CN117465115A - Laminate manufacturing apparatus and laminate manufacturing method - Google Patents

Abstract

The present invention relates to an apparatus and a method for manufacturing a laminate, which suppresses application deviation of an adhesive to a punched member in a laminate in which punched members are laminated. A laminate manufacturing apparatus for laminating a plurality of punched pieces via an adhesive comprises: the die assembly includes a punching mechanism for punching a punched member into a predetermined shape, a coating mechanism for coating an adhesive on a surface to be coated on a lower die side of the punched member, and a lamination mechanism for laminating a plurality of punched members to form a laminate via the adhesive. The coating mechanism includes an adhesive reservoir in which an adhesive is accumulated in the lower die, a nozzle portion that communicates with the adhesive reservoir and faces the surface to be coated and ejects the adhesive toward the surface to be coated, and an extrusion portion that enters and exits the adhesive reservoir. The extrusion part is inserted into the adhesive reservoir, whereby the adhesive in the adhesive reservoir is extruded toward the nozzle part and ejected from the nozzle part toward the surface to be coated. The volume of the extrusion portion entering the adhesive reservoir is constant.

Description

Laminate manufacturing apparatus and laminate manufacturing method

Technical Field

The present invention relates to a manufacturing apparatus and a manufacturing method for a laminate in which a plurality of punched pieces punched by a die are laminated via an adhesive.

Background

In the method for manufacturing the laminated core (laminated body) of patent document 1, an adhesive is applied in a noncontact manner to a magnetic metal plate (punched member) before or after punching into a predetermined shape by a die from the back side in the punching direction by a jet dispensing method. After a plurality of magnetic metal plates punched into a predetermined shape and coated with an adhesive are laminated, the adhesive is cured and integrated, and a laminated core in which a plurality of magnetic metal plates of a predetermined shape are laminated via the adhesive is manufactured.

Non-contact application of the adhesive to the magnetic metal plate by the spray dispensing method is performed by discharging (ejecting) the adhesive from a nozzle to the magnetic metal plate.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2020-89208

Disclosure of Invention

In the injection dispensing method, a compressor is usually connected to a nozzle, and the adhesive is ejected from the nozzle by the discharge pressure of the adhesive by the compressor.

Here, there is a case where the discharge amount of the adhesive from the nozzle varies due to the variation in the discharge pressure of the adhesive by the compressor. Variation in the amount of adhesive discharged from the nozzle causes variation in the amount of adhesive applied to the workpiece, and further causes variation in the quality of the laminate.

The present invention has been made in view of the above-described circumstances, and an object thereof is to suppress variation in the amount of adhesive applied to a punched member in the production of a laminate in which a plurality of punched members punched by a die are laminated via an adhesive.

Means for solving the problems

The present invention provides a laminate manufacturing apparatus for laminating a plurality of punched pieces punched by a fixed die and a movable die via an adhesive, wherein the laminate manufacturing apparatus includes: a punching mechanism for punching the punched member into a predetermined shape; a coating mechanism that coats the adhesive on a surface to be coated on the fixed die side of the punched part; and a lamination mechanism that forms the laminated body by laminating the punched pieces after punching through the adhesive, the coating mechanism including: an adhesive reservoir in which the adhesive is stored in the fixed mold; a nozzle portion that communicates with the adhesive reservoir, faces the surface to be coated, and ejects the adhesive onto the surface to be coated; and an extrusion part which enters and exits the adhesive reservoir, wherein the extrusion part enters the adhesive reservoir, the adhesive in the adhesive reservoir is extruded toward the nozzle part and is ejected from the nozzle part to the surface to be coated, and the extrusion part has a constant volume of the adhesive reservoir.

The present invention provides a method for producing a laminate by laminating a plurality of punched pieces punched by a fixed die and a movable die via an adhesive, the method comprising: a blanking step of blanking the workpiece into a predetermined shape; a coating step of coating the adhesive on a surface to be coated on the fixed die side of the punched part; and a lamination step of laminating the punched pieces after punching with the adhesive to form the laminated body, wherein an adhesive reservoir in which the adhesive is accumulated is provided in the fixing die, a nozzle portion facing the surface to be coated and ejecting the adhesive toward the surface to be coated is communicated with the adhesive reservoir, and an extrusion portion is allowed to enter and exit with respect to the adhesive reservoir, and in the application step, the extrusion portion enters with respect to the adhesive reservoir, whereby the adhesive in the adhesive reservoir is extruded toward the nozzle portion side and ejected from the nozzle portion toward the surface to be coated, and in the application step, the extrusion portion has a constant entry volume with respect to the adhesive reservoir.

Effects of the invention

According to the present invention, it is possible to suppress variation in the amount of adhesive applied to a punched member in the production of a laminate in which a plurality of punched members punched by a die are laminated via an adhesive.

Drawings

Fig. 1 shows a laminate manufacturing apparatus according to a first embodiment in a front view.

Fig. 2 schematically shows a coated form and a punched form of a punched member.

Fig. 3A shows the coating mechanism (before the start of the coating operation) of the first embodiment in a front cross-sectional view.

Fig. 3B is a front cross-sectional view showing the coating mechanism (the blanking member is pressed against the lower die by the stripper plate) according to the first embodiment.

Fig. 3C is a front cross-sectional view showing the coating mechanism (the opening of the adhesive reservoir is closed by the opening/closing valve portion) according to the first embodiment.

Fig. 3D shows the coating mechanism (large diameter portion of the extrusion pin enters the adhesive reservoir) of the first embodiment in a front sectional view.

Fig. 3E shows the coating mechanism (the large diameter portion of the extrusion pin is withdrawn from the adhesive reservoir) of the first embodiment in a front cross-sectional view.

Fig. 3F is a front cross-sectional view showing the coating mechanism (opening of the adhesive reservoir by the opening/closing valve portion) according to the first embodiment.

Fig. 4A shows the protrusion forming mechanism (at the time of non-operation, before pressing) in a front cross-sectional view.

Fig. 4B shows the protrusion forming mechanism (at the time of non-operation, after pressing) in a front cross-sectional view.

Fig. 4C shows the protrusion forming mechanism (at the time of operation, before pressing) in a front cross-sectional view.

Fig. 4D shows the protrusion forming mechanism (at the time of operation, after pressing) in a front cross-sectional view.

Fig. 5 schematically illustrates a protrusion formed on the coated surface of the punched member.

Fig. 6A shows a coating mechanism (before a coating operation starts) according to the second embodiment in a front cross-sectional view.

