JP2574388Y2 - Molded sheet punching die - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded sheet punching die for dividing one large molded sheet in which food trays and the like are arranged vertically and horizontally into individual trays.

[0002]

2. Description of the Related Art In supermarkets and the like, often divided foods are sold on trays (plates) made of resin sheets. For these trays, trays manufactured by vacuum forming, vacuum pressure forming or the like are used. Such a tray is usually formed as one large formed sheet 10, as shown in the perspective view of FIG.

[0003] The molded sheet 10 is punched out after molding, and divided into individual trays 11, 11,.

[0004] The punching of the molded sheet 10 is performed as shown in FIG.
A punching die as shown in FIG. This punching die has a substrate 21 composed of six support plates 21a to 21f.
A punching blade 12 is provided in conformity with the planar shape of FIG. Between the support plates 21a to 21f, gap members 3a to 3g for adjusting the gap between these support plates are sandwiched.

FIG. 7 (b) is an enlarged perspective view of a part of the molded sheet punching die of FIG. 7 (a). As shown in FIG. 7 (b), the punching blade 12 is embedded and fixed in the substrate 21, and each support plate from which the molded sheet 10 shown in FIG. 6 is cut into individual trays 11, 11,. 21a-
As shown in FIG. 7A, 21f are fixed to each other by a fixing bracket 22. FIG. 8 shows details of the fixture 22. The fixing bracket 22 includes a double screw bolt 14 and a nut 16 screwed to the screw portions at both ends of the double screw bolt 14.
a, 16b and washers 15a, 15b. The same right-hand thread is screwed on each end of both screw bolts 14.

[0006] As shown in FIG. 7 (b), the fixture 22 has two long holes 17 a and 17 b formed in the substrate 21.
And housed in the groove 17c. Slots 17a, 17b
Are provided on the support plates 21a and 21b, respectively, and penetrate the back surface. A groove 17c is provided on the back surfaces of the support plates 21a and 21b so as to intersect these parallel elongated holes 17a and 17b. The groove 17c is formed over the support plates 21a and 21b and does not reach the surfaces of the support plates 21a and 21b. The nut 16a and the washer 15a of the fixture 22 are accommodated in the elongated hole 17a, and the nut 16b and the washer 15b are accommodated in the elongated hole 17b. By rotating the nuts 16a, 16b with a spanner, respectively, the support plates 21a,
21b are fixed to each other with the gap member 3a interposed therebetween.

FIG. 5 is a partially enlarged view of the gap member 3a.
The gap member 3a has the same number of recesses 8, 8,...
Attached from the back. The sheet 10 of FIG. 6 described above.
Is not always constant due to differences in heat shrinkage due to differences in raw resin, variations in manufacturing conditions, and the like, and dimensional errors may occur for each manufacturing lot. This dimensional error is, for example, a maximum of about 4 for a sheet having a side of about 2000 mm.
mm. The gap members 3a to 3g are provided to change the interval between the punching blades 12 according to such a dimensional error. That is, the gap between the punching blades 12 can be changed by changing the thickness of the gap members 3a to 3g or the number of sheets to be sandwiched.

[0008]

[Problems to be solved by the invention] FIGS. 7 (a) and 7 (b)
In the case of the molded sheet punching die, the nut 1
By tightening the 6a and 16b in directions approaching each other, the support plates 21a to 21f can be easily fixed. However, when replacing the gap members 3a to 3g or increasing or decreasing the number of the gap members 3a to 3g according to the dimensional error of the molded sheet 10 in FIG. 6, even if the nuts 16a and 16b of the fixing bracket 22 are loosened in the direction away from each other, the punching blade 12 By existence
The gap between the support plates 21a to 21f cannot be easily widened. Therefore, the support plates 21a to 21a-2
If the gap of 1f has to be opened, the molded sheet 1
If the dimensional error of 0 frequently changes, the gap member 3
The work of replacing a to 3g or increasing or decreasing the number of sheets becomes very complicated.

The present invention solves such a conventional problem. An object of the present invention is to easily replace a gap member or increase or decrease the number of sheets even when a dimensional error of a formed sheet occurs. To provide a molded sheet punch that can be formed.

