CN118721942A - Stacking molding device and stacking molding system - Google Patents

Abstract

The present invention relates to a stacking molding device capable of performing temperature regulation of a hot plate at low cost. The stacking molding device includes: a pair of hot plates, which are composed of an upper hot plate and a lower hot plate, wherein the upper hot plate is arranged above a workpiece conveyed along a front-rear direction and is arranged to press the workpiece with its lower surface, and the lower hot plate is arranged below the workpiece conveyed along the front-rear direction and presses the workpiece with its upper surface; a heater, which is inserted in each hot plate and extends in a direction parallel to a surface abutting against the workpiece and different from the conveying direction of the workpiece, and the end of the hot plate protrudes from the side surface in the left-right direction; and a heat insulating portion, which covers at least a part of the side surface in the left-right direction in each hot plate, and the heat insulating portion avoids interference with the heater protruding from the end of each hot plate, and covers the side surface in the left-right direction of the hot plate.

Description

Stacking molding device and stacking molding system

Technical Field

The invention relates to a stacking molding device and a stacking molding system.

Background Art

In recent years, a stacking molding system has been used in which a vacuum stacking device having a chamber capable of reducing pressure, a first flattening press device, and a second flattening press device are continuously arranged. In this stacking molding system, a stacked molded product is stacked while being moved from the vacuum stacking device to the first flattening press device and from the first flattening press device to the second flattening press device using a transfer mechanism.

Patent Document 1 discloses a lamination molding system in which a vacuum lamination device (vacuum pressure laminator) having a chamber capable of reducing pressure and a press device are continuously arranged.

In addition, Patent Document 2 discloses a stacking molding system in which a vacuum stacking unit having a chamber capable of reducing pressure, a first flat stamping unit, and a second flat stamping unit are continuously arranged. In particular, Patent Document 2 describes the intensity of pressure applied to the workpiece by the vacuum stacking unit and the time for which the pressure is applied when the stacked molded product is moved from the vacuum stacking unit to the first flattening stamping unit and from the first flattening stamping unit to the second flattening stamping unit using a transfer mechanism.

Prior art literature

Patent Literature

Patent Document 1: Japanese Patent Application Publication No. 2005-66967

Patent Document 2: Japanese Patent Application Publication No. 2020-28980

Summary of the invention

Problems to be solved by the invention

In a vacuum lamination device, the workpiece is heated by sandwiching the workpiece using hot plates respectively arranged on the upper and lower sides. Here, a plurality of heaters are provided on the hot plate along a direction extending substantially horizontally and substantially orthogonal to the conveying direction of the workpiece, and the temperature of the hot plate is adjusted by heating the heaters to a temperature suitable for performing lamination molding. However, in these hot plates, heat easily escapes from the extending direction of the heaters, and the heat escape may increase the unevenness of the in-plane temperature during lamination molding. Therefore, in the lamination molding device, it is desired to perform the temperature adjustment of the hot plate used to heat the workpiece at a low cost.

Means for solving problems

The stacking forming device disclosed in the present invention includes: a pair of hot plates, which are composed of an upper hot plate and a lower hot plate, the upper hot plate is arranged above the workpiece transported along the front-to-back direction and is arranged to press the workpiece with its lower surface, and the lower hot plate is arranged below the workpiece transported along the front-to-back direction and is arranged to press the workpiece with its upper surface; a heater, which is interspersed in each of the hot plates and extends in a direction parallel to the surface abutting the workpiece and different from the transport direction of the workpiece, with its end protruding from the side surface in the left and right directions; and a heat insulating portion, which covers at least a portion of the side surface in the left and right directions in each of the hot plates, and the heat insulating portion avoids interference with the heater protruding from the end of each of the hot plates and covers the side surfaces in the left and right directions of the hot plates.

The lower heat plate is arranged below the workpiece conveyed along the front-rear direction and is configured to press the workpiece on its upper surface; and a left-right movable heat plate is arranged on a straight line in the left-right direction relative to the upper heat plate and the lower heat plate and is arranged at a height between the upper heat plate and the lower heat plate, and moves in the left-right direction, the left-right movable heat plate is heated at a position not sandwiched between the upper heat plate and the lower heat plate, and when there is no workpiece between the upper heat plate and the lower heat plate, the left-right movable heat plate moves in the left-right direction to a position sandwiched between the upper heat plate and the lower heat plate, and becomes in contact with the lower surface of the upper heat plate and the upper surface of the lower heat plate, thereby performing heat supplementation of the upper heat plate and the lower heat plate.

