Lamination molding method

Abstract

To perform temperature adjustment of a hot plate at low cost.SOLUTION: A lamination molding apparatus includes: a pair of hot plates consisting of an upper hot plate 22 arranged above a workpiece transported in a front-rear direction and arranged so that a lower surface presses the workpiece, and a lower hot plate 24 arranged below the workpiece transported in the front-rear direction and arranged so that an upper surface presses the workpiece; heaters 25a, 25b that are inserted into the respective hot plates 22, 24, extend parallel to a surface that contacts the workpiece, extend in a direction different from the workpiece transporting direction, and have ends protruding from the left and right side surfaces of the hot plates 22, 24; and heat insulating portions 26a, 26b that cover at least a part of the left and right side surfaces, at each of the hot plates 22, 24. The heat insulating portions 26a, 26b cover the left and right side surfaces of the hot plates 22, 24 while avoiding interference with the heaters 25a, 25b protruding from the ends of the hot plates 22, 24, respectively.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a lamination molding apparatus and a lamination molding system. [Background technology]

[0002] In recent years, a lamination molding system has been used in which a vacuum lamination device equipped with a decompressible chamber, a first flattening press device, and a second flattening press device are arranged in series. In this lamination molding system, a laminate molded product is laminate molded while being moved by a transfer means from the vacuum lamination device to the first flattening press device, and from the first flattening press device to the second flattening press device.

[0003] Patent Document 1 discloses a lamination molding system in which a vacuum lamination device (vacuum pressure laminator) equipped with a chamber capable of reducing pressure and a press device are arranged in series.

[0004] Patent Document 2 also discloses a laminate molding system in which a vacuum lamination means equipped with a decompressible chamber, a first flat press means, and a second flat press means are arranged in series. In particular, Patent Document 2 describes the strength of pressure applied to the work by the vacuum lamination means and the time for which pressure is applied when a laminate molded product is moved from the vacuum lamination device to the first flattening press device and from the first flattening press device to the second flattening press device using a transfer means. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2005-66967 A [Patent Document 2] JP 2020-28980 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the vacuum lamination device, the workpiece is heated by sandwiching it between hot plates provided on the upper and lower sides. Here, the hot plate is provided with a plurality of heaters extending in a direction that is approximately horizontal and approximately perpendicular to the direction of transport of the workpiece, and the temperature of the hot plate is adjusted so that the temperature of the hot plate can be suitably performed by heating with the heaters. However, with these hot plates, heat is easily lost in the direction in which the heaters extend, and there is a risk that this loss of heat will increase the variation in the in-plane temperature during lamination. Therefore, in the lamination molding device, it is desired to perform the temperature adjustment of the hot plate for heating the workpiece at low cost. [Means for solving the problem]

[0007] The laminated molding device according to the present disclosure includes a pair of hot plates, each of which includes an upper hot plate arranged above a workpiece transported in a forward-rearward direction and arranged so that its lower surface presses against the workpiece, and a lower hot plate arranged below the workpiece transported in the forward-rearward direction and arranged so that its upper surface presses against the workpiece; a heater inserted into each of the hot plates, which is parallel to the surface that contacts the workpiece and extends in a direction different from the transport direction of the workpiece, and whose ends protrude from the left and right side surfaces; and a heat insulating section covering at least a part of the left and right side surfaces of each of the hot plates, the heat insulating section covering the left and right side surfaces of the hot plates while avoiding interference with the heater protruding from the end of each of the hot plates.

[0008] In addition, the laminated molding device according to the present disclosure comprises a pair of hot plates, the upper hot plate being arranged above the workpiece that is transported in the front-rear direction, and the lower hot plate being arranged so that the lower surface presses the workpiece, and the lower hot plate being arranged below the workpiece that is transported in the front-rear direction, and the upper surface being arranged so that the upper hot plate is pressed against the workpiece; and the left-right moving hot plate being arranged on a straight line in the left-right direction with respect to the upper hot plate and the lower hot plate, and being at the height between the upper hot plate and the lower hot plate, and being the hot plate that moves in the left-right direction.The left-right moving hot plate is heated at the position that is not sandwiched between the upper hot plate and the lower hot plate, and when the workpiece is not between the upper hot plate and the lower hot plate, it moves in the left-right direction to the position that is sandwiched between the upper hot plate and the lower hot plate, and is in a state of being in contact with the lower surface of the upper hot plate and the upper surface of the lower hot plate, thereby supplementing the heat of the upper hot plate and the lower hot plate.

