base material. It is a staggered mesh wood beam square profile made by processes such as rotary disc debonding, glue impregnation and drying, and pressing and thermosetting, while retaining the basic characteristics of the wood and the direction of fiber arrangement. Molded reconstructed wood changes the original material structure, improves the material density and structural strength, and has uniform density. It can be made into high-strength profiles of various specifications according to demand. It has the advantages of high strength, high corrosion resistance, superior performance and natural wood texture.

[0003] The key to its forming is to use a hydraulic press to form a closed mold cavity with discrete staggered wood bundles, a mold, a cover plate and an anti-expansion pin to fix the material in it, and squeeze it into the mold through the pressure head. The mold group that imprisoned the wood was taken out of the press and sent to the heat treatment kiln to bond and solidify the impregnated base material to eliminate the residual mold expansion force. After the discrete wood bundles are completely bonded and cooled, they are separated from the mold to form a complete reconstructed wood profile.

[0004] The discrete wood bundles are vertically extruded in the press, and the mold cavity is subjected to lateral expansion pressure to produce a mold expansion effect. In order to resist lateral mold expansion during the pressing process, the left and right backing pads need to be used to clamp the mold before pressing to prevent the mold from being deformed by the mold expansion force. After the pressing is completed, the mold and the pressed wood bundles are taken out of the press together. The left and right backing pads need to be loosened before the mold is pulled out. After the mold loses the fastening force of the backing pads, the residual mold expansion force of the compressed wood causes the mold to expand outward, seriously affecting the product density. The finished wood square formed by the expanded and deformed wood bundles needs secondary processing to form a standardized rectangle, which increases the wood square contour sizing processing volume. In order to ensure the quality and size of the reconstructed wood square finished product, a locking device needs to be used to provide anti-deformation locking force to the mold. Summary of the invention

[0005] The technical problem to be solved by the present invention is that in the existing reconstituted wood forming press, after the pressing mechanism is withdrawn, the loose wood bundles in the mold expand under the action of the internal expansion pressure, causing the internal wood bundles to loosen.

[0006] The present invention solves the above-mentioned problem by adopting the following technical solution: An anti-expansion mold reconstructed wood pressing equipment includes a forming press frame, a pressing head, a pressing plate, a backing pad, a mold and a cover plate. The forming press frame adopts a three-beam four-column welded frame structure, the upper crossbeam is used to assemble the driving components of the pressing head and the pressing plate, and the lower crossbeam is installed with a workbench. The mold is arranged on a workbench, and includes a left plate, a bottom plate and a right plate which are fixedly connected as one body. A cover plate is arranged in the mold, and a space formed between the cover plate and the mold contains reconstituted wood material. A plurality of first pin holes are arranged at the upper portions of the left plate and the right plate; a plurality of U-shaped openings are arranged at the top portions of the left plate and the right plate; The backing plate is divided into a fixed backing and a movable backing. The fixed backing is set on the right side of the mold, and the movable backing is set on the left side of the mold; Also includes: A cylindrical pin is inserted into the first pin hole and is used to constrain the cover plate to perform a rising mold constraint; A tie rod is arranged in the U-shaped opening and is used to constrain the left and right plates to expand the mold sideways; A cylindrical pin-penetrating mechanism, arranged on the back side of the fixed backer, for installing the cylindrical pin into the first pin hole; The pull rod pinning mechanism is arranged on the back side of the movable backrest and is used to install the pull rod to the U-shaped opening.

[0007] Compared with the prior art, the present invention adopting the above structure has the following beneficial effects: 1) Solve the problem of mold expansion of the cover plate and the side wall of the mold caused by the expansion of compressed wood, and realize the tightening effect of the closed mold cavity formed by the mold and the cover plate on the wood; 2) This solution completes the prevention of mold expansion of the cover plate before the pressure head and the pressure plate are lifted, and completes the prevention of side mold expansion before the backing pad is retreated, which can effectively preserve the restraint force of the press on the loose wood bundles when pressing the reconstructed wood, and prevent the loose wood bundles from loosening before heat treatment and bonding and curing, resulting in insufficient density of the reconstructed wood, and even large deformation after the reconstructed wood is formed, resulting in cracking and other problems; 3) The anti-expansion mold parts of the mold are automatically installed by machinery, which reduces labor input, improves production efficiency, and controllable product quality.

