WO2018216496A1

WO2018216496A1 - Tool and method for manufacturing laminate

Info

Publication number: WO2018216496A1
Application number: PCT/JP2018/018209
Authority: WO
Inventors: 武明小園; 裕介蓮尾
Original assignee: 株式会社三井ハイテック
Priority date: 2017-05-26
Filing date: 2018-05-10
Publication date: 2018-11-29
Also published as: JP6853732B2; JP2018201300A; CN110710088B; CN110710088A

Abstract

A tool 100 is provided with: a first component 110 that holds a laminate; and a second component 120 that supports the first component 110, wherein the second component 120 has an arrangement surface 121a on which a plurality of the first components 110 can be disposed side by side, and a plurality of positioning holes (through-holes 121b) forming openings in the arrangement surface 121a, and the first component 110 has a plate 111 that supports the laminate, a holding part 112 that holds the laminate supported by the plate 111 from the outer peripheral side; and a projected part 113 that projects downward from the plate 111 and is inserted into one of the positioning holes of the second component 120.

Description

Jig and laminate manufacturing method

The present disclosure relates to a method for manufacturing a jig and a laminate.

Patent Document 1 discloses a jig for heat-treating a pinion and a tube. This jig includes a cylindrical side wall portion and a bottom wall portion formed at the axially central portion of the side wall portion. A columnar support portion for supporting the pinion is provided on the upper surface of the bottom wall portion. A columnar support portion for supporting the tube is provided on the lower surface of the bottom wall portion.

Japanese Unexamined Patent Publication No. 2008-38194

This disclosure is intended to provide a jig that is effective in achieving both the manufacturing efficiency and quality of a laminate of electromagnetic steel sheets and a method of manufacturing a laminate using the jig.

According to an example of the present disclosure,
A first part for holding a laminate of electrical steel sheets;
A second part for supporting the first part,
The second part has a placement surface on which the plurality of first parts can be arranged side by side, and a plurality of positioning holes that open to the placement surface,
The first component includes a plate that supports the laminated body, a holding part that holds the laminated body supported by the plate from an outer peripheral side, and a convex part that protrudes downward from the plate and is inserted into the positioning hole. Is provided.

Also, according to an example of the present disclosure,
Using a first component having a plate, a holding portion provided on the plate, and a convex portion protruding downward from the plate, the holding portion holds a laminated body made of electromagnetic steel sheets from the outer peripheral side. While placing the laminate on the plate;
Using the second part having a placement surface on which the plurality of first parts can be arranged side by side and a plurality of positioning holes opened in the placement surface, the first part holding the laminate is placed on the placement surface. Arranging and inserting the convex portion into the positioning hole;
Disposing the laminate held by the first component in a heat treatment apparatus together with the first component and the second component is provided.

According to the present disclosure, it is possible to provide a jig effective for achieving both the production efficiency and the quality stability of a laminate of electromagnetic steel sheets and a method of producing a laminate using the same.

It is a top view of a stator core. It is sectional drawing of a division | segmentation core. It is a schematic diagram which shows the structure of the manufacturing system of a laminated body. It is a schematic diagram which shows schematic structure of a lamination apparatus. It is a perspective view of a jig. It is a top view which shows the state which arranged the 1st jig | tool close-packed on the 2nd jig | tool. It is a top view which shows the modification of a 1st jig | tool. It is sectional drawing of the junction part of a plate and a holding pin. It is a schematic diagram which shows the manufacturing procedure of a laminated body. It is a schematic diagram which shows the manufacturing procedure of a laminated body. It is a schematic diagram which shows the manufacturing procedure of a laminated body. It is a schematic diagram which shows the modification of a lamination apparatus. It is a schematic diagram which shows the manufacturing procedure of a laminated body. It is a schematic diagram which shows the manufacturing procedure of a laminated body. It is a schematic diagram which shows the manufacturing procedure of a laminated body. It is a schematic diagram which shows the manufacturing procedure of a laminated body. It is a schematic diagram which shows the manufacturing procedure of a laminated body.

Hereinafter, embodiments will be described in detail with reference to the drawings. In the description, the same elements or elements having the same functions are denoted by the same reference numerals, and redundant description is omitted. The laminate manufacturing system according to the present embodiment is a system for manufacturing a laminate of electromagnetic steel sheets.

[Motor core]
First, a specific example of the laminate will be shown. The laminate of electromagnetic steel sheets described in detail below is a split core 90 used for manufacturing an armature such as a motor core 80. A motor core 80 shown in FIG. 1 is a core for a stator of a motor, and includes an annular yoke 81 and a plurality of teeth 82 protruding from the inner peripheral surface of the yoke 81. A plurality of (for example, twelve) teeth 82 are arranged at equal intervals along the circumferential direction of the yoke 81. An armature coil of a motor is wound around the teeth 82.

