High-strength stone plastic plate hot press forming machine and hot press forming process thereof

Abstract

This invention discloses a hot press forming machine for high-strength stone-plastic composite panels and its hot press forming process, relating to the field of hot press forming technology. It includes a machine base frame, with a hot press module installed inside the frame. The hot press module contains forming auxiliary components, including a support pad, a guide buffer, and a bearing pad. The guide buffer includes a short inclined plate, a middle inclined plate, and a long inclined plate, which are alternately arranged between the support pad and the bearing pad. The bearing pad and the inclined surface of the guide buffer are in elastic sliding contact, effectively solving the technical problems of uneven heat pressure transmission and localized force imbalance in existing hot press equipment. This significantly improves the stability and uniformity of hot press forming. The alternating arrangement of the short, middle, and long inclined plates in the guide buffer, combined with the gradient design of the inclination angle and cross-sectional area, enables the vertical heat pressure applied by the main hydraulic cylinder to be smoothly and gradually distributed laterally.

Description

Technical Field

[0001] This invention relates to the field of hot pressing technology, specifically to a hot pressing machine for high-strength stone-plastic composite panels and its hot pressing process. Background Technology

[0002] At present, with the rapid development of the building materials industry, high-strength stone-plastic composite boards have been widely used in decoration and building materials manufacturing due to their advantages such as high structural strength, good wear resistance, environmental protection and formaldehyde-free properties, and stable molding. They have become an important type of board for large-scale and industrialized production and have broad application prospects in the field of building materials processing.

[0003] However, the automation and molding stability of current high-strength stone-plastic composite board hot pressing equipment are still insufficient. Traditional hydraulic hot pressing machines have obvious defects in structural design and force transmission control. How to ensure uniform heat and pressure transmission and achieve stable and controllable molding dimensions of stone-plastic composite board blanks has become a key issue restricting the large-scale production of high-strength stone-plastic composite boards.

[0004] In the existing hot-pressing production process of stone-plastic composite boards, conventional integral hot-pressing equipment is mostly used to press the board blank. The equipment mainly relies on hydraulic cylinders to directly drive the hot-pressing plate to complete the pressing action, which has many prominent problems in actual production: 1. Uneven heat and pressure transmission can easily lead to localized stress imbalance. Traditional hot pressing equipment lacks a layered and lateral force transmission structure. Vertical pressure is applied directly to the surface of the board, making it impossible to achieve stable layer-by-layer transmission from the center to the sides. This can easily cause the stone-plastic board to be pressed too tightly or loosely in some areas, resulting in uneven thickness and large differences in density of the finished product, making it difficult to meet the molding precision requirements of high-strength stone-plastic boards.

[0005] 2. The dimensions of the slab cannot be adaptively adjusted during hot pressing, resulting in poor consistency of finished products. Under high temperature and pressure, the stone-plastic slab will undergo thickness compression and lateral extension. The existing equipment lacks the matching forming auxiliary structure, which cannot constrain and compensate for the deformation of the slab. Defects such as board warping and irregular edges are prone to occur. At the same time, the lack of buffer and guiding structure results in large fluctuations in the slab forming dimensions, which affects the finished product qualification rate.

[0006] 3. The stability and service life of the equipment are limited. Traditional hot pressing structures are mostly rigid contact, which can easily lead to stress concentration and accelerated wear of parts after long-term use. The lack of buffer support, inclined plane limit and elastic fit structure not only leads to greater impact during hot pressing and unstable equipment operation, but also accelerates the wear of molds and transmission components, increases maintenance costs, and makes it difficult to adapt to the needs of continuous and large-scale stone-plastic board production.

[0007] Therefore, in view of this, the present invention proposes a hot pressing molding machine for high-strength stone-plastic composite panels and its hot pressing molding process to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a hot-press forming machine for high-strength stone-plastic composite boards and its hot-press forming process, thereby resolving the technical issues raised in the background section.

