JP2014073515A - Roll press die cutting method and apparatus - Google Patents

Abstract

In a roll press punching process, a product and scrap punched from a plate material are smoothly processed so as not to be clogged between rollers.
A plate material is supplied from a sheet roll of a supply unit. The core sheet 3 and the scrap 3A, which are products, are punched out by the press rollers 13 and 14 of the roll press unit 8 so that the core sheet 3 and the scrap 3A are partially separated from the plate material 2 so as to be in a half-punched state. In the product separation unit 9, the core sheet 3 and the scrap 3 </ b> A are completely separated from the plate 2 by bringing the pad 16 of the ejector 9 into contact with the plate 2 that has been half-punched. The plate material 2 from which the core sheet 3 and the scrap 3 </ b> A are separated is wound up by the winding unit 10. Thereby, the core sheet 3 can be manufactured continuously. When the core sheet 3 and the scrap 3A are separated, the plate material 2 is not sandwiched between the rollers, so that the core sheet 3 and the scrap 3A do not clog the rollers.
[Selection] Figure 1

Description

  The present invention relates to a roll press punching method and apparatus for punching a plate material with a roller to obtain a product.

  In a roll press punching process in which a plate material is punched between rollers having punching blades to obtain a product, it is necessary to smoothly discharge the punched product and scrap from between the rollers. If the product and scrap are not processed smoothly and clogged between rollers, not only a normal product can be obtained but also the roller may be damaged.

  In view of this, various techniques for smoothly discharging products and scrap punched from a plate material have been conventionally proposed in roll press punching. For example, Patent Document 1 discloses that a scrap is removed from a plate by passing the plate between the rollers and half-scraping the scrap, and sequentially passing the half-punched plate holding the scrap between a plurality of rollers arranged downstream. A roll forming method is described which is to be separated.

  Further, Patent Document 2 discloses a scraper that passes through a plate material between a roller having a convex punching blade and a roller having a punching hole corresponding to the punching blade and is punched from the plate material and remains in the punching hole. Describes a punching device which is discharged by a discharge pin built in the machine.

JP 2004-154793 A JP 2011-88187 A

However, the conventional roll press punching process has the following problems.
In the device described in Patent Document 1, since the half-cut scrap is separated from the plate material by a plurality of rollers, the scrap may still be clogged between the rollers.

  Moreover, in what was described in patent document 2, since the roller is provided with a mechanism for driving the discharge pin to discharge the scrap remaining in the punched hole, the structure of the roller becomes complicated and the cost is high.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a roll press punching method and apparatus capable of smoothly processing products and scrap punched from a plate material.

In order to solve the above-mentioned problem, the roll press punching method according to the present invention is a method of punching a plate material with a roller, and making the plate material into a half-punched state in which products and scrap are partially separated, When completely separating the product and the scrap from the plate material, the product and the scrap are separated from the plate material by applying an external force to the plate material without sandwiching the plate material in a half-punched state with a roller. Features.
In addition, the roll press punching apparatus according to the present invention includes a roll press part that presses a plate material with a roller to make the plate material into a half-punched state in which products and scrap are partially separated, and the plate material A product separating portion for separating the product and the scrap from the plate material by applying an external force to the plate material without sandwiching the plate material in a half-pull state between rollers when completely separating the product and the scrap; It is characterized by having.

(Aspect of the Invention)
In the following, some aspects of the invention that can be claimed in the present invention (hereinafter sometimes referred to as “claimable invention”) will be exemplified and described. As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, etc., and as long as the interpretation is followed, another aspect is added to the form of each section. In addition, an aspect in which constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention. The following contents (1) to (12) correspond to claims 1 to 12.