The motor core 80 can be divided into a plurality of (for example, twelve) portions (hereinafter referred to as “divided core 90”) arranged along the circumferential direction of the yoke 81. The split core 90 includes an arc-shaped split yoke 91 extending in the circumferential direction, a protrusion 92 protruding from the inner peripheral surface of the split yoke 91 (the surface serving as the inner peripheral surface of the yoke 81), and the tip of the protrusion 92. And a flange portion 93 provided at a portion (an end portion on the opposite side of the divided yoke 91). The divided yoke 91 constitutes a yoke 81, and the protruding portion 92 and the flange portion 93 constitute a tooth 82. The protruding portion 92 is located between both end portions of the divided yoke 91 in the circumferential direction (circumferential direction of the yoke 81). In other words, the divided yoke 91 extends from the base end portion of the protruding portion 92 to both sides in the circumferential direction.

As shown in FIG. 2, the split core 90 is a laminated body in which the core pieces 94 are stacked in the direction of the central axis CL of the split yoke 91 (the central axis CL of the yoke 81). When split cores 90 formed by stacking the iron core pieces 94 are combined, a motor core 80 is formed. This motor core 80 can also be called a laminated body. The core pieces 94 are joined together by caulking or welding.

[Laminate production system]
A laminate manufacturing system 1 shown in FIG. 3 is a system for manufacturing a motor core 80 (an example of a laminate). The laminated body manufacturing system 1 includes a laminated part 2, a heat treatment part 3, and a jig 100.

(Laminated part)
The stacking unit 2 includes a stacking device 10 that forms the split core 90 and a packing area A1 for setting the split core 90 formed by the stacking device 10 on the jig 100. As shown in FIG. 4, the stacking apparatus 10 includes a punching die 11, a cylinder 12, a discharge stage 13, and a pusher 14.

The punching die 11 punches the iron core pieces 94 from the electromagnetic steel sheet MS and sequentially laminates them to form the split core 90. For example, the punching die 11 includes a die 15 and a punch 16.

The die 15 has a support surface 15a that supports the electromagnetic steel sheet MS, and an accommodation hole 15b that opens to the support surface 15a. The accommodation hole 15b accommodates the core piece 94 punched from the electromagnetic steel plate MS.

The punch 16 is driven up and down by, for example, a hydraulic press (not shown). The punch 16 punches out the iron core piece 94 from the electromagnetic steel sheet MS and pushes the iron core piece 94 into the accommodation hole 15b. Furthermore, the punch 16 joins the core piece 94 already accommodated in the accommodation hole 15b and the newly punched core piece 94 by caulking or the like. In this way, the split core 90 is formed by repeatedly punching and laminating the iron core pieces 94.

The discharge stage 13 is provided below the punching die 11. The discharge stage 13 is used for discharging the split core 90 formed by the punching die 11.

The cylinder 12 is driven by a linear actuator or the like (not shown), for example, and has a first height for supporting the iron core piece 94 in the accommodation hole 15 b and a second height for discharging the divided core 90 to the discharge stage 13. Go up and down between. The first height is, for example, a height at which the upper surface of the cylinder 12 is positioned on the lower surface of the die 15 (the lower end of the accommodation hole 15b). When the cylinder 12 is positioned at the first height, the punched core piece 94 is accommodated in a space formed by the upper surface of the cylinder 12 and the accommodation hole 15b of the die 15. The second height is, for example, a height at which the upper surface of the cylinder 12 is flush with the upper surface of the discharge stage 13.

The pusher 14 moves the split core 90 from the cylinder 12 to the discharge stage 13 in a state where the cylinder 12 is at the second height.

Note that the configuration of the stacking apparatus 10 described above is merely an example, and the stacking apparatus 10 may be configured in any manner as long as a stack can be formed. For example, the stacking apparatus 10 is not necessarily configured to stack and join the iron core pieces 94 with the die 15 and the punch 16, and is separated from the die 15 and the punch 16 after the iron core piece 94 is taken out from the accommodation hole 15 b. It may be configured to be laminated and bonded by the configuration of

(Heat treatment part)
Returning to FIG. 3, the heat treatment unit 3 includes a heat treatment apparatus 20 that performs heat treatment of the divided core 90 and a take-out area A 2 for taking out the heat-treated divided core 90 from the jig 100. The heat treatment apparatus 20 includes a deoiling furnace 21, an annealing furnace 22, a cooling unit 23, a brewing furnace 24, a cooling unit 25, and a conveyor 30.

The deoiling furnace 21 (heat treatment furnace) is a heating furnace for evaporating the oil adhering to the split core 90. The annealing furnace 22 (heat treatment furnace) is a heating furnace for annealing the split core 90. The cooling unit 23 is a part for cooling the divided core 90 to a temperature suitable for brewing. The brewing furnace 24 (heat treatment furnace) is a heating furnace for forming an oxide film on the surface of the split core 90. The cooling unit 25 is a part for cooling the split core 90 to near normal temperature. The blueing treatment is one of surface treatments that impart corrosion resistance to the laminate. In this example, water vapor is imparted to the surface of the laminate to form black rust (Fe ₃ O ₄ ).

