High-efficiency hot press molding device and molding process for cedar homogeneous plate

Abstract

The invention relates to the technical field of hot-press forming devices, and discloses an efficient hot-press forming device and process for a cedar homogeneous plate, the efficient hot-press forming device comprises a rack, two hydraulic cylinders are mounted on the rack, the output ends of the two hydraulic cylinders are fixedly connected with a pressing plate, an upper die is fixedly mounted on the bottom surface of the pressing plate, and a lower die is mounted on the rack; the rolling assembly is used for rolling and flattening the plate; the positioning assembly is used for centering and positioning the plate; and the sealing assembly is used for sealing a gap between the upper die and the lower die during hot pressing. Through the arrangement of the calendaring assembly, the two pressing rollers roll the surface of the plate from the middle to the two sides before the upper die makes contact with the plate, so that the local protruding and bulging parts are flattened, when the upper die makes contact with the plate, the surface of the plate can keep certain flatness, and it is ensured that stress is uniform during hot pressing.

Description

Technical Field

[0001] The present invention relates to the technical field of hot pressing forming devices, and particularly relates to an efficient hot pressing forming device and forming process for fragrant cedar homogeneous boards. Background Art

[0002] Fragrant cedar homogeneous boards are the product of the combination of natural wood and modern technology. They not only retain the texture and environmental friendliness of solid wood but also solve the defects of traditional wood through the homogenization process. They are suitable for mid- to high-end scenarios with high requirements for stability and aesthetics. With the popularization of the formaldehyde-free glue technology, their application prospects in the fields of customized furniture and environmental protection decoration are broad. Since arc-shaped furniture is relatively popular in customized furniture now, some fragrant cedar homogeneous boards need to be hot pressed and formed again. An arc-shaped mold is used to hot press the fragrant cedar homogeneous board into an arc-shaped board to meet the processing requirements of arc-shaped customized furniture.

[0003] Chinese Patent CN219381335U discloses "a hot pressing forming machine for sheet production", including a hot press main body. Both sides of the upper outer surface of the hot press main body are fixedly connected with cylinders. The cylinders penetrate through the upper outer surface of the inner wall of the hot press main body. The middle part of the upper outer surface of the hot press main body is detachably connected with a motor. The lower end of the cylinder is slidably connected with a guide rod. A heating plate is arranged on the lower outer surface of the guide rod. The lower outer surface of the inner wall of the hot press main body is fixedly connected with a placement plate. An activity cavity is opened in the inner wall of the placement plate. A cooling component is arranged inside the placement plate. For the hot pressing forming machine for sheet production described in this patent, through the arranged cooling component, it can effectively cool the finished product after hot pressing, improve the working efficiency, reduce the risk of scalding when workers take the finished product, and can also facilitate the disassembly and installation of the heating plate, saving the replacement time and improving the efficiency.

[0004] However, in the prior art, there are the following problems: When the prior art uses an arc-shaped mold to hot press and form a sheet, since operations such as glue coating and lamination need to be carried out in advance before hot pressing the sheet, multiple thin sheets are laminated into a sheet. During the glue coating and lamination process, the situation of local bulging on the surface of the sheet may occur due to reasons such as deformation of the thin sheet and accumulation of the adhesive. When the sheet is hot pressed, due to local bulging on the surface, the surface stress is uneven, affecting the appearance quality after forming. Summary of the Invention

[0005] The purpose of the present invention is to provide an efficient hot pressing forming device and forming process for fragrant cedar homogeneous boards to solve the above problems, and to overcome the defect that in the prior art, local bulging may occur during the glue coating and lamination of the sheet, resulting in uneven surface stress when the sheet is hot pressed, as described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions: An efficient hot pressing and forming device for a fragrant cedar homogeneous board provided by the present invention includes a frame, two hydraulic cylinders are installed on the frame, the output ends of the two hydraulic cylinders are fixedly connected with a pressing plate, the bottom surface of the pressing plate is fixedly installed with an upper mold, and a lower mold is installed on the frame; it also includes a rolling component for rolling and flattening the board; a positioning component for centering and positioning the board; a sealing component for sealing the gap between the upper mold and the lower mold during hot pressing; the rolling component includes two rotating shafts, the outer walls of the two rotating shafts are respectively fixedly connected with rolling rollers, both ends of the rotating shafts are respectively rotatably connected with connecting blocks, the connecting blocks are fixedly connected with sliding shafts and pulley seats, and two guiding blocks are respectively fixedly connected to the outer walls of both ends of the lower mold, and elastic telescopic rods are respectively fixedly installed on the four guiding blocks, and a groove rod is fixedly connected to the two elastic telescopic rods at the same end of the lower mold, and slide rails are respectively fixedly installed on the outer walls of both ends of the upper mold.

[0007] Preferably, four guiding rods are fixedly connected to the bottom surface of the pressing plate, the four guiding rods are respectively located at the four corners of the bottom surface of the pressing plate, guiding holes are respectively provided on the four guiding blocks, and the four guiding rods respectively penetrate and slide through the guiding holes of the four guiding blocks, and high-frequency heating devices are respectively arranged in the upper mold and the lower mold.

