Press molds and methods for manufacturing parallel press products

Abstract

To provide a press die which can adjust a parallel degree between upper and lower dies, in a state of being attached to a press machine.SOLUTION: One of the upper and lower dies in a press machine comprises: a floating unit 30; multiple wedge pieces 63; and a piece lock mechanism (adjustment screw 67, lock nut 69). The floating unit 30 comprises: a first plate 40 and a second plate 50 which face each other and share a die center line O, in which with a point on the die center line O as a fulcrum, a relative inclination between the first plate 40 and the second plate 50 can be adjusted. The multiple wedge pieces 63 are radially arranged with the die center line O of the floating unit 30 as a reference. The wedge pieces 63 are fitted toward the die center line O between the first and second plates 40, 50 and hold a relative inclination state of the first and second plates 40, 50. The piece lock mechanism fixes the wedge pieces 63 in a state in which the wedge pieces 63 are fitted.SELECTED DRAWING: Figure 8

Description

Technical Field

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[0001] The present invention relates to a press mold and a method for manufacturing a parallel press product.

Background Art

[0002] For example, in the technique disclosed in Patent Document 1, a laminated structure in which an adhesive layer is laminated between a flat lead frame, an intermediate member, and a semiconductor chip is sandwiched between a mold and a press roller and pressed, so that the adhesive layer is compressed and plastically deformed. It is described that the parallelism between the upper surface of the semiconductor chip and the lower surface of the lead frame in the laminated structure is not more than a predetermined ratio of the thickness of the adhesive layer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In this specification, a product whose upper end surface and lower end surface are parallel and which is manufactured by pressing with a press mold is referred to as a "parallel press product". For example, a product such as the laminated structure of Patent Document 1 corresponds to a parallel press product. Among parallel press products, there are those that require the parallelism between the upper end surface and the lower end surface to be several μm or less. In response to this requirement, the press mold needs to make the parallelism between the press surface of the upper mold and the press surface of the lower mold several μm or less.

[0005] From the perspective of ensuring accuracy of the press surface using only the press die, if the upper and lower dies are each composed of multiple die plates, it is preferable to polish them in an assembled state. However, if some die plates have electrical components such as heaters installed, and there are concerns about electrical leakage due to wire breakage or coolant ingress, polishing them as a single unit is not possible. Even if the die plates are polished individually, errors may occur during assembly. Furthermore, even if the upper and lower dies can be polished as a single unit, tilting may occur when they are attached to the press machine.

[0006] This invention was created in view of these points, and its objective is to provide a press die that allows adjustment of the parallelism between the upper and lower dies while it is attached to a press machine. Another objective is to provide a method for manufacturing parallel pressed products with ensured parallelism accuracy. [Means for solving the problem]

[0007] One aspect of the present invention is a press die in which a workpiece is pressed between the press surface (72) of an upper die (700) and the press surface (82) of a lower die (80). One of the upper or lower die comprises a floating unit (30), a plurality of wedge pieces (63), and a wedge lock mechanism (67, 69).

[0008] The floating unit includes a first plate (40) and a second plate (50) that face each other and share the mold centerline (O), and is configured so that the relative inclination between the first plate and the second plate can be adjusted with respect to a point on the mold centerline as a pivot point.

[0009] Multiple wedge pieces are arranged radially at three or more locations relative to the mold centerline of the floating unit. The wedge pieces are fitted between the first and second plates toward the mold centerline and maintain the relative inclination between the first and second plates. The wedge lock mechanism fixes the wedge pieces in the position where they are fitted.

[0010] This press die is mounted on a press machine (90), and with the press surfaces of the upper and lower dies in contact and the relative inclination of the first plate and the second plate adjusted by tracing, multiple wedge pieces can be fixed in place. Therefore, the parallelism between the upper and lower dies can be suitably adjusted by tracing adjustment while mounted on the press machine.

