Preform mold and preforming method for sheet

Abstract

The present invention addresses the problem of providing a preform mold for preforming a sheet while suppressing generation of wrinkles even if it is difficult to provide an outer peripheral region. The preform mold for use in preforming and molding a sheet comprises: a punch mold disposed upward in the vertical direction; and a die mold disposed downward in the vertical direction and including a fixed die mold a movable die mold being movable between a first position defining a preform surface continuous with the fixed die mold and a second position that is vertically above the first position, spaced apart from the fixed die mold, and close to the punch mold. The movable die mold is provided with a shim plate protruding outward from a ridge line of an end part. In the first position, the shim plate is disposed along the preform surface. In the second position, a sheet is held between the punch mold and the movable die mold and the shim plate extends along the sheet.

Description

Sheet preforming mold and preforming method

[0001] The present disclosure relates to a mold for preforming a sheet for insert molding and a preforming method.

[0002] In recent years, the need for decorative techniques with a wide range of design expressions and high-quality design has increased due to the diversification of customer preferences in the exterior parts of home appliances, interior parts for automobiles, etc. One of these decorative techniques is the insert molding method, in which decorative material is positioned and fixed in an injection molding mold, and integrated with injected resin.

[0003] By using this insert molding method, it is possible to obtain insert molded products using decorative materials made from sheets, such as thinly sliced ​​veneer made from wood or decorative film printed on a thick substrate.

[0004] On the other hand, in order to obtain insert molded products without defects in appearance, the preforming process of the decorative material, which is a process that precedes insert molding, is important, and in the preforming process, a shaped product of the decorative material must be obtained that is free of wrinkles and resin entrapment after insert molding.

[0005] As shown in FIG. 11, Patent Document 1 describes a method of forming a product by applying pressure to the peripheral region located on the outer edge of the product shape and adjusting the tension, and the effect of this method is to obtain a preformed product that is free of wrinkles and frays.

[0006] JP 2018-192745 A

[0007] Even when shaping a sheet, which is a decorative material, wrinkles may occur during the shaping process depending on the shape of the shaped product. Therefore, in conventional methods, the occurrence of wrinkles is suppressed by applying pressure to the peripheral region located on the outer edge of the product shape or adjusting the tension. However, it is quite difficult to suppress wrinkles during sheet shaping, and the conventional method is not effective, especially when it is not possible to provide a peripheral region due to the shape of the product or the presence or absence of post-molding processes.

[0008] An object of the present disclosure is to provide a preforming mold that can preform a sheet while suppressing the occurrence of wrinkles, even when it is difficult to provide an outer peripheral region.

[0009] The preform mold according to the present disclosure is a preform mold for preforming a sheet, and comprises a die mold including a punch mold arranged vertically above, a fixed die mold arranged vertically below, and a movable die mold movable between a first position defining a preform surface continuous with the fixed die mold, and a second position vertically above the first position and away from the fixed die mold and closer to the punch mold, wherein the movable die mold has a shim plate extending outward from the ridge line of its end, and in the first position the shim plate is arranged along the preform surface, and in the second position it holds the sheet between the punch mold and the movable die mold, with the shim plate extending along the sheet.

[0010] According to the preforming mold according to the present disclosure, even when it is difficult to provide an outer peripheral region in the sheet preforming process, the sheet can be preformed while suppressing the occurrence of wrinkles.