[0008] Preferably, both rolling rollers are located below the upper mold, the two rolling rollers are arranged in a mirror image, a straight groove is provided on the groove rod, and the two sliding shafts on the connecting blocks at both ends of the rotating shaft respectively slide in the straight grooves of the two groove rods, and the two pulley seats on the connecting blocks at both ends of the rotating shaft are respectively slidably connected to the two slide rails through pulley groups.

[0009] Preferably, a toothed disc is fixedly connected to the outer wall of one end of the rotating shaft, a group of short shafts are respectively fixedly installed on the outer walls of both ends of the upper mold, and the two toothed discs are respectively meshed with the two groups of short shafts.

[0010] Preferably, the positioning component includes two sliding rods, the bottom parts of the two sliding rods are respectively fixedly connected with two sliders, four sliding grooves are provided on the lower mold, and the four sliders are respectively slidably installed in the four sliding grooves of the lower mold, and a positioning plate is slidably connected to the sliding rods, and the two positioning plates are arranged in a mirror image.

[0011] Preferably, convex rods are respectively fixedly connected to both ends of the sliding rod, a dial shaft is fixedly connected to the end of the convex rod away from the sliding rod, groove plates are respectively fixedly connected to the outer walls of the four guiding rods, inclined grooves are provided on the groove plates, and the four dial shafts respectively slide in the inclined grooves of the four groove plates.

[0012] Preferably, two nut blocks are fixedly connected to the sliding rod, and two screw rods are rotatably connected to the positioning plate. The four screw rods are respectively threadedly connected to the four nut blocks.

[0013] Preferably, the sealing assembly includes a sealing frame. Two installation grooves are provided on the lower mold. The sealing frame is vertically and slidably connected in the two installation grooves of the lower mold. An inclined surface block is fixedly connected to the slider. The four inclined surface blocks are in sliding contact with the bottom outer wall of the sealing frame during movement. The sealing frame is in fit with the bottom edge of the upper mold during movement.

[0014] Preferably, the sealing frame is hollow. A plurality of air holes are provided inside the sealing frame. Four air bags are fixedly installed on the lower mold. The four air bags are respectively located at the four corners of the top surface of the lower mold. The pressing plate presses the four air bags during movement. Four air pipes are respectively fixedly connected to the four air bags. One ends of the four air pipes away from the air bags are all connected to the sealing frame.

[0015] An efficient hot pressing forming process for fragrant cedar homogeneous board includes the following steps: Step 1: Raw material preparation and pretreatment. Use a high-precision band saw to cut the log into thin boards with uniform specifications, and finely polish the surface of the thin boards through a polishing device to ensure that the thin boards reach the best pretreatment state; Step 2: Glue application. According to the material characteristics of fragrant cedar and the requirements of the finished product, accurately prepare the composition and viscosity of the adhesive, and use an automatic glue application device to achieve quantitative and uniform spraying of the adhesive. After the glue application is completed, quickly transport it to the hot pressing mechanism; Step 3: Lamination. Stack the thin boards layer by layer in the designed order to form a complete board, and pre-press the board to initially cure the adhesive and fix the shape of the board; Step 4: Hot pressing. Transport the board to the lower mold, start the high-frequency heating devices in the upper mold and the lower mold. After the upper mold and the lower mold are preheated, the upper mold moves down to hot press the board. After the board is compacted, it enters the pressure holding stage; Step 5: Demolding. After the hot pressing is completed, lift the upper mold, remove the formed arc-shaped board, and perform surface treatment and quality inspection on the arc-shaped board.

[0016] The beneficial effects are as follows: 1. The high-efficiency hot pressing and forming device for the scented cedar homogeneous board, through the setting of the rolling component, enables the two pressing rollers to roll the surface of the board from the middle to both sides before the upper die contacts the board, thereby flattening the locally bulged parts, ensuring that when the upper die contacts the board, the surface of the board can maintain a certain flatness, ensuring uniform force during hot pressing, and through rolling, the adhesive in the board can be extruded evenly, avoiding the situation of bulging caused by excessive glue in local areas; through the cooperation of the two toothed discs and the two groups of short shafts, the two pressing rollers can rotate while moving towards both sides on the surface of the board, thereby increasing the contact area with the surface of the board, enabling the two pressing rollers to continuously rub the surface of the board with the surface, forming a tensile force towards both sides on the surface of the board, making the surface of the board more flat, and avoiding wrinkles at the bending center of the top surface of the board when the board is bent under the pressure of the upper die, thereby affecting the appearance quality.

[0017] 2. The high-efficiency hot pressing and forming device for the scented cedar homogeneous board, through the setting of the positioning component, enables the two positioning plates to play a role in positioning the board, and as the board deforms, the two positioning plates can gather synchronously, continuously maintaining the centering positioning effect on the board, avoiding the situation of skewing during the placement and hot pressing of the board; through the setting of the four screws, the staff can rotate the four screws to adjust the distance between the two positioning plates, so as to match boards of different widths.

