JPH0335037B2 - - Google Patents

Description

[Detailed description of the invention]

(Technical Field) The present invention relates to a step-type continuous press device, and more specifically, a sheet-like workpiece in which predetermined sheet-like laminated materials are piled up is pressed in different areas in a plurality of areas arranged in series in the direction of transport. The present invention relates to a step-type continuous press device that simultaneously performs pressing operations under certain conditions to bond laminated materials together. (Prior art) A predetermined pressing operation is performed on a sheet-like workpiece made of stacked sheet-like laminated materials,
Tape-shaped sheet-shaped laminate material is continuously supplied to a type of sheet-shaped press-molded product that is manufactured by integrally bonding the sheet-shaped laminate materials that make up these sheet-shaped workpieces. While sheet-like workpieces are continuously formed by There are things that are manufactured. For example, in a flexible printed wiring board manufactured by bonding a cover film to the printed wiring surface of a flexible base film on which printed wiring is applied,
Normally, a tape-shaped sheet-like workpiece is continuously formed by continuously overlapping a tape-shaped base film and a cover film. A predetermined pressing operation is continuously performed on the sheet-like workpiece, and as a result, flexible printed wiring boards made of the base film and cover film are bonded together in a continuous manner. It is becoming more and more commonly manufactured. By the way, when manufacturing sheet-like press-molded products such as flexible printed wiring boards in which the formation of a sheet-like workpiece and pressing operations are performed continuously, conventionally, the pressing operations are performed using rollers. A roller press method is used. (Problems) However, with this roller press method, the pressing force against the sheet-like workpiece is small, and there is a problem that sufficient pressing force cannot be obtained.Also, since the pressing area is small, the pressing time is short. There were problems such as not being able to secure enough time for curing the adhesive, cooling time after bonding, etc. Furthermore, during pressure pressing using rollers, each sheet-like laminated material that makes up the sheet-like workpiece tends to shift or wrinkle, and the press-formed product is prone to defects such as scratches and bubbles, as well as poor adhesion. There was a problem. In order to eliminate these drawbacks, a normal press device equipped with a flat press plate is adopted, and the sheet-like workpiece is intermittently transferred. The pressing operation can be performed continuously in a stepwise manner using a flat press plate on the sheet-shaped workpiece, but when manufacturing such sheet-shaped press-formed products, usually , it is necessary to perform various auxiliary press operations such as pre-pressing, pre-heating, post-pressing, post-cooling, etc. before and after the main press operation, so it is not possible to use a normal press machine alone. This alone is undesirable because the production efficiency of sheet-like press-molded products will be significantly reduced. In addition, on the other hand, a plurality of press devices are arranged in series in the transport direction of the sheet-like workpiece that is moved intermittently, and a plurality of press devices are arranged in series in the transport direction of the sheet-like workpiece. It is conceivable to simultaneously perform predetermined press operations on each of the areas. However, in such cases, although it is possible to manufacture sheet-like press-formed products with good manufacturing efficiency,
There is a problem that it is difficult to operate these multiple press devices at the same time, and it is also extremely difficult to match the press surfaces of these multiple press devices. If the material is cut or a step is formed at the boundary between each press device, there is a risk of serious trouble. Therefore, in the past, it was difficult to employ a pressing method using such a normal press device, and a roller press method, which had the various problems described above, was exclusively employed. (Solution Means) Against this background, the present invention makes it possible to press a given sheet-like workpiece at the same time under different pressing conditions in a plurality of areas located in series in the transport direction. This is a press device that performs press operation while intermittently transporting the sheet-like workpiece at a feed rate corresponding to the area, thereby applying different pressing conditions to multiple areas of the sheet-like workpiece. This step-type continuous press apparatus is designed to be able to press continuously without fear of cutting the sheet-like workpiece or creating steps. The gist of this is (a) a fixed platen equipped with a plurality of press areas corresponding to the plurality of areas of the sheet-like workpiece, and (b) a plurality of press areas similar to the fixed platen. (c) a cylinder body is attached to a column erected on the fixed plate, and a ram is connected to the movable plate; By moving the movable plate closer to the fixed plate,
(d) on opposing surfaces of the fixed platen and the movable platen, which are located opposite to each other in the main press area where the main press operation is performed on the sheet-like workpiece among the plurality of press areas; , a pair of main press plates, each of which is fixedly attached and between which a pressing force is exerted by the main cylinder between opposing surfaces; and (e) in an auxiliary press area other than the main press area among the plurality of press areas. a first press plate fixedly attached to the opposing surface of either the stationary plate or the movable plate so as to be flush with the main press plate;
