JP7292453B1 - Adhesive application equipment - Google Patents

Abstract

Kind Code: A1 To provide an adhesive application facility that is easy to maintain. Kind Code: A1 Adhesive application equipment 35 for applying an adhesive to strip-shaped thin steel plates in order to laminate iron cores punched out into a predetermined shape from strip-shaped thin steel plates by dies 31 and 33 and adhere them to each other. The application equipment 35 is arranged in front of the dies 31, 33 or between the dies 31, 33 and the following dies 32, 34 in the feeding direction of the strip-shaped thin steel plate. It is possible to pull out in a direction perpendicular to the direction. [Selection drawing] Fig. 10

Description

The present invention relates to adhesive application equipment.

TECHNICAL FIELD The present invention relates to adhesive application equipment for applying an adhesive to strip-shaped thin steel plates.

Laminated cores for rotary electric machines are generally manufactured by using hoop materials (strip-shaped thin steel sheets) of electromagnetic steel sheets as raw materials and sequentially feeding the strip-shaped thin steel sheets to a mold device. In the mold device, predetermined punching processes such as pilot holes, slots, inner diameter teeth, etc. are sequentially performed on the strip-shaped thin steel plate to continuously form core thin plates, and after punching, the core thin plates are laminated in a predetermined number. The laminated core is manufactured by pressing and fixing. There is also a lamination caulking method in which crimping and crimping are formed in each core lamination, and crimped and joined by crimping during lamination, and a lamination welding method in which the core lamination is joined by laser welding or the like after lamination. However, since deterioration of the magnetic properties of the bonded parts is unlikely to occur, the lamination bonding method is widely used, in which adhesive is applied to the surface of the strip-shaped thin steel plate in the mold device, and the core thin plates are laminated and bonded at the same time as punching. Proposed.

For example, in Patent Document 1, as shown in FIG. 15, a plurality of dies 61 arranged along the transfer direction of the thin steel plate SS that is intermittently transferred, and the thin steel plate SS attached to the plurality of dies 61 and a plurality of punches 63 for pressing the thin steel plate SS pressed against the plurality of dies 61 by the stripper 62. An outer shape punch 64 is disposed as a punch arranged at a position, and the outer shape punch 64 punches out a metal piece having a predetermined planar shape from the thin steel plate SS and separates it from the thin steel plate, An apparatus 66 for manufacturing a laminate of metal pieces configured to laminate the metal pieces in a die 65 corresponding to the outer shape punch 64 , wherein the outer shape punch 64 among the plurality of dies 61 At a position upstream of the die 67 corresponding to the adhesive application unit 68, the adhesive application unit 68 includes an adhesive storage chamber 69 for storing adhesive and the adhesive storage chamber a coating head 70 for coating the adhesive supplied from 69 onto predetermined positions on the lower surface of the thin steel plate SS in an adhesive coating pattern corresponding to the planar shape expected as the metal piece; and a head presser 71 for pressing the coating head 70 from the back surface of the coating head 70 when the adhesive is coated on the thin steel plate SS, the coating head 70 being made of a porous resin, The surface of the coating head 70 has a shape that is substantially the same as the adhesive coating pattern when viewed from above, and the adhesive exuded from the surface when the thin steel plate SS comes into contact with the thin steel plate. A transfer portion is provided as a portion to be transferred to the SS, and the head presser 71 has a presser surface having a presser pattern corresponding to the adhesive application pattern when viewed from above. , and is configured to abut on the back surface of the coating head 70 at a position and attitude corresponding to the transfer section.