[0009] The laminated molding system according to the present disclosure includes a laminated molding device, and at least one flattening press device that is provided at the rear of the laminated molding device and applies further pressure to the workpiece molded by the laminated molding device. The laminated molding device includes a pair of hot plates, each of which includes an upper hot plate arranged above the workpiece transported in the front-rear direction and arranged so that its lower surface presses the workpiece, and a lower hot plate arranged below the workpiece transported in the front-rear direction and arranged so that its upper surface presses the workpiece. The laminated molding device includes a heater that is inserted into each of the hot plates, extends parallel to the surface that contacts the workpiece and in a direction different from the transport direction of the workpiece, and has its ends protruding from the left and right side surfaces of the hot plate, and a heat insulating section that covers at least a part of the left and right side surfaces of each of the hot plates, and the heat insulating section covers the left and right side surfaces of the hot plate while avoiding interference with the heater protruding from the end of each of the hot plates. Effect of the Invention

[0010] According to the present disclosure, the temperature regulation of the hot plate can be performed at low cost. [Brief description of the drawings]

[0011] [Figure 1]1 is a block diagram showing an example of a configuration of a vacuum lamination system according to a first embodiment. [Diagram 2] FIG. 1 is a perspective view of a vacuum lamination apparatus according to a first embodiment. [Diagram 3] 1 is a side view showing a state in which the laminate molded product according to the first embodiment is sandwiched between carrier films and transported. FIG. [Figure 4] FIG. 2 is a cross-sectional view showing an example of a horizontal cross section of an upper hot plate 22 according to the first embodiment. [Diagram 5] FIG. 2 is a side view showing a state in which a heat insulating part having a protrusion extending downward is provided on an upper hot plate on which a plurality of heaters are provided according to the first embodiment. [Figure 6] FIG. 2 is a side view showing a state in which a heat insulating part having a protrusion extending upward is provided on an upper hot plate on which a plurality of heaters are provided according to the first embodiment. [Figure 7] FIG. 2 is a side view showing a state in which a heat insulating part having a protrusion extending long downward is provided on the upper hot plate according to the first embodiment. [Figure 8] FIG. 2 is a front view showing a state in which a path is formed in the heat insulating section according to the first embodiment. [Figure 9] FIG. 2 is a cross-sectional view of an upper hot plate and a heat insulating part according to the first embodiment. [Figure 10] 1 is a side view showing a state in which a chamber and an outer chamber insulation part according to a first embodiment are provided. FIG. [Figure 11] FIG. 11 is a top view showing an example of the arrangement and operating direction of a left-right moving heat plate according to the second embodiment. [Figure 12] FIG. 11 is a side view showing an example of the operation timing of the laminated molded product and the left-right moving heat plate according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Specific embodiments will be described in detail below with reference to the drawings. However, the present invention is not limited to the following embodiments. In addition, the following description and drawings are appropriately simplified to clarify the explanation. In addition, hatching is omitted in some parts to avoid cluttering the drawings.

[0013] First embodiment 1 is a block diagram showing an example of the configuration of a vacuum lamination system. The lamination molding system 11 includes a vacuum lamination device 12 having a decompressible chamber, a first flattening press device 13, and a second flattening press device 14, which are arranged in series. In the lamination molding system 11, a laminated molded product P, which is a workpiece, is transferred from the vacuum lamination device 12 to the first flattening press device 13, and from the first flattening press device 13 to the second flattening press device 14.

