End processing apparatus for hollow resin sheets and manufacturing apparatus for hollow resin sheets

Abstract

To provide an end processing device for a hollow resin plate that can suppress the occurrence of mold release defects and molding defects and form an end face with excellent surface properties, and provide a device for manufacturing a hollow resin plate.SOLUTION: An end processing device 1 for processing an end of a hollow resin plate 2 into a prescribed shape comprises a table 11 on which the hollow resin plate 2 to be processed is placed, a preheating part 12 for preheating the end of the hollow resin plate 2, a heat molding part 13 for processing the end of the preheated hollow resin plate 2 into a prescribed shape by using a heating mold, a cooling part 14 for cooling the end of the processed hollow resin plate 2 by using a cooling mold, a release sheet insertion and separation mechanism 15 for inserting a release sheet 16 between the hollow resin plate 2 and the heating mold in the heat molding part 13 and for separating the release sheet 16 from the cooled hollow resin plate 2 in the cooling part 14, and the end of the hollow resin plate 2 is heated and cooled through the release sheet 16.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an end processing device for processing an end portion of a hollow resin plate into a predetermined shape and a manufacturing device for a hollow resin plate for manufacturing a hollow resin plate having an end portion processed into a predetermined shape.

Background Art

[0002] [[ID=,11]] A hollow resin plate having a plurality of hollow portions in the in-plane direction is lightweight, easy to handle, and excellent in bending rigidity and compressive strength. Therefore, it is used in a wide range of fields such as logistics applications such as box materials and packaging materials, building applications such as panel materials for walls and ceilings, and interior materials for vehicles. When manufacturing a hollow resin plate, generally, a long or large-area formed one is cut into a predetermined size. Also, for the purpose of improving handling properties, waterproof properties, strength, aesthetics, etc., the end face of the hollow resin plate after cutting may be sealed or curved (for example, see Patent Document 1). [[ID=,13]] [[ID=,14]]

[0003] [[ID=,15]] [[ID=,16]]Conventionally, as a device for processing the end face of a hollow resin plate, for example, a device for sealing using two disk-shaped rotating bodies (see Patent Document 2), a device for pressing while vacuuming using a mold (see Patent Document 3), etc. have been proposed. Also, an end face processing device having a heating mold and a cooling mold for end processing of a hollow synthetic resin plate, wherein the heating mold is heated by heat conduction from a long heating member serving as a heat source, a heat insulating material or a heat insulating plate is laid over the entire heating member and the heating mold, and the cooling mold is placed thereon has also been proposed (see Patent Document 4). [[ID=,17]]<000,013>[[ID=,18]]

Prior Art Documents

Patent Documents

Patent Document 1

Patent Document 2

Patent Document 3

[0005] However, the conventional end processing apparatus described above has the following problems. The apparatus described in Patent Document 2 has poor work efficiency because it requires a separate preheating process, and also has the problem that it is difficult to obtain a good molded surface along the entire length because the temperature of the preheated hollow resin plate decreases during sequential processing after preheating.

[0006] The apparatus described in Patent Document 3 has the problem that the preheating equipment is large and difficult to manage because it is necessary to preheat the entire plate. Furthermore, the apparatus described in Patent Document 3 has the problem that it is difficult to accommodate arbitrary product sizes because the structure of the processing die is complex, and additionally, unnecessary parts remain in the molded product, so finishing processing is required.

[0007] The end-face processing device described in Patent Document 4 has a problem in that molten resin remains in the mold when removing the product from the mold after molding with a heat molding die, making clean removal difficult. In addition, the device described in Patent Document 4 also has a problem in that only the part of the hollow resin plate to be processed that is in direct contact with the heat molding die is heated, which makes it prone to molding defects and deterioration of the surface quality of the processed surface.