[0011] Another aspect of the present invention is a method for manufacturing a parallel-pressed product in which the upper and lower end surfaces are parallel, by pressing a workpiece (100) between the pressing surface (72) of the upper die (700) and the pressing surface (82) of the lower die (80) of a press die (200) attached to a press machine (90). For example, the parallel-pressed product is an adhesive laminate in which an adhesive layer (14) is laminated between a plurality of flat plate-shaped parts (11, 12, 13).

[0012] The configuration of the press die is the same as that of the press die invention described above. This manufacturing method includes a floating step (S1), a block insertion step (S2), a block locking step (S3), and a workpiece pressing step (S5).

[0013] In the floating process, the press die is attached to the press machine (90), the press surfaces of the upper and lower dies are brought into contact with each other, and the relative inclination between the first plate and the second plate of the floating unit is adjusted.

[0014] In the insert process, the wedge insert is inserted toward the center line of the mold. In the locking process, the wedge insert is fixed in place by the locking mechanism.

[0015] In the workpiece pressing process, the workpiece is clamped between press dies and pressed. This allows for the production of parallel-pressed products with guaranteed parallelism. For example, in adhesive laminates, the thickness of the adhesive layer can be made uniform. [Brief explanation of the drawing]

[0016] [Figure 1]Schematic diagram of the upper die rising (without workpiece) of the press device according to an embodiment. [Figure 2] Schematic diagram of the upper die descending (without workpiece) of the press device according to an embodiment. [Figure 3] Schematic diagram of workpiece pressing of the press device according to an embodiment. [Figure 4] (a) Plan view and (b) front view of an adhesive laminate which is an example of a parallel press product. [Figure 5] Front view of the upper die module of the press die according to an embodiment. [Figure 6] Cross-sectional view taken along line VI-VI of FIG. 5 (bottom view of the first plate). [Figure 7] Cross-sectional view taken along line VII-VII of FIG. 6 (cross-sectional view of the floating unit). [Figure 8] Schematic cross-sectional view taken along line VIII-VIII of FIG. 6 showing the initial state. [Figure 9] Flowchart of the manufacturing method of the parallel press product. [Figure 10] Schematic diagram showing the wedge cam insertion ~ cam lock process at ψ = 0. [Figure 11] Schematic diagram showing the wedge cam insertion ~ cam lock process at ψ> 0. [Figure 12] Schematic diagram showing the wedge cam insertion ~ cam lock process at ψ <0 [Figure 13] Partial cross-sectional view of the floating unit of the press die according to another embodiment.

MODE FOR CARRYING OUT THE INVENTION

[0017] A press die according to an embodiment of the present invention and a method for manufacturing a parallel press product will be described based on the drawings. Different from a general press die that forms various product shapes with a punch and a die, the press die of this embodiment has true flat surfaces on both the press surfaces of the upper die and the lower die. This press die is dedicated to parallel press products with parallel upper and lower end surfaces, and can be shared for different types of parallel press products with slightly different bottom areas and heights within a predetermined range. Once the press die is attached to the press machine, it is basically not replaced and is used as a "press device" in which the press machine and the press die are integrated.

[0018] Referring to FIGS. 1 to 3, the configuration and operation of a press device 900 according to an embodiment will be described. FIGS. 1 and 2 show the state where the upper die 700 is raised and lowered without a workpiece, and FIG. 3 shows the state where the workpiece 100 is set in the device and pressed. Although the press die 200 is integrated into the press device 900 when attached to the press machine 90, for the sake of convenience, the part surrounded by the dashed line frame is regarded as the press die 200. The center line of the press die 200 is represented as the die center line O.

[0019] The press machine 90 has a top plate 92 supported by columns 93 and a back plate 94 above a base 91. A work window 95 is formed in the back plate 94 to facilitate the work on the back side of the press die 200. Due to the driving force of the drive motor 96, the slide 98 is guided by the columns 93 and the guide rods 97 suspended from the top plate 92 to move up and down (see FIGS. 1 and 2). The upper die 700 of the press die 200 is attached to the slide 98 via an adapter 99. The lower die 80 of the press die 200 is attached to the base 91.

