Punching blade and punched blank for forming a case
A blanking and blanking technology, applied in the manufacture of rigid/semi-rigid containers, paper/cardboard containers, containers, etc., can solve the problems of increased cost, reduced strength, high positioning accuracy, etc., to prevent scratching hands and make production simple , soft and smooth feel
Active Publication Date: 2012-07-11
NIPPON DIE STEEL CO LTD
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Problems solved by technology
[0011] However, in the above-mentioned cardboard, since the range of the squeezed part is large, there is a possibility that the strength at the time of sealing will decrease.
Also, due to the addition of crease lines, it is necessary to Figure 11 The shown blanking die 22 processes the installation grooves of the grid-shaped pressing pieces. On the other hand, it is necessary to process the fitting grooves on the panel 20 at the position facing the grid-shaped pressing pieces, which increases the cost. The problem that the installation of punching machine requires high positioning accuracy
Method used
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[0035] Embodiments of the present invention will be described below based on the drawings. Such as figure 1 As shown in (1A) and (1B), the blade plate 10 is composed of a strip-shaped steel plate having a certain length. When the height is H and the thickness (thickness) is T, then H is 23.5 mm. left and right, and T is in the range of 0.45 mm to 1.8 mm.
[0036] A pair of chamfers 11 inclined in opposite directions are formed on one side in the vertical direction of both side surfaces of the blade plate 10 . The inclination angle α of the pair of chamfers 11 is substantially the same, and by forming the pair of chamfers 11 , a cutting edge 12 is provided on one side edge of one side of the blade plate 10 .
[0037] Such as figure 2 As shown in (2C) and (2E), the cutting edge 12 is only formed with a fine wave edge 12a at the chamfer 11, and the fine wave edge 12a extends over the entire length of the blade plate 10 in the longitudinal direction within the thickness range...
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Abstract
Provided is a die-cutting blade capable of forming smooth die-cut lines in case-forming blanks which are less likely to injure hands, even if these case-forming blanks are touched by the hands. A strip-plate-shaped blade plate (10) made of a steel plate is provided with a pair of chamfers (11) formed on the opposite side surfaces of the blade plate, respectively, so as to extend from one side edge of the blade plate at substantially equal inclination angles. The chamfers (11) define a cutting edge (12) along the one side edge. The cutting edge (12) has a composite wave pattern formed from a small wave pattern (12a) which is bent to have a wave shape within the range of the thickness of the blade plate (10), and a large wave pattern (12b) formed by a large undulation in the small wavy edge (12a) toward the opposite side surfaces of the blade plate over the entire length thereof within the range of the thickness of the blade plate (10), in order to provide smooth die-cut lines.
Description
technical field [0001] The present invention relates to a punching blade for punching a cardboard sheet, cardboard, etc. into a predetermined shape, and a punching blank for forming a box. Background technique [0002] Commonly used multi-packs that collectively pack multiple packaging objects such as cans and bottles filled with beverages such as beer Figure 10 Box K is shown for packaging. In addition, the packaging box K is brought into an assembled state by bending and bonding blanks formed by punching cardboard sheets. [0003] Figure 9 A blank B as a material for forming the packaging box K is shown. This blank B is constituted by alternately and continuously providing two pairs of side panels 1 and 2 with different width dimensions along one direction via a vertical line a, and on the side edge of the narrow side panel 1 located on one side via the vertical line a. And the joint pieces 3 are arranged continuously, and the inner wing boards 4 are arranged continuo...
Claims
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IPC IPC(8): B26F1/44B31B1/16B31B50/16
CPCB26F1/44B65D5/42B26F2001/4481B31B2201/252B31B2203/066B26D1/0006B26D2001/006B65D5/0227B26F2001/4472B31B2100/00B31B50/252B31B2110/35Y10T83/929Y10T83/4801B31B50/142
Inventor 竹内孝之
Owner NIPPON DIE STEEL CO LTD