Fig. 6B is a front cross-sectional view showing an application mechanism (an opening of the adhesive reservoir is closed by an opening/closing valve portion) according to the second embodiment.

Fig. 6C shows the coating mechanism (large diameter portion of the extrusion pin enters the adhesive reservoir) of the second embodiment in a front sectional view.

Fig. 6D is a front cross-sectional view showing the coating mechanism (opening of the adhesive reservoir by the opening/closing valve portion) according to the second embodiment.

Fig. 6E shows the coating mechanism (the large diameter portion of the extrusion pin is withdrawn from the adhesive reservoir) of the second embodiment in a front cross-sectional view.

Description of the reference numerals

A punched body W; wa coated side (lower surface); wb protruding portion; wc front end; t thickness; h distance; alpha gap; a C laminate; g, an adhesive; a prescribes the shape; d, outer diameter; d outer diameter; f1 elastic force (effort); f2 spring force (force); l is the entry length; v into the volume; delta V reduced volume; h ejection amount; 1a laminate manufacturing apparatus; 2 lower die (fixed die); 3 upper die (movable die); 3a springs; 10 coating mechanism; 11 an adhesive reservoir; 11a opening portions; a 12 nozzle part; 13 a supply path; 14 supply means (supply section); 15 discharge paths; 15a first discharge path; 15b a second discharge path; 16 discharge means; 17, removing the template; 17a first through hole; 17b the second through hole 18 extrudes the pin; 18a large diameter portion (extrusion portion); 18b small diameter portion; an 18c receiving portion; 19 a first pressing pin; 20 a first receiving spring (first urging means); 21 an opening and closing pin; 21a main body portion; 21b an opening and closing valve section; a 21c receiving portion; 22 second press pins; a second receiving spring (second urging means); 24a first actuator; a 24a rod; a second actuator 25; 25a rod; 30 blanking mechanism; 31 removing the template; 32 punches; 33 stamping die; 40 a stacking mechanism; 41 stacking the pipes; a 42 heater; 43 a cooler; 50 a protrusion forming mechanism; 51 removing the template; 51a through holes; 52 an actuator; 52a rod; 53 cam; 53a inclined surface; 54 punch heads; 54a inclined surface; 55 die.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

< first embodiment >

(laminate manufacturing apparatus)

Fig. 1 shows a laminate manufacturing apparatus 1 according to a first embodiment in a front view. Fig. 2 schematically shows a coating form and a punching form of the workpiece W. The laminate manufacturing apparatus 1 is applied to a press machine. As shown in fig. 1, the laminate manufacturing apparatus 1 includes a lower die 2 as a fixed die, an upper die 3 as a movable die, a coating mechanism 10, a punching mechanism 30, a laminating mechanism 40, and a protrusion forming mechanism 50. The laminate manufacturing apparatus 1 manufactures a laminate C obtained by laminating a plurality of punched pieces W punched out by the lower die 2 and the upper die 3 via an adhesive G.

The lower die 2 and the upper die 3 are separated up and down, and opened and closed up and down. Specifically, the movable upper die 3 moves up and down with respect to the fixed lower die 2. Hereinafter, a direction orthogonal to the vertical direction is referred to as a lateral direction. In the following description, the "upstream side" and the "downstream side" are based on the moving direction of the work W and the laminate C.

The workpiece W is in a strip-like plate shape, and is intermittently moved between the lower die 2 and the upper die 3 by a feeding device (not shown). The workpiece W is arranged between the lower die 2 and the upper die 3 in a state of being lifted by a lifting pin (not shown). The punched material W is a metal plate such as a steel plate. The laminated body C is, for example, a laminated core (laminated core) and can be applied to a motor.

The coating mechanism 10 applies the adhesive G to a surface (lower surface) Wa to be coated on the lower die 2 side in the workpiece W. Details of the coating mechanism 10 will be described later.

The punching mechanism 30 punches out the workpiece W into a predetermined shape a (see fig. 2). In the present embodiment, the punching mechanism 30 is located downstream of the coating mechanism 10. The punching mechanism 30 is composed of a lower die 2, an upper die 3, a stripper plate 31, a punch 32, and a die 33. The stripper plate 31 is disposed between the lower die 2 and the upper die 3. The stripper plate 31 is connected to the upper die 3 by a spring (not shown). The stripper plate 31 moves up and down in conjunction with the up and down movement of the upper die 3, and is relatively displaced with respect to the upper die 3 by elastic deformation of a spring. By moving the upper die 3 downward, the stripper plate 31 presses the workpiece W against the upper surface of the lower die 2.

The punch 32 is connected to the upper die 3 and extends vertically. The punch 32 moves up and down in conjunction with the up and down movement of the upper die 3, and is movable relative to the stripper plate 31. The punch 32 can protrude downward from the stripper plate 31 through the through-hole of the stripper plate 31. The die 33 is open at the upper surface of the lower die 2 and faces the punch 32. The die 33 corresponds to the punch 32.

By moving the upper die 3 downward, the workpiece W is pressed against the upper surface of the lower die 2 by the stripper plate 31. By further moving the upper die 3 downward in this state, the punch 32 punches out the workpiece W to be punched, and the workpiece W is introduced into the die 33. Thereby, the workpiece W is punched by the punching mechanism 30 into a predetermined shape a (see fig. 2) corresponding to the shapes of the punch 32 and the die 33.

The lamination mechanism 40 forms a laminate C by laminating a plurality of punched pieces W punched into a predetermined shape a via an adhesive G. The stacking mechanism 40 is located downstream of the punching mechanism 30. The lamination mechanism 40 has a lamination duct 41, a heater 42, and a cooler 43.

The lamination pipe 41 is provided in the lower die 2 and is disposed immediately below the die 33 of the punching mechanism 30. The laminated duct 41 extends up and down. The upper end of the lamination pipe 41 communicates with the die 33. The lower end portion of the lamination duct 41 is opened at the lower surface of the lower die 2. The punched pieces W punched into the predetermined shape a by the plurality of punching mechanisms 30 are stacked in the stacking duct 41 via the adhesive G.

The heater 42 is provided at the wall portion on the upstream side of the laminated duct 41. The cooler 43 is provided at a wall portion on the downstream side of the laminated duct 41. The adhesive G is preferably thermosetting. The adhesive G interposed between the laminated punched pieces W is first heated by the heater 42 to be cured, and then cooled by the cooler 43 to be fixed. Thus, a laminate C is formed in which a plurality of punched pieces W are laminated via the adhesive G. The laminate C is discharged from the lamination duct 41 (lower die 2).

