JPH10109298A - Layered product take-out device with scrap discharge mechanism in punching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent marring of a layered core by a scrap in a punching mold devised to take out core punched plates as the layered core at the time when the core punched plates are layered in a specified number by punching the core punched plates in an after-process punching a slot from a band silicon steel plate. SOLUTION: It is devised so that a scrap does not make contact with a receiving base 30 to receive a layered core 14 by partitioning a part to punch the scrap and a part to punch a core punched plate separately by a partition plate 37. The scrap is dropped on a conveyor 25 for the scrap from a female mold 16 and delivered, the layered core 14 is once received by the receiving base 30, transferred to a conveyor 35 for a product through a chute 34 as the receiving base 14 is inclined in the middle of lowering motion and delivered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate removing device with a scrap discharging mechanism in a punching device capable of separating and removing a scrap punched from a band-shaped plate material and a laminate of product plates.

[0002]

2. Description of the Related Art For example, a laminated core of a rotor or a stator of a motor is formed by laminating a predetermined number of cored plates. The punching die 1 for punching out a cored plate is configured as a progressive die as shown in FIG. 9, and punches out a cored plate 3 after punching a slot or the like from a silicon steel plate 2 as scrap. In this case, the newly punched coring plate 3 is held in the die hole 4 in a state where it is overlapped with the previously punched coring plate 3 and is fixed in the die hole 4. When the laminated core 5 is formed by laminating a plurality of cores, the laminated core 5 is separated by a core separating device (not shown) and removed from the die hole 4. The laminated core 5 removed from the die hole 4 is received by the conveyor 6 and transported to the next step. The conveyor 6 is used not only for conveying the laminated core 5 but also for discharging scraps. For this purpose, the conveyor 6 is extended to a punching portion such as a slot of the punching die 1 so as to be able to receive the scrap 7 punched from the strip 2.

[0003]

In the above configuration, the conveyor 6 carries the scrap 7 together with the laminated core 5 as a product and transports the scrap 7 together. For this reason, there is a problem that the laminated core 5 is damaged by the scrap 7.
Further, since the conveyor 6 is separated downward from the punching die 1, the head of the laminated core 5 is large, and the laminated core 5 is
There is also a problem that the conveyor 6 is damaged by an impact when dropped from the conveyor 6 and received by the conveyor 6, the laminated core 5 is deformed, and furthermore, the laminated core 5 is broken by hitting a scrap 7 on the conveyor 6.

Accordingly, it is an object of the present invention to separately carry out the laminate and the scrap to prevent the laminate from being damaged, and to reduce the drop of the laminate so that it falls from the punching die. It is an object of the present invention to provide a laminate removing device with a scrap discharging mechanism in a punching device that can reduce the impact at the time of the cutting.

[0005]

In order to achieve the above object, a means according to the present invention is directed to a punching die having a scrap punching portion and a product punching portion, wherein a strip-shaped plate material is removed from the scrap punching portion. After sending to the product punching section and punching out unnecessary portions from the strip-shaped sheet material as scrap at the scrap punching section, the product sheet is punched from the strip-shaped sheet material at the product punching section, and the product sheets are sequentially laminated at the product punching section. In a punching device that is configured to hold the stack of product plates that are vertically movable below the punching die and that are sent out from the product punching unit, and that the stack is received. A receiving table that inclines and slides down the laminate along the inclination, a product conveyor that receives and carries out the laminate that slides down from the receiving table, and a scrap punching unit and a product below the punching die; Hit A partition member disposed so as to define between the parts and is characterized by comprising a scrap conveyor for unloading receiving scrap punched by the scrap punching recessed portions.

[0006] According to this means, when the scrap is punched from the strip-shaped plate material, it falls onto the scrap conveyor. At this time, even if the scrap scatters to the pedestal side due to the impact of punching or the like, the scrap is not blocked by the partition member and does not fall on the pedestal. Then, when the laminate is removed from the punching die, it is received by the pedestal, and then the cradle is inclined, so that the cradle is slid down and transferred to a product conveyor different from the scrap conveyor, It is transported to the next process by the product conveyor.

According to a second aspect of the present invention, the pedestal is moved up and down by a hydraulic cylinder, and the hydraulic cylinder always keeps the pedestal in a horizontal state near the punching die, so that the punching product punching is performed. After the laminated body held in the section comes into contact with the pedestal, the pedestal is lowered by the thickness of the product plate each time the product plate is punched. With this configuration, it is possible to reduce the impact when the laminate is removed from the punching die and received by the receiving table.

