Low-formaldehyde plywood extrusion forming device

Abstract

The utility model discloses a low-formaldehyde plywood extrusion forming device, and belongs to the technical field of hot presses. The device mainly comprises a support, side plates are fixedly connected to the two sides of the bottom of the support, first hydraulic telescopic devices are arranged on the side plates, telescopic mechanisms are arranged on the two sides of the support, and each telescopic mechanism comprises a plurality of first connecting rods and second connecting rods which are connected in a crossed mode. Rolling shafts are arranged at the two ends of the other side of the side supporting plate; a plurality of supporting plates are arranged between the two groups of telescopic mechanisms; a longitudinal sliding rail is arranged in the middle of one end of the bracket, a butt joint device is arranged on the longitudinal sliding rail; a steam box connected with the bracket is arranged on one side of the longitudinal sliding rail; according to the plate hot-pressing device, a plate can be better extruded and taken through the telescopic mechanism, and the self-locking type butt joint mechanism is arranged, so that the temperature of the supporting plate is increased, and hot-pressing work is conducted on the plate.

Description

Technical Field

[0001] This utility model belongs to the field of hot press technology, and more specifically, it relates to a low-formaldehyde plywood extrusion molding device. Background Technology

[0002] Plywood extrusion molding equipment is a key piece of equipment for the efficient production of wood composite materials. Its background technology mainly revolves around the optimization and innovation of traditional hot pressing processes. Extrusion molding technology, through a continuous and automated process, mixes wood fibers or veneers with adhesives and then directly extrudes them through molds under high pressure and high temperature, significantly shortening production time and improving material utilization.

[0003] Patent CN222309154U discloses a hot press for plywood production. It includes a base with several support rods evenly distributed on it. A top plate is fixedly mounted on the upper end of each support rod, and an auxiliary hot pressing mechanism is provided on the top plate. Several plywood hot pressing molds are evenly distributed between the support rods. While this patent solves the problem of separating the bottom plates after hydraulic pressure is applied, making plywood removal easier, when using springs, the hydraulic device encounters resistance when pressing the plywood downwards, requiring more force and higher pressure to achieve the desired pressing effect.

[0004] To address the aforementioned technical problems, this application proposes a solution. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a low-formaldehyde plywood extrusion molding device. It can better realize the extrusion and picking of the board by using a telescopic mechanism, and is equipped with a self-locking docking mechanism to raise the temperature of the support plate and perform hot pressing on the board.

[0006] The aforementioned low-formaldehyde plywood extrusion molding device includes a support frame. Side plates are fixedly connected to both sides of the bottom of the support frame, and hydraulic telescopic devices are fixedly connected to the side plates. Telescopic mechanisms are movably connected to both sides of the support frame. Each telescopic mechanism includes multiple cross-connected connecting rods 1 and 2. A side support plate is movably connected to one side of the connection between connecting rod 1 and connecting rod 2. One end of one side of the side support plate is provided with a limiting position fixed to the connection between connecting rod 1 and connecting rod 2. The other end of the side support plate is provided with a sliding groove A that facilitates sliding connection with the protrusion at the connection between connecting rod 1 and connecting rod 2. Rollers are rotatably connected to both ends of the other side of the side support plate. Multiple support plates are provided between the two sets of telescopic mechanisms. A longitudinal slide rail is fixedly connected to the middle of one end of the support frame. A docking device is slidably connected to the longitudinal slide rail. A steam box fixedly connected to the support frame is provided on one side of the longitudinal slide rail.

[0007] Preferably, the support plate has positioning grooves on both sides that cooperate with the rollers. The positioning grooves are horizontally L-shaped and have openings. Positioning posts are fixedly connected to the four corners of the upper surface of the support plate, and positioning grooves are provided at the four corners of the lower surface of the support plate. The support plate has a U-shaped cavity inside, and two mounting holes are provided at both ends of the cavity. A self-locking docking mechanism is provided in the mounting holes.

[0008] Preferably, the self-locking docking mechanism includes a fixed block fixedly connected to the inside of the support plate. One end of the fixed block is provided with a slider slidably connected to the mounting hole. The middle of the slider is a pipe, one end of which is slidably connected to the fixed block. A spring is nested on the outside of the pipe between the slider and the fixed block. One end of the spring is fixedly connected to the fixed block and the other end of the spring is fixedly connected to the slider. A limit rod is rotatably connected to one side of the fixed block. A sliding groove is provided on the same side of the slider and the fixed block. The sliding groove is heart-shaped. One end of the limit rod extends out and cooperates with the sliding groove. The two sides of the slider are provided with grooves. A retaining plate is rotatably connected in the groove. A spring is fixedly connected in the groove. One end of the spring is fixedly connected to the retaining plate. The other end of the pipe is provided with a second docking port. One end of the retaining plate has a protrusion facing the second docking port.