[0011] 1A is a schematic diagram showing a step of producing a sheet as a decorative material, among the steps of an insert molding method using a sheet as a decorative material. FIG. 1B is a schematic perspective view showing a step of preforming the decorated part of FIG. 1B to obtain a shaped part. FIG. 1C is a schematic cross-sectional view showing an insert molding step in which the shaped part obtained in FIG. 1C is held in an insert molding die and resin is injected. FIG. 1D is a schematic cross-sectional view showing an insert-molded part obtained in the insert molding step. FIG. 1D is a plan view showing the sheet before preforming. FIG. 2A is a plan view showing the state of the sheet of FIG. 2A after preforming, including a convexly curved portion. FIG. 3A is a schematic cross-sectional view showing the configuration of a die for preforming a sheet. FIG. 3A is a schematic perspective view showing the positional relationship between a punch die and a die die consisting of a fixed die die and a movable die die in the die for preforming of FIG. 3A. FIG. 3B is a schematic cross-sectional view showing the cross-sectional state of an example of wrinkles in a sheet of a shaped part. FIG. 3C is a schematic cross-sectional view showing the cross-sectional shape of a folded sheet of a shaped part. FIG. 5A is a schematic cross-sectional view showing the configuration of a die for preforming according to embodiment 1. FIG. 5A is a schematic perspective view showing a shim plate provided in the movable die die of FIG. FIG. 1 is a schematic perspective view showing the positional relationship between a punch die and a die die consisting of a fixed die die and a movable die die in a preforming die according to embodiment 1. FIG. 1 is a schematic cross-sectional view showing a state in which the movable die die is in a first position when a shim plate is short. FIG. 1 is a schematic cross-sectional view showing a state in which the movable die die is in a first position when a shim plate is long. FIG. 2 is a schematic cross-sectional view showing the relationship between the side surface and the bottom surface during preforming. FIG. 3 is a schematic cross-sectional view showing the engagement of the punch die and the die die. FIG. 4 is a schematic cross-sectional view showing a difference in the distance between the bottom surface and the side surface in an early stage of engagement of the punch die and the die die. FIG. 5 is a schematic cross-sectional view showing a difference in the distance between the bottom surface and the side surface in a later stage of engagement of the punch die and the die die. FIG. 6 is a schematic cross-sectional view showing how a folded portion of the sheet occurs between the bottom surface and the side surface in an early stage of preforming. FIG. 7 is a schematic cross-sectional view showing how a folded portion of the sheet occurs between the bottom surface and the side surface in a later stage of preforming.9B is a schematic cross-sectional view showing a state in which the folded portion of the sheet between the bottom surface and the side surface does not wrinkle in a later stage of preforming after Fig. 9A. Fig. 9C is a schematic cross-sectional view showing an example of the arrangement of heaters in a preforming mold according to embodiment 2. Fig. 9D is a schematic cross-sectional view showing the configuration of a preforming mold described in Patent Document 1.

[0012] <Background to the present disclosure> Figures 1A to 1E are schematic diagrams showing each step of an insert molding method using a sheet as a decorative material. Figure 1A is a schematic diagram showing a step of producing a sheet as a decorative material, among the steps of an insert molding method using a sheet as a decorative material. Figure 1B is a schematic perspective view showing a step of trimming a decorated part from the sheet of Figure 1A. Figure 1C is a schematic cross-sectional view showing a step of preforming the decorated part of Figure 1B to obtain a shaped part. Figure 1D is a schematic cross-sectional view showing an insert molding step in which the shaped part obtained in Figure 1C is held in an insert molding die and resin is injected. Figure 1E is a schematic cross-sectional view showing a final insert-molded part obtained in the insert molding step of Figure 1D.

[0013] FIG. 2A is a plan view showing the sheet 1 before preforming. FIG. 2B is a plan view showing the sheet 1 of FIG. 2A in a state after preforming, including a convexly curved portion 6. The present disclosure aims to produce a so-called "drawn-out" preform that does not require a process for removing excess material after preforming. Furthermore, as shown in FIG. 2B , the present disclosure aims to suppress the occurrence of wrinkles in a shape including a curved portion in which the convex shape of the curved portion 6, which is the result of the preformed straight portion being deformed into a convex shape, faces the movable die when viewed from above vertically, and both edges of the convex shape extend away from the movable die. In other words, when the convex direction of the punch die of the preforming die is the negative direction of the Z axis, the objective is to obtain a shape in which the preformed shaped product curves inward from the outside toward the center without wrinkles when viewed from the positive side to the negative side of the Z axis (i.e., when viewed vertically from above).

[0014] Fig. 3A is a schematic cross-sectional view showing the configuration of a sheet preforming die. Fig. 3B is a schematic perspective view showing the positional relationship between the punch die 2 and the die die consisting of the fixed die 3 and the movable die 5 in the preforming die of Fig. 3A. The shape of the target shaped product corresponds to a curved shape having a bottom surface and wall surfaces of the punch die 2 when viewed from the Y-axis side of Fig. 3A, where the bottom surface and the wall surfaces are connected by an R-shape (R-bottom). Also, as shown in Fig. 3B, the outer edge of the punch die 2 in the longitudinal direction (Y direction) has a saddle-like shape that is thin in the center and thick at both ends. The shape of the shaped product also corresponds to the saddle-like shape of the punch die 2.