[0008] As a preferred embodiment, a further technical solution of the above structure is: The cylindrical pin is a straight round rod, and its two ends are inserted into the first pin holes opposite to the left and right plates of the mold. The cylindrical pin is located on the upper side of the cover plate, and its two ends protrude outside the left and right plates; the pull rod includes round steel and blocks fixed at both ends of the round steel. The pull rod is set in the U-shaped opening, and the blocks at both ends of the round steel are located on the outside of the left and right plates.

[0009] The fixed backrest is fixedly connected to the workbench by bolts, and a groove is provided on the inner wall of the fixed backrest corresponding to the first pin hole and the U-shaped opening, and a second pin hole is provided on the side wall of the groove corresponding to each first pin hole; the inner wall of the movable backrest is provided with a groove corresponding to the first pin hole and the U-shaped opening, and a third pin hole is provided on the side wall of the groove corresponding to each U-shaped opening, and the aperture of the third pin hole is larger than the diameter of the block, and at least one short-stroke hydraulic cylinder is installed on the back of the movable backrest to drive the movable backrest to move forward and backward to adjust the interval between the movable backrest and the fixed backrest.

[0010] The cylindrical pin-threading mechanism includes a pin distribution platform, a plurality of pin grooves are arranged on the pin distribution platform, the spacing between the pin grooves is consistent with the spacing between the first pin holes, a pin feeding box is provided on the pin distribution platform, a walking drive mechanism is provided on the back side of the pin feeding box, and the walking drive mechanism drives the pin feeding box to move on the pin distribution platform; a pushing mechanism is provided on the back side of the pin distribution platform, which is used to push the cylindrical pins in each pin groove forward so that the cylindrical pins pass through the second pin hole and enter the first pin hole.

[0011] The pull rod pinning mechanism includes a pull rod feeding platform, on which a plurality of pull rod grooves are arranged, and the spacing between the pull rod grooves is consistent with the spacing between the U-shaped openings; a pull rod feeding box is provided on the pull rod feeding platform; a travel drive mechanism is provided on the back of the pull rod feeding box for driving it to move on the pull rod feeding platform, and a push pushing mechanism is provided on the back side of the pull rod feeding platform for pushing the pull rod in the pull rod groove forward so that the pull rod passes through the third pin hole and enters the U-shaped opening.

[0012] The pin feeding box and the pull rod feeding box include a cylinder, a traveling wheel is installed at the lower part of the cylinder, the upper end of the cylinder is opened for loading cylindrical pins or pull rods, and the lower end of the cylinder is provided with a discharge port, and the width of the discharge port only allows one cylindrical pin or pull rod to leak out at a time.

[0013] The travel drive mechanism includes a sliding beam and a slider. The sliding beam is arranged parallel to the pin feeding platform or the pull rod feeding platform. The slider is slidably arranged on the sliding beam. The slider is fixed to the back of the pin feeding box or the pull rod feeding box. It also includes a synchronous belt and a reduction motor. The active block is fixed to the synchronous belt, and the active block is fixed to the back of the feeding box.

[0014] The sales promotion mechanism comprises a mounting plate, a plurality of push rods are arranged on the front side of the mounting plate, the push rods are arranged in each column pin groove or each pull rod groove, and at least one push-pull cylinder is arranged on the rear side of the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the molding press of the present invention; Figure 2 It is a schematic diagram of the front structure of the anti-expansion mold part of the present invention; Figure 3 This is a three-dimensional structural diagram of the anti-expansion mold part of the present invention; Figure 4 It is a schematic diagram of the structure of the pressure head and pressure plate of the present invention; Figure 5 This is a diagram showing the effect of mold expansion and locking of the present invention; Figure 6 It is a schematic diagram of a fixed backrest of the present invention; Figure 7 It is the inner structural diagram of the movable backrest of the present invention; Figure 8 This is a back structure diagram of the movable backrest of the present invention; Fig. 9 It is a diagram of a cylindrical pinning mechanism of the present invention; Fig.10 This is a diagram of the pull rod pinning mechanism of the present invention; Fig.11 This is a diagram showing an embodiment of a pull rod of the present invention; Fig.12 It is a structural diagram of a feeding box of the present invention.