(f) an auxiliary press plate consisting of a second press plate disposed on the opposing surface of the other of the fixed plate and the movable plate so as to be displaceable in the direction facing the fixed plate and the movable plate; In the auxiliary press area, the second press plate constituting the auxiliary press plate is interposed between the fixed plate or the movable plate on which the second press plate is disposed on the opposing surface, and The second press plate is moved within a predetermined range with respect to the fixed plate or movable plate in a state where the distance between the opposing surfaces with the first press plate can be larger than the distance between the opposing surfaces of the pair of main press plates. (g)
It is arranged between the flotation plate and the movable plate or the fixed plate to which the first press plate constituting the auxiliary press plate is attached, and allows them to approach and separate from each other. The present invention is configured to include an auxiliary cylinder that applies a desired pressing force between the first press plate and the second press plate. Here, the press plate is provided with a heating function and a cooling function as necessary, and the temperature conditions of each press area are set based on these heating functions and cooling functions. (Function/Effect) According to this step-type continuous press device, the sheet-like workpiece is pressed between the flat main press plate and the auxiliary press plate, so that the sheet-like workpiece that occurs when the roller press method is adopted is reduced. Problems such as insufficient pressing force against the workpiece, insufficient pressing time, insufficient adhesive curing time, or insufficient cooling time after bonding can be satisfactorily resolved. Moreover, during the press operation of the sheet-shaped workpiece, it is possible to effectively avoid misalignment or wrinkles in the sheet-like laminated materials that make up the sheet-formed workpiece. This can significantly reduce the occurrence of defects such as scratches and bubbles and poor adhesion. Furthermore, in the step type continuous press apparatus according to the present invention, a common fixed platen and a movable platen are used for each press area, so that it is possible to perform multiple press operations compared to the case where the conventional press apparatuses are simply installed side by side. It is extremely easy to perform these operations at the same time, and what is more, the pressing surfaces of the main press plate and the auxiliary press plate arranged on either the fixed platen or the movable platen are arranged in such a way that they are aligned in advance. Therefore, there is no problem such as when the sheet-like workpiece is cut at the boundary of the press area or there is a difference in level during the press operation. Therefore, continuously formed tape-like sheet-like workpieces can be efficiently press-formed without causing serious problems. Furthermore, in the step-type continuous press device according to the present invention, in the auxiliary press area of the fixed platen or the movable platen, excluding the main press area, a second press plate is provided on the opposite side to the side where the press surfaces are made to coincide with each other. A flotation plate is disposed on the back of the second press plate, and the second press plate can be moved up and down within a predetermined range with respect to the main press plate of the main press area as the flotation plate provided on the back of the second press plate moves. In addition, an auxiliary cylinder is interposed between the floating plate and the movable plate or the fixed plate facing thereto to bring them closer to each other and move them apart, and the press force in the auxiliary press area is applied by the auxiliary cylinder. Therefore, it is possible to apply a desired press force in the auxiliary press area independently from the main press area or other auxiliary press areas when there are multiple auxiliary press areas. Therefore, there is an advantage that the workpiece can be press-formed with high precision in each press area. Incidentally, if an auxiliary press plate is arranged in the auxiliary area of the fixed plate or movable plate without intervening such a floating plate, the press forces in each press area will be mutually transmitted via the fixed plate and the movable plate. As a result, not only will the press forces in these press areas become inaccurate, but also the fixed platen and/or the movable platen may be deformed in a curved manner based on the difference in press force in each press area. , therefore, that configuration is difficult to adopt. Incidentally, the step type continuous press apparatus according to the present invention, like the flexible printed wiring board,
Although it can be particularly suitably used in the production of sheet-like press-formed products of a type in which tape-like sheet-like workpieces are continuously supplied, it is not necessarily limited to this, and sheet-like workpieces can be used. It can also be used in the production of sheet-like press-molded products in which the workpiece is preliminarily divided into predetermined regions and formed by lamination and adhesion. Even when used to manufacture sheet-like press-formed products of this type, it is easier and easier to produce high-quality products than when the above-mentioned normal press equipment is used alone or in parallel. It has the advantage of being able to produce efficiently. (Example) Hereinafter, in order to clarify the present invention more specifically, one example thereof will be described in detail based on the drawings. Here, we will use a press device that can perform one stage of auxiliary press operation (preliminary press operation and post-press operation) at the same time before and after the main press operation. An example in which a workpiece is press-formed continuously in a stepwise manner will be described. First, in FIGS. 1 to 3, reference numeral 10 is a stationary plate whose position is fixed, and whose planar form is a longitudinal rectangle, located at the center in the width direction.