[0009] Firstly, to achieve the above objectives, the technical solution adopted by the present invention is as follows: a hot press forming machine for high-strength stone-plastic board, comprising a machine base frame, a hot press module is assembled inside the machine base frame, and a forming auxiliary component is provided inside the hot press module, the forming auxiliary component comprising a support pad, a guide buffer and a bearing pad; The guide buffer includes a short inclined plate, a middle inclined plate, and a long inclined plate. The short inclined plate, the middle inclined plate, and the long inclined plate are arranged alternately between the support pad and the bearing pad. The bearing pad and the inclined surface of the guide buffer are slidably assembled. When the hot pressing module is driven to press down, the downward hot pressure is transmitted layer by layer to the lateral direction through the inclined surface of the guide buffer to adapt to the dimensional changes during the hot pressing of the stone-plastic board blank.

[0010] Furthermore, the hot pressing module includes a main hydraulic cylinder, an upper hot pressing plate, and a lower hot pressing box. The output end of the main hydraulic cylinder is fixedly connected to the upper hot pressing plate. The upper hot pressing plate and the lower hot pressing box are arranged vertically and vertically respectively. The lower hot pressing box is used to carry the stone-plastic board blank. The main hydraulic cylinder drives the upper hot pressing plate to move downward to hot press the stone-plastic board blank in the lower hot pressing box.

[0011] Furthermore, a control module is mounted on the side of the base frame. The control module includes a control panel and connecting pipes. The control panel is electrically connected to the hot pressing module, and the connecting pipes are connected to the hydraulic system of the hot pressing module. The control panel is used to adjust the hot pressing temperature, pressure, and holding time.

[0012] Furthermore, the two ends of the guide buffer are fixedly connected to the support pad and the bearing pad, respectively, and the short inclined plate, the middle inclined plate and the long inclined plate of the guide buffer are all made of elastic wear-resistant material at the end near the bearing pad.

[0013] Furthermore, the inclination angles of the short, medium, and long inclined plates in the guide buffer increase sequentially, and the upper and lower cross-sectional areas of the three plates also increase sequentially.

[0014] Furthermore, in the guide buffer, the short inclined plate, the middle inclined plate and the long inclined plate are all fixedly connected to the top column on the side near the support pad, and the top column is perpendicular to the corresponding short inclined plate, the middle inclined plate and the long inclined plate respectively.

[0015] Furthermore, the molding auxiliary component also includes an axially movable component, which includes a snap-fit ​​frame and a buffer plate. The upper surface of the snap-fit ​​frame is slidably connected to the lower hot press box, and the lower surface of the snap-fit ​​frame is movably connected to the support pad through the buffer plate.

[0016] Furthermore, the buckle frame and the support pad are close to each other on one side to form an inclined sliding fit, and the bottom protrusion of the buckle frame is in contact with and limited by the lower surface of the support pad.

[0017] Furthermore, the molding auxiliary component also includes a lateral movable component, which includes a sloping frame. A buffer shaft is fixedly connected to the side of the sloping frame away from the bearing pad. A fixing plate is fixedly connected to the end of the buffer shaft away from the sloping frame. The fixing plate is fixedly connected to the upper surface of the support pad. The sloping frame and the bearing pad are close to each other and form a sloping sliding fit.