The conveyor 30 moves the jig 100 along a conveyance path that sequentially passes through the deoiling furnace 21, the annealing furnace 22, the cooling unit 23, the bluing furnace 24, and the cooling unit 25. For example, the conveyor 30 includes a circulation body 33 such as an endless chain, and a drive wheel 31 and a driven wheel 32 that circulate and drive the circulation body 33. Each part of the circulating body 33 moves along the transport path and then returns to the start position of the transport path.

Note that the configuration of the heat treatment apparatus 20 described above is merely an example, and the heat treatment apparatus 20 may be configured in any manner as long as the heat treatment apparatus 20 is configured to perform heat treatment of the stacked body. For example, the heat treatment apparatus 20 may not include any one of the deoiling furnace 21, the annealing furnace 22, and the bluing furnace 24.

(jig)
As shown in FIG. 5, the jig 100 includes a first jig 110 (an example of a first part) that holds the split core 90 and a second jig 120 (a second part of the second part) that supports the first jig 110. An example), a third jig 130 that holds the split core 90 from above, and a fourth jig 140 that holds the third jig 130 on the second jig 120.

The first jig 110 has a plate 111, a holding part 112, and a convex part 113. The plate 111 supports at least one divided core 90. The plate 111 may support a plurality of divided cores 90. The plate 111 may support a plurality of divided cores 90 stacked in the vertical direction. The plate 111 has an outer shape such as a circle, an ellipse, or a polygon, and spreads so as to face the entire lower surface of the split core 90 disposed in the lowermost layer.

Hereinafter, “up and down” in the description of the first jig 110 means up and down in a state where the plate 111 supports the plurality of divided cores 90. As will be described later, each of the plurality of divided cores 90 stacked on the plate 111 is disposed such that the iron core piece 94 follows the plate 111. Hereinafter, the description will be made on the assumption of this arrangement.

The holding unit 112 holds the plurality of divided cores 90 supported by the plate 111 from the outer peripheral side. Here, holding means that the plurality of divided cores 90 are constrained on the plate 111 while maintaining the overlapping state. Holding from the outer peripheral side means holding by a member disposed outside the outer edge of the split core 90. The holding part 112 may be configured to constrain the entire lower surface of the split core 90 disposed in the lowermost layer to the inside of the outer edge of the plate 111.

For example, the holding portion 112 includes a plurality of holding pins provided so as to protrude upward from the plate 111 and surround the plurality of divided cores 90. The holding part 112 may have three or more holding pins. As an example, the holding unit 112 includes three holding

pins

112A, 112B, and 112C.

As shown in FIGS. 5 and 6, the holding pins 112 A and 112 B are arranged so as to sandwich the protruding portion 92 between the divided yoke 91 and the flange portion 93. This restricts the movement of the split core 90 in the direction in which the holding pins 112A and 112B are arranged (hereinafter referred to as “first direction”). The holding pin 112C is positioned between the holding

pins

112A and 112B in the first direction, and is positioned so as to sandwich the split yoke 91 between the holding

pins

112A and 112B. Thereby, the movement of the split core 90 in a direction orthogonal to the first direction (hereinafter referred to as “second direction”) is also restricted.

As shown in FIG. 7A, the holding pin 112C may be disposed so as to sandwich the flange portion 93 between the holding

pins

112A and 112B. This also restricts the movement of the split core 90 in the second direction.
Further, as shown in FIG. 7B, the holding pin 112C may be omitted. In the illustrated example, the holding portion 112 is configured such that the holding

pins

112A and 112B are hooked with the split yoke 91 and the holding pins 112A and 112B and the flange portion 93 are hooked. Specifically, in the illustrated example, the holding

pins

112A and 112B are thickened. Such a holding part 112 can also regulate the movement of the split core 90 in the second direction.
Furthermore, as illustrated in FIG. 7C, the movement of the split core 90 may be regulated by fitting the outer peripheral surface of the holding pin into the concave portion of the outer shape of the split core 90. 7C includes holding

pins

112C and 112D arranged so as to sandwich the split core 90 in the second direction. A V-shaped recess 95 is formed on the outer peripheral surface of the divided yoke 91, and the holding pin 112 C is fitted into the recess 95. Further, the distal end surface of the protruding portion 92 is concavely curved to form a concave portion 96, and the holding pin 112 D is fitted into the concave portion 96. When the holding pin 112C is fitted into the recess 95 and the holding pin 112D is fitted into the recess 96, the movement of the split core 90 in the first direction is restricted. For this reason, according to the configuration of FIG. 7C, the holding

pins

112A and 112B can be omitted.

Furthermore, the holding unit 112 may not necessarily be configured to restrict the movement of the split core 90 by a plurality of holding pins. For example, the holding portion 112 may include a wall portion that protrudes upward from the plate 111 and surrounds the plurality of split cores 90. The wall may be net-like.

As shown in FIG. 8, the lower ends of the holding pins 112A, 112B, and 112C are inserted into

connection holes

111a, 111b, and 111c formed in the plate 111, respectively, and are welded to the plate 111 at the lower part of the plate 111. As shown in this example, the first jig 110 further includes a joint 114 that joins the plate 111 and the holding pins 112A, 112B, and 112C below the support surface of the plate 111 that supports the stacked body. May be. The joint 114 is, for example, a weld bead.