In addition, the stacking molding system disclosed in the present invention includes: a stacking molding device; and at least one flattening stamping device, which is arranged in the rear section of the stacking molding device to further pressurize the workpiece formed by the stacking molding device, the stacking molding device includes: a pair of hot plates, which are composed of an upper hot plate and a lower hot plate, the upper hot plate is arranged above the workpiece transported along the front-to-back direction, and is configured to press the workpiece with the lower surface, and the lower hot plate is arranged below the workpiece transported along the front-to-back direction, and is configured to press the workpiece with the upper surface; a heater, which is inserted in each of the hot plates and extends in a direction parallel to the surface abutting the workpiece and different from the transport direction of the workpiece, and the end of the heater protrudes from the left and right side of the hot plate; an insulating part, which covers at least a part of the left and right side of each of the hot plates, and the insulating part avoids interference with the heater protruding from the end of each of the hot plates, and covers the left and right side of the hot plate.

Effects of the Invention

According to the present disclosure, the temperature adjustment of the heat plate can be performed at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram showing an example of the configuration of a vacuum lamination system according to the first embodiment.

FIG. 2 is a perspective view of the vacuum lamination device according to the first embodiment.

FIG. 3 is a side view showing a state in which the laminated molded product according to the first embodiment is held and conveyed by carrier films.

FIG. 4 is a cross-sectional view showing an example of a horizontal cross section of the upper hot plate 22 according to the first embodiment.

5 is a side view showing a state in which a heat insulating portion having a protruding portion extending downward is provided on the upper heat plate provided with a plurality of heaters according to Embodiment 1. FIG.

6 is a side view showing a state in which a heat insulating portion whose protrusion extends upward is provided on the upper hot plate provided with a plurality of heaters according to the first embodiment.

7 is a side view showing a state in which a heat insulating portion having a protruding portion extending long downward is provided on the upper heat plate of Embodiment 1. FIG.

FIG. 8 is a front view showing a state where a path is formed in the heat insulating portion according to the first embodiment.

9 is a cross-sectional view of the upper heat plate and the heat insulating portion according to Embodiment 1. FIG.

FIG. 10 is a side view showing a state where the chamber and the outer heat insulating portion of the chamber according to the first embodiment are provided.

11 is a plan view showing an example of the arrangement and movement direction of the left-right movable hot plate according to the second embodiment.

12 is a side view showing an example of the operation timing of the stacked molded product and the left-right moving hot plate according to the second embodiment.

Description of Reference Numerals

11Layer molding system

12Vacuum lamination device

131st flattening press device

14The second flattening press device

21 Upper base

22 Upper side hot plate

23 Lower base

24 lower side hot plate

25 Heater

26 Insulation

27 Move the hot plate left and right

31 Straight Line

32 protrusion

41 Chamber

42 Insulation outside the chamber

DETAILED DESCRIPTION

Hereinafter, a specific implementation mode will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to the following implementation modes. In addition, in order to make the description clear, the following description and the accompanying drawings are appropriately simplified. In addition, in order to avoid the complexity of the accompanying drawings, there are parts where the hatching is omitted.

Implementation Method 1

1 is a block diagram showing an example of the configuration of a vacuum lamination system. The lamination molding system 11 is continuously provided with a vacuum lamination device 12 having a chamber capable of reducing pressure, a first flattening press device 13, and a second flattening press device 14. In the lamination molding system 11, a lamination molding product P as 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.

It should be noted that in the vacuum lamination system, the carrier films F1 and F2 can be used to transfer the laminated molded product P. More specifically, in the vacuum lamination system, a carrier film delivery device of the transfer mechanism is provided in advance in the process preceding the vacuum lamination device 12, and a carrier film winding device of the transfer mechanism is provided in the process following the second flattening punching device 14. The film winding device can wind up the carrier film to move the carrier films F1 and F2, so the laminated molded product P can be transported while the carrier films F1 and F2 are moved. It should be noted that, here, the carrier film F1 is arranged above the laminated molded product P, and the carrier film F2 is arranged below the laminated molded product P, so that the laminated molded product P is sandwiched.

Here, the laminated molded product P is composed of a substrate with projections and depressions and a laminated film. In the vacuum lamination device 12, the first flattening press device 13, and the second flattening press device 14, when the laminated molded product P is laminated sequentially through the carrier films F1 and F2, the laminated film is prevented from partially melting and adhering to the device parts. In addition, the use of the carrier films F1 and F2, especially in the first flattening press device 13 and the second flattening press device 14, also has the advantage of providing a certain buffering effect when pressurizing the laminated molded products (primary laminated molded products and secondary laminated molded products).