According to a third aspect of the present invention, in order to simplify a mechanism for operating the pedestal between the horizontal state and the inclined state, the pedestal is rotatable by a lifting member which is vertically moved by a fluid pressure cylinder. When the elevating member descends to a predetermined position, the portion separated from the rotation supporting portion is locked by the locking member so as to rotate and tilt. According to a fourth aspect of the present invention, the partition member is configured so as to be capable of changing the position, so that the partition member can cope with a punching die having a different positional relationship between the scrap punching section and the product punching section.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an apparatus for punching a laminated core of a motor will be described below with reference to FIGS. The punching device of this embodiment is shown in FIGS.
As shown in FIG. 4, slots and the like, which are unnecessary portions, are punched out from the strip-shaped silicon steel plate 11 as scraps 12, and a core plate 13 as a product plate is punched from the strip-shaped silicon steel plate 11 at the next station. The punched plates 13 are sequentially laminated to form a laminated core 14 as a laminated body shown in FIG.

In the punching die 15 of such a punching device,
The lower die 16 is mounted on a bolster 17. The lower die 16 has a slot punching die 18 serving as a scrap punching portion for punching the slots and the like as the scrap 12, and a punching die 18 for punching the core punching plate 13. A core punching die 19 as a product punching section is provided.

On the other hand, a slot punching die 20 and a core punching punch 21 corresponding to the slot punching die 18 and the core punching die 19 are attached to an upper die (both not shown) provided on the ram of the press. The scraps 12 and the coring plate 13 are punched from the silicon steel strip 11 by the cooperation of the dies 18 and 19 and the punches 20 and 21. Note that the scrap 12 punched by the slot punching die 18 is guided to the lower die 16 by a reverse tapered guide hole 22 formed continuously with the slot punching die 18, and is concentrated on a portion S indicated by oblique lines in FIG. Dropped.

The lower die 16 is provided with the core punching die 1.
The sleeve 23 is provided continuously below the lower side of the sleeve 7. This sleeve 23 fits tightly with the punched core punching plate 13, and when the core punching plate 13 is punched out next, the core punching plate 13 before and after the punching is pressed beforehand as shown in FIG.
Are connected to each other by the fitting of the uneven portions 13a shown in FIG. Accordingly, the continuously punched cored plates 13 are stored in the sleeve 23 in a stacked state, and the cored plate 13 group in the sleeve 23 is provided with a core every time the cored plate 13 is punched from the band-shaped silicon steel plate 11. The punching plate 13 is sequentially pushed down by the thickness of the punching plate 13.

The cored plate 13 in the sleeve 23
The group is taken out as a laminated core 14 by a predetermined number. Separation between the laminated cores 14 is achieved by forming a single cored plate 13 existing between the laminated cores 14 by forming a back-cut hole 13b in a portion where the concave-convex portion 13a is formed so as to be free of the concave-convex portion 13a. This is done by preventing the laminated cores 14 from being joined to each other. And the uneven part 1
When the coring plate 13 without 3a is lowered to a predetermined position,
The core separation device (not shown) operates to operate the lower laminated core 14.
From the sleeve 23. As means for detecting that the coring plate 13 without the uneven portion 13a has dropped to a predetermined position, for example, the coring plate 1
It is conceivable that a counter configured to count the number of punched sheets of No. 3 is detected, and a point in time when the counter counts a predetermined number of sheets is detected as a point in time when the cored plate 13 without the uneven portion 13a has dropped to a predetermined position.

A rectangular hole 24 is formed in a portion of the bolster 17 corresponding to the slot punching die 18 and the core punching die 19, and the scrap 12 discharged from the guide hole 22 of the lower die 16 is formed by the rectangular hole 24. It falls below the bolster 17 through the rectangular hole 24. Below the bolster 17, a scrap conveyor 25 for receiving the scrap 12 and carrying it out is arranged.

A plate-like holder 26 is mounted on the inner surface of the rectangular hole 24 of the bolster 17. The holder 26 is provided with a pair of linear guides 27, and the elevating table 28 is supported by the linear guides 27 so as to be vertically movable. The holder 26 is provided with a pneumatic cylinder 29 as a fluid pressure cylinder for moving the elevating table 28 up and down. The elevating table 28 is pivoted on the upper end of a rod 29 a of the pneumatic cylinder 29. It is connected as possible.

