JP2007021605A - Auxiliary punching instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stick an auxiliary punching instrument to a portion formed at an acute angle with an intersecting rule pressing blade without cutting by use of an instrument such as scissors, and to facilitate sticking work of an auxiliary piece (the auxiliary instrument). <P>SOLUTION: The auxiliary punching instrument 1 for repelling a sheet, which is disposed along a cutting blade 52 in a sheet punch die, is formed of material of a suitable width and a required thickness having cushioning performance, and shaped trapezoidal in a plan view by making both end parts 3, 3 in the longitudinal direction at an acute angle. Thus, the auxiliary instrument 2 can be simply stuck without an obstacle even in a portion arranged in a corner part Q on a board surface formed by disposing the cutting blade 52 and a rule pressing blade 53 intersecting at an acute angle and an inclined shape part of the cutting blade 52. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is used in the vicinity of a punching blade of a punching die for obtaining a product such as a paper container from a corrugated cardboard sheet or paperboard, and used to press the vicinity of the punching blade and push the cut portion back from the blade portion. This relates to a punching aid.

  Conventionally, in the production process of paper containers and the like, punching a blank of a predetermined shape, such as a box, developed from a sheet material such as a cardboard sheet or paperboard, a punching die in which a cutting blade is implanted in a required shape, and this punching die The work sheet positioned on the face plate is pressed against the punching die and punched by a cutting blade, and the blank of the required shape is returned to its original position. In this state, the operation is carried out by a punching device that continuously moves to the next scrap processing step and removes punch scraps.

  The punching die 100 used in this punching device is, as illustrated in FIG. 5A, an auxiliary piece (made of a material having cushioning properties along both sides of a cutting blade (punching blade) 102 ( Auxiliary tool) 104 is attached to the surface of the mold substrate 101, and when the work sheet is punched, the portion adjacent to the cutting portion is pressed by the auxiliary piece 104, and the face plate is retracted after punching by the cutting blade 102. Then, the punched portion is pushed back and released from the cutting blade 102. As shown in FIG. 5 (b), the auxiliary piece 104 is attached on both sides of the blade along the cutting blade 102 implanted in the punching die 100 so that the end surfaces 105 are slightly higher than the blade edge. Is done. The auxiliary piece 104 is a plate having a rectangular shape in the longitudinal direction with a cross section of about 8 mm square and a length of less than 100 mm (not limited to this) along the cutting blade 102 implanted in the mold substrate 101. The surface is cut and pasted to the required length using scissors.

  The auxiliary piece 104 is usually formed of sponge rubber (foam rubber, foamed plastic, etc.) having suitable elasticity, and is provided so that its end surface is higher than the cutting edge of the cutting blade 102. The auxiliary piece 104 is compressed during the punching operation to press the workpiece sheet, and when the cutting operation is finished and the face plate moves backward, the processed sheet cut by the restoring force from the compression follows the backward movement of the face plate. It works to push back. Such an auxiliary part 104 for pushing back a sheet by a sponge rubber is known, for example, from Patent Document 1, Patent Document 2, and the like.

Japanese Utility Model Publication No. 2-27899 Japanese Patent No. 2943982 (page 6 FIG. 9 and FIG. 11)

  By the way, in order to stick the auxiliary part piece 104 to the plate surface along the straight part of the implanted blade, the auxiliary part piece 104 cut to a required length may be used. For example, as shown in FIG. 6, there is a place or cutting blade where the cutting blade 102 to be implanted is in contact with the ruled pressing blade 103 (which forms a crease line without having a cutting edge) at an adjacent position at an acute angle. There is a restriction at the place where the auxiliary piece 104 is disposed at a position where the cutting blades are in contact with each other at an acute angle or where the cutting blade is bent at an acute angle. In other words, in order to attach the auxiliary piece 104 to the plate surface of the mold substrate 101 along the cutting blade 102, it is necessary that the auxiliary piece 104 is sharpened in accordance with the arrangement of the cutting blade 102. In order to form such an end with an acute angle, the auxiliary bar 104, which is generally used in a straight portion, is attached after the operator cuts it with a scissor each time according to the shape of the place to be used. Like to do.