FIG2 is a perspective view of the vacuum lamination device 12. It should be noted that the laminated molded product P is transported horizontally, and the direction of transporting the laminated molded product P is set as the front-to-back direction, and the horizontal direction and the direction orthogonal to the front-to-back direction are set as the left-to-right direction for description. It should be noted that in FIG2, the description of the chamber C is omitted for easy understanding of the vacuum lamination device 12.

The vacuum laminating device 12 pressurizes the laminated molded product P in the chamber C capable of reducing pressure, and the laminated molded product is a primary laminated molded product. The vacuum laminating device 12 includes an upper base 21, an upper hot plate 22 mounted on the lower surface of the upper base 21, a lower base 23, a lower hot plate 24 mounted on the lower base 23, heaters 25 respectively provided on the upper hot plate 22 and the lower hot plate 24, and a heat insulating portion 26 disposed on the left and right sides of the upper hot plate 22 and the lower hot plate 24. It should be noted that the laminated molded product P is intermittently supplied to the vacuum laminating device 12.

It should be noted that the upper hot plate 22 and the lower hot plate 24 are a pair of hot plates, and the heater 25 arranged on the upper hot plate 22 is set as heater 25a, the heater 25 arranged on the lower hot plate 24 is set as heater 25b, the insulation part 26 arranged on the upper hot plate 22 is set as insulation part 26a, and the insulation part 26 arranged on the lower hot plate 24 is set as insulation part 26b for explanation.

The upper base 21 is provided on the upper part of the vacuum laminating device 12. Here, the upper base 21 is described as a rectangular plate (fixed plate) having a predetermined thickness in the vertical direction. The upper surface of the upper hot plate 22 is installed in contact with the lower surface of the upper base 21.

The upper heat plate 22 is a plate into which a plurality of heaters 25a are inserted in a state extending in the left-right direction. Here, the upper heat plate 22 has a predetermined thickness in the upper and lower parts and is in a rectangular parallelepiped shape having sides extending in the front-back direction and sides extending in the left-right direction. It should be noted that other components may be sandwiched between the upper base 21 and the upper heat plate 22.

Furthermore, a heat insulating portion 26 a extending in the front-rear direction is disposed on the side surface of the upper hot plate 22 in the left-right direction.

The lower base 23 is provided at the lower part of the vacuum laminating device 12. The lower surface of the lower hot plate 24 is mounted on the upper surface of the lower base 23 in abutting state. It should be noted that, for example, the lower base 23 can be composed of a rectangular plate (movable plate) having a predetermined thickness in the up-down direction and a plurality of tie rods inserted in the plate. In this case, the lower surface of the lower hot plate 24 is mounted in a state of being placed on the upper surface of the lower base 23.

The lower heat plate 24 is a plate into which a plurality of heaters 25b are inserted in a state extending in the left-right direction. Here, the upper heat plate 22 has a predetermined thickness in the upper and lower parts and is in a rectangular parallelepiped shape having sides extending in the front-back direction and sides extending in the left-right direction. It should be noted that other components may be sandwiched between the lower base 23 and the lower heat plate 24.

It should be noted that, for example, when the lower base 23 is configured to have a tie rod inserted therethrough, the lower base 23 is moved upward to bring the upper base 21 and the lower base 23 closer to each other, thereby allowing the lower hot plate 24 to approach the upper hot plate 22. This action causes the lower surface of the upper hot plate 22 to press against the upper surface of the laminated molded product P, and the upper surface of the lower hot plate 24 to press against the lower surface of the laminated molded product P.

Furthermore, a heat insulating portion 26 b extending in the front-rear direction is disposed on the side surface of the lower heat plate 24 in the left-right direction.

FIG3 is a diagram showing a state where the stacked molded product P is sandwiched and transported by the carrier films F1 and F2. That is, as shown in FIG3, the stacked molded product P is transported by passing between the upper hot plate 22 and the lower hot plate 24 while being sandwiched by the carrier films F1 and F2. Therefore, the upper hot plate 22 is arranged above the stacked molded product P transported in the front-back direction, and the lower hot plate 24 is arranged below the stacked molded product P. In addition, by the movement of the upper hot plate 22 and the lower hot plate 24 approaching each other, the upper hot plate 22 abuts against the upper surface of the stacked molded product P through the carrier film F1, and the lower hot plate 24 abuts against the lower surface of the stacked molded product P through the carrier film F2.

