Laminate manufacturing apparatus and laminate manufacturing method

Abstract

An apparatus for manufacturing a laminate according to the present disclosure comprises: a supply mechanism for supplying a sheet-like metal sheet including a metal sheet in which an adhesive is applied to a portion of at least one surface; and a ring-shaped pressing member having a conveyance path on which the metal sheets supplied from the supply mechanism are sequentially stacked and conveyed, the pressing member including: a first side pressure applying region located at an end portion on an upstream side in a conveyance direction of the metal sheets, a pressing means for pressing and supporting at least a portion of the side surface of the metal sheet supplied from the supply means by a predetermined pressure; a second side pressure applying region located at an end portion on the downstream side in the conveyance direction, the second side pressure applying region pressing and supporting at least a portion of a side surface of the metal sheet conveyed in the press at a predetermined pressure; and an intermediate region which is located between the first side pressure applying region and the second side pressure applying region in the conveying direction and forms a gap with the metal sheet conveyed in the extrusion member.

Description

Technical Field

[0001] The present disclosure relates to a manufacturing device for a laminated body and a manufacturing method for a laminated body. Background Art

[0002] In order to obtain a motor core (specifically, a rotor core or a stator core) used in a rotating electric machine, for example, a motor mounted in an electric vehicle, a laminated body is manufactured by laminating a plurality of thin plate-shaped metal sheets that are punched out. In addition, as such a laminated body, a laminated body formed by bonding metal sheets to each other with an adhesive is known (for example, refer to Japanese Patent Application Publication No. 2005-132003).

[0003] Japanese Patent Application Publication No. 2005-132003 describes that: a metal sheet is punched out from a thin plate coated with an adhesive using a punch and a die, the punched metal sheets are stacked, and a guide is used to apply pressure from the sides, thereby holding the metal sheets in the guide and arranging and moving the metal sheets. In addition, Japanese Patent Application Publication No. 2005-132003 also describes that: heating is performed while arranging and moving the metal sheets in the guide, thereby melting the applied adhesive and bonding the metal sheets. Summary of the invention

[0004] Problems to be solved by the invention

[0005] When the metal sheets constituting the stacked body are to be bonded to each other, it is necessary to press with a prescribed force along the stacking direction of the metal sheets so that the bonding surfaces can be reliably abutted. As in the stacked body of Japanese Patent Publication No. 2005-132003, when the metal sheets are stacked in sequence and arranged and moved and bonded, it is better to press along the stacking direction of the metal sheets by using a punch to press the metal sheets into the guide with a relatively large pressure. However, the guide recorded in Japanese Patent Publication No. 2005-132003 presses the lateral surroundings of all the arranged and moved multiple metal sheets (hereinafter, the pressurization is also referred to as "imparting lateral pressure") to support the multiple metal sheets. Therefore, the load in the stacking direction imparted by the punch is distributedly imparted to all the arranged and moved multiple metal sheets through the guide. In this case, the load in the stacking direction imparted to a metal sheet, especially a metal sheet before or during bonding, is difficult to increase, which may cause poor bonding between the metal sheets.

[0006] The present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide an apparatus for manufacturing a laminated body and a method for manufacturing a laminated body in which adhesion failure of metal sheets is suppressed.

[0007] Solutions for solving problems

[0008] In order to achieve the above-mentioned purpose, the manufacturing device of the stacked body of the first scheme of the present invention includes: a supply mechanism, which supplies a thin plate-shaped metal sheet, which includes a metal sheet coated with an adhesive on a portion of at least one surface; and an extrusion, which has a conveying path for the metal sheets supplied from the supply mechanism to be stacked and conveyed in sequence, and the extrusion includes: a first side pressure applying area, located at the end on the upstream side of the conveying direction of the metal sheet, pressing and supporting at least a portion of the side surface of the metal sheet supplied from the supply mechanism with a specified pressure; a second side pressure applying area, located at the end on the downstream side of the conveying direction, pressing and supporting at least a portion of the side surface of the metal sheet conveyed in the extrusion with a specified pressure; and an intermediate area, located between the first side pressure applying area and the second side pressure applying area in the conveying direction, forming a gap between the metal sheet conveyed in the extrusion.

[0009] In the above-mentioned manufacturing device for a laminated body, by providing the extruder with an intermediate region that does not apply lateral pressure to the metal sheets, the load in the stacking direction applied to the metal sheets conveyed in the conveying path can be increased, thereby making the metal sheets closely attached to each other and preventing poor adhesion.

[0010] For the manufacturing device of the stacked body of the second scheme of the present disclosure, in the manufacturing device of the stacked body of the first scheme of the present disclosure, it also includes a back pressure device, which supports the metal sheet in a manner of pressing the metal sheet transported in the conveying path from the downstream side of the conveying direction toward the upstream side of the conveying direction.

[0011] In the above-described apparatus for manufacturing a stacked body, since the back pressure device can always apply a load in the stacking direction to the metal sheet conveyed in the conveying path, it is easy to maintain the close contact state of the metal sheet.

[0012] For the manufacturing device of the stacked body of the third scheme of the present disclosure, in the manufacturing device of the stacked body of the first scheme or the second scheme of the present disclosure, the supply mechanism has a punching mechanism, and the punching mechanism has a punch and a die for punching out the metal sheet of a specified shape from a strip-shaped thin plate, and the die is connected to the end of the extrusion part on the upstream side of the conveying direction.

[0013] In the above-described laminated body manufacturing apparatus, punching and bonding of metal sheets can be continuously performed.

