Manufacturing apparatus and manufacturing method for deep-drawn workpieces

Abstract

An object of the present invention is to provide a method and an apparatus for making it easier to draw in a workpiece and improving the yield in a conventional manufacturing apparatus equipped with a wrinkle removing plate. This specification discloses a manufacturing apparatus that forms a workpiece to be processed into a drawn workpiece having a desired shape by press molding. In this press molding, an upper and lower pair of molds composed of a first mold having a cavity and a second mold having a core are used. Among them, the manufacturing equipment includes: a wrinkle removing plate disposed around the surface of the core that contacts the workpiece to be processed and perpendicular thereto; and at least one spacer disposed above the wrinkle removing plate, the spacer being made of a fiber reinforced resin.

Description

Technical Field

[0001] The present invention relates to a manufacturing apparatus and a manufacturing method for a deep-drawn product obtained by molding a material to be processed into a desired shape by press forming. Background Art

[0002] In deep drawing using a press, generally, an upper and lower pair of dies are used, which are composed of a first die (also called a concave die, a punch die) having a cavity and a second die (a convex die) having a core (or a punch).

[0003] In addition to the press forming of a metal plate as a material to be processed (a blank or a workpiece) that has been performed in the past, deep drawing can also be widely applied to the press forming of a fiber-reinforced composite resin (so-called FRP) as a material to be processed.

[0004] When the material to be processed is a fiber-reinforced composite resin or a composite of the fiber-reinforced composite resin and a metal, generally, an intermediate material (prepreg) is formed by pre-impregnating a thermosetting resin such as epoxy resin, phenolic resin, or polyester resin, or a thermoplastic resin in a reinforcing fiber material such as glass fiber or carbon fiber, and impregnating the glass fiber, carbon fiber, etc. with the resin to form a semi-cured state. The prepreg is heated and pressed by a molding press to manufacture a desired processed product.

[0005] In the deep drawing of a fiber-reinforced composite resin using a molding press, as the core enters the cavity, the reinforcing fiber material is drawn into the deep drawing space (the gap between the cavity and the core).

[0006] This drawing-in is significant at the corner portions of the processed product, which causes local amorphous tensile strain and interval expansion and contraction of the reinforcing fiber material, changes in the density of the reinforcing fiber material, resin offset, wrinkles on the side walls, etc. of the processed product, and in some cases, fiber breakage. This results in local deviation of the strength of the processed product, overall strength reduction, etc., which are the causes of deterioration of the quality of the molded product and generation of defective products.

[0007] To avoid the above-mentioned adverse conditions, a material holding jig called a "wrinkle removing plate" has been used in the past. The wrinkle removing plate is a frame-shaped plate body (a picture frame-shaped plate body) that surrounds the outer edge of the material to be processed (hereinafter, assumed to be a prepreg), and also has the function of a blank support for holding the material to be processed at a specified position of the die.

[0008] Figure 7 It is a schematic diagram for explaining an example of a known deep drawing machine. Figure 7 FIG. (a) is a side view of a deep drawing machine composed of a first die having a cavity 1 and a second die having a core 2. Figure 7 FIG. (b) is Figure 7Remove the first die of (a) and the workpiece material, and view the top view of the main part of the second die from above.

[0009] The deep drawing machine is composed of a pair of dies as described above. The core 2 provided in the second die 200 rises and enters the cavity 1 provided in the first die 100 to perform deep drawing on the prepreg as the workpiece material 4.

[0010] And a wrinkle removing plate 3 is provided so as to surround the outer periphery of the core 2 of the second die 200.

[0011] Figure 7 The deep drawing machine in the shown form is fixed to the machine base (the base of the press), the second die 200 rises relative to the first die 100, and the core 2 of the second die 200 is pressed into the cavity 1 of the first die 100. In addition, there is also a form in which the pair of dies is turned upside down.