Returning to Fig. 2, the heater 25a is inserted in the upper hot plate 22 in a state extending in the left-right direction. Here, the heater 25a is provided in a state where the end portion protrudes from the left-right side of the upper hot plate 22. The heater 25a can heat the upper hot plate 22 to a predetermined temperature by supplying heat.

Similarly, the heater 25b is a heater inserted in the lower hot plate 24 in a state extending in the left-right direction. Here, the heater 25b is provided in a state where the end portion protrudes from the left-right side of the lower hot plate 24. The heater 25b can heat the lower hot plate 24 to a predetermined temperature by supplying heat.

That is, the heaters 25a and 25b are respectively inserted in the heat plates 22 and 24 and are arranged to extend in a direction parallel to the surface abutting against the stacked molded product P and different from the conveying direction of the stacked molded product P, and the ends of the heat plates 22 and 24 protrude from the side surfaces in the left and right directions.

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

Fig. 5 is a side view showing a state where a heat insulating portion 26a is provided on the upper heat plate 22 provided with a plurality of heaters 25a. As shown in Fig. 5, the heat insulating portion 26a is formed to have a length in the vertical direction that is equal to the thickness of the upper heat plate 22, is formed to have a predetermined thickness in the left-right direction, and is formed to be long in the front-back direction to cover the side surface of the upper heat plate 22. Here, since the ends of the plurality of heaters 25a protrude from the side surface of the upper heat plate 22, the heat insulating portion 26a is formed in a comb shape so as not to interfere with the ends of the heaters 25a.

More specifically, the heat insulating portion 26 a is formed in a comb shape by forming a straight portion 31 formed long in the front-rear direction and a plurality of protrusions 32 protruding in the up-down direction from the straight portion 31 .

5 , the heat insulating portion 26a can be formed into a shape in which a straight portion 31 is provided on the upper side of the upper heat plate 22, and a plurality of protrusions 32 protrude downward from the straight portion 31. In FIG5 , the range of the straight portion 31 is indicated by a dotted line.

On the other hand, as shown in Fig. 6 , the heat insulating portion 26a can also be formed in a shape in which a straight portion 31 is provided on the lower side of the side of the upper heat plate 22, and a plurality of protrusions 32 protrude upward from the straight portion 31. It should be noted that in Fig. 6 , the range of the straight portion 31 is indicated by a dotted line.

In addition, as shown in FIG. 7 , the heat insulating portion 26a can be configured on the side of the upper heat plate 22 in a manner that protrudes downward compared to the lower surface 22a of the upper heat plate 22, and is set to a shape that is long in the vertical direction. It should be noted that in FIG. 7 , the range of the straight portion 31 is shown by a dotted line. In this way, the heat insulating portion 26a is formed to protrude downward compared to the lower surface 22a of the upper heat plate 22, thereby, when the upper heat plate 22 and the lower heat plate 24 are sandwiched in a state of respectively contacting the stacked molded product P, it is possible to suppress the escape of heat from the side of the stacked molded product P, that is, the gap between the upper heat plate 22 and the lower heat plate 24. It should be noted that in FIG. 7 , the straight portion 31 is shown in the upper part and the protruding portion 32 is shown in the lower part in the same manner as in FIG. 5 , and the straight portion 31 can also be set in the lower part and the protruding portion 32 can be set in the upper part in the same manner as in FIG. 6 .

The same is true for the heat insulating portion 26b provided on the side of the lower heat plate 24. That is, the heat insulating portion 26b is formed with a length equal to the thickness of the lower heat plate 24 in the vertical direction, a predetermined thickness in the horizontal direction, and is formed long in the front-rear direction to cover the side of the lower heat plate 24.

The heat insulating portion 26 b can be formed into a shape in which a straight portion 31 is provided on the lower side of the side surface of the lower heat plate 24 , and a plurality of protrusions 32 protrude upward from the straight portion 31 .

On the other hand, the heat insulating portion 26 b may be formed into a shape in which a straight portion 31 is provided on the upper side of the side surface of the lower heat plate 24 , and a plurality of protrusions 32 protrude downward from the straight portion 31 .

In addition, the heat insulating portion 26 b may be formed in a shape that is elongated in the vertical direction on the side surface of the lower heat plate 24 so as to protrude upward from the upper surface of the lower heat plate 24 .

It should be noted that, on the side of the upper heat plate 22, a portion of the insulation portion 26a protrudes downward compared to the lower surface of the upper heat plate 22, and on the side of the lower heat plate 24, a portion of the insulation portion 26b protrudes upward compared to the upper surface of the lower heat plate 24. Either or both of these can be performed.

