JP2010137330A - Punching blade die for molded sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately and quickly determine the installing position of a punching blade die for a resin molded sheet. <P>SOLUTION: The punching blade die device for the molded sheet includes the punching blade die 7 disposed on a base plate 1 and freely oscillatable in the horizontal direction through a pivot shaft 11, a guide member 16 disposed on the base plate 1 and freely oscillatable in the vertical direction through a biasing member 20, and a pressing plate 30 having an insertion hole 33 for the guide member 16 disposed on the base plate 1. A resin molded article is punched out by pressing the pressing plate 30 to the punching blade die 7 from above. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin molded product punching apparatus in which a food tray, a product storage package or the like is molded by vacuum molding or pneumatic molding, and more specifically, a cutting blade having a plurality of molded bodies formed on a resin molded sheet mounted on a substrate. The present invention relates to a punching die device configured to be punched accurately and in one process by a die.

  Conventionally, resin molded products such as food trays and product storage packages are formed by punching a resin molded body formed by vacuum molding or pneumatic molding on a resin raw sheet into a desired size and shape by a punching device in a separate process. I use it.

  In the case of punching the package molded body to a desired size by a punching device, it is necessary to punch after making the arrangement position dimension of each molded body molded on the raw fabric sheet and the installation positional relationship of the punching blade mold exactly coincide. The reason for this is that, for example, if there is a deviation or deformation of the punching position in the width dimension of the molded product collar that is a food tray, the molded product is accurately set in the installation frame when setting it in a dedicated food stuffing machine. The dedicated machine line stops abnormally, and even in the process of closing the molded body and adhering and sealing the periphery of the heel part, a uniform adhesion area cannot be secured, thereby causing internal food leakage or internal leakage due to poor airtightness. This is because it can cause many problems such as causing food to rot.

  For this reason, conventionally, when installing the blade type block body embedded with the blade as the above-mentioned countermeasure on the base, in order to accurately match the arrangement and positional relationship of the individual molded bodies formed on the resin molded sheet, the blade The horizontal installation position of the mold block main body is determined with repeated fine adjustments, and then the process proceeds to the punching process.

  For example, in Japanese Patent Laid-Open No. 10-113897 (Patent Document 1), a replacement block and a positioning block are provided on a base plate on which the extracted blade type block main body is mounted, and this is fixed by a fixing bolt. After confirming the installation position by repeatedly making temporary fixing adjustments, the bolts are tightened and fixed.

  Further, in Japanese Patent No. 3613481 (Patent Document 2), the bolt mounting hole of the punching unit in which the punching blade is embedded is formed larger than the diameter of the bolt projecting on the mounting plate on the mounting side, and the mounting position of the punching unit is set. Further, in Japanese Patent Application Laid-Open No. 2004-330388 (Patent Document 3), the bolt insertion hole of the block body in which the extraction blade is embedded is set to be larger in diameter than the bolt shaft diameter, and this is used as a support plate. It is configured to fix the installation position while repeating temporary tightening and position adjustment at the time of mounting.

JP-A-10-113897 (FIG. 1) Japanese Patent No. 3613481 (FIG. 2) Japanese Patent Laying-Open No. 2004-330388 (FIG. 3)

  In any of the above-described extraction blade type devices, the fixing bolts are temporarily tightened in advance as a means for accurately matching the arrangement dimensions of the respective molded bodies of the resin molded sheet and the installation position of the extraction blade block body. Since it is a structure that repeatedly finely adjusts the installation position in the direction and tightens and fixes after confirmation, the work to determine the positional relationship between the array dimensions of each molded body of the molded sheet and the extraction blade block body is troublesome There is a problem.

  In addition, since the insertion hole is formed so as to be finely adjustable with respect to the diameter of the fixing bolt of the extraction blade block body, the tightening gradually loosens during repeated punching operations, and the installation position of the extraction blade die There are many problems with its structure and workability, such as a large amount of defects in the punched molded body due to lateral displacement and the need for special tools for installation and replacement work of the punched-blade block body. Is the actual situation.