  As shown in FIG. 6, when the cut part has a large number of inclined parts, the use of the auxiliary piece 104 a that is obliquely cut increases. Usually, the work of attaching the auxiliary piece 104 along the cutting blade 102 implanted in the mold substrate 101 is performed manually by the operator, and for this purpose, the end is cut obliquely (at an acute angle). If the usage amount of the auxiliary piece 104a formed in this way increases, the frequency of cutting and handling the normal auxiliary piece 104 correspondingly increases, and the cut edge of the cut sponge rubber increases. In addition, the sponge rubber forming the auxiliary piece 104 to be used uses a scissors as a tool for cutting it diagonally, but it is easy because the material is flexible and highly elastic. However, it is difficult to cut and requires time. Moreover, since it requires an operation of attaching to the plate surface with an adhesive, after cutting the material with a scissors, after applying the adhesive on one side, a little gap from the side of the blade along the cutting blade 102 The work of sticking to the plate surface is repeated. On the other hand, when using the one coated with the adhesive on one side of the auxiliary piece 104 in advance, it is cut obliquely with the scissors together with the adhesive coated surface, so that the adhesive layer interferes with the cutting. It's not easy. In other words, when the adhesive adheres to the blade of the scissors and the cutting operation is repeated, the sharpness of the blade is lowered, and cutting takes time regardless of simple operation. As a result, in the case where a large number of blanks such as a box are to be taken on one side of the punching die, if the cutting blade is planted in an inclined state, the operation is performed according to the product of the number of cutting blades arranged obliquely. This is repeated several times, and a lot of labor is required.

  On the other hand, in punching a box blank, a cutting blade 102 is punched into a required shape and a crease for forming a box is simultaneously performed. In order to make the crease (crease line formation), as is well known, a grooved tape 112 is attached to the face plate 110 so as to face the ruled press blade 103 implanted in the punching die, and this ruled press blade. A crease line is formed on the processed sheet 120 by 103 and the groove 113 of the grooved tape 112. In order to attach the grooved tape 112, as shown in FIG. 6 (b), in order to match the action line a of the ruled pressing blade 103 with the center line of the groove 113 of the grooved tape 112, a punching die is used. The grooved tape 113 provided with a mounting aid (not shown) is held by using the ruled pressing blade 103 to be implanted, and the punching die 100 and the face plate 110 are relatively approached in this state to press the ruled line. A method is adopted in which the grooved tape 112 held by the blade 103 is adhered to the plate surface of the face plate 110. By doing so, when performing die punching, the ruled lines are formed at predetermined positions on the work sheet 120 interposed by matching the groove 113 of the grooved tape 112 on the face plate 110 with the ruled pressing blade 103 of the punching die 100 opposed thereto. Is imprinted.

  By the way, the work of attaching the auxiliary part for pushing back along the above-mentioned cutting blade corresponds to the cutting blade arranged in the inclined portion, and the upper surface of the generally used punching die face plate There is a problem in the relationship between the grooved tape for forming the crease line (see FIG. 6B) and the mounting position of the auxiliary piece. This problem is that if the auxiliary piece is not properly attached when the grooved tape is attached to the ruled cutting blade that becomes the formation point of the crease line in the preparation stage of the punching operation, There arises a problem that the piece cannot be mounted on the ruled pressing blade due to interference when the grooved tape is mounted. In other words, the auxiliary piece is attached to a necessary place in a factory for producing a punching die as described above and shipped to a user (manufacturer such as a paper container), whereas a grooved tape is a paper container having a punching device. This is due to the difference in the respective mounting operations, such as sticking to the upper surface of the face plate disposed opposite to the punching die in the punching device. When such a problem occurs, in the preparatory process of the punching work, the auxiliary part piece stuck to the interference part was removed, and the end part of the removed auxiliary part part was cut so as not to interfere with the grooved tape. A rework work to re-stick to the corresponding location later is required. In this case, ignoring the interference and attaching the grooved tape to the ruled blade and applying it to the face plate, the auxiliary piece works as an irregular to the grooved tape attached to the face plate during the punching operation. A lateral load is applied, causing a positional shift at the bonded portion, so that an accurate crease line cannot be formed. Therefore, it is necessary to set the positional relationship between the auxiliary piece and the grooved tape correctly, and the correction as described above is performed, which consumes a lot of time for the preparation of the punching work and contributes to a decrease in efficiency. There is a problem to say.