A press area of a predetermined width is formed over the entire length in the longitudinal direction. In this embodiment, the press area is divided into three equal parts in the longitudinal direction, and from the left side in FIG. As shown, a sheet-like workpiece 13 on which predetermined sheet-like laminated materials continuously supplied in the form of a tape are superimposed is subjected to post-pressing from the preliminary press area side over the press area of the fixed platen 10. It is designed to be supplied and transported towards the area. Note that the sheet-like workpieces 13 are normally stacked and formed in a continuous manner in a pre-stage of the press device and then supplied. Two pairs of columns 14 are erected on the stationary plate 10 so as to sandwich the main press area in the longitudinal direction central part thereof in the width direction, and the stationary plate 10 is movable while being guided in the vertical direction by these columns 14. A board 16 is provided. This movable platen 16 includes the fixed platen 1
It has a longitudinal rectangular shape corresponding to the press area of No. 0, and its lower surface is the press area facing the press area of the stationary platen 10. The press area is divided into three equal parts in the longitudinal direction, and each area is divided into three equal parts in the longitudinal direction.
A preliminary press area, a main press area, and a post-press area are respectively opposed to the corresponding areas of the fixed platen 10. In addition, such a movable plate 16
is slidably fitted to each column 14 at a bracket 18 that projects laterally. Further, a single-acting main cylinder 20 with a large operating force is attached to the upper end of each column 14, and a ram 22 of this main cylinder 20 is attached to the movable platen 16.
, i.e., the central upper surface of the main press area. On the other hand, in the main press area, on the opposing surfaces of the fixed platen 10 and the movable platen 16, there are hot plates 2 each serving as a main press plate having a heating function.
6 are fixedly disposed via a heat insulating plate 24. Further, in the preliminary press area and the post-press area, on the opposing surface of the movable platen 16, a heat plate 26 or a cooling plate 28 as a first press plate having a heating function or a cooling function is installed, respectively. is fixedly arranged through the
On the opposing surface of the fixed platen 10, a hot plate 2 serving as a second press plate having a heating function or a cooling function.
6 or a cooling plate 28 are respectively disposed so as to be movable in a direction opposite to the first press plate via the heat insulating plate 24. That is, in this embodiment, a pair of hot plates 2 disposed in these preliminary press areas
6, 26 and a pair of cooling plates 28, 28 disposed in the post-press area, respectively, constitute auxiliary press plates. Here, two hot plates 26 and one cooling plate 28 disposed on the movable platen 16 side are connected to the movable platen 1.
