JP2902065B2 - Stamping method of corrugated cardboard sheet - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method of punching a cardboard sheet using a processing machine.

(Prior Art) Usually, as shown in FIG. 4, a plurality of slots (a) and ruled lines (b) are provided at the front and rear portions as shown in FIG.
And, as shown in FIG. 5,
It is known that a slot having a plurality of slots (a) at the front and a cutout (c) formed at the rear through a parallel ruled line (b) is punched out from the ruled line. Thereby, it is formed so as to be assembled into a cardboard case having a predetermined shape and size.

The former cardboard sheet is manufactured by a slotter having a plurality of sets of grooving heads and ruled line heads, and the latter cardboard sheet is a sheet punch having a slot forming blade or a notch forming blade on a die roll paired with an anvil roll. It is manufactured by removably mounting a punching table. When punching a punching hole (d) such as a hole for a handle in a corrugated cardboard sheet, the former is used for punching a punching hole between holders of a grooving head. An attachment is attached. In the latter, after removing the forming table from the die roll, an attachment for punching a punch hole is attached to a predetermined portion of the die roll.

(Problems to be Solved by the Invention) As described above, in the former case, it is possible to mount the punching hole between the holders of the grooving head and to perform the perforation, but in the latter case, Since it is not possible to attach a punching hole drilling attachment to the forming table, the punching hole (d) is provided by removing the forming table from the die roll once and then mounting the punching hole drilling attachment at a desired location on the die roll. Must be manually attached, and after drilling the punched hole (d) in the cardboard sheet, it is necessary to manually remove the punched hole drilling attachment again.

This operation requires a considerable amount of time and labor since the attachment must be manually set at the correct position on the die roll, and has a problem that the operation is difficult and the production efficiency of the cardboard sheet is reduced.

The present invention has been made in view of such problems,
The purpose is to punch out a corrugated cardboard sheet into a fixed shape by a single processing machine without removing a punching hole forming material from a die roll, and then to punch out the corrugated cardboard sheet. The present invention provides a method for punching a corrugated cardboard sheet in which punching holes such as grip holes are formed in predetermined portions.

[Means for solving the problem]

In order to achieve the above object, a method for punching a corrugated cardboard sheet according to the present invention comprises the steps of: supplying a corrugated cardboard sheet between an anvil roll and a die roll; punching the corrugated cardboard sheet into a predetermined shape; In this method, a pair of annular holders having punching hole forming molds attached to the outer peripheral surface are movably fitted to the die roll in the length direction, and a cardboard sheet is formed. When punching into a fixed shape, the pair of annular holders are moved to both ends of the die roll to stand by at positions where punching is not performed, and a corrugated cardboard sheet is punched at a predetermined position on the surface of the die roll between these annular holders. After mounting the extruded plate, rotate the anvil roll and die roll and insert a cardboard sheet between these rolls. It was punched into a predetermined shape by feeding, then, after removing the above punching 抜成 form plate from the die roll is moved to the punch vent hole machining position toward each other on the die roll of the pair of annular holders,
Thereafter, by rotating an anvil roll and a die roll and supplying a corrugated cardboard sheet that has been punched into the fixed shape between these rolls, a predetermined portion of the corrugated cardboard sheet is used to form a punched hole forming die of an annular holder. It is characterized by processing a punched hole.

[Action]

When a pair of annular holders fitted on the die roll are moved in a direction away from each other and positioned at both ends of the die roll, a space between the annular holders where the cardboard sheet punching molding plate can be mounted is set. After the punched plate is attached to a predetermined portion of the die roll at the interval, the anvil roll and the die roll are rotated to supply a cardboard sheet between these rolls to form the cardboard sheet into a uniform shape. Punch out. During this punching process, the punching hole forming die material mounted on the outer peripheral surface of the annular holder only rotates integrally with the die rolls at both ends of the die rolls, and does not process the punching holes in the cardboard sheet.

Next, when punching holes such as handle holes in the punched cardboard sheet, after removing the cardboard sheet punching forming plate from the die roll, place the pair of annular holders in the punching hole forming position. Move along the die roll. In this state, when the anvil roll and the die roll are rotated and the punched corrugated cardboard sheet is supplied between these rollers, the punched hole forming mold attached to the ring-shaped holder is used to form a predetermined position on the corrugated cardboard sheet. A punch hole is formed.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.
(1) is an anvil roll whose surface is lined with a rubber sheet or the like. A die roll (2) is disposed below the roll (1), and a pair of upper and lower rolls (1) and (2) are arranged. By supplying the preformed corrugated cardboard sheet between the two rolls (1) and (2) while rotating, the corrugated cardboard sheet having a predetermined shape is formed by a punched and formed plate (3) detachably mounted on the surface of the die roll (2). (A)
Is configured to be punched.

As is known, a large number of mounting holes (4) are formed on the surface of the die roll (2) at regular intervals in the length direction and the circumferential direction.
(4) ... (4) are drilled.