[0008] Therefore, the present invention aims to provide an end-processing apparatus for hollow resin sheets and a manufacturing apparatus for hollow resin sheets that can suppress the occurrence of mold release defects and molding defects and form end faces with excellent surface properties. [Means for solving the problem]

[0009] The inventors conducted diligent experimental studies to solve the aforementioned problems and obtained the following findings. To improve the poor release from heat molding dies, one could consider applying a release treatment to the mold surface or attaching a release sheet. However, these methods do not achieve complete release, leaving resin residue on the mold, resulting in a poorly processed surface and requiring cleaning of the mold after each use. To solve this problem, the inventors found that it is effective to interpose a release sheet during molding in the processing mold, press the mold and release sheet together into a cooling mold after processing, and then peel off the release sheet after cooling. This led to the present invention.

[0010] That is, the end processing apparatus for hollow resin plates according to the present invention is an end processing apparatus for processing the end of a hollow resin plate into a predetermined shape, comprising: a table on which the hollow resin plate to be processed is placed; a preheating unit for preheating the end of the hollow resin plate; a heating and molding unit for processing the end of the preheated hollow resin plate into a predetermined shape using a heating mold; a cooling unit for cooling the processed end of the hollow resin plate using a cooling mold; and a release sheet insertion and peeling mechanism for inserting a release sheet between the hollow resin plate and the heating mold in the heating and molding unit, and peeling the release sheet from the cooled hollow resin plate in the cooling unit. The release sheet insertion and peeling mechanism comprises a first holding part that holds the upper end of the release sheet, a second holding part that holds the lower end of the release sheet, a first position adjustment part connected to the first holding part via a spring material to adjust the vertical position of the release sheet, and a second position adjustment part that adjusts the front-rear position of the release sheet, and is installed in the area directly above the end of the hollow resin plate. The ends of the hollow resin plate are heated and cooled via the release sheet. The aforementioned release sheet is, for example, a fluororesin sheet. In the hollow resin plate edge processing apparatus of the present invention, the preheating unit, the heat molding unit, and the cooling unit are arranged in the height direction within a processing unit that can be raised and lowered, and the table may move horizontally in a direction toward or away from the processing unit. 。 Book The invention provides an end-processing apparatus for hollow resin sheets, which further includes a control unit that controls the preheating unit, the heat molding unit, the cooling unit, and the release sheet insertion and peeling mechanism, enabling automatic end-processing of the hollow resin sheets. The hollow resin plate can be configured in one of the following ways: (1) a core material consisting of a sheet with multiple hollow protrusions formed on at least one surface, on which a surface material made of a thermoplastic resin sheet is laminated; (2) a core material formed by heat-sealing protrusions on a sheet together with the protrusions butting against each other, on which a surface material made of a thermoplastic resin sheet is laminated on at least one concave surface; or (3) a core material in which prismatic independent hollow portions are arranged adjacent to each other by vertical walls, on which a surface material is laminated on both the upper and lower surfaces. 。

[0011] The manufacturing apparatus for hollow resin sheets according to the present invention is an apparatus for manufacturing hollow resin sheets whose ends are processed into a predetermined shape, comprising: a table on which a hollow resin substrate before end processing is placed; a preheating section for preheating the ends of the hollow resin substrate; a heating and molding section for processing the ends of the preheated hollow resin substrate into a predetermined shape using a heating mold; a cooling section for cooling the processed ends of the hollow resin substrate using a cooling mold; and a release sheet insertion and peeling mechanism for inserting a release sheet between the hollow resin substrate and the heating mold in the heating and molding section, and for peeling the release sheet from the cooled hollow resin substrate in the cooling section. The release sheet insertion and peeling mechanism comprises a first holding part that holds the upper end of the release sheet, a second holding part that holds the lower end of the release sheet, a first position adjustment part connected to the first holding part via a spring material to adjust the vertical position of the release sheet, and a second position adjustment part that adjusts the front-rear position of the release sheet, and is installed in the area directly above the end of the hollow resin substrate. The ends of the hollow resin substrate are heated and cooled via the release sheet. [Effects of the Invention]