[0014] For the manufacturing device of the stacked body of the fourth scheme of the present disclosure, in the manufacturing device of the stacked body of the first scheme or the second scheme of the present disclosure, the supply mechanism includes: a metal sheet conveying path for conveying the metal sheet; a press for pressing the metal sheet conveyed on the metal sheet conveying path toward the end on the upstream side of the conveying direction of the extrusion; and an adhesive coating device for coating adhesive on at least a portion of at least a portion of at least one surface of the metal sheet conveyed on the metal sheet conveying path.

[0015] In the above-described apparatus for manufacturing a laminated body, metal sheets punched out by a conventional punching device can be bonded together to form a laminated body.

[0016] A method for manufacturing a laminated body according to a fifth aspect of the present disclosure includes the following steps: supplying a thin plate-shaped metal sheet to an end portion on the upstream side of an extrusion having a conveying path for sequentially stacking and conveying the metal sheets, wherein the metal sheet includes a metal sheet coated with an adhesive on a portion of at least one surface, the extrusion including a first side pressure imparting region, a second side pressure imparting region, and an intermediate region, the first side pressure imparting region being located at the end portion on the upstream side of the conveying direction and pressing and supporting at least a portion of a side surface of the metal sheet with a predetermined pressure, the second side pressure imparting region being located at the end portion on the downstream side of the conveying direction and pressing and supporting at least a portion of a side surface of the metal sheet conveyed in the extrusion with a predetermined pressure, the intermediate region being located between the first side pressure imparting region and the second side pressure imparting region in the conveying direction, and a gap being formed between the intermediate region and the metal sheet conveyed in the extrusion; stacking and bonding the metal sheets in the conveying path and conveying them in the conveying direction; and outputting a laminated body formed by bonding a plurality of the metal sheets from the end portion on the downstream side of the extrusion in the conveying direction.

[0017] In the method for manufacturing a laminated body as described above, an extrusion member including a middle region that does not apply lateral pressure to the metal sheets is used to manufacture the laminated body, thereby applying a large load in the stacking direction of the metal sheets when the metal sheets are conveyed in the extrusion member. As a result, the metal sheets can be closely attached to each other, and poor adhesion can be suppressed.

[0018] Effects of the Invention

[0019] According to the manufacturing apparatus and method of a laminated body disclosed herein, poor adhesion of metal sheets can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic explanatory diagram showing an example of an apparatus for producing a laminated body according to an embodiment of the present disclosure.

[0021] Figure 2It is shown in an enlarged manner Figure 1 An enlarged view of the extrusion part of the laminate manufacturing apparatus.

[0022] Figure 3 So Figure 1 Cross-sectional view when cutting along line A-A.

[0023] Figure 4 So Figure 1 Cross-sectional view when cutting along the B-B line.

[0024] Figure 5A It is an operation explanation diagram when implementing an example of the method for producing a laminated body according to one embodiment of the present disclosure.

[0025] Figure 5B It is an operation explanation diagram when implementing an example of the method for producing a laminated body according to one embodiment of the present disclosure.

[0026] Figure 5C It is an operation explanation diagram when implementing an example of the method for producing a laminated body according to one embodiment of the present disclosure.

[0027] Figure 6 This is a schematic explanatory diagram showing an example of an apparatus for producing a laminated body according to a modified example of the present disclosure. DETAILED DESCRIPTION

[0028] This application is based on Japanese Patent Application No. 2022-164918 filed in Japan on October 13, 2022, and the contents thereof constitute a part of this application as the contents of this application.

[0029] In addition, the disclosure should be more fully understood through the following detailed description. Through the following detailed description, the further application scope of the present application will become apparent. However, the detailed description and specific examples are ideal embodiments of the present disclosure and are recorded only for the purpose of illustration. This is because, according to the detailed description, various changes and modifications are apparent to those skilled in the art within the spirit and scope of the present disclosure.

[0030] The applicant does not intend to dedicate any of the described embodiments to the public, and disclosed changes and alternatives that may not be literally included in the claims are also intended to be part of the invention under the doctrine of equivalents.

[0031] Hereinafter, various embodiments for implementing the present disclosure will be described with reference to the accompanying drawings. It should be noted that, below, the scope required for the description to achieve the purpose of the present disclosure is schematically shown, and the scope required for the description of the corresponding part of the present disclosure is mainly described, and the part omitted from the description is set as the content based on the known technology. In addition, the same or similar reference numerals are marked for the components that are identical or equivalent to each other in the figures, and repeated descriptions are omitted. Moreover, in the case of including components that are identical or equivalent to each other in multiple figures, in order to facilitate the understanding of the drawings, sometimes only some of the components are marked with reference numerals.

[0032] <Laminate manufacturing apparatus>

[0033] Figure 1 This is a schematic diagram showing an example of a manufacturing apparatus for a laminated body according to an embodiment of the present disclosure. Figure 1 In order to facilitate understanding of the structure, a portion of the manufacturing device 1 for the laminated body (specifically, mainly the extrusion part 20 and the die 12) is shown in cross section. Figure 1 As shown, the manufacturing device 1 of the laminated body of the present embodiment includes a punching mechanism 10 as an example of a supply mechanism for supplying metal sheets 2 and an extruder 20 for sequentially stacking and conveying the metal sheets 2 supplied from the punching mechanism 10. Figure 1 The direction indicated by the arrow X shown in the figure is the left-right direction. Similarly, the following description will be given with the direction indicated by the arrow Y as the front-back direction and the direction indicated by the arrow Z as the up-down direction.

[0034] The laminate 3 manufactured by the laminate manufacturing device 1 of the present embodiment is a laminate generated by laminating a plurality of metal sheets 2. The laminate 3 may also constitute at least a part of the core, more specifically, the stator core and the rotor core of a rotating electrical machine such as a motor or a generator. The stator core and the rotor core mentioned here may include both split cores and non-split cores. It should be noted that in the following description, as a laminate, a part of the stator core constituting an inner rotor type motor is shown as an example, but it is not limited to this.