[0010]

According to the present invention, there is provided a molded sheet punching die comprising: a substrate formed by a plurality of support plates;
Punching blades provided at predetermined intervals on the substrate, a gap member that changes the spacing between the punching blades by adjusting the gap between the support plates, and screwing a right-hand screw and a left-hand screw at both ends, respectively. A thrust member having both screw bolts having a hexagonal portion in the center and a pair of thrust plates screwed to the right-hand screw and the left-hand screw, respectively, wherein the pair of thrust plates are adjacent to the two support plates; Are stored in a thrust plate storage hole provided in each of the two, the hexagonal portion is stored in a hexagonal portion storage hole provided in any of the two support plates, and the two screw bolts are provided in the thrust plate storage hole and the thrust plate storage hole. It is stored in a groove provided across the hexagonal part storage hole, and by rotating to one of the hexagonal parts, the pair of thrust plates are moved in a direction approaching each other,
The two adjacent support plates can be fixed to each other with the gap member interposed therebetween, and by rotating the hexagonal portion to the other, the pair of thrust plates are moved away from each other, so that the two adjacent The gap between the support plates is widened so that the gap member can be taken out.

[0011]

In the molded sheet punching die having the above construction, punching blades are provided at predetermined intervals on a substrate comprising a plurality of support plates, and a gap member for adjusting the gap between the support plates is provided between the support plates. Is provided. Each support plate is fixed to each other by a thrust member. The thrust member has a right-hand screw and a left-hand screw at both ends, and has a double-screw bolt provided with a hexagonal portion at the center, and a thrust plate is screwed to each of the right-hand screw and the left-hand screw. Each thrust plate is accommodated in a thrust plate accommodation hole provided in each of two adjacent support plates. With this configuration, when the hexagonal portion is rotated, each thrust plate moves in a direction approaching or moving away from each other, so that not only the two adjacent support plates are fixed to each other by the thrust plate with the gap member interposed therebetween, but also In addition, it is easy to widen the gap between these support plates.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of a front side of a molded sheet punching die according to an embodiment of the present invention.

FIG. 6 shows a molded sheet punching die of this embodiment.
Is to be cut into individual trays 11, 11... This molded sheet punching die has a substrate 1, and the substrate 1 is composed of six support plates 1a to 1f. The gap members 3a to 3g are sandwiched between the support plates 1a to 1f.
Are fixed to each other by thrust fittings 2, 2,... Functioning as thrust members. The punching blades 12 are formed in a large number of rectangular shapes with rounded corners on the substrate 1 composed of the support plates 1a to 1f fixed as described above.

FIG. 2A is an enlarged perspective view of the molded sheet punching die of this embodiment. FIG. 2B is an enlarged plan view of the back surface. As shown in FIGS. 2A and 2B, the punching blade 12 is embedded and fixed in the substrate 1 and protrudes from the substrate 1 on the front surface side of the substrate 1 but does not protrude on the rear surface side. FIG. 4 shows details of the thrust fitting 2 in which the formed sheet 10 shown in FIG. 6 is cut into individual trays 11, 11,... By the tip of the punching blade 12 protruding from the substrate 1. The thrust fitting 2 includes two screw bolts 4 each having a hexagonal portion 5, and thrust plates 6 a and 6 b screwed to screw portions 4 a and 4 b at both ends of the two screw bolts 4. A right-hand screw and a left-hand screw are screwed into the screw portions 4a, 4b, respectively, and the thrust plates 6a, 6b move in directions approaching each other or moving away from each other depending on the rotation direction of the two screw bolts 4.

The thrust fitting 2 is shown in FIGS. 2 (a) and 2 (b).
As shown in FIG. 3, three long holes 7a, 7
b, 7c and the groove 7d. Slots 7a, 7
c is a thrust plate storage hole, and a long hole 7b is a hexagonal portion storage hole. Of these long holes, the long holes 7a and 7b are provided in the support plate 1a, and the long holes 7c are provided in the support plate 1b. The holes 7a and 7b are formed so as to penetrate from the front surface to the back surface of the support plates 1a and 1b, respectively. Have been. Crossing these three parallel elongated holes 7a, 7b, 7c, grooves 7d are formed in support plates 1a, 1b.
b. The grooves 7d are for supporting plates 1a and 1b.
And does not reach the surfaces of the support plates 1a and 1b. The thrust fitting 2 is housed so that the hexagonal portion 5 is located in the elongated hole 7b, the thrust plate 6a is located in the elongated hole 7a, the thrust plate 6b is located in the elongated hole 7c, and both screw bolts 4 are located in the groove 7d. Is done. By rotating the hexagonal part 5 of the thrust fitting 2 housed in this way to one side, the thrust plates 6a and 6b move in directions approaching each other.
As a result, the support plate 1a and the support plate 1b
Are fixed to each other. Further, by rotating the hexagonal portion 5 of the thrust fitting 2 in the opposite direction, the thrust plate 6 is rotated.
a, 6b move away from each other. This allows
The gap between the support plate 1a and the support plate 1b is widened, and the gap member 3a can be taken out.