[0020] The press die 200 includes an upper die 700 and a lower die 80. As shown in Figure 6, the planar shapes of the upper die 700 and the lower die 80 are approximately circular. In this embodiment, the upper die 700 consists of a floating unit 30 and a parting section 70. The configuration and function of the floating unit 30 will be described later. The parting section 70, together with the lower die 80, performs the pressing function and corresponds to the upper die in the narrow sense. The workpiece 100 is pressed between the pressing surface 72 of the parting section 70 of the upper die 700 and the pressing surface 82 of the lower die 80 (see Figure 3). For example, the drive motor 96 is driven and controlled by servo control to bring the pressing load closer to a target value.

[0021] If the parting section 70 is considered the upper die in the narrow sense, the combined portion of the floating unit 30 and the parting section 70 may be called the "upper die module 700". The order in which the floating unit 30 is attached until the press machine 90 is completed does not matter. The floating unit 30 may be attached to the adapter 99 of the press machine 90 first, and then the set of the upper die parting section 70 and the lower die 80 may be attached to the press machine 90.

[0022] Figure 4 shows an example of a parallel press product, which is the workpiece 100, consisting of an adhesive laminate. The adhesive laminate consists of multiple flat plate-shaped parts 11, 12, and 13 with adhesive layers 14 laminated between them. In this example, a roughly circular SiC ingot 13 (semiconductor) is sandwiched and bonded between two square plate-shaped jig plates 11 and 12. Adhesive layers 14 (wax) are laminated between the upper jig plate 11 and the upper surface of the SiC ingot 13, and between the lower surface of the SiC ingot 13 and the lower jig plate 12. For example, the square surface size of the jig plates 11 and 12 is about 200 mm on each side, and the thickness of the SiC ingot 13 is up to about 50 mm.

[0023] Since the thickness of the adhesive layer 14 needs to be uniform, the parallelism of the end faces of both jig plates 11 and 12 must be a few micrometers or less, that is, they must have an accuracy of one-thousandth of a millimeter. To meet this requirement, the press die 200 must not only ensure the flatness of the press surface 72 of the upper die 700 and the press surface 82 of the lower die 80, but also have the parallelism between the press surfaces 72 and 82 themselves be a few micrometers or less.

[0024] Here, the upper die parting section 70 and the lower die 80 are not actually a single plate, but are composed of multiple die plates, such as a plate on which the heater is installed, a plate with a cooling passage formed therein, and a plate that covers it. To prevent electric leakage due to heater wire breakage or coolant ingress, the multiple die plates cannot be polished together as a single unit. Even if the die plates with press surfaces 72 and 82 are polished individually, errors may occur during assembly. Furthermore, even if electrical components such as heaters are not installed and the upper die parting section 70 and the lower die 80 can be polished together as a single unit, tilting may occur when attaching them to the press machine 90.

[0025] Therefore, the press die 200 of this embodiment is designed so that the parallelism between the upper die parting section 70 and the lower die 80 can be adjusted while it is attached to the press machine 90. Next, with reference to Figures 5 to 8, the configuration of the upper die module 700, and in particular the floating unit 30, will be described. In Figures 7 and 8, which are cross-sectional views in the vertical direction, the vertical dimensional ratios of the angle θ of the inclined surface 55, etc., are exaggerated in the illustration.

[0026] As shown in Figures 5 and 7, the floating unit 30 includes a first plate 40 and a second plate 50. The first plate 40 and the second plate 50 face each other and share the mold centerline O. The floating unit 30 is configured so that the relative inclination between the first plate 40 and the second plate 50 can be adjusted with respect to a point on the mold centerline O as the pivot point.

[0027] Specifically, the first plate 40 and the second plate 50 have ball receiving holes 41 and 51 with concave spherical surfaces formed on the mold centerline O, and a ball 61 is received across the ball receiving holes 41 and 51 of both plates 40 and 50. The first plate 40 and the second plate 50 are prevented from shifting their centers and are able to float with the apex of the ball 61 as a pivot point.