In addition, as shown in FIG. 16, Patent Document 2 discloses a second metal plate that is configured to perform a predetermined process other than an outline punching process on a strip-shaped metal plate that is intermittently sent out sequentially in a predetermined direction. a mold 81, a supply unit 82 configured to supply an adhesive to a predetermined portion of the metal plate processed by the first mold 81, and the adhesive is supplied by the supply unit 82. a second mold 83 configured to form a punched member having a predetermined shape to which an adhesive is applied by performing an outline punching process on the supplied metal plate; At least one first drive mechanism 84 configured to individually or integrally drive the mold 81, the supply unit 82 and the second mold 83, and the first mold The mold 81, the supply unit 82, and the second mold 83 are separate bodies, and are arranged in this order from the upstream side where the metal plate is sent out to the downstream side. The supply unit 82 has a function of supplying an adhesive to a predetermined portion of the electromagnetic steel sheet ES after being processed by the second mold 83 on the side, and as shown in FIG. , a bottom plate 85, an elevator 86, a supply plate 87 having a function of supplying adhesive to the electromagnetic steel sheets ES, a set of guide rails 88, and a set of guide rails 88 among the electromagnetic steel sheets ES. A manufacturing apparatus for a laminated core is disclosed, which includes a pressing plate 89 (pressing member) configured to be able to hold the region together with a supply plate 87 and a top plate 90 .

Japanese Patent Application Laid-Open No. 2021-035242 JP 2018-129981 A

However, in the apparatus for manufacturing a laminate of metal pieces described in Patent Document 1, since the plurality of dies 61 and the adhesive application unit 68 are separated from each other, there is a problem that the apparatus as a whole becomes large. In addition, since the operation of pressing the thin steel plate SS toward the adhesive application unit 68 is performed by the stripper 62, it is difficult to access the upper portion of the adhesive application unit 68 for maintenance. Since the stripper 62 cannot be easily removed even if maintenance of the adhesive application unit 68 is attempted, the adhesive application unit 68 is removed, or the entire upper mold 72 is raised to a position where maintenance can be performed, and the adhesive discharge hole is opened. It is necessary to visually check the surroundings, which is very complicated and time-consuming. Because the stroke of the mold is usually about 20 to 30 mm, it is impossible to visually check the nozzle for discharging the adhesive from between the stripper 62 and the adhesive application unit 68, or to maintain the nozzle.

Further, the supply unit 82 of the laminated core manufacturing apparatus described in Patent Document 2 is a unit in which a pressing plate 89 for pressing the electromagnetic steel sheets ES and equipment for supplying adhesive are integrated. For maintenance, it is necessary to remove the pressing plate 89 after removing the supply unit 82 from the overall apparatus, which is very complicated and time-consuming.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an adhesive application facility that is easy to maintain and improves upon the above problems of the prior art.

In order to solve the above-mentioned problems, the adhesive application equipment of the first invention of the present application applies an adhesive to the strip-shaped thin steel plates in order to laminate iron cores punched into a predetermined shape from strip-shaped thin steel plates with a die and adhere them to each other. An adhesive application equipment, the adhesive application equipment is arranged immediately before the mold or between the mold and the subsequent mold in the feeding direction of the strip-shaped thin steel plate, and the adhesive application equipment is arranged on the strip-shaped thin steel plate It is characterized in that it can be pulled out in a direction perpendicular to the feeding direction of.

The second invention of the present application is the first invention of the present application, which has a pressing plate that presses the thin steel strip toward the lower die, and the pressing plate can be pulled out in a direction perpendicular to the feeding direction of the thin steel strip. It is characterized by

The third invention of the present application is characterized in that, in the first invention or the second invention of the present application, the adhesive applying equipment and the mold are in close contact with each other.

The fourth invention of the present application is characterized in that, in the second or third invention of the present application, the pressure plate and the mold are in close contact with each other.

The fifth invention of the present application is characterized in that, in any one of the first invention to the fourth invention of the present application, the syringe for discharging the adhesive, which the adhesive application equipment has, can be attached and detached in an upward direction.

According to the first invention of the present application, the adhesive application equipment can be taken out separately from the mold, so that the driving part of the upper mold can be moved upward, and the work space can be used between the adhesive application equipment and the mold. The maintenance and inspection of the adhesive application equipment can be easily performed without providing a space for the adhesive. Since the adhesive applying equipment is separate from the mold, it is possible to reduce the size of the mold.

According to the second invention of the present application, by pulling out the pressing plate, maintenance and inspection of the adhesive application equipment can be performed from above the adhesive application equipment without pulling out the adhesive application equipment.