[0012] As shown in Figure 7 the top view shape shown in (b), the wrinkle removing plate 3 is composed of a single frame-shaped plate body and is provided so as to be able to rise and fall along the outer edge of the core 2 provided in the second die 200. The wrinkle removing plate 3 is usually composed of a metal plate of the same system as the die.

[0013] During deep drawing, the workpiece material (for example, prepreg) 4 is placed on the wrinkle removing plate 3 (in the state shown in Figure 7 (a)). The wrinkle removing plate 3 is lifted and lowered by the telescopic member 5, and is lifted before the second die 200 starts to rise or at the same time as the second die starts to rise, so as to clamp the workpiece material 4 between the lower surface of the first die 100 and the upper surface (opposing surface) of the second die 200.

[0014] Next, the second die 200 is further lifted in the direction of the large arrow by the pressing mechanism 6, and the core 2 is pressed into the cavity 1, thereby deep drawing the workpiece material 4 into a specified shape.

[0015] The wrinkle removing plate 3 is a device for holding and aligning the workpiece material 4. However, in deep drawing, its main function is to appropriately move the tissue of the peripheral part of the workpiece material generated in the deep drawing process of the workpiece material between the cavity and the core, mainly to avoid the generation of wrinkles on the side wall or breakage due to thickness reduction.

[0016] As documents disclosing the prior art related to such a wrinkle removing plate, for example, in addition to patent documents such as Patent Document 1 and Patent Document 2, there are also a large number of general documents.

[0017] Patent Document 1 discloses a compression molding apparatus and method for a fiber-reinforced composite molded product, which uses an upper mold having a concave portion (cavity) and a lower mold having a convex portion (core), and is provided with a wrinkle removal plate disposed on the outer periphery of the lower mold.

[0018] In addition, Patent Document 2 discloses a general-purpose molding press having a concave mold (corresponding to the above-mentioned upper mold called a die), a convex mold (corresponding to the above-mentioned lower mold called a punch), and a wrinkle removal plate, and a method and apparatus for avoiding wrinkles and fractures in a molded product during the drawing process of a sheet material by injecting high-pressure liquid into the above-mentioned mold.

[0019] (Prior Art Documents)

[0020] (Patent Documents)

[0021] (Patent Document 1) Japanese Patent No. 6587771 Gazette

[0022] (Patent Document 2) Japanese Patent Application Laid-Open No. 07-144234 Gazette Summary of the Invention

[0023] Technical Problem to be Solved

[0024] In the drawing process, especially in the drawing part where a concave-shaped portion (cavity) and a convex-shaped portion (core) are combined at the corner, drawing of the reinforcing fibers is likely to occur, resulting in deviation, cutting between the fibers, and reduction in the film thickness of the resin layer. If only the wrinkle removal plate (also called an anti-wrinkle plate) used in the drawing machine is used, sometimes it will be clamped between the wrinkle removal plate and the upper mold, and accordingly, it may hinder the drawing of the material to be processed and a highly accurate processed product cannot be obtained.

[0025] The main function of the wrinkle removal plate is to avoid excessive drawing of the constituent materials of the above-mentioned material to be processed and achieve appropriate drawing.

[0026] An object of the present invention is to provide a method for making it easier to draw a material to be processed in the above-mentioned conventional manufacturing apparatus provided with a wrinkle removal plate.

[0027] Solution to the Problem

[0028] In order to achieve the above object, the manufacturing apparatus and manufacturing method of the drawn product of the present invention are characterized in that at least one spacer is used and disposed above the wrinkle removal plate.

[0029] The representative structure of the present invention is as follows.

[0030] The wrinkle removal plate 3 of the present invention is used in a press machine for deep drawing products that form a material to be processed 4 into a desired shape by press molding. In this press molding, an upper and lower pair of molds composed of a first mold 100 having a cavity 1 and a second mold 200 having a core 2 are used. The present invention adopts the following structure.