As will be described later, the protrusion forming mechanism 50 is operated to form a laminated body C for each predetermined number of punched pieces W in the laminated duct 41. One laminate C is separated from the other laminate C, and is not bonded by the adhesive G.

(Structure of coating mechanism)

The structure of the coating mechanism 10 will be described below with reference to fig. 3A. Fig. 3A shows the coating mechanism 10 in a front cross-sectional view. In the present embodiment, the coating mechanism 10 is located upstream of the punching mechanism 30. That is, the coating mechanism 10 applies the adhesive G to the coated surface (lower surface) Wa on the lower die 2 side in the work W before the work W is blanked by the blanking mechanism 30.

As shown in fig. 3A, the coating mechanism 10 is composed of a lower die 2, an upper die 3, an adhesive reservoir 11, a nozzle portion 12, a supply path 13, a supply device 14 as a supply portion, a discharge path 15, a discharge device 16, a stripper plate 17, an extrusion pin 18, a first pressing pin 19, a first receiving spring 20 as a first biasing mechanism, an opening and closing pin 21, a second pressing pin 22, and a second receiving spring 23 as a second biasing mechanism. Fig. 3A shows the coating operation of the coating mechanism 10 before the start.

The adhesive reservoir 11 is provided in the lower die 2. The adhesive reservoir 11 is a predetermined volume of storage space formed inside the lower die 2. The adhesive reservoir 11 is, for example, rectangular in cross section. The adhesive G is stored in the adhesive reservoir 11.

The nozzle portion 12 is provided inside the lower die 2. The nozzle portion 12 is disposed above the adhesive reservoir 11 and extends vertically. The nozzle portion 12 is formed of, for example, a tube. The lower end of the nozzle 12 communicates with the adhesive reservoir 11. The upper end portion of the nozzle portion 12 is located near the upper surface of the lower die 2. The upper end of the nozzle portion 12 faces the surface Wa to be coated of the workpiece W. The nozzle portion 12 ejects the adhesive G onto the surface Wa to be coated of the punched member W. A gap is left between the upper end of the nozzle 12 and the surface Wa to be coated of the workpiece W.

The supply path 13 is provided inside the lower die 2. The supply path 13 is disposed below the adhesive reservoir 11 and extends in the lateral direction. Here, an opening 11a is provided in the inner bottom surface of the adhesive reservoir 11. The opening 11a is recessed downward. The opening 11a is formed in a predetermined shape and size so as to fit an opening/closing valve 21b described later. One end of the supply path 13 communicates with an opening 11a of the adhesive reservoir 11.

The supply device 14 is connected to the other end of the supply path 13. The supply device 14 may be disposed outside the lower die 2. The supply device 14 is, for example, a supply pump or a supply compressor. The supply device (supply unit) 14 supplies the adhesive G to the adhesive reservoir 11 through the opening 11 a.

The discharge passage 15 is provided inside the lower die 2. The discharge path 15 includes a first discharge path 15a and a second discharge path 15b. The first discharge passage 15a is disposed around the upper portion of the nozzle portion 12, and extends vertically. The first discharge passage 15a accommodates an upper portion of the nozzle portion 12. The upper end portion of the first ejection path 15a opens on the upper surface of the lower die 2. The second discharge path 15b extends laterally. One end of the second discharge path 15b communicates with a lower end of the first discharge path 15 a.

A discharge device (liquid discharge device) 16 is connected to the other end portion of the second discharge path 15b of the discharge path 15. The ejector 16 may be disposed outside the lower die 2. The discharge device 16 is, for example, a suction pump or a suction compressor. The discharge device 16 sucks the adhesive G or air leaked from the upper end portion of the nozzle portion 12 through the discharge path 15.

The stripper plate 17 is disposed between the lower die 2 and the upper die 3. The stripper plate 17 is connected to the upper die 3 by a spring (not shown). The stripper plate 17 moves up and down in conjunction with the up and down movement of the upper die 3, and is relatively displaced with respect to the upper die 3 by elastic deformation of a spring. By moving the upper die 3 downward, the stripper plate 17 presses the workpiece W against the upper surface of the lower die 2. The stripper plate 17 may be integrated with the stripper plate 31 of the punching mechanism 30.

The extrusion pin 18 penetrates the first through hole 17a of the stripper plate 17. The extrusion pin 18 moves up and down relative to the stripper plate 17. The extrusion pin 18 extends up and down. The extrusion pin 18 extends downward from between the lower die 2 and the upper die 3 in the lower die 2, penetrates the adhesive reservoir 11 downward, and reaches a position below the adhesive reservoir 11.

The extrusion pin 18 has a substantially circular cross section. The extrusion pin 18 is composed of a large diameter portion 18a, a small diameter portion 18b, and a receiving portion 18c, which are extrusion portions, in order from the upper side. The large diameter portion 18a constitutes an upper portion of the extrusion pin 18. The small diameter portion 18b is continuous with the lower side of the large diameter portion 18 a. The receiving portion 18c is continuous with the lower side of the small diameter portion 18b and constitutes the lower end portion of the extrusion pin 18. The outer diameter D of the large diameter portion 18a is larger than the outer diameter D of the small diameter portion 18b (D > D).

Before the coating operation of the coating mechanism 10 is started, the large diameter portion 18a (outer diameter D) of the extrusion pin 18 is not disposed in the adhesive reservoir 11, but is retracted upward from the adhesive reservoir 11. On the other hand, the small diameter portion 18b (outer diameter d) of the extrusion pin 18 is disposed in the adhesive reservoir 11. As will be described later, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 enters and exits from the upper side with respect to the adhesive reservoir 11.

The first pressing pin 19 is integrally connected to the upper die 3 and moves up and down in conjunction with the up and down movement of the upper die 3. The first pressing pin 19 faces the large diameter portion 18a of the extrusion pin 18 from the upper side surface through the first through hole 17a of the stripper plate 17.

The first receiving spring 20 is provided inside the lower die 2. The first receiving spring 20 is disposed below the adhesive reservoir 11. The first receiving spring 20 is disposed below the receiving portion 18c of the extrusion pin 18. The first receiving spring 20 biases the extrusion pin 18 upward, that is, on the side opposite to the lower die 2 side, by an elastic force F1 (see fig. 3E) acting as the biasing force. The first receiving spring 20 receives a downward load from the extrusion pin 18 and pushes the extrusion pin 18 back upward. The first receiving spring 20 is, for example, a coil spring. The spring constant of the first receiving spring 20 is designed in consideration of the force from the upper die 3, the viscosity of the adhesive G, and the like so that the extrusion pin 18 does not vibrate excessively.