(1): When the plate material is press-punched with a roller to make the plate material into a half-punched state in which the product and scrap are partially separated, when the product and the scrap are completely separated from the plate material, A roll press punching method characterized in that an external force is applied to the plate material to separate the product and the scrap from the plate material without pinching the plate material in a punched state.
(2): A roll press punching method characterized in that, in (1), the product and the scrap are separated from the plate material by bringing an ejector into contact with the plate material in a half-punched state.
(3): The roll press punching method according to (1), wherein the product and the scrap are separated from the plate material by injecting compressed air onto the plate material in a half-punched state.
(4): The roll press punching method according to (1), wherein the product and the scrap are separated from the plate material by curving the plate material in a half-punched state.
(5): The roll press punching method according to (1), wherein the product and the scrap are separated from the plate material by vibrating the plate material in a half-punched state.
(6): In any one of (1) to (5), the plate material is bent between a roll press portion that performs the press punching process and a product separation portion that separates the product and the scrap from the plate material. A roll press punching method characterized in that a down looper is provided for adjusting the feed speed of the plate material by bending.
(7): The plate material is press-punched with a roller, and the plate material is made into a half-punched state in which the product and the scrap are partially separated, and the product and the scrap are completely separated from the plate material. In this case, the roll is provided with a product separating portion that separates the product and the scrap from the plate material by applying an external force to the plate material without sandwiching the plate material in a half-punched state between rollers. Press punching equipment.
(8): The roll press punching apparatus according to (7), wherein the product separation unit separates the product and the scrap from the plate material by bringing an ejector into contact with the plate material in a half-punched state. .
(9): In (7), the product separation unit separates the product and the scrap from the plate material by injecting compressed air onto the plate material in a half-punched state. Processing equipment.
(10): The roll press punching apparatus according to (7), wherein the product separation unit separates the product and the scrap from the plate material by curving the plate material in a half-punched state.
(11): The roll press punching apparatus according to (7), wherein the product separation unit separates the product and the scrap from the plate material by vibrating the plate material in a half-punched state.
(12): In any one of (7) to (11), a down looper is provided between the roll press portion and the product separation portion to adjust the feeding speed of the plate material by bending the plate material. A roll press punching apparatus characterized by being made.
In the above (1) to (12), the roller may be a combination of a roller having a punching blade and a roller having a punching hole, a flat elastic body roller, or a plate-like elastic body plate.
When separating the product and scrap, since the plate material is not sandwiched between the rollers, the product and scrap do not clog the roller.
The plate material can be continuously pressed by rolling out a roll and supplying it to a roller, separating the product and scrap, and winding up into a roll.
By providing a down looper between the roll press part and the product separation part so that the feed speed of the plate material can be adjusted, in the product separation part, the plate material feed speed is slowed or the plate material is temporarily stopped. The product and scrap can be separated in the state.

  According to the roll press punching method and apparatus according to the present invention, punched products and scrap can be processed smoothly.

It is the schematic which shows the roll press punching apparatus which concerns on one Embodiment of this invention. It is the schematic which shows the process of manufacturing a lamination | stacking motor core by laminating | stacking the core sheet punched by the apparatus shown in FIG. It is a front view of the core sheet | seat punched out by the apparatus shown in FIG. It is the schematic which shows the product separation part of the apparatus shown in FIG. It is the schematic which shows the 1st modification of the product separation part of the apparatus shown in FIG. It is the schematic which shows the 2nd modification of the product separation part of the apparatus shown in FIG. It is the schematic which shows the 3rd modification of the product separation part of the apparatus shown in FIG. It is the schematic which shows the 4th modification of the product separation part of the apparatus shown in FIG. It is the schematic which shows the 5th modification of the product separation part of the apparatus shown in FIG. It is the schematic which shows the modification of the roll press part of the apparatus shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, schematic structure of the roll press punching apparatus 1 which concerns on this embodiment is shown. The roll press punching apparatus 1 is for manufacturing the core sheet 3 which is a product from the board | plate material 2 which is an electromagnetic steel plate by roll press punching.

  As shown in FIG. 3, the core sheet 3 is a substantially disc-shaped sheet member made of an electromagnetic steel plate having a thickness of about 0.15 mm that constitutes a laminated motor core used in a motor generator of a hybrid vehicle. The laminated motor core is formed by laminating to a thickness of and integrated by caulking. In the core sheet 3, notches such as a central opening 4, a groove 5 for winding a coil, and a cut-and-raised part 6 for caulking are formed by punching.

  As shown in FIG. 1, the roll press punching device 1 is a supply unit 7 that feeds a plate material 2 wound in a roll shape, a roll press unit 8 that press-cuts the plate material 2, and a product that has been press-punched. A core sheet 3 and a product separating unit 9 for separating the scrap 3A punched from the core sheet 3 from the plate material 2, and a winding unit for winding the plate material 2 after the core sheet 3 and the scrap 3A are separated into a roll shape 10. Moreover, between the supply part 7 and the roll press part 8, and between the roll press part 8 and the product separation part 9, the down loopers 11 and 12 which adjust the feed speed of a board | plate material are provided as needed.