  In addition, in the punching die manufacturing factory, the auxiliary piece is attached in anticipation of facilitating the mounting operation of the grooved tape on the punching die in the punching preparation process at the box making factory as described above. Therefore, a lot of experience and proficiency are required for the workers.

  The present invention has been made to solve such problems, and is applied to a place formed at an acute angle with a ruled blade that intersects with the cutting blade without cutting with a tool such as a scissors. An object of the present invention is to provide a punching assisting tool that can be worn and facilitates the attaching operation of the auxiliary piece.

In order to achieve the above object, the punching aid of the present invention comprises:
A punching assist tool for pushing back a sheet arranged along a cutting blade in a sheet punching die, which is made of a material having an appropriate width and a required thickness of cushioning, and has an acute angle at least at one end in the longitudinal direction. Thus, it is formed in a trapezoidal shape in plan view (first invention).

  In the above invention, the auxiliary tool is preferably formed in a trapezoidal shape in plan view with one end portion having an acute angle and the other end being substantially perpendicular (second invention).

The punching assisting tool of the third invention is
A plurality of trapezoidal pieces in a plan view made of a cushioning material having an adhesive layer formed on the back surface with a required size on a mount having a release surface so that it can be separated from each other and adjacent to multiple rows. It is characterized in that it is formed such that the pieces can be sequentially removed from the mount and attached to the mold substrate surface along the cutting blade of the punching die.

  According to the first invention, for example, when both end portions in the longitudinal direction of the member are formed at an acute angle, the cutting blade implanted in the punching die to be used is along the portion corresponding to the inclined side of the blank to be punched and formed. When attaching to the left and right, even if it is an inclined part with different right and left sides, the direction of the auxiliary device is changed so that the direction of the auxiliary device is opposite to the left or right direction. If worn, it can be used without taking the trouble of cutting the end of this member. In addition, in the case of a crease pushing blade, a space for mounting grooved tape on the crease pushing blade is secured against the corner formed by the cutting blade adjacent to the crease pushing blade or a portion that intersects the cutting blade at an acute angle. Thus, it can be reasonably attached to the required range according to the blade length of the cutting blade. Therefore, as with conventional punching aids (auxiliary pieces), it is possible to save the trouble of cutting and sticking the members diagonally with a scissors according to the arrangement of the punching cutting blade, and use the material without waste There is an advantage that you can. In addition, the arrangement of the grooved tape with respect to the crease pressing blade can be easily accommodated, and there is an effect that it is possible to remarkably reduce the man-hours for manufacturing this type of punching die without causing a problem of skill.

  In addition, according to the second invention, if an auxiliary tool with different right and left sides is prepared, it can be attached to either the left or right direction with respect to the arrangement position of the right and left arbitrary cutting blades, There is an advantage that it can be used even in a place where it is difficult to use the auxiliary tool formed at the acute angle at both ends. In addition, it is effective for use corresponding to a small space such as a cut-out narrow part by a cutting blade.

  According to the third aspect of the invention, by using a plurality of punching auxiliary tools having required shapes and dimensions on the mount, the auxiliary tool can be assisted with one hand during the operation of attaching the auxiliary tools to the key points of the punching die. You can hold the board with the tool, remove the auxiliary tool from the board in order with the other hand, and stick it to the required position. Therefore, as in the prior art, it is not necessary to repeat the operation of holding the scissors by hand in order to cut the member diagonally and placing the scissors once at the time of sticking, and the workability is remarkably improved. As a result, the working efficiency is improved and the cost can be reduced.

  Next, specific embodiments of the punching assisting tool according to the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall perspective view (a) and an enlarged cross-sectional view (b) of a specific example of the punching assisting tool of the present embodiment, and FIG. 2 shows the punching assisting tool assembled and held on the mount. A perspective view of the block body is shown respectively.

  The punching assisting tool 1 of this embodiment has a main part 2 made of a cushioning material such as sponge rubber, is appropriately lengthened in a cross-sectional square shape, and both ends 3 and 3 in the longitudinal direction are acute angles. As a whole, it has a trapezoidal shape in plan view. The longitudinal side surfaces 4 and 4 of the main body 2 are formed into a corrugated shape at an appropriate pitch, and the overall dimensions are, for example, a height dimension of 8 mm, a width dimension of 8 mm, and a length dimension of 40 mm long side and short side It is about 24m. A pressure sensitive adhesive is applied to the bottom surface of the main body 2 to form an adhesive layer 6.