Note that the means for joining the holding pins 112A, 112B, 112C and the plate 111 is not necessarily limited to welding. For example, the lower ends of the holding pins 112A, 112B, and 112C may be press-fitted into the

connection holes

111a, 111b, and 111c. Moreover, the external thread formed in the lower end part of holding

112A, 112B, 112C may be screwed in the internal thread formed in

connection hole

111a, 111b, 111c, respectively. Furthermore, the holding pins 112 A, 112 B, and 112 C may be formed integrally with the plate 111.

Returning to FIG. 5, the convex portion 113 protrudes downward from the plate 111. The convex 113 is inserted into a positioning hole (described later) of the second jig 120. The second jig 120 has an arrangement surface on which the plurality of first jigs 110 can be arranged and a plurality of positioning holes that open to the arrangement surface. The positioning hole is a hole into which the above-described convex portion 113 can be inserted. The second jig 120 may further include a plurality of ventilation holes that are open on the arrangement surface and the opposite surface.

As an example, the second jig 120 has a plate-like tray 121. The tray 121 includes a rectangular arrangement surface 121a on which a plurality of first jigs 110 can be arranged, a plurality of through holes 121b, a plurality of through holes 121c, and four through holes 121d. The through

holes

121b, 121c, and 121d all open on the arrangement surface 121a.

The plurality of through holes 121b are arranged in a matrix along the long side direction and the short side direction of the arrangement surface 121a. The through hole 121b is, for example, circular, and the inner surface thereof is fitted with the convex portion 113. Of the plurality of through holes 121b, the hole into which the convex portion 113 is inserted functions as the positioning hole described above. Of the plurality of through holes 121b, the hole into which the convex portion 113 is not inserted functions as the above-described vent hole.

The plurality of through holes 121c are arranged alternately with the through holes 121b in both the long side direction and the short side direction of the arrangement surface 121a. The through hole 121c has a shape (for example, a cross shape) different from the through hole 121b, and all function as the above-described vent hole.

The four through holes 121d are located at the four corners of the arrangement surface 121a. The through hole 121d is used for connection with a fourth jig 140 described later.

Here, as shown in FIG. 6, the plurality of through-holes 121b are arranged so as to be adjacent to the adjacent plates 111 in the top view of the arrangement surface 121a even in the state where the first jigs 110 are arranged in the closest arrangement on the arrangement surface 121a. The open area R1 that does not cover the arrangement surface 121a is formed between the two.
The close-packed arrangement means that the first jig 110 has the largest number of the first jigs on the arrangement surface 121a under the condition that the convex portions 113 of the first jigs 110 are inserted into the through holes 121b and the adjacent plates 111 do not overlap each other. This means that the tool 110 is arranged. For example, when the plurality of first jigs 110 are arranged in the closest arrangement on the arrangement surface 121a, the second jigs 120 are arranged in a polygonal (for example, quadrangular or triangular) lattice shape. An open region R1 is formed between the plurality of plates 111 that are arranged side by side and form the top of the polygon. At least a part of the plurality of vent holes (the through hole 121c and the through hole 121b into which the convex portion 113 is not inserted) is located in the open region R1 in a state where the first jig 110 is arranged in the closest arrangement on the arrangement surface 121a. It is located to open.
For example, when the diameter of the circular plate 111 is D and the distance between adjacent through holes 121b is d, a plurality of through holes 121b are provided on the arrangement surface 121a so that 2d> D.

In FIG. 6, a plurality of first jigs 110 are arranged in a square lattice shape, and an open region R1 is formed between four plates 111 forming individual squares. In the region R1, one through hole 121b is completely opened, and four through holes 121b and four through holes 121c are partially opened.

Returning to FIG. 5, the third jig 130 holds the split core 90 supported by the first jig 110 from above. The third jig 130 has a pressing surface that faces the uppermost divided core 90 of each first jig 110 and a plurality of holding holes that open to the pressing surface. The plurality of holding holes accommodate upper end portions of the holding pins 112A, 112B, and 112C.

As an example, the third jig 130 has a plate-like cover 131. The cover 131 has a rectangular pressing surface 131a facing the arrangement surface 121a, a plurality of through holes 131b, and four through holes 131c. The through

holes

131b and 131c are both open to the pressing surface 131a.

The plurality of through holes 131b function as the holding holes described above. For example, the plurality of through holes 131b are provided at positions corresponding to all the holding pins 112A, 112B, and 112C, respectively. The plurality of through holes 131b may be arranged in any manner as long as they can function as holding holes. For example, each through-hole 131b may be configured such that the upper ends of the plurality of holding

pins

112A, 112B, and 112C can be inserted. For example, the plurality of through holes 131b are provided at positions corresponding to all of the first jigs 110, and each through hole 131b has a shape and size into which three holding

pins

112A, 112B, and 112C can be inserted. May be.