[0018] Secondly, the present invention provides a hot-pressing molding process for high-strength stone-plastic composite panels, comprising the following steps: S1: Hot press equipment preparation: Check whether the machine base frame, hot press module and molding auxiliary components are intact, and ensure that the support pad, guide buffer and bearing pad are assembled in place to prevent uneven force or abnormal operation during hot pressing. S2: Hot pressing parameter adjustment: The hot pressing temperature, pressure and holding time are set through the control panel of the control module to match the main hydraulic cylinder, upper hot pressing plate and lower hot pressing box to meet the forming requirements of stone plastic board blank, and avoid forming defects caused by improper parameters; S3: Hot pressing molding operation: Place the stone-plastic board blank into the lower hot press box, start the hot pressing module, the main hydraulic cylinder drives the upper hot press plate to press down, and the guide buffer will transfer the vertical hot pressure layer by layer to the side stably, gradually completing the hot pressing molding. S4: Hot pressing operation completed: After hot pressing is completed, stop the machine, remove the finished stone-plastic board, clean the residual material in the lower hot press box, check the condition of the guide buffer and top column components, and perform maintenance after the equipment has cooled and stabilized to prepare for the next operation.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. This device, through the introduction of guide buffer components, effectively solves the technical problems of uneven heat pressure transmission and local stress imbalance in existing hot pressing equipment, significantly improving the stability and uniformity of hot pressing molding. During the hot pressing process, the short, medium, and long inclined plates in the guide buffer components are arranged alternately, and with the gradient design of the inclination angle and cross-sectional area, the vertical heat pressure applied by the main hydraulic cylinder can be transmitted layer by layer and smoothly to the side, realizing the gradual diffusion of pressure from the center to the edge, avoiding local stress concentration. At the same time, the top column provides stable support for each inclined plate, preventing the inclined plate from being tilted or deformed under force, and the elastic wear-resistant material reduces rigid impact, further ensuring the continuity and uniformity of pressure transmission, ensuring that all parts of the stone-plastic board blank can be uniformly compacted, effectively solving the defects of uneven board thickness and large density differences after molding in existing equipment, laying the foundation for the molding quality of high-strength stone-plastic boards.

[0020] 2. The introduction of axial movable parts effectively solves the technical problems of existing equipment being unable to adapt to changes in the hot pressing dimensions of the slab and irregular edges of the finished product. This improves the regularity and pass rate of the finished slab. During the continuous hot pressing process, the snap-fit ​​frame of the axial movable parts forms an inclined sliding fit with the bearing pad, and the bottom protrusion achieves contact and limitation. It can generate adaptive displacement simultaneously when the bearing pad moves downward, thereby increasing the forming space of the lower hot press box. This accommodates the slight lateral extension of the stone plastic slab during hot pressing, avoiding material accumulation or edge compression deformation caused by space limitations. At the same time, the buffer plate provides cushioning for the movement of the snap-fit ​​frame, ensuring its smooth movement. The snap-fit ​​frame always provides a vertical forming surface for the slab, effectively solving the problems of warping and rough edges of the slab after forming with existing equipment. This makes the sides of the finished stone plastic slab flat and regular, improving product quality and practicality.

[0021] 3. The introduction of the lateral movable component, as another adaptation solution, also solves the technical problem of poor adaptability to changes in the hot pressing dimensions of the slab. At the same time, it meets the usage requirements in specific scenarios. During the hot pressing process, the inclined frame of the lateral movable component forms an inclined sliding fit with the bearing pad. When the bearing pad moves downward, the inclined frame can be driven to move laterally through the inclined transmission, thereby increasing the forming space, adapting to the slight lateral extension of the slab, ensuring that the slab is fully compacted, and avoiding material accumulation and edge deformation. The fixed plate provides a stable installation base for the buffer shaft. The buffer shaft not only plays a guiding role, but also buffers and depressurizes, avoiding rigid collisions of components and extending the service life of the equipment. At the same time, the inclined structure of the inclined frame makes the edge of the formed stone-plastic board a regular trapezoid, adapting to specific installation scenarios, enriching the product types, further improving the applicability and market competitiveness of the device, and making up for the shortcomings of the single product form of the existing equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the axial view of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the frontal planar structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the molding auxiliary component of the present invention; Figure 4 This is an exploded view showing the positional relationship between the axially movable component and the guide buffer component in Embodiment 1 of the present invention; Figure 5 This is a front view schematic diagram of the guide buffer structure of the present invention; Figure 6 This is a schematic diagram of the initial planar structure of the axially movable component in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the planar structure of the axially movable component in use according to Embodiment 1 of the present invention; Figure 8 This is an exploded view showing the positional relationship between the lateral movable component and the guide buffer component in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the initial planar structure of the transverse movable component in Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the planar structure of the transverse movable component in use in Embodiment 2 of the present invention.