6, they are fixedly disposed such that their lower pressing surfaces are flush with each other. Further, on the stationary platen 10 side, a hot plate 26 is directly disposed in the main press area and is held in a fixed position. and a cooling plate 28 are disposed on the upper surface of the levitation plate 30 each having a predetermined thickness, and the fixed plate 1 of the levitation plate 30 is
By moving up and down relative to 0, each can move a predetermined distance in the up and down direction. As shown in FIGS. 1 and 2, each of the auxiliary press areas of the stationary platen 10 has a top surface height lower than that of the main press area by a predetermined dimension. For each auxiliary press area whose upper surface height is lowered, the floating plate 30
is arranged to be movable in the vertical direction. As clearly shown in Figure 1, the floating plate 3
The thickness of 0 is set to be slightly smaller than the step size between the main press area and the auxiliary press area, so that the distance between the press surfaces in the main press area: l ₁ The distance between the pressing surfaces: l ₂ and l ₃ are set to be slightly larger. As shown in FIGS. 1 and 2, in this embodiment, there are brackets 32 that are located approximately at the center in the longitudinal direction of the widthwise side surfaces of these flotation plates 30 and project laterally. Double-acting auxiliary cylinders 34 are fixedly attached to these brackets 32 by bolts 39, respectively. In addition, these auxiliary cylinders 34
The piston rods 36 are each connected at their distal ends to a bracket 38 projecting from the side of the movable platen 16. These auxiliary cylinders 34 allow the floating plate 30 and the movable plate 16 to approach and separate from each other, and as a result, the hot plate 26 arranged on the fixed plate 10 side in the preliminary press area and the post press area Alternatively, the cooling plate 28 is arranged in the main press area with respect to the heating plate 26 or the cooling plate 28 arranged and fixed at each corresponding position on the movable platen 16 side, respectively.
Regardless of the distance between opposing surfaces between 6 and 26, they can be moved closer to each other and separated from each other independently. Next, the operation of this embodiment device will be explained. First, in order to perform a press operation from the state shown in FIGS. 1 to 3, that is, from the state in which the movable platen 16 is held in its raised position by the protruding operation of the piston rod 36 by each auxiliary cylinder 34, a sheet-like cover must be used. With the transfer operation of the workpiece 13 stopped, the protruding hydraulic pressure of each auxiliary cylinder 34 is released, and the movable platen 16 is lowered by its own weight. After the lowering operation of the movable platen 16 is completed,
The main cylinder 20 is operated to press the movable platen 16 against the fixed platen 10 with a predetermined main pressing force, while applying floating hydraulic pressure (retraction hydraulic pressure) to each auxiliary cylinder 34 according to the respective pressing conditions. , the floating plate 30 is floated from the fixed plate 10, and each corresponding area of the sheet-like workpiece 13 is pressed between the floating plate 30 and the movable plate 16 with a desired pressing force. At the same time, the temperature of each hot plate 26 and cooling plate 28 is set according to the press conditions of each press area, and between each opposing hot plate 26 and cooling plate 28, the sheet shape located between them is The corresponding areas of the workpiece 13 are heated and cooled. As a result, desired preliminary press operation, main press operation, and post-press operation are performed on each corresponding area of the sheet-like workpiece 13 in each press area of the preliminary press area, main press area, and post-press area. It will be carried out. That is, during such a press operation, the press force by the main cylinder 20 is directly applied between the hot plates 26 and 26 in the main press area, and the main press operation is performed on the sheet-like workpiece 13. On the other hand, as shown in FIG. 4, in the preliminary press area and the post-press area, the floating plate 30 is moved from the fixed plate 10 side by the auxiliary cylinder 34 to a predetermined dimension: δ1,
The hot plates 26 and 26 in the pre-press area and the post-press area are moved away by δ2 toward the movable platen 16.
26 and the cooling plates 28, 28, respectively, the press force by the auxiliary cylinder 34 is directly applied, and the auxiliary press operation on the sheet-like workpiece 13 is performed under different press conditions from the main press area. This will be implemented in the following year. In addition, when forming a flexible printed wiring board by laminating and bonding, the following are generally set.
The relationship between each press condition in the preliminary press area, main press area, and post-press area is shown in Table 1 below as a reference example.

