JPH0627100U - Molded sheet punching die - Google Patents

Abstract

(57) [Summary] [Object] To provide a molded sheet punching die that can easily replace the gap member or increase or decrease the number of sheets even if a dimensional error occurs in the molded sheet. [Structure] A plurality of support plates 1a to 1f constituting a substrate 1 are fixed by a thrust member 2 with gap members 3a to 3g interposed therebetween. The thrust member 2 has both screw bolts 4 each having a right-hand screw and a left-hand screw at both ends thereof and a hexagonal portion 5 provided at the center thereof.
It is composed of a pair of thrust plates 6a, 6b screwed into the right screw and the left screw, respectively. Each thrust plate 6a, 6b is housed in an elongated hole 7a, 7c provided in each adjacent supporting plate, and the hexagonal portion 5 is housed in an elongated hole 7b. When the hexagonal portion 5 is rotated once, the thrust plates move in the direction of approaching each other, and the adjacent support plates are fixed to each other with the gap member interposed therebetween. Further, by rotating the hexagonal portion 5 in the opposite direction, the thrust plates 6a, 6b move away from each other, the gap between the adjacent support plates becomes large, and the gap members 3a to 3g can be easily replaced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a molded sheet punching die for dividing a single large molded sheet in which food trays and the like are arranged vertically and horizontally into individual trays.

[0002]

[Prior art]

 In supermarkets and the like, small pieces of food are often sold on a tray made of resin sheets. As these trays, those manufactured by vacuum forming, vacuum pressure forming, etc. are used. Such a tray is usually molded as one large molded sheet 10 as shown in the perspective view of FIG.

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

A punching die as shown in FIG. 7A has been conventionally used for punching the molded sheet 10. This punching die has a substrate 21 composed of six support plates 21a to 21f, and a punching blade 12 is provided on the substrate 21 in accordance with the planar shape of each tray 11. Gap members 3a to 3g for adjusting a gap between the support plates 21a to 21f are sandwiched between the support plates 21a to 21f.

FIG. 7B shows an enlarged perspective view of a part of the molding sheet punching die of FIG. 7A. As shown in FIG. 7 (b), the punching blade 12 is embedded and fixed in the substrate 21, and the molded sheet 10 shown in FIG. 6 is cut into individual trays 11, 11 ... The support plates 21a to 21f are fixed to each other by a fixing member 22, as shown in FIG. FIG. 8 shows details of the fixing bracket 22. The fixing member 22 includes both screw bolts 14, nuts 16a and 16b that are screwed into the screw portions at both ends of the screw bolts 14, and washers 15a and 15b. The same right screw is screwed on both ends of both screw bolts 14, respectively.

As shown in FIG. 7B, the fixture 22 is housed in the two slots 17 a and 17 b formed in the substrate 21 and the groove 17 c. The long holes 17a and 17b are provided in the support plates 21a and 21b, respectively, and penetrate the back surface. Grooves 17c are 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 across 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 fixing member 22 are housed in the elongated hole 17a, and the nut 16b and the washer 15b are housed in the elongated hole 17b, respectively. By rotating the nuts 16a and 16b with a spanner, the support plates 21a and 21b are fixed to each other via the washers 15a and 15b with the gap member 3a interposed therebetween.

FIG. 5 shows a partially enlarged view of the gap member 3a. The gap member 3a has the same number of recesses 8, 8 ... As the number of the fixed metal fittings 22 on the upper long side thereof, and is mounted from the back surface of the support plates 21a, 21b. The size of the sheet 10 shown in FIG. 6 described above is not always constant due to a difference in heat shrinkage ratio due to a difference in raw material resin, variations in manufacturing conditions, and the like, and a dimensional error may occur in each manufacturing lot. This dimensional error is, for example, about 4 mm at maximum in the case of a sheet having one side of about 2000 mm. The gap members 3a to 3g are provided to change the distance between the punching blades 12 according to such dimensional error. That is, the interval between the punching blades 12 can be changed by changing the thickness of the gap members 3a to 3g or the number of sandwiched members.