[0023] The numbers on the map are: 1. Base frame; 2. Hot pressing module; 21. Main hydraulic cylinder; 22. Upper hot pressing plate; 23. Lower hot pressing box; 3. Control module; 31. Control panel; 32. Connecting pipes; 4. Molding auxiliary components; 41. Support pad; 42. Guide buffer; 421. Short inclined plate; 422. Middle inclined plate; 423. Long inclined plate; 43. Top column; 44. Bearing pad; 45. Axial moving parts; 451. Snap-on frame; 452. Buffer plate; 46. Lateral moving parts; 461. Sloping frame; 462. Buffer shaft; 463. Fixing plate. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1-5As shown, a hot press forming machine for high-strength stone-plastic composite panels includes a base frame 1. A hot press module 2 is assembled inside the base frame 1. A forming auxiliary component 4 is arranged inside the hot press module 2. The forming auxiliary component 4 includes a support pad 41, a guide buffer 42, and a bearing pad 44. The guide buffer 42 includes a short inclined plate 421, a middle inclined plate 422, and a long inclined plate 423. The short inclined plate 421, the middle inclined plate 422, and the long inclined plate 423 are alternately arranged between the support pad 41 and the bearing pad 44. The bearing pad 44 and the inclined surface of the guide buffer 42 are slidably assembled. When the hot press module 2 is driven to press down, the downward hot pressure is transmitted layer by layer to the lateral direction through the inclined surface of the guide buffer 42 to adapt to the dimensional changes of the stone-plastic composite panel blank during hot press forming.

[0026] It should be noted that the hot pressing module 2 includes a main hydraulic cylinder 21, an upper hot pressing plate 22, and a lower hot pressing box 23. The output end of the main hydraulic cylinder 21 is fixedly connected to the upper hot pressing plate 22. The upper hot pressing plate 22 and the lower hot pressing box 23 are arranged vertically and vertically respectively. The lower hot pressing box 23 is used to support the stone-plastic board blank. The main hydraulic cylinder 21 drives the upper hot pressing plate 22 to move downward to hot press the stone-plastic board blank in the lower hot pressing box 23.

[0027] The side of the base frame 1 is equipped with a control module 3. The control module 3 includes a control panel 31 and a connecting pipe 32. The control panel 31 is electrically connected to the hot pressing module 2, and the connecting pipe 32 is connected to the hydraulic system of the hot pressing module 2. The control panel 31 is used to adjust the hot pressing temperature, pressure and holding time.

[0028] It is worth noting that during the hot pressing process, the dimensions of the stone-plastic composite (SPC) board blank undergo a regular change before and after hot pressing. Specific changes and related details are as follows: Before hot pressing, the SPC board blank is a loose, porous, and fluffy mixture of stone-plastic materials pressed into a board. During hot pressing, under the set heating temperature and pressure, the stone-plastic material in the blank is softened and compacted under high pressure. Internal air bubbles and voids are fully eliminated, resulting in a significant reduction in the thickness of the finished SPC board compared to the blank thickness. The change is substantial. Taking the production requirements of high-strength SPC boards as an example, with a standard blank thickness of 8–15 mm, the finished product thickness after hot pressing is 4–8 mm. mm, the thickness compression ratio is usually controlled between 1.2 and 2.0 times; compared with the significant change in thickness, the area (i.e., length and width direction) of the stone-plastic board will increase slightly after hot pressing. This change is due to the controllable micro-flow of stone-plastic material during the high-pressure compaction of the board blank, which extends slightly to the sides of the board blank. The area change is small and is generally controlled within 1% to 5%.