[0014] In the vacuum lamination system, carrier films F1 and F2 can be used to transport the laminated product P. More specifically, in the vacuum lamination system, a carrier film delivery device as a transport means is provided in a process upstream of the vacuum lamination device 12, and a carrier film winding device as a transport means is provided in a process downstream of the second flattening press device 14. The film winding device can wind up the carrier film to move the carrier films F1 and F2, and can transport the laminated product P together with the movement of the carrier films F1 and F2. In this case, the carrier film F1 is disposed above the laminated product P, and the carrier film F2 is disposed below the laminated product P, sandwiching the laminated product P therebetween.

[0015] Here, the laminated product P is composed of a substrate having projections and recesses and a laminated film. When laminated molding is performed on the laminated product P through carrier films F1 and F2 in the vacuum lamination device 12, the first flattening press device 13, and the second flattening press device 14 in that order, the laminated film is prevented from melting and adhering to the device parts. The use of the carrier films F1 and F2 also has the advantage that a certain cushioning effect is imparted when pressurizing the laminated products (the first laminated product and the second laminated product) particularly in the first flattening press device 13 and the second flattening press device 14.

[0016] Fig. 2 is a perspective view of the vacuum lamination device 12. Although the laminated molded product P is transported horizontally, the direction in which the laminated molded product P is transported is defined as the front-rear direction, and the horizontal direction and a direction perpendicular to the front-rear direction is defined as the left-right direction. In Fig. 2, the chamber C is omitted in order to make the vacuum lamination device 12 easier to understand.

[0017] The vacuum lamination device 12 pressurizes the laminated product P in a decompressible chamber C, and laminates it into a primary laminated product. The vacuum lamination device 12 includes an upper base 21, an upper hot plate 22 attached to the lower surface of the upper base 21, a lower base 23, a lower hot plate 24 attached to the lower base 23, heaters 25 provided on the upper hot plate 22 and the lower hot plate 24, and heat insulating parts 26 provided on the left and right side surfaces of the upper hot plate 22 and the lower hot plate 24. The laminated product P is intermittently supplied to the vacuum lamination device 12.

[0018] In addition, the upper hot plate 22 and the lower hot plate 24 are a pair of hot plates, and the heater 25 provided on the upper hot plate 22 is referred to as heater 25a, the heater 25 provided on the lower hot plate 24 is referred to as heater 25b, the heat insulating part 26 provided on the upper hot plate 22 is referred to as heat insulating part 26a, and the heat insulating part 26 provided on the lower hot plate 24 is referred to as heat insulating part 26b.

[0019] The upper base 21 is provided on the upper part of the vacuum lamination device 12. Here, the upper base 21 is described as a rectangular parallelepiped plate (fixed plate) having a predetermined thickness in the vertical direction. The upper surface of the upper hot plate 22 is attached to the lower surface of the upper base 21 in abutting contact therewith.

[0020] The upper hot plate 22 is a plate in which a plurality of heaters 25a are inserted in a state of extending in the left-right direction.Here, the upper hot plate 22 has a certain thickness in the top and bottom, and is a rectangular parallelepiped shape with a side that extends in the front-back direction and a side that extends in the left-right direction.In addition, other components may be sandwiched between the upper base 21 and the upper hot plate 22.

[0021] Furthermore, on the left and right side surfaces of the upper hot plate 22, heat insulating portions 26a are arranged, which extend in the front-rear direction.

[0022] The lower base 23 is provided at the bottom of the vacuum lamination device 12. The lower surface of the lower hot plate 24 is attached to the upper surface of the lower base 23 in a state of contact. For example, the lower base 23 can be composed of a rectangular parallelepiped plate (movable plate) having a certain thickness in the vertical direction and a plurality of tie bars inserted into the plate. In this case, the lower surface of the lower hot plate 24 is attached to the upper surface of the lower base 23 in a state of being placed on it.

[0023] The lower hot plate 24 is a plate in which a plurality of heaters 25b are inserted in a state of extending in the left-right direction.Here, the upper hot plate 22 has a certain thickness in the top and bottom, and is a rectangular parallelepiped shape with a side that extends in the front-back direction and a side that extends in the left-right direction.In addition, other components may be sandwiched between the lower base 23 and the lower hot plate 24.

