JP2008012754A - Hot press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot press which is simple in composition and can improve the parallelism without hindering the movement of a movable platen. <P>SOLUTION: The hot press comprises a fixed platen 1 and the movable platen 2 which are arranged oppositely, a heating means which heats a material R, a pressure tightening means 3 which pressurizes the material R between the fixed platen 1 and the movable platen 2, a direct drive means 4 which moves straightly in the perpendicular direction to the opposed surfaces of the fixed platen 1 and the movable platen 2 and guides the movable platen 2 to approach/be separated from the fixed platen 1, and a combination means 5 which combines the direct drive means 4 and the movable platen 2. The combination means 5 includes a shaft 50 which is fixed to either one of the direct drive means 4 and the movable platen 2 to extend perpendicularly to the movement direction of the direct drive means 4 and a bush 51 which is installed in the other of the direct drive means 4 and the movable platen 2 and inserted slidably into the shaft 50 and is arranged at a position on a diagonal line D corresponding to each angle part of the movable platen 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hot press, and more particularly to a hot press that heats and pressurizes a material between a fixed platen and a movable platen.

  For example, in the manufacture of a circuit board, as a material to be laminated and a laminated material, a substrate having a patterned conductor layer laminated to form a predetermined circuit on the surface of an insulating layer or having a patterned conductor layer A film-like resin layer is laminated on the substrate. Among such wiring boards, there is a so-called build-up board in which a plurality of insulating layers and patterned conductor layers are sequentially stacked. The patterned conductor layer forms irregularities on the surface of the insulating layer. However, it is desirable that a laminated product or a laminated product in a manufacturing process of a product sequentially laminated such as a build-up substrate has a smooth surface and both surfaces are parallel.

  Thus, in order to laminate | stack a to-be-laminated material and a laminated material, a hot press is used. The hot press heats and pressurizes (laminates) the material to be laminated and the laminated material. In general, the movable platen is arranged so as to face the fixed platen, and the movable platen is fixed to the fixed platen. Guiding means for guiding the object to be moved closer and far away, heating means for heating the material to be laminated and the laminated material, and pressing means for moving the movable plate toward and away from the fixed platen are provided. In addition, it is generally known that a vacuum chamber for stacking in a vacuum atmosphere is provided so that bubbles that cause voids do not remain between the stacked material and the stacked material.

  In addition, especially when a film-like resin layer is further laminated as a laminated material on the surface of an insulating layer in which a conductor layer patterned as a laminated material forms unevenness, such as a build-up substrate, the laminated material It is also known to use a flattening press that forms a surface of the laminate after laminating the laminate and the laminate (for example, Patent Document 1). In Patent Document 1, using a vacuum laminating apparatus having a vacuum chamber in which an upper plate provided with a flexible sheet and a lower plate provided with a flexible sheet are installed, between the upper and lower plates in the chamber, After pressing the laminated body consisting of the substrate having unevenness and the film-like resin layer, the obtained laminated body is placed between the upper and lower press blocks using a flat press device (planarizing press) having upper and lower press blocks. A laminating method is disclosed in which the surface is processed while heating. In Patent Document 1, in a flattening press, a support point joint capable of swinging is attached to at least one of the upper and lower blocks, and the press point block is connected to a hydraulic cylinder or an air cylinder. Is disclosed. Further, Patent Document 1 describes that the lower press block is actuated by a support point joint capable of swinging when the surface is machined by a flat press device (0010). Furthermore, Patent Document 1 states that “the support and the guide can slide in parallel with the support without play when the lower press block is under the surface in the surface finishing process in order to further improve the effect of the present invention. It is preferable to have a structure in which the guide is loosened immediately before the lower block is pressed. Actually, the guide can move about 1 mm in the direction perpendicular to the sliding direction by expanding the sliding groove on the support. Is more preferable. ”(0050). Furthermore, in FIG. 10 in Patent Document 1, as the laminated body laminated by the invention described in Patent Document 1, a non-uniform thickness is shown.