According to the third invention of the present application, since there is no need to provide a dedicated guide post to align the adhesive application equipment and the strip-shaped thin steel plate in the feed direction, it is possible to reduce the size of the mold. In addition, since maintenance can be performed from above the adhesive application equipment or the adhesive application equipment can be taken out for maintenance, there is no need to provide a work space between the adhesive application equipment and the mold. Positioning of the adhesive applying equipment in the direction perpendicular to the feeding direction of the strip-shaped thin steel plate can be achieved by installing a positioning block at a predetermined position, and strict positioning as required for the punching die is not required.

According to the fourth invention of the present application, since there is no need to provide a dedicated guide post to align the adhesive application equipment and the pressing plate, it is possible to reduce the size of the mold.

According to the fifth invention of the present application, maintenance of the inside of the syringe and the adhesive supply path in the adhesive application equipment can be performed by removing the pressure plate and the syringe without taking out the adhesive application equipment.

FIG. 1 is a schematic configuration diagram of an embodiment of a laminated core manufacturing apparatus including adhesive application equipment and equipment before and after the adhesive application equipment. 2 is a perspective view of one embodiment of an adhesive application facility; FIG. FIG. 3 is a plan view of one embodiment of the adhesive application equipment. FIG. 4 is a side view of one embodiment of an adhesive application facility; FIG. 5 is a side view of FIG. 4 with some components removed. FIG. 6 is a front view of one embodiment of the adhesive application equipment. FIG. 7 is a front view of FIG. 6 with some constituent members removed. FIG. 8 is a plan view showing one embodiment of an adhesive flow path in an adhesive application facility. FIG. 9 is a plan view showing another embodiment of the adhesive flow path in the adhesive application equipment. FIG. 10 is a schematic configuration diagram of one embodiment of equipment including the adhesive application equipment of the present invention. 11(a), (b), and (c) are diagrams for explaining the operation of the adhesive application equipment of the present invention. FIG. 12 is a perspective view of another embodiment of the adhesive application equipment of the present invention; FIG. 13 is a schematic configuration diagram of another embodiment of the adhesive application equipment of the present invention. FIG. 14 is a schematic configuration diagram of another embodiment of equipment including the adhesive application equipment of the present invention. FIG. 15 is a diagram for explaining a manufacturing apparatus for a metal piece laminate described in Patent Document 1. As shown in FIG. FIG. 16 is a schematic cross-sectional view showing a punching device described in Patent Document 2. As shown in FIG. FIG. 17 is a perspective view showing a supply unit of the adhesive supply device described in Patent Document 2. FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings, but various modifications and modifications are possible without departing from the technical scope of the present invention.

FIG. 1 is a schematic configuration diagram of an embodiment of a laminated core manufacturing apparatus including adhesive application equipment and equipment before and after the adhesive application equipment. In FIG. 1, 1 is a coil material around which a strip-shaped thin steel plate 2 is wound, 3 is an inner adhesive applicator, 4 is an outer adhesive applicator, 5 is an elevating means for the inner adhesive applicator 3, and 6 is an outer adhesive. An elevating means for the coating device 4 , an upper mold 7 , a lower mold 8 , and mounts 9 a and 9 b for the adhesive coating equipment including the inner adhesive coating device 3 and the outer adhesive coating device 4 . The inner adhesive application device 3 or the outer adhesive application device 4 can be raised and lowered independently by lifting means 5 and 6, respectively. As shown in FIG. 1, the inner adhesive application device 3 and the outer adhesive application device 4 are installed immediately before the upper and lower molds. After adhesive is applied to the lower surface of the strip-shaped thin steel plate 2 sent out from the coil material 1 by the inner adhesive coating device 3 and the outer adhesive coating device 4, the strip-shaped thin steel plate 2 is separated into an upper mold 7 and a lower mold 8. , and if necessary, the material is punched into a predetermined shape by the subsequent upper and lower dies, and sent in the arrow A direction.
Laminated iron cores for rotary electric machines include a stator and a rotor. can be done. In addition, depending on the type and application of the rotating electric machine, a part of the core piece, for example, the tooth part of the stator, the back yoke part of the stator (outer ring part), the rib part of the rotor (thin frame part around the punched hole) While it may be applied, it can also be applied over the entire core piece, along the contour, including its details.