[0024] For example, in the case where the tie bar is inserted through the lower base 23, the lower base 23 is raised so that the distance between the upper base 21 and the lower base 23 is reduced, so that the lower hot plate 24 can be brought closer to the upper hot plate 22. By this operation, the lower surface of the upper hot plate 22 presses the upper surface of the laminated product P, and the upper surface of the lower hot plate 24 presses the lower surface of the laminated product P.

[0025] Furthermore, on the left and right side surfaces of the lower hot plate 24, heat insulating portions 26b are arranged, which extend in the front-rear direction.

[0026] Fig. 3 is a diagram showing a state in which the laminated molded product P is sandwiched between carrier films F1 and F2 and transported. That is, as shown in Fig. 3, the laminated molded product P is transported between the upper hot plate 22 and the lower hot plate 24 while being sandwiched between the upper and lower carrier films F1 and F2. Therefore, the upper hot plate 22 is disposed above the laminated molded product P transported in the front-rear direction, and the lower hot plate 24 is disposed below the laminated molded product P. Furthermore, as the upper hot plate 22 and the lower hot plate 24 approach each other, the upper hot plate 22 comes into contact with the upper surface of the laminated molded product P through the carrier film F1, and the lower hot plate 24 comes into contact with the lower surface of the laminated molded product P through the carrier film F2.

[0027] Returning to Fig. 2, heater 25a is a heater that extends in the left-right direction and is inserted into upper hot plate 22. Here, heater 25a is provided in a state where its end protrudes from the left-right side of upper hot plate 22. Heater 25a supplies heat to heat upper hot plate 22 until it reaches a predetermined temperature.

[0028] Similarly, heater 25b is a heater that extends in the left-right direction and is inserted into lower hot plate 24. Here, heater 25b is provided in a state where its end protrudes from the left-right side of lower hot plate 24. Heater 25b can heat lower hot plate 24 to a predetermined temperature by supplying heat.

[0029] That is, the heaters 25a and 25b are inserted through the heat plates 22 and 24, respectively, extend parallel to the surface that contacts the laminated molded product P and in a direction different from the conveying direction of the laminated molded product P, and are arranged so that their ends protrude from the left and right side surfaces of the heat plates 22 and 24.

[0030] Here, Fig. 4 is a diagram showing an example of the horizontal cross section of the upper hot plate 22. As shown in Fig. 4, when the upper hot plate 22 is heated, heat is easily released in the direction in which the heater 25a extends. The same is true for the lower hot plate 24.

[0031] Fig. 5 is a side view showing the state where the heat insulating part 26a is provided on the upper hot plate 22 on which a plurality of heaters 25a are provided. As shown in Fig. 5, the heat insulating part 26a has a length in the vertical direction approximately equal to the thickness of the upper hot plate 22, is formed with a certain thickness in the horizontal direction, and is formed long in the front-rear direction, and covers the side surface of the upper hot plate 22. Here, since the ends of the plurality of heaters 25a protrude from the side surface of the upper hot plate 22, the heat insulating part 26a is formed in a comb shape so as not to interfere with the ends of the heaters 25a.

[0032] More specifically, the insulating portion 26a is formed into a comb shape by having a straight portion 31 that is long in the front-to-rear direction and a plurality of protruding portions 32 that protrude in the up-down direction from the straight portion 31.

[0033] Here, as shown in Fig. 5, the heat insulating part 26a can be configured such that a straight line part 31 is provided on the upper side of the side surface of the upper hot plate 22, and a plurality of protrusions 32 protrude downward from the straight line part 31. In Fig. 5, the range of the straight line part 31 is indicated by a broken line.

[0034] On the other hand, as shown in Fig. 6, the heat insulating part 26a may be formed such that a straight line part 31 is provided on the lower side of the side surface of the upper hot plate 22, and a plurality of protrusions 32 protrude upward from the straight line part 31. In Fig. 6, the range of the straight line part 31 is indicated by a broken line.

