JP2013099759A - Press device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press device which can suppress the form deviation of a press-molded product manufactured by a hot press molding method.SOLUTION: The press device in which a work piece is pressed between an upper press board and a lower press board arranged in a vertical direction, includes an upper support member which supports the upper press board through a joint, being joined to the upper surface opposite to the press surface of the upper press board, and a lower support member which supports the lower press board through the joint, being joined to the lower surface opposite to the press surface of the lower press board, wherein it is configured so that the projection in a vertical direction of a joint support zone within the upper surface in which the upper support member joins with the upper press board, and the joint support zone within the lower surface in which the lower support member joins with the lower press board approximately overlap with each other.

Description

  The present invention relates to a press apparatus for hot press molding a plate-like product such as a printed wiring board with high accuracy.

  In order to form a plate-like product such as a printed wiring board, a press apparatus that hot-presses a workpiece placed between press machines is known. A specific configuration example of this type of pressing apparatus is described in Patent Document 1. The press apparatus described in Patent Literature 1 pushes out a piston of a cylinder joined to the lower surface of the movable heat platen and raises the movable heat plate toward the fixed heat platen. As a result, the hot platen between the movable hot platen and the fixed hot platen is pushed up and sandwiched between the fixed hot platen so that the workpiece placed between the hot platen is hot press molded. Is done.

JP 2006-122911 A

  In Patent Document 1, the movable heating plate is supported by the frame so as to be movable up and down via a piston of a cylinder joined to the center of the lower surface (the back surface of the pressing surface of the movable heating plate). It is suspended and supported by the frame via a plurality of suspension members joined to a plurality of locations on the back surface of the press surface of the fixed hot platen. At the time of hot press molding, a concentrated load is applied to each hot platen by pushing up the piston with respect to the central region, and at the same time, a concentrated load is applied to the region corresponding to the joint point with each suspension member. That is, during hot press molding, each hot platen is subjected to a concentrated load in the upside down direction on the deviated region (the central region and the joint point corresponding region), so that a large shear stress is generated inside each hot platen. Each hot platen is distorted in a complicated manner so as to wave during hot press molding due to the generation of shear stress. However, since the distortion of this type of hot platen is very slight, it has never been regarded as a problem until now, and it was not even recognized in the first place.

  However, with the recent miniaturization of information processing terminals and the like, when further miniaturization is required for the wiring pattern of a printed wiring board mounted on the information processing terminal or the like, the above-described distortion of the hot platen is caused. It turned out to be a problem during press molding. Specifically, a slight distortion occurs in each hot platen during hot press molding, resulting in an unbalanced load distribution transmitted from each hot plate to the upper and lower surfaces of the workpiece. As the load distribution on the upper and lower surfaces of the workpiece becomes unbalanced, the resin material contained in the workpiece is pressed into a distorted shape, resulting in disconnection of the fine wiring pattern, short circuit between the fine wiring patterns, etc. Therefore, miniaturization of the wiring pattern cannot be achieved.

  This invention is made | formed in view of said situation, The place made into the objective is providing the press apparatus which can suppress the shape deviation of the press molded product manufactured by the hot press molding method.

  A press device according to an embodiment of the present invention is a device that presses a workpiece between an upper press plate and a lower press plate arranged in the vertical direction, and includes an upper support member that supports the upper press plate, A lower support member for supporting the press panel is provided. The upper support member is bonded to the upper surface opposite to the press surface of the upper press plate, and supports the upper press plate through this bonding. The lower support member is bonded to the lower surface opposite to the press surface of the lower press plate, and supports the lower press plate through this bonding. The projections in the vertical direction of the joint support area in the upper surface where the upper support member joins the upper press board and the joint support area in the lower face where the lower support member joins the lower press board substantially overlap.