[0018] 3. The high-efficiency hot pressing and forming device for the scented cedar homogeneous board, through the setting of the sealing component, enables the sealing frame to move up a certain distance when the upper die and the lower die clamp the board, sealing the gap formed between the upper die and the lower die, thereby playing a certain heat preservation effect, avoiding continuous heat dissipation from the gap between the upper die and the lower die during hot pressing, thereby increasing the energy consumption of the high-frequency heating device, and at the same time, it will also cause the ambient temperature around the frame to rise, causing discomfort to the operators; through the setting of the four air bags, after the sealing frame moves up, the air in the sealing frame is injected into the gap between the upper die and the lower die through multiple air holes, thereby improving the permeability of the adhesive, and further enhancing the overall stability of the board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the guide rod of the present invention; Figure 3 It is a schematic structural diagram of the calendering component of the present invention; Figure 4 It is a schematic structural diagram of the connecting block of the present invention; Figure 5 It is a schematic structural diagram of the toothed disk of the present invention; Figure 6 It is a schematic structural diagram of the positioning component of the present invention; Figure 7 It is a schematic structural diagram of the positioning plate of the present invention; Figure 8 It is a schematic structural diagram of the sealing component of the present invention; Figure 9 It is an exploded view of the sealing frame and the lower die of the present invention; Figure 10 It is a schematic structural diagram of the sealing frame of the present invention; Figure 11 It is a schematic structural diagram of the inclined plane block of the present invention; Figure 12 It is a schematic structural diagram of the airbag of the present invention; Figure 13 It is a schematic structural diagram of the air hole of the present invention.

[0021] Explanation of the reference numerals is as follows: 1, frame; 2, pressing plate; 3, upper die; 4, lower die; 5, calendering component; 51, rotating shaft; 52, calendering roll; 53, connecting block; 54, sliding shaft; 55, elastic telescopic rod; 56, groove rod; 57, pulley seat; 58, slide rail; 59, toothed disk; 510, short shaft; 6, positioning component; 61, slider; 62, sliding rod; 63, positioning plate; 64, convex rod; 65, dial shaft; 66, groove plate; 67, nut block; 68, screw rod; 7, sealing component; 71, sealing frame; 72, inclined plane block; 73, air hole; 74, airbag; 75, air pipe; 8, guiding rod; 9, guiding block; 10, hydraulic cylinder. Detailed implementation manners

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope protected by the present invention.

[0023] Embodiment 1 Please refer to Figure 1 - Figure 2, An efficient hot pressing forming device for incense cedar homogeneous board, including a frame 1, on which two hydraulic cylinders 10 are installed. The output ends of the two hydraulic cylinders 10 are fixedly connected with a pressing plate 2. The hydraulic cylinders 10 on the frame 1 can drive the pressing plate 2 to move up or down. The bottom surface of the pressing plate 2 is fixedly installed with an upper mold 3. A lower mold 4 is installed on the frame 1. High-frequency heating devices are respectively arranged in the upper mold 3 and the lower mold 4. The high-frequency heating device is a prior art, and its specific structure and working principle will not be elaborated here. After the high-frequency heating device is started, it can heat the contact surfaces of the upper mold 3 and the lower mold 4 with the board to a set temperature, so as to realize the hot pressing operation.

[0024] Furthermore, please refer to Figure 1 - Figure 4 , it also includes a rolling component 5 for rolling and flattening the board; the rolling component 5 includes two rotating shafts 51, and rolling rollers 52 are respectively fixedly connected to the outer walls of the two rotating shafts 51. The two ends of the rotating shafts 51 are respectively rotatably connected with connecting blocks 53. A sliding shaft 54 and a pulley seat 57 are fixedly connected to the connecting blocks 53. Two guiding blocks 9 are respectively fixedly connected to the outer walls of the two ends of the lower mold 4. Elastic telescopic rods 55 are respectively fixedly installed on the four guiding blocks 9. A groove rod 56 is fixedly connected to the two elastic telescopic rods 55 located at the same end of the lower mold 4. Slide rails 58 are respectively fixedly installed on the outer walls of the two ends of the upper mold 3. The contact surfaces of the upper mold 3 and the lower mold 4 with the board are arc-shaped. The outer shape of the slide rail 58 is similar to the bottom edge of the upper mold 3. The two rolling rollers 52 are both located below the upper mold 3. The two rolling rollers 52 are arranged in a mirror image. A straight groove is arranged on the groove rod 56. The two sliding shafts 54 on the connecting blocks 53 at the two ends of the rotating shaft 51 are respectively slidably connected with the straight grooves of the two groove rods 56. The two pulley seats 57 on the connecting blocks 53 at the two ends of the rotating shaft 51 are respectively slidably connected with the two slide rails 58 through pulley groups. While the pulley seats 57 on the connecting blocks 53 slide on the slide rails 58, the sliding shafts 54 on the connecting blocks 53 also slide in the straight grooves of the groove rods 56 (as shown in Figure 4 ), so as to achieve the effect that the four connecting blocks 53 can drive the two rotating shafts 51 to move towards both sides along the arc-shaped bottom edge of the upper mold 3. Therefore, after the two rolling rollers 52 move down and apply a certain pressure to the board, they can stop moving down, and then move towards both sides as the upper mold 3 moves down, so that the two rolling rollers 52 roll the surface of the board from the middle to both sides, thereby flattening the locally convex and bulging parts, so that when the upper mold 3 contacts the board, the surface of the board can maintain a certain flatness, ensuring uniform force during hot pressing.