[0035] Furthermore, as shown in Fig. 7, the heat insulating part 26a can be elongated in the vertical direction so that it protrudes downward from the lower surface 22a of the upper hot plate 22 when it is arranged on the side surface of the upper hot plate 22. In Fig. 7, the range of the straight line part 31 is shown by a broken line. In this way, the heat insulating part 26a is formed so as to protrude downward from the lower surface 22a of the upper hot plate 22, so that when the upper hot plate 22 and the lower hot plate 24 are sandwiched in a state where they are in contact with the laminated molded product P, it is possible to suppress the escape of heat from the side surface of the laminated molded product P, that is, the gap between the upper hot plate 22 and the lower hot plate 24. In Fig. 7, the straight line part 31 is shown in the upper position and the protruding part 32 is shown in the lower position as in Fig. 5, but the straight line part 31 may be shown in the lower position and the protruding part 32 may be shown in the upper position as in Fig. 6.

[0036] The same is true for the heat insulating part 26b that is provided on the side of the lower hot plate 24. That is, the heat insulating part 26b has a length that is approximately the same as the thickness of the lower hot plate 24 in the vertical direction, is formed with a certain thickness in the left-right direction, and is formed long in the front-rear direction, and covers the side of the lower hot plate 24.

[0037] The heat insulating portion 26b may be shaped such that a straight portion 31 is provided on the lower side of the side surface of the lower hot plate 24, and a plurality of protrusions 32 protrude upward from the straight portion 31.

[0038] On the other hand, the heat insulating portion 26b may be shaped so that a straight portion 31 is provided on the upper side of the side surface of the lower hot plate 24, and a plurality of protrusions 32 protrude downward from the straight portion 31.

[0039] Furthermore, the heat insulating portion 26b can be formed long in the vertical direction on the side surface of the lower hot plate 24 so as to protrude upward from the upper surface of the lower hot plate 24.

[0040] In addition, on the side of the upper hot plate 22, a part of the heat insulating part 26a protrudes downward from the lower surface of the upper hot plate 22, and on the side of the lower hot plate 24, a part of the heat insulating part 26b protrudes upward from the upper surface of the lower hot plate 24. Either one of these may be performed, or both may be performed.

[0041] To sum up, the heat insulating part 26a that covers the side of the upper hot plate 22 can be in at least one of the following states: when the straight part 31 is arranged on the upper side and the protruding part 32 is arranged on the lower side, the tip of the protruding part 32 is arranged below the lower surface of the upper hot plate 22; when the heat insulating part 26 that covers the side of the lower hot plate 24 is arranged on the lower side and the straight part 31 is arranged on the lower side and the protruding part 32 is arranged on the upper side, the tip of the protruding part 32 is arranged above the upper surface of the lower hot plate 24.

[0042] Alternatively, the heat insulating part 26a that covers the side of the upper hot plate 22 can be at least one of the following: when the straight part 31 is arranged downward and the protruding part 32 is arranged upward, the lower end of the straight part 31 is arranged below the lower surface of the upper hot plate 22; and when the heat insulating part 26b that covers the side of the lower hot plate 24 is arranged upward and the protruding part 32 is arranged downward, the upper end of the straight part 31 is arranged above the upper surface of the lower hot plate 24.

[0043] The material of the insulating material applied to the insulating portions 26a and 26b is not particularly limited, but may be paper, cloth, or glass cloth impregnated with resin, or a material obtained by bonding minerals such as mica or ceramic materials with resin or the like.