The fourth jig 140 has four column bodies 141 arranged at the four corners of the arrangement surface 121a and the holding surface 131a, and four collars 142 respectively mounted on the outer periphery of the four column bodies 141. . In each corner, the column 141 is inserted into the through hole 121d and the through hole 131c. The lower end of the collar 142 is in contact with the arrangement surface 121a, and the upper end of the collar 142 is in contact with the pressing surface 131a. As a result, the third jig 130 is held on the second jig 120.

The configuration of the jig 100 described above is merely an example, and the jig 100 may be configured in any manner as long as the first jig 110 and the second jig 120 are provided. For example, the jig 100 may further include a wall that surrounds the space between the second jig 120 and the third jig 130, and the wall is fixed to the collar 142 of the fourth jig 140. Also good. In addition, the jig 100 may not include the third jig 130 and the fourth jig 140.

[Method for producing laminate]
Then, the manufacturing procedure of the split core 90 is demonstrated as an example of the manufacturing method of a laminated body. In this manufacturing procedure, a plurality of divided cores 90 are arranged on the plate 111 while holding the divided cores 90 from the outer periphery side by the holding unit 112, and a first jig holding the plurality of divided cores 90. 110 is arranged on the arrangement surface 121a, the protruding portion 113 is inserted into the through hole 121b, and the plurality of divided cores 90 held by the first jig 110 are connected to the first jig 110 and the second jig 120. And disposing in the heat treatment apparatus 20.

This manufacturing procedure may further include forming the split core 90 using the laminating apparatus 10 and transporting the split core 90 from the laminating apparatus 10 side to the heat treatment apparatus 20 side. The plurality of divided cores 90 are arranged on the plate 111 before the plurality of divided cores 90 are transported from the laminating apparatus 10 side to the heat treatment apparatus 20 side. You may convey with the jig | tool 110 from the lamination apparatus 10 side to the heat processing apparatus 20 side.

The first jig 110 holding the plurality of divided cores 90 is arranged on the arrangement surface 121a, and the protrusion 113 is inserted into the through hole 121b. The plurality of split cores 90 may be transported from the laminating apparatus 10 side to the heat treatment apparatus 20 side together with the first jig 110 and the second jig 120.

Hereinafter, the manufacturing procedure of the split core 90 will be illustrated more specifically. First, as shown in FIG. 9, the split core 90 is formed using the stacking apparatus 10. For example, in the state where the cylinder 12 is at the first height (the height at which the upper surface of the cylinder 12 is located on the lower surface of the die 15), the punching 16 repeatedly punches the iron core piece 94 from the electromagnetic steel sheet MS, thereby The split core 90 is formed in 15b.

Next, as shown in FIG. 10, the cylinder 12 is lowered to the second height (the height at which the upper surface of the cylinder 12 is flush with the upper surface of the discharge stage 13), and is discharged from above the cylinder 12 by the pusher 14. The split core 90 is moved on the stage 13.

Next, as shown in FIG. 11, the split core 90 is arranged on the plate 111 while holding the split core 90 from the outer peripheral side by the holding portion 112 in a state where the iron core piece 94 is along the plate 111. . Thereafter, the arrangement of the divided cores 90 on the plate 111 is repeated, and a plurality of the divided cores 90 are arranged on the plate 111 in an overlapping manner.

In addition, the arrangement of the split core 90 on the plate 111 may be executed manually in the filling area A1 or may be automatically executed in the stacking apparatus 10. When the placement of the split core 90 on the plate 111 is automatically executed, the stacking apparatus 10 has a discharge hole 17 for discharging the split core 90 and a first portion below the discharge hole 17 as shown in FIG. You may further provide the holder 18 holding the jig | tool 110. FIG. The discharge hole 17 is provided in the discharge stage 13, for example.

When a predetermined number of split cores 90 are set on the first jig 110, the first jig 110 is set on the tray 121 of the second jig 120 in the stuffing area A1, as shown in FIG. Specifically, the first jig 110 is arranged on the arrangement surface 121a, and the convex portion 113 is inserted into the through hole 121b. Thereafter, formation of the split core 90, discharge, arrangement on the plate 111, and arrangement of the first jig 110 on the arrangement surface 121a are repeated.

When a predetermined number of first jigs 110 are set on the arrangement surface 121a, the third jig 130 is placed as shown in FIG. Specifically, the third jig is arranged such that the pressing surface 131a faces the uppermost divided core 90 of each first jig 110 and the upper ends of all the holding pins 112A, 112B, 112C enter the through holes 131b. 130 is arranged, and the third jig 130 is held on the second jig 120 by the fourth jig 140.

Next, as shown in FIG. 15, the plurality of split cores 90 set on the jig 100 are stacked together with the first jig 110, the second jig 120, the third jig 130, and the fourth jig 140. It is conveyed from the 10 side to the heat treatment apparatus 20 side. This conveyance may be performed using a conveyor or a conveyance cart, and may be performed using vehicles, such as a truck.