[0028] As shown in Figure 6, the planar shape of the first plate 40 is a nearly circular hexagon, and the second plate 50 is similar. Although not perfectly circular, for convenience, the direction of the straight line passing through the mold centerline O is called the radial direction, the side closer to the mold centerline O is called the radially inward side, and the side further from the mold centerline O is called the radially outward side.

[0029] The first plate 40 has a plurality of accommodating grooves 43 formed radially with respect to the mold centerline O. In this embodiment, eight accommodating grooves 43 are formed at 45° equal intervals. The radially inner ends of the accommodating grooves 43 communicate with annular relief grooves 42 formed around the ball receiving hole 41. The radially outer side of the accommodating grooves 43 is closed by an outer wall 46.

[0030] A wedge block 63 is housed in each of the eight housing grooves 43. In other words, in this embodiment, eight wedge blocks 63 are arranged radially with respect to the mold centerline O. The wedge block 63 is a stepped rectangular parallelepiped block, and both sides 633 are guided by the inner walls of the housing grooves 43, allowing it to slide radially on the first plate 40 (see Figure 6). The radially inner portion of the wedge block 63 is referred to as the front, and the radially outer portion as the rear.

[0031] As shown in Figure 8, the second plate 50 has an inclined surface 55 formed so as to move away from the first plate 40 radially outward from around the ball receiving hole 51. The inclined surface 55 is tapered around its entire circumference. The inclination angle θ of the inclined surface 55 is, for example, less than 1°, and the gradient is about 1 / 100. A relief surface 56 is formed on the outer edge side of the inclined surface 55.

[0032] In the initial state shown in Figure 8, the wedge piece 63 is positioned towards the radially outward side. There are gaps between the first contact portion 634 on the upper end surface and the groove bottom surface 44 of the housing groove 43, and between the rear lower end surface 636 and the relief surface 56 of the second plate 50. The second contact portion 635, which is the corner of the front lower end surface, is in light contact with the inclined surface 55 due to gravity. A tail seat 64 is provided on the rear end surface of the wedge piece 63, against which the tip surface of the adjustment screw 67 abuts.

[0033] The adjustment screw 67 is screwed into a screw hole 47 formed in the outer peripheral wall 46 of the first plate 40. In the initial state, the tip surface of the adjustment screw 67 may be in light contact with the tail seat 64, or it may not be in contact at all. A lock nut 69 is held in a free position in the middle of the adjustment screw 67. After the wedge piece 63 is fitted between the first plate 40 and the second plate as described later, the lock nut 69 restricts the rotation of the adjustment screw 67, thereby fixing the wedge piece 63 in place.

[0034] As shown in Figures 5 and 7, the final fastening bolts 39 are inserted through holes 59 formed in the flange portion 58 of the second plate 50 and screwed into threaded holes 49 formed in the first plate 40. Eight final fastening bolts 39 are provided alternately with the wedge pieces 63 in the circumferential direction. When the floating unit 30 is floating, the final fastening bolts 39 are in a loosely fastened state, as shown on the left side of Figure 7. After the wedge pieces 63 are fixed, the final fastening bolts 39 are fully tightened, as shown on the right side of Figure 7.

[0035] Next, the manufacturing method for parallel press products according to this embodiment will be described with reference to the flowchart in Figure 9 and Figures 10 to 12. Figures 10 to 12 show the state in which the second plate 50 of the floating unit 30 floats in accordance with the inclination of the press surface 82 of the lower die 80, assuming that the upper and lower surfaces of the parting portion 70 of the upper die 700 are parallel.

[0036] In the flowchart explanation, the symbol "S" represents a step. Steps S1 to S4, excluding the final S5, are also steps in the "method for adjusting the parallelism of a press die." In steps S1 to S4, eight wedge pieces 63 are fitted between the first plate 40 and the second plate toward the die centerline O according to the rotation angle of the adjustment screw 67, maintaining the relative inclination between the first plate 40 and the second plate 50. The lock nut 69 fixes the wedge pieces 63 by restricting the rotation of the adjustment screw 67 in the position where the wedge pieces 63 are fitted. In this embodiment, the adjustment screw 67 and the lock nut 69 constitute a "wedge lock mechanism."

