JP2010284868A - Groove member for forming ruled line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an improved groove member for forming a ruled line capable of putting the ruled line where a corrugated cardboard can be exactly folded at a prescribed position. <P>SOLUTION: In the groove member for forming ruled line in which a recessed groove 2 is formed oppositely to a ruled line pressing member 23, the corrugated cardboard 51 pressed by the ruled line pressing member 23 is received by the recessed groove 2 in accordance with approach of the ruled line pressing member 23 and thereby, the ruled line 52 is put on the corrugated cardboard 51, at least one side face of the recessed groove 2 is made to be an inclined side face 2a which is inclined outward from the bottom part to an opening part. When the corrugated cardboard 51 is pushed into the recessed groove 2 by the ruled line pressing member 23, since the corrugated cardboard 51 is pushed into the bottom part of the recessed groove 2 while being slid along the inclined face 2a of the recessed groove 2, the ruled line 52 can be put deeply and clearly without causing cracking of the corrugated cardboard 51 and the corrugated cardboard 51 can be folded without being affected by step parts 53. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ruled line forming groove member for placing a bent ruled line on a corrugated board when pressed by a ruled member.

  When a corrugated cardboard is punched to form a ruled line and bent along the ruled line to form a box, the cardboard is not bent accurately along the ruled line, which may cause a defect. In particular, when corrugated cardboard is folded along a ruled line in the direction of the corrugation, which is the direction in which the corrugated core step between the corrugated cardboard liners extends, the positional relationship and angle between the corrugation and the folding position are constant. Without this, there is a high possibility that the folding position will deviate from the predetermined position.

  As a countermeasure, as shown in FIG. 9, in a processing machine such as a die cutter provided with an upper board 11 and a lower board 12, a mold provided with a long cutting edge 22 and a ruled member 23 on the upper board 11 via a chase 13. The body 21 is mounted, and a metal face plate 31 as a groove member having a long concave groove 32 is mounted on the lower board 12 via the dead plate 14, whereby the corrugated cardboard 51 is punched and creased. ing.

  In this case, when the corrugated cardboard 51 sandwiched between the mold body 21 and the face plate 31 is punched with the cutting blade 22 as the upper board 11 and the lower board 12 approach, as shown in FIG. The cardboard 51 is pressed into the concave groove 32 and pressed to form a long ruled line 52 in which the cardboard 51 is curved downward (see Patent Document 1 below). Here, the concave groove 32 is assumed to have vertical sides.

  Further, as shown in FIGS. 11 and 12, in addition to a long ruled member 23 for putting a ruled line for bending in the mold body 21, a short ruled member 24 intersecting this is held by a holder 25. It has also been proposed to perform a crease process by fixing and attaching a plastic groove member 33 having a long concave groove 34 to the dead plate 14 for each ruled line.

  In this case, the ruler member 23 is pressed against the corrugated cardboard 51 and the cardboard 51 is pushed into the concave groove 34 to form a long ruled line 52 curved downward in the cardboard 51, and a short line intersecting the ruled line 52 by the ruler member 24. A ruled line 52c is formed. Thereby, the stress at the time of bending concentrates on the ruled line 52, and the corrugated board 51 becomes easy to bend along the long ruled line 52 (refer patent document 2 below).

JP 2003-145492 A JP-A-9-70905

  However, if the ruled line 52 is inserted using the face plate 31 as a groove member in which both side surfaces of the concave groove 32 are vertical as described above, a ruled cracking phenomenon in which the cardboard is broken at the corner of the opening end of the concave groove 32 may occur. In addition, since it is necessary to suppress the depth of the ruled line 52, the desired effect may not be obtained.

  Further, when the groove member 33 is used, it takes time and effort to frequently replace the groove member 33 due to the deterioration of the groove member 33, and the groove member 33 is detached from the dead plate 14 during the punching operation and mixed into the product. Besides, there is a problem that the appearance of the cardboard 51 is deteriorated by the ruled line 52c inserted by the ruled member 24.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a ruled line for accurately folding a cardboard at a predetermined position by improving the ruled line forming groove member.

  In order to solve the above-described problems, in the present invention, a concave groove is formed facing the ruled member, and the cardboard pressed by the ruled member is received by the concave groove with the approach to the ruled member. In the groove member for forming a ruled line for putting a ruled line in the cardboard, at least one side surface of the concave groove is an inclined side surface inclined outward from the bottom part to the opening part.

  When the ruled line forming groove member according to the present invention is used, when the cardboard is pushed into the concave groove by the ruled member, the cardboard is pushed into the bottom of the concave groove while sliding along the inclined side surface of the concave groove. A ruled line can be drawn deeply and clearly without being generated, and the cardboard can be accurately bent at a predetermined position along the ruled line.