2 is a perspective view of one embodiment of an adhesive application facility; FIG. In FIG. 2 , 10 is an annular groove-shaped application portion of the inner adhesive application device 3 , and 11 is an arc-shaped groove-shaped application portion of the outer adhesive application device 4 . The annular groove-shaped application portion 10, the inner circular portion 10a, and the outer annular portion 10b can be integrally moved up and down by lifting means, which will be described later. The arcuate groove-shaped application portion 11 can be moved up and down by a lifting means different from that for the inner side. A reference numeral 12 denotes a plurality of sensors for sensing whether or not adhesive is applied to the strip-shaped thin steel plate. Reference numeral 13 denotes an electromagnetic valve for controlling the elevating operation of the elevating means of the inner adhesive application device and the outer adhesive application device. 14 is a cartridge heater for raising the temperature of the adhesive. Reference numeral 15 denotes a temperature sensor for sensing the temperature of the inner adhesive application device 3 including the annular groove-shaped application portion 10, the inner circular portion 10a and the outer annular portion 10b, and 16 the arc-shaped groove-shaped application portion. 11 is a temperature sensor for sensing the temperature of the outer adhesive applicator 4 . Reference numeral 17 denotes an adhesive supply port for supplying adhesive to the annular groove-shaped application portion 10 of the inner adhesive application device 3; is an adhesive supply port for supplying the These adhesive supply ports 17 and 18 are removable. The adhesive supplied from the adhesive supply port 17 is discharged from the adhesive discharge holes 26 (see FIG. 3) around the circumference, and the adhesive supplied from the adhesive supply port 18 is discharged from the adhesive discharge holes 27 (see FIG. 3) around the circumference. (See FIG. 3).

FIG. 4 is a side view of one embodiment of an adhesive application facility; Reference numeral 19 denotes a shock absorber including an arcuate groove-shaped applicator 11 for absorbing the impact caused by the upward and downward movement of the outer adhesive application device 4; 20, an annular groove-shaped applicator 10 and an inner circular portion 10a; and a shock absorber for absorbing the shock caused by the upward and downward movement of the inner adhesive application device 3 including the outer annular portion 10b.

FIG. 6 is a front view of one embodiment of the adhesive application equipment. Reference numeral 21 denotes an air cylinder for lifting and lowering the outer adhesive application device 4 including the arc-shaped groove-shaped application portion 11; 22, an annular groove-shaped application portion 10, an inner circular portion 10a, and an outer annular portion; An air cylinder for raising and lowering the inner adhesive application device 3 including 10b. Reference numeral 23 denotes sensors for sensing the upper and lower limits of the air cylinder 21; 24, sensors for sensing the upper and lower limits of the air cylinder 22; A plurality of each of the air cylinders 21 and the air cylinders 22 are provided.

FIG. 8 is a plan view showing an embodiment of the adhesive flow path in the adhesive application equipment, in which the width d of the flow path 25 is the same over the entire length, and through this flow path 25, the 3, the adhesive is discharged from adhesive discharge holes 26 and 27 extending over the entire circumference of the annular groove-shaped application portion 10 and the arc-shaped groove-shaped application portion 11, respectively. FIG. 9 is a plan view showing another embodiment of the adhesive flow path in the adhesive application equipment, in which the width w of the flow path 28 gradually decreases toward the tip. When the length of the channel is relatively long, it is advantageous for the adhesive to be delivered to the tip if the width of the channel decreases toward the tip. Adhesive is supplied to either channel 25 or 28 from adhesive supply ports 17 and 18 shown in FIG. In FIG. 3, the annular groove-shaped application portion 10 and the arc-shaped groove-shaped application portion 11 are positioned slightly recessed (separated inward) from the horizontal plane. When the annular groove-shaped application portion 10 and the arc-shaped groove-shaped application portion 11 are recessed in this manner, the adhesive discharged from the adhesive discharge holes 26 and 27 via the flow path 25 or 28 is The advantage is that a substantially constant amount of adhesive, which is not immediately applied to the lower surface of the thin steel plate (see reference numeral 2 in FIG. 1) and rises above the adhesive discharge holes 26 and 27, can be applied to the lower surface of the strip-shaped thin steel plate. There is Further, the recessed recesses do not necessarily have to be recessed to a uniform depth in the depth direction along the circumference. good too.