[0035] The punching mechanism 10 can be used to punch out a metal sheet 2 of a specified shape from a thin strip-shaped metal plate 4. Figure 1 As shown, the punching mechanism 10 may be configured to include at least a punch (also called “punch”) 11 and a die 12 .

[0036] The metal sheet 2 punched out by the punching mechanism 10 may be a part of a laminated body constituting a stator core, and may be a substantially disc-shaped member including an annular yoke and a tooth portion protruding inwardly from the inner circumference of the yoke and having a substantially T-shaped tooth shape in a plan view (see FIG. Figure 3 andFigure 4 ). The material of the metal sheet 2 can be an electromagnetic steel plate.

[0037] In addition, for some of the metal sheets 2, an adhesive G is applied to a portion or the entire surface of at least one surface (specifically, the upper surface and / or the lower surface) (see Figure 2 ) is preferred. Various adhesives may be used as the adhesive G applied to the metal sheet 2, for example, anaerobic adhesives, moisture-curing adhesives, thermosetting adhesives, ultraviolet-curing adhesives, or two-liquid mixed curing adhesives, etc. It should be noted that when using a thermosetting adhesive or an ultraviolet-curing adhesive, it is preferred to provide a heat source or a light source around the upper end 20A of the extrusion 20. In the present embodiment, an anaerobic adhesive is used as the adhesive G. In addition, the adhesive G may not be applied to the metal sheet 2 at the end of the stack 3, which is supplied to the extrusion 20.

[0038] The punch 11 may be a substantially columnar or cylindrical member disposed on the upper portion of the metal sheet 4 conveyed in the left-right direction and capable of punching out a metal sheet 2 of a predetermined shape by moving up and down toward the punch die 12. The base end of the punch 11 may be fixed to the upper die 13. In addition, the upper die 13 may be connected to a slide 14 capable of moving in the up-down direction, and may be an upper die capable of moving the punch 11 in the up-down direction by operating the slide 14.

[0039] A stripper 15 may be provided around the punch 11, and the stripper 15 is used to remove the metal plate 4 bitten into the punch 11 when the punch 11 is lowered to punch the metal plate 4. The stripper 15 may be mounted on the slide 14 so as to move up and down together with the punch 11, and when the top end of the punch 11 is inserted into the die 12, the stripper 15 can abut against the upper surface of the metal plate 4 to support the metal plate 4. In addition, a driving source (not shown) such as a motor-driven crank mechanism may be connected to the slide 14.

[0040] exist Figure 1 In the figure, as the punch 11, only a punch for punching the metal sheet 2 from the metal plate 4 is shown as an example, but the number of the punches 11 is not limited to one. Specifically, one or more other punches may be arranged on the upstream side of the conveying direction of the metal plate 4 than the position where the punch 11 is arranged, and the other punches perform pre-punching for punching the metal sheet 2 by the punch 11. The other punches may be fixed to the upper die 13 in the same manner as the punch 11, and may move up and down together with the punch 11.

[0041] The die 12 can be arranged opposite to the punch 11 with the metal plate 4 interposed therebetween, and is composed of an annular member including a hole into which the top end of the punch 11 can be inserted after it is lowered. The die 12 mainly has the function of forming the punched metal sheet 2. The die 12 can be fixed to the lower die 16. And, the lower die 16 can be connected to the die base 17. It should be noted that the number and configuration of the dies 12 should be adjusted to match the number and configuration of the punches 11. In addition, the die base 17 may be fixed to a housing (not shown) of the punching mechanism 10, and the movement of the die base 17 is not restricted.

[0042] Figure 2 It is shown in an enlarged manner Figure 1 An enlarged view of the extrusion part of the laminate manufacturing device. In addition, Figure 3 So Figure 1 A cross-sectional view of the A-A line. Figure 4 So Figure 1 The cross-sectional view of the B-B line. Figure 2 In, also with Figure 1 Likewise, the extrusion 20 and the die 12 portions are shown primarily in cross-section. Figure 2 In order to facilitate understanding that the metal sheets 2 conveyed in the extrusion 20 constitute a plurality of stacked bodies 3, gaps are illustrated between the stacked bodies 3, and a layer of adhesive G is illustrated between the bonding surfaces of the metal sheets 2. However, it should be noted that, in reality, such gaps are not formed between the metal sheets 2 conveyed in the extrusion 20, and the layer of adhesive G is usually much thinner than the layer of adhesive G illustrated.

[0043] In addition, Figure 1 and Figure 2 In order to facilitate understanding, the number of metal sheets 2 conveyed in the extrusion 20 is relatively small, but the metal sheets 2 conveyed in the extrusion 20 may be tens to hundreds of units. In addition, the total number of metal sheets 2 constituting the laminated body 3 may also be tens to hundreds of units. As a result, in most cases, about 2 to 5 laminated bodies 3 (already bonded or in the process of being bonded) are conveyed in the extrusion 20.

[0044] like Figures 2 to 4As shown, the extrusion 20 has a conveying path for stacking and conveying the metal sheets 2 punched and formed by the punching mechanism 10 and extruded below the die 12 in sequence. The extrusion 20 can be composed of a ring-shaped member having a through hole 21 in the central part, or more specifically, a roughly cylindrical member having a predetermined length in the up and down direction, and the extrusion 20 can be assembled to the die base 17 in a state where one end of the extrusion 20 is connected to the die 12. The through hole 21 can function as an example of a conveying path for stacking and conveying the metal sheets 2 from the top to the bottom. It should be noted that in this embodiment, an example is shown in which a roughly cylindrical member is used as the extrusion 20, but the shape of the extrusion 20 can be appropriately changed to match the shape of the metal sheet 2 to be conveyed. For example, arc-shaped members can be combined in the circumferential direction to make the extrusion 20 cylindrical.