[0029] Please refer to Figures 4-7As shown, the two ends of the guide buffer 42 are fixedly connected to the support pad 41 and the bearing pad 44, respectively. The short inclined plate 421, the middle inclined plate 422 and the long inclined plate 423 in the guide buffer 42 are all fixedly fitted with elastic wear-resistant material near the bearing pad 44. The elastic wear-resistant material is rubber. The inclination angles of the short inclined plate 421, the middle inclined plate 422 and the long inclined plate 423 in the guide buffer 42 increase sequentially, and the upper and lower cross-sectional areas of the three also increase sequentially. The short inclined plate 421, the middle inclined plate 422 and the long inclined plate 423 in the guide buffer 42 are all fixedly connected to the side of the short inclined plate 421, the middle inclined plate 422 and the long inclined plate 423 near the support pad 41. The top column 43 is perpendicular to the corresponding short inclined plate 421, the middle inclined plate 422 and the long inclined plate 423.

[0030] It should be noted that the molding auxiliary component 4 also includes an axially movable component 45, which includes a snap-fit ​​frame 451 and a buffer plate 452. The upper surface of the snap-fit ​​frame 451 is slidably connected to the lower hot press box 23, and the lower surface of the snap-fit ​​frame 451 is movably connected to the support pad 41 through the buffer plate 452. The snap-fit ​​frame 451 and the support pad 44 are close to each other on one side, forming an inclined sliding fit, and the bottom protrusion of the snap-fit ​​frame 451 is in contact with and limited by the lower surface of the support pad 44.

[0031] Specifically, when this device is working, the loose and porous stone-plastic board blank is first placed in the lower hot press box 23. The hot pressing temperature, pressure and holding time are set through the control panel 31 of the control module 3. After the equipment is started, the main hydraulic cylinder 21 drives the upper hot press plate 22 to move downward to perform hot pressing operation on the stone-plastic board blank in the lower hot press box 23.

[0032] During the hot pressing process, the vertical pressure applied by the upper hot press plate 22 is sequentially transmitted to the bearing pad 44 and the guide buffer 42. The short inclined plate 421, the middle inclined plate 422 and the long inclined plate 423 in the guide buffer 42 are alternately arranged between the support pad 41 and the bearing pad 44. The inclination angle of the three plates increases sequentially and the cross-sectional area of ​​the upper and lower plates increases sequentially. Under the action of vertical pressure, each inclined plate transmits the hot pressure from top to bottom to the side layer by layer and smoothly through its own inclined surface, so that the pressure on the slab is evenly diffused from the center to the edge, avoiding local stress concentration. The top column 43 is vertically distributed with the corresponding inclined plate, providing stable support for the inclined plate and ensuring that the inclined plate does not tilt or deform during the force process. The elastic wear-resistant material near the bearing pad 44 plays a buffering role, reducing rigid impact and further improving the stability and uniformity of pressure transmission.

[0033] Since the main hydraulic cylinder 21 in the existing technology and this device is mostly assembled at the center of the base frame 1 and the hot pressing module 2, in the initial stage of hot pressing, the vertical pressure applied by the main hydraulic cylinder 21 driving the upper hot pressing plate 22 will preferentially act on the short inclined plate 421 located in the central area, so that the short inclined plate 421 will bear the main pressure first and begin to transmit the force laterally. When the force on the short inclined plate 421 reaches its maximum bearing capacity, the downward hot pressure does not stop. At this time, the middle inclined plate 422 located outside the short inclined plate 421 begins to bear the remaining pressure and continues to transmit it laterally. As the pressure continues to increase, the long inclined plate 423 participates in the force transmission process simultaneously, thereby realizing the gradual diffusion of hot pressure from the center to the side, ensuring the continuity and uniformity of pressure transmission.