In summary, it can be set to at least one of the following two states: when the straight portion 31 is arranged at the top and the protrusion 32 is arranged at the bottom of the insulation portion 26a covering the side of the upper heat plate 22, the front end of the protrusion 32 is arranged below compared with the lower surface of the upper heat plate 22; when the straight portion 31 is arranged at the bottom and the protrusion 32 is arranged at the top of the insulation portion 26 covering the side of the lower heat plate 24, the front end of the protrusion 32 is arranged above compared with the upper surface of the lower heat plate 24.

Alternatively, it can be set to at least one of the following states: when the straight portion 31 is arranged at the bottom and the protrusion 32 is arranged at the top of the insulation portion 26a covering the side of the upper heat plate 22, the lower end of the straight portion 31 is arranged below compared with the lower surface of the upper heat plate 22; when the straight portion 31 is arranged at the top and the protrusion 32 is arranged at the bottom of the insulation portion 26b covering the side of the lower heat plate 24, the upper end of the straight portion 31 is arranged above compared with the upper surface of the lower heat plate 24.

The material of the heat insulating material used in the heat insulating parts 26a and 26b is not particularly limited, and a material obtained by impregnating paper, cloth, or glass cloth with a resin, or a material obtained by bonding a mineral such as mica or a ceramic material with a resin or the like can be used.

In addition, if the heat insulating parts 26a and 26b are a method of improving the heat retention during stacking molding, the structure and material are not particularly limited. The heat insulating parts 26a and 26b may also have a hollow shape or a hollow structure. The heat insulating parts 26a and 26b may also have a structure with a decompression space. In this case, considering the cooling performance after stacking molding, it is desired that the space after decompression has a mechanism capable of regulating air pressure. The heat insulating parts 26a and 26b may also have a temperature regulating function. Here, as shown in Figure 8, a path 26c that allows a fluid of a specified temperature to pass through can be formed in advance inside the heat insulating parts 26a and 26b, and the temperature of the heat insulating parts 26a and 26b can be regulated by passing the fluid. In this case, considering the cooling performance after stacking molding, it is preferred that the temperature regulating fluid is not limited to heating, but can also be cooled. It should be noted that the method of temperature regulation is not limited to this method.

Fig. 9 is a cross-sectional view showing an example of the structure of the upper heat plate 22 and the heat insulating part 26a, and is a cross-sectional view showing a cross section 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.

In the heat insulating portion 26a covering the side of the upper heat plate 22, the metal member 34 is arranged on the outer side in the left-right direction, and the heat insulating member 33 is arranged on the inner side compared with the metal member 34. That is, the heat insulating member 33 is configured to be sandwiched between the upper heat plate 22 and the metal member 34. The heat insulating member 33 can improve the thermal insulation of the upper heat plate 22 by absorbing heat. It should be noted that, typically, the heat insulating member 33 is formed thicker than the metal member 34. Here, in the present disclosure, the heat insulating member 33 that absorbs heat means that the thermal conductivity is smaller than that of the metal member constituting the upper heat plate 22. The method for measuring the thermal conductivity is not particularly limited, and may also be, for example, a method based on ASTME1530.

The metal member 34 further improves the heat retention of the upper hot plate 22 by reflecting the heat from the upper hot plate 22 side to the heat insulating member 33 side. As a more specific example, the metal member 34 can reflect the heat reaching the metal member 34 through the heat insulating member 33 from the upper hot plate 22 toward the heat insulating member 33. The metal member 34 can be any one of iron, aluminum, and copper, or an alloy containing at least one of these metals. The heat reflection of the metal member 34 can also 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 member 34 is not particularly limited, and the surface facing the side of the heat insulating member 33 is preferably smooth, and more preferably mirror-finished. In addition, the shape of the metal member 34 is not particularly limited, and it can also be different from the shape of the heat insulating member 33. That is, the metal member 34 can also be configured to cover at least a part of the heat insulating member 33. It should be noted that the area of the heat insulating member 33 covered by the metal member 34 is preferably 30% or more of the area of the surface in the heat insulating member 33, and more preferably 50% or more.

In addition, in FIG. 9 , an example of the configuration of the heat insulating portion 26 a covering the side surface of the upper heat plate 22 is described, and the heat insulating portion 26 b covering the side surface of the lower heat plate 24 is also the same.