[0045] like Figure 2 As shown, the extrusion 20 includes three different regions along the conveying direction (i.e., the up-down direction) of the metal sheet 2. Specifically, it includes: a first side pressure imparting region 22 formed on the upper end 20A side; a second side pressure imparting region 23 formed on the lower end 20B side; and a middle region 24 formed in the middle of the conveying direction of the extrusion 20.

[0046] like Figure 2 and Figure 3 As shown, the first side pressure imparting area 22 is located at the upper end 20A, and the upper end 20A is located on the upstream side of the conveying direction of the metal sheet 2. The first side pressure imparting area 22 presses and supports the side surface of the metal sheet 2 supplied from the punching mechanism 10 with a predetermined pressure. It is preferable that an abutment portion 25 for abutting against at least a portion of the lateral periphery of the conveyed metal sheet 2 and imparting side pressure to the metal sheet 2 is formed on the inner circumferential surface of the first side pressure imparting area 22. In the present embodiment, the abutment portion 25 is formed on the entire circumference of the inner circumferential surface of the first side pressure imparting area 22, and its inner diameter can be set to be slightly smaller than the outer diameter of the metal sheet 2. As a result, the metal sheet 2 pressed into the first side pressure imparting area 22 from the upper end 20A by the punch 11 is abutted and supported by the abutment portion 25. It should be noted that in this embodiment, the example is shown that the contact portion 25 is formed on the entire circumference of the inner circumference of the first lateral pressure applying region 22 to apply lateral pressure to the entire circumference of the side surface of the metal sheet 2 passing therethrough, but the shape of the contact portion 25 is not limited thereto. Specifically, the contact portion 25 only needs to be formed to hold the edge of the metal sheet 2, and may apply lateral pressure to only a portion of the side surface of the metal sheet 2.

[0047] The second lateral pressure imparting region 23 is located at the lower end portion 20B, which is located at the downstream side in the conveying direction, and the second lateral pressure imparting region 23 presses and supports the side surface of the metal sheet 2 conveyed in the extrusion member 20 with a predetermined pressure. The second lateral pressure imparting region 23 may have an abutment portion 25 on its inner peripheral surface in the same manner as the first lateral pressure imparting region 22 described above. The abutment portion 25 of the second lateral pressure imparting region 23 can impart lateral pressure to the lateral periphery (in other words, the outer peripheral surface) of the metal sheet 2 passing through the second lateral pressure imparting region 23, and the metal sheet 2 is supported by the second lateral pressure imparting region 23 through the lateral pressure. The second lateral pressure imparting region 23 can be said to be a region for supporting the stacked body 3 formed by bonding a plurality of metal sheets 2 for a certain period of time.

[0048] like Figure 2 and Figure 4 As shown, the middle area 24 is located between the first side pressure imparting area 22 and the second side pressure imparting area 23 in the conveying direction of the metal sheet 2, and a gap 26 is formed between the middle area 24 and the metal sheet 2 conveyed in the extrusion member 20. Figure 4 As shown, the inner periphery of the middle region 24 is separated from the metal sheet 2 passing through the middle region 24 by the gap 26, so no lateral pressure is applied to the metal sheet 2 passing through the middle region 24. It should be noted that if the radial length of the gap 26 is reduced to about several μm to several tens of μm in advance, it is possible to suppress the large horizontal deviation of the metal sheet 2 conveyed in the middle region 24, especially the metal sheet 2 in the middle of bonding, which is preferred.

[0049] The first lateral pressure applying region 22 and the second lateral pressure applying region 23 can be adjusted to a length of about 5% to 10% of the total length of the extrusion member 20 in the vertical direction. In this way, when the lengths of the first lateral pressure applying region 22 and the second lateral pressure applying region in the vertical direction are adjusted to be relatively small relative to the length of the middle region 24 in the vertical direction, the lateral pressure applied by the first lateral pressure applying region 22 and the second lateral pressure applying region 23 is increased compared to the case where the lateral pressure is applied by the extrusion member 20 as a whole.

[0050] In the manufacturing device 1 of the laminated body of the present embodiment, in addition to the above-mentioned configuration, a back pressure device 30 may be further included to mainly promote the adhesion between the metal sheets 2 stacked in the extrusion 20. The back pressure device 30 may support the metal sheet 2 conveyed in the extrusion 20 in a manner that presses the metal sheet 2 from the downstream side of the conveying direction toward the upstream side of the conveying direction. In other words, it may be possible to apply back pressure to the plurality of metal sheets 2 punched by the punching mechanism 10 and pressed into the extrusion 20 from the side opposite to the position where the punch 11 is provided, that is, the side where the lower end 20B is located.

[0051] The back pressure device 30 may include at least: a receiving platform 31, which contacts the metal sheet 2 located at the most downstream side in the conveying direction among the metal sheets 2 conveyed along the extrusion 20; and a support arm 32, which applies a pressing force to the receiving platform 31 in the direction opposite to the conveying direction. Moreover, the support arm 32 is preferably connected to a driving mechanism that can convey a stacked body 3 output to the outside of the extrusion 20 to an arbitrary position. It may be that the back pressure device 30 always applies a pressing force to the metal sheet 2 conveyed in the extrusion 20 toward the upstream in the conveying direction, except for the timing of conveying the stacked body 3 to an arbitrary position. The pressing force may be applied, for example, by an elastic member (such as a gas spring) connected to the support arm 32.