The opening and closing pin 21 penetrates the second through hole 17b of the stripper plate 17. The opening and closing pin 21 moves up and down relative to the stripper plate 17. The opening and closing pin 21 extends up and down. The opening/closing pin 21 extends downward from between the lower die 2 and the upper die 3 in the lower die 2, penetrates the adhesive reservoir 11 downward, and reaches a position below the adhesive reservoir 11. The opening/closing pin 21 passes through the opening 11a of the adhesive reservoir 11. The opening and closing pin 21 has a substantially circular cross section.

The opening/closing pin 21 is composed of a cylindrical (rod-like) main body portion 21a, an opening/closing valve portion 21b provided midway in the main body portion 21a, and a receiving portion 21c provided at a lower end portion of the main body portion 21a. The opening/closing valve portion 21b is preferably formed in a disk shape or a spherical shape. The opening/closing valve portion 21b is shaped like an abacus bead, for example. The opening/closing valve portion 21b is disposed in the adhesive reservoir 11. The outside diameter of the opening/closing valve portion 21b is larger than the outside diameter of the main body portion 21a.

The shape and size of the opening/closing valve portion 21b correspond to the shape and size of the opening portion 11a of the adhesive reservoir 11. The opening/closing valve portion 21b can be fitted into the opening portion 11a of the adhesive reservoir 11. Before the start of the application operation of the application mechanism 10, the opening/closing valve portion 21b is located above the opening portion 11a of the adhesive reservoir 11, and is not fitted into the opening portion 11a. As will be described later, the opening/closing valve portion 21b is fitted into or separated from the opening portion 11a of the adhesive reservoir 11 to close and open the opening portion 11a of the adhesive reservoir 11.

The second pressing pin 22 is integrally connected to the upper die 3 and moves up and down in conjunction with the up and down movement of the upper die 3. The second pressing pin 22 is connected to the upper die 3 via a spring 3 a. The second pressing pin 22 faces the main body 21a of the opening/closing pin 21 from the upper side through the second through hole 17b of the stripper plate 17.

The second receiving spring 23 is provided inside the lower die 2. The second receiving spring 23 is disposed below the opening 11a of the adhesive reservoir 11. The second receiving spring 23 is disposed below the receiving portion 21c of the opening/closing pin 21. The second receiving spring 23 biases the opening/closing pin 21 upward, that is, on the side opposite to the lower die 2 side, by an elastic force F2 (see fig. 3F) acting as the biasing force. The second receiving spring 23 receives a downward load from the opening/closing pin 21 and pushes the opening/closing pin 21 back upward. The second receiving spring 23 is, for example, a coil spring. The spring constant of the second receiving spring 23 is designed in consideration of the force from the upper die 3, the viscosity of the adhesive G, and the like so that the opening and closing pin 21 does not vibrate excessively.

The extrusion pin 18 and the opening/closing pin 21 are disposed outside the punched member W in the width direction (the paper surface direction in fig. 3A) so as not to interfere with the punched member W, which is not shown in detail. In the present embodiment, the number of nozzle portions 12 is two. The number of the nozzle units 12 may be one or three or more. The two nozzle portions 12 are arranged at a position facing the coated surface Wa of the workpiece W at intervals in the width direction (the paper surface direction in fig. 3A) of the workpiece W. Thus, the adhesive G can be applied to the application surface Wa of the punched material W at two locations with a gap therebetween in the width direction (see fig. 2).

(action of coating mechanism)

The operation of the coating mechanism 10 will be described below with reference to fig. 3A to 3F. First, as shown in fig. 3A, before the coating operation of the coating mechanism 10 is started, the lower die 2 and the upper die 3 are maximally opened (the upper die 3 is maximally positioned above the lower die 2). The stripper plate 17 is located on the upper side with respect to the lower die 2.

The adhesive G is stored in the adhesive storage 11 (including the opening 11 a). The adhesive reservoir 11 is filled with the adhesive G. The adhesive G is supplied from the supply device 14, passes through the supply path 13, and is supplied to the adhesive reservoir 11 through the opening 11a in this order.

The large diameter portion 18a (outer diameter D) of the extrusion pin 18 is retracted upward from the adhesive reservoir 11. Before the start of the coating operation of the coating mechanism 10, the large diameter portion 18a (outer diameter D) of the extrusion pin 18 may not be retracted upward from the adhesive reservoir 11 (the same applies hereinafter). The small diameter portion 18b (outer diameter d) of the extrusion pin 18 is disposed in the adhesive reservoir 11. The opening/closing valve portion 21b of the opening/closing pin 21 is located above the opening portion 11a of the adhesive reservoir 11, and is not fitted into the opening portion 11a, and opens the opening portion 11 a.

Next, as shown in fig. 3B, when the upper die 3 moves downward, the stripper plate 17 moves downward in conjunction with the upper die 3, and presses the workpiece W against the upper surface of the lower die 2. Similarly, the first pressing pin 19 and the second pressing pin 22 also move downward in conjunction with the upper die 3. Since the stripper plate 17 does not move further after abutting against the upper surface (the workpiece W) of the lower die 2, the first presser pin 19 and the second presser pin 22 move further downward relative to the stripper plate 17.

The second pressing pin 22 is brought into contact with the body portion 21a of the opening/closing pin 21 through the second through hole 17b of the stripper plate 17. On the other hand, the first pressing pin 19 is still located on the upper side of the stripper plate 17, faces the large diameter portion 18a of the extrusion pin 18 only through the first through hole 17a of the stripper plate 17 from the upper side, and does not contact the large diameter portion 18a of the extrusion pin 18.

Next, as shown in fig. 3C, when the upper die 3 moves further downward, the second pressing pin 22 presses down the main body portion 21a of the opening/closing pin 21, and moves the opening/closing valve portion 21b of the opening/closing pin 21 downward. Here, the opening/closing valve portion 21b of the opening/closing pin 21 is biased upward, that is, on the side opposite to the lower die 2 side, by the elastic force F2 (see fig. 3F) of the second receiving spring 23. That is, the opening/closing valve portion 21b of the opening/closing pin 21 is pressed downward by the upper die 3 via the second pressing pin 22, and moves downward, that is, toward the lower die 2, against the elastic force F2 (see fig. 3F) of the second receiving spring 23. Therefore, the opening/closing valve portion 21b of the opening/closing pin 21 is fitted into the opening portion 11a of the adhesive reservoir 11, and the opening portion 11a is closed.