[0008]

[Problems to be solved by the device]

 7A and 7B, the support plates 21a to 21f can be easily fixed by tightening the nuts 16a and 16b of the fixing bracket 22 in a direction in which they approach each other. it can. However, when the gap members 3a to 3g are replaced or the number of the gap members is increased or decreased according to the dimensional error of the molded sheet 10 of FIG. 6, even if the nuts 16a and 16b of the fixing metal fitting 22 are loosened in the directions away from each other, the punching blade 12 Due to the existence of the above, it is not possible to easily widen the gap between the support plates 21a to 21f. Therefore, the gap between the support plates 21a to 21f must be opened by using a screwdriver or the like, and when the dimensional error of the molded sheet 10 frequently changes, the gap members 3a to 3g can be replaced or the number of the gap members can be increased or decreased. The work to be done becomes very complicated.

The present invention solves such a conventional problem, and an object of the present invention is to easily replace the gap members or increase or decrease the number of the gap members even if a dimensional error of the formed sheet occurs. It is to provide a molded sheet punching die capable of.

[0010]

[Means for Solving the Problems]

 A molded sheet punching die according to the present invention comprises a substrate composed of a plurality of supporting plates, a punching blade provided at a predetermined interval on the substrate, and a clearance between the supporting plates to adjust the punching blades. A gap member that changes the distance, a right-handed screw and a left-handed screw at both ends and a hexagonal portion at the center, and a pair of thrust plates screwed into the right-handed screw and the left-handed screw. And a thrust member having a pair of thrust plates, the pair of thrust plates being housed in a thrust plate housing hole provided in each of the two adjacent support plates, and the hexagonal part being provided in either of the two support plates. And the screw bolts are housed in a groove provided across the thrust plate housing hole and the hexagonal housing hole, and are rotated to one side of the hexagonal part. By moving the pair of thrust plates toward each other, the two adjacent support plates can be fixed to each other with the gap member interposed therebetween, and the pair of thrust plates can be rotated to the other side of the pair of thrust plates to move the pair of thrust plates to each other. The thrust plate is moved away from each other to widen the gap between the two adjacent support plates to take out the gap member.

[0011]

[Action]

 In the molded sheet punching die having the above structure, punching blades are provided at predetermined intervals on a substrate composed of a plurality of supporting plates, and a gap member for adjusting the gap between the supporting plates is provided between the supporting plates. ing. The support plates are fixed to each other by the thrust member. The thrust member has both right and left threaded screws on both ends and a hexagonal hexagonal section at the center. Thrust plates are screwed onto the right and left threads, respectively. Each thrust plate is housed in a thrust plate housing hole provided in each of two adjacent support plates. With this configuration, when the hexagonal portion is rotated, the thrust plates move in the direction toward each other or in the direction away from each other, so that only two adjacent support plates are fixed to each other by the thrust plate with the gap member in between. Moreover, it becomes easy to widen the gap between these support plates.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a plan view of the front side of a molded sheet punching die according to an embodiment of the present invention.

The molded sheet punching die of this embodiment is for cutting the molded sheet 10 of FIG. 6 into individual trays 11, 11, .... This molding sheet punching die has a substrate 1, and the substrate 1 is composed of six support plates 1a to 1f. Gap members 3a to 3g are sandwiched between the support plates 1a to 1f, and the support plates 1a to 1f are fixed to each other by thrust fittings 2, 2 ... Which function as thrust members. The punching blade 12 is formed in a large number of rectangular shapes with rounded corners on the substrate 1 composed of the support plates 1a to 1f fixed in this way.

FIG. 2A is an enlarged perspective view of the molding sheet punching die of this embodiment. Further, FIG. 2B shows an enlarged plan view of the back surface thereof. 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 back surface side. The molded 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. FIG. 4 shows the thrust fitting 2 in detail. The thrust fitting 2 is composed of both screw bolts 4 having a hexagonal portion 5 and thrust plates 6a, 6b screwed into the screw portions 4a, 4b at both ends of the screw bolts 4, respectively. A right-handed screw and a left-handed screw are respectively screwed to the screw portions 4a and 4b, and the thrust plates 6a and 6b move toward each other or away from each other depending on the rotation direction of the screw bolts 4.