[0037] In the floating process of S1, the press die 200 is attached to the press machine 90, and the upper die 700 is lowered so that the press surfaces 72 and 82 of the upper die 700 and the lower die 80 come into contact with each other (see Figure 2). The flatness of the press surfaces 72 and 82 is individually guaranteed. This adjusts the relative inclination between the first plate 40 and the second plate 50 of the floating unit 30.

[0038] Here, the floating angle ψ of the floating unit 30 is defined as follows: As shown in Figure 10, when a plane perpendicular to the die centerline O (for example, a relief surface 56) on the second plate 50 is parallel to the end face of the first plate 40, the floating angle ψ is 0. When the parallelism between the press surface 72 of the upper die 700 and the press surface 82 of the lower die 80 is 0, the floating angle ψ is 0.

[0039] In the viewing direction shown in Figure 11, the floating angle ψ is considered positive (ψ>0) when the second plate 50 rotates counterclockwise around the vertex P of the ball 61 as a pivot point. When the floating angle ψ is positive, the second plate 50 approaches the first plate 40 to the right of the mold centerline O in this viewing direction.

[0040] In the viewing direction shown in Figure 12, the floating angle ψ when the second plate 50 rotates clockwise around the vertex P of the ball 61 is considered negative (ψ < 0). When the floating angle ψ is negative, the second plate 50 moves away from the first plate 40 to the right of the mold centerline O in this viewing direction.

[0041] In the S2 inserting process, the adjustment screw 67 is rotated, causing the tip of the adjustment screw 67 to push against the tail seat 64, which moves the wedge insert 63 toward the mold centerline O and inserts it between the first plate 40 and the second plate 50. When the wedge insert 63 is inserted toward the mold centerline O, the first contact portion 634 contacts the groove bottom surface 44 of the housing groove 43, and the second contact portion 635 contacts the inclined surface 55. In other words, the adjustment screw 67 is rotated until the first contact portion 634 contacts the groove bottom surface 44 of the housing groove 43 while the second contact portion 635 of the wedge insert 63 moves up the inclined surface 55. For example, if the adjustment screw 67 with a pitch of 1.0 is rotated 1 / 10 (36°) relative to an inclined surface 55 with a gradient of 1 / 100, the wedge insert 63 moves 1 μm upward.

[0042] The greater the gap between the first plate 40 and the second plate 50, the deeper the wedge piece 63 is inserted. Regarding the relationship between the floating angle ψ and the distance the wedge piece 63 moves from the initial state to completion of insertion, if the distances moved when ψ=0, ψ>0, and ψ<0 are X0, X1, and X2 respectively, then "X1 <X0<X2」となる。

[0043] In the process of inserting the eight wedge pieces 63, key points include tightening all adjustment screws 67 with the same torque and tightening them evenly in a diagonal order. The back plate 94 of the press machine 90 has a work window 95, which improves workability on the back side of the mold. In addition, the eight wedge pieces 63 are arranged at 45° intervals and have symmetry in the front, back, left, and right directions, making it easy for the operator to grasp the three-dimensional tilt. By inserting the eight wedge pieces 63 in an even manner, the relative tilt state between the first plate 40 and the second plate 50, which have been adjusted to match, is maintained with high precision.

[0044] In the S3 locking process, the wedge piece 63 is fixed in place by the locking mechanism in the position where it is inserted. Specifically, the wedge piece 63 is fixed by tightening each of the eight lock nuts 69 against the outer wall 46 of the first plate 40, thereby restricting the rotation of the adjustment screw 67.

[0045] In the final tightening process of S4, the eight final fastening bolts 39, which were in a temporarily tightened state, are fully tightened, and the second plate 50 and the first plate 40 are fastened together. The work on the back side of the mold is also easy to perform, such as tightening the lock nuts 69 and fully tightening the final fastening bolts 39, because a work window 95 is formed in the back plate 94.