[0009] Preferably, one end of the docking device is provided with a first docking interface that mates with the second docking interface. The outer side of the first docking interface is provided with a limiting protrusion. There are two first docking interfaces in total. Each side of the docking device of the first docking interface is provided with an air outlet and an air inlet. The two first docking interfaces are respectively connected to the air outlet and the air inlet. The air outlet and the air inlet are respectively sealed and connected to the steam box. Each end of the docking device that contacts the longitudinal slide rail is provided with an elastic telescopic column. One end of the elastic telescopic column abuts against the groove.

[0010] Preferably, one side of the limiting protrusion abuts against one side of the card plate, and the first and second interfaces are made of rubber.

[0011] Preferably, the side plate is provided with a side plate groove, one end of the connecting rod at the bottom of the telescopic mechanism is rotatably connected to the side plate, one end of the connecting rod at the bottom of the telescopic mechanism is slidably connected to the side plate groove, and the extended end of the hydraulic telescopic device is fixedly connected to a fixing rod, which passes through the side plate groove and is fixedly connected to the connecting rod.

[0012] Preferably, a second hydraulic telescopic device is fixedly connected to the top of the bracket, and a pressing plate is fixedly connected to the extended end of the second hydraulic telescopic device.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model places the sheet material on the support plate, and then places the support plate on the telescopic mechanism. Not only can the sheet material be squeezed by the second hydraulic telescopic mechanism, but the contraction of the telescopic mechanism can also assist the second hydraulic telescopic mechanism in squeezing the sheet material. After the sheet material is squeezed, the telescopic mechanism expands and automatically separates the sheet material from the multiple support plates, making it easier to pick up the sheet material.

[0015] 2. In this utility model, the support plate is hollow and has a self-locking docking mechanism on one side, which can be sealed and fixed with the docking device. Hot air from the steam box is introduced into the support plate to rapidly heat it up and perform hot pressing on the plate. Of course, the fixing and disassembly of the self-locking docking mechanism and the docking device are also very convenient. Simply push the support plate inward, and the clamping plate will automatically lock the limiting protrusion. Push it inward again, and the clamping plate will automatically separate from the limiting protrusion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0019] Figure 4 This is a schematic diagram of the structure of this utility model without the support plate;

[0020] Figure 5 for Figure 4 A structural diagram of section B;

[0021] Figure 6 This is a schematic diagram of the support structure;

[0022] Figure 7 This is a structural schematic diagram of the support plate;

[0023] Figure 8 This is a disassembled diagram of the docking device and the self-locking docking mechanism;

[0024] Figure 9 This is a schematic diagram of a self-locking docking mechanism;

[0025] Figure 10 for Figure 9 A structural diagram of section C;

[0026] Figure 11 This is a structural schematic diagram of the side support plate;

[0027] Figure 12 This is a structural diagram showing the flow direction of steam inside the support plate.

