JP3497123B2 - Waste removal method and waste removal apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing method and a dust removing device.

[0002]

2. Description of the Related Art Conventionally, as a method of removing an unnecessary scrap portion from a punched sheet, leaving a product portion, an operator hits the scrap portion with a mallet or a plastic hammer. The method of dropping and removing was adopted. However, such punching work by manpower requires a great deal of labor, places a heavy burden on the arms and waist, is harsh, and is inefficient.

Therefore, a scrap removing device has been used which can mechanically perform such a scrap removing operation. For example, in a pinboard-type scrap removing device, an upper mold having a large number of pin holes arranged in a matrix is configured to be moved up and down with respect to a lower mold on which a sheet is placed, and a position corresponding to the scrap portion of the sheet is formed. Only the pins of No. 2 are left in the upper mold, and the pins are used to perform a press-type thrusting operation with respect to the residue to separate and remove the residue from the product.

[0004]

However, in the conventional dust removing device as described above, in order to protect the product portion when removing the dust portion, it is necessary to protect the product portion from the pins corresponding to the dust portion and the product portion. It is necessary to detect those existing at the boundary of the dust portion, those that may come into contact with the fine constricted portion of the product portion, and remove them in advance. It was done by work.

However, the task of finding such an unnecessary pin (which may scratch the product part) from a large number of pins is very troublesome even for a skilled person, and is inefficient. It was Particularly, in the case of high-mix low-volume production, improvement of work efficiency has been demanded.

Therefore, an object of the present invention is to provide a dust removing method and a dust removing device which can efficiently separate and remove the dust portion from the product portion without scratching the product portion. Without the need for skill
It is an object of the present invention to automatically remove the pins (which may scratch the product part) in advance prior to the punching work.

[0007]

In order to achieve the above-mentioned object, the scrap removing method of the present invention is such that the upper die holds an upper die pin for punching so that it can be moved vertically and fixed, and the lower die punches. A lower die pin is held so that it can be moved up and down and fixed, a first template for product section is provided under the upper die so as to be able to move up and down, and a second template for product section is provided under the lower die so as to be able to move up and down , By making the first template for the product part and the upper mold relatively close to each other, the product part corresponding pin corresponding to the product part of the sheet to be punched out of the upper mold pin is punched out from the sheet. Together with the interference pin that interferes with the above, it is moved to the upper retracted position to leave only the scrap pin that does not interfere with the punching line at the work position of the upper mold, and the second template for the product part and the second template .
Of the lower die located above the lower die relatively interferes with the punching line of the sheet by the pin corresponding to the waste portion of the sheet in the lower die pin. With the pins left in the lower retracted position, only the product pins that do not interfere with the punching line are moved to the work position of the lower mold, and the sheet is placed on the product pins to separate the upper mold and the lower mold. This is a method in which the scrap portion of the sheet is punched separately from the product portion by relative movement.

Further, the scrap removing device of the present invention includes an upper die for holding the upper die pin for punching so as to be vertically movable and fixable,
A lower die for holding the punching lower die pin so that it can be moved vertically and fixed, and abutting from below the product portion corresponding pin corresponding to the product portion of the sheet to be punched from below from the upper die pin. Product part first template for moving the product part corresponding pin to the upper retracted position together with the interference pin that interferes with the punching line of the sheet, and the product that does not interfere with the punching line of the sheet from the lower die pin comprising a second template for moving products to the working position of the lower mold, the in from below only use pin contact, first for the upper mold and the product portion
1 template and lower mold and 2nd template for product section
Were sequentially arranged from top to bottom .

A part or the whole of the pin hole formed in the upper mold and a part or the whole of the pin hole formed in the lower mold;
Is preferably disposed at a non-corresponding position in plan view.
Further, the lower die pin may be formed to have a larger average diameter, while the upper die pin may be formed to have a smaller average diameter. Alternatively, the upper die and the lower die are composed of two pin boards that can slide relative to each other, and the upper die and the lower die have an upper portion and a lower portion, respectively. It is also preferable that a notch groove for engaging with the pin board is formed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings showing the embodiments of the present invention.