[0052] The back pressure device 30 applies a pressing force to the metal sheet 2 conveyed in the extrusion member 20 toward the upstream side in the conveying direction. Thus, a pressing force along the stacking direction is applied to the stacked metal sheets 2, so that even when no pressing force is applied from the punch 11, the adhesion between the metal sheets 2 can be stably promoted.

[0053] In order to control the above-mentioned components, the manufacturing device 1 of this embodiment may further include a control device CU. The control device CU can be communicatively connected to the components of the manufacturing device 1 of the laminate or the driver that makes it operate via wired or wireless communication. For the control device CU, a well-known computer including a sequencer (Programmable Logic Controller; PLC) can be used. The well-known computer can be a computer including at least a processor, volatile and non-volatile memory, and various interfaces.

[0054] According to the manufacturing device 1 of the stacked body of the present embodiment, by having the above-mentioned structure, the load in the stacking direction when the metal sheets 2 are bonded to each other can be fully ensured. In detail, the manufacturing device of the stacked body in the past is a structure that applies lateral pressure to all metal sheets conveyed in the extrusion, so the load in the stacking direction from the punch or the back pressure device is distributed to each of the metal sheets. In contrast, in the manufacturing device 1 of the stacked body of the present embodiment, the extrusion 20 is provided with an intermediate area 24 that does not apply lateral pressure to the metal sheet 2, thereby, in the intermediate area 24, no friction force in the stacking direction is generated, and as a result, the load in the stacking direction is uniformly applied to the metal sheet 2 passing through the intermediate area 24. At this time, the load in the stacking direction uniformly applied to the metal sheet 2 is larger than the load obtained by the previous structure because there is no dispersion associated with the application of lateral pressure, and the load in the stacking direction that is most suitable for the bonding of the metal sheet 2 can be simply ensured. In addition, a relatively large load can be applied in the stacking direction, so that warping generated during the press working can be corrected and the metal sheets 2 can be brought into close contact with each other.

[0055] In addition, side pressure is applied to the metal sheet 2 conveyed near the upper end 20A and the lower end 20B of the extrusion 20 by the first side pressure applying area 22 and the second side pressure applying area 23, so that all the metal sheets 2 conveyed in the extrusion 20 can be stably maintained in the extrusion 20.

[0056] In addition, as for the back pressure device 30, increasing its pressing force (more specifically, back pressure) can increase the pressing force on the stacking direction of the metal sheet 2, and can stably implement the bonding of the metal sheets 2 to each other. On the other hand, sometimes if the pressing force of the back pressure device 30 becomes too large, when the punch 11 is rising, it will exceed the friction caused by the lateral pressure applied to the metal sheet 2, and the metal sheet 2 in the extrusion 20 will be pushed in the direction opposite to the conveying direction. If this upward push occurs, there may be a need to stop the manufacturing device 1 for maintenance, which reduces the manufacturing yield. However, in the manufacturing device 1 of the stacked body of the present embodiment, no lateral pressure is applied to the metal sheet 2 conveyed in the middle area 24, and therefore, the pressure applied to this part in the stacking direction is greater than the previous pressure. Therefore, even if the pressing force of the back pressure device 30 itself is not increased, the pressing force required for the bonding of the metal sheets 2 to each other can be ensured. In addition, when an anaerobic adhesive is used as the adhesive G, as described above, the load on the metal sheets 2 in the stacking direction can be increased, thereby making the metal sheets 2 more closely attached to each other and reliably blocking air, and promoting the reaction of the adhesive G.

[0057] <Method for producing laminate>

[0058] Next, the manufacturing method of the laminated body of the present embodiment is described. In the following description, an example is given of the case where the laminated body is manufactured using the manufacturing device 1 of the above-mentioned laminated body, but even a device other than the manufacturing device 1 can implement the manufacturing method of the laminated body disclosed in the present invention. However, the structure of the extrusion used in the manufacturing method of the laminated body of the present embodiment is set to be the same as the structure of the extrusion 20 in the manufacturing device 1 of the above-mentioned laminated body. That is, it is set to include: a first side pressure imparting area 22, located at the end on the upstream side of the conveying direction, pressing and supporting the side of the metal sheet 2 with a prescribed pressure; a second side pressure imparting area 23, located at the end on the downstream side of the conveying direction, pressing and supporting the side of the metal sheet 2 conveyed in the extrusion with a prescribed pressure; and an intermediate area 24, located between the first side pressure imparting area 22 and the second side pressure imparting area 23 in the conveying direction, and a gap 26 is formed between the intermediate area 24 and the metal sheet 2 conveyed in the extrusion 20. It should be noted that the description of the effects shown below also serves as a description of the effects of the manufacturing device 1 of the present embodiment.

[0059] In addition, the manufacturing method of the laminated body described below can be implemented by, for example, operating various components of the manufacturing device 1 of the laminated body based on a prescribed instruction from a computer of the control device CU included in the manufacturing device 1 of the laminated body. Therefore, the manufacturing method of the laminated body of the present embodiment can be provided in the form of a program such as software including instructions for causing a processor of the computer constituting the above-mentioned control device CU to execute a prescribed action, in the form of a non-transitory recording medium storing the program, or in the form of an application program provided via a network or the like.

[0060] Figures 5A to 5C 5 is an operation diagram for explaining an example of a method for manufacturing a laminated body according to an embodiment of the present disclosure. It should be noted that, in FIG. 5 , a laminated body formed by stacking four metal sheets 2 is shown as an example of the laminated body 3 to be manufactured, but the number of metal sheets 2 constituting one laminated body 3 is not particularly limited. The method for manufacturing a laminated body according to this embodiment first supplies the metal sheets 2 to the upper end 20A of the extruded member 20 in sequence.