As a result, the inflow of the adhesive G from the supply device 14 into the adhesive reservoir 11 is suppressed, and thus the amount of the adhesive G in the adhesive reservoir 11 is unchanged. Further, since the opening/closing valve portion 21b is fitted only into the opening portion 11a, the volume of the opening/closing pin 21 (the main body portion 21a and the opening/closing valve portion 21 b) located in the adhesive reservoir 11 (including the opening portion 11 a) does not change. Therefore, the adhesive G in the adhesive reservoir 11 is not pushed out to the outside, and thus the suction of air by the nozzle portion 12 is suppressed, and the lowering of the liquid surface of the adhesive G in the upper end portion of the nozzle portion 12 is suppressed.

At the same time, the first pressing pin 19 passes through the first through hole 17a of the stripper plate 17 and contacts the large diameter portion 18a of the extrusion pin 18.

Next, as shown in fig. 3D, when the upper die 3 is moved further downward, the first pressing pin 19 presses down the large diameter portion 18a of the extrusion pin 18, and moves the large diameter portion 18a of the extrusion pin 18 downward. Here, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 is biased upward, that is, on the side opposite to the lower die 2 side, by the elastic force F1 (see fig. 3E) of the first receiving spring 20. That is, the large diameter portion 18a of the extrusion pin 18 is pressed downward by the upper die 3 via the first pressing pin 19, and moves downward, that is, toward the lower die 2, against the elastic force F1 (see fig. 3E) of the first receiving spring 20. Thus, the large diameter portion 18a of the extrusion pin 18 is opposed to the adhesive reservoir 11 from the upper side.

The large diameter portion (extrusion portion) 18a of the extrusion pin 18 is introduced from the upper side with respect to the adhesive reservoir 11, whereby the adhesive G in the adhesive reservoir 11 is extruded toward the nozzle portion 12 side and is ejected from the nozzle portion 12 toward the surface Wa to be coated of the punched member W.

Specifically, the large diameter portion 18a (outer diameter D) of the extrusion pin 18 is introduced from the upper side with respect to the adhesive reservoir 11 in which only the small diameter portion 18b (outer diameter D) of the extrusion pin 18 is disposed (see fig. 3C), and therefore the volume of the adhesive reservoir 11 is reduced. The adhesive G in the adhesive reservoir 11 is pushed out toward the nozzle 12 by the reduced volume, and is ejected from the nozzle 12 toward the surface Wa to be coated of the workpiece W.

The large diameter portion (extrusion portion) 18a of the extrusion pin 18 is inserted into the adhesive reservoir 11 after the opening 11a of the adhesive reservoir 11 is closed by the opening/closing valve portion 21b of the opening/closing pin 21.

The large diameter portion (extrusion portion) 18a of the extrusion pin 18 is constant with respect to the entry length L of the adhesive reservoir 11. Since the entry length L is constant, the large diameter portion 18a of the extrusion pin 18 is opposed toThe volume V of the adhesive reservoir 11 is constant. Since the entry volume V is constant, the volume Δv of the adhesive reservoir 11 reduced by the entry of the large diameter portion 18a of the extrusion pin 18 is constant. The discharge amount (discharge volume) H of the adhesive G from the nozzle 12 to the surface Wa to be coated of the workpiece W is equal to the reduction volume Δv, and is constant. In the case where the large diameter portion 18a and the small diameter portion 18b are columnar, the inlet volume V is set to pi LD ² And/4, the volume ΔV (=ejection rate H) is reduced by pi L (D ² -d ² ) And/4.

The adhesive G or air leaking from the upper end of the nozzle 12 is sucked by the discharge device 16 through the discharge passage 15.

Next, as shown in fig. 3E, when the upper die 3 moves upward, the first pressing pin 19 and the second pressing pin 22 also move upward in conjunction with each other. Then, first, the pressing of the extrusion pin 18 by the first pressing pin 19 is released. As a result, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 moves upward due to the elastic force F1 of the first receiving spring 20, and withdraws upward from the adhesive reservoir 11, and retracts upward from the adhesive reservoir 11.

At this point, the pressing of the opening/closing pin 21 by the second pressing pin 22 is continued. Therefore, the opening/closing valve portion 21b of the opening/closing pin 21 is kept fitted into the opening portion 11a of the adhesive reservoir 11, and the opening portion 11a is kept closed.

Next, as shown in fig. 3F, when the upper die 3 moves further upward, the first pressing pin 19 and the second pressing pin 22 also move further upward in conjunction with each other. Then, next, the opening/closing pin 21 is pushed down by the second push pin 22. Thereby, the opening/closing valve portion 21b of the opening/closing pin 21 moves upward due to the elastic force F2 of the second receiving spring 23, and is separated from the opening portion 11a of the adhesive reservoir 11, thereby opening the opening portion 11 a.

Then, the adhesive G is supplied again from the supply device 14 to the adhesive reservoir 11 through the opening 11a via the supply path 13. Then, the adhesive G whose volume Δv is reduced is supplied to the adhesive reservoir 11.

The large diameter portion (extrusion portion) 18a of the extrusion pin 18 moves up and down in conjunction with the upper die 3 by downward pressing by the first pressing pin 19 and upward biasing force by the elastic force F1 of the first receiving spring 20. The opening/closing valve portion 21b of the opening/closing pin 21 moves up and down in conjunction with the upper die 3 by upward biasing force due to the elastic force F2 of the second receiving spring 23 through downward pressing by the second pressing pin 22.

(Structure of protrusion Forming mechanism)

Hereinafter, the structure of the protrusion forming mechanism 50 will be described mainly with reference to fig. 4A. Fig. 4A shows the protrusion forming mechanism 50 in a front cross-sectional view. In the present embodiment, the protrusion forming mechanism 50 is located upstream of the coating mechanism 10 (see fig. 1). The protrusion forming mechanism 50 forms a protrusion Wb (see fig. 5) on the coated surface Wa of the workpiece W.

The protrusion forming mechanism 50 includes a stripper plate 51, an actuator 52, a cam 53, a punch 54, and a die 55. The stripper plate 51 is disposed between the lower die 2 and the upper die 3. The stripper plate 51 is connected to the upper die 3 by a spring (not shown). The stripper plate 51 moves up and down in conjunction with the up and down movement of the upper die 3, and is relatively displaced with respect to the upper die 3 by elastic deformation of a spring. By moving the upper die 3 downward, the stripper plate 51 presses the workpiece W against the upper surface of the lower die 2. The stripper plate 51 may be integrated with the stripper plate 31 of the punching mechanism 30.