[0031] [1] A manufacturing device that forms a material to be processed into a deep drawing product with a desired shape by press molding. In this press molding, an upper and lower pair of molds composed of a first mold having a cavity and a second mold having a core are used. Among them,

[0032] The manufacturing device includes:

[0033] A wrinkle removal plate disposed around a plane perpendicular to the plane of the core that contacts the material to be processed; and at least one spacer disposed above the wrinkle removal plate,

[0034] The spacer is made of fiber-reinforced resin.

[0035] [2] The present invention provides a manufacturing method for a deep drawing product of a manufacturing device that forms a material to be processed into a deep drawing product with a desired shape by stamping using an upper and lower pair of molds composed of a first mold having a cavity and a second mold having a core. Among them:

[0036] The manufacturing device includes:

[0037] A wrinkle removal plate disposed around a plane perpendicular to the plane of the core that contacts the material to be processed; at least one spacer disposed on the wrinkle removal plate,

[0038] The manufacturing method:

[0039] A step of disposing the material to be processed on the wrinkle removal plate;

[0040] A step of raising the second mold together with the wrinkle removal plate so that the surface of the core that contacts the material to be processed contacts the material to be processed;

[0041] While pulling the material to be processed between the core and the cavity, further raising the second mold to perform a pressing process on the material to be processed, and lowering the second mold to obtain a deep drawing product step,

[0042] The spacer is made of fiber-reinforced resin.

[0043] [3] The manufacturing method according to [2], wherein the material to be processed is a fiber-reinforced composite resin containing at least one resin selected from the group consisting of thermoplastic resins and thermosetting resins, or the material to be processed is a composite material of a fiber-reinforced resin containing at least one resin selected from the group consisting of thermoplastic resins and thermosetting resins and a metal selected from aluminum, high-strength steel, and titanium.

[0044] [4] The manufacturing method according to [3], wherein the material to be processed is a laminate.

[0045] [5] The manufacturing method according to [2], wherein the wrinkle-removing plate is composed of a plurality of wrinkle-removing plate pieces arranged on the outer side of the core mold, and each of the wrinkle-removing plate pieces has a pair of arms extending at a right angle to one another.

[0046] [6] The manufacturing method according to any one of [2] to [5], wherein the thickness of the spacer is the same as or greater than the thickness of the material to be processed.

[0047] The present invention is not limited to the above-described structure and the structure of the embodiments described in the following embodiments, and various modifications can of course be made without departing from the technical idea of the present invention.

[0048] Effects of the Invention

[0049] According to the structures of [1] and [2] above, by providing a wrinkle-removing plate, the generation or breakage of wrinkles (notches and cracks in the molded product) is suppressed by avoiding the resulting fiber misalignment, cutting, and reduction in the film thickness of the resin layer. Further, since a spacer is used, it is possible to prevent excessive clamping between the wrinkle-removing plate and the upper mold, and it is easier to draw in the material to be processed.

[0050] In addition, if the spacer is made of metal as in the past, it will thermally expand during hot pressing, and it is difficult to control the thickness of the spacer. That is, it is difficult to accurately adjust the draw-in ease in terms of thickness. On the other hand, if a fiber-reinforced resin such as carbon fiber-reinforced resin is used as the spacer as in the present invention, it is possible to manufacture a drawn product with a low coefficient of thermal expansion and extremely high accuracy in terms of thickness.

[0051] In addition, in the present invention, since molding is performed under heating, even if molding is repeatedly performed under heating, the deformation of the spacer itself is extremely small, and the high dimensional accuracy of the obtained drawn product is maintained, and the yield is improved.

[0052] The above-mentioned structures [1] and [2] are the workpieces (thermoplastic resins, thermosetting resins, fiber-reinforced composite resins containing thermoplastic resins or thermosetting resins, or composites of these resins and metals selected from aluminum, high-strength steel, and titanium) of the above-mentioned [3], and are particularly useful. When these materials are subjected to pressing, they are prone to forming waves. Once waves are formed, it is difficult to pull the materials into the cavity between the mold cavity and the core. However, with this structure, the formation of waves can be suppressed, making it easier to pull the materials.