[0015] The operation of the preforming method will be described using Figures 3A and 3B. A typical sheet metal press process uses a punch, a die plate, a wrinkle suppressor, and a movable die for shaping the sheet metal or for discharging the shaped product. In Figure 3A, a punch 2, a die plate (fixed die) 3, a wrinkle suppressor 4, and a movable die 5 are used to shape the sheet 1. The difference from a typical sheet metal press is that the movable die 5 is used to suppress misalignment of the sheet 1 during preforming. The movable die 5 is not limited to suppressing misalignment, and may also be used for shaping or discharging the product. (1) First, the trimmed sheet 1 is set on the die plate (fixed die) 3. (2) Next, the wrinkle suppressor 4 and the punch 2 are driven in the negative direction of the Z axis. At this time, the wrinkle suppressor 4 first comes into contact with the sheet 1. (3) Next, only the punch 2 is driven in the negative direction of the Z axis to the bottom dead center.

[0016] FIG. 7A is a schematic cross-sectional view showing the meshing of the punch 2 and the die 3. FIG. 7B is a schematic cross-sectional view showing the difference in the gap between the bottom and side surfaces of the punch 2 and the die 3 in the early stage of meshing. FIG. 7C is a schematic cross-sectional view showing the difference in the gap between the bottom and side surfaces of the punch 2 and the die 3 in the later stage of meshing. As shown in FIG. 7A, when the punch 2 and the die 3 mesh, the gap is the thickness of the shaped product, and normally the gap between the bottom and side surfaces is substantially the same. However, as shown in FIG. 7B, in the early stage of meshing of the punch 2 and the die 3, although the gap between the bottom surfaces is sufficient, the gap between the side surfaces suddenly narrows. As shown in FIG. 7C, in the later stage of meshing of the punch 2 and the die 3, the gap between the bottom surfaces also narrows.

[0017] 8A is a schematic cross-sectional view showing how folded portions 12 of the sheet occur between the bottom surface and the side surface in the early stages of preforming. FIG. 8B is a schematic cross-sectional view showing how folded portions 12 of the sheet between the bottom surface and the side surface become wrinkles 14 in the later stages of preforming. As shown in FIG. 8A, folds 12 of the sheet occur at the side surface that narrows first in FIG. 7B, and as shown in FIG. 8B, folds 12 become wrinkles 14 at the bottom dead center. Generally, when preforming into the above shape, the sheet 1 is released from the wrinkle holder 4 during the process, so tension cannot be applied to the sheet 1 until the end. As soon as the wrinkle holder 4 is released, folds 12 begin to occur at the side surface. The folds 12 gather, and wrinkles 14 are formed along the ridge of the movable die 5 when the punch 2 reaches the bottom dead center.

[0018] Fig. 4A is a schematic cross-sectional view showing an example of a wrinkle 14 in a sheet of a shaped product. Fig. 4B is a schematic cross-sectional view showing a cross-sectional shape of a fold 12 in a sheet of a shaped product. As shown in Fig. 4A, when the folding angle of the sheet is less than 90°, the folding becomes deep, resulting in wrinkles 14 that do not recover even after insert molding. On the other hand, the inventors have found that when the folding angle of the sheet is 90° or more, as shown in Fig. 4B, the sheet is able to recover during insert molding, and therefore wrinkles are less likely to occur.

[0019] 9A is a schematic cross-sectional view showing how a folded portion of the sheet occurs between the bottom surface and the side surface in the early stage of preforming using a preforming mold having a shim plate 7 provided on the movable die 5. FIG. 9B is a schematic cross-sectional view showing how the folded portion of the sheet between the bottom surface and the side surface does not wrinkle in the later stage of preforming after FIG. 9A. As described above, the present inventors have thoroughly investigated the cause of the overlapping of the folded portions of the sheet that occurs between the bottom surface and the side surface in the early stage of preforming, resulting in a folding angle of less than 90°. As a result, it was found that, in the past, when the spacing between the side surfaces narrowed first and a folding occurred, the folding moved toward the bottom surface, where there was still room, and when the bottom surface also narrowed at the bottom dead center, multiple folds overlapped and were crushed by the ridges of the movable die 5, resulting in wrinkles at an angle of less than 90° between the sheets.