[0012] According to the present invention, since the edges of the hollow resin plate are heated and cooled via the release sheet, when processing the edges of the hollow resin plate into a predetermined shape, the occurrence of release defects and molding defects is suppressed, and an edge surface with excellent surface quality can be formed. [Brief explanation of the drawing]

[0013] [Figure 1] This figure schematically shows the configuration of an end-processing apparatus according to an embodiment of the present invention. [Figure 2] A and B are cross-sectional views showing examples of the configuration of a heating mold and a cooling mold. [Figure 3] This is an exploded perspective view showing an example of the structure of a hollow resin plate to be processed. [Figure 4] It is an exploded perspective view showing another configuration example of a hollow resin plate. [Figure 5] It is an exploded perspective view showing another configuration example of a hollow resin plate. [Figure 6] It is an exploded perspective view showing another configuration example of a hollow resin plate. [Figure 7] A and B are diagrams showing an example of end processing of a hollow resin plate. [Figure 8] It is a schematic diagram showing the state during preheating of the end processing device 1 shown in FIG. 1. [Figure 9] It is a diagram showing the state when the release sheet 16 is inserted into the end processing device 1 shown in FIG. 1. [Figure 10] It is a diagram showing the state during thermoforming of the end processing device 1 shown in FIG. 1. [Figure 11] It is a diagram showing the state during cooling preparation of the end processing device 1 shown in FIG. 1. [Figure 12] It is a diagram showing the state during cooling of the end processing device 1 shown in FIG. 1. [Figure 13] It is a diagram showing the state when the processing of the end processing device 1 shown in FIG. 1 is completed.

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments described below.

[0015] FIG. 1 is a diagram schematically showing the configuration of an end processing device according to an embodiment of the present invention. As shown in FIG. 1, the end processing device 1 of the present embodiment includes a table 11 on which a hollow resin plate 2 to be processed is placed, a preheating unit 12, a thermoforming unit 13, and a cooling unit 14 for processing the ends of the hollow resin plate 2 into a predetermined shape. Further, this end processing device 1 includes a release sheet insertion and peeling mechanism 15 for inserting and peeling the release sheet 16 during end processing of the hollow resin plate 2, and the ends of the hollow resin plate 2 are configured to be heated and cooled through the release sheet 16.

[0016] [Table 11] The table 11 is capable of horizontal movement with the hollow resin plate 2 to be processed placed on it. For example, as in the apparatus shown in Figure 1, if the preheating unit 12, the heat molding unit 13, and the cooling unit 14 are arranged in the height direction (vertical direction), the table 11 moves forward or backward toward them. Also, for example, if the preheating unit 12, the heat molding unit 13, and the cooling unit 14 are arranged in the lateral direction (horizontal direction) rather than the height direction, the table 11 moves not only forward and backward but also left and right.

[0017] In either device configuration, the table 11 moves forward toward the heating mold and cooling mold, pressing the hollow resin plate 2 to be processed against these molds. The configuration of the table 11 is not particularly limited, and a known horizontally moving processing table can be used. Furthermore, the direction and amount of movement of the hollow resin plate 2 may be controlled automatically or manually.

[0018] [Preheating section 12] The preheating section 12 preheats the edges of the hollow resin plate 2. In addition to direct heating using known heating devices such as infrared heaters and hot air heating devices, contact heating methods such as bringing a heated plate, heated by a plate heater, into contact with the edges can be applied. If the hollow resin plate 2 is heated and molded at room temperature without preheating, as in the apparatus described in Patent Document 4, only the surface portion in contact with the heating mold is heated, making it difficult to form a smooth curved surface at the edges. On the other hand, the edge processing apparatus 1 of this embodiment heats the entire portion to be processed in the preheating section 12, softening the resin before heat molding, so that a curved surface with excellent surface properties can be formed at the edges of the hollow resin plate 2.