[0044] Furthermore, the structure and material of the heat insulating parts 26a, 26b are not particularly limited as long as they are a method of increasing the heat retention during lamination molding. The heat insulating parts 26a, 26b may have a cavity shape or a hollow structure. The heat insulating parts 26a, 26b may have a structure with a reduced pressure space. In this case, in consideration of the cooling property after lamination molding, it is desirable that the reduced pressure space has a mechanism capable of adjusting the air pressure. The heat insulating parts 26a, 26b may have a temperature adjustment function. Here, as shown in FIG. 8, the heat insulating parts 26a, 26b have a path 26c formed therein through which a fluid of a predetermined temperature can pass, and the temperature of the heat insulating parts 26a, 26b can be adjusted by passing the fluid. In this case, in consideration of the cooling property after lamination molding, it is desirable that the fluid to be temperature adjusted can be not only heated but also cooled. The method of temperature adjustment is not limited to this method.

[0045] 9 is a cross-sectional view showing an example of the configuration of the upper hot plate 22 and the heat insulating part 26a, which is a cross-sectional view in a direction perpendicular to the front-rear direction. As shown in FIG. 9, the heat insulating part 26a can be configured to include a heat insulating material 33 and a metal material 34.

[0046] In the heat insulating part 26a covering the side surface of the upper hot plate 22, the metal material 34 is arranged on the outside in the left-right direction, and the heat insulating material 33 is arranged on the inside of the metal material 34. That is, the heat insulating material 33 is arranged so as to be sandwiched between the upper hot plate 22 and the metal material 34. The heat insulating material 33 can improve the heat retention of the upper hot plate 22 by absorbing heat. Typically, the heat insulating material 33 is formed thicker than the metal material 34. Here, in the present disclosure, the heat absorbing heat insulating material 33 means that the heat conductivity is smaller than that of the metal member that constitutes the upper hot plate 22. The method of measuring the heat conductivity is not particularly limited, and may be, for example, a method according to ASTM E1530.

[0047] The metal material 34 can further improve the heat retention of the upper hot plate 22 by reflecting the heat from the upper hot plate 22 side to the heat insulating material 33 side. As a more specific example, the metal material 34 can reflect the heat that reaches the metal material 34 from the upper hot plate 22 through the heat insulating material 33 toward the heat insulating material 33. The metal material 34 may be any of iron, aluminum, and copper, and may be an alloy containing at least one of these metals. The reflection of heat by the metal material 34 may be at least a part of the heat propagated or radiated from the upper hot plate 22 side. In addition, the surface state of the metal material 34 is not particularly limited, but the surface facing the heat insulating material 33 is preferably smooth, and more preferably finished with a mirror surface. In addition, the shape of the metal material 34 is not particularly limited, and may be different from the shape of the heat insulating material 33. In other words, the metal material 34 may be arranged so as to cover at least a part of the heat insulating material 33. The area of ​​the metal material 34 covering the heat insulating material 33 is preferably 30 percent or more of the area of ​​that face of the heat insulating material 33, and more preferably 50 percent or more.

[0048] Although a configuration example of the heat insulating portion 26a covering the side surface of the upper hot plate 22 has been described with reference to FIG. 9, the heat insulating portion 26b covering the side surface of the lower hot plate 24 is similar.

[0049] FIG. 10 is a side view showing a chamber 41 that is composed of an upper chamber 41a and a lower chamber 41b and that is capable of reducing the pressure of the internal space formed by the upper chamber 41a and the lower chamber 41b, and an external chamber insulation section 42 that is arranged on the outside of the chamber 41.

[0050] At least one of the upper chamber 41a and the lower chamber 41b can move up and down, and by moving toward each other, they form a closed space that contains the upper base 21, the upper heat plate 22, the lower base 23, the lower heat plate 24, the heater 25, and the insulation section 26.

[0051] The chamber external insulation part 42 is arranged to cover at least a part of the outer side surface of the upper chamber 41a in the front-rear direction. Typically, the chamber external insulation part 42 is arranged to cover the outer side surface of the upper chamber 41a in the front-rear direction near the lower end part that abuts against the lower chamber 41b.

[0052] The chamber external insulation part 42 may be arranged so as to cover at least a part of the outer side surface of the lower chamber 41b in the front-rear direction. In this case, similar to the case where the chamber external insulation part 42 is provided on the outer side surface of the upper chamber 41a, the chamber external insulation part 42 is arranged so as to cover the outer side surface of the lower chamber 41b in the front-rear direction near the upper end part.

