JP3289434B2 - Cutting equipment for drawing products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an aluminum case for a capacitor, in which the depth of a drawn portion is large relative to the diameter.
The present invention relates to a so-called deep drawn product, and to a drawing device cutting device used when the deep drawn product is punched and cut into individual products.

[0002]

2. Description of the Related Art A conventional drawing apparatus for cutting a drawn product will be described below.

FIGS. 12 (a) and 12 (b) are a plan view and a cross-sectional view of a hoop material for explaining a drawing forming process using a progressive die.

[0004] In FIG. 12, reference numeral 41 denotes a state in which outer lance processing for performing a pair of arc-shaped punching in the width direction of the hoop material 1 is performed, and reference numeral 42 denotes feeding of the hoop material 1 after the outer lance processing 41 is performed. A state in which inner lance processing for performing a pair of arc-shaped punching in the direction is performed, and a state 43 is a state in which drawing processing has been performed after inner lance processing 42 has been performed. As is apparent from the drawn product 43, the material is drawn from the peripheral portion to the drawn portion 43a at the time of drawing, so that the drawn portion 43a is held by the joint sun 43b formed by lance processing. State. At this time, since the joining sun 43b is narrow and is unstable due to being pulled, the drawn portion 43a is often not upright with respect to the hoop material 1. In the conventional apparatus for cutting a drawn product, the drawn portion 43a is supplied in a state where it is tilted with respect to the hoop material 1, and is punched and cut into individual products.

[0005]

However, in the above-described conventional apparatus for cutting a drawn product, the drawn portion 43a is not upright with respect to the hoop material 1, or the joint sun 43b of the hoop material 1 is deformed. In order to supply the drawn product to the cutting device for the drawn product, the tip of the drawn portion 43a may be damaged when inserted into the cutting die, or the drawn portion 43a may be damaged.
This causes the occurrence of defects such as crushing, and in particular, the defects tend to increase as the processing speed increases, and the thirteen drawn parts 43a are aligned in the width direction of the hoop material 1. Even in the case of multi-cavity production, there is only a capability of about 200 pieces / min, and there is a problem that quality and productivity cannot be improved.

The present invention solves the above-mentioned conventional problems and eliminates the occurrence of defects when the drawn portion of the hoop material after drawing is cut and cut into individual products and increases the processing speed to improve productivity. It is an object of the present invention to provide an apparatus for cutting a drawn product that can be achieved.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an apparatus for cutting a drawn product according to the present invention guides a drawn portion of a hoop material which is drawn and supplied vertically to the hoop material. In this state, the joining part is formed by rolling a joint sun into a flat surface, and a cutting part that inserts the hoop material that has passed through the forming part, and punches and cuts the drawn part into individual products.

[0008]

With this configuration, the joint sun deformed by the drawing process is rolled into a flat surface while the drawn portion is guided vertically to the hoop material, and then put into the cut portion of the next process. The drawn portion can be inserted vertically, so that the drawn portion is not damaged or crushed, and the quality and productivity can be improved.

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front sectional view showing a configuration of a cutting device for a drawn product according to the embodiment, FIG. 2 is a forming section which is an AA section of FIG. 1, and FIG. 3 is a BB section of FIG. It shows a certain cutting part.

1 to 3, reference numeral 1 denotes a hoop material after drawing, 2 denotes a material guide attached to a draw stripper plate 3, and 4 denotes a hanger that pushes up the draw stripper plate 3 by a spring 5 held by a horo set 6. It is a bolt, and the hoop material 1 is supplied as described above. Reference numeral 7 denotes a flat push die bush for flattening the joint sun formed by the lance processing and the drawing processing and for erecting the drawing processing part with respect to the hoop material 1;
Is a knockout pin that projects the drawn portion from the flat push die bush 7, and 11 is a spring held by a holloset 12 to push up the knockout pin 10, which constitutes the lower surface side of the formed portion. Reference numeral 8 denotes a flat pressing punch for pressing the joint sun, and reference numeral 9 denotes a guide pin for guiding the inner diameter of the drawing portion, which constitutes the upper surface side of the forming portion. Reference numeral 13 denotes a float plate which floats the hoop material 1 and further inserts the hoop material 1 together with an individual cutting stripper plate 20 attached to the upper surface side of the cut portion. Reference numeral 14 denotes a stopper fixed to the float plate 13 by bolts 15. Is a spring held by the horo set 17 to push up the float plate 13; 18 is an individual cutting die for cutting the drawn portion into individual pieces together with the individual cutting punch 19 attached to the upper surface side of the cutting portion; The above constitutes the lower surface side of the cutting section. 21 is a suspension bolt holding the individual cutting stripper plate 20, 22 is a spring that pushes down the individual cutting stripper plate 20 via the suspension bolt 21, and 23 is a holo set holding the spring 22. It constitutes the upper surface side. 24 is the lower die holder 2
A die plate 26 is connected to a punch plate 26 and a punch plate 26 is connected to a punch holder 27 on the upper surface side.

The apparatus for cutting a drawn product according to the present invention thus configured will be described below in the order of working steps with reference to FIGS.

FIG. 4 shows a state in which the hoop material 1 after drawing is sent to the forming section, and the flat pressing punch 8 and the guide pin 9 attached to the upper die on the upper surface are in the process of descending.

FIG. 5 shows that the upper die is further lowered, and
Shows the state in which the guide of the drawn portion inclined with respect to the hoop material 1 has been started and hits the inner peripheral surface of the drawn portion.