[0020] Therefore, the inventors discovered that by providing a shim plate 7 that protrudes outward from the ridgeline at the end of the movable die 5 as shown in Fig. 9A, it is possible to prevent folds 12 in the sheet 1 from moving toward the bottom when folding occurs on the side, leading to the present disclosure. As a result, as shown in Fig. 9B, by forcibly narrowing the clearance on the bottom side with the shim plate 7, folds 12 in the sheet 1 occur on the side, but the moving folds can be prevented from penetrating toward the bottom. Furthermore, wrinkles in the sheet where the angle between the sheets is greater than 90° before being crushed are stretched again within the die, thereby preventing the formation of wrinkles.

[0021] Each aspect of the present disclosure will be described below.

[0022] The preform mold of the first aspect is a preform mold for preforming a sheet, and comprises a die mold including a punch mold arranged vertically above, a fixed die mold arranged vertically below, and a movable die mold that is movable between a first position that defines a preform surface that is continuous with the fixed die mold, and a second position that is vertically above the first position and away from the fixed die mold and closer to the punch mold, wherein the movable die mold has a shim plate that protrudes outward from the ridge line of its end, and in the first position the shim plate is arranged along the preform surface, and in the second position it holds the sheet between the punch mold and the movable die mold, and the shim plate extends along the sheet.

[0023] A preform mold according to a second aspect may be the same as the first aspect, wherein the movable die mold is movable from the second position to the first position during preform molding.

[0024] A preform mold according to a third aspect is the preform mold according to the first aspect, wherein the punch mold or the die mold may be provided with a heater.

[0025] A preform mold according to a fourth aspect is the preform mold according to the third aspect, wherein the punch mold or the die mold may be provided with a cooling circuit.

[0026] In the preform mold of the fifth aspect, in the first aspect described above, the preform surface defined by the fixed die mold and the movable die mold may include a curved portion in which, when viewed from above vertically, the straight portion before deformation is deformed into a convex shape, the convex shape of the curved portion faces toward the movable die mold, and the edges on both sides of the convex shape extend away from the movable die mold.

[0027] The preforming method of the sixth aspect is a sheet preforming method using the preforming mold of the first aspect, and includes the steps of moving the movable die mold to a second position and placing the sheet on the movable die mold, moving the punch mold vertically downward and holding the sheet between the punch mold and the movable die mold, moving the punch mold further vertically downward while holding the sheet between the punch mold and the movable die mold, moving the movable die mold from the second position to the first position, and shaping the sheet into a shaped product, and moving the punch mold vertically upward while holding the movable die mold at the first position, and removing the shaped product.

[0028] Hereinafter, a preforming mold according to an embodiment and a preforming method using the mold will be described with reference to the accompanying drawings. In the following description, the same components are given the same reference numerals, and duplicate explanations may be omitted. The drawings mainly show each component as a schematic representation for ease of understanding. Furthermore, the thickness, length, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Note that the present invention is not limited to the following embodiments.

[0029] (Embodiment 1) Fig. 5A is a schematic cross-sectional view showing the configuration of a preforming mold 10 according to embodiment 1. Fig. 5B is a schematic perspective view showing a shim plate 7 provided in the movable die 5 of Fig. 5A. Fig. 5C is a schematic perspective view showing the positional relationship between the punch 2 and the die consisting of the fixed die 3 and the movable die 5 in the preforming mold according to embodiment 1. The preforming mold 10 according to embodiment 1 is a preforming mold for preforming a sheet 1. This preforming mold 10 includes the punch 2 arranged vertically above and the die arranged vertically below. The die includes the fixed die 3 and the movable die 5 that defines a preforming surface continuous with the fixed die 3. The movable die 5 is movable between a first position and a second position that is vertically above the first position, away from the fixed die 3, and closer to the punch 2. The movable die 5 also has a shim plate 7 that protrudes outward from the ridge line at its end. In the first position, the movable die 5 defines a preform surface that is continuous with the fixed die 3. Also, in the first position, the shim plate 7 is arranged along the preform surface, and in the second position, the movable die 5 holds the sheet 1 between the punch 2 and the movable die 5, and the shim plate 7 extends along the sheet 1.