  By the way, in the conventional general hot press, as a guide means for guiding the movable platen to move toward and away from the fixed platen, normally, a through hole is provided in the square part of the movable platen, and the bush of the slide bearing is respectively provided. Each tie bar is inserted through this bush. Since a sliding bearing is used for the sliding portion of the movable plate and the tie bar, the clearance and play between the bush inner diameter of the sliding bearing and the outer diameter of the tie bar are increased, so that the movable plate is easily inclined and the parallelism to the fixed plate is lowered. Therefore, it is known that the sliding portion between the movable platen and the tie bar is configured by a ball spline (for example, Patent Document 2). Patent Document 2 discloses a fixed platen (fixed platen) provided on a machine base, a rear platen (rear platen), a tie bar connected to the fixed platen and the rear platen, and a movable platen (movable platen) inserted through the tie bar. In the mold clamping mechanism of the molding machine for clamping the mold attached to the movable platen and the fixed platen by moving the movable platen along the tie bar. A mold clamping mechanism of a molding machine is disclosed, in which a ball spline nut (ball spline cylinder) is provided in the insertion hole, and a sliding part of at least the moving platen of the tie bar is used as a ball spline shaft. In Patent Document 2, since the engagement between the sliding portion of the tie bar and the moving platen is a ball spline connection, there is almost no clearance and play at the sliding portion between the tie bar and the moving platen. It is described that it can be translated (0013).

  Further, in the conventional hot press, Patent Document 3 is known as a technique for preventing the movement of the hot platen even if the hot plate expands and contracts due to a temperature change and prevents the movement of the hot platen. In Patent Document 3, a plurality of stages of hot plates are provided between a fixed plate located above and a movable plate located below, and predetermined workpieces respectively placed on these hot plates In the multi-stage hot press apparatus that performs hot pressing simultaneously based on the pressing action between the stationary platen and the movable platen, a locking claw portion is provided on each side of each of the hot plates, and the pressing release state The hot plate support members that respectively engage with the respective locking claws and support the respective hot plates at a predetermined interval are erected so as to be positioned on both sides of the hot plate, An independent guide member having an arc-shaped inner peripheral surface corresponding to the outer peripheral surface of the stay, which is guided in the vertical direction by the stay while abutting on the stays standing fixed at the four corners to be supported. To be located at each hot plate corresponding part of each stay Each of the guide members is provided with an inclined groove having a predetermined width in the horizontal direction inclined toward a substantially central portion of the hot plate on the side surface of the hot plate, and on the side portion corresponding to each guide member of the hot plate. And an engaging projection having an inclined surface corresponding to the inclined groove of the guide member and engaging with the inclined groove, and engaging the engaging protrusion with the inclined groove of the corresponding guide member, respectively. While the guide member is in contact with each stay, each hot plate can be guided in the vertical direction, while the expansion of the hot plate due to the thermal expansion of each of the guide members is inclined with respect to the inclined groove of the guide member. A multi-stage hot press apparatus characterized in that it escapes by sliding on the surface is disclosed.

JP 2002-36272 A JP 2001-260196 A Japanese Patent Publication No. 3-34439

  Among the above-mentioned conventional techniques, in Patent Document 1, as described above, since at least one press block of the upper and lower blocks is provided with a support point joint capable of swinging, it is flat. In the forming press, the movable platen is configured not to be parallel to the fixed platen. As a result, there is a problem that the thickness of the entire laminate cannot be formed uniformly.

  Further, among the above conventional techniques, in Patent Document 2, it is assumed that the moving platen can be moved in parallel by engaging the sliding portion between the tie bar and the moving platen with a ball spline connection. Since there is almost no clearance and play at the sliding part between the tie bar and the moving platen, there is a problem that the movement of the moving platen is obstructed when the moving platen expands and contracts due to temperature changes. It was.

  Further, among the above conventional techniques, in Patent Document 3, a locking claw portion and a hot plate support member for supporting each heating plate at a predetermined interval are provided, and a guide member guided by a stay is provided. It was necessary to provide an engaging protrusion, and the structure was complicated. And in patent document 3, since it is the structure which engages the engagement protrusion of each hot plate with the inclination groove | channel of a guide member, the parallelism of each heat | fever plate | board is by the backlash between a guide member and an engagement protrusion. It was difficult to improve.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a hot press that can improve the parallelism of a movable platen that moves relative to a fixed platen with a simple configuration.

In order to achieve the above object, the hot press according to claim 1 is a hot press that heats and pressurizes a material between the fixed platen and the movable platen, and is on the opposing surface of the fixed platen and the movable platen. Linearly moving means that linearly moves in a direction orthogonal to each other, and a coupling means that couples the linear motion means and the movable platen, and the coupling means is either one of the linear motion means and the movable platen. A shaft fixed to one side so as to extend in a direction perpendicular to the moving direction of the linear motion means, and a bush provided on either one of the linear motion means and the movable plate and slidably fitted to the shaft It is characterized by having these.
In order to achieve the above object, the invention according to claim 2 is characterized in that, in the invention according to claim 1, the coupling means is arranged on a diagonal line of the movable platen.
In order to achieve the above object, the invention according to claim 3 is the invention according to claim 2, wherein the movable plate has a rectangular shape, and the coupling means is located at a position corresponding to each corner of the movable plate. It is characterized by arranging.
In order to achieve the above object, the invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the linear motion means is a ball spline.