  In this way, the upper and lower support members support the press plates so that the projections of the joint support areas are substantially overlapped, so that the press members are substantially equal in the upside down direction from the support members during press molding. Since a load of distribution can be applied, shear stress is not substantially generated inside each press machine, and distortion of each press machine is suppressed. For this reason, there is no imbalance in the load distribution applied to the upper and lower surfaces of the workpiece, and molding defects of the resin material contained in the workpiece can be suppressed. By suppressing the molding defects of the resin material contained in the workpiece, the occurrence of disconnection of the fine wiring pattern, short circuit between the fine wiring patterns, and the like can be suppressed, so that the miniaturization of the wiring pattern can be achieved.

  The upper support member and the lower support member have, for example, a cylindrical shape with substantially the same diameter and are substantially coaxial in order to apply a load having a substantially equal distribution in the upside down direction from each support member to each press panel. One end surface of the upper support member is joined to the upper surface, and one end surface of the lower support member is joined to the lower surface.

  A press device according to another embodiment of the present invention is a press device that presses a workpiece between an upper press plate and a lower press plate arranged in the vertical direction, and includes a plurality of upper support members and a plurality of lower members. A support member is provided. Each of the plurality of upper support members is bonded to the upper surface opposite to the press surface of the upper press plate, and supports the upper press plate through this bonding. Each of the plurality of lower support members is bonded to a lower surface opposite to the press surface of the lower press plate, and supports the lower press plate through this bonding. Above and below the plurality of joint support areas in the upper surface where each of the plurality of upper support members joins the upper press board, and above the plurality of joint support areas in the lower face where each of the plurality of lower support members joins the lower press board Direction projections substantially overlap.

  In a press device according to another embodiment, when a work piece is placed and pressed at each position corresponding to the bonding support area on the press surface of the lower press machine, the press member from each support member to each press machine at each position. On the other hand, it is possible to apply loads with approximately equal distribution in the upside down direction, and distortion of each press machine is suppressed, so there is no imbalance in load distribution on the upper and lower surfaces of the work piece and it is included in the work piece Molding defects of the resin material can be suppressed. Therefore, a press apparatus according to another embodiment can simultaneously form a plurality of press-formed products having a fine wiring pattern.

  A plurality of upper support members are provided at each position corresponding to the bonding support area on the press surface of the lower press plate so that a load having an approximately equal distribution in the upside down direction is applied from each support member to each press plate. And the plurality of lower support members, for example, have the same number of cylindrical shapes having substantially the same diameter, and each of the plurality of upper support members is disposed substantially coaxially with one of the plurality of lower support members, One end surfaces of the plurality of upper support members are joined to the upper surface, and one end surfaces of the plurality of lower support members are joined to the lower surface.

  For example, a plurality of upper support members are disposed in the upper surface of the upper press plate, and a plurality of lower support members are disposed in the lower surface of the lower press plate, for example. The plurality of upper support members are arranged in two pairs, for example, in a matrix form in the upper surface of the upper press board, and the plurality of lower support members are arranged in two pairs, for example, in a matrix form in the lower surface of the lower press board. Has been.

  ADVANTAGE OF THE INVENTION According to this invention, the press apparatus which can suppress the shape deviation of the press molded product manufactured by the hot press molding method is provided.

It is a front view of the press apparatus of embodiment of this invention. It is a figure which shows the state of the press apparatus at the time of hot press-molding a workpiece in embodiment of this invention. It is a schematic diagram which shows the positional relationship of the ram in the embodiment of this invention, a connection support pillar, and a to-be-processed object. It is a front view of the press apparatus of the modification 1. It is a figure which shows the state of the press apparatus at the time of hot press-molding a workpiece in the modification 1. It is a schematic diagram which shows the positional relationship of the ram in a modification 1, a connection support pillar, and a to-be-processed object. It is a front view of the press apparatus of the modification 2. It is a figure which shows the state of the press apparatus at the time of hot-press-molding a workpiece in the modification 2. 10 is a schematic diagram showing a positional relationship among a ram, a connection support column, and a workpiece P in Modification 2. FIG.