FIGS. 1, 2, and 3 are views for explaining the basic structure and operation of a residue removing apparatus for carrying out the residue removing method of the present invention, in which 1 is an upper die and 2 is Lower mold, 3
Is an upper die pin for punching (hereinafter referred to as an upper die pin) held by the upper die 1 so as to be vertically movable and fixable, and 4 is a lower die pin for punching held by the lower die 2 so as to be vertically movable and fixable. (Hereinafter referred to as the lower die pin), and its upper die 1 and lower die 2
Is guided by the guide rods 5 and 6 and driven up and down by a driving device (not shown). Further, 7 is a first template for product section, 8 is a second template for product section,
Both of the templates 7 and 8 are guided by guide rods 9 and 10 and driven up and down with respect to the upper mold 1 and the lower mold 2 by a driving device (not shown).

With such a structure, as shown in FIGS. 1 and 2, the first template 7 for the product portion is lifted to make a punching sheet (hereinafter referred to as a sheet) in the upper die pin 3. The product portion corresponding pin 31 that abuts the template body 71 (see FIG. 7) corresponding to the product portion 12 of 11 (see FIG. 6) is moved to the upper retracted position 18 together with the interference pin 151 that interferes with the scrap portion 13 of the sheet 11. Only the scrap pin 17 that is moved and does not interfere with the product portion 12 can be left in the working position 28 of the upper mold 1. That is, the scrap pin 17 does not interfere with the punching line (boundary line) E in FIG. 6 and corresponds only to the scrap portion 13. The interference pin 151 is a pin that interferes with the punched line E.

On the other hand, by lifting the scrap portion template 8 as shown in FIGS. 1 and 2, the scrap portion corresponding pin 41 corresponding to the scrap portion 13 of the sheet 11 in the lower die pin 4 is punched out of the sheet 11. Along with the interference pin 152 that interferes with the line E, only the product pin 16 that does not interfere with the punching line E while remaining in the lower retracted position is moved to the working position 29 of the lower mold 2 (as an upward protruding shape).

In FIG. 7, in the case of the second template 8, its template body 81 must be made smaller than the template body 71 of the first template 7 by one size. In other words, the template body 81 of the second template 8 has a smaller shape (area) than the template body 71 of the first template 7 because it is necessary to avoid pins that interfere with the punched line E in FIG.

As described above, the product portion 12 and the scrap portion of the sheet 11 are
Interfering with both 13--that is, interfering with the punched-out line E--interference pins 15 (151, 152) are located at the upper retracted position 18 (of the upper die 1) and (of the lower die 2), respectively. Downward retracted position 19
Then, in a state where the sheets 11 are separated and separated from each other, as shown in FIG. 3, a plurality of sheets 11 are placed on the product pins 16 in a laminated state, and the upper mold 1 is lowered. If the upper die 1 and the lower die 2 are brought relatively close to each other, the scrap pin 17 that does not interfere with the product portion 12 (punching line E) and the product pin 16 that does not interfere with the scrap portion 13 (punching line E). By cooperating with, the scrap portion 13 of the sheet 11 can be separated and removed from the product portion 12, and the flaw-free product portion 12 can be manufactured with a small number of working steps.
You can get it efficiently.

Further, in FIG. 3, reference numerals 26 and 26 denote end receiving members for receiving the end portion of the sheet 11 so that the end portion of the sheet 11 does not hang down. When the sheet 11 receives an impact from the scrap pin 17, the lower portion thereof. Is turned outward so that it can be detached from the end of the seat 11.

To explain the whole in more detail, the upper die 1 has a large number of pin holes H _1, ... As shown in FIG. 4 and FIG. 5, which is a sectional view taken along the line X--X in FIG. The two pinboards B ₁ and B ₁ on which are formed are stacked so as to be slidable relative to each other. The pin holes H ₁ having inner diameters of different sizes are alternately arranged,
The average diameter is set to be relatively small, and the distance between the pin holes H ₁ is set to be relatively small. In FIG. 5, 42 is a stop ring for setting the upper limit of the upper die pin 3.