[0030] <Sheet> The material of the sheet 1 may be a raw material such as nylon, polypropylene, or polyethylene-based fibers, or a combination of different raw materials. The sheet 1 may be a cloth or a plate. Alternatively, a laminate, such as a nonwoven fabric, may be used. The sheet 1 of the first embodiment uses a laminate, with a nonwoven fabric on the side that comes into contact with the resin during insert molding. This not only increases the adhesive strength with the resin during insert molding, but also increases the temperature of the preform mold, thereby improving the shapeability during preforming. The shaped shape may be, for example, a shape in which, when viewed vertically from above, the curved portion 6, which is the result of the pre-deformed straight portion being deformed into a convex shape, faces the movable die mold, and includes curved portions where both edges of the convex shape extend away from the movable die mold. In other words, if the convex direction of the punch mold of the preform mold is the negative direction of the Z axis, when the shaped product after preforming is viewed from the positive side to the negative side of the Z axis (i.e., when viewed vertically from above), the shaped product has a shape that curves inward from the outside toward the center.

[0031] <Shim Plate> FIG. 5D is a schematic cross-sectional view showing the movable die 5 in the first position when the shim plate 7 is short. FIG. 5E is a schematic cross-sectional view showing the movable die 5 in the first position when the shim plate 7a is long. As shown in FIGS. 5A to 5C , the shim plate 7 is provided along the ridge of the movable die 5 and protrudes outward from the ridge. The same effect can be achieved using a resin material with a Young's modulus of 1000 MPa or more. However, in this embodiment, stainless steel may be used for durability and ease of attachment to the movable die 5. The protrusion of the shim plate 7 may be short, for example, 0.1 mm, as shown in FIG. 5D . Alternatively, the protrusion may be long, extending beyond the R-end of the shaped product shape and extending just before the end of the R-shape of the shaped product shape, as shown in FIG. 5E . The end of the shim plate 7 may be edge-shaped or rounded. In this embodiment, an edge-shaped shim plate 7 is used. The thickness of the shim plate 7 may be set to be less than half the thickness of the sheet 1. For example, the thickness of the sheet 1 is 1.7 mm, the clearance between the punch 2 and the fixed die 3 of the mold is designed to be 1.6 mm, and the thickness of the shim plate 7, which is effective in this embodiment, may be between 0.4 mm and 0.6 mm.

[0032] <Preforming Method> (1) First, the trimmed sheet 1 is set in the fixed die 3. At this time, the movable die 5 is protruded in the positive direction of the Z axis and is positioned at the same position as the sheet 1 set surface of the fixed die 3. The surface shape of the movable die 5 is preferably set to a portion of the bottom surface that has as flat a surface as possible within the overall shape, but depending on the shape, it may be a three-dimensional shape. If the surface shape of the movable die 5 is three-dimensional, the part with the greatest convexity should be positioned at the same position as the sheet 1 set surface of the fixed die 3. Furthermore, while the size of the movable die 5 is not limited, in this embodiment, it is set to the longest design length in the Y-axis direction in Figure 5A and to the end of the R shape in the X-axis direction. (2) Next, the wrinkle holder 4 and the punch 2 are driven in the negative direction of the Z axis. At this time, the wrinkle holder 4 is brought into contact with the sheet 1 first. (3) Next, only the punch 2 is driven in the negative direction of the Z axis to the bottom dead center. At this time, the movable die 5 is set to a state in which a force is applied in the positive direction of the Z axis, so that the force of the movable die 5 is not applied until the punch 2 reaches the bottom dead center and is driven again after shaping is completed. In this embodiment, an air cylinder is used to drive the movable die 5, but a hydraulic cylinder or the like may also be used, as long as the relationship of pressure of the movable die 5 < pressure of the punch 2 is maintained. The pressure of the punch 2 is set to 5 MPa, but this is not limited to this depending on the shaping properties, and the pressure can be increased or decreased while monitoring the shaping properties. (4) Then, the punch 2 is moved vertically upward to remove the shaped product. At this time, the movable die 5 may be held in the first position, or it may be moved vertically upward to the second position. Furthermore, when preforming for insert molding, the clearance between the punch 2 and the fixed die 3 is designed so that the thickness of the final shaped product is thinner than the thickness of the sheet 1 to be preformed.