[0016] In the figure: 1. Forming press frame; 101. Upper crossbeam; 102. Lower crossbeam; 2. Driving assembly of pressure head and pressure plate; 201. Main oil cylinder; 202. Moving beam; 3. Pressure head; 4. Pressure plate; 5. Die; 501. Left side plate; 502. Bottom plate; 503. Right side plate; 504. First pin hole; 505. U-shaped opening; 6. Backing pad; 601. Fixed backing; 6011. First pin hole; 602. Movable backing; 6021. Third pin hole; 6022. Groove; 6023. Short-stroke hydraulic cylinder; 7. Workbench; 8. Cylindrical pin-threading mechanism; 801, pin-threading distribution platform; 802, pin-threading feeding box; 9, pull rod pin-threading mechanism; 901, pull rod-threading distribution platform; 902, pull rod-threading feeding box; 9021, material discharge port; 9022, walking wheel; 10, cover plate; 11, walking drive mechanism; 111, reduction motor; 112, synchronous belt; 12, sales promotion mechanism; 121, push-pull cylinder; 122, mounting plate; 123, push rod; 124, electromagnetic buckle; 13, cylindrical pin; 14, pull rod; 141, round steel; 142, stopper; 15, pin slot; 16, pull rod slot. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0018] The basic structure of the reconstituted wood pressing equipment includes: a forming press frame 1, a pressing head 3, a pressing plate 4, a backing pad 6, a mold 5 and a cover plate 10. The forming press frame 1 adopts a three-beam four-column welded frame structure, and its upper crossbeam 101 is used to assemble the driving assembly 2 of the pressing head and the pressing plate, and the lower crossbeam 102 is installed on the workbench 7; the workbench 7 is used to place the U-shaped mold 5, and the cover plate 10 is arranged on the upper part of the mold 5, and the material is located in the space formed between the cover plate 10 and the mold 5; a backing pad 6 is arranged on the side of the mold 5; the pressing head and the pressing plate press the cover plate 10 from the top under the action of the driving assembly, thereby squeezing the material, and the backing pad 6 presses the mold 5 from the outside to prevent the mold 5 from deforming during the reconstituted wood pressing process.

[0019] The discrete wood bundles are compressed into the mold cavity of the mold 5. Before the heat treatment, bonding and curing, the wood generates a mold expansion force on the mold 5. The direction of the mold expansion is mostly upward from the inner cavity of the mold 5 to lift the cover plate 10, and push the left plate 501 and the right plate 503 to expand the mold laterally from the inside of the mold 5 to the left and right. In order to prevent the mold 5 from being deformed by internal force, affecting the shape, size and density of the wood square product, and to avoid the situation where the reconstructed wood square is not sufficiently bonded and cured due to the lack of continuous tightening force and the cracking of the finished product, the invention provides a locking solution for the anti-expansion mold of the reconstructed wood pressing mold.

[0020] In order to prevent the cover plate 10 from rising after the pressing plate 4 is lifted, a cylindrical pin 13 is used. The cylindrical pin 13 is a straight round rod, and its two ends are inserted into the left plate 501 and the right plate 503 of the mold 5. It is located on the upper side of the cover plate 10. After the pressing plate 4 is lifted, it replaces the pressing plate 4 to constrain the position of the cover plate 10, thereby maintaining the cover plate 10 to suppress the material; in order to prevent the mold 5 from lateral expansion after the backing plate 6 is returned, a pull rod 14 is used. The pull rod 14 includes a round steel 141 and a stopper 142 fixed at both ends of the round steel. The pull rod 14 is set on the U-shaped opening 505. The stoppers 142 at both ends of the round steel 141 are located on the outside of the mold 5. The stoppers 142 constrain the two side plates of the mold 5 from deforming outward, thereby maintaining the suppression of the mold side. Optional, see Fig.11 , turnbuckles are arranged at both ends of the round steel 141 of the pull rod 14, and the stopper 142 is a cylindrical block with a central threaded hole. The spacing between the two stoppers is adjustable, so that it can be applied to molds 5 of different widths or used to adjust the tension on the left and right side panels.