In the invention of claim 1, by a coupling means comprising: a shaft fixed so as to extend in a direction orthogonal to the moving direction of the linear motion means; and a bush slidably fitted to the shaft, The movable platen is coupled with the linear motion means in a state having rigidity with respect to the linear movement direction. Therefore, the movable platen is linearly moved in the direction orthogonal to the facing surface by the linear motion means, so that the parallelism is guaranteed. Even when the movable platen expands or contracts with a change in temperature, the bush slides against the shaft without rattling, so that the linear movement of the linear motion means is not hindered.
According to a second aspect of the present invention, in the first aspect of the invention, the movable platen is stably linearly moved by the linear moving unit coupled by each coupling unit by arranging the coupling unit on a diagonal line of the movable platen. In addition, even if the bush slides with respect to each shaft, even if the movable plate expands and contracts with the maximum temperature change, the linear movement of the linear motion means is not obstructed. .
According to a third aspect of the present invention, in the second aspect of the present invention, the movable plate has a rectangular shape, and the movable plate is maximized by arranging the coupling means at a position corresponding to each corner of the movable plate. Even if it expands and contracts as the temperature changes, a configuration is realized in which the linear movement of the linear motion means is not reliably inhibited.
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the linear motion means is a ball spline, thereby realizing a stable linear movement of the movable platen.

According to the first aspect of the present invention, the linear movement means that linearly moves in a direction orthogonal to the opposed surfaces of the fixed plate and the movable platen, and the coupling means that couples the linear movement unit and the movable platen. The coupling means includes a shaft fixed to one of the linear motion means and the movable plate so as to extend in a direction perpendicular to the moving direction of the linear motion means, and the linear motion means and the movable plate. A simple configuration that includes a bush provided on one of the other and slidably inserted into the shaft can improve parallelism without hindering movement of the movable platen relative to the fixed platen. Possible hot presses can be provided.
According to a second aspect of the present invention, in the first aspect of the present invention, by arranging the coupling means on a diagonal line of the movable platen, the movable platen is stabilized by the linear motion unit coupled by the respective coupling units. It is ensured that the linear movement of the linear motion means is obstructed even if the movable platen expands and contracts as the temperature changes to the maximum by sliding the bush against each shaft. A hot press that is not available can be provided.
According to the invention of claim 3, in the invention of claim 2, the movable plate has a rectangular shape, and the movable plate is maximized by arranging the coupling means at a position corresponding to each corner of the movable plate. A hot press capable of realizing a configuration in which the linear movement of the linear motion means is not surely obstructed even if it expands and contracts as the temperature changes can be provided.
According to the invention of claim 4, in the invention of any one of claims 1 to 3, by using the linear motion means as a ball spline, a hot which can realize a stable linear movement of the movable platen. A press can be provided.

First, when one embodiment of the hot press according to the present invention is used in a flattening press for flattening a laminated product laminated with a laminator as a material to be shaped by heating and pressurizing, a figure is shown. It demonstrates in detail based on FIGS. 1-4. In the drawings, the same reference numerals are given to similar or corresponding parts.
The hot press of the present invention generally includes a stationary platen 1 and a movable platen 2 arranged opposite to each other, a heating means (not shown) for heating the material R, and the material R for the stationary platen 1 and the movable platen 2. The pressure plate 3 is pressed between the fixed plate 1 and the fixed plate 1 and the movable plate 2 so as to move linearly in a direction perpendicular to the opposing surfaces of the fixed plate 1 and the movable plate 2 and guide the movable plate 2 to approach and move away from the fixed plate 1. A linear motion means 4; and a coupling means 5 for coupling the linear motion means 4 and the movable platen 2. The coupling means 5 is linearly moved to one of the linear motion means 4 and the movable platen 2. A shaft 50 fixed so as to extend in a direction orthogonal to the moving direction of the means 4, and a bush 51 provided on either one of the linear motion means 4 and the movable platen 2 and slidably fitted to the shaft 50. And a linear motion guide (hereinafter referred to as linear motion guide 5) comprising It is configured.
In the hot press in this embodiment, the movable platen 2 has a rectangular shape, and the coupling means 5 is arranged at a position on the diagonal D corresponding to each corner of the movable platen 2.
Further, in this embodiment, the linear motion means 4 is constituted by a ball spline (hereinafter referred to as a ball spline 4) comprising a ball spline shaft 40 and a ball spline tube 41 engaged with the ball spline shaft 40. ing.
The hot press according to the present invention may be disposed in a vacuum chamber (not shown) so that the laminated body as the material R can be heated and pressurized in a vacuum atmosphere as necessary. it can.