As shown in FIGS. 2A and 2B, the thrust metal fitting 2 is housed in three elongated holes 7 a, 7 b, 7 c and a groove 7 d formed in the substrate 1. The long holes 7a and 7c are thrust plate storage holes, and the long holes 7b are hexagonal portion storage holes. Of these elongated holes, the elongated holes 7a and 7b are provided in the support plate 1a, and the elongated hole 7c is provided in the support plate 1b, and the holes are formed so as to penetrate from the front surface to the back surface of the support plates 1a and 1b, respectively. Has been done. A groove 7d is provided on the back surface of the support plates 1a, 1b so as to intersect these three parallel elongated holes 7a, 7b, 7c. The groove 7d is formed across the support plates 1a and 1b and does not reach the surface 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 the screw bolts 4 are located in the groove 7d. To be done. By rotating the hexagonal portion 5 of the thrust metal fitting 2 housed in this way to one side, the thrust plates 6a and 6b move in a direction in which they approach each other. As a result, the support plate 1a and the support plate 1b are fixed to each other with the gap member 3a interposed therebetween. Further, by rotating the hexagonal portion 5 of the thrust metal fitting 2 in the opposite direction, the thrust plates 6a and 6b move in the directions away from each other. As a result, 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, and the support plate 1b in FIG. 2 (a) 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 recesses 8, 8 ... Are provided on the upper long side thereof.

The gap member 3a is attached from the back surface of the support plates 1a and 1b. The recesses 8, 8 ... Are provided at positions corresponding to the thrust metal fittings 2 that intersect with each other, and are provided in the same number as the number of thrust metal 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 members 3a or increase or decrease the number of the gap members 3a, it is sufficient to rotate the hexagonal portion 5 of the thrust metal fitting 2 using a spanner or the like to move the thrust plates 6a and 6b in the directions away from each other. . This widens the gap between the support plates. At this time, since the thrust plates 6a and 6b are screwed into the screw portions 4a and 4b of the screw bolts 4, even if the punching blade 12 is present, the gap between the support plates can be widened against this. Next, the gap members are replaced or the number of sheets 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. As a result, the support plates 1a and 1b are fixed to each other.

Note that, in the above, for simplicity, only the portion extending over the support plates 1a and 1b has been described, but the same applies to other portions. Further, although the case where the elongated holes 7a, 7b, 7c penetrate to the back surface has been described in the present embodiment, it may be a groove shape that does not penetrate to the back surface.

[0020]

[Effect of device]

 In the molded sheet punching die of the present invention, it is easy not only to fix each support plate but also to widen the gap between each support plate by moving the thrust plate due to the rotation of the hexagonal part of the thrust member. Alternatively, the number of sheets can be easily increased or decreased. Therefore, the distance between the punching blades on the substrate can be easily changed according to the dimensional error of the formed sheet.

[Brief description of 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.

2A is a partially enlarged perspective view of the punching die of FIG.
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.

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.

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. 7A.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Substrate 1a-1f ... Support plate 2 ... Thrust metal fittings (thrust member) 3a-3g ... Gap member 4 ... Both screw bolts 5 ... Hexagonal part 6a, 6b ... Thrust plate 7a, 7c ... Long hole (thrust plate accommodation hole) 7b … Slots (hexagonal storage holes) 7d… Grooves 10… Molded sheets 11… Trays 12… Punching blades

Claims (1)

[Scope of utility model registration request] 1. A substrate composed of a plurality of support plates,
A punching blade provided at a predetermined interval on the substrate, a gap member that adjusts a gap between the support plates to change the gap between the punching blades, and a right screw and a left screw are respectively screwed to both ends. A thrust member having both screw bolts provided with a hexagonal portion in the center and a pair of thrust plates screwed into each of the right screw and the left screw, the pair of thrust plates being adjacent to each other of the two support plates. Respectively, the hexagonal parts are accommodated in the hexagonal part accommodating holes provided in either of the two support plates, and the screw bolts are the thrust plate accommodating holes and the thrust plate accommodating holes. It is accommodated in a groove provided across the hexagonal portion accommodation hole, and by rotating the hexagonal portion to one side, the pair of thrust plates are moved toward each other and the adjacent two
The two support plates can be fixed to each other with the gap member sandwiched therebetween, and the pair of thrust plates are moved away from each other by the rotation of the hexagonal portion to the other side so that the gap between the two adjacent support plates is increased. A molded sheet punching die, which is configured so that the gap member can be taken out by unfolding.