[0025] Even further, please refer to Figure 1 - Figure 2, four guide rods 8 are fixedly connected to the bottom surface of the pressing plate 2. The four guide rods 8 are respectively located at the four corners of the bottom surface of the pressing plate 2. Guide holes are respectively provided on the four guide blocks 9. The four guide rods 8 respectively penetrate and are slidably connected to the guide holes of the four guide blocks 9. When the pressing plate 2 moves up and down, the four guide rods 8 on the pressing plate 2 respectively slide in the guide holes of the four guide blocks 9. The four guide blocks 9 play a limiting role on the four guide rods 8, so that the cooperation between the four guide rods 8 and the four guide blocks 9 increases the stability of the pressing plate 2 when moving up and down, and prevents the upper die 3 from tilting and shifting.

[0026] Furthermore, please refer to Figure 4 - Figure 5 , a toothed disk 59 is fixedly connected to the outer wall of one end of the rotating shaft 51. A set of short shafts 510 are respectively fixedly installed on the outer walls of both ends of the upper die 3. The two toothed disks 59 are respectively meshed with the two sets of short shafts 510. The toothed disk 59 can be regarded as a sprocket, and a set of short shafts 510 can be regarded as multiple core shafts on a chain. Therefore, when the toothed disk 59 moves following the rotating shaft 51, it can rotate through the meshing action of a set of short shafts 510, so that the two rotating shafts 51 can drive the two pressure rollers 52 to rotate while moving (as shown in Figure 5 ), the two pressure rollers 52 can increase the contact area with the surface of the plate by rotating, so that the two pressure rollers 52 continuously rub the surface of the plate with their surfaces, forming a force that pulls the plate surface to both sides, making the plate surface smoother. By stretching the plate surface from the middle to both sides in advance, it can be avoided that when the plate is bent under the pressure of the upper die 3, wrinkles occur at the center of the bent top surface of the plate, thus affecting the appearance quality.

[0027] In addition, please refer to Figure 1 、 Figure 6 - Figure 7 , a positioning assembly 6 for centering and positioning the plate; the positioning assembly 6 includes two slide rods 62, and two sliders 61 are respectively fixedly connected to the bottoms of the two slide rods 62 (as shown in Figure 7 ), four sliding grooves are provided on the lower die 4, and the four sliders 61 are respectively slidably installed in the four sliding grooves of the lower die 4. A positioning plate 63 is slidably connected to the slide rod 62. The two positioning plates 63 are mirror images of each other. When placing the plate, the plate is placed between the two positioning plates 63, so that the two positioning plates 63 are closely attached to both sides of the plate, playing a role in positioning the plate and preventing the plate from being placed obliquely and affecting the hot pressing operation.

[0028] In addition, please refer to Figure 6 - Figure 7, convex rods 64 are fixedly connected to both ends of the sliding rod 62 respectively. A shifting shaft 65 is fixedly connected to the end of the convex rod 64 away from the sliding rod 62. Grooved plates 66 are fixedly connected to the outer walls of the four guide rods 8 respectively. Oblique slots are provided on the grooved plates 66. The four shifting shafts 65 are respectively slidably connected to the oblique slots on the four grooved plates 66. When the grooved plates 66 move downward, they can drive the shifting shafts 65 to move towards the bending center of the lower die 4 by means of the oblique slots. When the four grooved plates 66 move downward, they can drive the two sliding rods 62 to move towards each other on the lower die 4 by the cooperation of the four shifting shafts 65 and the four convex rods 64. When the sliding rods 62 move, they drive the positioning plates 63 to move synchronously. When the plate is pressed by the upper die 3, the two sides of the plate will gradually gather towards the middle, and the two positioning plates 63 can move towards the middle synchronously with the two sides of the plate, so that the two positioning plates 63 can continuously center the plate. When the plate is about to be completely bent, the plate enters the gap between the arc-shaped parts of the upper die 3 and the lower die 4, and the two sides of the plate are separated from the two positioning plates 63.