[0053] The structures of the above-mentioned [1] and [2] are useful for the laminate described in the above-mentioned [4]. In the case of a laminate, for example, it is assumed that prepregs of fiber-reinforced composite resins are overlapped. By laminating, the workpiece becomes thicker and it is difficult to pull it in. However, by providing a spacer, the ease of pulling can be improved. Therefore, even for a laminate, it is possible to manufacture a deep-drawn product with high precision.

[0054] In the structures of the above-mentioned [1] and [2], by adopting the wrinkle-removing plate of the above-mentioned [5], the wrinkle-removing plate can be manufactured at low cost and excessive pulling of the workpiece can be suppressed. For example, when the workpiece is a metal, the corner can be formed by thinning the part due to ductility, but since the metal in the reduced part moves to other parts, the metal plate forms waves due to the increased metal. Eventually, the wavy material (the material with unevenness) is not pulled into the mold. Therefore, when the workpiece is a metal, it is preferable to place the wrinkle-removing plate around (360°), and it is desired that the processed product has no unevenness. On the other hand, in the case of a fiber-reinforced composite resin (CFRP), since the corners are formed by uniformly aggregating fibers, it is limited to the range of the part where the corners are formed, and there are fewer cases where waves are formed in other parts. Therefore, there is no need to place the wrinkle-removing plate all around. Instead, when the anti-wrinkle plates are arranged only at four points near the corners, the workpiece will not be overly squeezed, and it is easy to obtain a fiber-reinforced composite product with high precision.

[0055] In addition, according to the structure of the above-mentioned (6), the workpiece in the part in contact with the wrinkle-removing plate is not subjected to the pressure from the first mold, so it is easier to pull in and can handle thick workpieces. Description of the Drawings

[0056] Figure 1 It is a schematic diagram of the manufacturing apparatus of Example 1 applying the wrinkle-removing plate 3 and the spacer 8.

[0057] Figure 2 It is a schematic diagram of placing the workpiece 4 on the wrinkle-removing plate 3 in the manufacturing apparatus of Example 1.

[0058] Figure 3It is a schematic diagram showing that in the manufacturing apparatus of Example 1, the second mold contacts the work material 4 and starts to deform.

[0059] Figure 4 It is a schematic diagram showing that in the manufacturing apparatus of Example 1, the first mold and the second mold are closest to the work material 4 and are in a state of being heated and pressed in a specified shape.

[0060] Figure 5 It is a schematic diagram showing that in the manufacturing apparatus of Example 1, the second mold is lowered to obtain a drawn workpiece.

[0061] Figure 6 It is a schematic diagram of the manufacturing apparatus of Example 2 which has wrinkle-removing plates 3 in the form of wrinkle-removing plate pieces on the outer sides of the four corners of the core.

[0062] Figure 7 It is a schematic diagram of a conventional manufacturing apparatus without a spacer.

[0063] (Explanation of reference numerals)

[0064] 1 Cavity

[0065] 2 Core

[0066] 3 Wrinkle-removing plate

[0067] 31, 32, 33, 34 Wrinkle-removing plate pieces

[0068] 4 Work material

[0069] 5 Telescopic member

[0070] 6 Pressing mechanism

[0071] 7 Machine base

[0072] 8 Spacer

[0073] 100 First mold

[0074] 200 Second mold Detailed description of the implementation mode

[0075] Hereinafter, with reference to the accompanying drawings of the embodiments, the implementation modes of the present invention will be described in detail.