[0053] The chamber outer insulation section 42 may have a functional section 42a for heating or cooling, which suppresses deformation of the upper chamber 41a and the lower chamber 41b and maintains a suitable degree of vacuum within the chamber 41.

[0054] Returning to Fig. 1, the first flattening press device 13 has a pressure surface of a metal press plate. Typically, in the first flattening press device 13, a driving force from a servo motor is applied to the pressure surface of the metal press plate to pressurize the laminated molded product P. The first flattening press device 13 further pressurizes the laminated molded product P (primary laminated molded product) that is pressure molded in the vacuum lamination device 12 and is made of a substrate and a laminated film having uneven parts, with unevenness remaining on the laminated film side, to pressure mold it into a flatter laminated molded product P (secondary laminated molded product).

[0055] The second flattening press device 14 is a press device having the same structure and the same pressing mechanism as the first flattening press device 13. The same structure and the same pressing mechanism include a substantially same structure and a substantially same pressing mechanism. That is, the second flattening press device 14 has a pressing surface of a metal press plate. Typically, in the second flattening press device 14, a driving force is applied by a servo motor to the pressing surface of the metal press plate, and the laminate molded product P is pressed.

[0056] By configuring in this way, the vacuum lamination device 12 can suppress the heat loss that passes through the side direction of the upper hot plate 22 and the lower hot plate 24. Therefore, the amount of heat that is used when reheating the upper hot plate 22 and the lower hot plate 24 can be reduced, and the temperature adjustment of the hot plate can be performed at low cost.

[0057] Embodiment 2 A configuration further including a left-right moving hot plate 27 for supplying heat to the upper hot plate 22 and the lower hot plate 24 will be described.

[0058] As shown in Fig. 11, the left-right moving hot plate 27 is arranged on the left-right straight line with respect to the upper hot plate 22 and the lower hot plate 24, and is a hot plate that moves left-right.The vertical position where the left-right moving hot plate 27 is arranged is between the upper hot plate 22 and the lower hot plate 24.

[0059] The horizontally movable hot plate 27 is a plate whose front-rear and left-right length is the same as that of the upper hot plate 22 and the lower hot plate 24. Therefore, the horizontally movable hot plate 27 can be switched between the state of being sandwiched between the upper hot plate 22 and the lower hot plate 24 and the state of being disposed out of the position between the upper hot plate 22 and the lower hot plate 24 by sliding in the left-right direction.

[0060] Here, the laminated molded product P is intermittently and continuously supplied to the vacuum lamination device 12. Fig. 12(a) shows the state where the laminated molded product P is arranged between the upper hot plate 22 and the lower hot plate 24. When the laminated molded product P is arranged between the upper hot plate 22 and the lower hot plate 24, the left-right moving hot plate 27 slides left-right as shown in Fig. 11, and is arranged at a position out of the space between the upper hot plate 22 and the lower hot plate 24.

[0061] At this time, the horizontally movable hot plate 27 is supplied with heat by a heating mechanism (not shown) and reaches a predetermined temperature. The heating mechanism can heat the horizontally movable hot plate 27 so that the temperature of the lower part is higher than the temperature of the upper part.

[0062] After that, as shown in Fig. 12(b), the laminated molded product P is transported, and the laminated molded product P is not sandwiched between the upper hot plate 22 and the lower hot plate 24. At this time, as shown in Fig. 11, the left-right moving hot plate 27 slides left-right. As a result, as shown in Fig. 12(c), the left-right moving hot plate 27 is arranged at a position sandwiched between the upper hot plate 22 and the lower hot plate 24.

[0063] At this time, the lower surface of the upper hot plate 22 contacts the upper surface of the left-right moving hot plate 27, and the upper surface of the lower hot plate 24 contacts the lower surface of the left-right moving hot plate 27. Because the left-right moving hot plate 27 is in a fully heated state, heat is transferred from the left-right moving hot plate 27 to the upper hot plate 22 and the lower hot plate 24. As a result, the upper hot plate 22 and the lower hot plate 24 are heated by the left-right moving hot plate 27.