[Table] Furthermore, the moving distances of the floating plate 30 from the fixed plate 10 in the preliminary press area and the post-press area: δ1 and δ2 are determined in consideration of such press conditions. Next, after the pressing operation is completed, the working hydraulic pressure of the main cylinder 20 is released, and a protruding hydraulic pressure is applied to each auxiliary cylinder 34 to cause each piston rod 36 of the auxiliary cylinder 34 to protrude, thereby moving the movable platen 16 to the above-mentioned position. Raise it to the raised position. In addition, by this protrusion operation, the flotation plate 30 in the preliminary press area and the post-press area is
Each of them is moved toward the fixed platen 10 and brought into contact with the fixed platen 10 (see FIG. 1). After the lifting operation of the movable platen 16 is completed,
The sheet-like workpiece 13 is transferred rightward in FIG. 1 by a distance corresponding to the divided press areas, and after this transfer, the same pressing operation as described above is performed. Thereafter, the same operation as described above is repeated. In this way, the sheet-like workpiece 13 is intermittently transferred in the transfer direction to the area corresponding to the press area, which is located in series in the transfer direction of the sheet-like workpiece 13. , a predetermined preliminary press operation, a main press operation, and a post-press operation can be performed continuously, and a tape-like sheet-like workpiece 13 such as a flexible printed wiring board can be continuously formed and fed. This allows sheet-like press-molded products to be formed continuously in a stepwise manner. As is clear from the above description, here, preliminary pressurization and preheating operations are performed in the preliminary press area, and postpressurization and cooling operations are performed in the post press area. As described above, according to the apparatus of this embodiment, the preliminary press operation and the main press are performed on a plurality of areas located in series in the transport direction of the tape-shaped sheet-like workpiece 13, as in the conventional roller press method. It is possible to perform the operation and post-pressing operation continuously, and moreover, these three types of pressing operations can be performed simultaneously in one molding cycle, and the pressing operation is always performed under the same temperature conditions in each press area. As a result, sheet-like press-molded products can be manufactured more efficiently than when a normal press machine is used alone. In addition, in the present embodiment apparatus, the sheet-like workpiece 1
Since each region of 3 is pressed between flat press plates (hot plate 26, cooling plate 28), sufficient pressing force can be applied to the sheet-shaped workpiece 13. Moreover, sufficient press time can be secured. Therefore, problems such as insufficient pressing force on the sheet-like workpiece 13, insufficient press time, adhesive curing time, or cooling time after bonding, such as in the roller press method, can be successfully solved. It can be done. Furthermore, according to the apparatus of this embodiment, since the sheet-like workpiece 13 is pressed between flat press plates, each sheet constituting the sheet-like workpiece 13 is It is possible to effectively avoid misalignment, wrinkles, etc. in the laminated material, and it is therefore possible to obtain a press-molded product of excellent quality with few defects such as scratches and bubbles, and with few defects in adhesion. In addition, in the device of this embodiment, each press plate (hot plates 26, 26 and cooling plate 2
Since the pressing surfaces of 8) are made to coincide with each other, during press operation, the sheet-like workpiece 1
3 is cut at the boundary between each press area or there is no difference in level. Furthermore, in the case of such a press device, the press pressure of the main cylinder 20 is directly applied to the main press area, and the press operation is performed by the press pressure of the main cylinder 20, while the preliminary press area In each auxiliary press area of the post-ures area, the floating plate 30 is floated from the fixed plate 10, so that the press pressure of the main cylinder 20 is not applied, and the press pressure of the auxiliary cylinder 34 is applied exclusively. Since the press operation is now carried out in the same way, the press forces in each press area do not interfere with each other, and the advantage is that the desired press force can be set accurately in each press area. There is. Therefore, there is an advantage that high press accuracy can be obtained in each press area. In addition, as described above, since the press forces in each press area do not interfere with each other, the fixed platen 10