[0034] As hot pressing continues, the bearing pad 44 moves downward under vertical pressure. Since the snap-fit ​​frame 451 in the axial movable part 45 and the side of the bearing pad 44 that are close to each other form an inclined sliding fit, and the bottom protrusion of the snap-fit ​​frame 451 is in contact with and limited by the lower surface of the bearing pad 44, the bearing pad 44 moves downward and drives the snap-fit ​​frame 451 to move downward synchronously through the inclined fit. The upper surface of the snap-fit ​​frame 451 is in sliding fit with the lower hot press box 23, and the lower surface is movably connected to the support pad 41 through the buffer plate 452. During the downward movement, the molding space inside the lower hot press box 23 is made more adaptable to match the 1% to 5% slight lateral extension generated by the stone plastic board blank during hot pressing and compaction. This ensures that the board blank can be fully compacted without causing material accumulation or edge compression deformation due to space limitations.

[0035] After the hot pressing and pressure holding are completed, the main hydraulic cylinder 21 drives the upper hot pressing plate 22 to move upward and reset. The bearing pad 44 loses vertical pressure, and the elastic structure of the guide buffer 42 drives the bearing pad 44 to move upward and reset. The snap-fit ​​frame 451 moves inward synchronously under the action of the buffer plate 452, and the forming space returns to its initial state. During this process, the snap-fit ​​frame 451 always provides a relatively regular vertical forming surface for the stone plastic board blank, so that the side of the stone plastic board after hot pressing is flat and regular, without sloping, warping or burr defects, and finally a high-strength stone plastic board finished product with uniform thickness, regular edges and consistent density is obtained.

[0036] Example 2: Based on Example 1, please refer to... Figures 8-10 As shown, the molding auxiliary component 4 also includes a transverse movable component 46, which includes a sloping frame 461. A buffer shaft 462 is fixedly connected to the side of the sloping frame 461 away from the bearing pad 44. A fixing plate 463 is fixedly connected to the end of the buffer shaft 462 away from the sloping frame 461. The fixing plate 463 is fixedly connected to the upper surface of the support pad 41, and the sloping frame 461 and the bearing pad 44 form a sloping sliding fit on the side that are close to each other.

[0037] Specifically, based on the structure in Embodiment 2, when the device is working, the overall startup process and the process in the initial stage of hot pressing are consistent with Embodiment 1, and will not be elaborated further here.

[0038] During the continuous hot pressing, the bearing pad 44 moves downward under vertical pressure. Because the inclined frame 461 in the transverse movable member 46 and the bearing pad 44 form an inclined sliding fit on their respective sides, when the bearing pad 44 moves downward, the inclined frame 461 is driven to move laterally away from the bearing pad 44 through the transmission action of the inclined surface. The fixing plate 463 of the transverse movable member 46 is fixedly connected to the upper surface of the supporting pad 41, providing a stable mounting base for the buffer shaft 462. One end of the buffer shaft 462 is fixedly connected to the inclined frame 461, and the other end is fixedly connected to... The fixed plate 463 is fixedly connected. During the lateral movement of the inclined frame 461, the buffer shaft 462 elastically expands and contracts simultaneously. This not only guides the lateral movement of the inclined frame 461 but also acts as a buffer to reduce pressure, preventing rigid collisions during the movement of the inclined frame 461 and protecting the components from wear. At the same time, the lateral movement of the inclined frame 461 increases the adaptability of the molding space inside the lower hot press box 23, accommodating the 1% to 5% slight lateral extension during the subsequent hot pressing of the stone-plastic board blank. This ensures that the board blank can be fully compacted and avoids material accumulation or edge compression deformation due to space limitations.