The actuator 52 is controlled by an external signal. The actuator 52 is disposed outside the upper die 3. The actuator 52 moves the rod 52a arbitrarily forward and backward in the lateral direction. The rod 52a extends laterally from the outside to the inside of the upper die 3. The actuator 52 can be of an air pressure type, an electric type, a hydraulic type, an electromagnetic type, or the like, for example.

The cam 53 is disposed inside the upper die 3 and is connected to the tip of the lever 52 a. An inclined surface 53a is formed at a lower portion of the cam 53. The punch 54 is connected to the upper die 3 and extends vertically. The punch 54 moves up and down in conjunction with the up and down movement of the upper die 3, and is movable relative to the stripper plate 51. The punch 54 can protrude downward from the stripper plate 51 through the through hole 51a of the stripper plate 51 (see fig. 4D). An inclined surface 54a is formed on the upper portion of the punch 54. The inclined surface 53a of the cam 53 slides on the inclined surface 54a of the punch 54. The die 55 is open at the upper surface of the lower die 2 and faces the punch 54. The die 55 corresponds to the punch 54.

(action of protrusion Forming mechanism)

The operation of the protrusion forming mechanism 50 will be described below with reference to fig. 4A to 4D. First, as shown in fig. 4A, in the non-operation of the protrusion forming mechanism 50, the rod 52a of the actuator 52 is retracted. The stripper plate 51 is located above the upper surface of the lower die 2 and is located before the blanking member W is pressed against the upper surface of the lower die 2. The punch 54 is retracted upward from the stripper plate 51 in the through-hole 51a of the stripper plate 51.

Next, as shown in fig. 4B, when the upper die 3 moves downward during the non-operation of the protrusion forming mechanism 50, the stripper plate 51 moves downward in conjunction with the upper die 3, and presses the workpiece W against the upper surface of the lower die 2. Since the stripper plate 51 does not move further after abutting against the upper surface (the workpiece W) of the lower die 2, the punch 54 moves further downward relative to the stripper plate 51. However, the punch 54 does not reach the die 55 (upper surface of the lower die 2). That is, when the protrusion forming mechanism 50 is not operated, the protrusion Wb is not formed on the coated surface Wa of the workpiece W.

On the other hand, as shown in fig. 4C, the lever 52a of the actuator 52 protrudes upon operation of the protrusion forming mechanism 50. Accordingly, the inclined surface 53a of the cam 53 slides on the inclined surface 54a of the punch 54, and thereby the cam 53 presses the punch 54 downward. The punch 54 protrudes in the through hole 51a of the stripper plate 51 toward the vicinity of the lower end of the stripper plate 51. The stripper plate 51 is located above the upper surface of the lower die 2 and is located before the punched material W is pressed against the upper surface of the lower die 2.

Next, as shown in fig. 4D, when the upper die 3 moves downward during operation of the protrusion forming mechanism 50, the stripper plate 51 moves downward in conjunction with the upper die 3, and presses the workpiece W against the upper surface of the lower die 2. Since the stripper plate 51 does not move further after abutting against the upper surface (the workpiece W) of the lower die 2, the punch 54 moves further downward relative to the stripper plate 51. Then, the punch 54 protrudes downward from the stripper plate 51 through the through hole 51a of the stripper plate 51, and reaches the die 55 (upper surface of the lower die 2). That is, the protrusion Wb is formed on the coated surface Wa of the workpiece W during operation of the protrusion forming mechanism 50.

Fig. 5 schematically illustrates the protrusion Wb formed on the coated surface Wa of the workpiece W by the protrusion forming mechanism 50. The protruding portion Wb protrudes downward from the coated surface Wa of the workpiece W, i.e., toward the lower die 2. The protruding portion Wb is also called a stake (dowel). The distance h from the surface Wa to be coated of the punched material W to the tip Wc of the protruding portion Wb is larger than the thickness t of the adhesive G applied to the surface Wa to be coated (h > t).

When a plurality of punched members W are laminated via the adhesive G, a gap α is formed between the lower surface of the adhesive G applied to the surface Wa of the punched member W having the protruding portion Wb on the upper layer and the upper surface of the punched member W on the lower layer. Therefore, the upper punched member W and the lower punched member W are separated from each other, and are not bonded to each other by the adhesive G. By providing the protruding portions Wb on the work W every predetermined number of pieces, the work W can be separated every predetermined number of pieces, and the laminated body C composed of the predetermined number of work W can be formed.

(effects of action)

According to the present embodiment, as shown in fig. 3D, since the large diameter portion (extrusion portion) 18a of the extrusion pin 18 is constant with respect to the entry volume V of the adhesive reservoir 11, the reduced volume Δv of the adhesive reservoir 11 becomes constant. The discharge amount (discharge volume) H of the adhesive G from the nozzle 12 to the surface Wa to be coated of the workpiece W is equal to the reduced volume Δv, and is constant.

As described above, in the production of the laminate C in which the punched pieces W punched out by the dies 2 and 3 are laminated via the adhesive G, the variation in the application amount of the adhesive G to the punched pieces W can be suppressed.

For example, the amount of the adhesive G applied to the work W can be made constant regardless of the feed speed of the work W fed by the press machine, and variation in quality of the laminate C can be suppressed.

As shown in fig. 3C and 3D, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 is inserted into the adhesive reservoir 11 after the opening 11a of the adhesive reservoir 11 is closed by the opening/closing valve portion 21b of the opening/closing pin 21. In other words, the large diameter portion 18a of the extrusion pin 18 is entered into the adhesive reservoir 11 while the inflow of the adhesive G from the supply device 14 into the adhesive reservoir 11 is suppressed and the amount of the adhesive G in the adhesive reservoir 11 is unchanged.

In this way, when the large diameter portion (extrusion portion) 18a of the extrusion pin 18 is made to enter the adhesive agent reservoir 11 at a constant entry volume V, it is advantageous in that the discharge amount (discharge volume) H of the adhesive agent G from the nozzle portion 12 to the surface Wa to be coated of the punched member W is made constant.

As shown in fig. 3C, the opening/closing valve portion 21b is fitted only into the opening portion 11a, and therefore the volume of the opening/closing pin 21 (the main body portion 21a and the opening/closing valve portion 21 b) located in the adhesive reservoir 11 (including the opening portion 11 a) is not changed. Therefore, the adhesive G in the adhesive reservoir 11 is not pushed out to the outside, and thus the suction of air by the nozzle portion 12 is suppressed, and the drop in the liquid surface of the adhesive G in the upper end portion of the nozzle portion 12 can be suppressed.