[0019] [Heat forming section 13] The heat molding section 13 processes the end of the preheated hollow resin plate 2 into a predetermined shape and includes one or more heat molding dies (heating dies) and a heat source for heating each heating die. Figures 2A and 2B are cross-sectional views showing examples of the configuration of the heating dies and cooling dies. The heating dies provided in the heat molding section 13 only need to have recesses with a shape corresponding to the desired end processing shape, and their material and shape are not particularly limited. The shape of the recess of each heating die is also not particularly limited, and in addition to the U-shaped cross-section shown in Figures 2A and 2B, the cross-section may be hemispherical, V-shaped, or substantially rectangular, and can be appropriately selected according to the processing shape.

[0020] Furthermore, as shown in Figure 2A, multiple types of molds 131a to 131c with different sizes and shapes of recesses may be stacked and installed in the heat molding section 13, or as shown in Figure 2B, only one mold 131b may be installed. If multiple types of molds 131a to 131c are installed as a single unit as shown in Figure 2A, it becomes possible to accommodate hollow resin plates 2 with different thicknesses and edge processing shapes simply by adjusting the height position of the heating mold, for example, thus reducing the number of times heating molds need to be replaced and improving work efficiency.

[0021] [Cooling section 14] The cooling section 14 cools the end of the hollow resin plate 2 processed in the heating and molding section 13 at room temperature and is equipped with a cooling mold. The cooling mold provided in the cooling section 14 may have a recess corresponding to the desired processed shape of the end, and the material and shape are not particularly limited, but from the viewpoint of cooling efficiency, it is preferable to use an aluminum alloy with high thermal conductivity. The shape of the recess of each cooling mold may also be hemispherical, V-shaped, or substantially rectangular in cross-section, in addition to the U-shaped cross-section shown in Figures 2A and B, similar to the heating mold described above, and can be appropriately selected according to the processed shape.

[0022] The cooling section 14 may also be constructed by stacking multiple types of molds 131a to 131c with different sizes and shapes of recesses, as shown in Figure 2A, or by installing only one mold 131b, as shown in Figure 2B. By integrating multiple types of molds 131a to 131c as shown in Figure 2A, it becomes possible to accommodate hollow resin plates 2 with different thicknesses and edge processing shapes simply by adjusting the height position of the cooling molds, for example. This reduces the number of times cooling molds need to be replaced and improves work efficiency.

[0023] In this cooling unit 14, for example, the hollow resin plate 2 after processing is pressed against a cooling mold at room temperature (10-35°C) for about 5-10 seconds, thereby lowering the surface temperature of the hollow resin plate 2 to about 50-70°C. In this case, the cooling unit 14 does not require equipment for water cooling or air cooling of the cooling mold. Note that the present invention is not limited to room temperature cooling; the cooling mold may be water-cooled or air-cooled to cool the hollow resin plate 2 to a temperature lower than 50°C. However, once the surface temperature of the processed portion of the hollow resin plate 2 has decreased to 70°C, the release sheet can be easily peeled off without damaging the surface of the processed edge.

[0024] [Processing Unit 10] The aforementioned preheating unit 12, heating and molding unit 13, and cooling unit 14 may be arranged in the height direction within a processing unit 10 that can move up and down. In that case, the table 11 moves horizontally in a direction toward or toward the processing unit 10.

[0025] [Release sheet insertion and peeling mechanism 15] The release sheet insertion and peeling mechanism 15 inserts a release sheet 16 between the hollow resin plate 2 and the heating mold in the heating molding section 13, and peels the release sheet 16 from the cooled hollow resin plate 2 in the cooling section 14. In the preheating section 12, the processing portion of the hollow resin plate 2 needs to be heated directly, so the release sheet 16 is not interposed. Also, if the release sheet 16 is peeled off the hollow resin plate 2 immediately after processing in the heating molding section 13, resin may remain on the release sheet 16, making it difficult to peel off cleanly. For this reason, in the edge processing device 1 of this embodiment, the release sheet 16 is left attached to the edge of the hollow resin plate 2 and cooled in the cooling section 14.