[0028] In the diagram, 1. Bracket; 101. Side plate; 1011. Side plate groove; 102. Longitudinal slide rail; 1021. Groove; 2. Hydraulic telescopic device one; 201. Fixed rod; 3. Telescopic mechanism; 301. Connecting rod one; 302. Connecting rod two; 303. Side support plate; 3031. Limiting device; 3032. Groove A; 3033. Roller; 4. Support plate; 401. Positioning post; 402. Positioning groove; 403. Installation. 5. Extrusion plate; 6. Hydraulic telescopic device II; 7. Steam box; 8. Docking device; 801. Air outlet; 802. Air inlet; 803. Elastic telescopic column; 804. Docking interface I; 805. Limiting protrusion; 9. Self-locking docking mechanism; 901. Fixing block; 902. Limiting rod; 903. Sliding block; 904. Slide groove; 905. Docking interface II; 906. Spring I; 907. Clamping plate; 908. Spring II. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figures 1 to 12As shown, a low-formaldehyde plywood extrusion molding device is used to extrude and mold plywood. It includes a support 1, with side plates 101 fixedly connected to both sides of the bottom of the support 1. A hydraulic telescopic device 2 is fixedly connected to the side plates 101. Telescopic mechanisms 3 are movably connected to both sides of the support. The telescopic mechanisms 3 include multiple cross-connected connecting rods 301 and 302. A side support plate 303 is movably connected to one side of the connection between connecting rod 301 and connecting rod 302. One end of one side of the side support plate 303 is provided with a connection point to the connecting rods. A limiting 3031 is fixed at the connection point of connecting rod 301 and connecting rod 302. A sliding groove A3032 is provided on the other end of the same side of the side support plate 303 to facilitate sliding connection with the protrusion at the connection point of connecting rod 301 and connecting rod 302. Rollers 3033 are rotatably connected to both ends of the other side of the side support plate 303. Multiple support plates 4 are provided between the two sets of telescopic mechanisms 3. The function of the rollers 3033 is to allow the support plates 4 placed on top to slide easily and more readily into the positioning grooves 402 provided on the support plates 4. A longitudinal slide rail 102 is fixedly connected to the middle of one end of the bracket 1. A docking device 8 is slidably connected to the longitudinal slide rail 102. A steam box 7 is fixedly connected to the bracket 1 on one side of the longitudinal slide rail 102. The steam box 7 transfers steam to the interior of the support plate 4 to heat the interior of the support plate 4 and perform hot pressing treatment on the plywood.

[0032] The support plate 4 has positioning grooves 402 on both sides that cooperate with the rollers 3033. The positioning grooves 402 are horizontally L-shaped and have openings. The rollers 3033 on the side support plate 303 enter the positioning grooves 402 through the openings and then slide further into the positioning grooves 402. When the pressing plate 5 presses down on the support plate 4, the telescopic mechanism 3 can also simultaneously press the support plate 4 and the plywood on it, preventing the support plate 4 from easily slipping off the rollers 3033. After pressing is completed, the telescopic mechanism 3 expands to separate the support plate 4, making it convenient for workers to transport the plywood. Positioning posts 401 are fixedly connected to the four corners of the upper end face of the support plate 4, and positioning grooves are provided at the four corners of the lower end face of the support plate 4. When the support plates 4 are pressed against each other, the positioning posts 401 will enter the positioning grooves to prevent the plywood from being squeezed out of the support plate 4 due to excessive pressure during pressing. The support plate 4 has a U-shaped cavity inside, which forms a loop to facilitate the flow of steam from the inside to every corner, heating the support plate 4 and hot-pressing the plywood. Two mounting holes 403 are provided at both ends of the cavity, and each mounting hole 403 contains a matching self-locking docking mechanism 9.

[0033] The self-locking docking mechanism 9 includes a fixed block 901 fixedly connected to the inside of the support plate 4. One end of the fixed block 901 is provided with a slider 903 slidably connected to the mounting hole 403. The middle of the slider 903 is a pipe, one end of which is slidably connected to the fixed block 901. A spring 906 is nested and connected to the outside of the pipe between the slider 903 and the fixed block 901. One end of the spring 906 is fixedly connected to the fixed block 901, and the other end of the spring 906 is fixedly connected to the slider 903. A limit rod 902 is rotatably connected to one side of the fixed block 901. A sliding groove 904 is provided on the same side of the slider 903 and the fixed block 901. The sliding groove 904 is heart-shaped. One end of the limit rod 902 slides inside the sliding groove to realize the extension and retraction of the slider 903. One end of the limiting rod 902 extends and engages with the slide groove 904. The slider 903 has grooves on both sides, and a retaining plate 907 is rotatably connected in the groove. A second spring 908 is fixedly connected in the groove. One end of the second spring 908 is fixedly connected to the retaining plate 907. The other end of the pipe has a second interface 905. One end of the retaining plate 907 has a protrusion facing the second interface 905. When the retaining plate 907 is disengaged from the support plate 4, the retaining plate 907 is subjected to the elastic force of the second spring 908 and unfolds to both sides. When the support plate 4 is pressed inward, the retaining plate 907 is pressed inward by the support plate 4 and contracts inward, covering the limiting protrusion 805. The first interface 804 and the second interface 905 are then connected.