  Further, if both side surfaces of the concave groove are inclined side surfaces, the ruled line can be made symmetrical on both sides, and the cardboard can be accurately folded along the center line in the width direction of the ruled line.

  In addition, if only one side surface of the groove is an inclined side surface and the other side surface is a vertical side surface, when the cardboard is pushed into the groove with a ruled member, the cardboard will follow the inclined side surface with respect to the vertical side surface. It can be slipped and pushed into the concave groove, and the ruled line can be deeply and clearly inserted without cracking the cardboard. Can be bent accurately at the position.

Sectional drawing which shows the state which mounted | wore the processing machine with the face plate and ruled member as a ruled line formation groove | channel member concerning 1st Embodiment of this invention. Sectional drawing which shows the attachment state to the dead plate of a face plate same as the above Sectional drawing which shows the state which supplied the corrugated board between the face plate same as the above, and a ruled member Sectional drawing which shows the ruled state by a face plate and a ruled member same as the above Sectional drawing which shows the state which mounted | wore the processing machine with the face plate and ruled member as a ruled line formation groove | channel member concerning 2nd Embodiment of this invention. Sectional drawing which shows the attachment state to the dead plate of a face plate same as the above Sectional drawing which shows the state which supplied the corrugated board between the face plate same as the above, and a ruled member Sectional drawing which shows the ruled state by a face plate and a ruled member same as the above Sectional drawing which shows the state which mounted | wore the processing machine with the face plate and the crease member as the conventional groove member for ruled line formation Sectional drawing which shows the ruled state by a face plate and a ruled member same as the above Sectional drawing which shows the state which mounted | wore the other conventional ruled line formation groove member and the crease member to the processing machine Sectional drawing which shows the ruled state by a groove member and a ruled member same as the above

  A first embodiment of the present invention will be described below with reference to FIGS.

  A face plate 1 as a groove member shown in FIG. 1 is made of a metal such as stainless steel, and is attached to a lower plate 12 of a processing machine, which is a flat die cutter provided with an upper plate 11 and a lower plate 12, via a dead plate 14. Is done. In this processing machine, the lower board 12 moves up and down with respect to the upper board 11, or the upper board 11 moves up and down with respect to the lower board 12, or both the upper board 11 and the lower board 12 move up and down. 11 and the lower board 12 approach and separate relatively.

  A mold body 21 having cutting edges 22 and ruled members 23 each having a linear length is mounted on the upper board 11 via the chase 13.

  As shown in FIGS. 2 and 3, the face plate 1 is formed with long concave grooves 2 by cutting the upper surface facing the lower end of the ruled member 23, and both side surfaces of the concave grooves 2 are upward from the bottom at the bottom. It is set as the inclination side surface 2a which inclined outside toward the opening part. The width of the upper end side of the groove 2 on the opening side is larger than the width of the ruled member 23.

  When such a face plate 1 is mounted on the processing machine shown in FIG. 1, the mold body 21 and the face plate 1 are positioned so that the center line in the width direction of the groove 2 and the ruled line member 23 coincides.

  Now, in order to produce a blank for forming a box, in order to punch out the cardboard 51 and put a ruled line, the lower plate 12 is lowered with respect to the upper plate 11, and the face plate 1 and the mold body 21 are separated from each other. As shown in FIG. 3, the corrugated cardboard 51 is supplied between the face plate 1 and the ruled member 23 in a flat state along the upper surface of the face plate 1. Here, a case where a square rule with a flat tip is used as the ruled member 23 is illustrated.

  Next, when the lower board 12 is raised with respect to the upper board 11 from the state shown in FIGS. 1 and 3, the cardboard 51 is sandwiched between the face plate 1 and the mold body 21, and the cardboard 51 is hit by the cutting edge 22. It is pulled out and a blank outline of the box is formed. In this state, the lower end portion of the ruled line member 23 is positioned below the upper surface of the corrugated cardboard 51 that has been flat.

  At this time, as shown in FIG. 4, the corrugated cardboard 51 having rigidity is recessed until it contacts the bottom of the groove 2 while sliding along the inclined side surfaces 2 a on both sides of the groove 2 as the ruled member 23 is pressed. Since it is pushed into the groove 2, even if a long ruled line 52 is inserted deeply, the liner of the cardboard 51 is not excessively pulled and the cardboard 51 is not cracked.

  As a result, the ruled line 52 has symmetrical inclined portions 52 a formed on both sides with respect to the center line in the width direction, and the action of the bending force can be concentrated around the center line of the ruled line 52. The cardboard 51 can be accurately bent along the center line in the width direction of the ruled line 52 without being affected by the step 53 of the cardboard 51, and a highly accurate box can be manufactured.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  The face plate 1 as the groove member shown in FIG. 5 is also made of metal such as stainless steel, and is attached to the lower plate 12 of the processing machine, which is a flat die cutter provided with the upper plate 11 and the lower plate 12, via the dead plate 14. Installed. In this processing machine, the lower board 12 moves up and down with respect to the upper board 11, or the upper board 11 moves up and down with respect to the lower board 12, or both the upper board 11 and the lower board 12 move up and down. 11 and the lower board 12 approach and separate relatively.