As shown in fig. 3D and 3E, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 moves up and down in conjunction with the upper die 3. Here, the stroke of the up-and-down movement of the upper die 3 is generally unchanged. Therefore, the stroke of the large diameter portion 18a of the extrusion pin 18 to move up and down is not changed, and the entry volume V of the large diameter portion 18a of the extrusion pin 18 to the adhesive reservoir 11 is easily made constant.

As shown in fig. 3C and 3F, the opening/closing valve portion 21b of the opening/closing pin 21 moves up and down in conjunction with the upper die 3, as in the case of the large diameter portion (extrusion portion) 18a of the extrusion pin 18. By moving both the opening and closing valve portion 21b of the opening and closing pin 21 and the large diameter portion 18a of the extruding pin 18 up and down in conjunction with the upper die 3, it is possible to easily follow the procedure of closing the opening and closing valve portion 21b of the opening and closing pin 21 after closing the opening 11a of the adhesive reservoir 11 by the large diameter portion 18a of the extruding pin 18 with respect to the adhesive reservoir 11.

By the downward pressing by the first pressing pin 19 and the upward biasing force by the elastic force F1 of the first receiving spring 20, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 can be easily interlocked with the up-and-down movement of the upper die 3.

Similarly, by downward pressing by the second pressing pin 22 and upward biasing by the elastic force F2 of the second receiving spring 23, the on-off valve portion 21b of the opening-closing pin 21 can be easily interlocked with the up-and-down movement of the upper die 3.

By providing the protruding portions Wb on the punched objects W by the protruding portion forming mechanism 50 every predetermined number of sheets, the punched objects W can be separated every predetermined number of sheets, and the laminated body C composed of the predetermined number of punched objects W can be formed.

< second embodiment >

Fig. 6A to 6E show the coating mechanism 10 of the second embodiment in a front cross-sectional view. In the following description, the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof may be omitted. For simplicity, the upper die 3 and the stripper plate 17 are omitted.

As shown in fig. 6A, in the present embodiment, unlike the first embodiment, the first pressing pin 19 and the first and second pressing pins 20 and 22 and the second receiving spring 23 are not present. In the present embodiment, the coating mechanism 10 includes a first actuator 24 and a second actuator 25.

The first actuator 24 is controlled by an external signal. The first actuator 24 is disposed on the lower outer side of the lower die 2. The first actuator 24 moves the rod 24a up and down arbitrarily. The rod 24a extends up and down from the lower outer side of the lower die 2 to the inside. A receiving portion 18c of the extrusion pin 18 is connected to an upper end portion of the lever 24a of the first actuator 24. The first actuator 24 can be of an air pressure type, an electric type, a hydraulic type, an electromagnetic type, or the like.

The second actuator 25 is controlled by an external signal. The second actuator 25 is disposed on the lower outer side of the lower die 2. The second actuator 25 moves the rod 25a up and down arbitrarily. The rod 25a extends up and down from the lower outer side of the lower die 2 to the inside. The receiving portion 21c of the opening/closing pin 21 is connected to the upper end portion of the lever 25a of the second actuator 25. The second actuator 25 can be of an air pressure type, an electric type, a hydraulic type, an electromagnetic type, or the like, for example.

The large diameter portion (extrusion portion) 18a of the extrusion pin 18 moves up and down independently of the upper die 3 by the upward and downward advancing and retreating movement of the rod 24a by the first actuator 24. The opening/closing valve portion 21b of the opening/closing pin 21 moves up and down independently of the upper die 3 by the upward and downward advancing and retreating movement of the rod 25a by the second actuator 25.

As shown in fig. 6A, before the coating operation of the coating mechanism 10 starts, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 is retracted upward from the adhesive reservoir 11. The opening/closing valve portion 21b of the opening/closing pin 21 is located above the opening portion 11a of the adhesive reservoir 11, and opens the opening portion 11a.

Next, as shown in fig. 6B, by the downward movement of the lever 25a by the second actuator 25, the opening/closing valve portion 21B of the opening/closing pin 21 moves downward independently of the upper die 3, and the opening 11a of the adhesive reservoir 11 is closed.

Then, as shown in fig. 6C, by the downward movement of the rod 24a by the first actuator 24, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 moves downward independently of the upper die 3, and enters from the upper side with respect to the adhesive reservoir 11. As a result, the adhesive G in the adhesive reservoir 11 is pushed out toward the nozzle 12, and is ejected from the nozzle 12 toward the surface Wa to be coated of the workpiece W.

By appropriately controlling the driving sequence of the first actuator 24 and the second actuator 25 in this manner, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 is moved into the adhesive reservoir 11, and then the opening 11a of the adhesive reservoir 11 is closed by the opening/closing valve portion 21b of the opening/closing pin 21.

The large diameter portion (extrusion portion) 18a of the extrusion pin 18 is constant in the entry volume V (entry length L) of the adhesive reservoir 11 by controlling the movement amount of the rod 24a moved by the first actuator 24.

Next, as shown in fig. 6D, by upward movement of the lever 25a by the second actuator 25, the opening/closing valve portion 21b of the opening/closing pin 21 moves upward independently of the upper die 3, and the opening portion 11a of the adhesive reservoir 11 is opened.

Next, as shown in fig. 6E, by upward movement of the rod 24a by the first actuator 24, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 moves upward independently of the upper die 3, and is withdrawn from the adhesive reservoir 11.

According to the present embodiment, by stopping the driving of the first actuator 24, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 is not allowed to enter the adhesive reservoir 11, and thus the adhesive G can be prevented from being ejected from the nozzle portion 12 onto the surface Wa to be coated of the punched member W.

Therefore, even in the case where the protrusion forming mechanism 50 of the first embodiment is not provided, the discharge of the adhesive G from the nozzle 12 to the surface Wa to be coated of the punched member W can be stopped every predetermined number of times by stopping the driving of the first actuator 24 every predetermined number of times. Thus, even with a simple configuration in which the protrusion forming mechanism 50 is not provided, the punched pieces W can be separated every predetermined number of pieces, and the laminated body C composed of the predetermined number of punched pieces W can be formed.

< other embodiments >

The present invention has been described above by way of preferred embodiments, but such description is not limiting, and various modifications are possible.

The arrangement of the coating mechanism 10, the punching mechanism 30, the stacking mechanism 40, and the protrusion forming mechanism 50 may be arbitrarily changed as long as the stacking mechanism 40 is positioned at the most downstream side. For example, the coating mechanism 10 may be located downstream of the punching mechanism 30, and after the punching mechanism 30 punches out the work W, the adhesive G may be coated on the coated surface Wa of the work W. The protrusion forming mechanism 50 may be located downstream of the applying mechanism 10 and the punching mechanism 30. The punching mechanism 30 and the stacking mechanism 40 are preferably arranged in a group on the most downstream side.