The gap member 3a is the same as that shown in FIG. FIG. 3 shows a state in which the gap member 3a is attached to the substrate 1, in which the support plate 1b in FIG. 2A is removed. As shown in FIG. 3, the gap member 3a has a width substantially corresponding to the thickness of each of the support plates 1a to 1f, and concave portions 8, 8,...

The gap member 3a is attached from the back of the support plates 1a, 1b. Are provided at positions corresponding to the intersecting thrust fittings 2, and are provided in the same number as the number of thrust fittings 2.

In the molded sheet punching die of this embodiment, the gap between the support plates 1a and 1b can be changed by appropriately changing the thickness of the gap member 3a or by changing the number of the gap members 3a. it can. In order to replace the gap member 3a or increase or decrease the number of the gap members 3a, the hexagonal portion 5 of the thrust fitting 2 may be rotated using a spanner or the like to move the thrust plates 6a and 6b away from each other. Thereby, the gap between each support plate is widened. At this time, since the thrust plates 6a and 6b are screwed into the screw portions 4a and 4b of the two screw bolts 4, the gap between the support plates can be widened against the presence of the punching blade 12 even if it exists. Next, the gap member is replaced or the number is increased or decreased, and the hexagonal portion 5 is rotated again to move the thrust plates 6a and 6b so as to approach each other. Thus, the support plates 1a and 1b are fixed to each other.

In the above description, the support plates 1a, 1a,
Although only the portion extending to 1b has been described, the same applies to other portions. In this embodiment, the slots 7a, 7a
Although the case where b and 7c penetrate to the back surface has been described, the groove shape may not penetrate to the back surface.

[0020]

[Effects of the Invention] In the molded sheet punching die of the present invention, not only the fixing of each support plate but also the widening of the gap between the support plates can be easily performed by moving the thrust plate by rotating the hexagonal portion of the thrust member. Exchange of the gap member or increase / decrease of the number of sheets can be easily performed. Therefore, the interval between the punching blades on the substrate can be easily changed according to the dimensional error of the formed sheet.

[Brief description of the drawings]

FIG. 1 is a plan view of a front side of a molded sheet punching die according to an embodiment of the present invention.

FIG. 2A is a partially enlarged perspective view of the punching die of FIG. 1;
FIG. 2B is a partially enlarged plan view of the back surface of the punching die of FIG. 1.

FIG. 3 is a partially enlarged perspective view of the punching die of FIG. 1;

FIG. 4 is a perspective view of a thrust fitting according to an embodiment of the present invention.

FIG. 5 is a partially enlarged view of a gap member according to an embodiment of the present invention.

FIG. 6 is a perspective view of a molded sheet.

FIG. 7A is a plan view of a conventional molded sheet punching die, and FIG. 7B is a partially enlarged perspective view of the punching die of FIG.

FIG. 8 is a perspective view of a thrust fitting used for the molded sheet punching die of FIG. 7 (a).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Substrate 1a-1f ... Support plate 2 ... Thrust metal fitting (thrust member) 3a-3g ... Gap member 4 ... Double screw bolt 5 ... Hex. ... Elongated hole (hexagonal storage hole) 7d ... Groove 10 ... Molded sheet 11 ... Tray 12 ... Punching blade

Claims (1)

(57) [Scope of request for utility model registration] A substrate constituted by a plurality of support plates;
Punching blades provided at predetermined intervals on the substrate, a gap member that changes the spacing between the punching blades by adjusting the gap between the support plates, and screwing a right-hand screw and a left-hand screw at both ends, respectively. A thrust member having both screw bolts having a hexagonal portion at a central portion and a pair of thrust plates screwed to the right-hand screw and the left-hand screw, respectively, wherein the pair of thrust plates are adjacent to the two support plates; Are stored in a thrust plate storage hole provided in each of the two, the hexagonal portion is stored in a hexagonal portion storage hole provided in any of the two support plates, and the two screw bolts are provided in the thrust plate storage hole and the thrust plate storage hole. The pair of thrust plates are housed in a groove provided across the hexagonal storage hole, and the pair of thrust plates are moved in a direction approaching each other by rotation to one of the hexagonal portions, so that the adjacent two
The two support plates can be fixed to each other with the gap member interposed therebetween, and by rotating the hexagonal portion to the other, the pair of thrust plates are moved away from each other, so that the gap between the two adjacent support plates can be changed. A molded sheet punching die, which is configured so that the gap member can be taken out by expanding the gap.