  As shown in FIGS. 1 and 3, the fixed platen 1 is arranged on the upper side, the rear plate 6 is arranged on the lower side, and the movable platen 2 is arranged between the fixed platen 1 and the rear plate 6. The fixed platen 1, the rear plate 6 and the movable platen 2 are each formed in a rectangular shape in plan view, and the fixed platen 1 and the rear plate 6 are each fixed with a nut 8 through which tie bars 7 are inserted. Are held at predetermined intervals. The opposing surfaces of the fixed platen 1 and the movable platen 2 are respectively formed with smooth surfaces 1a, 2a for pressurizing the material R, and an electric heater for heating the material R or heating at a predetermined temperature. A heating means (not shown) such as a flow path through which fluid is circulated and supplied is provided. In this embodiment, guide rollers 9 for guiding the feeding of the carrier film CF on which the material R is placed are provided on opposite side edges on the upper surface of the movable platen 2.

  A ram 3 that constitutes a pressing means is disposed substantially at the center of the rear panel 6 in plan view. The drive rod 3 a of the ram 3 is joined to the approximate center in plan view of the lower surface of the movable platen 2. By driving the drive rod 3 a of the ram 3 to extend and retract, the movable platen 2 is moved toward and away from the fixed platen 1. A contact member 60 is erected on the upper surface of the rear panel 6. The abutting member 60 is abutted when the movable platen 2 is lowered, and restricts its lowered position.

  At least an intermediate portion of each tie bar 7 is formed with ball rolling portions 40a such as ball spline grooves parallel to the axial direction to constitute the ball spline shaft 40. In this embodiment, as shown in FIG. 4, each ball spline shaft 40 is connected in series so that a pair of ball spline cylinders 41 having flanges 41a is located at the upper and lower ends. Are inserted in succession. As is known, each ball spline 4 has almost no play or play between the ball spline shaft 40 and the ball spline cylinder 41, and the ball spline cylinder 41 is guided and moved in a straight line with high accuracy by the ball spline shaft 40.

  A cylindrical housing 53 is fitted around each of the ball spline cylinders 41 so as to be positioned between the flanges 41a of the both ball spline cylinders 41. Each end part of 53 and the flange 41a located up and down are each connected with the volt | bolt 54. As shown in FIG. As shown in a plan view in FIG. 2, female screw holes 53 a are respectively formed in the directions on the diagonal lines D of the side surfaces of the respective housings 53, and as shown in FIG. 4, A screw portion 50a formed at the base end portion of the shaft 50 is screwed into the female screw hole 53a. That is, the shaft 50 is fixed to a ball spline cylinder 41 that moves with little play relative to the ball spline shaft 40 so as to extend in a direction perpendicular to the moving direction, and has rigidity. .

  As shown in FIG. 2, the corner corresponding to the tie bar 7 of the movable platen 2 is notched, and a hole 55 is formed in the direction on the diagonal line D. The linear motion guide 5 is formed in the hole 55. Each bush 51 is held. In the assembled state of the hot press of the present invention, the shaft 50 fixed to the housing 53 of the ball spline cylinder 41 is slidably fitted in each bush 51. The bush 51 is provided with a bearing held by a cage on the inner peripheral surface thereof in contact with the shaft 50, such as LM stroke model number ST45B manufactured by THK Co., Ltd. What can slide is adopted.

  In order to configure in this way, before attaching the tie bar 7 between the fixed platen 1 and the rear plate 6 with the nut 8, the bush 51 is fitted into the hole 55 of the movable platen 2 and both the ball spline shafts 40 are mounted on the ball spline shaft 40. The ball spline cylinders 41 and 41 are engaged to connect the housings 53 to both the flanges 41a and 41a, and the screw portions 50a of the shafts 50 are screwed into the female screw holes 53a of the housing 53 so that the shafts 50 are movable. Assembling can be performed by inserting the end portions of the tie bars 7 into the fixed plate 1 and the rear plate 6 and fixing them with the nuts 8.