[0039] After the hot pressing and pressure holding are completed, the main hydraulic cylinder 21 drives the upper hot pressing plate 22 to move upward and reset. The bearing pad 44 loses vertical pressure, and the elastic structure of the guide buffer 42 drives the bearing pad 44 to reset upward. At this time, the inclined frame 461 returns to the direction close to the bearing pad 44 under the elastic reset action of the buffer shaft 462, and the forming space returns to its initial state. During this process, the inclined frame 461 always keeps in contact with the side of the stone plastic board blank. Due to the inclined structure of the inclined frame 461 itself, the edge of the hot-pressed stone plastic board is in a regular trapezoidal shape, which meets the installation and use requirements in specific scenarios. At the same time, the uniform force transmission of the guide buffer 42 ensures that the finished stone plastic board has uniform thickness and consistent density, and finally obtains a high-strength trapezoidal edge stone plastic board product that meets the requirements.

[0040] Example 3: A hot-pressing molding process for high-strength stone-plastic composite panels, comprising the following steps: S1: Hot pressing equipment preparation: Check whether the machine base frame 1, hot pressing module 2 and molding auxiliary components 4 are intact, and ensure that the support pad 41, guide buffer 42 and bearing pad 44 are assembled in place to prevent uneven force or abnormal operation during hot pressing. S2: Hot pressing parameter adjustment: The hot pressing temperature, pressure and holding time are set through the control panel 31 of the control module 3, so that the main hydraulic cylinder 21, the upper hot pressing plate 22 and the lower hot pressing box 23 match the forming requirements of the stone plastic board blank, and avoid forming defects caused by improper parameters. S3: Hot pressing molding operation: Place the stone-plastic board blank into the lower hot press box 23, start the hot pressing module 2, the main hydraulic cylinder 21 drives the upper hot press plate 22 to press down, and the guide buffer 42 transmits the vertical hot pressure layer by layer to the side stably, gradually completing the hot pressing molding. S4: Hot pressing operation completed: After hot pressing is completed, stop the machine, remove the finished stone-plastic board, clean the residual material in the lower hot pressing box 23, check the condition of the guide buffer 42 and top column 43, and perform maintenance after the equipment has cooled and stabilized to prepare for the next operation.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot press forming machine for high-strength stone-plastic composite panels, comprising a base frame (1), wherein a hot press module (2) is assembled inside the base frame (1), characterized in that: The hot pressing module (2) is provided with a molding auxiliary component (4), which includes a support pad (41), a guide buffer (42), and a bearing pad (44). The guide buffer (42) includes a short inclined plate (421), a middle inclined plate (422) and a long inclined plate (423). The short inclined plate (421), the middle inclined plate (422) and the long inclined plate (423) are arranged alternately between the support pad (41) and the bearing pad (44). The bearing pad (44) and the inclined surface of the guide buffer (42) are slidably assembled. When the hot pressing module (2) is driven to press down, the downward hot pressure is transmitted layer by layer to the lateral direction through the inclined surface of the guide buffer (42) to adapt to the dimensional changes during the hot pressing of the stone plastic board blank.

2. The hot press forming machine for high-strength stone-plastic composite panels according to claim 1, characterized in that: The hot pressing module (2) includes a main hydraulic cylinder (21), an upper hot pressing plate (22) and a lower hot pressing box (23). The output end of the main hydraulic cylinder (21) is fixedly connected to the upper hot pressing plate (22). The upper hot pressing plate (22) and the lower hot pressing box (23) are arranged vertically and vertically respectively. The lower hot pressing box (23) is used to carry the stone-plastic board blank. The main hydraulic cylinder (21) drives the upper hot pressing plate (22) to move downward to hot press the stone-plastic board blank in the lower hot pressing box (23).

3. The hot press forming machine for high-strength stone-plastic composite panels according to claim 1, characterized in that: The side of the base frame (1) is equipped with a control module (3). The control module (3) includes a control panel (31) and a connecting pipe (32). The control panel (31) is electrically connected to the hot pressing module (2). The connecting pipe (32) is connected to the hydraulic system of the hot pressing module (2). The control panel (31) is used to adjust the hot pressing temperature, pressure and holding time.