Next, as shown in FIG. 16, the third jig 130 and the fourth jig 140 are removed from the second jig 120, and the plurality of divided cores 90 are heat treated together with the first jig 110 and the second jig 120. 20 is arranged. The plurality of split cores 90 are sequentially conveyed to the deoiling furnace 21, the annealing furnace 22, the cooling unit 23, the brewing furnace 24, and the cooling unit 25 by the conveyor 30 together with the first jig 110 and the second jig 120. Heat treated. Thereafter, the split core 90 after the heat treatment is taken out from the first jig 110 and the second jig 120 in the take-out area A2.

Note that the second jig 120 holding the plurality of divided cores 90 may be stacked in a plurality of stages and arranged in the heat treatment apparatus 20. In this case, the fourth jig 140 may be used for connection to the upper second jig 120 without being removed from the second jig 120.

Next, as shown in FIG. 17, the jig 100 from which the split core 90 has been taken out is conveyed from the heat treatment apparatus 20 side to the laminating apparatus 10 side. For this conveyance, the same means as the conveyance of the jig 100 from the laminating apparatus 10 side to the heat treatment apparatus 20 side can be used. Thus, the manufacturing procedure of the split core 90 is completed. When returning the jig 100 to the stacking apparatus 10 side, the third jig 130 and the fourth jig 140 removed from the second jig 120 before the heat treatment are mounted on the second jig 120 again. Alternatively, the first jig 110 and the second jig 120 may be returned to the laminating apparatus 10 side without mounting the third jig 130 and the fourth jig 140. Separately from the third jig 130 and the fourth jig 140 removed from the second jig 120, the third jig 130 and the fourth jig 140 with less oil adhesion are prepared, It may be attached to the second jig 120 and returned to the laminating apparatus 10 side.

This manufacturing procedure can be appropriately changed as long as it includes arranging the plurality of split cores 90 held by the first jig 110 in the heat treatment apparatus 20 together with the first jig 110 and the second jig 120. .

For example, arranging the plurality of divided cores 90 on the plate 111 and arranging the first jig 110 holding the plurality of divided cores 90 on the arrangement surface 121a include the plurality of divided cores 90. May be performed after transporting from the laminating apparatus 10 side to the heat treatment apparatus 20 side. In this case, in order to convey the split core 90 from the laminating apparatus 10 side to the heat treatment apparatus 20 side, a jig different from the first jig 110 and the second jig 120 is required.

In addition, the plurality of divided cores 90 are arranged on the plate 111 in an overlapping manner before the plurality of divided cores 90 are transferred from the laminating apparatus 10 side to the heat treatment apparatus 20 side, and the plurality of divided cores 90 are held. Arrangement of the first jig 110 on the arrangement surface 121a may be executed after the conveyance. In this case, in order to convey the split core 90 from the laminating apparatus 10 side to the heat treatment apparatus 20 side, a jig different from the second jig 120 is required.

When the second jig 120 is not used for transporting the split core 90 from the laminating apparatus 10 side to the heat treatment apparatus 20 side, the second jig 120 can be placed on the heat treatment apparatus 20 side. 120 functions may be incorporated into the conveyor 30. Specifically, the positioning hole and the vent hole may be formed in the circulation body 33 of the conveyor 30, and the circulation body 33 may be used as the second jig.

[Effect of this embodiment]
As described above, the jig 100 includes the first jig 110 that holds the stacked body and the second jig 120 that supports the first jig 110, and the second jig 120 includes a plurality of jigs 100. The first jig 110 has an arrangement surface 121a on which the first jig 110 can be arranged and a plurality of positioning holes (through holes 121b) opened on the arrangement surface 121a. The first jig 110 includes a plate 111 that supports the stacked body, And a holding part 112 that holds the laminated body supported by the plate 111 from the outer peripheral side, and a convex part 113 that protrudes downward from the plate 111 and is inserted into the positioning hole of the second jig 120.

According to the jig 100, the first jig 110 holding the laminated body is arranged side by side on the arrangement surface 121a, so that many laminated bodies can be heat-treated together. Therefore, the manufacturing efficiency of the laminated body can be improved.

The laminate on the plate 111 is held by the holding unit 112. For this reason, when the 1st jig | tool 110 is arrange | positioned on the 2nd jig | tool 120, when the jig | tool 100 is arrange | positioned in the heat processing apparatus 20, the position shift of a laminated body is suppressed. Further, the convex portion 113 of the first jig 110 is fitted into the positioning hole of the second jig 120, so that the displacement of the first jig 110 with respect to the second jig 120 is also suppressed. For this reason, the dispersion | variation in the heat processing state resulting from the uneven distribution of the split core 90 in the jig | tool 100 is suppressed. Therefore, the quality of the laminate can be improved.

In addition, it is also possible to arrange a plurality of laminated bodies on the plate 111 in a range of a height that can be held by the holding unit 112. In this case, since a plurality of laminated bodies can be arranged together on the second jig 120, a larger number of laminated bodies can be efficiently bundled together and heat-treated. In the case where a plurality of laminated bodies are arranged on the plate 111, these are held together by the holding portion 112, so that the occurrence of defects due to the collapse of the plurality of laminated bodies is also suppressed. By suppressing the positional deviation between the stacked laminates, the pressure concentration in each laminate is suppressed, so that the occurrence of defects such as sticking (electrical conduction between the iron core pieces 94) due to the pressure concentration is also suppressed.