[0026] The release sheet insertion and peeling mechanism 15 can be configured to include, for example, a first holding part 17a that holds the upper end of the release sheet 16, a second holding part 17b that holds the lower end of the release sheet 16, a first position adjustment part 19a connected to the first holding part 17a via a spring material 18 to adjust the vertical position of the release sheet 16, and a second position adjustment part 19b that adjusts the front-rear position of the release sheet 16. In this case, the release sheet insertion and peeling mechanism 15 is installed in the area directly above the end of the hollow resin plate 2.

[0027] The material and thickness of the release sheet 16 can be appropriately selected depending on the type of resin and the shape of the edges, but a fluororesin sheet is preferred from the viewpoint of heat resistance and release properties. In addition, the first and second holding parts 17a and 17b that hold the upper and lower ends of the release sheet 16 can be made of stainless steel pipe material with a diameter of 10 to 15 mm, for example. If the release sheet 16 is simply suspended, it may bend or sway in the wind and cannot be inserted stably, so it is preferable to fix pipe material with a certain amount of mass to the upper and lower ends so that tension is applied to the release sheet 16.

[0028] In the end processing apparatus 1 of this embodiment, in order to prevent the release sheet 16 from being pulled and damaged when pressed against the mold in the heating molding section 13 and the cooling section 14, the first holding section 17a and the first position adjustment section 19a are connected via a spring material 18, and this spring material 18 relieves the tension applied to the release sheet 16. Specifically, multiple spring materials 18 are installed at intervals in the width direction of the release sheet 16. As for the spring material 18 used here, it is preferable that the tension per spring be 3N or less so that no excessive force is applied to the release sheet 16. For example, a light load tension spring with a maximum deflection of 50 mm and a spring constant of about 0.1 N / mm can be used.

[0029] Furthermore, an air cylinder can be used, for example, for the first position adjustment unit 19a, which adjusts the vertical position of the release sheet 16, and the second position adjustment unit 19b, which adjusts the front-to-back position of the release sheet 16.

[0030] [Hollow resin plate 2] The hollow resin plate 2 processed by the end-face processing apparatus of this embodiment can be, for example, one in which a surface material is laminated on at least one surface of a core material consisting of one or two resin sheets in which a plurality of protrusions and / or recesses are formed in a matrix.

[0031] The core material constituting the hollow resin plate 2 can be any thermoplastic resin, and its type and properties are not particularly limited. Specific examples of thermoplastic resins include polyethylene (PE), polypropylene (PP), and polycarbonate (PC), but among these, olefin resins such as low-density polyethylene, high-density polyethylene, linear low-density polyethylene, ultra-low-density polyethylene, homopolypropylene, random polypropylene, and block-shaped polypropylene are preferred from the viewpoint of processability and other factors.

[0032] The surface material can be any thermoplastic resin, and its type and properties are not particularly limited, but from the viewpoint of processability, polyolefin resins are preferred, similar to the core material mentioned above. The surface material and the core material may be the same or different. The thickness of the surface material is not particularly limited and can be set as appropriate depending on the application and purpose. However, if it is necessary to seal the ends, it is preferable to set the thickness of the surface material to 500 μm or more in order to ensure the adhesive strength of the sealed part and the rigidity of the ends.

[0033] Figures 3-6 are exploded perspective views showing examples of the configuration of a hollow resin plate to be processed, and Figures 7A and 7B show examples of end processing of a hollow resin plate. As the hollow resin plate 2 processed by the end processing device 1 of this embodiment, for example, as shown in Figure 3, a configuration can be used in which surface materials 22 and 23 made of thermoplastic resin sheets are laminated on the recessed 211b side of a core material 21 formed by heat-sealing protrusions 211a protruding from a sheet 211 together. Alternatively, as shown in Figure 4, a hollow resin plate 2 may be used in which surface materials 22 and 23 made of thermoplastic resin sheets are laminated on both the upper and lower surfaces of a core material 24 in which prismatic independent hollow portions 24a are arranged adjacent to each other by vertical walls.