A method of applying an adhesive to a strip-shaped thin steel plate using the adhesive application equipment configured as described above will be described.
In FIG. 1, the adhesive is applied to the strip-shaped thin steel plate without interruption. Adhesive is applied to the strip-shaped thin steel plate 2 synchronously. That is, as shown in FIG. 1, at timings other than punching, the strip-shaped thin steel plate 2, the upper surface of the inner adhesive application device 3, the upper surface of the outer adhesive application device 4, the upper surfaces of the mounts 9a and 9b, and the lower mold 8 A predetermined gap (about several millimeters) is provided between the upper surface of the . Then, in FIG. 1, at the timing when the strip-shaped thin steel plate 2 is punched into a predetermined shape, the upper die 7 descends toward the lower die 8 so that the strip-shaped thin steel plate 2 is pressed toward the lower die 8 side. be. Since the inner adhesive coating device 3 and the outer adhesive coating device 4 can be moved up and down independently of each other, the lower surface of the strip-shaped thin steel plate 2 can be moved by either the inner adhesive coating device 3 or the outer adhesive coating device 4. can be brought into contact with the upper surface of the Since the adhesive is always supplied to the inner adhesive coating device 3 and the outer adhesive coating device 4 at a predetermined pressure from a tank (not shown) in which the adhesive is stored, the lower surface of the strip-shaped thin steel plate 2 is can be applied with adhesive. In FIG. 1, the inner adhesive applicator 3 and the outer adhesive applicator 4 are located below the strip-shaped thin steel plate 2, but the inner adhesive applicator 3 and the outer adhesive applicator 4 are located below the strip-shaped thin steel plate 2. It can also be provided on the upper side. The inner adhesive application device 3 and the outer adhesive application device 4 can be provided above or below the strip-shaped thin steel plate 2 in consideration of additional conditions such as interference with other equipment and equipment costs.

After the adhesive is applied to the lower surface of the strip-shaped thin steel plate 2 as described above, the strip-shaped thin steel plate 2 is divided into the upper mold 7 and the lower mold 8, and if necessary, the following upper mold and lower mold. , and the iron core obtained by punching into a predetermined shape is stacked in the lower die 8 or the succeeding lower die. When the number of laminated cores reaches a predetermined number, they are ejected from the lower mold 8 or the succeeding lower mold, and the ejected laminated cores are assembled after being subjected to a predetermined post-treatment such as heating. For example, in FIG. 1, when the upper die 7 is lowered toward the lower die 8 and the strip-shaped thin steel plate 2 is punched into a predetermined shape, only the inner adhesive application device 3 is raised to press the lower surface of the strip-shaped thin steel plate 2. This portion is punched out into a predetermined shape by an upper die 7 and a lower die 8 and laminated in the lower die 8 . Then, in the upper mold and the lower mold that follow the upper mold 7 and the lower mold 8, the upper mold is lowered toward the lower mold, and at the timing when the strip-shaped thin steel plate 2 is punched into a predetermined shape, the outer adhesive is Only the applicator 4 is lifted to apply the adhesive to the lower surface of the strip-shaped thin steel plate 2 by the outer adhesive applicator 4, and the upper and lower dies following the upper and lower dies 7 and 8 are applied to this portion. , it is punched into a predetermined shape and laminated in the lower mold.

As described above, the adhesive supplied at a predetermined pressure from the tank (not shown) in which the adhesive is stored reaches the adhesive supply ports 17 and 18 shown in FIG. The lower surface of the strip-shaped thin steel plate is coated from the discharge holes 26 extending over the entire circumference of the annular groove-shaped application portion 10 and the discharge holes 27 extending over the circumference of the arc-shaped groove-shaped application portion 11 of the outer adhesive application device 4 . The annular groove-shaped application portion 10, the inner circular portion 10a, and the outer annular portion 10b can be integrally moved up and down by lifting means described later, and the arc-shaped groove-shaped application portion 11 is It is possible to move up and down by a lifting means different from that for the inner side. In this way, the inner adhesive applicator 3 and the outer adhesive applicator 4 can be incorporated into one piece of equipment, and each can be moved up and down independently. Not only can the size of the equipment be reduced, but the overall equipment configuration can be simplified, and equipment costs can be greatly reduced.