Thus, the jig 100 is effective in achieving both the production efficiency and quality of the laminated body of electromagnetic steel sheets. Since the holding unit 112 is configured to hold the laminate from the outer peripheral side, the laminate is held on the plate 111 even when the laminate does not have holes that can be used for positioning. can do. For this reason, it is particularly effective for manufacturing the split core 90 obtained by dividing the annular core in the circumferential direction.

The second jig 120 further includes a plurality of ventilation holes (through holes 121b and through holes 121c) that open to the arrangement surface 121a. The plurality of positioning holes are formed by the first jig 110 on the arrangement surface 121a. Even in the close-packed state, it is positioned such that an open region R1 that does not cover the placement surface 121a is formed between other adjacent plates 111, and at least some of the plurality of vent holes are open region R1. You may be located so that it may open.
At the time of heat treatment, it is desired to keep the whole of the plurality of laminated bodies held by the jig 100 at a uniform temperature in order to perform uniform heat treatment. Since the second jig 120 is provided with a plurality of vent holes 121b and 121c, it is possible to promote convection in the heat treatment apparatus and guide high-temperature gas to the laminated body provided in the jig 100. . For this reason, it is easy to keep the whole of the plurality of stacked bodies held by the jig 100 at a uniform temperature. Moreover, water vapor is made to adhere to a laminated body for a brewing process. Also during this bluing process, water vapor can be attached to the laminated body provided in the jig 100 by the vent holes 121b and 121c, and a uniform bluing process can be performed on a plurality of laminated bodies.

The holding portion 112 may include a plurality of holding pins that protrude upward from the plate 111. The heat capacity of the holding unit 112 can be reduced, and the influence of the holding unit 112 on the heat treatment state can be suppressed. Moreover, it is preferable that this holding pin protrudes upward from the plate 111, and is provided so that the displacement to the side of a laminated body may be controlled. Moreover, it is preferable that this holding pin is provided so that it may contact | abut to the side edge of a laminated body, and the displacement to the side of a laminated body may be controlled.

When the heat treatment is performed, the plate material becomes hot. The edge of the iron core piece 94 that has become hot may be deformed so as to hang down due to gravity. However, according to the manufacturing method described above, when a plurality of iron core pieces 94 (an example of a plate material) are stacked to form a laminated body, the holding part 112 restricts the lateral movement of the iron core pieces 94 and has the same shape. Pieces 94 are stacked. Since the entire lower surface of the iron core piece 94 is supported by the upper surface of the iron core piece 94 positioned therebelow, the iron core piece 94 is not easily deformed during heat treatment. For this reason, a laminated body with high shape accuracy can be formed. Note that the plate 111 is made larger than the iron core piece 94 so that the entire lower surface of the iron core piece 94 located at the bottom is supported by the upper surface of the plate 111. In addition, if it is the same shape, you may pile up the core piece 94 from which thickness differs mutually. For example, the first jig 110 is used to stack another divided core having four 0.5 mm thick core pieces stacked on one split core having five 0.3 mm thick core pieces stacked. May be.

The first jig 110 may further include a joining portion 114 that joins the plate 111 and the holding portion 112 below the support surface of the plate 111 that supports the stacked body. In this case, by arranging the joint 114 below the support surface of the plate 111, the smoothness of the support surface of the plate 111 can be improved, and pressure concentration in each laminate on the plate 111 can be further suppressed.

The plate 111 may be spread so as to face the entire lower surface of the split core 90 arranged in the lowermost layer. In this case, the pressure concentration can be more reliably suppressed by supporting the split core 90 on a wider surface.

The jig 100 may further include a third jig 130 that holds the stacked body supported by the first jig 110 from above. The third jig 130 has a holding surface 131a facing the uppermost divided core 90 of each first jig 110, and a plurality of holdings that open to the holding surface 131a and receive the upper ends of the holding pins 112A, 112B, and 112C. Hole (through hole 131b). In this case, the laminate can be protected more reliably. Further, in addition to the convex portion 113 of the first jig 110 being fitted into the positioning hole of the second jig 120, the upper end portions of the holding pins 112A, 112B, and 112C are fitted into the holding holes, whereby the arrangement surface The positional deviation of the first jig 110 including the inclination with respect to 121a can be more reliably suppressed.
When the jig 100 is carried into the heat treatment apparatus, vertical vibrations act on the laminate in addition to lateral vibrations. The holding portion 112 can suppress side vibrations of the iron core piece 94 and the laminated body, and the third jig 130 can prevent the iron core piece 94 and the laminated body from coming out of the holding portion 112 upward. .

The jig 100 may further include a fourth jig 140 that holds the third jig 130 on the second jig 120. In this case, the inclination of the first jig 110 with respect to the arrangement surface 121a can be more reliably suppressed.