10 is a side view showing a state where a chamber 41 is constituted by an upper chamber 41a and a lower chamber 41b and provided with a chamber outer heat insulating portion 42 arranged outside the chamber 41 and capable of decompressing an internal space formed by the upper chamber 41a and the lower chamber 41b.

At least one of the upper chamber 41a and the lower chamber 41b can move up and down, and by approaching each other, a closed space accommodating the upper base 21, the upper hot plate 22, the lower base 23, the lower hot plate 24, the heater 25 and the insulation part 26 is formed.

The outer chamber insulation 42 is arranged to cover at least a portion of the outer side surface of the upper chamber 41a in the front-back direction. Typically, the outer chamber insulation 42 is arranged to cover the outer side surface of the upper chamber 41a in the front-back direction near the lower end portion abutting against the lower chamber 41b.

It should be noted that the chamber outer heat insulating portion 42 may be arranged so as to cover at least a portion of the outer side surface of the lower chamber 41b in the front-rear direction. In this case, as in the case where the chamber outer heat insulating portion 42 is arranged on the outer side surface of the upper chamber 41a, the chamber outer heat insulating portion 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 portion.

It should be noted that the chamber outer heat insulating portion 42 may also include a functional portion 42a for heating or cooling. This can suppress deformation of the upper chamber 41a and the lower chamber 41b and appropriately maintain the vacuum degree in the chamber 41.

Returning to FIG. 1 , the first flattening press device 13 has a pressurizing surface of a metal press plate. Typically, in the first flattening press device 13, the pressurizing surface of the metal press plate is given a driving force of a servo motor, and the laminated molded product P is pressurized. The first flattening press device 13 further pressurizes the laminated molded product P (primary laminated molded product) press-molded by the vacuum laminating device 12, which is composed of a substrate having a concavo-convex portion and a laminated film, and has a concavo-convex state remaining on the laminated film side, and press-moldes it into a flatter laminated molded product P (secondary laminated molded product).

The second flattening press device 14 is a press device having the same structure as the first flattening press device 13 and having the same pressing mechanism. It should be noted that the same structure and the same pressing mechanism include substantially the same structure and substantially the same pressing mechanism. That is, the second flattening press device 14 has a pressing surface of a metal press plate. Typically, the second flattening press device 14 applies a driving force of a servo motor to the pressing surface of the metal press plate, and the laminated molded product P is pressurized.

By configuring in this way, in the vacuum laminating device 12, it is possible to suppress heat loss that escapes to the side direction in the upper hot plate 22 and the lower hot plate 24. Therefore, the amount of heat when reheating the upper hot plate 22 and the lower hot plate 24 can be reduced, and the temperature of the hot plate can be adjusted at low cost.

Implementation Method 2

A configuration further including a right-and-left moving heat plate 27 for supplying heat to the side heat plate 22 and the lower heat plate 24 will be described.

As shown in Figure 11, the left-right movable hot plate 27 is a hot plate that is arranged on a straight line in the left-right direction relative to the upper hot plate 22 and the lower hot plate 24 and moves in the left-right direction. In addition, the position in the up-down direction where the left-right movable hot plate 27 is provided is a position between the upper hot plate 22 and the lower hot plate 24.

The horizontally movable hot plate 27 is a plate having the same length in the front-rear direction and the horizontal direction as the upper hot plate 22 and the lower hot plate 24. Therefore, the horizontally movable hot plate 27 can be switched between a state where it is sandwiched between the upper hot plate 22 and the lower hot plate 24 and a state where it is separated from the upper hot plate 22 and the lower hot plate 24 by sliding in the horizontal direction.

Here, the stacked molded product P is intermittently and continuously supplied to the vacuum laminating device 12. FIG12(a) shows a state where the stacked molded product P is arranged between the upper hot plate 22 and the lower hot plate 24. When the stacked molded product P is arranged between the upper hot plate 22 and the lower hot plate 24, the left-right moving hot plate 27 is slid in the left-right direction as shown in FIG11, so that the stacked molded product P is arranged at a position away from between the upper hot plate 22 and the lower hot plate 24.

At this time, the horizontally movable hot plate 27 receives heat from a heating mechanism (not shown) to a predetermined temperature. The heating mechanism can heat the horizontally movable hot plate 27 so that the temperature of the lower portion is higher than the temperature of the upper portion.

Then, as shown in FIG. 12( b ), the stacked molded product P is conveyed and becomes a state where the stacked 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 movable hot plate 27 slides in the left-right direction. Thus, as shown in FIG. 12( c ), the left-right movable hot plate 27 is arranged at a position sandwiched between the upper hot plate 22 and the lower hot plate 24.