In the first embodiment, the extrusion pin 18 and the opening/closing pin 21 may be directly connected to the upper die 3. It is preferable to add a mechanism for providing a time difference between the driving of the extrusion pin 18 and the driving of the opening/closing pin 21. In this case, too, the large diameter portion (extrusion portion) 18a of the extrusion pin 18 and the opening/closing valve portion 21b of the opening/closing pin 21 move up and down in conjunction with the upper die 3.

The first receiving spring (first biasing means) 20 and the second receiving spring (second biasing means) 23 may be integrated. The first biasing mechanism 20 and the second biasing mechanism 23 are not limited to coil springs, and may be elastic members such as leaf springs and rubber, or may be air springs. The first actuator 24 and the second actuator 25 may be integrated. It is preferable to add a mechanism for providing a time difference between the driving of the first actuator 24 and the driving of the second actuator 25.

The fixed mold 2 and the movable mold 3 may be separated from each other in the left-right direction and opened and closed in the left-right direction. The laminate C is not limited to being applied to a motor, and may be applied to various motor products, or may be applied to other motor products. The punched material W is not limited to a metal material, and may be made of, for example, a resin material. The actuators 24, 25, 52 may also be arranged inside the mould 2, 3.

The laminate manufacturing method of the present invention is a method for manufacturing a laminate C by laminating a plurality of punched pieces W punched by a fixed die 2 and a movable die 3 via an adhesive G, and includes: the method comprises a punching step of punching a punched material (W) into a predetermined shape (A), an application step of applying an adhesive (G) to an application surface (Wa) of a fixed die (2) side of the punched material (W), and a lamination step of laminating a plurality of punched materials (W) through the adhesive (G) to form a laminate (C), wherein an adhesive reservoir (11) for storing the adhesive (G) is provided in the fixed die (2), a nozzle (12) for spraying the adhesive (G) to the application surface (Wa) is communicated with the adhesive reservoir (11), an extrusion part (18 a) can enter and exit the adhesive reservoir (11), and the adhesive (G) in the adhesive reservoir (11) is extruded to the nozzle (12) side and is sprayed to the application surface (Wa) from the nozzle (12), and the entering volume (V) of the extrusion part (18 a) to the adhesive reservoir (11) is constant in the application step.

Industrial applicability

The present invention is useful for the production of a laminate, and has high industrial applicability.

Claims (10)

1. A laminate manufacturing apparatus for laminating a plurality of punched pieces punched by a fixed die and a movable die via an adhesive, wherein,

the laminate manufacturing apparatus is provided with:

a punching mechanism for punching the punched member into a predetermined shape;

a coating mechanism that coats the adhesive on a surface to be coated on the fixed die side of the punched part; and

a lamination mechanism for laminating a plurality of punched pieces via the adhesive to form the laminated body,

the coating mechanism includes:

an adhesive reservoir in which the adhesive is stored in the fixed mold;

a nozzle portion that communicates with the adhesive reservoir, faces the surface to be coated, and ejects the adhesive onto the surface to be coated; and

an extrusion part which enters and exits the adhesive reservoir,

the extrusion part is inserted into the adhesive reservoir, so that the adhesive in the adhesive reservoir is extruded toward the nozzle part and ejected from the nozzle part toward the surface to be coated,

the extrusion section has a constant volume of the adhesive reservoir.

2. The apparatus for producing a laminate according to claim 1, wherein,

the coating mechanism includes:

a supply unit that supplies the adhesive to the adhesive reservoir via an opening provided in the adhesive reservoir; and

an opening/closing valve section for closing and opening the opening section,

the extrusion portion is inserted into the adhesive reservoir after the opening is closed by the opening/closing valve portion.

3. The apparatus for producing a laminate according to claim 1, wherein,

the extrusion part moves in conjunction with the movable die.

4. The apparatus for producing a laminate according to claim 2, wherein,

the extrusion part moves in linkage with the movable die,

the opening/closing valve portion moves in conjunction with the movable mold.

5. The apparatus for producing a laminate according to claim 3, wherein,

the extrusion part is biased to a side opposite to the fixed die side by a biasing force of a biasing mechanism, and is moved to the fixed die side against the biasing force of the biasing mechanism by being pressed by the movable die.

6. The apparatus for producing a laminate according to claim 4, wherein,

The extrusion part is forced to the opposite side of the fixed die by the acting force of a first forcing mechanism, and is pressed by the movable die to overcome the acting force of the first forcing mechanism and move to the fixed die side,

the opening/closing valve portion is biased to a side opposite to the fixed die side by a biasing force of a second biasing mechanism, and is moved to the fixed die side against the biasing force of the second biasing mechanism by being pressed by the movable die.

7. The apparatus for producing a laminate according to claim 1, wherein,

the extrusion part is moved independently of the movable die by an actuator.

8. The apparatus for producing a laminate according to claim 2, wherein,

the extrusion is moved independently of the movable die by a first actuator,

the opening/closing valve portion is moved independently of the movable die by a second actuator.

9. The apparatus for producing a laminate according to any one of claims 1 to 8, wherein,

the laminate manufacturing apparatus further includes a protrusion forming mechanism that forms a protrusion protruding from the coated surface of the punched member toward the fixed die,

The distance from the coated surface to the tip of the protruding portion is larger than the thickness of the adhesive applied to the coated surface.

10. A method for producing a laminate by laminating a plurality of punched members punched by a fixed die and a movable die via an adhesive,

the method for manufacturing the laminate comprises:

a blanking step of blanking the workpiece into a predetermined shape;

a coating step of coating the adhesive on a surface to be coated on the fixed die side of the punched part; and

a lamination step of laminating a plurality of punched pieces via the adhesive to form the laminated body,

an adhesive reservoir in which the adhesive is deposited is provided in the fixing mold,

a nozzle part which faces the surface to be coated and ejects the adhesive to the surface to be coated is communicated with the adhesive reservoir part,

the extrusion part can enter and exit the adhesive reservoir,

in the coating step, the extrusion part is inserted into the adhesive reservoir, whereby the adhesive in the adhesive reservoir is extruded toward the nozzle part and ejected from the nozzle part toward the surface to be coated,

In the coating step, the entry volume of the extrusion part into the adhesive reservoir is constant.