[0034] Furthermore, as shown in Figure 5, the hollow resin plate 2 may be configured such that surface materials 22 and 23 made of thermoplastic resin sheets are laminated on both sides of a core material 25 made of a sheet having multiple hollow protrusions 25a formed on one side, or as shown in Figure 6, the hollow resin plate 2 may be configured such that surface materials 22 and 23 are laminated on both sides of a core material 26 made of a sheet having protrusions 26a and recesses 26b formed in a groove shape (a sheet with groove-shaped protrusions formed on both sides). Note that Figures 3 to 6 show hollow resin plates in which surface materials are laminated on both sides of the core material, but the present invention is not limited to this, and it is sufficient that the surface material is laminated on at least one side.

[0035] Furthermore, the shape of the end face processed by the end face processing device 1 of this embodiment is not particularly limited, as long as it can be shaped using a mold. Moreover, the end of the hollow resin plate 2 after processing may be sealed as shown in Figure 7A, or it may be left open and unsealed as shown in Figure 7B.

[0036] [Operation] Next, the operation of the end-face processing apparatus of this embodiment will be described. Figures 8 to 13 show the operation of the end-face processing apparatus of this embodiment. When processing the end face of a hollow resin plate 2 using the end-face processing apparatus 1 of this embodiment, first, as shown in Figure 1, the hollow resin plate 2 to be processed is placed on the table 11 and the operation of the end-face processing apparatus 1 is started.

[0037] As a result, as shown in Figure 8, the processing unit moves so that the preheating unit 12 is positioned at the same height as the hollow resin plate 2, and the table 11 moves horizontally toward the processing unit 10, bringing the edge of the hollow resin plate 2 closer to the preheating unit 12. In this state, the edge of the hollow resin plate 2 is preheated for a predetermined time by a heating device such as a heater provided in the preheating unit 12. At this time, since it is necessary to heat the edge of the hollow resin plate 2 directly, the release sheet 16 is not interposed and is kept above the resin plate 2.

[0038] After preheating is complete, as shown in Figure 9, the table 11 is retracted and the first position adjustment unit 19a is operated to lower the release sheet 16. At this time, the release sheet 16 is waiting above and inside the end face of the hollow resin plate 2, so if it is lowered as is, it will only fall onto the hollow resin plate 2 and will not be able to cover the end face. Therefore, in the end processing device 1 of this embodiment, the second position adjustment unit 19b pushes the central part of the release sheet 16 towards the processing unit 10. As a result, the release sheet 16 is inserted between the heating mold of the heating molding unit 13 and the end of the hollow resin plate 2.

[0039] Next, as shown in Figure 10, the processing unit 10 is raised so that the heating mold of the heating molding section 13 is at the same height as the hollow resin plate 2. Then, the table 11 is moved horizontally toward the heating molding section 13, and the end of the hollow resin plate 2 is pressed into the recess of the heating mold via the release sheet 16 and pressurized. At this time, in the end processing device 1 of this embodiment, the tension on the release sheet 16 is relieved by the spring material 18, so that the release sheet 16 is not damaged and is pressed into the recess of the heating mold following the end of the hollow resin plate 2.

[0040] Furthermore, the processing conditions in the heat molding section 13 (such as the speed at which it is brought close, the distance at which it is pressed, and the holding time) can be appropriately set according to the thickness and structure of the hollow resin plate 2, the type of resin, the desired shape and weight of the end, and the ambient temperature. However, from the viewpoint of ensuring the smoothness of the processed end surface, it is preferable to set the temperature of the heating mold to 185-195°C.