[0061] The supply process of the metal sheet 2 is described in detail. First, the metal sheet 4 wound around a bobbin (not shown) is conveyed between the upper die 13 and the lower die 16 of the punching mechanism 10 using a conveying unit (not shown). At this time, an adhesive G, such as an anaerobic adhesive, may be applied at least partially to a suitable portion of one surface of the metal sheet 4, such as the lower surface.

[0062] Then, if Figure 5A As shown, the slide 14 is moved toward the metal plate 4 placed on the lower die 16 and the die 12, and the upper die 13 and the punch 11 are lowered in the direction of the arrow P1. Thus, the metal sheet 2 is punched out from the metal plate 4 by the punch 11 and the die 12. It should be noted that before the punching by the punch 11 and the die 12, a punching process for forming a central hole of the metal sheet 2 in the metal plate 4 using another punch and die is preferably performed.

[0063] The punched metal sheet 2 is pressed downward from the upper end portion 20A side through the through holes of the punch 12 and the lower die 16 into the through hole 21 of the extruded part 20 by the descent of the punch 11. The outer periphery of the metal sheet 2 pressed into the extruded part 20 abuts against the abutment portion 25 of the first side pressure imparting region 22, thereby imparting side pressure to the metal sheet 2. Figure 5B As shown, after the punch 11 is raised, the metal sheet 2 is also supported in the extrusion part 20 .

[0064] The supply of the metal sheets 2 achieved by the above-mentioned process can be continuously implemented. In addition, at this time, the plurality of metal sheets 2 supplied to the extrusion part 20 are preferably given a back pressure in the direction of the arrow P2 by the back pressure device 30. It should be noted that the back pressure from the back pressure device 30 is set to be much smaller than the pressure when the punch 11 presses the metal sheets 2.

[0065] When the metal sheet 2 is supplied to the upper end 20A of the extrusion 20, the supplied metal sheet 2 is then stacked and bonded inside the extrusion 20 and transported in the transport direction. The bonding of the metal sheet 2 and the transporting of the metal sheet 2 in the transport direction are automatically performed along with the supply of a new metal sheet 2 from the upper end 20A of the extrusion 20 by the descent of the punch 11. Specifically, the metal sheet 2 pressed into the extrusion 20 is stacked on the upper part of the metal sheet 2 pressed immediately before, and the metal sheets 2 are airtightly abutted against each other, thereby promoting the bonding reaction of the anaerobic adhesive G. In addition, each time a new metal sheet 2 is pressed into the upper end 20A of the extrusion 20, the metal sheet 2 currently held in the extrusion 20 is pressed by the pressed metal sheet 2 and transported downward in the extrusion 20 by an amount corresponding to its wall thickness.

[0066] As described above, the plurality of metal sheets 2 conveyed in the extrusion 20 are always pressed by the back pressure device 30, whereby the metal sheets 2 are in close contact with each other, and the bonding reaction of the anaerobic adhesive G is well promoted. In particular, a large load along the stacking direction is applied roughly uniformly to the metal sheet 2 passing through the middle area 24 of the extrusion 20, so that air can be reliably blocked from the adhesive G, and the metal sheets 2 can be reliably bonded to each other during the conveyance in the extrusion 20. In addition, the metal sheet 2 conveyed in the extrusion 20 is given lateral pressure by the first lateral pressure applying area 22 and the second lateral pressure applying area 23, so that the metal sheet 2 is stably held in the extrusion 20 regardless of the presence or absence of the back pressure generated by the back pressure device 30.

[0067] When the above-mentioned metal sheet 2 is conveyed, Figure 5B As shown, a laminated body 3 formed by bonding a plurality of metal sheets 2 is output from the lower end 20B of the extruded member 20. In this case, Figure 5C As shown, the stacked body 3 outputted can be transported to other devices or conveyors for transporting to other devices by operating the back pressure device 30. It should be noted that, when the back pressure device 30 transports a stacked body 3 outputted from the extrusion 20, the back pressure is not applied to the plurality of metal sheets 2 transported in the extrusion 20, but the supply of the metal sheets 2 by the punching mechanism 10 can continue. In this case, the stacked body 3 transported in the most downstream of the transport direction is kept in the extrusion 20 by the side pressure at the second side pressure applying area 23 at least until the back pressure device 30 is reset.

[0068] As described above, according to the method for manufacturing a laminated body of the present embodiment, during the curing of the adhesive G in the extrusion 20, a load can be reliably applied to the stacking thickness direction of the metal sheets 2. As a result, the warping of the metal sheets 2 generated when the metal sheets 2 are punched out can be corrected, and at the same time, the metal sheets 2 can be made to adhere to each other with a high load, and the metal sheets 2 can be reliably adhered. In addition, when an anaerobic adhesive is used as the adhesive G, the reaction of the adhesive G can be promoted by making the metal sheets 2 adhere to each other more closely and reliably blocking the air.

[0069] <Modification>

[0070] In the manufacturing apparatus 1 of the laminated body of the above-mentioned embodiment, the so-called in-mold lamination in which the lamination of the metal sheets 2 is performed in the apparatus including the upper mold 13 and the lower mold 16 is described. However, the present disclosure is also applicable to the so-called out-of-mold lamination in which the apparatus for punching the metal sheets 2 and the apparatus for laminating the metal sheets 2 are separated. Therefore, as a modified example of the above-mentioned embodiment, the manufacturing apparatus 1A and the manufacturing method of the laminated body based on the out-of-mold lamination are briefly described below.