There is also an advantage that no bending deformation is caused to the fixed platen 10 and/or the movable platen 16 due to the difference in pressing force between them, and therefore the fixed platen 10 and/or the movable platen 16, and thus the press device. Another advantage is that maintenance is easy. Although one embodiment of the present invention has been described above, this is a literal illustration, and it goes without saying that the present invention should not be interpreted as being limited to this specific example. For example, in the above embodiment, one stage of the preliminary press area and the post-press area were provided before and after the main press area, but it is also possible to provide only one of the preliminary press area and the post-press area. It is possible, and it is also possible to provide a plurality of preliminary press areas and post-press areas before and after the main press area. Furthermore, in the embodiment described above, the pressing surfaces of the press plate disposed on the movable platen 16 side are made to match in each press area so that they are flush with each other, while the floating plate 30 is disposed on the fixed plate 10 side. However, while aligning the press surfaces of the press plate disposed on the fixed platen 10 side,
It is also possible to arrange the floating plate 30 on the movable plate 16 side. Furthermore, in the embodiment described above, an example was described in which the sheet-shaped workpiece 13 that is continuously supplied in the form of a tape was the object of press forming. It is not necessarily necessary to be continuously supplied in the form of a tape, but it may be in a shape that is pre-divided corresponding to each press area. Even when press-forming sheet-like workpieces with such shapes, it is possible to easily and efficiently produce high-quality products compared to using ordinary press equipment alone or in parallel. It can be produced. Although not listed in detail, it goes without saying that the present invention can be implemented with various changes, modifications, improvements, etc. without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIGS. 2 and 3 are respectively its -
They are a sectional view and a - sectional view. FIG. 4 is a front view of the embodiment shown in FIG. 1 in another operating state. 10: Fixed plate, 13: Sheet-like workpiece, 1
6: Movable plate, 20: Main cylinder, 24: Heat insulation plate,
26: Hot plate, 28: Cooling plate, 30: Levitation plate, 3
4: Auxiliary cylinder, 36: Piston rod.

Claims (1)

[Scope of Claims] 1. A sheet-like workpiece in which predetermined sheet-like laminated materials are piled up is simultaneously pressed under different pressing conditions in a plurality of regions located in series in the direction of transport, and the laminated materials are laminated. A step-type continuous press device for laminating and bonding materials, comprising a fixed platen having a plurality of press areas corresponding to the plurality of areas of the sheet-like workpiece, and a plurality of presses similar to the fixed platen. a movable platen arranged to face the fixed platen in the vertical direction; a cylinder body is attached to a column erected on the fixed platen; and a ram is connected to the movable platen; A main cylinder that moves the movable platen toward and away from the fixed platen by moving the movable platen, and a main cylinder at an opposing position in the main press area where the main press operation is performed on the sheet-like workpiece among the plurality of press areas. a pair of main press plates, each of which is fixedly attached to opposing surfaces of the fixed plate and the movable plate, between which pressing force is exerted by the main cylinder; and among the plurality of press areas, a first press fixedly mounted on an opposing surface of either the fixed plate or the movable plate, which are located in an auxiliary press area other than the main press area, so as to be flush with the main press plate; an auxiliary press plate consisting of a plate and a second press plate disposed on the opposing surface of the other of the fixed plate and the movable plate so as to be displaceable in the direction facing the fixed plate and the movable plate; In the auxiliary press area, the second press plate constituting the auxiliary press plate is interposed between the fixed plate or the movable plate on which the second press plate is disposed on the opposing surface, and The second press plate is moved within a predetermined range with respect to the fixed plate or movable plate in a state where the distance between the opposing surfaces with the first press plate can be larger than the distance between the opposing surfaces of the pair of main press plates. a flotation plate displaceably supported within the levitation plate; and a flotation plate disposed between the flotation plate and the movable plate or the fixed plate to which the first press plate constituting the auxiliary press plate is attached, to bring them closer together. , an auxiliary cylinder that provides a desired pressing force between the first press plate and the second press plate in the auxiliary press area, the auxiliary cylinder separating the first press plate and the second press plate in the auxiliary press area; The press operation is performed while intermittently transferring the sheet-like workpiece at a corresponding feed amount, thereby making it possible to press the plurality of areas of the sheet-like workpiece continuously under different pressing conditions. Step-type continuous press equipment.