[0021] See also Figures 1 to 11 The following is a detailed description of each part of the anti-expansion mold reconstructed wood pressing equipment provided by the present invention: See also Figure 1 The forming press frame 1 is a frame welded by steel beams and steel columns, and the driving assembly 2 of the pressing head and the pressing plate assembled thereon is: the upper cross beam 101 is embedded in the main oil cylinder 201, the piston head of the main oil cylinder 201 is connected to the movable beam 202, and the two ends of the movable beam 202 are slidably connected to the forming press frame 1, the pressing head 3 is installed under the movable beam 202, and the pressing plate 4 is installed on the lower side of the pressing head 3, and the pressing head 3 transmits the pressing load to the pressing plate 4.

[0022] See also Figure 4 An electromagnet is installed at the bottom of the pressure head 3, and the pressure plate 4 is a tooth groove type, and the cover plate 10 is obtained by the suction force of the electromagnet.

[0023] See also Figure 5The mold 5 includes a left side plate 501, a bottom plate 502 and a right side plate 503 which are fixedly connected as a whole. A plurality of first pin holes 504 are relatively arranged on the upper parts of the left side plate 501 and the right side plate 503, and a cylindrical pin 13 is arranged in each of the first pin holes 504; a plurality of U-shaped openings 505 are arranged on the tops of the left side plate 501 and the right side plate 503, and a pull rod 14 is arranged in each of the U-shaped openings 505.

[0024] The cover plate 10 is disposed in the mold 5 , above the material and below the first pin hole 504 .

[0025] The backing pad 6 is divided into a fixed backing 601 and a movable backing 602 . The fixed backing 601 is arranged on the right side of the mold 5 , and the movable backing 602 is arranged on the left side of the mold 5 .

[0026] This scheme also designs a mechanism for automatically installing each cylindrical pin 13 and the pull rod 14: See also Figure 2 , Figure 3 The cylindrical pinning mechanism 8 is arranged on the back side of the fixed backing 601, and is used to install the cylindrical pin 13 to the first pin hole 504; the pull rod pinning mechanism 9 is arranged on the back side of the movable backing 602, and is used to install the pull rod 14 to the U-shaped opening 505. The backing pad 6 is made of thick plate welded.

[0027] See also Figure 6 The fixed backing 601 is fixedly connected to one side of the workbench 7 by bolts, and a groove 6022 is provided in the inner wall of the fixed backing 601 corresponding to the first pin hole 504 and the U-shaped opening 505, and a second pin hole 6011 is provided on the side wall of the groove 6022 corresponding to each first pin hole 504.

[0028] See also Figure 7 , Figure 8 The inner wall of the movable backing 602 is provided with a groove 6022 in the area corresponding to the first pin hole 504 and the U-shaped opening 505, and the side wall of the groove 6022 is provided with a third pin hole 6021 corresponding to each U-shaped opening 505, and the aperture of the third pin hole 6021 is larger than the diameter of the stopper 142. At least one short-stroke hydraulic cylinder 6023 is installed on the back of the movable backing 602, so as to drive the movable backing 602 to move forward and backward to adjust the interval between the movable backing 602 and the fixed backing 601. When the short-stroke hydraulic cylinder 6023 is pushed out, the interval between the movable backing 602 and the fixed backing 601 is equal to the mold 5; and when the mold 5 needs to be taken out or waiting for the mold 5 to be loaded, the short-stroke hydraulic cylinder 6023 is retracted to increase the moving clearance of the mold 5 by 10mm.

[0029] See also Fig. 9The cylindrical pin-threading mechanism 8 includes a pin distribution platform 801, on which a plurality of pin grooves 15 are arranged, and the spacing between each pin groove 15 is consistent with the spacing between each first pin hole 504. A pin feeding box 802 is provided on the pin distribution platform 801, and a walking drive mechanism 11 is provided on the back side of the pin feeding box 802. The walking drive mechanism 11 drives the pin feeding box 802 to move on the pin distribution platform 801; a pushing mechanism 12 is provided on the back side of the pin distribution platform 801, which is used to push the cylindrical pins 13 in each pin groove 15 forward, so that the cylindrical pins 13 pass through the second pin hole 6011 and enter the first pin hole 504.