[0071] Figure 6 1 is a schematic diagram showing an example of a manufacturing apparatus for a laminated body according to a modified example of the present disclosure. The manufacturing apparatus 1A for a laminated body according to this modified example may include the same configuration as the manufacturing apparatus 1 for a laminated body according to one embodiment described above, except that a metal sheet supply device 40 is used as a supply mechanism for the metal sheet 2 instead of the punching mechanism 10. Therefore, in the following, the same reference numerals as those used in the description of one embodiment are given to the parts having the same configuration as the manufacturing apparatus 1 for a laminated body according to one embodiment, and the description thereof is omitted, and the description is centered on the configuration different from the manufacturing apparatus 1 for a laminated body according to one embodiment.

[0072] like Figure 6 As shown, the manufacturing device 1A of the laminated body of this modified example includes an extrusion 20 and a metal sheet supply device 40 as an example of a supply mechanism. Among them, the extrusion 20 can be the same as the extrusion 20 of the manufacturing device 1 of the laminated body of one embodiment described above, and a back pressure device 30 can be provided on the downstream side of the conveying direction thereof.

[0073] The metal sheet supply device 40 is a device for supplying the metal sheet 2 to the extrusion 20, and includes at least: a metal sheet conveying path 41 for conveying the metal sheet 2; a press machine 42 for pressing the metal sheet 2 conveyed in the metal sheet conveying path 41 into the upper end 20A of the extrusion 20; and an adhesive coating device 43 for coating an adhesive G on at least a portion of at least a portion of at least one surface of the metal sheet 2 conveyed in the metal sheet conveying path 41.

[0074] The sheet metal conveying path 41 can be used to convey the sheet metal 2, for example, the sheet metal 2 that has been punched and formed into any shape in advance, to the press 42 in sequence. The sheet metal conveying path 41 can be composed of a known conveying unit such as a conveyor. A sheet metal input device 45 for sequentially supplying the sheet metal 2 to the sheet metal conveying path 41 is provided on the upstream side of the sheet metal conveying path 41, a press 42 is provided on the downstream side of the sheet metal conveying path 41, and an adhesive coating device 43 is provided between the sheet metal input device 45 of the sheet metal conveying path 41 and the press 42.

[0075] The press machine 42 can be used to press the metal sheets 2 conveyed on the metal sheet conveying path 41 into the upper end 20A of the extrusion member 20 in sequence. The press machine 42 can also include a ram 44, which is moved in a direction corresponding to the conveying direction (e.g., Figure 6 The X direction) crosses the direction (for example Figure 6 The metal sheet 2 is moved in the Z direction to supply the extruded part 20 in sequence.

[0076] The adhesive coating device 43 can coat at least one surface, for example, the back surface, of the metal sheet 2 conveyed on the metal sheet conveying path 41 with an adhesive G for bonding the metal sheets 2 to each other. Here, the applied adhesive G can be, for example, an anaerobic adhesive. In addition, the adhesive coating device 43 may not coat the adhesive G to a portion of the metal sheets 2 conveyed on the metal sheet conveying path 41, specifically, the metal sheet 2 located at the bottom when the metal sheets 2 are bonded to each other to form a stacked body 3.

[0077] The metal sheet supply device 40 including the above-mentioned structure may further include a curing agent coating device 46 for coating the metal sheet 2 with a curing agent at an intermediate position on the metal sheet conveying path 41. The curing agent coating device 46 may, for example, coat one surface, for example, of the metal sheet 2 conveyed on the metal sheet conveying path 41 with a curing agent (sometimes referred to as a primer) that promotes the bonding reaction of the adhesive G by contacting with the anaerobic adhesive G. It should be noted that the surface to which the curing agent coating device 46 is coated with the curing agent may also be the same surface as the surface to which the adhesive coating device 43 is coated with the adhesive G. However, in this case, it is better to adjust the coating position in such a way that the curing agent does not contact the adhesive G while the metal sheet 2 is conveyed on the metal sheet conveying path 41.

[0078] In addition, the metal sheet supply device 40 including the above-mentioned structure may further include an inspection device 47 for inspecting the coating state of the adhesive G by the adhesive coating device 43. The inspection device 47 may be arranged on the downstream side of the conveying direction on the metal sheet conveying path 41 relative to the adhesive coating device 43, and directly inspect the coating surface of the adhesive G using various sensors and imaging units. In addition, the inspection device 47 may also inspect the coating state of the curing agent in addition to inspecting the coating state of the adhesive G. In this case, it is preferable that the inspection device 47 is also arranged on the upper surface side of the metal sheet 2 conveyed on the metal sheet conveying path 41.

[0079] By using the sheet metal supply device 40 having the above-mentioned structure, the manufacturing device 1A of the laminated body of this modified example can also be applied to the so-called out-of-mold lamination in which the laminated body 3 is manufactured from the metal sheet 2 that has been punched and formed into a predetermined shape in advance. In addition, a method for manufacturing a laminated body using the manufacturing device 1A of the laminated body can also be provided. It should be noted that the manufacturing method of the laminated body can be realized by the control device CU in the manufacturing device 1A of the laminated body to operate various components of the manufacturing device 1A of the laminated body.

[0080] The manufacturing method of the laminated body in the case of the above-mentioned out-of-mold lamination can be the same as the manufacturing method of the laminated body of the above-mentioned embodiment, except for the process of supplying the metal sheet 2 to the upper end 20A of the extruded part 20. As the supply process of the metal sheet 2, it can be set to include the following processes: sequentially supplying the metal sheet 2 from the metal sheet input device 45 to the metal sheet conveying path 41; using the adhesive coating device 43 and the curing agent coating device 46 to apply the adhesive G and the curing agent to the metal sheet on the metal sheet conveying path 41; using the inspection device to inspect the coating state of the adhesive G and the curing agent of the metal sheet 2; and using the press machine 42 to press the metal sheet 2 on the metal sheet conveying path 41 into the upper end 20A of the extruded part 20 in sequence.