  Hereinafter, a press device according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a front view of a press device 1 of the present embodiment. As shown in FIG. 1, the press device 1 is a vertical hot press device in which a pair of hot press hot plate bodies are arranged in the vertical direction, and includes a press frame 2, a lower hot plate body 100, and an upper portion. A hot platen body 200 and a ram cylinder unit 300 are provided. The press frame 2 is rigidly supported by a base B that is an installation part of the press device 1. FIG. 2 is a view of the press device 1 in the direction of arrow A in FIG. 1 and shows the state of the press device 1 when hot-pressing a workpiece P such as a printed wiring board. In FIG. 2, for convenience of explanation, the configuration excluding the press frame 2 is shown.

  The ram cylinder unit 300 is supported on the base side of the press frame 2. The ram cylinder unit 300 includes a cylinder 310 having a substantially cylindrical shape with an upper end surface opened and a lower end surface closed. The cylinder 310 accommodates a substantially cylindrical ram 320 (diameter: φD) that can move up and down while sliding on the inner wall surface of the cylinder 310. A hydraulic pump is connected to the controller of the press apparatus 1 (none is shown). The controller moves the ram 320 up and down relative to the cylinder 310 by driving the hydraulic pump to pressurize or depressurize the hydraulic oil in the cylinder 310.

  The lower heating platen 100 is formed by laminating a table surface plate 110, a heat insulating plate 120, and a lower heating plate 130 in order from below, and fixing them together. In the present embodiment, the upper surface of the lower hot plate 130 is a mounting surface for the workpiece P, and is also a pressing surface for directly pressing the workpiece P. The workpiece P is transported and placed on the upper surface of the lower hot plate 130 by a transport device such as a loader. The lower heating platen 100 is joined to the tip surface of the ram 320 at the center of the lower surface of the table surface plate 110 and is fixed to the ram 320. The lower heating platen 100 moves up and down together with the ram 320 in accordance with the hydraulic control in the cylinder 310 by the controller. That is, the lower heating platen 100 is supported by the press frame 2 via the ram cylinder part 300 so as to be movable up and down.

  The upper heating platen 200 is formed by laminating a crown surface plate 210, a heat insulating plate 220, and an upper heating plate 230 in order from the top and fixing them together. In the present embodiment, the lower surface of the upper hot plate 230 serves as a pressing surface for directly pressing the workpiece P. The upper heating platen 200 is supported by being suspended from the press frame 2 via a connection support member 400. Details of the connection support member 400 will be described later.

  Each heating plate of the lower heating plate 130 and the upper heating plate 230 is provided with well-known heating means (for example, an electric heater) (not shown). The press surface of each hot plate is raised and maintained up to the molding temperature of the resin material constituting the workpiece P (for example, the thermosetting temperature in the case of a thermosetting resin) by the operation of the temperature adjustment unit. With the press surface of each hot plate maintained at a predetermined molding temperature, the hydraulic pump is driven to drive the lower hot plate 130 upward, and the workpiece P placed on the lower hot plate 130 is heated to the lower heat. The workpiece P is hot press-molded by being sandwiched between the plate 130 and the upper hot plate 230 (see FIG. 2).

  As shown in FIG. 1 or 2, the lower heating platen 100 is supported by the ram 320 at the center of the lower surface of the table surface plate 110. Therefore, during hot press molding, a concentrated load is applied to the center region of the lower heating platen 100 due to the ram 320 being pushed up. Thus, since concentrated load is applied to the lower heating platen 100 during hot press molding, there is a concern that the lower heating platen 100 is distorted and the shape of the resultant product (press-formed product) is not stable. The However, the press device 1 according to the present embodiment includes the connection support member 400 to suppress the occurrence of such a problem.

  Specifically, the connection support member 400 includes a base 410 and a connection support column 420 attached to the lower surface of the base 410. The base 410 is fixed to the ceiling side of the press frame 2. One end surface (lower surface) of the connection support column 420 is joined to the center of the upper surface of the crown surface plate 210. That is, the connection support member 400 suspends and supports the upper heating platen 200 with respect to the press frame 2.