  For example, as shown in FIG. 2, the punching assisting tool 1 is formed into a block body 10 that is arranged in a separable manner so as to be in close contact with the surface of the mount 11 having a release layer before use. ing. The block body 10 is provided with a release layer by applying a pressure-sensitive adhesive to be an adhesive layer 6 to the back surface of a sheet material made of the cushioning material having a predetermined thickness to be the main body portion 2. 11 is attached in a zigzag manner, and in such a state, a plurality of strips are divided in a longitudinal direction with a width of a required dimension, and each longitudinally divided row is inclined at a required inclination angle, for example, 45 °. The individual auxiliary tools 1 (auxiliary pieces) are attached to each other without being separated from the mount 11 and are kept in a sheet form until they are cut into a shape and used. The block body 10 has a width dimension that is convenient for an operator to hold in one hand and to remove each auxiliary tool 1 with the other hand. In the figure, reference numeral 13 denotes a vertical line, and reference numeral 14 denotes a horizontal oblique cutting line, which is cut in a zigzag shape. The longitudinal line 13 is cut into a wave shape at an appropriate pitch. The cutting line 13 may be a straight line. In other words, the auxiliary tool 1 may have a flat shape on the side surfaces 4 and 4 of the main body 2.

  In use, the block body 10 of the punching assisting tool thus formed is one by one along the cutting blades 52 implanted in the mold substrate surface 51 of the manufactured punching die 50 as illustrated in FIG. It peels off from a base_sheet | mounting_paper and sticks through the adhesive layer 6 on the type | mold board | substrate surface 51 as it is. At this time, each punching assisting tool 1 (hereinafter simply referred to as the assisting tool 1) has the block body 10 with one hand and the assisting tools 1 one by one sequentially from the mount 11 of the block body 10 with the other hand. Since it peels and sticks to the mold substrate surface 51, workability | operativity is good and even if it is necessary to stick to many places, work can be completed rapidly.

  Further, when the punching assisting tool 1 of the present embodiment is stuck along the inclined cutting blade 52, there is a relationship between the cutting blade 52 and the ruled cutting blade 53 disposed in the vicinity. For example, in a place as shown in FIG. 3A, the cutting tool 52 obliquely arranged with respect to the ruled pressing blade 53 or the cutting blades 52 are arranged at an acute angle. The corner 3 formed by the cutting blade 52 and the cutting blades 52, 52 is formed at the corner 3 formed by the cutting blade 52 and the ruled-pressing blade 53 at the end 3 whose side is made a sharp angle with the side surface of the cutting blade 52. Adhere in the state of inserting in the part Q ′. In the corner portion Q, as shown in FIG. 4, a grooved tape 55 (a soft resin holding piece 55a that is temporarily supported by the cutting edge of the ruled blade) A pair of left and right groove forming tapes 55b and 55b for forming a groove, an adhesive layer 55c applied to the back surface of the groove forming tapes 55b and 55b, and a release tape 55d for protecting the adhesive layer 55c. ) Is prepared with a required dimension so as not to cause interference between the grooved tape 55 and the auxiliary tool 1 on the premise that the grooved tape 55 and the auxiliary tool 1 are used in preparation for mounting a punching die with a punching device (not shown). Even for such an operation, the end 3 of the auxiliary tool 1 is formed at an acute angle. In addition, regarding the sticking of the auxiliary tool 1 on the outer side of the cutting blade 52 in the corner portion Q (location corresponding to the corner portion Q ′) on the mold substrate surface 51, the auxiliary tool 1 has a trapezoidal shape in a plan view with acute angles at both ends. Since it is formed, if the direction is changed so that the direction of the auxiliary tool 1 arranged at the corner portion Q is opposite to that of the auxiliary tool 1, the object can be achieved by adhering along the cutting blade 52 as it is. .

  On the other hand, as shown in FIG. 3 (b), the auxiliary tool 1 is connected as it is, except where the cutting blade 52 is planted in a straight line or where the bent state is formed at an acute angle. And sticking along the cutting blade 52. Or what is necessary is just to stick the auxiliary tool 1 as it is on both sides of the cutting blade 52, as shown in Fig.3 (a).