[0034] One end of the docking device 8 is provided with a first docking interface 804 that mates with the second docking interface 905. The outer side of the first docking interface 804 is provided with a limiting protrusion 805. There are two first docking interfaces 804. The docking device 8 on the opposite side of the first docking interface 804 is provided with an air outlet 801 and an air inlet 802 respectively. The two first docking interfaces 804 are connected to the air outlet 801 and the air inlet 802 respectively. The air outlet 801 and the air inlet 802 are respectively sealed and connected to the steam box 7. The docking device 8 is provided with an elastic telescopic column 803 at each end that contacts the longitudinal slide rail 102. One end of the elastic telescopic column 803 abuts against the groove 1021. Its main function is that when the support plate 4 moves out, the docking device 8 can remain in the original position and wait for the next support plate 4 to dock with the docking device 8.

[0035] One side of the limiting protrusion 805 abuts against the side of the card plate 907. The first interface 804 and the second interface 905 are made of rubber, which can better seal the seal.

[0036] The side plate 101 is provided with a side plate slide groove 1011. One end of the connecting rod 301 at the bottom of the telescopic mechanism 3 is rotatably connected to the side plate 101. One end of the connecting rod 302 at the bottom of the telescopic mechanism 3 is slidably connected to the side plate slide groove 1011. The extended end of the hydraulic telescopic device 2 is fixedly connected to a fixing rod 201. The fixing rod 201 passes through the side plate slide groove 1011 and is fixedly connected to the connecting rod 302. The telescopic mechanism 3 is telescopically extended by the extension and retraction of the hydraulic telescopic device 2.

[0037] A hydraulic telescopic device 2 6 is fixedly connected to the top of the bracket 1. An extrusion plate 5 is fixedly connected to the protruding end of the hydraulic telescopic device 2 6. The extension and retraction of the hydraulic telescopic device 2 6 controls the extension and retraction of the extrusion plate 5, which extrudes the plywood on the support plate 4.

[0038] Those skilled in the art can use existing technologies they possess, such as installing appropriate mechanical limit switches or photoelectric sensors, to limit the specified positions of each actuator during the following operation process; to achieve automated operation, this utility model can use numerical control technology or PLC to control the actions of each actuator.

[0039] Working process: Remove the support plate 4, place the plate to be hot-pressed on the support plate 4, and after placement, use a forklift to lift the support plate 4 with the plate and place it on the roller 3033 of the bottom side support plate 303. Move it slowly inward. When the rollers 3033 on both sides are respectively inserted into the positioning groove 402 at the bottom of the support plate 4, move it inward until the rollers 3033 enter the positioning groove 402. At the same time, the second docking interface 905 in the self-locking docking mechanism 9 inside the mounting hole 403 connects with the first docking interface 804. Then push the support plate 4 inward. The clamping plates 907 on both sides of the fixing block 901 clamp the limiting protrusion 805 on the first docking interface 804. The limiting rod 902 moves to the top of the slide groove 904. This ensures a stable connection between the docking device 8 and the self-locking docking mechanism 9. At this point, high-temperature steam from the steam box 7 enters the support plate 4 through the air inlet 802 and flows out through the air outlet 801, raising the temperature of the support plate 4. The support plate 4 is then placed sequentially on all the side support plates 303. The second hydraulic telescopic device is activated, causing the extrusion plate 5 to compress the material on the support plate 4. Simultaneously, the first hydraulic telescopic device 2 pushes the telescopic mechanism 3, causing it to contract synchronously. This ensures that the material on the support plate 4 receives sufficient thermal compression. During compression, the positioning pins 401 on the lower support plate 4 enter the positioning grooves on the upper support plate 4, preventing the material from moving during compression.

[0040] After hot pressing is completed, close the steam outlet valve on the steam box 7. First, the hydraulic telescopic device 2 6 lifts the extrusion plate 5, and then the hydraulic telescopic device 1 2 retracts, separating the different support plates 4 to facilitate the removal of the sheet material from the support plate 4. After separation, the forklift's front fork gently pushes the support plate 4 inward, causing the locking plate 907 on the self-locking docking mechanism 9 to separate from the limiting protrusion 805 on the docking device 8. Then, the forklift moves the support plate 4 backward, removing the roller 3033 from the positioning groove 402. Finally, the support plate 4 and the sheet material on it are moved to the sheet material placement area, completing the operation.