FIG. 6 shows that the drawing stripper plate 3 is pushed down from the punch plate 26 holding the flat pressing punch 8, and at the same time, the flat pressing punch 8, the guide pin 9 and the hoop material 1 are also lowered. This shows a state where the flat push die bush 7 has hit the rounded portion.

FIG. 7 shows that the punch plate 26, the flat push punch 8, the guide pin 9, the squeeze stripper plate 3, and the hoop material 1 are further lowered from the above-mentioned FIG. Hoop material 1
5 shows a state of the bottom dead center in which the drawn portion is erected.

FIGS. 4 to 7 describe the movement of the flattening of the joint splice and the process of correcting the degree of uprightness of the hoop material 1 in the drawn portion.

Next, a description will be given of a cutting step of cutting the drawn portion of the hoop material 1 having been subjected to the above-described correction processing into individual pieces, with reference to FIGS.

FIG. 8 shows a state in which the hoop material 1 having been subjected to the correction processing of FIGS. 4 to 7 is sent to a cutting section for cutting the drawn section into individual pieces.

FIG. 9 shows that the piece cutting punch 19 and the piece cutting stripper plate 20 are lowered, the hoop material 1 is sandwiched between the piece cutting stripper plate 20 and the float plate 13, and the tip of the piece cutting punch 19 is further moved. 5 shows a state in which the inner peripheral surface of the drawing portion is guided.

FIG. 10 shows an individual cutting punch 1 according to FIG.
9, individual cut stripper plate 20, hoop material 1,
This shows a state immediately before the float plate 13 is further lowered, the drawn portion is inserted into the individual piece cutting die 18, and individual piece cutting is started.

FIG. 11 shows an individual cutting punch 1 from FIG.
9 further lowers, and shows the state of the bottom dead center at which the individual cutting of the drawn portion is completed.

With the above configuration, the drawn-down portion can be correctly inserted into the individual cutting die 18 as shown in FIG. 10 after correcting the collapsed portion in advance. In addition, the problem that the tip of the drawn portion is damaged or the drawn portion is crushed, which is a conventional problem, is solved. Therefore, conventionally, the processing speed could be increased only at about 200 pieces / min in the case of multi-cavity in which 13 drawn sections were aligned in the width direction of the hoop material 1, but 600 to 800 pieces / minute with the same specification. Even if the processing speed is increased to the minimum, the same level of quality can be secured, and three to four times the productivity can be obtained at once.

In the above-described embodiment, the number of the drawn portions is one. However, it is needless to say that the number of drawn portions can be increased to two or three or more. .

[0025]

As described above, since the apparatus for cutting a drawn product according to the present invention is constituted as described above, the uprightness of the drawn portion with respect to the hoop material is corrected in advance, and then the individual cuts are performed. This greatly contributes to cutting at an extremely high speed of 3 to 4 times as compared with the related art without damaging or crushing the tip.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a configuration of a drawing device cutting apparatus according to an embodiment of the present invention.

FIG. 2 is a side cross-sectional view of a molded part showing a cross section AA in FIG. 1;

FIG. 3 is a side cross-sectional view of a cut portion showing a cross section BB of FIG. 1;

FIG. 4 is an essential part cross-sectional view showing a state in which a hoop material that has been drawn is supplied to a forming part of the embodiment.

FIG. 5 is a sectional view of a main part showing a state in which the upper die of FIG. 4 has started to descend;

FIG. 6 is a sectional view of a main part showing a state in which the upper die is further lowered than in FIG. 5;

FIG. 7 is a sectional view of a main part showing a state of a bottom dead center in the molded part.

FIG. 8 is an essential part cross-sectional view showing a state in which the hoop material after the rolling processing of the forming part is supplied to the cutting part of the embodiment.

FIG. 9 is a sectional view of a main part showing a state where the upper die of FIG. 8 has started to descend;

FIG. 10 is a cross-sectional view of a main part showing a state immediately before cutting, in which the upper mold is further lowered than in FIG. 9;

FIG. 11 is an essential part cross-sectional view showing a cutting state of the cutting part.

12A is a plan view of a hoop material for explaining a drawing forming process using a progressive die. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoop material 2 Material guide 3 Drawing stripper plate 4,21 Hanging bolt 5,11,16,22 Spring 6,12,17,23 Holo set 7 Flat pressing die bush 8 Flat pressing punch 9 Guide pin 10 Knockout pin 13 Float plate 14 Stopper 15 Bolt 18 Piece cutting die 19 Piece cutting punch 20 Piece cutting stripper plate 24 Die plate 25 Die holder 26 Punch plate 27 Punch holder

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Masatoshi Tadashi 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-60-6299 (JP, A) JP-A-56- 17131 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21D 22/00-26/14 B21D 28/02 B21D 35/00

Claims (1)

(57) [Claims] An upper surface is provided with a forming punch for rolling a flat portion of a peripheral edge while guiding an inner peripheral surface of a drawn portion of a hoop material which is drawn and supplied. A forming part provided with a forming die for rolling the flat part of the periphery while guiding the outer peripheral surface, and a cutting punch and a cutting die for obtaining an individual piece by cutting a drawn part of the hoop material passing through the forming part are described above. An apparatus for cutting a drawn product comprising cutting sections provided on the upper surface side and the lower surface side, respectively.