JPS58171298A - Skimmer form - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scraping mold. More specifically, the present invention relates to a new shaving die that can be easily used for various punching blanks without the need for complicated bin setting in a male dies.

Conventionally used automatic flat plate punching machines punch out cardboard with a specified cutting die, and then cut out unnecessary parts such as the periphery or between the blanks, or holes (hereinafter referred to as "waste parts").
It comes with a scum remover that removes or removes such things. The scraping operation is carried out using a scraping mold,
This scraping die consists of a combination of an upper die (male die) with pins and a lower die (female die) cut out at the position corresponding to the scraping part. It is sandwiched between a mold and a bottle in the upper mold to push down only the part of the cardboard to be removed to remove the residue.

Therefore, it is necessary to accurately attach a large number of bins to the upper mold for scraping, and usually the plywood for the upper mold is removed from the scraping machine and the pins are planted on the presetting table. This work requires a great deal of effort and time.

When using a broken, adjustable bottle or Ficklock pin, if the scraps to be removed are close to each other and there are a large number of scraps, it is structurally impossible to attach pins corresponding to the individual scraps. be.

The present invention discloses a new waste removal mold that eliminates the drawbacks of these conventional techniques, and its purpose is to improve the shape of the waste portion without having to completely fill the bottle, which is complicated as described above. To provide a scum removing mold which can be used as is or by simple adjustment even if the values are different.

That is, the scum removing mold of the present invention includes an upper mold plate which is formed by laminating an upper mold substrate and a buffer sheet, and has a large number of through holes formed almost perpendicularly to the surface thereof, and the upper mold plate - H. Air chamber? It consists of an upper mold consisting of a lid plate to be formed; and a lower mold having a cutout hole at a position corresponding to the scrap portion of the blank.

When actually using the scraping mold having the above configuration, compressed air is sent into the air chamber formed between the upper mold substrate and the lid plate, and the air is ejected from the through hole. Air pressure can remove the crumbs from the blank.

Furthermore, if the areas of the scraps differ greatly, the air pressure applied to the large scraps and the small scraps will be significantly different. It is also possible to affix it over the through hole corresponding to the left part, or to attach the entire plug to the through hole at that position.

Furthermore, in the case where a small number of through holes correspond to a small portion of debris, a sleeve having three eccentric holes can be attached in order to adjust the air ejection position.

Furthermore, some of the nicks (joints) in the scraps were cut off.
Prevents scum from hanging in the hole of the blank1.
To ensure complete removal of debris, a locking piece can be attached to the lower edge of the cutout hole in the lower die.

The present invention will be explained in more detail below using Examples.

As shown in FIGS. 1 and 2, the scrap removal mold 1 of the present invention includes an upper mold plate 4 consisting of a mold substrate 2 and a buffer sheet 3;
It consists of a lid plate 5, an upper mold 6 and a lower mold 7.

The upper mold substrate 2 may be made of plywood having an appropriate thickness, for example, 16 mm, but it may be made of other materials such as a synthetic resin plate or a metal plate. A buffer sheet 3 is attached to the lower surface of the upper mold substrate 2. This sheet serves as a cushion when holding the blank 8 (described later) between it and the lower mold 7.
It can be formed from a rubber plate, a foamed synthetic resin sheet, etc. A large number of through holes 9 are formed in the surface of the upper mold plate 4 made up of the substrate 2 and the sheet 3. The diameter of the through holes 9 is suitably about 3 to 10 degrees, and their arrangement is arbitrary, but it is desirable to arrange them as densely as the strength of the upper mold substrate 2 allows. In the illustrated embodiment, the diameter of the through hole 9a of the buffer sheet 3 is slightly larger than the diameter of the through hole 9 of the upper mold substrate 2, but there is no space between the upper mold 6 and the lower mold 7. The through-holes 9 and 9a may have the same diameter as long as the buffer sheet 3 is not crushed and spread laterally to block the through-hole 9a when the buffer sheet 8 is pinched.

A lid plate 5 made of a metal plate or the like is attached to the upper side of the upper mold plate 4 to form an air chamber 10. A nozzle 11 for introducing air is attached to the cover plate 6 at an appropriate position. The number of nozzles 11 is 1
However, in order to increase the air pressure within the air chamber 10 instantly and uniformly, a plurality of nozzles 11 may be provided.

The lower mold 7 has a cutout hole 12 at a position corresponding to one sludge portion, like the lower mold of a normal sludge removal mold.

In actual use, the upper mold 6 and the lower mold 7 are respectively attached to predetermined parts of the scum remover, and the nozzle 11 is supplied with compressed air from an air conditioner or the like. connection to a power source (not shown).

Next, the blank 8 after die cutting is sandwiched between the upper die 6 and the lower die 7. Then, from all compressed air nozzles 11 to air chamber 1
By sending the air into the air chamber 0, the air in the air chamber is ejected from the through holes 9, 9a as shown by the arrows in FIG.
Push it down. On the other hand, since the blank 8 is held down from below by the lower die 7 in the portion other than the scrap portion of the blank 8, air will not blow out even if there are through holes 9, 9a. It remains on the lower die 7.The pressure inside the air chamber 10 required for the scrap removal operation varies depending on the width and height of the air chamber, the area of the scrap part, the material of the blank, the number of connections, etc. It is sufficient to perform a preliminary test to determine the optimum value.Also, when a fraction of (/1) is removed by air pressure, the pressure inside the air chamber 10 will drop rapidly, so the area of the air chamber 10 should be When the height is made relatively small, it is desirable to provide a large number of nozzles 11'!i- in order to make the air pressure in the air chamber 10 rise uniformly and rapidly.