[0064] In addition, when heating by the left and right moving hot plate 27, the effect of heating the upper hot plate 22 may be large, and the effect of heating the lower hot plate 24 may be small.Therefore, when heating the left and right moving hot plate 27, the temperature of the lower part of the left and right moving hot plate 27 is heated so that it is higher than the temperature of the upper part, so that when the left and right moving hot plate 27 heats the upper hot plate 22 and the lower hot plate 24, the temperature difference between the upper hot plate 22 and the lower hot plate 24 can be suppressed.

[0065] In addition, when heating the left and right moving hot plate 27, the temperature difference between each part is not limited to the difference between the lower part and the upper part of the left and right moving hot plate 27. For example, it is also possible to set the temperature difference between the front and rear, left and right peripheral parts of the left and right moving hot plate 27 and the center part.

[0066] Thus, in vacuum lamination device 12, the heat of upper hot plate 22 and lower hot plate 24 is adjusted not only by heater 25 but also by left and right moving hot plate 27, so that upper hot plate 22 and lower hot plate 24 can be heated efficiently. That is, when laminated molded product P is not sandwiched between upper hot plate 22 and lower hot plate 24, the time that upper hot plate 22 and lower hot plate 24 are heated can be shortened, so that vacuum lamination device 12 can be operated efficiently and cost can be reduced.

[0067] The present invention is not limited to the above embodiment, and can be modified as appropriate without departing from the spirit of the present invention. For example, the same structure can be used when a preheating device is provided in front of the vacuum lamination device 12, which does not have a chamber and has an upper hot plate and a lower hot plate for preheating the laminated molded product P. That is, a comb-shaped heat insulating part can be provided on the left and right side of each of the upper and lower hot plates of the preheating device, or a left and right movable hot plate can be provided.

[0068] In addition, the chamber outer heat insulating part 42 described in embodiment 1 may not be provided in the vacuum lamination apparatus 12. Conversely, in the vacuum lamination apparatus 12 having the chamber outer heat insulating part 42 described in embodiment 1, the upper hot plate 22 and the lower hot plate 24 may be provided with heat insulating parts 26a, 26b or not.

[0069] The left-right moving hot plate 27 described in embodiment 2 is provided in the vacuum lamination device 12, while the upper hot plate 22 and the lower hot plate 24 of the vacuum lamination device 12 can be arbitrarily provided with or without the heat insulating part 26a, 26b. That is, the left-right moving hot plate 27 is provided in the vacuum lamination device 12, but the upper hot plate 22 and the lower hot plate 24 can be configured not to be provided with the heat insulating part 26a, 26b. [Explanation of symbols]

[0070] 11 Laminated molding system 12 Vacuum lamination equipment 13 First flattening press device 14 Second flattening press device 21 Upper base 22 Upper hot plate 23 Lower base 24 Lower heating plate 25 Heater 26 Insulation section 27 Left and right moving hot plate 31 Straight section 32 Protrusion 41 Chamber 42 Chamber outer insulation

Claims

1. An upper hot plate is disposed above the workpiece transported in the front-rear direction and disposed so that the lower surface presses against the workpiece; a lower hot plate disposed below the workpiece transported in the front-rear direction and disposed so that an upper surface of the lower hot plate presses against the workpiece; and pressing the workpiece with a pair of the hot plates. The heater is inserted into each of the hot plates, extends parallel to the surface pressing the workpiece and in a direction different from the conveying direction of the workpiece, and has ends protruding from the left and right side surfaces of the hot plate; At least one of the upper and lower hot plates has a heat insulating portion covering at least a part of the left and right side surfaces; The heat insulating portion covers the left and right side surfaces of the hot plate while avoiding interference with a heater protruding from an end of the hot plate. Laminated molding method.

2. The hot plate is provided with a metal plate on a surface of the hot plate facing the workpiece. The laminate molding method according to claim 1 .

Images