As described above, by setting the average diameter of the upper die pins 3 fitted in the respective pin holes H ₁ , H _1, ... To a relatively small value, a minute gap in the product portion 12 (and the scrap portion 13) is obtained. It is possible to flexibly deal with complicated shapes such as holes and small holes, and the punching accuracy is significantly improved. Although illustration is omitted, the pin holes H ₁ formed in the pin board B ₁ may be arranged in a pattern, for example, a combination of staggered rows and parallel rows, or may be arranged randomly.

The upper die pins 3 fitted into the respective pin holes H ₁ , H ₁ ... Of the upper die ₁ are notched at the upper and lower portions thereof so as to be engaged with the respective pin holes H ₁ , H _1. Grooves 21 and 22 are formed, and by sliding both pinboards B ₁ and B ₁ , the upper notch groove 21 or the lower notch groove 22 has staggered pin holes H ₁ , H _1, ... , And lock each upper die pin 3 in the upper retracted position 18 or the working position 28.
(Refer to FIG. 2 or FIG. 3).
In addition, in the pin holes H ₁ of the pin board B ₁ arranged on the upper side, the large pin holes H ₁ and the small pin holes H ₁ are engaged with the notch grooves 21 and 22 of the upper die pin 3 at once without a gap. In order to make it possible, an escape hole portion s protruding outward (sliding direction) is provided (see FIG. 4).

In the initial state, as shown in FIG. 1, the upper die pin 3 is suspended by suspending the upper notch groove 21 in the pin holes H ₁ and H ₁ of both pin boards B ₁ and B _1. The upper die pin 3 is provided with a positioning member (not shown) corresponding to the upper portion of the upper die pin 3 so that the lower ends of the upper die pin 3 are aligned horizontally. Then, as described above, FIG.
As shown in FIG. 6, when the product part template 7 is raised, the product part corresponding pin 31 moves to the upper retracted position 18 together with the interference pin 151, and the lower cutout groove 22 causes the two pinboards B.
_It is locked in the pin holes H ₁ and H ₁ of ₁ and B ₁ .

Among the upper die pins 3, one having a large diameter,
Set the level difference of the lower end at the working position 28 between the one with a small diameter and set the lower end of the thick upper die pin 3 (scrap pin 17) to
It is also possible to prevent the pin from being damaged by projecting it slightly below the lower end of the thin upper mold pin 3 (scrap pin 17) and abutting it on the scrap portion 13 of the sheet 11 with a slight time lag. it can.

On the other hand, the lower mold 2 has the same structure as the upper mold 1, as shown in FIGS. 8 and 4. That is, two pinboards B ₁ and B ₁ each having a large number of pin holes H ₁ are formed so as to be slidable relative to each other, and the pin holes H ₁ have different inner diameters. Are alternately arranged, the average diameter thereof is set relatively large, and the distance between the pin holes H ₁ is set relatively coarse.

By setting the distance between the pin holes H ₁ relatively coarse in this way, it becomes easy to improve the rigidity and strength of the pin boards B ₁ , B ₁ . A part or the whole of the pin hole H ₁ formed in the lower mold 2 is arranged at a non-corresponding position in plan view with a part or the whole of the pin hole H ₁ formed in the upper mold 1. Has been done. Although not shown, the pin hole H ₁ of the pinboard B ₁ arranged on the upper side is provided with a similar relief hole and the pin board B ₁ of the upper mold 1 (see FIG. 4).

Further, by setting the average diameter of the lower die pins 4 fitted into the respective pin holes H ₁ ... To a relatively large value, the product portion 12 can be supported with a large surface area, so that the product portion 12 can be supported.
It is possible to prevent scratches on 12.

Similarly to the upper die pin 3, the lower die pin 4 fitted into each pin hole H ₁ of the lower die 2 has an upper portion and a lower portion.
Notched grooves 21 and 22 are formed respectively.

Then, as described above, when pushed up by the scrap portion template 8, as shown in FIG. 2, the scrap portion corresponding pin 41 remains at the lower retracted position 19 together with the interference pin 152, and the (punching line). (Does not interfere with E) Move only the product pin 16 to the working position 29,
22 is engaged with the pin holes H ₁ , H _1, ... Which are different in level from each other on both pin boards B ₁ , B ₁ .