Specifically, the annular grooved application portion 10, the inner circular portion 10a, and the outer annular portion 10b of the inner adhesive application device 3 can be moved up and down by an air cylinder 22 shown in FIG. , the arcuate groove-shaped coating portion 11 of the outer adhesive coating device 4 can be moved up and down by an air cylinder 21 shown in FIG.

By the way, these recessed groove-shaped application portions are formed so that the adhesive discharge hole is at a predetermined distance from the upper surface of the adhesive application device, and this has the effect described later. When the adhesive applicator rises and the lower surface of the strip-shaped thin steel plate 2 abuts against the upper surface of the adhesive applicator, the adhesive discharged from the adhesive discharge holes 26 and 27 and rises up is applied to the lower surface of the strip-shaped thin steel plate 2. However, if there is an error in the upward movement of the adhesive applicator, the amount of adhesive applied may vary. However, if the adhesive discharge holes 26 and 27 are fixed at a predetermined distance from the upper surface of the adhesive application device, when the strip-shaped thin steel plate 2 is pressed toward the lower die 8, the strip-shaped thin steel plate 2 is pressed against the upper surface of the adhesive application device, and the distance between the lower surface of the strip-shaped thin steel plate 2 and the adhesive discharge holes 26 and 27 can be kept at a predetermined distance. Even if the surface of the strip-shaped thin steel plate 2 is not completely smooth, the strip-shaped thin steel plate 2 is pressed toward the lower mold 8 regardless of the surface shape of the strip-shaped thin steel plate 2, and the strip-shaped thin steel plate is formed. 2 is pressed against the upper surface of the adhesive application device, the distance between the lower surface of the strip-shaped thin steel plate 2 and the adhesive discharge holes 26 and 27 can be kept at a predetermined distance. When a plurality of adhesive discharge holes 26 or 27 are in communication, there is an advantage that the amount of adhesive applied to the strip-shaped thin steel plate can be made uniform. If the adhesive is not applied to the thin steel strip 2 by a plurality of adhesive application devices at the same time, the thin steel strip 2 may be moved up and down by an air cylinder 21 or 22 and a lift pin (not shown).

The operation of the air cylinders 21 and 22 is controlled by the electromagnetic valve 13 shown in FIG. 2, and the upper and lower limits of the up/down movement of the air cylinders are sensed by sensors 23 and 24 shown in FIG. , and 20, it is possible to reduce the impact on each facility caused by these up-and-down operations, and shorten the time for convergence of the vibration due to the impact.

Further, as shown in FIG. 2, a plurality of sensors 12 are provided for sensing whether or not the adhesive has been applied to the thin steel strip. Therefore, for example, if there is a portion where the adhesive is not applied to the strip-shaped thin steel plate, the information sensed by the sensors 12 is fed back to a tank (not shown) in which the adhesive is stored, so that the inner adhesive is It is possible to interrupt the supply of adhesive to the applicator 3 and the outer adhesive applicator 4 and take necessary measures such as inspection and repair.

In FIG. 2, a cartridge heater 14 for increasing the temperature of the adhesive is connected to a power source (not shown). The adhesive can be stably discharged from the adhesive discharge holes 26 and 27 shown. Moreover, since the temperature sensors 15 and 16 are provided, an abnormal temperature rise in the equipment can be detected, and the number of operating cartridge heaters 14 can be adjusted as necessary. Since the inner adhesive coating device 3 and the outer adhesive coating device 4 are provided outside the upper mold 7 and the lower mold 8, the temperature rise by the cartridge heater 14 affects the mold device, and vice versa. Furthermore, temperature changes in the mold system do not affect the fluidity of the adhesive.

Adhesives that can be used in adhesive application equipment include heat-curable epoxy and acrylic resins, moisture-curable cyanoacrylate and silicone rubber resins, and hardener-mixed epoxy and silicone resins. Examples include rubber-based and acrylic-based resins, anaerobic-curable acrylic-based resins, and ultraviolet-curable epoxy-based and acrylic-based resins. The diameter of the discharge port is about 1 to 2 mm), so it is necessary to periodically check the discharge hole for clogging of the adhesive and clean the flow path that supplies the adhesive to the discharge hole. . For example, major maintenance work for adhesive application equipment is as follows.