[0076] Embodiment

[0077] Embodiment 1

[0078] Figure 1 It is a schematic diagram of a manufacturing apparatus (drawing machine) for a drawn workpiece of the wrinkle-removing plate according to Embodiment 1 applicable to the molding press involved in the present invention. Figure 1Figure (a) is a side view of a deep drawing machine composed of a first die with a cavity 1 and a second die with a core 2.

[0079] Figure 1 Figure (b) is Figure 1 a top view of the main part of the second die when the first die and the work material in Figure (a) are removed and observed from above.

[0080] This deep drawing machine is the same as that described in Figure 7 and is composed of a pair of dies. The core 2 provided in the second die 200 rises and enters the cavity 1 provided in the first die 100 to perform deep drawing on the laminate of the prepreg as the work material 4.

[0081] In this embodiment, a rectangular wrinkle removal plate 3 is arranged on the outer periphery of the core 2 of the second die 200, and four rectangular parallelepiped spacers 8 are provided on the wrinkle removal plate 3 along the straight line portions of the outer periphery of the rectangular wrinkle removal plate 3.

[0082] (Wrinkle removal plate)

[0083] The wrinkle removal plate 3 is arranged on the second die 200 in a liftable manner together with the second die 200. The wrinkle removal plate 3 is connected to the second die 200 through a telescopic member 5 composed of a spring mechanism.

[0084] Before the second die 200 starts to rise, the work material 4 is placed on the surface of the wrinkle removal plate 3, and the second die 200 is raised to perform deep drawing.

[0085] Therefore, the wrinkle removal plate 3 has a plane on which the work material 4 can be arranged, and a hole is provided near the center of the plane for the core 2 of the second die 200 to gradually tilt up.

[0086] (Spacer)

[0087] In the deep drawing machine of Embodiment 1, spacers 8 are provided on the plane of the wrinkle removal plate 3 on which the work material 4 can be arranged. The spacers 8 are arranged above the wrinkle removal plate 3 along the outer edge of the wrinkle removal plate 3, and four rectangular parallelepiped spacers 8 are provided on each side. In addition, the position of the spacers is not particularly limited as long as it is on the plane of the wrinkle removal plate 3, and can be changed according to the size and shape of the work material 4. It can also be moved during molding.

[0088] In Embodiment 1, the spacers used are composed of a fiber-reinforced resin of carbon fiber in epoxy resin.

[0089] In addition, the fiber-reinforced resin of the spacer is not limited to the carbon fiber-reinforced resin of epoxy resin, and the resin can be a resin composition containing one of thermosetting resins and thermoplastic resins. Examples of the thermosetting resin include epoxy resin, vinyl ester resin, unsaturated polyester resin, polyurethane resin, phenolic resin, etc., and these can also be used in combination. Examples of the thermoplastic resin include acrylic resin, polyester resin, polycarbonate resin, polypropylene resin, polyethylene resin, polystyrene resin, vinyl chloride resin, polyamide resin, etc. These can be used alone or in combination of multiple types.

[0090] In the case of a thermoplastic resin with a low melting point, it may melt due to a high heating temperature. In this case, the resin can be appropriately selected. However, from this point of view, the thermosetting resin has the characteristic of being easier to process than the thermoplastic resin.

[0091] The fibers of the fiber-reinforced resin can be long fibers or short fibers, and as the material, any one of carbon fibers, glass fibers, and metal fibers can be used, or they can be used in combination.

[0092] As the fiber base material in the fiber-reinforced resin, a carbon fiber material with a thickness of 0.03 mm to 0.5 mm is preferred, but it is not limited thereto. Regarding carbon fibers, PAN-based carbon fibers using polyacrylonitrile as a raw material and pitch-based carbon fibers using pitch as a raw material can be used. As the carbon fibers in the prepreg constituting the prepreg 1, carbon fibers are preferred, but it is not limited thereto.

[0093] The spacer can be used by overlapping commercially available prepregs of fiber-reinforced resin, cutting them into a specified shape, and then curing them.