As shown in FIG. 3, the stamping formed plate (3) is a mounting table (5) formed by bending a horizontally long rectangular plywood shorter than the length of the die roll (2) along the surface of the die roll (2). ), The punching blade (3a) protrudes from the periphery of the same shape as the corrugated cardboard sheet to be processed, and a predetermined edge is formed on a linear edge parallel to the length direction of the die roll (2). Slot forming blades (3b), (3b), (3b) are projected in the circumferential direction at every interval, and further, ruled line forming blades (3c) parallel to each other with a fixed circumferential interval between both curved edges. ) (3
c) is protruding.

A large number of fixing holes (6) are formed in the mounting table (5) vertically and horizontally at the same interval as the mounting holes (4) formed in the die roll (2). The punched plate (3) is detachably mounted on the inner surface of the plate (3) by fitting a plurality of shafts or the like projecting from the inner surface of the plate (3). It is configured to be detachably attached to the die roll (2).

In the die roll (2) thus configured, as shown in FIGS. 1 and 2, a linear guide groove (7) is engraved on a part of its surface over the entire length, and a pair of left and right annular holders ( 8) and (9) are fitted, and the sliding pieces (10) and (10) integrally fixed to the inner peripheral surfaces of the annular holders (8) and (9) are connected to the guide grooves (7). The two annular holders (8) and (9)
Is slidably disposed only in the length direction with respect to the die roll (2).

Further, a mounting hole (11) is provided in a part of the peripheral surface of the two annular holders (8) and (9), and the punching hole forming mold (12) is fitted into the mounting hole (11) so that the holder can be replaced. Installed.

(13) and (14) are a pair of left and right feed screw rods disposed on the same axis along the longitudinal direction of the die roll (2) in the vicinity of the lower peripheral portion of the die roll (2). Sticks (1
3) The center of the moving members (15), (15), (16) and (16), which consist of a set of plate-like bodies whose upper end surface is formed on the curved end surface along the curved surface of the die roll (2) in (14). Screw holes provided in the moving members (15) and (15), (16) and (1).
6) are screwed into the screw rods (13) and (14), respectively, with the same distance between the two annular end faces of the annular holders (8) and (9), and their upper end arc-shaped opposing ends are made circular. The annular holders (8) and (9) are engaged with lower portions of both side end surfaces.

(17) and (18) are appropriate rotation drive mechanisms such as motors for rotating the screw rods (13) and (14) forward and backward, respectively.

With such a configuration, in order to process the cardboard sheet (A) as shown in FIG. 5, first, the right and left screw rods (13) and (14) are rotated by the rotation drive mechanisms (17) and (18). When the moving members (15), (15), (16) and (16), which are respectively threaded through the threaded rods (13) and (14), are moved in a direction away from each other by their rotation, these moving members (1
5) The respective annular holders (8) and (9) engaged with (15), (16) and (16) are respectively moved along the guide grooves (7) while being fitted to the die roll (2). Member (15) (15),
(16) Moved together with (16).

Then, after moving both annular holders (8) and (9) to both ends of the die roll (2), they are stopped at that position, and then the die roll (2) between the annular holders (8) and (9) is moved. A mounting table (5) on which a cardboard sheet stamping forming plate (3) is mounted at a predetermined position on the surface of (1) (first).
Figure).

Thereafter, the anvil roll (1) and the die roll (2) are rotated and these rolls (1) are rotated.
(2) The corrugated cardboard sheet before processing is supplied during the process, and the corrugated cardboard sheet (A) having a predetermined shape is punched.

At this time, the pair of annular holders (8) and (9) waiting at both ends of the die roll (2) rotate integrally with the die roll (2) due to the rotation of the die roll (2).
The end faces of both sides of the ring are moved with moving members (15) (15), (16)
It rotates while sliding on the upper surface opposing the surface of 6), so that there is no trouble in punching the cardboard sheet (A).

Next, in order to process punched holes (d) and (d) such as a hole for a handle in the cardboard sheet (A), first, a die roll (2)
The mounting table (5) on which the cardboard sheet stamping and forming plate (3) is mounted is removed from the apparatus. Thereafter, when the rotation drive mechanisms (17) and (18) are driven to rotate the screw rods (13) and (14) in the opposite directions, the rotation of the screw rods (13) and (14) causes the movement member (15) to rotate. (15), (16) and (16) slide on the die roll (2) in a direction approaching each other in a state where they are engaged with both side end surfaces of the annular holders (8) and (9), and the punching hole (d) ) Stop when it reaches the processing position of (d).

When the cardboard sheet (A) is assembled into a case, punching holes (d) and (d) such as grip holes provided on both side walls of the case are determined, and these punching holes (d) are formed. The positioning in the case side wall width direction of (d) is set by the movement of the annular holders (8) and (9), and the positioning in the height direction is mounted on the annular holders (8) and (9). This is set by adjusting the position of the punched hole forming die (12) in the circumferential direction with respect to the die roll (2).