[0029] It should be noted that, please refer to Figure 7 、 Figure 11 , two nut blocks 67 are fixedly connected to the sliding rod 62, and two screw rods 68 are rotatably connected to the positioning plate 63. The four screw rods 68 are respectively threadedly connected to the four nut blocks 67. The staff can rotate the two screw rods 68 above the sliding rod 62. When the screw rods 68 rotate, they can adjust the distance between the positioning plate 63 and the nut blocks 67 by means of the threaded connection relationship, so as to achieve the effect that rotating the four screw rods 68 can adjust the distance between the two positioning plates 63, so as to match plates of different widths.

[0030] It should be explained that, please refer to Figure 1 、 Figure 8 - Figure 11 , a sealing assembly 7, which is used to seal the gap between the upper die 3 and the lower die 4 during hot pressing; the sealing assembly 7 includes a sealing frame 71. Two installation grooves are provided on the lower die 4. The sealing frame 71 is vertically slidably connected in the two installation grooves of the lower die 4 (as shown in Figure 10 and Figure 12 ), a bevel block 72 is fixedly connected to the slider 61 (as shown in Figure 11 ), the four bevel blocks 72 are in sliding contact with the bottom outer wall of the sealing frame 71 during movement, the sealing frame 71 is in contact with the bottom edge of the upper die 3 during movement. When the two sliding rods 62 move towards each other and are about to move in place, the four bevel blocks 72 can be inserted into the bottom of the sealing frame 71, and the sealing frame 71 can be jacked up by the bevels of the four bevel blocks 72, so that the sealing frame 71 moves up a certain distance (as shown in Figure 10 、 Figure 11As shown in the figure, after the upper die 3 and the lower die 4 press the sheet material, the sealing frame 71 moves upward to seal the gap formed between the upper die 3 and the lower die 4, thus achieving a certain heat preservation effect and reducing the energy consumption of the high-frequency heating device by reducing heat loss.

[0031] It is worth mentioning that, please refer to Figure 8 、 Figure 12 - Figure 13 The sealing frame 71 is hollow, and a plurality of air holes 73 are opened on the inner side of the sealing frame 71. Four air bags 74 are fixedly installed on the lower die 4, and the four air bags 74 are respectively located at the four corners of the top surface of the lower die 4. During the movement of the pressing plate 2, the four air bags 74 are squeezed. After the air bags 74 are separated from the pressing plate 2, they can reset themselves. Four air pipes 75 are respectively fixedly connected to the four air bags 74. The air pipes 75 are made of flexible materials. One end of the four air pipes 75 far from the air bags 74 is connected to the sealing frame 71. After the pressing plate 2 squeezes the four air bags 74, the four air bags 74 respectively transport air to the sealing frame 71 through the four air pipes 75. After the sealing frame 71 rises, air is injected into the sealing frame 71. When the upper die 3 and the lower die 4 press the sheet material tightly, the sealing frame 71 moves upward and plays a sealing role. At the same time, the air in the sealing frame 71 is injected into the gap between the upper die 3 and the lower die 4 through a plurality of air holes 73. The air can push the uncured adhesive inside the sheet material into the fiber gaps of the sheet material, thereby improving the permeability of the adhesive and further enhancing the overall stability of the sheet material.

[0032] Embodiment 2 An efficient hot pressing forming process for fragrant cedar homogeneous board uses the efficient hot pressing forming device for fragrant cedar homogeneous board in Embodiment 1, and further includes the following steps: Step 1: Raw material preparation and pretreatment. Use a high-precision band saw to cut the log into thin boards with uniform specifications, and finely polish the surface of the thin boards through a polishing device to ensure that the thin boards reach the best pretreatment state; Step 2: Glue application. According to the characteristics of fragrant cedar material and the requirements of the finished product, accurately adjust the composition and viscosity of the adhesive, and use an automatic glue application device to achieve quantitative and uniform spraying of the adhesive. After the glue application is completed, quickly transport it to the hot pressing mechanism; Step 3: Lamination. Stack the thin boards layer by layer in the designed order to form a complete board, and pre-press the board to make the adhesive initially cured and fix the shape of the board; Step 4: Hot pressing. Transport the board to the lower die 4, start the high-frequency heating devices in the upper die 3 and the lower die 4. After the upper die 3 and the lower die 4 are preheated, the upper die 3 moves downward to hot press the board. After the board is compacted, it enters the pressure holding stage; Step 5: Demolding. After the hot pressing is completed, the upper die 3 is lifted, and the formed arc-shaped board is taken off, and the surface treatment and quality inspection of the arc-shaped board are carried out.

[0033] With the above structure, the working principle of this case is that the hydraulic cylinder 10 on the frame 1 can drive the pressure plate 2 to move up or down. The pressure plate 2 drives the upper die 3 to move up or down. The high-frequency heating devices in the upper die 3 and the lower die 4 are prior arts, and their specific structures and working principles will not be elaborated here. After the high-frequency heating devices are started, they can heat the contact surfaces between the upper die 3 and the lower die 4 and the sheet material to the set temperature, so as to achieve hot pressing operation. When the pressure plate 2 moves up and down, the four guide rods 8 on the pressure plate 2 slide in the guide holes of the four guide blocks 9 respectively. The four guide blocks 9 play a limiting role on the four guide rods 8, so that the cooperation between the four guide rods 8 and the four guide blocks 9 increases the stability of the pressure plate 2 when it moves up and down, and avoids the situation of skew and displacement of the upper die 3.