[0041] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-formaldehyde plywood extrusion molding apparatus, comprising a support frame (1), characterized in that: The bracket (1) has side plates (101) fixedly connected to both sides of its bottom. A hydraulic telescopic device (2) is fixedly connected to the side plates (101). A telescopic mechanism (3) is movably connected to both sides of the bracket. The telescopic mechanism (3) includes multiple cross-connected connecting rods (301) and connecting rods (302). A side support plate (303) is movably connected to one side of the connection between the connecting rods (301) and (302). One end of one side of the side support plate (303) is provided with a limit (3031) fixed to the connection between the connecting rods (301) and (302). The side support plate (303) has a groove A (3032) at the other end of the same side, which facilitates sliding connection with the protrusion at the connection point of connecting rod one (301) and connecting rod two (302). Rollers (3033) are rotatably connected to both ends of the other side of the side support plate (303). Multiple support plates (4) are provided in the middle between the two sets of telescopic mechanisms (3). A longitudinal slide rail (102) is fixedly connected to the middle of one end of the bracket (1). A docking device (8) is slidably connected to the longitudinal slide rail (102). A steam box (7) is fixedly connected to the bracket (1) on one side of the longitudinal slide rail (102).

2. The low-formaldehyde plywood extrusion molding apparatus according to claim 1, characterized in that: The support plate (4) has positioning grooves (402) on both sides that cooperate with the roller (3033). The positioning grooves (402) are horizontally "L" shaped and have openings. Positioning posts (401) are fixedly connected to the four corners of the upper end face of the support plate (4). Positioning grooves are provided at the four corners of the lower end face of the support plate (4). A "U" shaped cavity is provided inside the support plate (4). Two mounting holes (403) are provided at both ends of the cavity. A self-locking docking mechanism (9) is provided in the mounting hole (403).

3. The low-formaldehyde plywood extrusion molding apparatus according to claim 2, characterized in that: The self-locking docking mechanism (9) includes a fixing block (901) fixedly connected to the inside of the support plate (4). One end of the fixing block (901) is provided with a slider (903) slidably connected to the mounting hole (403). The middle of the slider (903) is a pipe, one end of which is slidably connected to the fixing block (901). A spring (906) is nested on the outside of the pipe between the slider (903) and the fixing block (901). One end of the spring (906) is fixedly connected to the fixing block (901), and the other end of the spring (906) is fixedly connected to the slider (903). The fixing block (901) rotates on one side. The movable connection has a limiting rod (902). The slider (903) and the fixed block (901) are provided with a sliding groove (904) on the same side. The sliding groove (904) is heart-shaped. The end of the limiting rod (902) on one side is engaged with the sliding groove (904). The slider (903) has grooves on two sides. A retaining plate (907) is rotatably connected in the groove. A second spring (908) is fixedly connected in the groove. One end of the second spring (908) is fixedly connected to the retaining plate (907). The other end of the pipe is provided with a second interface (905). One end of the retaining plate (907) is provided with a protrusion facing the second interface (905).

4. The low-formaldehyde plywood extrusion molding apparatus according to claim 1, characterized in that: One end of the docking device (8) is provided with a docking interface (804) that cooperates with the docking interface (905). The docking interface (804) is provided with a limiting protrusion (805) on the outside. There are two docking interfaces (804). The docking device (8) opposite to the docking interface (804) is provided with an air outlet (801) and an air inlet (802). The two docking interfaces (804) are respectively connected to the air outlet (801) and the air inlet (802). The air outlet (801) and the air inlet (802) are respectively sealed and connected to the steam box (7). The docking device (8) and the longitudinal slide rail (102) are each provided with an elastic telescopic column (803). One end of the elastic telescopic column (803) abuts against the groove (1021).

5. The low-formaldehyde plywood extrusion molding apparatus according to claim 4, characterized in that: The limiting protrusion (805) protrudes and abuts against the side of the card plate (907), and the first interface (804) and the second interface (905) are made of rubber.

6. The low-formaldehyde plywood extrusion molding apparatus according to claim 1, characterized in that: The side plate (101) is provided with a side plate groove (1011). One end of the connecting rod (301) at the bottom of the telescopic mechanism (3) is rotatably connected to the side plate (101). One end of the connecting rod (302) at the bottom of the telescopic mechanism (3) is slidably connected to the side plate groove (1011). The extended end of the hydraulic telescopic device (2) is fixedly connected to a fixing rod (201). The fixing rod (201) passes through the side plate groove (1011) and is fixedly connected to the connecting rod (302).

7. The low-formaldehyde plywood extrusion molding apparatus according to claim 1, characterized in that: The top of the bracket (1) is fixedly connected to a hydraulic telescopic device 2 (6), and the extended end of the hydraulic telescopic device 2 (6) is fixedly connected to a pressing plate (5).

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