  FIG. 3 is a schematic diagram showing the positional relationship between the ram 320, the connection support column 420, and the workpiece P. As shown in FIG. 3, the connection support column 420 has a columnar shape (diameter: φD) substantially the same diameter as the ram 320 and is arranged coaxially with the ram 320. In the joint support region with the ram 320 in the lower surface of the table surface plate 110 and the joint support region with the connection support column 420 in the upper surface of the crown surface plate 210, the projections in the vertical direction substantially overlap each other.

  At the time of hot press molding, the concentrated load from the lower heating platen 100 is received by the connecting support pillar 420 via the upper heating platen 200. Therefore, a reaction force (concentrated load) is applied to the lower heating platen 100 around the region corresponding to the connection support column 420. That is, at the time of hot press molding, the lower heating platen 100 has a load distribution (concatenation) that is substantially the same as the load distribution according to the push-up of the ram 320 (the distribution having a concentrated load in the region corresponding to the joint support area with the ram 320). A distribution having a concentrated load in a region corresponding to the joint support region with the support column 420) is applied from the upper heating platen 200 side. Thus, since the load of the substantially equal distribution is applied to the lower heating platen 100 from the upside down direction, substantially no shear stress is generated inside the lower heating platen 100. Since only compressive stress is generated in the vicinity of the concentrated load point in the lower heating platen 100, no substantial distortion occurs in the lower heating platen 100. Similarly, since the load with a substantially equal distribution is applied from the upside down direction, the upper heating platen 200 is not substantially distorted.

  As described above, since distortion of each hot platen during hot press molding is suppressed, there is no imbalance in load distribution applied to the upper and lower surfaces of the workpiece P, and molding failure of the resin material contained in the workpiece P is eliminated. Is suppressed. By suppressing molding defects of the resin material contained in the workpiece P, occurrence of disconnection of the fine wiring pattern, short circuit between the fine wiring patterns, and the like can be suppressed, so that the wiring pattern can be miniaturized.

  In order to achieve further miniaturization of the wiring pattern, for example, the ram 320 and the connection support column 420 not only have the same outer shape, but also the selection of materials, the setting of dimensions, etc. in order to equalize or approximate each other's rigidity. You may go. Further, in order to make the rigidity of the entire lower heating platen 100 and the rigidity of the entire upper heating platen 200 equal or approximate, material selection, dimension setting, shape design, and the like may be performed. Further, the entire structure including the material, plate thickness, dimensions, and the like on the base side of the press frame 2 that supports the ram cylinder unit 300 and the ceiling side of the press frame 2 that supports the connection support member 400 may be designed in common. . By performing the design exemplified here, the load distribution in the upside down direction applied to each hot platen becomes closer, so that the distortion of each hot platen is further suppressed, and as a result, the wiring pattern is further increased. Miniaturization is achieved.

  In this embodiment, four rod-like frame parts 511 to 514 (same parts) are attached to the upper end opening edge of the cylinder 310 of the ram cylinder part 300. Between the frame portions 511 and 512, 512 and 513, 513 and 514, 514 and 511, a reinforcing plate 520 is attached to connect and reinforce each other. The main body (cylindrical portion) of the cylinder 310 is accommodated in a rectangular parallelepiped space that is surrounded by four reinforcing plates 520 and that is opened up and down. Each of the frame parts 511 to 514 extends downward along the outer peripheral surface of the cylinder 310 and is connected to the base side of the press frame 2 to support the ram cylinder part 300. On the other hand, on the connection support member 400 side, the same frame portions 511 to 514 as the above are erected on the upper surface of the base 410. Similarly, a reinforcing plate 520 is attached between the frame portions. The other ends of the frame portions 511 to 514 are connected to the ceiling side of the press frame 2 to support the connection support member 400 in a suspended manner. That is, in the present embodiment, the ram cylinder part 300 and the connection support member 400 are both supported by the same part on the press frame 2 at four points. In this way, by sharing the support structure of the ram cylinder unit 300 and the connection support member 400, the load distribution in the upside down direction applied to each heat platen becomes even closer. Therefore, distortion of each hot platen is further suppressed, and as a result, further miniaturization of the wiring pattern is achieved.