  A mold body 21 having cutting edges 22 and ruled members 23 each having a linear length is mounted on the upper board 11 via the chase 13.

  As shown in FIGS. 6 and 7, the face plate 1 is formed with a long groove 2 by cutting the upper surface facing the lower end of the ruled member 23, and one side surface of the groove 2 extends from the bottom at the bottom. An inclined side surface 2 a that is inclined outward toward the upper opening is formed, and the other side surface is a vertical side surface 2 b that is substantially vertical downward from the upper surface of the face plate 1. The width of the upper end side of the groove 2 on the opening side is larger than the width of the ruled member 23.

  When such a face plate 1 is mounted on the processing machine shown in FIG. 5, the mold body 21 and the face plate 1 are placed so that the center line in the width direction of the ruled member 23 is located in the middle portion of the groove 2. Position.

  Now, in order to produce a blank for forming a box, in order to punch out the cardboard 51 and put a ruled line, the lower plate 12 is lowered with respect to the upper plate 11, and the face plate 1 and the mold body 21 are separated from each other. 7, the cardboard 51 is supplied between the face plate 1 and the ruled member 23 in a flat state along the upper surface of the face plate 1. Here, a case where a square rule with a flat tip is used as the ruled member 23 is illustrated.

  Next, when the lower board 12 is raised with respect to the upper board 11 from the state shown in FIGS. 5 and 7, the cardboard 51 is sandwiched between the face plate 1 and the mold body 21, and the cardboard 51 is hit by the cutting edge 22. It is pulled out and a blank outline of the box is formed. In this state, the lower end portion of the ruled line member 23 is positioned below the upper surface of the corrugated cardboard 51 that has been flat.

  At this time, as shown in FIG. 8, the corrugated cardboard 51 having rigidity slides along the inclined side surface 2a with reference to the vertical side surface 2b of the concave groove 2 as the ruled member 23 is pressed, Since it is pushed into the groove 2 until it touches the bottom, even if a long ruled line 52 is inserted deeply, the liner of the cardboard 51 is not pulled excessively and the cardboard 51 is not cracked.

  As a result, the ruled line 52 has a vertical portion 52b corresponding to the vertical side surface 2b of the groove 2 on one side and an inclined portion 52a corresponding to the inclined side surface 2a of the groove 2 on the other side. Thus, the corrugated cardboard 51 is easily bent around the lower part of the vertical part 52b that is bent more strongly than the inclined part 52a.

  For this reason, even when the ruled line 52 is placed in a direction parallel to the step 53 of the cardboard 51, the cardboard 51 is not affected by the step 53 of the cardboard 51, and the cardboard 51 is moved along the vertical portion 52b of the ruled line 52. It can be bent accurately, and a highly accurate box can be manufactured.

  Moreover, when the groove member for ruled line formation of each said embodiment is used, the workability of mounting | wearing with a processing machine is improved by directly forming the concave groove 2 corresponding to the several ruled line 52 in the surface plate 1 of 1 sheet. In addition, the positional accuracy of the groove 2 with respect to the ruled member 23 can be improved, and the occurrence of defects due to peeling from the dead plate 14 can also be prevented.

  Furthermore, by using a metal plate having a high hardness as the material of the face plate 1 and improving the durability, it is possible to save labor for replacement.

  In each of the above embodiments, the face plate as a groove member when the processing machine is a flat die cutter is illustrated, but both sides of the concave groove 2 are also used in the face plate as a curved groove member used for a rotary die cutter. By inclining the surface or one side surface, it is possible to perform the same ruled processing.

DESCRIPTION OF SYMBOLS 1 Face plate 2 Groove | groove 2a Inclined side surface 2b Vertical side surface 11 Upper board 12 Lower board 13 Chase 14 Dead plate 21 Mold body 22 Cutting edge 23 Ruled member 51 Corrugated cardboard 52 Ruled line 52a Inclined part 52b Vertical part 53 Stage

Claims (3)

  A groove for forming a ruled line that forms a concave groove facing the ruled member, receives the corrugated cardboard pressed by the ruled member with the concave groove as it approaches the ruled member, and puts a ruled line on the cardboard. A ruled line forming groove member characterized in that at least one side surface of the concave groove is an inclined side surface inclined outward from the bottom to the opening.   2. The ruled line forming groove member according to claim 1, wherein both side surfaces of the concave groove are inclined side surfaces that are inclined outward from a bottom portion to an opening portion.   2. The ruled line forming groove member according to claim 1, wherein only one side surface of the concave groove is an inclined side surface and the other side surface is a vertical side surface.

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