The air pressure that acts on the above-mentioned scum removal is proportional to the area of the scum part (the number of through holes), but the force required for scum removal is the sum of the contact resistance around the scum part and the cutting resistance of the connection. becomes. Therefore, large-area debris is removed more quickly, and the air is chased through the through holes 9, 9a in that area, causing a sudden drop in the pressure in the air chamber, making it impossible to remove small-area debris. .

If the size of the debris is significantly different,
As shown in FIG.
Paste. In that case, the peripheral edge of the scrap 13a is appropriately cut off to adjust the working through hole 9.9a'i.

Further, if the blank 8a from which the residue has already been removed is pasted in advance, it is convenient for positioning for pasting the residue 13a, but this is not always necessary.

Furthermore, when closing the through holes 9, 9a in a large area, the entire plug 14 as shown in FIG. 4 can be used.

The stopper 14 is a screw-shaped member made of metal, synthetic resin, or the like.

7- If the area of the shredded dregs is small and the position of the through hole should be adjusted to near the center of the dregs, a sleeve 15 having an eccentric hole 16 as shown in FIGS. 5 and 6 may be used. It can also be attached to the through hole 9.

Note that reference numeral 17 is a protrusion that prevents the sleeve 15 from rotating in the through hole 9, and is designed to bite into the inner wall surface of the through hole 9 when installed.

Furthermore, the cut part cut out with the cutting die is not completely cut with a tongue, and there are connections here and there. This connection acts like a hinge, and scraps may not be cut off and may hang onto the blank at the connection. If the blank is transported to the Puri-41J part in such a state, there is a risk that the blank will be torn from the joints on the way, leading to the occurrence of defective products. Furthermore, even if the blank is not torn at the joint, scraps carried along with the blank to the delivery part must be removed by hand, causing problems on the production line.

In order to completely prevent such obstacles, in the present invention,
As shown in FIG. 7, a scrap locking piece 18 is attached to the lower edge of the cutout hole 12 of the lower mold 7. The position at which this locking piece 8-stop 18 is attached is on the opposite side of the side where the dregs occur. There are no particular restrictions on the size, material, etc. of the locking piece 18, for example, 1 cm x 4 cm x 0.2 cm.
All spring materials such as mm (T) can be used.

By attaching the scrap locking piece, the scraps 13 connected by the connection 19 do not hang down vertically from the connection 19, but the free end of the scrap is supported by the locking piece 18, receives air pressure as it is, and ends up. At this time, the connection 19 is also cut, allowing the debris 13 to fall downward.

As described above, the scrap removal mold of the present invention has a simple structure, is easy to operate, and is reliable in use.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the upper mold of the scum removing mold of the present invention, FIG. 2 is a partial vertical sectional view of the scum removing mold, FIG. 3 is a partial longitudinal sectional view of another embodiment of the scum removing mold, and FIG. The figure is an enlarged sectional view of the plug, No. 5
The figure is an enlarged sectional view of the sleeve, and Figure 6 is the fifth section of the sleeve.
A horizontal cross-sectional view taken along the line Vl--Vl in FIG. 7, and a partial vertical cross-sectional view of another embodiment of the scraping die of the present invention. 1... Scrap removal mold; 2... Upper die substrate; 3... Buffer sheet; 4... Upper die plate; 5... Lid plate;
6: Upper mold; 7: Lower mold; 8: Blank; 9.9a: Through hole; 10: Air chamber; 11
... Nozzle; 12... Cutout part; 13, 13a.
... Dregs; 14... Plug; 15... Sleeve; 18.
・Applicant for the patent for the dross locking piece Katayama Nukimata Seisakusho Co., Ltd. Representative Patent attorney Hajime Maetaka 1 11-

Claims (5)

[Claims] (1) An upper mold plate made by laminating an upper mold substrate and a buffer sheet, and having a large number of through holes formed almost perpendicularly to its surface, and a cover plate that forms an air chamber on the upper nuclear mold plate. An upper mold consisting of; and a lower mold having a cutout hole at a position corresponding to the edge part of the blank. (2) The dross removal mold according to claim 1, characterized in that a sludge whose peripheral edge portion has been appropriately cut is pasted at a position corresponding to the sludge portion of the upper mold substrate. (3) Among the through holes located at positions corresponding to the scrap portion of the upper mold substrate, the through holes other than the through holes located at the peripheral edge of the scrap portion are provided with plugs. The dross removal mold described in section. (4) The scraping mold according to claim 1, characterized in that a sleeve having an eccentric hole is attached to the through hole located at a position corresponding to the scraping portion of the upper die substrate. (5) An upper mold plate formed by laminating an upper mold substrate and a buffer sheet, and having a large number of through holes formed almost perpendicularly to its surface, and a lid plate that forms an air chamber on the upper nuclear mold plate. an upper mold consisting of; a lower mold having a cutout hole at a position corresponding to the scrap portion of the blank and a scraper piece attached at an appropriate position on the lower edge of the cutout hole; .