  Further, as shown in FIG. 3C, for example, in a place where the cutting blade 52 is implanted in a shape corresponding to the narrow punched portion R of the blank, the one end portion 3 is acute and the other end 3 ′ is Using the auxiliary tool 1a having a trapezoidal shape in plan view, the sharp edge portion 3 is attached so as to face the ruled pressing blade 53 side. In this case, it is only necessary to prepare and use an auxiliary tool 1a that is not right and left. When such an auxiliary tool 1a is manufactured in a plurality of rows so that the auxiliary tool 1 having acute angles at both ends is arranged in the middle in the longitudinal direction when the block body 10 is formed, the acute angle is obtained at both ends in the longitudinal direction. The end part 3 can be obtained with the left and right sides different. By doing so, a material having cushioning properties can be used without waste, which is effective. In addition to the use location as illustrated in FIG. 3C, the auxiliary tool 1a has an arrangement state of the cutting blade 52 as shown by reference numeral S in FIG. It can also be arbitrarily used for partial use together with the auxiliary tool 1 having acute angles at both ends.

  As described above, the punching assisting tool 1 according to the present embodiment is formed in advance to have a required length with both end portions 3 and 3 at acute angles, so that the punching tool 1 is formed on the mold substrate surface 51 along the cutting blade 52 of the punching die. On the other hand, by sticking as described above according to the situation, it is possible to cope with punching preparation work (attachment of grooved tape) in the next process without difficulty. In addition, even with the punching aid 1a that has an acute angle at one end, it is possible to attach this kind of assisting tool without using a tool such as a scissors by sticking it on the part according to its shape. is there. Therefore, the conventional method, which required a lot of labor, can be created very easily, and the improvement of work efficiency can be promoted.

  In the above description, an auxiliary tool having a uniform size is prepared. However, when the auxiliary tool block 10 is prepared as described above, by preparing tools having different length dimensions. If the size is selected according to the state of arrangement of the cutting blades at the time of attaching to the mold substrate surface, the work can be performed more effectively.

  Further, according to the gist of the present invention, the punching assisting tool is not provided with an adhesive layer on the back surface of the main part, and is individually formed and applied by applying an adhesive to the back surface during use. It can also be done.

Overall perspective view (a) and enlarged cross-sectional view (b) of one specific example of the punching aid of the present embodiment Perspective view of block body of punching aid held together on mount A plan view (a) showing a specific example of the usage mode of the punching assisting tool, a diagram (b) showing the usage mode at the location where the cutting blades are arranged in a straight line, and an example of usage mode at other locations Figure representing (c) The figure which represents typically the relationship between the punching auxiliary tool in the corner part location of the template surface where a cutting blade and a ruled pressing blade cross | intersect, and the grooved tape for ruled line formation with which the ruled pressing blade was mounted | worn It is a figure showing the one aspect | mode which attached the punching auxiliary | assistant piece used for the conventional punching die to the template surface, The whole top view (a) and the expanded sectional view (b) of the principal part The figure (a) showing the attachment point of the conventional auxiliary | assistant piece by which the scissors were cut, and the explanatory drawing (b) showing the aspect of ruled line formation by a ruled pushing blade

Explanation of symbols

1,1a Punching aid (auxiliary tool)
2 Auxiliary tool body 3 End (Acute angle end)
3 'other end (almost perpendicular end)
6 Adhesive layer 10 Block body of punching aid 11 Mount 50 Punching die 51 Type substrate surface 52 Cutting blade 53 Ruled blade 55 Grooved tape

Claims (3)

  A punching assisting tool for pushing back a sheet arranged along a cutting blade in a sheet punching die, which is made of a material having a cushioning property with an appropriate width and a required thickness, and has an acute angle at least at one end in the longitudinal direction A punching aid characterized by being formed in a trapezoidal shape in plan view.   The punching assisting tool according to claim 1, wherein the assisting tool is formed in a trapezoidal shape in a plan view in which one end is an acute angle and the other end is substantially a right angle.   A plurality of trapezoidal pieces in a plan view made of a cushioning material having an adhesive layer formed on the back surface with a required size on a mount having a release surface so that it can be separated from each other and adjacent to multiple rows. The punching aid is characterized in that it is formed so that it can be attached to the mold substrate surface along the cutting blade of the punching die by sequentially removing the pieces from the mount.

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