[0041] After heat molding, as shown in Figure 11, the table 11 is retracted to remove the end of the hollow resin plate 2 from the heating mold, and the processing unit 10 is raised so that the cooling mold of the cooling section 14 is at the same height as the hollow resin plate 2. At this time, the release sheet 16 is automatically moved upward by the first position adjustment section 19a and the spring material 18. However, if the release sheet 16 is peeled off at this point, resin residue may occur, so the release sheet 16 is left attached to the end of the hollow resin plate 2.

[0042] Next, as shown in Figure 12, the table 11 is moved horizontally toward the cooling section 14, and the end of the hollow resin plate 2 is pressed against the recess of the cooling mold via the release sheet 16, thereby applying pressure. At this time, in the end processing device 1 of this embodiment, the tension on the release sheet 16 is relieved by the spring material 18, so that the release sheet 16 is not damaged and follows the end of the hollow resin plate 2 and is pressed into the recess of the cooling mold.

[0043] In the cooling section 14, for example, by pressing the hollow resin plate 2 against a cooling mold at room temperature (10-35°C) for about 5-10 seconds, the surface temperature of the hollow resin plate 2 is reduced to about 50-70°C. Note that the cooling conditions in the cooling section 14 are not limited to the range described above; it is sufficient to cool the surface temperature of the hollow resin plate 2 to approximately 70°C or below. This improves the release properties of the release sheet 16.

[0044] Subsequently, as shown in Figure 13, the table 11 is retracted to remove the end of the hollow resin plate 2 from the cooling mold. At this time, the release sheet 16 peels off from the end of the hollow resin plate 2 and is automatically returned to its initial position above the hollow resin plate 2 by the first position adjustment unit 19a and the spring material 18. Since there is no resin adhesion or residue on the release sheet 16 that has peeled off from the hollow resin plate 2, it can be used as is for the next processing without replacement.

[0045] Although the above operations may be performed manually, the end processing device 1 may be equipped with a control unit that controls the preheating unit 12, the heat molding unit 13, the cooling unit 14, and the release sheet insertion and peeling mechanism 15, thereby automatically processing the ends of the hollow resin plate 2.

[0046] As described in detail above, the end-face processing apparatus of this embodiment is configured such that the end of the hollow resin plate is heated and cooled via a release sheet. Therefore, when processing the end of the hollow resin plate into a predetermined shape, the occurrence of release defects and molding defects is suppressed, and an end face with excellent surface quality can be formed. Furthermore, in the end-face processing apparatus of this embodiment, the release sheet is not removed after heating and molding, but only after cooling, so there is no resin adhesion or residue, and the surface quality of the processed surface is improved. Moreover, since preheating is performed before heating and molding in the end-face processing apparatus of this embodiment, the formability is excellent, and a curved surface with excellent surface quality can be formed on the end of the hollow resin plate 2.

[0047] Furthermore, the end processing apparatus of this embodiment can also be incorporated into the manufacturing process of hollow resin sheets. Specifically, the apparatus for manufacturing hollow resin sheets with ends processed to a predetermined shape may be configured to include a table 11 on which the hollow resin substrate before end processing is placed, a preheating unit 12 for preheating the ends of the hollow resin substrate, a heating and molding unit 13 for processing the ends of the preheated hollow resin substrate into a predetermined shape using a heating mold, a cooling unit 14 for cooling the processed ends of the hollow resin substrate using a cooling mold, and a release sheet insertion and peeling mechanism 15 that inserts a release sheet 16 between the hollow resin substrate and the heating mold in the heating and molding unit 13 and peels the release sheet 16 from the cooled hollow resin substrate in the cooling unit 14, so that the ends of the hollow resin substrate are heated and cooled via the release sheet. In this case as well, the same effects as the end processing apparatus described above can be obtained. [Explanation of Symbols]