  The supply unit 7 rotatably supports a sheet roll 2A obtained by winding a magnetic steel sheet having a thickness of about 0.15 mm in a roll shape, and continuously feeds the plate material 2 from the sheet roll 2A and supplies it to the roll press unit 8.

  The roll press unit 8 includes a pair of press rollers 13 and 14 (rollers) arranged in parallel with a predetermined gap. One press roller 13 has a convex punching blade formed on the surface, and is rotationally driven by an electric motor (not shown) via a speed reducer (not shown). The other press roller 14 is formed with a concave punching hole corresponding to the punching blade of one press roller 13, and rotates in synchronization with the one press roller 13. Then, by passing the plate material 2 between the pair of press rollers 13 and 14, the core sheet 3 as a product, the opening 4, the groove 5, and the cut-and-raised portion 6 are removed from the plate material 2 by the punching blade and the punching hole. Scrap 3A to be punched out.

  At this time, the press rollers 13 and 14 adjust the gaps between the rollers, the punching blades, and the heights of the concave and convex portions of the punching holes as shown in FIG. The punched product core sheet 3 and scrap 3A are partially separated from the passed plate material 2, that is, the core sheet 3 and scrap 3A are separated from the plate material 2 and can be separated at the boundary. However, it is not completely separated and is held by the plate 2. Thereafter, as shown in FIG. 4B, the core sheet 3 and the scrap are completely separated from the plate material 2 by applying an external force to the plate material 2. Note that one press roller 14 may be an elastic body such as rubber, and the punching hole may not be provided, and the plate member 2 may be punched only by the punching blade on the other press roller 13 side.

  As shown in FIG. 4 (A), the product separating unit 9 is provided with an ejector 15 so as to be capable of moving forward and backward, facing the core sheet 3 and the scrap 3A in the half-drawn state sent from the roll press unit 8. Yes. A pad 16 made of an elastic body such as rubber that can come into contact with the core sheet 3 and the scrap 3 </ b> A in a half-punched state is attached to the tip of the ejector 15. Then, as shown in FIG. 4B, the ejector 15 is advanced, and the core sheet 3 and the scrap 3A of the plate 2 supported by the support 17 are pressed or hit by the pad 16 to apply external force. Then, the core sheet 3 and the scrap 3 </ b> A in a half-punched state are separated from the plate material 2.

  One or both of the down looper 11 between the supply unit 7 and the roll press unit 8 and the down looper 12 between the roll press unit 8 and the product separation unit 9 are provided, and the plate material 2 is bent. By adjusting the bending amount, it is possible to adjust the feed rate of the plate material 2 to the roll press unit 8 and the product separation unit 9. Thereby, in the product separation part 9, the core sheet 3 and the scrap 3A can be separated while feeding the plate material 2, or the feed speed of the plate material 2 is adjusted by adjusting the feed speed of the plate material 2 by the down loopers 11 and 12. The core sheet 3 and the scrap 3A can be separated in a state where the deceleration or the feed is temporarily stopped.

  The winding unit 10 winds the plate 2 after the core sheet 3 and the scrap 3A are separated by the product separating unit 9 in a roll shape.

Next, a process of manufacturing a laminated motor core by punching the core sheet 3 from the plate material 2 using the roll press punching apparatus 1 will be described.
The plate material 2 is fed out from the sheet roll 2 </ b> A set in the supply unit 7 and supplied to the roll press unit 8. The plate material 2 is pressed between the press rollers 13 and 14, and the core sheet 3 and the scrap 3 </ b> A are put in a half-cut state and sent to the product separation unit 9 together with the plate material 2. As shown in FIGS. 4A and 4B, the plate material separating unit 9 moves the ejector 15 forward and backward to press the half-punched plate material 2 holding the core sheet 3 and the scrap 3A with the pad 16, or The core sheet 3 and the scrap 3A are separated from the plate 2 by tapping. Thereafter, the plate 2 from which the core sheet 3 and the scrap 3 </ b> A are separated is wound up in a roll shape by the winding unit 10.