4. The hot press forming machine for high-strength stone-plastic composite panels according to claim 1, characterized in that: The two ends of the guide buffer (42) are fixedly connected to the support pad (41) and the bearing pad (44) respectively, and the short inclined plate (421), the middle inclined plate (422) and the long inclined plate (423) in the guide buffer (42) are all made of elastic wear-resistant material at the end near the bearing pad (44).

5. A hot press forming machine for high-strength stone-plastic composite panels according to claim 1, characterized in that: The inclined angles of the short inclined plate (421), the middle inclined plate (422) and the long inclined plate (423) in the guide buffer (42) increase sequentially, and the upper and lower cross-sectional areas of the three also increase sequentially.

6. The hot press forming machine for high-strength stone-plastic composite panels according to claim 1, characterized in that: The guide buffer (42) has a top column (43) fixedly connected to the side of the short inclined plate (421), the middle inclined plate (422) and the long inclined plate (423) near the support pad (41), and the top column (43) is perpendicular to the corresponding short inclined plate (421), the middle inclined plate (422) and the long inclined plate (423).

7. A hot press forming machine for high-strength stone-plastic composite panels according to claim 1, characterized in that: The molding auxiliary component (4) further includes an axial movable component (45), which includes a snap-fit ​​frame (451) and a buffer plate (452). The upper surface of the snap-fit ​​frame (451) is slidably connected to the lower hot press box (23), and the lower surface of the snap-fit ​​frame (451) is movably connected to the support pad (41) through the buffer plate (452).

8. A hot press forming machine for high-strength stone-plastic composite panels according to claim 7, characterized in that: The buckle frame (451) and the bearing pad (44) are close to each other on one side to form a sloping sliding fit, and the bottom protrusion of the buckle frame (451) is in contact with and limited by the lower surface of the bearing pad (44).

9. A hot press forming machine for high-strength stone-plastic composite panels according to claim 1, characterized in that: The molding auxiliary component (4) further includes a transverse movable component (46), which includes a beveled frame (461). A buffer shaft (462) is fixedly connected to the side of the beveled frame (461) away from the bearing pad (44). A fixing plate (463) is fixedly connected to the end of the buffer shaft (462) away from the beveled frame (461). The fixing plate (463) is fixedly connected to the upper surface of the support pad (41), and the beveled frame (461) and the bearing pad (44) on the side that are close to each other form a beveled sliding fit.

10. A hot-pressing molding process for high-strength stone-plastic composite panels, applied to a hot-pressing molding machine for high-strength stone-plastic composite panels according to any one of claims 1-9, characterized in that: Includes the following steps: S1: Hot pressing equipment preparation: Check whether the components of the machine base frame (1), hot pressing module (2) and molding auxiliary components (4) are intact, and ensure that the support pad (41), guide buffer (42) and bearing pad (44) are assembled in place to prevent uneven force or abnormal operation during hot pressing. S2: Hot pressing parameter adjustment: Set the hot pressing temperature, pressure and holding time through the control panel (31) of the control module (3) so that the main hydraulic cylinder (21), the upper hot pressing plate (22) and the lower hot pressing box (23) match the stone plastic board blank forming requirements and avoid forming defects due to improper parameters; S3: Hot pressing molding operation: Place the stone plastic board blank into the lower hot press box (23), start the hot pressing module (2), the main hydraulic cylinder (21) drives the upper hot press plate (22) to press down, and the guide buffer (42) transmits the vertical hot pressure layer by layer to the side stably, gradually completing the hot pressing molding; S4: Hot pressing operation completed: After hot pressing is completed, stop the machine, take out the finished stone plastic board, clean the residual material in the lower hot pressing box (23), check the status of the guide buffer (42) and top column (43) components, and perform maintenance after the equipment has cooled down and stabilized, in order to prepare for the next operation.

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