  Therefore, the present invention is a fine adjustment at the time of setup for matching the positional relationship between the installation position of the extraction blade mold and the respective molded bodies formed on the resin molded sheet, which has been implemented in the above-mentioned prior art when setting the extraction blade mold. A resin-molded sheet blanking die device that can immediately determine the installation position of the blanking die simply by covering the molded part of the resin molded sheet with the guide member on the blanking die. The purpose is to do.

  In order to achieve the above-mentioned object, the present invention is based on the present invention, in which the punching die 7 is swingable in the horizontal direction via the pivot 11 on the substrate 1 and swings in the vertical direction via the biasing member 20 on the punching die. A flexible guide member 16 is provided, and a pressing plate 30 having an insertion hole 33 for the guide member is disposed on the substrate, and the resin molded body 32 is punched by pressing the extraction blade die from above. (Claim 1).

  Further, a stepped recess hole 14 is provided in the seating surface 13 of the substrate, and a loose fitting plate 15 is disposed in the stepped recess hole. The loose fitting plate and the guide member are formed by the extraction blade type. It is good to comprise so that it may oscillate integrally with the pivot 11 on both sides of (Claim 2).

  Further, the guide member may be configured to be urged swayably in the vertical direction by an urging member 20 provided on the extraction blade die 7 (Claim 3).

  In addition, a plurality of the cutting blade dies can be arranged on the substrate 1 at intervals, and a seat plate 3 can be detachably fixed to a seating surface 13 of the substrate.

  According to the present invention, the cutting blade die 7 that can move horizontally on the substrate 1 via the pivot 11 and the guide member 16 that can move vertically on the cutting blade die via the biasing member 20. Therefore, the installation position of the punching die 7 can be accurately and immediately determined by a one-touch operation in which the molded body 32 of the resin molded sheet 31 is simply covered on the guide member 16. The guide member 16 is urged upward by the urging member, and the molded body 32 is detached so as to jump up from the guide member. Therefore, the molded body punched by hand operation is pulled out from the guide member. This eliminates the need for a continuous and quick punching operation, thus improving workability.

  Further, a stepped recess hole 14 is provided in the seating surface 3 of the substrate 1, and a loose fitting plate 15 is provided in the stepped recess hole. The loose fitting plate and the guide member are formed of the extraction blade type. Since the pivot 11 is configured to swing integrally with the pivot 11, the amount of swing with respect to the horizontal direction of the extraction blade die is also limited to a desired dimension, and the loose fitting plate 15, the extraction blade die 7, the guide member Since each of 16 swings integrally, the finished size of the punched molded body 32 is also accurate (Claim 2).

  Further, since the guide member 16 is configured to be urged swayably with respect to the vertical direction by the urging member 20 provided on the extraction blade die 7, the guide member is not greatly displaced in the lateral direction. In addition, the molded body that has been punched out to urge the guide member evenly upward is also good (Claim 3).

  In addition, a plurality of the extraction blade molds are arranged on the substrate 1 at intervals, and the seat plate 3 is detachably fixed to the seating surface 13 of the substrate, so that a step for arranging the loose fitting plate is provided. Maintenance such as processing of the recessed hole 14 and replacement due to wear of the stepped recessed hole can be performed easily and inexpensively.

  On the substrate 1, there is provided a cutting blade mold 7 that can be moved in a horizontal direction through a pivot 11 and a guide member 16 that can be moved in a vertical direction through a biasing member 20 on the cutting blade mold. Since the pressing plate 30 having the insertion hole 33 of the guide member is disposed on the substrate and the resin molded body 32 is punched out by pressing the extraction blade die from above, the installation of the extraction blade die can be performed with one touch. It can be punched accurately and quickly by operation.

FIG. 1 shows an overall view of a punching blade type apparatus of the present invention, and a plurality of recessed holes 2 corresponding to the number of arrangements of molded bodies 32 of resin molded sheets 31 to be described later are formed in a substantially square substrate 1 in plan view. Adjacent and placed.

  2, a seat plate 3 is detachably fixed by screws 4 to form a bottom wall 5 of the recessed hole as shown in FIG. Is deferred.