On the elevating table 28, a receiving table 30 for receiving the laminated core 14 removed from the sleeve 23 is provided. The receiving table 30 has a lifting table 28 at the right end in the figure.
Is supported rotatably in the vertical direction via a hinge 31,
The support pin 32 attached to the elevator 28 is at the left end in the figure.
Has been received by When the left end is received by the support pins 32, the receiving table 30 is substantially horizontal.

A stopper 33 as a locking member shown in FIG. 1 is attached to the holder 26 at a predetermined height. When the lifting platform 28 is pulled down by the pneumatic cylinder 29, the left end of the receiving platform 30 comes into contact with the stopper 33 on the way, and after the left end of the receiving platform 30 contacts the stopper 33, The lifting table 28 is pulled down by the pneumatic cylinder 29 so that the receiving table 2
8 is inclined downward to the right as shown in FIG.

A chute 34 is provided at a position where the cradle 30 stops in an inclined state as shown in FIG. 1 so as to be continuous with the right end of the cradle 30. A product conveyor 35 is provided. Then, the laminated core 14 received by the pedestal 30 is
Is inclined, it slides down on its upper surface under its own weight, and the chute 3
4 to the product conveyor 35.

On the other hand, in the rectangular hole 24 of the bolster 17, a partition plate 37 as a partition member rotatably supported in the horizontal direction via a hinge 36 is disposed on the inner surface thereof. The partition plate 37 is for blocking the scrap 12 discharged from the lower mold 16 so as not to be scattered on the receiving table 30. The partition plate 37 is bent in a substantially L-shape, and the upper end thereof is formed in the lower mold 16.
The lower end is extended to a position slightly above the cradle 30 when the cradle 30 descends and stops in an inclined state.

One end of a connecting plate 38 constituting a link mechanism is rotatably connected to a bent portion of the partition plate 37 via a hinge 39. A pin 40 is attached to the other end of the connecting plate 28, and the pin 40 is attached to the holder 26.
Is slidably inserted into a long hole 41a of the guide plate 41 attached to the guide plate 41. And, the pin 40 is elongated slot 41a.
When the connecting plate 28 is operated so as to slide along, the partition plate 37 rotates in the direction of arrow A to move between the first partition position shown in FIG. 4 and the second partition position shown in FIG. To convert the position.

As shown in FIGS. 5 and 6, first and second through holes 42 and 43 are formed at the other end of the connecting plate 38, and these two through holes 42 and 43 are formed.
On the other hand, the guide plate 41 has first and second stopper holes 44.
And 45 are formed. Then, when the partition plate 37 is set at the first partition position, the first through hole 42 of the connecting plate 38 matches the first stop hole 44, and in this state, the lock pin 45 is passed through the two holes 42, 44. The partition plate 37
Are locked in the first partition position. When the partition plate 37 is set at the second partition position, the second through hole 43 of the connecting plate 38 matches the second stop hole 45, and in this state, the lock pin 46 is passed through the two holes 43, 45. Divider 3
Reference numeral 7 is locked at the second partition position.

First and second proximity switches 47 and 49 as position detection switches are mounted on the holder 26 so as to be located immediately below the first and second stopper holes 44 and 45, respectively. . On the other hand, the lock pin 46 is made of a magnetic material, for example, iron. When the partition plate 37 is locked at the first partition position or the second partition position by the lock pin 46, the first proximity switch 47 or the second proximity switch is locked. Switch 48 detects this.
The detection signals of the proximity switches 47 and 48 are input to a control device of a punching device (not shown). The control device determines that the scrap punching die 18 is a core punching die as shown in FIG. 19, the first proximity switch 4
When the detection signal is input from 7, the press operation is executed,
When the detection signal is input from the second proximity switch 48, the press operation is stopped.

Next, the operation of the above configuration will be described. During the pressing operation, the rod 29a of the pneumatic cylinder 29 is raised and holds the receiving table 30 in a horizontal state near the lower surface of the lower die 16. In this state, the strip-shaped silicon steel sheet 11 is intermittently fed in the direction of arrow B, and a slot is punched by a die 18 for punching a scrap and a punch 20, and a core plate 13 is punched by a die 19 for punching a core and a punch 21. Is punched out.

Then, the scrap 12 generated by punching out the slot is transferred from the guide hole 22 of the lower die 16 to the bolster 1.
7 falls on a scrap conveyor 25 through the rectangular hole 24 and is carried out by the conveyor 25 to the outside. At this time, since the partition plate 37 is located between the portion where the slot is punched out and the receiving table 30, even if the scrap 12 scatters from the guide hole 22 due to the impact at the time of punching, the scrap 12 is still separated from the guide plate 22. It does not fall on the cradle 30 because it is blocked by 37.