[0034] Place the sheet on the lower die 4. After starting the hydraulic cylinder 10, the upper die 3 moves downward. Two slide rails 58 on the upper die 3 drive four connecting blocks 53 to move downward through four pulley seats 57. Four sliding shafts 54 on the four connecting blocks 53 drive two groove rods 56 to move downward. When the groove rods 56 move downward, two elastic telescopic rods 55 at both ends of the groove rods 56 contract. While the four connecting blocks 53 move downward, they drive two rotating shafts 51 to move downward. Two pressure rollers 52 on the two rotating shafts 51 are located between the upper die 3 and the sheet. Therefore, when the upper die 3 moves downward, the two pressure rollers 52 contact the sheet first, and the two pressure rollers 52 apply pressure to the surface of the sheet first, causing the sheet to deform slightly. Since the four elastic telescopic rods 55 have elasticity themselves, when the two pressure rollers 52 apply a certain pressure value to the sheet, the four elastic telescopic rods 55 stop deforming. At this time, the upper die 3 continues to move downward, causing the pulley seats 57 on the four connecting blocks 53 to start sliding on the two slide rails 58. The contact surfaces of the upper die 3 and the lower die 4 with the sheet are arc-shaped, and the shape of the slide rail 58 is similar to the bottom edge of the upper die 3. Taking one of the groove rods 56 as an example, the two sliding shafts 54 can only slide horizontally in the straight groove of the groove rod 56. Therefore, the two connecting blocks 53 are limited and can only slide horizontally on the groove rod 56. When the pulley seats 57 on the two connecting blocks 53 move downward along the slide rail 58, they are subjected to the reaction force of the slide rail 58 and slide along the slide rail 58. Therefore, while the pulley seats 57 on the connecting block 53 slide on the slide rail 58, the sliding shafts 54 on the connecting block 53 also slide in the straight groove of the groove rod 56, thus achieving the effect that the four connecting blocks 53 can drive the two rotating shafts 51 to move to both sides along the arc-shaped bottom edge of the upper die 3. Therefore, after the two pressure rollers 52 apply a certain pressure to the sheet, they can stop moving downward and move to both sides as the upper die 3 moves downward. While the two pressure rollers 52 move to both sides, the two pressure rollers 52 roll the surface of the sheet from the middle to both sides. Since local bulges may occur during the stacking and transportation of the sheet, rolling from the middle to both sides can flatten the locally bulged parts, so that when the upper die 3 contacts the sheet, the surface of the sheet can maintain a certain flatness, ensuring uniform force during hot pressing, and the adhesive in the sheet can be evenly extruded through rolling, avoiding the situation of excessive glue in local areas during gluing, which causes bulges. The excess adhesive is extruded to the surrounding areas by rolling, making the distribution of the adhesive inside the sheet more uniform. When the bottom of the upper die 3 contacts the sheet, the two pressure rollers 52 simultaneously maintain contact with the sheet and move to both sides. When the upper die 3 completely presses the sheet, the two pressure rollers 52 respectively move to both sides of the upper die 3 and do not hinder the hot pressing.

[0035] When the pressure roller 52 moves, the toothed disc 59 can be regarded as a sprocket, and the group of short shafts 510 can be regarded as multiple spindles on a chain. Therefore, when the toothed disc 59 follows the movement of the rotating shaft 51, it can rotate through the meshing action of the group of short shafts 510, so that the two rotating shafts 51 can also use the two toothed discs 59 to drive the two pressure rollers 52 to rotate while moving. The two pressure rollers 52 can also rotate when the surface of the plate moves to both sides, and the two pressure rollers 52 rotate in opposite directions, so that the two pressure rollers 52 can increase the contact with the surface of the plate by rotating. The contact area enables the two pressure rollers 52 to continuously rub the surface of the plate using their surfaces, so that the surface of the plate forms a tensioning force on both sides. The two pressure rollers 52 tension the surface of the plate on both sides, making the surface of the plate smoother, and the surface of the plate is temporarily stretched from the middle to both sides. When the upper mold 3 completely presses the plate, the two pressure rollers 52 also break away from contact with the plate, and the plate is hot-pressed and formed. By stretching the surface of the plate from the middle to both sides in advance, it can be avoided that when the plate is bent by the downward pressure of the upper mold 3, wrinkles will occur in the central part of the bent top surface of the plate, thereby affecting the appearance quality.