[0094] In addition, the spacer can also be a substrate such as metal or resin, and a composite material obtained by disposing a fiber-reinforced resin around the substrate and then curing it can also be used.

[0095] (Workpiece material)

[0096] The material that can be deep-drawn by the deep-drawing machine of Example 1 (the material of the workpiece material 4) is not particularly limited. In addition to metallic elements such as plate-shaped iron, aluminum, high-strength steel, and titanium, fiber-reinforced composite resins, thermoplastic resins, thermosetting resins, and composite materials of these resins and metals (aluminum, high-strength steel, titanium) can also be cited. Deep drawing can also be performed on materials formed by laminating these materials. In addition, prepregs can be used as the materials for fiber-reinforced composite resins, thermoplastic resins, thermosetting resins, and composite materials. Prepregs are easy to operate, so they are preferred.

[0097] Examples of the fibers of the fiber-reinforced composite resin include glass fibers, carbon fibers, and organic fibers.

[0098] (Manufacturing method of deep drawing product)

[0099] The deep drawing method using the deep drawing machine of Example 1 will be described. In addition, in this embodiment, as the work material 4, a laminate of prepregs of carbon fiber reinforced composite resin (thermosetting resin) is used. First, as shown in Figure 1 (a), the work material 4 is placed above the wrinkle removing plate 3 in such a manner as not to contact the spacer 8. Then, the work material 4 is heated by a heater (not shown) provided inside or outside the second mold 200.

[0100] After the work material 4 is heated to a specified temperature, the second mold 200 and the wrinkle removing plate 3 provided therein are raised until the spacer 8 contacts the first mold 100 (upper mold) (see Figure 2 ). At this time, the work material 4 may contact the first mold 100 together with the spacer 8, or it may be set that the work material 4 does not contact the first mold 100. In order for the work material 4 not to contact the first mold 100, the height of the spacer 8 is made higher than the height of the work material 4. From the viewpoint that the work material 4 can be easily drawn into the cavity 1, it is preferable that the work material 4 does not contact the first mold 100 at this time.

[0101] After the spacer 8 contacts the first mold 100, the second mold 200 having the core 2 is further raised. At this time, the telescopic member 5 contracts, the wrinkle removing plate 3 and the spacer 8 hold this position, and only the second mold 200 (core 2) is further raised to draw the work material 4 between the cavity 1 and the core 2, and the work material 4 is deformed while being further raised (see Figure 3 ).

[0102] When the core 2 enters the cavity 1 and the work material 4 is under pressure, the ascent of the first mold is stopped at a specified position. Heating is continued at the stopped ascending position, and pressure and heating are continued to make it into a desired shape. The time when the second mold 200 is in a stopped state is in the range of 10 seconds to 20 minutes.

[0103] After performing necessary pressure and heating, heating is stopped, and after cooling to a specified temperature, the second mold 200 is lowered to take out the deep drawing product.

[0104] Example 2

[0105] Figure 6 The Example 2 shown is another mode of the present invention. Figure 6 (a) is a side view of the deep drawing machine composed of the first mold having the cavity 1 and the second mold having the core 2 according to Example 2. Figure 6 (b) is Figure 6The first die of (a) is removed together with the work material, and a top view of the main part of the second die is observed from above.

[0106] Example 1 relates to a wrinkle removing plate 3 having a rectangular one surface with a hole for inserting a core 2 at the center. However, in Example 2, the wrinkle removing plate is composed of wrinkle removing plate pieces 31, 32, 33, and 34, and these wrinkle removing plate pieces 31, 32, 33, and 34 are arranged outside the four corners 30 of a substantially rectangular shape (refer to Figure 6 (b)). In addition, the precision machining operation for obtaining the specified production precision of the wrinkle removing plate pieces 31, 32, 33, and 34 is also reduced, and the cost can be reduced as a whole.