[0030] See also Fig.10 The pull rod pinning mechanism 9 includes a pull rod feeding platform 901, on which a plurality of pull rod grooves 16 are arranged, and the spacing between the pull rod grooves 16 is consistent with the spacing between the U-shaped openings 505. A pull rod feeding box 902 is provided on the pull rod feeding platform 901, and a travel drive mechanism 11 is provided on the back side of the pull rod feeding box 902 to drive it to move on the pull rod feeding platform 901. A push mechanism 12 is provided on the back side of the pull rod feeding platform 901 for pushing the pull rod 14 in the pull rod groove 16 forward so that the pull rod 14 passes through the third pin hole 6021 and enters the U-shaped opening 505.

[0031] Optional, see Fig.12 The pin feeding box 802 and the pull rod feeding box 902 include a cylinder, a walking wheel 9022 is installed at the lower part of the cylinder, the upper end of the cylinder is opened for loading cylindrical pins 13 or pull rods 14, and a discharge port 9021 is provided at the lower end of the cylinder. The width of the discharge port 9021 only allows one cylindrical pin 13 or pull rod 14 to leak out at a time.

[0032] Optionally, the pin distribution platform 801 and the pull rod distribution platform 901 are thickened base plates, on which pin grooves 15 or pull rod grooves 16 are formed by grinding; alternatively, the pin distribution platform 801 and the pull rod distribution platform 901 include a base plate and a plurality of fixed blocks, and the pin grooves 15 and the pull rod grooves 16 are formed by adjacent fixed blocks being arranged at intervals, and the fixed blocks are fixedly connected to the base plate by bolts.

[0033] Optionally, the travel drive mechanism 11 includes a sliding beam and a slider, the sliding beam is arranged parallel to the pin feeding platform 801 or the pull rod feeding platform 901, the slider is slidably set on the sliding beam, the slider is fixed to the back of the pin feeding box 802 or the pull rod feeding box 902, and also includes a synchronous belt 112 and a reduction motor 111, the synchronous belt 112 is fixedly connected to an active block, and the active block is fixed to the back of the feeding box.

[0034] Optionally, the sales promotion mechanism 12 includes a mounting plate 122 , a plurality of push rods 123 are arranged on the front side of the mounting plate 122 , the push rods 123 are arranged in each pin slot 15 or each pull rod slot 16 , and at least one push-pull cylinder 121 is arranged on the rear side of the mounting plate 122 .

[0035] The push rod 123 used to push the pull rod 14 has an electromagnetic buckle 124 at the front end. The electromagnetic buckle 124 is fixed to the end face of the stopper 142 of the pull rod 14 by suction, so that the push rod 123 can fix the horizontality of the pull rod 14 to prevent the front end of the pull rod 14 from escaping from the pull rod groove 16 and countersunk, resulting in the inability to enter the third pin hole 6021.

[0036] The working process of the cylindrical pin-threading mechanism 8 is as follows: before the pressure head and pressure plate are lifted, the cylindrical pin 13 is loaded into the pin feeding box 802, the reduction motor 111 drives the synchronous belt 112 to move, the synchronous belt 112 drives the active block to move, the active block pulls the pin feeding box 802 and the slider to move, and since the slider is installed on the slide beam, the pin feeding box 802 moves horizontally back and forth on the pin distribution platform 801 along the straight line specified by the slide beam; when the pin feeding box 802 moves on the pin distribution platform 801, The discharge port 9021 at the bottom of the feeding box 802 is aligned with the pin groove 15, and the cylindrical pin 13 leaks into the pin groove 15. When the pin feeding box moves from one end of the pin distribution platform 801 to the other end, all the pin grooves 15 are filled with cylindrical pins 13; the push-pull cylinder 121 pushes the mounting plate 122 to move forward, and the mounting plate 122 drives all the push rods 123 to move forward. The front end of the push rod 123 pushes the cylindrical pin 13 to move toward the mold 5, thereby pushing the cylindrical pin 13 out of the pin groove 15.