[0033] According to the preform mold 10 of embodiment 1, when viewed from above vertically, the occurrence of wrinkles can be suppressed for a shape including a curved portion in which the convex shape of the curved portion 6, which is the result of the pre-deformation straight portion being deformed into a convex shape, faces the movable die mold and the edges on both sides of the convex shape extend away from the movable die mold.

[0034] According to the preform mold 10 of the first embodiment, as shown in Fig. 9A, by providing a shim plate 7 that protrudes outward from the ridge line at the end of the movable die 5, it is possible to prevent the folds 12 of the sheet 1 from moving toward the bottom when folding occurs on the side. As a result, as shown in Fig. 9B, by forcibly narrowing the clearance on the bottom side with the shim plate 7, folding 12 of the sheet 1 occurs on the side, but it is possible to prevent the approaching folds from penetrating toward the bottom. Furthermore, wrinkles that form an angle of more than 90° between the sheets before being crushed are stretched again within the mold, thereby preventing the formation of wrinkles.

[0035] (Embodiment 2) FIG. 10 is a schematic cross-sectional view showing an example of the arrangement of heaters 16a and 16b in a preform mold 10a according to Embodiment 2. Compared to the preform mold according to Embodiment 1, the preform mold 10a according to Embodiment 2 differs in that heaters 16a and 16b are provided. Note that, while FIG. 10 shows heater 16a provided on punch 2 and heater 16b provided on fixed die 3, this is not limited to this. For example, a heater may be provided on only one of punch 2 or fixed die 3. A heater may also be provided on movable die 5. Furthermore, although not shown, a cooling circuit may also be provided in the preform mold. This reduces the temperature of the preform mold when punch 2 reaches bottom dead center, thereby further improving shapeability. The nonwoven fabric used in Embodiment 2 has a melting point of, for example, 70°C, and the most effective temperature setting for the preform mold is between 70°C and 90°C. However, depending on the type of nonwoven fabric, the temperature setting for the preform mold may not be limited to this.

[0036] Insert molded products obtained using the preform mold according to the present disclosure can suppress the occurrence of wrinkles, contributing to higher functionality and design in fields requiring decoration, such as the exteriors of various household electrical appliances and automotive interiors.

[0037] REFERENCE SIGNS LIST 1 Sheet 2 Punch die 3 Die plate (fixed die die) 4 Wrinkle suppressor 5 Movable die die 6 Curved portion 7, 7a Shim plate 10 Preform die 12 Fold 14 Wrinkle 16a, 16b Heater 101 Fiber substrate in Patent Document 1 102 Convex die in Patent Document 1 103 Concave die in Patent Document 1 104 Wrinkle suppressor in Patent Document 1

Claims

1. A preforming mold for preforming a sheet, comprising: a punch mold arranged vertically above; and a die mold arranged vertically below, the die mold including a fixed die mold and a movable die mold, wherein the movable die mold is movable between a first position defining a preforming surface continuous with the fixed die mold, and a second position vertically above the first position, away from the fixed die mold and closer to the punch mold, and the movable die mold has a shim plate extending outward from a ridge line at its end, and at the first position, the shim plate is arranged along the preforming surface, and at the second position, the sheet is held between the punch mold and the movable die mold, and the shim plate extends along the sheet.

2. The preform mold according to claim 1, wherein said movable die mold is movable from said second position to said first position during preform molding.

3. The preform mold according to claim 1, wherein the punch mold or the die mold is provided with a heater.

4. A preform mold according to claim 3, wherein the punch mold or the die mold is provided with a cooling circuit.

5. A preform mold as described in claim 1, wherein the preform surface defined by the fixed die mold and the movable die mold includes, when viewed from above vertically, a curved portion formed by deforming a straight portion before deformation into a convex shape, the convex shape of which faces the movable die mold, and the edges on both sides of the convex shape extend away from the movable die mold.

6. A method for preforming a sheet using a preforming mold as claimed in claim 1, comprising the steps of: moving the movable die mold to the second position and placing a sheet on the movable die mold; moving the punch mold vertically downward and holding the sheet between the punch mold and the movable die mold; moving the punch mold further vertically downward while the sheet is held between the punch mold and the movable die mold, and moving the movable die mold from the second position to the first position to shape the sheet into a shaped product; and moving the punch mold vertically upward while holding the movable die mold at the first position and removing the shaped product.

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