  The punching blade mold 7 is composed of a punching blade base 8 and a punching blade 9 fitted so as to surround the base, and a pivot 11 is inserted into a through-hole 10 drilled in a substantially central portion thereof. And the tip of the screw protrudes upward.

  On the other hand, a substantially circular stepped recess hole 14 is provided in the seating surface 13 of the seat plate 3 below the substrate 1, and a stepped disk-like loosely-fitted plate 15 having a slightly smaller diameter than the recess hole is disposed here, It is pivotally supported integrally with the extraction blade base 8 via the pivot 11 in a state where the tightening is held to such an extent that it can be swung horizontally.

  Further, as shown in FIG. 3, the loose-fitting plate 15 has a stepped convex portion 15a on one side, and the outer diameter of the large diameter portion 15b and the small diameter portion 15c is the large diameter hole 14a of the stepped concave hole 14 and The diameter of the stepped convex portion is set slightly higher than the height of the stepped portion 14b (small diameter portion) of the stepped recess hole and is loosely fitted. Thus, the punching die 7 can be finely moved in the vertical direction by the clearance generated by the difference between the height of the stepped protrusion and the height of the stepped recess hole, and is also loosely fitted in the horizontal direction. Horizontal swing is possible by the difference in diameter between the diameter of the plate 15 and the stepped recess hole 14.

  On the other hand, a guide member 16 formed corresponding to the molded object to be punched is pivotally supported above the pivot 11 so as to be slidable in the vertical direction through a through hole 17 drilled in a substantially central portion thereof. At the same time, its upper end is screwed and locked by a locking nut 18.

  At the same time, the guide member is set so as to be constantly urged uniformly upward by a plurality of urging members 20 embedded in the lower extraction blade base 8, and the tip of the urging member is the lower surface of the guide member. The extraction blade mold 7 and the guide member 16 are integrally swung in the recess 22 of the abutting plate 21 fixed to the sliding plate, and slide up and down between the screwing and locking positions of the locking nut 18. It is supposed to be.

  In other words, the guide member 16 is slidable in the vertical direction in the figure on the pivot 11 in response to pressing and releasing from the upper side by the pressing plate 30 in a resin molding sheet punching process described later.

  On the other hand, the urging member 20 has a structure in which a piston pin 26 inserted in the outer cylinder 25 is slidable in the axial direction by the urging of a spring 27 as shown in FIG. A plurality (preferably four places) are arranged in the vicinity of the peripheral edge of the extraction blade base 8, and the guide member 16 is urged upward with an equal force.

  The urging member 20 is not limited to the piston-shaped member described above, and may be, for example, a coil spring or a bamboo spring (not shown). The structure is not particularly limited as long as the structure is equally biased.

  Further, in the present embodiment, the seat plate 3 provided at the bottom of the substrate 1 is a separate member for facilitating the processing of the stepped recess hole 14 and the substrate recess hole 2. Needless to say, the contact plate 21 fixed to the lower surface of the guide member 16 can be renewed as a separate member to prevent wear caused by repeated contact with the biasing member 20. Therefore, this is not the case when the guide member itself is formed of a material with high wear resistance.

  On the other hand, reference numeral 30 denotes a pressing plate (FIG. 1), which is used for punching the molded body 32 by pressing the resin molded sheet 31 mounted on the punching die 7 and mounted on the punching device 7 (not shown) from above. Accordingly, the plurality of insertion holes 33 provided corresponding to the number of the extraction blade molds of the substrate 1 have dimensions that allow the guide member 16 on the extraction blade mold 7 and the molded body 32 covered by the guide member 16 to be enclosed and inserted. The abutting surface 34 of the lower surface abuts on and presses against the punching blade 9 so that the molded body 32 on the resin molded sheet 31 is punched out.

  Reference numeral 35 denotes a synthetic resin contact plate which is detachably provided on the pressing plate 30 and is configured so that the corresponding contact surface can be partially updated when it is worn with repeated pressing operations on the extraction blade mold. Thus, the cost of the mold can be reduced, and it is only necessary to selectively perform the integral molding or the other pair according to the size and the number of the molded body in production.