[0037] The working process of the tie rod pinning mechanism 9 is as follows: before the movable backrest 602 retreats, the tie rod feeding box 902 is loaded with the tie rod 14, and the reduction motor 111 drives the synchronous belt 112 to drive the tie rod feeding box 902 to move. Constrained by the slide beam, the tie rod feeding box 902 reciprocates horizontally on the tie rod feeding table 901. When the unloading port 9021 of the tie rod feeding box 902 is aligned with the tie rod groove 16, the tie rod 14 leaks into the tie rod groove 16, and the tie rod feeding box 902 moves from one end of the tie rod feeding table 901 to the other end. , all the tie rod grooves 16 are filled with tie rods 14; the push-pull cylinder 121 drives the mounting plate 122, and the mounting plate 122 drives the push rod 123 to move forward, and the electromagnetic buckle 124 at the front end of the push rod 123 is energized to generate magnetism, thereby being attracted and fixed to the surface of the stopper at the rear end of the tie rod 14, and the push rod 123 pushes the tie rod 14 toward the mold 5. Due to the constraint of the attraction surface, the tie rod 14 has a lifting effect, and the stopper at the front end of the tie rod 14 will not sink due to gravity, and thus it is horizontally pushed out of the tie rod groove 16 under the push of the push rod 123.

[0038] The cylindrical pin 13 and the pull rod 14 are installed by the following steps: In the forming press, the mold 5 is loaded into the gap between the backing plate 6. After the discrete wood bundle material is loaded into the mold 5, the backing plate 6 clamps the mold 5 from both sides; the main oil cylinder 201 pushes the movable beam 202 to obtain the cover plate 10 through the magnetic pressure head and the tooth groove pressure plate, and then the main oil cylinder 201 is pushed out by the stroke, and the cover plate 10 is used to provide a pressing force on the material; the cover plate 10 presses the material into the mold 5; when the upper plane of the cover plate 10 is lower than the first pin hole 504 of the mold 5, the column pin feeding box 802 of the column pin threading mechanism pushes the cylindrical pin 1 3 is filled into each column pin groove 15. In this process, the column pin groove 15 is required to be coaxial with the second pin hole 6011 on the fixed backing 601 and the first pin hole 504 on the mold 5. The push rod 123 penetrates the cylindrical pin 13 into the first pin hole 504 under the drive of the push-pull cylinder 121; the electromagnetic buckle 124 of the pressure head and pressure plate is powered off, the main oil cylinder 201 is unloaded and the pressure plate is lifted. The top surface of the cover plate 10 expands upward due to the residual mold expansion force of the material, but the cover plate 10 is pressed by the cylindrical pin 13 to offset the mold expansion force; The rod pinning mechanism 9 first moves the driving mechanism 11 to move the rod feeding box 902, and fills the rods 14 into the rod slots 16 respectively; then the rods 14 are pushed out by the pushing mechanism 12, at this time, the third pin hole 6021 of the movable backer 602 is coaxial with the U-shaped opening 505 on the mold 5, and the push rod 123 pushes the rod 14 under the drive of the push-pull cylinder 121, and the rod 14 passes through the second pin hole 6011 to reach the U-shaped opening 50 5, the electromagnetic buckle 124 is powered off to release the pull rod 14, and then the push rod 123 retreats; then the pressure head pressing plate is driven by the main oil cylinder 201 to press the pull rod 14 into the bottom of the U-shaped open groove 505; then the movable backing 602 retreats to release the clamping of the mold 5, and the mold expansion force on the side wall of the mold 5 is offset by the pull rod 14 and the stopper; finally, the pressure head is lifted, and the mold 5 is taken out from the gap of the opened backing pad 6, and the pressing process is completed. The mold 5 and the reconstructed wood block are then impregnated and heat treated together.