  In the hot press constructed as described above, the material R is placed on the continuous carrier film CF, the carrier rod 3a is retracted and the movable platen 2 is lowered from the fixed platen 1 in the carrier plate CF. The film CF is sent and the material R is carried between the fixed platen 1 and the movable platen 2. In the hot press of the present invention, as the material R, for example, the laminated material R1 and the laminated material R2 to be laminated are an insulating layer and a conductor layer patterned to form a predetermined circuit on the surface thereof. Or a substrate having a patterned conductor layer and a film-like resin layer, and the surface of the material R in which the material to be laminated R1 and the laminated material R2 are laminated by a laminator is smooth with a uniform thickness. Although it can be used as a flattening press for shaping, it can also be applied to a laminator for laminating the material to be laminated R1 and the laminated material R2.

  Thereafter, the drive rod 3 a of the ram 3 is extended and driven to move the movable platen 2 close to the fixed platen 1, and the material R is pressurized between the fixed platen 1 and the movable platen 2 with a predetermined pressure. At this time, the surfaces 1a and 2a of the fixed platen 1 and the movable platen 2 are heated to a predetermined temperature by a heating means (not shown), and the surface of the material R is shaped smoothly.

  Here, the shaft 50 is fixed to a housing 53 integral with each ball spline cylinder 41 in a state of rigidity so as to extend in a direction perpendicular to the tie bar 7 and toward the diagonal line D, and the movable platen. The bushes 51 are provided on the diagonal lines D of the two corners. The shaft 50 is slidably fitted into the bushes 51 with little play and the linear motion guide 5 is configured. Yes. The ball spline cylinders 41 that support the housing 53 provided with the shaft 50 are engaged with the spline shafts 40 of the tie bars 7 so as to be movable up and down with little play. Therefore, when the movable platen 2 is moved up and down by driving the ram 3, each ball spline cylinder 41 is guided to linearly move in a direction orthogonal to the opposing surfaces of the fixed platen 1 and the movable platen 2, and the ball Two spline cylinders 41 are provided to generate a large moment. Therefore, the movable platen 2 can stably move with a high degree of parallelism with respect to the fixed platen 1. Even when the movable platen 2 changes in temperature by the heating means and expands / contracts, each corner of the movable platen 2 is opposed to the fixed platen 1 and the movable platen 2 with no play by the linear motion guide 5. Since it is guided to move linearly in a direction orthogonal to 1a and 2a, the vertical movement of each tie bar 7 of each ball spline cylinder 41 with respect to the ball spline shaft 40 is not hindered. The ball spline cylinders 41 are not limited to being provided as a pair as in this embodiment, and a single or three or more ball spline cylinders can be engaged with the ball spline shaft 40 continuously, It can be set to a predetermined length in the axial direction. Further, the linear motion means 4 that linearly moves in a direction orthogonal to the opposed surfaces of the fixed platen 1 and the movable platen 2 of the present invention is configured such that the ball spline cylinder 41 is connected to the ball screw shaft of the tie bar 7 as in the embodiment described above. It is not limited to the ball spline engaged with 40, but an air bush that supplies compressed air to the surface of the tie bar 7 can also be adopted. Furthermore, the coupling means 5 of the present invention can be provided with the shaft 50 on the movable platen 2 side and the bush 51 on the ball spline tube 41 side.

It is the partial front view which showed one Embodiment of the hot press of this invention. FIG. 2 is a plan view of the movable board shown in FIG. 1. It is a side view of FIG. It is a principal part expanded sectional view of the hot press of this invention.

Explanation of symbols

D: Diagonal line, R: Material, 1: Fixed platen, 2: Movable platen, 3: Clamping means, 4: Ball spline (linear motion means), 5: Linear motion guide (coupling means), 6: Rear plate, 7 : Tie bar, 40: Ball spline shaft, 41: Ball spline tube, 50: Shaft, 51: Bush

Claims (4)

A hot press that heats and pressurizes a material between a fixed platen and a movable platen,
Linear movement means that linearly moves in a direction orthogonal to the opposing surfaces of the fixed plate and the movable platen, and coupling means that couples the linear movement unit and the movable platen,
The coupling means includes a shaft fixed to one of the linear motion means and the movable plate so as to extend in a direction orthogonal to the moving direction of the linear motion means, and the other of the linear motion means and the movable plate. And a bushing slidably fitted to the shaft.   2. The hot press according to claim 1, wherein the coupling means is disposed on a diagonal line of the movable platen.   The hot press according to claim 2, wherein the movable plate has a rectangular shape, and the coupling means is arranged at a position corresponding to each corner of the movable plate. The hot press according to any one of claims 1 to 3, wherein the linear motion means is a ball spline.