At this time, the lower surface of the upper hot plate 22 is in contact with the upper surface of the horizontally movable hot plate 27, and the upper surface of the lower hot plate 24 is in contact with the lower surface of the horizontally movable hot plate 27. Since the horizontally movable hot plate 27 is in a fully heated state, heat is transferred from the horizontally movable 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 horizontally movable hot plate 27.

It should be noted that, in the heating of the left-right movable hot plate 27, there is a case where the heating effect on the upper hot plate 22 is large and the heating effect on the lower hot plate 24 is small. Therefore, when the left-right movable hot plate 27 is heated, the temperature of the lower part of the left-right movable hot plate 27 is preheated to be higher than the temperature of the upper part, so that when the left-right movable 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.

It should be noted that when heating the left-right movable hot plate 27, the temperature difference is set by position, not limited to the temperature difference between the lower and upper parts of the left-right movable hot plate 27. For example, the temperature difference can be set between the peripheral part and the central part of the left-right movable hot plate 27 in the front-back left-right direction.

Thus, in the vacuum laminating device 12, heat adjustment in the upper hot plate 22 and the lower hot plate 24 is performed not only by using the heater 25 but also by using the left-right movable hot plate 27, so that the upper hot plate 22 and the lower hot plate 24 can be efficiently heated. That is, in a state where the laminated molded product P is not sandwiched between the upper hot plate 22 and the lower hot plate 24, since the heating time of the upper hot plate 22 and the lower hot plate 24 can be shortened, the vacuum laminating device 12 can be efficiently operated, and the cost can be reduced.

It should be noted that the present invention is not limited to the above-mentioned embodiment and can be appropriately changed within the scope of the main purpose. For example, when the front section of the vacuum lamination device 12 does not have a chamber and is provided with a preheating device having an upper hot plate and a lower hot plate for preheating the laminated molded product P, the same structure can also be used. That is, the upper hot plate and the lower hot plate of the preheating device can be provided with comb-shaped insulation parts on the side surfaces in the left and right directions, respectively, and a left and right movable hot plate can be provided.

In addition, the chamber outer insulation part 42 described in Embodiment 1 can be set as a structure not provided in the vacuum lamination device 12. On the contrary, in the vacuum lamination device 12 provided with the chamber outer insulation part 42 described in Embodiment 1, it is also possible to arbitrarily select whether to provide the insulation parts 26a and 26b on the upper heat plate 22 and the lower heat plate 24.

The left-right movable hot plate 27 described in Embodiment 2 may be installed in the vacuum laminating device 12 in advance, and it is optional to choose whether to install the heat insulating parts 26a and 26b on the upper hot plate 22 and the lower hot plate 24 of the vacuum laminating device 12. That is, the left-right movable hot plate 27 may be installed in the vacuum laminating device 12, but the heat insulating parts 26a and 26b may not be installed on the upper hot plate 22 and the lower hot plate 24.

Claims (12)

1. A laminate molding apparatus, comprising:

a pair of hot plates, each of which is composed of an upper hot plate disposed above a workpiece conveyed in the front-rear direction and configured to press the workpiece on a lower surface, and a lower hot plate disposed below the workpiece conveyed in the front-rear direction and configured to press the workpiece on an upper surface;

A heater inserted in each of the hot plates and extending in a direction parallel to a surface on which the workpiece is pressed and different from a conveying direction of the workpiece, and an end portion of the heater protruding from a side surface of the hot plate in a left-right direction; and

A heat insulating part which covers at least a part of the lateral surface of each of the hot plates in the left-right direction,

The heat insulating part prevents interference with a heater protruding from an end of each of the heat plates, and covers a lateral surface of the heat plate in a lateral direction.

2. The laminate molding apparatus as claimed in claim 1, wherein,

The heat insulation part is comb-shaped, and comprises:

A linear portion extending in the front-rear direction; and

And a plurality of protruding portions protruding from the straight portion in the up-down direction.

3. The laminate molding apparatus as claimed in claim 2, wherein,

The lamination forming device is in at least one of the following two states:

the heat insulating part covering the side surface of the upper hot plate is arranged below the front end of the protruding part compared with the lower surface of the upper hot plate when the straight part is arranged above and the protruding part is arranged below; and

The heat insulating portion covering the side surface of the lower heat plate is arranged such that the tip of the protruding portion is disposed above the upper surface of the lower heat plate when the straight portion is disposed below and the protruding portion is disposed above.