[0107] In addition, the effect of the present invention is more easily manifested in the case of a relatively large die. For example, one side (one of the four sides) of the core from corner to corner is preferably 1000 mm or more, more preferably 1500 mm or more, and further preferably 2000 mm or more.

[0108] Even when the wrinkle removing plate is composed of such a plurality of wrinkle removing plate pieces, by providing a spacer 8 above the upper plane of each of the wrinkle removing plate pieces 31, 32, 33, and 34, the work material 4 can be pulled in as easily as in Example 1. In Figure 6 this case, the shape of the spacer 8 is an L shape, but the shape of the spacer 8 is not particularly limited, and a rectangular parallelepiped or a shape obtained by bending a rectangular parallelepiped into a curved shape can also be used.

[0109] Moreover, the core 2 is a substantially rectangular core having a curved upper surface at the corners, but it is not limited to a substantially rectangular shape. The present invention can also be applied to a circular shape, an elliptical shape, etc. In this case, a plurality of wrinkle removing plate pieces (with spacers provided on the wrinkle removing plate pieces) can be provided around the core.

Claims

1. A device for manufacturing a deep-drawn product, characterized in that, A deep-drawn product in which a material to be processed is formed into a desired shape by press molding, and in the press molding, an upper and lower pair of molds composed of a first mold having a cavity and a second mold having a core are used. Among them, The manufacturing apparatus includes: A wrinkle-removing plate disposed around a plane perpendicular to the surface of the core that contacts the material to be processed; and at least one spacer disposed above the wrinkle-removing plate, The spacer is made of a fiber-reinforced resin, the fiber is made of carbon, and the resin is made of an epoxy resin, The material to be processed is a fiber-reinforced composite resin containing at least one resin selected from the group consisting of thermoplastic resins and thermosetting resins, or a composite material of a fiber-reinforced resin containing at least one resin selected from the group consisting of thermoplastic resins and thermosetting resins and a metal selected from aluminum, high-strength steel, and titanium, The spacer is a spacer with extremely small deformation by hot pressing using the mold, making it easy to pull the material to be processed between the core and the cavity.

2. A manufacturing method for manufacturing a deep-drawn product based on a manufacturing apparatus for forming a material to be processed into a deep-drawn product of a desired shape by press molding, and in the press molding, an upper and lower pair of molds composed of a first mold having a cavity and a second mold having a core are used. Among them, The manufacturing apparatus includes: A wrinkle-removing plate disposed around a plane perpendicular to the surface of the core that contacts the material to be processed; and at least one spacer disposed above the wrinkle-removing plate, The manufacturing method includes: A step of disposing the material to be processed above the wrinkle-removing plate; A step of raising the second mold and the wrinkle-removing plate together and bringing the surface of the core that contacts the material to be processed into contact with the material to be processed; A step of further raising the second mold and pressing the material to be processed while pulling the material to be processed between the core and the cavity; and a step of lowering the second mold to obtain a deep-drawn product, The spacer is made of a fiber-reinforced resin, the fiber is made of carbon, and the resin is made of an epoxy resin, The material to be processed is a fiber-reinforced composite resin containing at least one resin selected from the group consisting of thermoplastic resins and thermosetting resins, or a composite material of a fiber-reinforced resin containing at least one resin selected from the group consisting of thermoplastic resins and thermosetting resins and a metal selected from aluminum, high-strength steel, and titanium, The spacer is a spacer with extremely small deformation by hot pressing using the mold, making it easy to pull the material to be processed between the core and the cavity.

3. The manufacturing method according to claim 2, wherein The material to be processed is a laminate.

4. The manufacturing method according to claim 2, wherein, The wrinkle-removing plate is composed of a plurality of wrinkle-removing plate pieces disposed outside the core, and each wrinkle-removing plate piece has a pair of arms extending at a right angle to each other.

5. The manufacturing method according to claim 2, wherein, The thickness of the spacer is the same as or greater than the thickness of the material to be processed.

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