FIG. 6 shows a sheet to be punched.
11 shows an example of the sheet 11. This sheet 11 has a punching line E already applied to the boundary line (shown by a solid line) between the product portion 12 and the scrap portion 13 in a separate cutting step. is there. The broken line 14 indicates a bent portion. The seat
The shape of 11 is not limited to FIG.

First and second templates 7 and 8 for product section
Is a pair of pinboards b in which template main bodies 71 and 81 corresponding to the product portion 12 of the sheet 11 are connected to each other by hinges 33 or the like so as to be openable and closable (or detachable from each other), for example. _1, b is configured to pinched between _1, pin that on both pinboard b _1, b _1, pin holes H ₁ ... same arrangement pattern and the pinboard B ₁ of the upper mold 1 and lower mold 2 Hole h ₁
Are formed, and the pin boards b ₁ and b ₁ are closed, and the template bodies 71 and 81 are sandwiched therebetween, and the support frames 35 and 36 attached to the guide rods 9 and 10 (see FIG. 1).
Hold it for use. Although not shown, positioning means such as a protruding pin for positioning the template bodies 71 and 81 is provided. The connection, connection, fixation, and structure of the first and second templates 7 and 8 are not limited to the hinge 33 shown in the figure, and the design can be freely changed. The structure can be freely attached and removed, but it is also free.

FIG. 9 is an enlarged view of the first product portion template 7 for explaining the interference pin 151 that interferes with the scrap portion 13 (punching line E) of the sheet 11 of FIG. 6, and corresponds to the product portion 12. An interference pin 151 (not shown) that interferes with the scrap portion 13 when the product portion template 7 is raised is fitted into the pin hole (h ₁ ) partly protruding from the template body 71, and Interference pin 151 with corresponding pin 31
Are moved to the upper retracted position 18 (see FIG. 2). In FIG. 9, the two-dot chain line indicates the second template 8
It can be seen that it is the template body 81, and avoids the pin hole h ₁ (on the punched line E).

FIG. 8 is an explanatory view of an apparatus for carrying out the product portion 12 after the punching process is completed. The lower surface of the lower die pin 4 has a lower surface of the lower pin board B ₁ of the lower die 2. A stop ring 42 that abuts on the product part 12 separated from the waste part 13 is provided so that the rising limit thereof can be regulated.
Is mounted on the product pin 16 in its raised limit position, the working position 29 (of the lower mold 2).

Then, the product portion 12 is lifted by a rake-shaped carrying-out arm 27 of a carrying-out device (details are not shown) and carried out to the outside. The carry-out arm 27 may be configured to be capable of expanding and contracting in the horizontal direction and moving up and down in the vertical direction by, for example, a combination of a hydraulic or pneumatic drive source and an electric drive source. That is, after being inserted in the direction of arrow F, it is lifted in the direction of arrow G and then carried out in the direction opposite to arrow F. It should be noted that the present invention is not limited to the above-described embodiments, and design changes can be freely made without departing from the gist of the invention. For example, the upper mold 1 and the first template 7 (see FIGS.
In order to bring them closer to each other, both of them may be raised or lowered, or one of them may be raised or lowered. As for the lower mold, since the lower mold 2 and the second template 8 are brought close to each other (as in FIG. 1 to FIG. 2), even if they are moved up and down,
Alternatively, either one may move up and down.

[0032]

EFFECTS OF THE INVENTION (According to claims 1 and 2) Perforated line E
By separately retracting the interference pin 151 interfering with the upper retracted position 18 and the interference pin 152 interfering with the punching line E to the lower retracted position 19, the product portion of the sheet 11 is retracted.
Only the scrap pin 17 that does not interfere with 12 is the working position 28 of the upper mold 1.
The product part 16 is punched separately from the product part 12 while leaving only the product pin 16 which does not interfere with the waste part 13 of the sheet 11 at the working position 29 of the lower mold 2.
Without scratching the 12, the scrap portion 13 from the product portion 12,
It can be punched, separated and removed efficiently with a small number of working steps.