[Main maintenance work for adhesive application equipment]
(1) At the start and end of the adhesive application work, it is necessary to wipe off the adhesive around the application equipment.
(2) At the start and end of the adhesive application work, it is necessary to blow high-pressure air toward the ejection holes in order to clean the flow path that supplies the adhesive to the ejection holes.
(3) At the start of work, it is necessary to check the discharge amount from the discharge holes.
(4) When a trouble is detected based on a signal sent from the sensors 12 shown in FIG. or the syringe needs to be replaced.

However, as described above, the maintenance work for the adhesive coating equipment of the metal piece laminate manufacturing apparatus described in Patent Document 1 and the laminated core manufacturing apparatus described in Patent Document 2 is very complicated and time-consuming. It takes.
In addition, in the adhesive application equipment shown in FIG. 3, the maintenance work for the adhesive discharge holes 26 and 27 must be performed while the strip-shaped thin steel plate is not fed. For maintenance work on adhesive application-related members other than the adhesive discharge hole, it is necessary to access the member from the top surface, side surface, or front surface of the adhesive application equipment to perform work such as adjustment and replacement. Therefore, even in the adhesive application equipment shown in FIG. 3, the maintenance work of the adhesive application equipment is not easy.

However, according to the equipment including the adhesive coating equipment of the present invention shown in FIG. 10, the adhesive coating equipment and the pressing plate can be pulled out in the direction perpendicular to the feeding direction of the strip-shaped thin steel plate, so maintenance is reduced. Easy. In FIG. 10, 31 and 32 are upper molds and 33 and 34 are lower molds. An adhesive applying device 35 and a pressing plate 36 are arranged between the mold. The pressing plate 36 does not exert a force on the thin steel strip as strong as the dies, but it is an instrument for pressing the thin steel strip so that the punching operation by the upper and lower dies can be performed accurately and without hindrance. be. Since the pressing plate 36 has a spring 36a for adjusting the pressing force, the elastic force of the spring 36a allows the pressing plate 36 to press the thin steel strip so as to skillfully follow the surface of the thin steel strip. Also, the pressing plate 36 is in close contact with the upper mold 31 . The pressing plate can be made not only of steel material but also of lightweight material such as aluminum alloy or resin. By reducing the weight, the pressing plate can be pulled out more easily.

The upper molds 31 and 32 are connected to the table 37, and the upper molds 31 and 32 are integrated with the table 37 to form a lower mold 33 for punching the strip-shaped thin steel plate. A downward motion to 34 and an upward motion to return to the original position can be performed.

The lower mold 33 is fixed to a stand 38, the lower mold 34 is fixed to a stand 39, and the lower molds 33 and 34 cannot be moved from their positions. Furthermore, the stands 38 and 39 are fixed to the frame 40 . 41 is the base plate of the adhesive application equipment 35 . The base plate 41 of the adhesive application equipment 35 is in close contact with the stands 38 and 39 .

As shown in FIG. 11(b), the adhesive application equipment 35 including the base plate 41 is arranged in a direction perpendicular to the feeding direction of the strip-shaped thin steel plate (the direction from left to right in FIG. 10) (the direction indicated by both arrows). ). Further, as shown in FIG. 11(a), the pressing plate 36 can also be pulled out in a direction (direction indicated by both arrows) perpendicular to the feeding direction of the strip-shaped thin steel plate (direction from left to right in FIG. 10). It is possible. In FIG. 11(b), 42 is a stopper. As shown in FIG. 11(c), the stopper 42 stops unnecessary movement of the adhesive application equipment 35 and returns the adhesive application equipment 35 to its original position. can be returned to The structure for stopping unnecessary movement of the adhesive application equipment 35 is not limited to the stopper 42 (block) of the present embodiment. good.