[0036] When placing the plate, place the plate between the two positioning plates 63 so that the two positioning plates 63 are close to both sides of the plate to position the plate and prevent the plate from being skewed and affecting the hot pressing operation. The four guide rods 8 drive the four slot plates 66 to move downward respectively as the pressing plate 2 moves downward. When the slot plates 66 move downward, they can use the inclined grooves to drive the dial shaft 65 to move in the direction close to the bending center of the lower mold 4. When the dial shaft 65 moves, it can drive the slide bar 62 to move synchronously through the convex rod 64, and the slide bar 62 can slide on the lower mold 4 with the two sliders 61. Therefore, when the four slot plates 66 move downward, they can use the cooperation of the four dial shafts 65 and the four convex rods 64 to drive the two slide bars 62 to move in the direction close to each other on the lower mold 4. When the slide bar 62 moves, it drives the positioning plates 63 to move synchronously. When the plate is pressed down by the upper mold 3, the two sides of the plate will gradually gather toward the middle. , and the two positioning plates 63 can move synchronously toward the middle with the two sides of the plate, so that the two positioning plates 63 can continuously center the plate. When the plate is about to be completely bent, the plate enters the gap between the arc-shaped parts of the upper mold 3 and the lower mold 4, and the two sides of the plate are separated from the two positioning plates 63. At this time, the plate has been pressed, so there is no need to position it again. A straight groove is also provided on the inclined groove of the groove plate 66. When the plate is separated from the two positioning plates 63, the pressure plate 2 and the four groove plates 66 continue to move downward without driving the two slide bars 62 to move. The staff can rotate the two screw rods 68 above the slide bar 62. When the screw rods 68 are rotated, the distance between the positioning plate 63 and the nut block 67 can be adjusted by using the threaded connection relationship, thereby achieving the effect of adjusting the distance between the two positioning plates 63 by rotating the four screw rods 68, thereby matching plates of different widths.

[0037] Since the slider 61 drives the inclined plane block 72 to move synchronously when moving, when the two slide bars 62 move towards each other and are about to move in place, the four inclined plane blocks 72 can be inserted into the bottom of the seal frame 71, and the seal frame 71 is jacked up by the inclined planes of the four inclined plane blocks 72, so that the seal frame 71 moves up a certain distance. After the upper die 3 and the lower die 4 press the plate, the seal frame 71 moves up to seal the gap formed between the upper die 3 and the lower die 4, thereby achieving a certain heat preservation effect, avoiding continuous heat dissipation from the gap between the upper die 3 and the lower die 4 during hot pressing, thus increasing the energy consumption of the high-frequency heating device, and at the same time causing the ambient temperature around the frame 1 to rise, causing discomfort to the operators; when the pressing plate 2 is about to move down in place, it contacts and presses the four air bags 74, so that the four air bags 74 respectively transport air through the four air tubes 75 to the seal frame 71. The air tubes 75 are made of flexible materials, and the air bags 74 can reset themselves after separating from the pressing plate 2. After the seal frame 71 rises, air is injected into the seal frame 71. After the upper die 3 and the lower die 4 press the plate, the seal frame 71 moves up and plays a sealing role. At the same time, the air in the seal frame 71 is injected into the gap between the upper die 3 and the lower die 4 through a plurality of air holes 73, so that the air pressure in contact with the plate between the upper die 3 and the lower die 4 increases, so that the air between the upper die 3 and the lower die 4 can push the unfixed adhesive inside the plate into the fiber gaps of the plate, thereby improving the permeability of the adhesive and further enhancing the overall stability of the plate.

[0038] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An efficient hot pressing and forming device for cedar homogeneous board, comprising a frame (1), characterized in that: Two hydraulic cylinders (10) are installed on the frame (1). The output ends of the two hydraulic cylinders (10) are fixedly connected with a pressing plate (2). A top die (3) is fixedly installed on the bottom surface of the pressing plate (2). A bottom die (4) is installed on the frame (1). It further includes a rolling component (5) for rolling and flattening the sheet material; a positioning component (6) for centering and positioning the sheet material; a sealing component (7) for sealing the gap between the top die (3) and the bottom die (4) during hot pressing; The rolling component (5) includes two rotating shafts (51). Pressing rollers (52) are respectively fixedly connected to the outer walls of the two rotating shafts (51). Connecting blocks (53) are respectively rotatably connected to both ends of the rotating shafts (51). A sliding shaft (54) and a pulley seat (57) are fixedly connected to the connecting blocks (53). Two guiding blocks (9) are respectively fixedly connected to the outer walls of both ends of the bottom die (4). Elastic telescopic rods (55) are respectively fixedly installed on the four guiding blocks (9). A groove rod (56) is fixedly connected to the two elastic telescopic rods (55) located at the same end of the bottom die (4). Slide rails (58) are respectively fixedly installed on the outer walls of both ends of the top die (3).

2. The high-efficiency hot pressing forming device for a scented cedar homogeneous board according to claim 1, characterized in that: Four guiding rods (8) are fixedly connected to the bottom surface of the pressing plate (2). The four guiding rods (8) are respectively located at the four corners of the bottom surface of the pressing plate (2). Guide holes are respectively arranged on the four guiding blocks (9). The four guiding rods (8) respectively penetrate and are slidably connected to the guide holes of the four guiding blocks (9). High-frequency heating devices are respectively arranged in the top die (3) and the bottom die (4).