[0039] The spacing between the blocks 142 at both ends of the pull rod 14 determines the restraining force of the pull rod 14 on the upper opening of the mold 5. In this solution, the position of the block 142 can be adjusted by thread to set a suitable spacing of the mold 5 to ensure the tension of the left side plate 501 and the right side plate 503; alternatively, in order to facilitate the installation of the pull rod 14 and ensure that there is a strong pressure on the left side plate 501 and the right side plate 503 after the U-shaped opening 505 is pressed into place, the inner side surface of the block 142 is designed to be conical, so that the block 142 can be more conveniently put into place when the U-shaped opening 505 is pushed into, and the pressure of the block 142 on the left side plate 501 and the right side plate 503 is increased after the U-shaped opening 505 is pressed into place.

[0040] The beneficial effects of the anti-expansion mold solution of the reconstituted wood pressing mold provided by the present invention are as follows: This solution uses cylindrical pins to lock the cover plate to prevent the mold from expanding upward, and uses a pull rod to pull and lock the mold side plate to prevent the mold from expanding laterally, so as to achieve the tightening effect of the closed mold cavity formed by the mold and the cover plate on the wood; This solution prevents the cover plate from expanding before the pressure head and pressure plate are lifted, and prevents the side mold from expanding before the backing plate is retracted, to ensure that the internal pressing force of the formed wood is not relaxed during the withdrawal of the forming press, and the wood is not deformed or loosened due to residual mold expansion force, thereby ensuring the uniformity and density of the wood, avoiding situations such as excessive uniformity, insufficient stress, and cracking, and effectively improving the mechanical properties of reconstituted wood products.

[0041] The anti-expansion module of the mold in this solution is automatically installed by machinery, realizing automated production without human participation throughout the process, reducing the input of manual labor, avoiding the problem of uneven density of reconstituted wood molding caused by individual differences in manual operation, and improving product quality. This advanced technical method is suitable for promotion and use.

[0042] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present specification and its drawings are included in the scope of rights of the present invention.

Claims

1. An anti-expansion mold reconstituted wood pressing device, comprising a forming press frame (1), a pressing head (3), a pressing plate (4), a backing pad (6), a mold (5) and a cover plate (10), wherein the forming press frame (1) adopts a three-beam four-column welded frame structure, wherein the upper crossbeam (101) is used to assemble a driving assembly (2) of the pressing head and the pressing plate, and a workbench (7) is installed on the lower crossbeam (102), and the characteristics are: The mold (5) is arranged on a workbench (7), and comprises a left side plate (501), a bottom plate (502) and a right side plate (503) which are fixedly connected as one body; a cover plate (10) is arranged inside the mold (5); a reconstituted wood material is arranged in a space formed between the cover plate (10) and the mold (5); a plurality of first pin holes (504) are arranged on the upper parts of the left side plate (501) and the right side plate (503); a plurality of U-shaped openings (505) are arranged on the tops of the left side plate (501) and the right side plate (503); The backing plate (6) is divided into a fixed backing plate (601) and a movable backing plate (602), wherein the fixed backing plate (601) is arranged on the right side of the mold (5), and the movable backing plate (602) is arranged on the left side of the mold (5); Also includes: A cylindrical pin (13) is inserted into the first pin hole (504) and is used to constrain the cover plate (10) in the rising mold; A pull rod (14) is disposed in the U-shaped opening (505) and is used to constrain the left side plate (501) and the right side plate (503) in side expansion mold; A cylindrical pin-penetrating mechanism (8), arranged on the back side of the fixed backer (601), and used for installing the cylindrical pin (13) into the first pin hole (504); The pull rod pinning mechanism (9) is arranged on the back side of the movable backrest (602) and is used to install the pull rod (14) to the U-shaped opening (505).

2. The anti-expansion mold reconstituted wood pressing equipment according to claim 1 is characterized in that: The cylindrical pin (13) is a straight round rod, and its two ends are inserted into the first pin holes (504) opposite to each other on the left plate (501) and the right plate (503) of the mold (5). The cylindrical pin (13) is located on the upper side of the cover plate (10), and its two ends protrude outside the left plate (501) and the right plate (503). The pull rod (14) includes a round steel (141) and a stopper (142) fixed at both ends of the round steel (141). The pull rod (14) is arranged in the U-shaped opening (505), and the stopper (142) at both ends of the round steel (141) is located outside the left plate (501) and the right plate (503).