FIG. 12 is a perspective view of another embodiment of the adhesive application equipment of the present invention; In FIG. 12, 43 is a plurality of sensors for sensing whether or not the adhesive has been applied to the thin steel strip. , it is possible to perform work such as inspection and repair from above. Reference numeral 44 denotes a syringe for dispensing adhesive, and has a structure in which the adhesive application equipment can be pulled out in a direction perpendicular to the feeding direction of the strip-shaped thin steel plate and then pulled out upward, so inspection, replacement, etc. are possible. work is easy. Furthermore, as shown in FIG. 13, the pressing plate 36 has a structure in which it can be removed after being pulled out in the direction perpendicular to the feeding direction of the strip-shaped thin steel plate, so that inspection and repair work is extremely easy. be.

Figure 14 is a schematic cross-sectional view of another embodiment of an installation that includes the adhesive application installation of the present invention; In FIG. 10, the adhesive application equipment 35 is arranged between a mold consisting of an upper mold 31 and a lower mold 33 and a mold consisting of an upper mold 32 and a lower mold 34. In FIG. 14, the adhesive application equipment 45 is arranged immediately before the mold consisting of the upper mold 46 and the lower mold 47 . Reference numeral 48 denotes a stand, and an upper die 46 is connected to the stand 48, and the upper die 46 descends together with the stand 48 toward a lower die 47 in order to punch a strip-shaped thin steel plate. A movement and a rising movement to return to the original position can be performed. Since the lower mold 47 is fixed to the stand 49, the lower mold 47 cannot move from that position. 50 is the base plate of the adhesive application equipment 45 . The base plate 50 of the adhesive application equipment 45 is in close contact with the mounting table 49 .

The adhesive application equipment 45 including the base plate 50 can be pulled out in a direction perpendicular to the feed direction of the thin steel strip (from left to right in FIG. 10). Furthermore, the stand 49 is fixed to the frame 51 .

In addition, the adhesive applying part in the adhesive applying equipment of the present invention is not limited to the form described in this specification. Various forms such as dripping are possible.

The adhesive application equipment of the present invention can be applied to strip-shaped thin steel plates for laminated cores for step motors and motor cores.

REFERENCE SIGNS LIST 1 coil material 2 strip-shaped thin steel plate 3 inner adhesive application device 4 outer adhesive application device 5 elevating means for inner adhesive applying device 6 elevating means for outer adhesive applying device 7 upper mold 8 lower mold 9a, 9b base 10 Annular groove-shaped application part 10a Inner circular part 10b Outer annular part 11 Circular groove-shaped application part 12 Sensors 13 Solenoid valve 14 Cartridge heater 15, 16 Temperature sensor 17, 18 Adhesive supply port 19, 20 Shock absorbers 21, 22 Air cylinders 23, 24 Sensors 25, 28 Channels 26, 27 Adhesive discharge holes 31, 32 Upper molds 33, 34 Lower molds 35 Adhesive application equipment 36 Pressing plate 36a Springs 37, 38, 39 stand 40 frame 41 base plate of adhesive application equipment 35 42 stopper 43 sensors 44 syringe for discharging adhesive 45 adhesive application equipment 46 upper mold 47 lower mold 48, 49 stand 50 base plate of adhesive application equipment 45 51 frame

Claims (4)

Adhesive application equipment for applying adhesive to strip-shaped thin steel plates in order to laminate iron cores punched from strip-shaped thin steel plates into a predetermined shape by a die and adhere them to each other. Adhesive application device which is arranged in front of the mold in the feed direction or between the mold and the following mold, and the adhesive application equipment can be pulled out in a direction perpendicular to the feed direction of the strip-shaped thin steel plate. An adhesive characterized in that the equipment has a pressing plate that presses the strip-shaped thin steel plate toward the lower mold, and the pressing plate can be pulled out in a direction perpendicular to the feeding direction of the strip-shaped thin steel plate. Coating equipment. 2. The adhesive application equipment according to claim 1, wherein the adhesive application equipment and the mold are in close contact with each other. 3. The adhesive applying equipment according to claim 1, wherein the pressing plate and the mold are in close contact with each other. 4. The adhesive application equipment according to any one of claims 1 to 3, wherein the syringe for discharging the adhesive of the adhesive application equipment is detachable upward.

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