  The above is the description of the exemplary embodiments of the present invention. The embodiments of the present invention are not limited to those described above, and can be arbitrarily changed within the scope of the technical idea expressed by the description of the scope of claims.

  FIG. 4 shows a front view of a press apparatus 1z according to the first modification of the present embodiment. FIG. 5 is a view of the pressing device 1z according to the first modification in the direction of arrow A in FIG. 4, and shows the state of the pressing device 1z according to the first modification when hot pressing the workpiece P. . The pressing device 1z according to the first modification and the pressing device 1y according to the second modification described later have the same basic configuration as the pressing device 1 according to the above-described embodiment. Therefore, in the following description of the modified examples, the same or similar components as those in the press device 1 of the above-described embodiment are denoted by the same or similar reference numerals, and the description thereof is simplified or omitted. Further, in the drawings, among the same configurations as those of the press device 1 of the above-described embodiment, reference numerals are omitted for those that are not necessary for explanation of the modification.

  As shown in FIG. 4 or FIG. 5, the pressing device 1z of the first modification includes a ram cylinder part 300a and a connection support member 400a. As shown in FIG. 5, the pressing device 1z includes two ram cylinder portions 300a and two connection support members 400a. The ram cylinder part 300a includes a cylinder 310a and a ram 320a (diameter: φDa). The connection support member 400a includes a base 410a and a connection support column 420a (diameter: φDa). The ram cylinder part 300a and the connection support member 400a of the first modification are different from the ram cylinder part 300 and the connection support member 400 of the above-described embodiment only in the dimensions, and are otherwise substantially the same.

  FIG. 6 is a schematic diagram illustrating a positional relationship among the ram 320a, the connection support column 420a, and the workpiece P according to the first modification. As shown in FIG. 6, each of the two connecting support columns 420a has a cylindrical shape (diameter: φDa) having the same diameter as that of the ram 320a, and is arranged coaxially with the corresponding ram 320a. In the joint support area between the two rams 320a in the lower surface of the table surface plate 110 and the joint support area between the two connection support columns 420a in the upper surface of the crown surface plate 210, the projections in the vertical direction substantially overlap each other. In the first modification, two workpieces P are provided in each of the two regions on the lower hot plate 130 centering on the axial position of the ram 320a and the connection support column 420a where the projections of the joint support regions substantially overlap. Placed side by side. In other words, in the pressing device 1z of the first modification, for each placement position of the plurality of workpieces P, a corresponding pair of rams 320a and connecting support columns 420a are arranged.

  In the first modification, a load having a substantially equal distribution is applied to each hot platen from the upside down direction at each position where the workpiece P is to be placed, so that distortion of each hot platen is suppressed. The imbalance of the load distribution applied to the upper and lower surfaces of the workpiece P is eliminated, and the molding failure of the resin material contained in the workpiece P is suppressed. Therefore, a plurality (two) of press-formed products having a fine wiring pattern can be simultaneously formed.

  FIG. 7 shows a front view of a press device 1y of the second modification of the present embodiment. FIG. 8 is a view of the pressing device 1y according to the second modification in the direction of the arrow A in FIG. 7, and shows a state of the pressing device 1y according to the second modification when the workpiece P is hot press-molded. .

  As shown in FIG. 7 or FIG. 8, the pressing device 1y of the second modification includes a ram cylinder part 300b and a connection support member 400b. The ram cylinder part 300b includes a cylinder 310b and a ram 320b (diameter: φDb). The connection support member 400b includes a base 410b and a connection support column 420b (diameter: φDb). The ram cylinder part 300b and the connection support member 400b of Modification 2 are the same except for the dimensions of the ram cylinder part 300 and the connection support member 400 of the above-described embodiment.