In the manufacturing procedure of the laminated body using the jig 100, the plurality of laminated bodies are arranged on the plate 111 before being transferred from the laminating apparatus 10 side to the heat treatment apparatus 20 side. The plurality of laminated bodies may be conveyed together with the first jig 110 from the laminating apparatus 10 side to the heat treatment apparatus 20 side. In this case, the number of jigs for manufacturing the laminate can be reduced by utilizing the first jig 110 for transporting the laminate. Moreover, the trouble of refilling the laminate from the jig for transporting the laminate to the jig 100 can be reduced. Further, since oil and the like adhering to the first jig 110 are removed each time the heat treatment is performed, it is possible to reduce the trouble of cleaning the jig for transporting the laminate. Therefore, the manufacturing efficiency of the laminate can be further improved.

Alternatively, the first jig 110 holding a plurality of laminated bodies may be arranged on the arrangement surface 121a and the protrusion 113 may be inserted into the positioning hole of the second jig 120. The plurality of laminated bodies may be transported together with the first jig 110 and the second jig 120 from the lamination apparatus 10 side to the heat treatment apparatus 20 side before being conveyed to the heat treatment apparatus 20 side. In this case, the number of jigs for manufacturing the laminate can be further reduced by using both the first jig 110 and the second jig 120 for transporting the laminate. Further, it is possible to further reduce the trouble of refilling the laminate from the jig for transporting the laminate to the jig 100. Therefore, the manufacturing efficiency of the laminate can be further improved.

As mentioned above, although embodiment was described, this indication is not necessarily limited to embodiment mentioned above, and various changes are possible in the range which does not deviate from the gist. The laminated body manufacturing system 1 can be applied to the production of any object as long as it is a laminated body of electromagnetic steel sheets. For example, the laminate manufacturing system 1 can be applied to the manufacture of an annular motor core 80 that cannot be separated into a plurality of divided cores 90, and can also be applied to the manufacture of a rotor core as well as a stator. .

This application is based on a Japanese patent application (Japanese Patent Application No. 2017-104873) filed on May 26, 2017, the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 90 ... Split core (laminated body), 94 ... Iron core piece, 100 ... Jig, 10 ... Laminating apparatus, 20 ... Heat processing apparatus, 110 ... First jig, 120 ... Second jig, 111 ... Plate, 112 ... Holding , 113 ... convex part, 112A, 112B, 112C ... holding pin, 114 ... joint part, 121a ... arrangement surface, 121b ... through hole (positioning hole, air hole), 121c ... through hole (air hole), R1 ... open region.

Claims

A first part for holding a laminate of electrical steel sheets;
A second part for supporting the first part,
The second part has a placement surface on which the plurality of first parts can be arranged side by side, and a plurality of positioning holes that open to the placement surface,
The first component includes a plate that supports the laminated body, a holding part that holds the laminated body supported by the plate from an outer peripheral side, and a convex part that protrudes downward from the plate and is inserted into the positioning hole. And a jig having.
The second part further includes a plurality of vent holes that open to the placement surface,
The plurality of positioning holes are formed so that an open region that does not cover the placement surface is formed between the plate and the other adjacent plate even in the state where the first parts are arranged in a close-packed manner on the placement surface. Position to,
The jig according to claim 1, wherein at least a part of the plurality of vent holes is positioned so as to open to the open region.
The jig according to claim 1 or 2, wherein the holding portion includes a plurality of holding pins that protrude upward from the plate and are provided so as to restrict a lateral displacement of the stacked body.
The jig according to claim 3, wherein the holding pin is provided so as to abut on a side edge of the laminated body to regulate a lateral displacement of the laminated body.
4. The jig according to claim 3, wherein the first component further includes a joining portion that joins the plate and the holding pin below a support surface of the plate that supports the laminated body.
Using a first part having a plate, a holding part provided on the plate, and a convex part protruding downward from the plate, while holding the laminate of electromagnetic steel sheets from the outer peripheral side by the holding part Placing the laminate on the plate;
Using the second part having a placement surface on which the plurality of first parts can be arranged side by side and a plurality of positioning holes opened in the placement surface, the first part holding the laminate is placed on the placement surface. Arranging and inserting the convex portion into the positioning hole;
Arranging the laminated body held by the first part in a heat treatment apparatus together with the first part and the second part.
Forming the laminate using a laminating apparatus;
Further conveying the laminate from the laminating apparatus side to the heat treatment apparatus side,
The stack is placed on the plate before the stack is transported from the stacking apparatus side to the heat treatment apparatus side, and the stack is loaded together with the first component from the stacking apparatus side to the heat treatment. The manufacturing method of the laminated body of Claim 6 conveyed to the apparatus side.
The first part holding the laminated body is arranged on the arrangement surface, and the convex portion is inserted into the positioning hole, or before the laminated body is conveyed from the laminating apparatus side to the heat treatment apparatus side. The manufacturing method of the laminated body of Claim 7 which carries out and conveys the said laminated body with the said 1st component and said 2nd component from the said lamination apparatus side to the said heat processing apparatus side.
The method for manufacturing a laminate according to claim 7, wherein when the plurality of plate members are laminated to form the laminate, the plate members having the same shape are stacked while restricting lateral movement of the plate member by the holding portion.