[0046] In the work press process of S5, the workpiece 100 is sandwiched between the press die 200 and pressed (see Figure 3). In this embodiment, heaters installed in the upper die parting section 70 and the lower die 80 are energized, and the press die 200 is heated to a predetermined temperature. Once the press die 200 is attached to the press machine 90, it is basically not replaced and mass production continues as a single press device 900. However, it is also possible to manufacture different types of parallel press products with slightly different base areas and heights within a predetermined range using the same press device 900.

[0047] In this embodiment, the press die 200 is attached to the press machine 90, and the eight wedge pieces 63 can be fixed in their fitted positions when the press surfaces 72, 82 of the upper die 700 and the lower die 80 are in contact with each other and the relative inclination of the first plate 40 and the second plate 50 is adjusted by tracing. Therefore, the parallelism between the upper die 700 and the lower die 80 can be suitably adjusted by tracing adjustment while the die is attached to the press machine 90.

[0048] Furthermore, in the method for manufacturing parallel pressed products according to this embodiment, parallel pressed products with guaranteed parallelism can be manufactured using the above-mentioned press die. For example, in the bonded laminate of the SiC ingot 13 and the jig plates 11 and 12, the thickness of the adhesive layer 14 can be made uniform.

[0049] (Other embodiments) (a) The lower mold may be equipped with the floating unit 30 instead of the upper mold. In other words, in the present invention, either the upper mold or the lower mold is equipped with the floating unit 30. Furthermore, the first plate 40 and the second plate 50 of the floating unit 30 may be arranged so as to be inverted vertically compared to the above embodiment.

[0050] (b) In the above embodiment, the floating process is performed with the final fastening bolt 39 in a partially tightened state, and after the wedge piece 63 is fitted and locked, the final fastening bolt 39 is fully tightened to fasten the first plate 40 and the second plate 50. In contrast, in the other embodiment shown in Figure 13, the second plate 50 is flexibly fastened to the first plate 40 from the initial stage using a stud bolt 37 and a spring 38. The spring 38, provided between the head of the stud bolt 37 and the flange portion 58 of the second plate 50, biases the second plate 50 toward the first plate 40. In this configuration, the final tightening process S4 in the flowchart of Figure 9 is unnecessary.

[0051] (c) The floating unit 30 is not limited to a configuration that includes a ball 61 which is a separate component from the first and second plates 40 and 50. For example, it may be configured such that a convex sphere integrally formed on one plate and a concave sphere formed on the other plate contact at a single point on the mold centerline O.

[0052] (d) The number of wedge pieces 63 is not limited to 8. If the flatness of the press surfaces 72 and 82 is ideally 0, then at least 3 wedge pieces 63 should be arranged radially with respect to the die centerline O. However, considering the actual undulations of the press surfaces 72 and 82, it is preferable to provide 8 or more wedge pieces 63 as in the above embodiment.

[0053] (e) In the above embodiment, the adjustment screw 67 only pushes the tail seat 64 of the wedge piece 63. However, in other embodiments, the wedge piece 63 may be made pushable and pullable by rotating an adjustment screw screwed onto the rear end face of the wedge piece 63 in forward and reverse directions. This allows the wedge piece 63 to be pulled back and reinserted if it is accidentally pushed too far during the insertion process.

[0054] (f) The wedge piece 63 is not limited to a configuration in which its side surface 633 is guided and slides against the inner wall of the housing groove 43. For example, a recess formed on the bottom surface of the wedge piece may be guided and slides against a rail formed on the second plate.

[0055] (g) The locking mechanism is not limited to one consisting of an adjustment screw 67 and a lock nut 69. It can be configured by combining some linear motion mechanism that moves the wedge piece 63 in a straight line with means for clamping the linear motion mechanism at a predetermined position.