On the other hand, the core punching die 13 and the core punching plate 13 punched by the punch 21 are connected to each other by fitting the previously punched core punching plate 13 and the concavo-convex portions 13 a into each other. It is fitted and held in a stacked state. The laminated cored plate 13 fitted and held in the sleeve 23 is sequentially lowered by punching of the cored plate 13 thereafter, and when the lowermost cored plate 13 comes into contact with the cradle 30, the subsequent cored plate 13 is contacted. By punching out the coring plate 13, the pedestal 30 becomes the rod 2 of the pneumatic cylinder 29.
While lowering 9a, it descends together with the cored plate 13 in the laminated state. And the uneven portion 13a
When the cored plate 13 without the core is lowered to a predetermined position, a core separating device (not shown) is operated to remove the lower laminated core 14 from the sleeve 23.

Then, the pneumatic cylinder 29 retreats (lowers) the rod 29a in synchronization with the separating operation of the core separating device.
Then, the laminated core 14 detached from the sleeve 23 slides down while being placed on the receiving table 30. Since the laminated core 14 separated from the sleeve 23 does not fall to the receiving table 39 with a head, it is possible to inherently prevent the laminated core 14 from being damaged by an impact at the time of falling.

When the pedestal 30 is lowered to a predetermined position by the pneumatic cylinder 29, the left end of the pedestal 30 comes into contact with the stopper 33. About the hinge 31 of FIG. Then, the laminated core 14 descends along the inclination of the cradle 30, and passes through the chute 34 to the product conveyor 3.
5 and is conveyed by the conveyor 35 to the next process.

By the way, as shown in FIG. 8, the lower die 16 mounted on the bolster 17 has the punched portion of the scrap 49 and the punched portion of the core punching plate 13 substantially at the center in the width direction of the strip-shaped silicon steel plate 11. In the case where the partition plate 37 is replaced with another lower die, if the position of the partition plate 37 is not changed, the partition between the punched portion of the scrap 49 and the receiving table 30 may not be able to be partitioned. The lower die shown in FIG. 8 is for punching out a portion corresponding to the gap between the rotor and the stator from the band-shaped silicon steel plate 11 in an annular shape and excluding this as a scrap 49. It is provided in the pre-process part.

In the case of such a lower die, the receiving table 30 is lowered to the position shown by the solid line in FIG. 1 so as not to obstruct the turning operation of the partition plate 37.
Is removed from the first through hole 42 and the first stopper hole 44, the partition plate 37 is set at the second partition position, and the lock pin 46 is inserted into the second through hole 43 and the second stopper plate 45. I do. As a result, the space between the punched portion of the scrap 49 and the punched portion of the coring plate 13 is cut off by the partition plate 37, so that there is no possibility that the scrap 49 will fall on the receiving table 30.

As described above, according to the present embodiment, the scrap 12 is transported by the scrap conveyor 25, and the laminated core 14 is transported by the product conveyor 35. Troubles, such as running, can be eliminated. In addition, the laminated core 14 is not dropped directly from the lower mold 16 to the product conveyor 35, but is once received by the receiving table 30 and moved to the product conveyor 35 by sliding down the slope of the receiving table 30, Since there is no exchange between the laminated core 14 and the product conveyor 35 accompanied by an impact, the laminated core 14 and the product conveyor 3
5 can be essentially prevented.

Further, in this embodiment, particularly, the receiving table 30 is always kept in a horizontal state near the lower surface of the lower die 16, and when one coring plate 13 is punched out, the pneumatic cylinder is increased by the plate thickness. Since the rod 29a of the 29 is pushed down, the drop from the lower die 16 to the receiving table 30 is extremely small, and the laminated core 14 is not received with an impact on the receiving table 30.

Further, since the space between the portion of the lower mold 16 where the scrap 12 is generated and the pedestal 30 is blocked by the partition plate 37, the scrap 12 may hit the laminated core 14 on the pedestal 30, So you do n’t get on
Damage to the laminated core 14 by the scrap 12 can be more reliably prevented.

In this embodiment, one end of the receiving table 30 is rotatably supported by a hinge 31 on a lifting table 28 which is moved up and down by a pneumatic cylinder 29. Since the other end side is supported by the stopper 33, the receiving table 30 is inclined.
The drive source for vertically moving 0 and the drive source for tilting the receiving table 30 can be the same pneumatic cylinder 29, and the configuration for tilting the receiving table 30 includes a stopper 33. It is simple and the manufacturing cost can be reduced.