4. The laminate molding apparatus as claimed in claim 2, wherein,

The lamination forming device is in at least one of the following two states:

The heat insulating part covering the side surface of the upper hot plate is arranged below the lower end of the straight part compared with the lower surface of the upper hot plate when the straight part is arranged below and the protruding part is arranged above; and

The heat insulating portion covering the side surface of the lower heat plate is arranged such that an upper end of the linear portion is disposed above the upper surface of the lower heat plate when the linear portion is disposed above and the protruding portion is disposed below.

5. The laminate molding apparatus as claimed in claim 1, wherein,

The heat insulation part is a metal piece with adjustable temperature of the heat insulation part.

6. The stack molding apparatus according to claim 5, wherein,

The heat insulating portion has a path through which the coolant passes.

7. The laminate molding apparatus as claimed in claim 1, wherein,

The heat insulating part includes:

A heat insulating member that absorbs heat; and

A metal piece that reflects heat and is provided with a heat-reflecting surface,

The heat insulating member is disposed between the hot plate and the metal member.

8. The stack molding apparatus according to claim 1, further comprising:

an upper chamber;

A lower chamber; and

A heat-insulating part outside the cavity,

The upper chamber and the lower chamber can be moved close to each other to form a closed space containing the upper hot plate, the lower hot plate, the heater and the heat insulating part,

The chamber external heat insulating portion covers at least a part of an outer side surface of the upper chamber on the front-rear direction side or at least a part of an outer side surface of the lower chamber on the front-rear direction side.

9. The laminate molding apparatus as claimed in claim 1, wherein,

The device further comprises a left-right moving hot plate which is arranged at a position on a straight line in the left-right direction relative to the upper hot plate and the lower hot plate, is arranged at a height between the upper hot plate and the lower hot plate, and acts in the left-right direction,

The left and right moving hot plate is heated at a position not sandwiched between the upper hot plate and the lower hot plate,

When the workpiece is not located between the upper heat plate and the lower heat plate, the left/right moving heat plate moves in the left/right direction to a position sandwiched between the upper heat plate and the lower heat plate, and is brought into contact with the lower surface of the upper heat plate and the upper surface of the lower heat plate, thereby performing heat replenishment of the upper heat plate and the lower heat plate.

10. The stack molding apparatus according to claim 9, wherein,

When the left-right moving hot plate is heated at a position where the hot plate is not sandwiched between the upper hot plate and the lower hot plate, the temperature of the upper surface side in contact with the upper hot plate and the temperature of the lower surface side in contact with the lower hot plate can be adjusted, respectively, so that the temperature of the lower surface side is higher than the temperature of the upper surface side.

11. A laminate molding apparatus, comprising:

A pair of hot plates, each of which is composed of an upper hot plate disposed above a workpiece conveyed in the front-rear direction and configured to press the workpiece on a lower surface, and a lower hot plate disposed below the workpiece conveyed in the front-rear direction and configured to press the workpiece on an upper surface; and

A left-right moving hot plate which is arranged at a position on a straight line in a left-right direction relative to the upper hot plate and the lower hot plate, is arranged at a height between the upper hot plate and the lower hot plate, and operates in the left-right direction,

The left and right moving hot plate is heated at a position not sandwiched between the upper hot plate and the lower hot plate,

When the workpiece is not located between the upper hot plate and the lower hot plate, the left-right moving hot plate moves in the left-right direction to a position sandwiched between the upper hot plate and the lower hot plate, and is brought into contact with the lower surface of the upper hot plate and the upper surface of the lower hot plate, thereby performing heat replenishment of the upper hot plate and the lower hot plate.

12. A stack molding system, comprising:

A lamination forming device; and

At least one flattening press device provided at a rear stage of the lamination forming device, for further pressing the workpiece molded by the lamination forming device,

The lamination forming device comprises:

a pair of hot plates, each of which is composed of an upper hot plate disposed above a workpiece conveyed in the front-rear direction and configured to press the workpiece on a lower surface, and a lower hot plate disposed below the workpiece conveyed in the front-rear direction and configured to press the workpiece on an upper surface;

A heater inserted in each of the hot plates and extending in a direction parallel to a surface in contact with the workpiece and different from a conveying direction of the workpiece, and an end of the heater protruding from a lateral surface of the hot plate in a lateral direction; and

A heat insulating part which covers at least a part of the lateral surface of each of the hot plates in the left-right direction,

The heat insulating part prevents interference with a heater protruding from an end of each of the heat plates, and covers a lateral surface of the heat plate in a lateral direction.