  Next, the operation of the present invention will be described. First, the substrate 1 is placed on a table of a punching machine (not shown), and the guide member 16 on the punching die 7 placed on the substrate is covered with a resin molded sheet 31 separately formed by vacuum forming or pneumatic forming. Put.

  At this time, when the molded body 32 formed on the molded sheet is fitted so that the guide member 16 serves as a guide and covers the respective guide members, the guide member is integrally pivotally supported by the pivot 11. The blade mold 7 also swings and moves in the horizontal direction corresponding to the array dimensions of the compacts, and the installation position thereof is accurately determined according to the array dimensions of the compacts.

  Next, when the pressing plate 30 attached to the pressing device descends and presses the surface of the extraction blade 9, the guide member 16 slides along the pivot 11 and descends. Then, the urging member 20 that urges the guide member from below is simultaneously pressed downward, and the piston pin 26 also hangs against the tension of the internal spring 27.

  And when the said press plate and the extraction blade 9 press moderately and the molded object 32 is punched out from the resin molding sheet | seat, the press plate 30 raises and the press to the extraction blade is cancelled | released simultaneously. The guide member 16 jumps up vigorously by the urging. At the same time, the punched molded body 32 jumps up by this reaction and separates from the guide member.

  At this time, since the sliding range of the guide member 16 is limited by the locking nut 18 screwed on the upper side of the pivot 11, the guide member 16 is not detached from the pivot 11, and a suitable punching operation can be performed by repeating this operation thereafter. Can do.

  As described above, according to the present invention, the mounting position of the molded body 32 of the resin molded sheet is determined by the guide member 16 and the installation position of the punching die 7 is accurately and immediately determined. Since it is easy to take out, workability is improved more than before. Furthermore, conventionally, setup work such as temporary fixing and trial driving for determining the installation position of the extraction blade type is not required, and its action and effect are enormous.

  The substrate 1 and the pressing plate 30 described in the present embodiment are preferably formed of wooden plywood in consideration of workability and cost, but may be manufactured of a molding resin and are within the scope of the present invention. It goes without saying that various modifications are possible.

It is a whole perspective view of the present invention extraction blade type device. It is a cross section of an extraction blade type | mold apparatus. It is an enlarged view of a loose-fitting board mounting part. It is an expanded view of the extraction blade type | mold apparatus. It is sectional drawing of a biasing member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Board | substrate 2 Recessed hole 3 Seat plate 4 Butterfly screw 5 Bottom wall 6 Cavity 7 Extraction blade type 8 Extraction blade base 9 Extraction blade 10 Through-hole 11 Axis 12 Butterfly screw 13 Seat (Seat plate)
14 Stepped recess 15 Floating plate 16 Guide member 17 Through hole 18 Locking nut
DESCRIPTION OF SYMBOLS 20 Energizing member 21 Contact plate 22 Depression 25 Outer cylinder 26 Piston pin 27 Spring 30 Press plate 31 Resin molding sheet 32 Molding body 33 Insertion hole 34 Contact surface 35 Contact plate

Claims (4)

On the substrate, there is provided a cutting blade type that can be moved in a horizontal direction via a pivot, and a guide member that can be moved in a vertical direction through a biasing member on the cutting blade mold. A molded blade punching die comprising a pressing plate having an insertion hole for a guide member and configured to punch out a resin molding by pressing the punching die from above. A stepped recess hole is provided in the seating surface of the substrate, a loose fitting plate is provided in the stepped recess hole, and the loose fitting plate and the guide member are pivoted with the extraction blade mold interposed therebetween. 2. The punching die for a molded sheet according to claim 1, wherein the die is configured to swing integrally. 2. The punching die for a molded sheet according to claim 1, wherein the guide member is urged slidably in a vertical direction by an urging member provided on the punching die. 2. The punching die for a molded sheet according to claim 1, wherein a plurality of said punching blade dies are arranged on the substrate at intervals, and a seat plate is detachably fixed to the seating surface of the substrate. .

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