  FIG. 9 is a schematic diagram illustrating a positional relationship among the ram 320b, the connection support column 420b, and the workpiece P according to the second modification. As shown in FIG. 9, four (2 rows × 2 columns) rams 320b (ram cylinder part 300b) and connection support columns 420b (connection support members 400b) are provided. Each of the four connection support columns 420b has a cylindrical shape (diameter: φDb) substantially the same diameter as the ram 320b, and is arranged coaxially with the corresponding ram 320b. In the joint support area with the four rams 320b in the lower surface of the table surface plate 110 and the joint support area with the four connection support columns 420b in the upper surface of the crown surface plate 210, the projections in the vertical direction substantially overlap each other. In the second modification, four workpieces P are provided in each of the four regions on the lower hot plate 130 centering on the axial position of the ram 320b and the connection support column 420b where the projections of the joint support regions substantially overlap. Placed side by side. In other words, as in the first modification, the pressing device 1y according to the second modification has a corresponding pair of rams 320b and connection support columns 420b arranged for each placement position of the plurality of workpieces P.

  Also in the modified example 2, as in the modified example 1, at each position where the workpiece P is to be placed, a substantially equal load is applied to each hot platen from the upside down direction. Since distortion of the body is suppressed, there is no imbalance in load distribution applied to the upper and lower surfaces of the workpiece P, and molding defects of the resin material included in the workpiece P are suppressed. Therefore, a plurality (four) of press-formed products having fine wiring patterns can be formed simultaneously.

1, 1z, 1y Press device 2 Press frame 100 Lower hot platen 110 Table surface plate 120 Thermal insulation plate 130 Lower thermal plate 200 Upper thermal platen 210 Crown surface plate 220 Thermal insulation plate 230 Upper thermal plate 300 Ram cylinder unit 310 Cylinder 320 Ram 400 connection support member 410 base 420 connection support columns 511 to 514 frame portion 520 reinforcement plate

Claims (6)

In a press device for pressing a workpiece between an upper press machine and a lower press machine arranged in the vertical direction,
An upper support member that is bonded to the upper surface opposite to the press surface of the upper press plate and supports the upper press plate through the bonding;
A lower support member that is bonded to a lower surface opposite to the press surface of the lower press plate, and supports the lower press plate through the bonding;
With
Projection in the vertical direction of the joint support area in the upper surface where the upper support member joins the upper press board and the joint support area in the lower face where the lower support member joins the lower press board, A press device characterized by substantially overlapping.   The upper support member and the lower support member have a columnar shape with substantially the same diameter and are arranged substantially coaxially. One end surface of the upper support member is joined to the upper surface, and the lower support member The press apparatus according to claim 1, wherein one end face is joined to the lower face. In a press device for pressing a workpiece between an upper press machine and a lower press machine arranged in the vertical direction,
A plurality of upper support members that are bonded to the upper surface opposite to the press surface of the upper press plate and support the upper press plate through the bonding;
A plurality of lower support members that are bonded to the lower surface opposite to the press surface of the lower press plate and support the lower press plate through the bonding;
With
A plurality of joint support areas in the upper surface where each of the plurality of upper support members is joined to the upper press disk, and a plurality of parts in the lower surface where each of the plurality of lower support members is joined to the lower press board. A press apparatus characterized in that projections in the vertical direction of the bonding support area substantially overlap.   The plurality of upper support members and the plurality of lower support members have the same number of cylinders having substantially the same diameter, and each of the plurality of upper support members is substantially the same as one of the plurality of lower support members. The one end surface of each of the plurality of upper support members is joined to the upper surface, and one end surface of each of the plurality of lower support members is joined to the lower surface. The press device according to claim 3. The plurality of upper support members are arranged in a pair in the upper surface,
5. The press device according to claim 3, wherein a pair of the plurality of lower support members are arranged in the lower surface. The plurality of upper support members are arranged in two pairs in a matrix within the upper surface,
5. The pressing device according to claim 3, wherein the plurality of lower support members are arranged in two pairs in a matrix within the lower surface.

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