Pin boards B ₁ and B (according to claim 3)
By sliding ₁ relative to each other, the upper die pin 3 and the lower die pin 4 can be locked at once, and the work positions 28, 29, the upper retreat position 18, the lower retreat position 19 and the like can be obtained. Both pins 3 and 4 can be held quickly and reliably, and the efficiency of punching work is improved.

[Brief description of drawings]

FIG. 1 is a front view showing a main configuration of a residue removing device of the present invention.

FIG. 2 is a front view showing a state where the first and second templates for product parts are moved up and down.

FIG. 3 is a front view of a state in which the sheet is placed on the product pins.

FIG. 4 is a plan view showing a state in which the pins are locked on the pin board.

FIG. 5 is a cross-sectional view of the upper die showing a locked state of the upper die pin.

FIG. 6 is a plan view showing an example of a sheet.

FIG. 7 is a development view of a product department template.

FIG. 8 is an explanatory view of a locked state of a lower die pin and a carry-out device.

FIG. 9 is a partially enlarged view of the product department template.

[Explanation of symbols]

1 Upper die 2 Lower die 3 Upper die pin for punching 4 Lower die pin for punching 7 First template 8 for product section 2nd template 11 for product section 12 Sheet for punching 12 Product section 13 Dust section 15 Interference pin 16 Pin for product 17 Waste pin 18 Upper retreat position 19 Lower retreat position 21 Notch groove 22 Notch groove 28 Working position 29 Working position 31 Product part corresponding pin 41 Waste part corresponding pin 151 Interference pin 152 Interference pin E Punching line B ₁ pin board

Claims (3)

(57) [Claims] 1. An upper die 1 holds an upper die pin 3 for punching in a vertically movable / fixable manner, and a lower die 2 holds a lower die pin 4 for punching in a vertically movable / fixable manner. The first template 7 for product part is provided below the lower mold 2, and the second template 8 for product part is provided below the lower mold 2 so as to be able to move up and down. 1 by making them relatively close to each other, in the upper die pin 3, the product portion corresponding pin 31 corresponding to the product portion 12 of the sheet 11 to be punched interferes with the punching line E of the sheet 11. Together with 151, it is moved to the upper retreat position 18 so that only the scrap pin 17 that does not interfere with the punching line E is left at the working position 28 of the upper die 1, and the second template 8 for the product part and the second template 8 are used . Located above
By making the lower mold 2 relatively close to each other, the scrap portion corresponding pin 41 corresponding to the scrap portion 13 of the sheet 11 in the lower mold pin 4 interferes with the punching line E of the sheet 11. With the interference pin 152, leave it in the lower retracted position 19,
Only the product pin 16 which does not interfere with the punching line E is moved to the working position 29 of the lower mold 2, the sheet 11 is placed on the product pin 16, and the upper mold 1 and the lower mold 2 are moved relative to each other. A debris removing method characterized in that the debris portion 13 of the sheet 11 is separately punched from the product portion 12 by approaching movement. 2. An upper die 1 for holding a punching upper die pin 3 so as to be vertically movable and fixable, and a lower die 2 for holding a punching lower die pin 4 so as to be vertically moveable and fixable, and ,
Product part of the sheet 11 to be punched out of the upper die pin 3
The first product part corresponding to the product part corresponding pin 31 for moving the product part corresponding pin 31 from below to the upper retracted position 18 together with the interference pin 151 that interferes with the punching line E of the sheet 11. A template 7 and a second product template 8 for contacting only the product pins 16 out of the lower mold pins 4 that do not interfere with the punching line E of the sheet 11 from below and moving them to the working position 29 of the lower mold 2. , Above, above
Mold 1 and first template 7 for product part, lower mold 2 and product part
A debris removing device in which the second template 8 and the second template 8 are sequentially arranged from top to bottom . 3. The upper die 1 and the lower die 2 are a pair of pinboards B ₁ and B that can slide relative to each other.
Consists of _one, and the top and bottom of the upper die pins 3 and the lower mold pin 4, respectively, the pin notched grooves 21 and 22 for locked to the board B ₁ is formed by forming according to claim 2, wherein Scrap removal device.