3. The high-efficiency hot pressing forming device for a scented cedar homogeneous board according to claim 2, characterized in that: Both of the two pressing rollers (52) are located below the top die (3). The two pressing rollers (52) are arranged in a mirror image. A straight groove is arranged on the groove rod (56). The two sliding shafts (54) on the connecting blocks (53) at both ends of the rotating shaft (51) are respectively slidably connected to the straight grooves of the two groove rods (56). The two pulley seats (57) on the connecting blocks (53) at both ends of the rotating shaft (51) are respectively slidably connected to the two slide rails (58) through pulley groups.

4. The high-efficiency hot pressing and forming device for a scented cedar homogeneous board according to claim 3, wherein: A toothed disc (59) is fixedly connected to the outer wall of one end of the rotating shaft (51). A group of short shafts (510) are respectively fixedly installed on the outer walls of both ends of the top die (3). The two toothed discs (59) are respectively meshed with the two groups of short shafts (510).

5. The high-efficiency hot pressing forming device for a fragrant cedar homogeneous board according to claim 2, characterized in that: The positioning component (6) includes two sliding rods (62). Two sliders (61) are respectively fixedly connected to the bottom parts of the two sliding rods (62). Four sliding grooves are arranged on the bottom die (4). The four sliders (61) are respectively slidably installed in the four sliding grooves of the bottom die (4). A positioning plate (63) is slidably connected to the sliding rods (62). The two positioning plates (63) are arranged in a mirror image.

6. The high-efficiency hot pressing forming device for a fragrant cedar homogeneous board according to claim 5, characterized in that: Both ends of the sliding rod (62) are fixedly connected with convex rods (64) respectively. One end of the convex rod (64) far away from the sliding rod (62) is fixedly connected with a shifting shaft (65). The outer walls of the four guide rods (8) are fixedly connected with groove plates (66) respectively. Oblique grooves are arranged on the groove plates (66). The four shifting shafts (65) are respectively slidably connected with the oblique grooves on the four groove plates (66).

7. An efficient hot pressing forming device for a scented cedar homogeneous board according to claim 6, characterized in that: Two nut blocks (67) are fixedly connected to the sliding rod (62). Two screw rods (68) are rotatably connected to the positioning plate (63). The four screw rods (68) are respectively threadedly connected with the four nut blocks (67).

8. The high-efficiency hot pressing forming device for a scented cedar homogeneous board according to claim 6, characterized in that: The sealing assembly (7) includes a sealing frame (71). Two installation grooves are arranged on the lower die (4). The sealing frame (71) is vertically slidably connected in the two installation grooves of the lower die (4). An inclined plane block (72) is fixedly connected to the slider (61). When the four inclined plane blocks (72) move, they are in sliding contact with the bottom outer wall of the sealing frame (71). The sealing frame (71) is in fit with the bottom edge of the upper die (3) during the movement process.

9. An efficient hot pressing forming device for a scented cedar homogeneous board according to claim 8, characterized in that: The sealing frame (71) is hollow. A plurality of air holes (73) are formed inside the sealing frame (71). Four air bags (74) are fixedly installed on the lower die (4). The four air bags (74) are respectively located at the four corners of the top surface of the lower die (4). The pressing plate (2) presses the four air bags (74) during the movement process. Air pipes (75) are respectively fixedly connected to the four air bags (74). One ends of the four air pipes (75) far away from the air bags (74) are all connected with the sealing frame (71).

10. An efficient hot pressing forming process for a homogeneous Chinese fir board, characterized in that: Using the high-efficiency hot pressing forming device for the incense cedar homogeneous board according to any one of claims 1-9, the following steps are further included: Step 1: Raw material preparation and pretreatment. Use a high-precision band saw to cut the log into thin boards with unified specifications, and finely polish the surface of the thin boards through a polishing device to ensure that the thin boards reach the best pretreatment state; Step 2: Glue application. According to the characteristics of the incense cedar material and the requirements of the finished product, accurately prepare the composition and viscosity of the adhesive, and use an automatic glue application device to achieve quantitative and uniform spraying of the adhesive. After the glue application is completed, quickly transport it to the hot pressing mechanism; Step 3: Lamination. Stack the thin boards layer by layer in the designed order to form a complete board, and pre-press the board to initially cure the adhesive and fix the shape of the board; Step 4: Hot pressing. Transport the board to the lower die (4), start the high-frequency heating device in the upper die (3) and the lower die (4). After the upper die (3) and the lower die (4) are preheated, the upper die (3) moves down to hot press the board. After the board is compacted, it enters the pressure holding stage; Step 5: Demolding. After the hot pressing is completed, the upper die (3) is lifted, and the formed arc-shaped board is taken off, and the surface treatment and quality inspection of the arc-shaped board are carried out.

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