  In this manner, the core sheet 3 is manufactured by continuously punching the plate material 2 by the roll press punching apparatus 1. Since the roll press punching apparatus 1 can press-cut the core sheet 3 of about 100 sheets per row (100 spm) per row, for example, 10 pieces (10 rows) are punched at a time. By using the facility, it is possible to manufacture the core sheet 3 of about 1000 sheets per minute (1000 spm). At this time, since the core sheet 3 and the scrap 3A are not separated from the plate material 2 in the roll press unit 8, the core sheet 3 and the scrap 3A are clogged between the press rollers 13 and 14, resulting in product defects, or the press rollers 13 and 14 Will not be damaged. Since the core sheet 3 and the scrap 3A are separated from the plate material 2 by applying an external force by the ejector 15 of the product separation unit 9 without sandwiching the plate material 2 with rollers, the core sheet 3 and the scrap 3A are processed smoothly without clogging between the rollers. be able to.

  Then, as shown in FIG. 2, the core sheet 3 separated from the plate material 2 by the product separation unit 9 of the roll press punching apparatus 1 is sequentially sent to the laminating process 18, and the phases are aligned to a predetermined thickness. The laminated motor core 19 is laminated and integrated by caulking the cut and raised portions 6. At this time, by arranging a plurality of stacking steps 18 in parallel for a large number of core sheets 3 continuously manufactured by the roll press punching apparatus 1, only four rows are shown in FIG. ), The laminated motor core 19 can be efficiently manufactured. After that, the laminated motor cores 19 manufactured in each row are sequentially loaded on the pallet 21 by the loading robot 20 and sent to the next process through an inspection process.

  Next, a modified example of the product separation unit 9 of the roll punching press apparatus 1 of the above embodiment will be described with reference to FIGS. In the following description, the same reference numerals are used for the same parts as shown in FIG. 4, and only different parts will be described in detail.

  In the product separation unit 9 according to the modification shown in FIG. 5, the ejector 15 is provided with a plurality of eject pins 22 instead of the pads 16. As shown in FIG. 5A, the plurality of eject pins 22 are arranged to face the core sheet 3 and the scrap 3A, and have different lengths depending on the timing at which they are separated. Then, as shown in FIG. 5 (B), the ejector 15 is advanced, and the core sheet 3 and the scrap 3A held in the half-drawn state on the plate material 2 are pressed by the eject pins 22 at an appropriate timing, or By tapping, an external force is applied to separate from the plate material 2. Thereby, the core sheet 3 and the scrap 3 </ b> A having different shapes, sizes, and arrangements can be smoothly separated from the plate material 2.

  In the product separation unit 9 according to the modification shown in FIG. 6, the ejector 15 is fixed, and a plurality of eject pins 23 that can be expanded and contracted are provided instead of the pads 16. The plurality of eject pins 23 are arranged to face the core sheet 3 and the scrap 3A, and the shortened position shown in FIG. 6 (A) and each shown in FIG. 6 (B) are different depending on the timing of separating them. It can be expanded and contracted between the extended position of the length. Then, as shown in FIG. 6B, the eject pins 23 are extended and the eject pins 23 press the core sheet 3 and the scrap 3A held in the half-drawn state on the plate 2 at an appropriate timing, or By tapping, the plate is separated from the plate 2 by applying an external force. Thereby, the core sheet 3 and the scrap 3 </ b> A having different shapes, sizes, and arrangements can be smoothly separated from the plate material 2.

  In the product separation unit 9 according to the modification shown in FIG. 7, an ejector nozzle 24 is provided instead of the ejector. The ejector nozzle 24 sprays compressed air onto the core sheet 3 and scrap (not shown in FIG. 7) held in the half-extracted state on the plate material 2 to cause external force to act on the core sheet 3 and scrap. Separate from 2. A plurality of ejector nozzles 24 may be arranged according to the positions of the core sheet 3 and scrap.