Further, the partition plate 30 is moved from the first partition position to the second partition position.
The position can be changed between the above-mentioned partitioning positions, so that even if the positional relationship between the punched portions of the scraps 12 and 49 and the punched portion of the core punching plate 13 is changed by the lower mold, this can be dealt with. .

The present invention is not limited to the embodiment described above and shown in the drawings, but can be extended or modified as follows. The pneumatic cylinder 29 may be replaced with a hydraulic cylinder. The elevating means for moving the pedestal 30 up and down is not limited to the fluid pressure cylinder, but may be a screw mechanism using a motor as a drive source.

The mechanism for performing the operation in which the cradle 30 contacts the stopper 33 when the cradle 30 descends and rotates about the hinge 31 to tilt constitutes a tilting means. 30 is lowered to a predetermined position, and then one end of the receiving table 30 is pushed up (for example, a pneumatic cylinder).
There are various other possible configurations, such as a configuration of pushing up and tilting.

[0037]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, since the scrap and the laminate are transported by separate conveyors, the laminate is not damaged by the scrap.

According to the second aspect of the present invention, since the receiving stand for receiving the laminated body is always located near the punching die, the impact when the laminated body removed from the punching die is received by the receiving stand. Can prevent damage.

According to the third aspect of the present invention, when the elevator is lowered by the pneumatic cylinder, the receiver comes into contact with the stopper and tilts, so that the tilting structure of the receiver can be simplified. Can be.

According to the fourth aspect of the present invention, since the position of the partition member can be changed, it is possible to cope with a plurality of punching dies.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention when a laminated core is taken out.

FIG. 2 is a diagram corresponding to FIG. 1 shown in a normal state;

FIG. 3 is a longitudinal sectional front view.

FIG. 4 is a plan view of a main part.

FIG. 5 is a plan view showing a configuration of a stopper of a partition plate.

FIG. 6 is a longitudinal sectional view.

FIG. 7 is a cross-sectional view showing a coring plate connecting configuration.

FIG. 8 is a view corresponding to FIG. 4, showing another punching die.

FIG. 9 is a diagram corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

In the figure, 11 is a strip silicon steel plate (strip plate material), 12 is scrap, 14 is a laminated core (laminated body), 15 is a punching die, 16
Is a lower die, 17 is a bolster, 18 is a slot punching die, 19 is a core punching die, 20 is a slot punching punch, 21 is a core punching punch, 25 is a scrap conveyor, 26 is a holder, 28 is a lift, and 29 is empty A pressure cylinder (fluid pressure cylinder), 30 is a pedestal, 33 is a stopper, 35 is a product conveyor, 37 is a partition plate (partition member), 45 is a lock pin, and 49 is scrap.

Continued on the front page (72) Inventor Tetsuji Yamazoe 2121 Nao, Asahi-machi, Mie-gun, Mie Pref.

Claims (4)

[Claims] 1. A stamping die having a scrap punching section and a product punching section, a strip-shaped plate material is sent from the scrap punching section to the product punching section, and unnecessary portions are removed from the strip-shaped plate material at the scrap punching section. After punching as scrap, a product plate is punched from a band-shaped plate material at a product punching unit, and the product plate is sequentially stacked and held at a product punching unit. A pedestal movably disposed to receive the laminate of the product plate sent out from the product punching unit, and to receive the laminate and incline and slide down the laminate along the inclination; A product conveyor that receives and transports the laminate that slides down from a cradle, and a partition member that is arranged below the punching die to partition between the scrap punching unit and the product punching unit; Scura Flop punching recessed portions scrap discharge mechanism-integrated laminate take-out apparatus according formed by and a scrap conveyor punching device for unloading receiving punched scrap. 2. The pedestal is moved up and down by a hydraulic cylinder, which always holds the pedestal in a horizontal position near the punching die and is held by a punching product punching section. 2. A laminate with a scrap discharging mechanism in a punching device according to claim 1, wherein the receiving tray is lowered by the thickness of the product plate each time the product plate is punched after the laminate comes into contact with the tray. Take-out device. 3. The receiving table is rotatably supported by an elevating member that is moved up and down by a hydraulic cylinder. When the elevating member is lowered to a predetermined position, a portion separated from the rotation supporting portion is locked by a locking member. 3. The laminate removing device with a scrap discharging mechanism in the punching device according to claim 1, wherein the laminate is rotated and inclined by being performed. 4. The laminate removing device with a scrap discharging mechanism in the punching device according to any one of claims 1 to 3, wherein a position of the partition member is changeable.