[0081] In the manufacturing device 1A and the manufacturing method of the laminated body of this modification, the same effects as those of the manufacturing device and the manufacturing method of the laminated body of the embodiment can be obtained. That is, when the adhesive G is cured in the extrusion 20, the load required for bonding can be reliably applied to the stacking thickness direction of the metal sheet 2. As a result, the warping of the metal sheet 2 can be corrected, and at the same time, the metal sheets 2 can be closely attached to each other with a high load. Therefore, even if the layer of the adhesive G is thin, the metal sheets 2 can be reliably bonded to each other.

[0082] The present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present disclosure. All of these modifications are included in the technical concept of the present disclosure.

[0083] All documents, including publications, patent applications, and patents, cited in this specification are specifically indicated, referenced, and cited individually, and all contents of each document are referenced and cited herein to the same extent as described herein.

[0084] Regarding the use of nouns and the same indicators used in association with the description of the present disclosure (especially in association with the following claims), as long as there is no special indication in this specification or there is no obvious contradiction with the context, it is interpreted as covering both single and multiple. Regarding the terms "have", "have", "include" and "include", as long as there is no special indication, it is interpreted as an open term (that is, "including but not limited to..."). Regarding the specific description of the numerical range in this specification, as long as there is no special indication in this specification, it is only intended to serve as a shorthand method for referring to each value falling within the range one by one, and each value is cited in the specification as if it is listed one by one in this specification. Regarding all methods described in this specification, as long as there is no special indication in this specification or there is no obvious contradiction with the context, it can be carried out in all appropriate orders. Regarding all examples or exemplary wordings used in this specification (such as "etc."), as long as there is no special claim, it is only intended to better illustrate the present disclosure, not to set a limitation on the scope of the present disclosure. Any wording in the specification is not interpreted as representing an element not recorded in the claims as an indispensable element in the implementation of the present disclosure.

[0085] In this specification, the preferred embodiments of the present disclosure are described, including the best mode known to the inventors for implementing the present disclosure. For those skilled in the art, as long as the above description is read, the deformation of these preferred embodiments should be known. The inventors expect that the skilled person will appropriately apply such deformation, and it is expected that the present disclosure will be implemented in a method other than the method specifically described in this specification. Therefore, as allowed in the applicable law, the present disclosure includes all modifications and equivalents of the contents recorded in the claims attached to this specification. Moreover, any combination of the above-mentioned elements in all deformations is included in the present disclosure, as long as it is not particularly pointed out in this specification or there is no obvious contradiction with the context.

Claims

1. A device for manufacturing a laminate, comprising: a supply mechanism for supplying a thin plate-shaped metal sheet, the metal sheet including a metal sheet having an adhesive applied to a portion of at least one surface; and An extrusion part has a conveying path for conveying the metal sheets supplied from the supply mechanism in a stacked manner. The extrusion part has: a first side pressure imparting region located at an end portion of the upstream side of the metal sheet in the conveying direction, and pressing and supporting at least a portion of a side surface of the metal sheet supplied from the supply mechanism with a predetermined pressure; a second side pressure imparting region located at an end portion on the downstream side in the conveying direction, for pressing and supporting at least a portion of a side surface of the metal sheet conveyed in the extrusion member with a predetermined pressure; and An intermediate region is located between the first side pressure applying region and the second side pressure applying region in the conveying direction, and a gap is formed between the intermediate region and the metal sheet conveyed in the extrusion member.

2. The manufacturing device of the laminated body according to claim 1, further comprising: The back pressure device supports the metal sheet conveyed in the conveyance path so as to press the metal sheet from a downstream side in the conveyance direction toward an upstream side in the conveyance direction.

3. The device for producing a laminate according to claim 1 or 2, in, The supply mechanism includes a punching mechanism including a punch and a die for punching out the metal piece of a predetermined shape from a strip-shaped thin plate, and the die is connected to an end portion of the extrusion on the upstream side in the conveying direction.

4. The device for producing a laminate according to claim 1 or 2, in, The supply mechanism comprises: a metal sheet conveying path for conveying the metal sheet; a press machine for pressing the metal sheet conveyed on the metal sheet conveying path toward the end portion on the upstream side of the conveying direction of the extrusion; and an adhesive coating device for coating adhesive on at least a portion of at least a portion of at least one surface of the metal sheet conveyed on the metal sheet conveying path.

5. A method for manufacturing a laminate, comprising the following steps: The thin plate-shaped metal sheets are supplied to an end portion on the upstream side in the conveying direction of the metal sheets in an extruder having a conveying path for conveying the metal sheets in sequence by stacking the metal sheets in sequence. in, The metal sheet includes a metal sheet with an adhesive applied to a portion of at least one surface, the extrusion member includes a first side pressure imparting region, a second side pressure imparting region, and an intermediate region, the first side pressure imparting region is located at the end portion on the upstream side of the conveying direction, pressing and supporting at least a portion of the side surface of the metal sheet with a specified pressure, the second side pressure imparting region is located at the end portion on the downstream side of the conveying direction, pressing and supporting at least a portion of the side surface of the metal sheet conveyed in the extrusion member with a specified pressure, the intermediate region is located between the first side pressure imparting region and the second side pressure imparting region in the conveying direction, and a gap is formed between the intermediate region and the metal sheet conveyed in the extrusion member; stacking and bonding the metal sheets in the conveying path and conveying them along the conveying direction; and A laminated body formed by bonding a plurality of the metal sheets is fed out from an end portion of the extrusion on the downstream side in the conveying direction.

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