[0056] (h) The adhesive laminate to which the manufacturing method of the present invention applies is not limited to an adhesive laminate of jig plates 11 and 12 and a SiC ingot 13, but may also be an adhesive laminate of other semiconductors or non-semiconductors. Furthermore, the manufacturing method of the present invention is not limited to an adhesive laminate in which the adhesive layer 14 is compressed, but may also apply to any parallel pressed product in which parallelism between the upper and lower end surfaces is required.

[0057] The present invention is not limited in any way to the embodiments described above, and can be implemented in various forms without departing from its spirit. [Explanation of symbols]

[0058] 100...workpieces (parallel press products), 200... Press molds, 30 ···Floating unit, 40 ···First plate, 50 ···Second plate, 63...Wedge piece, 67...Adjustment screw, 69...Lock nut, 700... Upper die (upper die module), 72... Press surface, 80...Lower mold, 82...Pressing surface, 90... Press machine.

Claims

1. A press die in which a workpiece (100) is pressed between the press surface (72) of the upper die (700) and the press surface (82) of the lower die (80), The upper mold or the lower mold is, A floating unit (30) includes a first plate (40) and a second plate (50) that face each other and share a mold centerline (O), and is configured such that the relative inclination between the first plate and the second plate can be adjusted with respect to a point on the mold centerline as a pivot point, The floating unit is arranged radially at three or more locations with respect to the mold centerline, and is fitted between the first plate and the second plate toward the mold centerline, and maintains the relative inclination state between the first plate and the second plate, A wedge lock mechanism (67, 69) that fixes the wedge in the position in which the wedge is inserted, Equipped with, A press die that can be attached to a press machine (90), wherein the press surfaces of the upper die and the lower die are in contact with each other, and the relative inclination of the first plate and the second plate is adjusted to conform, and a plurality of wedge pieces can be fixed in place in the insertion position.

2. The press die according to claim 1, wherein the first plate and the second plate of the floating unit have ball receiving holes (41, 51) having concave spherical surfaces formed on the center line of the die, and the ball (61) received in the ball receiving hole is capable of floating with the vertex as a pivot point.

3. The press die according to claim 1, wherein a plurality of the wedge pieces are housed in radially formed housing grooves (43) in the first plate, and when fitted toward the center line of the die, a first contact portion (634) contacts the groove bottom surface (44) of the housing groove and a second contact portion (635) contacts an inclined surface (55) formed in the second plate.

4. The wedge piece is fitted toward the center line of the mold according to the rotation angle of the adjustment screw (67), The press die according to claim 1, wherein the spool lock mechanism comprises the adjustment screw and a lock nut (69) that restricts the rotation of the adjustment screw.

5. A method for manufacturing a parallel-pressed product in which the upper and lower end surfaces are parallel, by pressing a workpiece (100) between the press surface (72) of the upper die (700) and the press surface (82) of the lower die (80) of a press die (200) attached to a press machine (90), The upper mold or the lower mold is, A floating unit (30) includes a first plate (40) and a second plate (50) that face each other and share a mold centerline (O), and is configured such that the relative inclination between the first plate and the second plate can be adjusted with respect to a point on the mold centerline as a pivot point, The floating unit is arranged radially at three or more locations with respect to the mold centerline, and is fitted between the first plate and the second plate toward the mold centerline, and maintains the relative inclination state between the first plate and the second plate, A wedge lock mechanism (67, 69) that fixes the wedge in the position in which the wedge is inserted, Equipped with, A floating step (S1) is performed in which the press die is attached to the press machine, the press surfaces of the upper die and the lower die are brought into contact with each other, and the relative inclination of the first plate and the second plate of the floating unit is adjusted to match. The wedge insert is inserted toward the center line of the mold in a insert insertion step (S2), The wedge-type insert is fixed in place by the insert lock mechanism in a insert locking step (S3), A workpiece pressing step (S5) in which the workpiece is sandwiched between the press die and pressed, A method for manufacturing parallel press products, including those included.

6. The method for manufacturing a parallel press product according to claim 5, wherein the parallel press product is an adhesive laminate in which an adhesive layer (14) is laminated between a plurality of flat plate-shaped parts (11, 12, 13).

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