  In the product separation unit 9 according to the modification shown in FIG. 8, the core sheet 3 and the scrap (see FIG. 8) held in the plate material 2 in a half-drawn state using the bending of the plate material 2 wound up by the winding unit 10. Is not shown) from the plate 2. As shown in FIG. 8A, an ejector 25 is disposed in the vicinity of the outer peripheral side of the plate member 2 that is bent by the action of an external force when being wound by the winding portion 10. Then, when the plate material 2 is bent, the core sheet 3 and scrap in a half-drawn state are intended to maintain a flat plate shape, so that the front end portion in the feeding direction is lifted from the plate material 2 and comes into contact with the ejector 25. FIG. It is separated from the plate material 2 as shown in (B). Thereby, the core sheet 3 and the scrap can be separated from the plate material 2 without using a movable ejector.

  In the product separation unit 9 according to the modification shown in FIG. 9, a holding mechanism 26 that adsorbs the core sheet 3 held on the plate member 2 in a half-drawn state and an ejector 27 that separates the scrap 3A are provided. The holding mechanism 26 uses a magnetic force, negative pressure, etc. to adsorb the core sheet 3 in a half-drawn state, and presses or strikes the scrap 3A by the ejector 27 to apply an external force to the core sheet 3 and The scrap 3A is separated from the plate material 2.

  In the product separation unit 9, it is possible to separate the core sheet 3 and the scrap 3A from the plate material 2 by applying an external force to the plate material 2 by other means. For example, by vibrating the plate material 2 using a vibrator or the like, The core sheet 3 and the scrap 3A may be separated. Further, the plate material 2 may be a flat plate shape, or may be formed by press forming an uneven shape in the previous step.

  Furthermore, in the said embodiment, although the roll press part 8 punches the board | plate material 2 using a pair of press rollers 13 and 14, as shown in FIG. 10, the press roller which has a convex punching blade as shown in FIG. 13 and the plate 28 having elasticity such as rubber may be pressed into a half-punched state by pressing the plate 2. In this case, pressing can be performed by rotating the press roller 13 and feeding the plate 2 together with the plate 28.

  DESCRIPTION OF SYMBOLS 1 ... Roll press punching processing apparatus, 2 ... Plate material, 3 ... Core sheet (product), 3A ... Scrap, 8 ... Roll press part, 9 ... Product separation part, 13, 14 ... Press roller (roller)

Claims (12)

  The plate material is press-punched with a roller to make the plate material into a half-punched state in which the product and scrap are partially separated, and then when the product and the scrap are completely separated from the plate material, the half-punched state is set. A roll press punching method comprising separating the product and the scrap from the plate material by applying an external force to the plate material without pinching the plate material with a roller.   The roll press punching method according to claim 1, wherein an ejector is brought into contact with the plate material in a half-punch state to separate the product and the scrap from the plate material.   The roll press punching method according to claim 1, wherein the product and the scrap are separated from the plate material by injecting compressed air onto the plate material in a half-punched state.   The roll press punching method according to claim 1, wherein the product and the scrap are separated from the plate material by curving the plate material in a half-punched state.   The roll press punching method according to claim 1, wherein the product and the scrap are separated from the plate material by vibrating the plate material in a half-punch state.   A down looper that adjusts the feed speed of the plate material by bending the plate material is provided between the roll press unit that performs the punching process and the product separation unit that separates the product and the scrap from the plate material. A roll press punching method according to any one of claims 1 to 5, wherein:   A roll press part that presses the plate material with a roller so that the plate material is partially separated from the product and scrap, and when the product and scrap are completely separated from the plate material, A roll press punching apparatus comprising: a product separating portion that separates the product and the scrap from the plate material by applying an external force to the plate material without sandwiching the plate material in a state between rollers .   The roll press punching apparatus according to claim 7, wherein the product separation unit separates the product and the scrap from the plate material by bringing an ejector into contact with the plate material in a half-punched state.   The roll press punching apparatus according to claim 7, wherein the product separation unit separates the product and the scrap from the plate material by injecting compressed air onto the plate material in a half-punched state.   The roll press punching apparatus according to claim 7, wherein the product separating unit separates the product and the scrap from the plate material by curving the plate material in a half-punched state.   The roll press punching apparatus according to claim 7, wherein the product separation unit separates the product and the scrap from the plate material by vibrating the plate material in a half-punched state.   The down looper which adjusts the feed speed of this board | plate material by bending the said board | plate material between the said roll press part and the said product separation part is provided. A roll press punching apparatus according to 1.

Images