3. The anti-expansion mold reconstituted wood pressing equipment according to claim 1 is characterized in that: The fixed backrest (601) is fixedly connected to the workbench (7) by bolts; a groove (6022) is provided in an area of ​​the inner wall of the fixed backrest (601) corresponding to the first pin hole (504) and the U-shaped opening (505); a second pin hole (6011) is provided on a side wall of the groove (6022) corresponding to each first pin hole (504); a groove (6022) is provided in an area of ​​the inner wall of the movable backrest (602) corresponding to the first pin hole (504) and the U-shaped opening (505); a third pin hole (6021) is provided on a side wall of the groove (6022) corresponding to each U-shaped opening (505); the diameter of the third pin hole (6021) is larger than the diameter of the stopper (142); at least one short-stroke hydraulic cylinder (6023) is installed on the back of the movable backrest (602) to drive the movable backrest (602) to move forward and backward to adjust the interval between the movable backrest (602) and the fixed backrest (601).

4. The anti-expansion mold reconstituted wood pressing equipment according to claim 1 is characterized in that: The cylindrical pin-threading mechanism (8) comprises a pin distribution platform (801), a plurality of pin grooves (15) are arranged on the pin distribution platform (801), the spacing between the pin grooves (15) is consistent with the spacing between the first pin holes (504), a pin feeding box (802) is arranged on the pin distribution platform (801), a travel drive mechanism (11) is arranged on the back of the pin feeding box (802), and the travel drive mechanism (11) drives the pin feeding box (802) to move on the pin distribution platform (801); a push-pull mechanism (12) is arranged on the back side of the pin distribution platform (801), which is used to push the cylindrical pins (13) in the pin grooves (15) forward, so that the cylindrical pins (13) pass through the second pin holes (6011) and enter the first pin holes (504).

5. The anti-expansion mold reconstituted wood pressing equipment according to claim 1 is characterized in that: The pull rod pinning mechanism (9) comprises a pull rod material distribution platform (901), a plurality of pull rod grooves (16) are provided on the pull rod material distribution platform (901), the spacing between the pull rod grooves (16) is consistent with the spacing between the U-shaped openings (505), a pull rod feeding box (902) is provided on the pull rod material distribution platform (901), a travel drive mechanism (11) is provided on the back side of the pull rod feeding box (902) to drive it to move on the pull rod material distribution platform (901), and a push mechanism (12) is provided on the back side of the pull rod material distribution platform (901) for pushing the pull rod (14) in the pull rod groove (16) forward so that the pull rod (14) passes through the third pin hole (6021) and enters the U-shaped opening (505).

6. The anti-expansion mold reconstituted wood pressing equipment according to claim 4 or 5, characterized in that: The pin feeding box (802) and the pull rod feeding box (902) comprise a cylinder, a travel wheel (9022) is installed at the lower part of the cylinder, the upper end of the cylinder is open for loading cylindrical pins (13) or pull rods (14), and the lower end of the cylinder is provided with a discharge port (9021), the width of the discharge port (9021) allows only one cylindrical pin (13) or pull rod (14) to leak out at a time.

7. The anti-expansion mold reconstituted wood pressing equipment according to claim 4 or 5, characterized in that: The travel drive mechanism (11) comprises a sliding beam and a slider, the sliding beam is arranged in parallel with the column pin feeding platform (801) or the pull rod feeding platform (901), the slider is slidably arranged on the sliding beam, the slider is fixed to the back of the column pin feeding box (802) or the pull rod feeding box (902), and also comprises a synchronous belt (112) and a reduction motor (111), the synchronous belt (112) is fixedly connected to an active block, and the active block is fixed to the back of the column pin feeding box (802) or the pull rod feeding box (902).

8. The anti-expansion mold reconstituted wood pressing equipment according to claim 4 or 5, characterized in that: The sales promotion mechanism (12) comprises a mounting plate (122), a plurality of push rods (123) are arranged on the front side of the mounting plate (122), the push rods (123) are arranged in each column pin slot (15) or each pull rod slot (16), and at least one push-pull cylinder (121) is arranged on the rear side of the mounting plate (122).

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