[0048] 1 Edge processing device 2 Hollow resin plate 10 Processing Units 11 Tables 12 Preheating section 13 Heat forming section 14 Cooling section 15 Release sheet insertion and peeling mechanism 16 Release sheet 17a, 17b Holding part 18 Spring material 19a, 19b Position adjustment section 21, 24, 25, 26 Core material 22, 23 Surface material 24a Independent hollow part 25a, 26a, 211a, 251a Convex parts 26b, 211b recess 131a, 131b, 131c molds 211, 251 seats

Claims

1. An end-processing device for processing the end of a hollow resin plate into a predetermined shape, A table on which the hollow resin plate to be processed is placed, A preheating section for preheating the end of the hollow resin plate, A heating molding section that processes the edges of a hollow resin plate into a predetermined shape after preheating using a heating mold, A cooling section that cools the end of the processed hollow resin plate with a cooling mold, The heat molding section inserts a release sheet between the hollow resin plate and the heating mold, and the cooling section peels the release sheet from the hollow resin plate after cooling, and the release sheet insertion and peeling mechanism It has, The release sheet insertion and peeling mechanism comprises a first holding part that holds the upper end of the release sheet, a second holding part that holds the lower end of the release sheet, a first position adjustment part connected to the first holding part via a spring material to adjust the vertical position of the release sheet, and a second position adjustment part that adjusts the front-rear position of the release sheet, and is installed in the area directly above the end of the hollow resin plate. An end-processing apparatus for hollow resin plates, wherein the end of the hollow resin plate is heated and cooled via the release sheet.

2. The end-processing apparatus for a hollow resin plate according to claim 1, wherein the release sheet is a fluororesin sheet.

3. The preheating section, the heating and molding section, and the cooling section are arranged in the height direction within a processing unit that can be raised and lowered vertically. The table moves horizontally in a direction toward or toward the processing unit. The end processing apparatus for a hollow resin plate according to claim 1 or 2.

4. The system includes a preheating unit, a heat molding unit, a cooling unit, and a control unit that controls the release sheet insertion and peeling mechanism. An end-processing apparatus for a hollow resin plate according to any one of claims 1 to 3, which automatically processes the end of the hollow resin plate.

5. The hollow resin plate is, (1) A configuration in which a surface material made of a thermoplastic resin sheet is laminated on at least one surface of a core material made of a sheet having multiple hollow protrusions formed on at least one surface, (2) A configuration in which a surface material made of a thermoplastic resin sheet is laminated on at least one concave side of a core material formed by heat-sealing protrusions on a sheet together with the protrusions facing each other, or (3) A configuration in which a core material is formed by prism-shaped independent hollow sections arranged adjacent to each other by vertical wall sections, and surface materials are laminated on both the upper and lower surfaces of the core material. An end-processing apparatus for a hollow resin plate according to any one of claims 1 to 4.

6. An apparatus for manufacturing hollow resin plates whose ends are processed to a predetermined shape, A table on which the hollow resin substrate before end processing is placed, A preheating section for preheating the end of the hollow resin substrate, A heating molding section that processes the ends of a hollow resin substrate into a predetermined shape after preheating using a heating mold, A cooling section that cools the end of the processed hollow resin substrate with a cooling mold, The heat molding section includes a release sheet insertion and peeling mechanism that inserts a release sheet between the hollow resin substrate and the heating mold, and the cooling section includes a release sheet insertion and peeling mechanism that peels the release sheet from the hollow resin substrate after cooling. It has, The release sheet insertion and peeling mechanism comprises a first holding part that holds the upper end of the release sheet, a second holding part that holds the lower end of the release sheet, a first position adjustment part connected to the first holding part via a spring material to adjust the vertical position of the release sheet, and a second position adjustment part that adjusts the front-rear position of the release sheet, and is installed in the area directly above the end of the hollow resin substrate. A manufacturing apparatus for hollow resin plates, wherein the ends of the hollow resin substrate are heated and cooled via the release sheet.

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