After moving the two annular holders (8) and (9) to a predetermined position in the center of the die roll (2), the upper and lower rolls (1) and (2) are rotated, and at the same time, the rolls (1) and (2) are rotated. The punched corrugated cardboard sheet (A) is supplied to a predetermined portion of the corrugated cardboard sheet (A), and punched holes (d) are formed by punching hole forming members (12) (12).
Is to process.

In the above embodiment, the left and right screw rods (13)
A set of moving members (15) and (15), respectively,
(16) and (16) are annular holders (8) and (9) for the distance between these moving members (15) and (15) and between (16) and (16) with respect to the screw rods (13) and (14). Can be adjusted according to the width dimension of the moving member, but one moving member is screwed into each of the left and right screw rods (13) and (14), and the upper end surface of the moving member is adapted by appropriate means. May be detachably connected to the lower peripheral surfaces of the annular holders (8) and (9).

Also, according to the above structure, the left and right screw rods (13) (14)
Are individually rotated by the respective rotary drive mechanisms (17) and (18), and the annular holders (8) and (9) are punched (d).
Although the movement can be adjusted to a position corresponding to the drilling position in (d), the moving member is screwed into both screw portions of one screw bar provided with the left and right screws, and the screw bar is connected to one screw bar. By rotating the rotary holder, the annular holders (8) and (9) may be moved and adjusted in the contact and separation directions via the moving member.

(Effect of the Invention) As described above, according to the cardboard sheet punching method of the present invention, a cardboard sheet is supplied between an anvil roll and a die roll, and the cardboard sheet is punched into a predetermined shape. A method of forming a punching hole such as a grip hole, in which a pair of annular holders having a punching hole forming mold attached to an outer peripheral surface are movably fitted to the die roll in a length direction, First, when punching a corrugated cardboard sheet into a predetermined shape, the pair of annular holders are moved to both ends of the die roll to stand by at a position where punching is not performed, and a predetermined surface of the die roll between these annular holders is set. After mounting the cardboard sheet punching molding plate at the position, rotate the anvil roll and die roll, and place the cardboard between these rolls. In order to perform punching into a fixed shape by supplying a roll sheet, these annular holders are attached to the die roll despite the fact that annular holders fitted with punch hole forming materials are fitted to the die rolls. By punching formed plate attached to the die roll surface between the annular holders without waiting for processing at the both ends and punching holes,
The corrugated cardboard sheet can be reliably punched into a fixed shape.

Next, after removing the punched-formed plate from the die roll, the pair of annular holders are moved to a punching hole processing position in a direction approaching each other on the die roll, and thereafter, the anvil roll and the die roll are rotated to rotate the die roll. By supplying the punched cardboard sheet between the rolls, a punched hole is processed by the punched hole forming mold of the annular holder in a predetermined portion of the cardboard sheet. It is possible to easily and accurately move the annular holder along the die roll to the position of a hole such as a handle hole to be formed in the corrugated cardboard sheet according to the size and shape of the corrugated cardboard sheet punched into the above-mentioned fixed shape. In this state, by supplying a corrugated cardboard sheet that has been punched into the above-described shape between the rollers in this state, In which in punch vent hole forming mold material that is mounted on an annular holder can be bored accurately punching vent holes in a predetermined portion of the corrugated cardboard sheet.

As described above, when punching a corrugated cardboard sheet into a fixed shape, the pair of annular holders are moved to both ends of the die roll, respectively, to stand by at a position where punching is not performed, and after this punching, a circle is formed. Since the annular holder is moved to the punching hole forming position and a punching hole is drilled in a predetermined portion of the cardboard sheet punched into the above-mentioned constant shape, a slot is provided in the front part, which has been difficult in the past. A punching hole such as a handle hole can be accurately and efficiently formed in a punched cardboard sheet of a different shape having a cutout portion provided at a rear portion thereof through a parallel ruled line.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is a simplified front view thereof, FIG. 2 is a simplified perspective view of a state in which a cardboard sheet punching-formed plate is removed, and FIG. 3 is a cardboard sheet punching-formed plate. 4 and 5 are plan views of the cardboard sheet. (1) ... anvil roll, (2) ... die roll,
(3) ... stamped molded plate, (7) ... guide groove, (8)
(9) ... annular holder, (12) ... punched hole forming die, (13) (14) ... screw rod, (15) (16) ... moving member, (17) (18) ... Rotary drive mechanism.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B31B 1/00-49/04 B26F 1/08 B26D 1/40

Claims (1)

(57) [Claims] 1. A method of supplying a cardboard sheet between an anvil roll and a die roll, punching the cardboard sheet into a predetermined shape, and then punching a punching hole such as a handle hole in the cardboard sheet. A pair of annular holders having a punched hole forming die attached thereto are movably fitted to the die roll in the length direction, and when punching a corrugated cardboard sheet into a fixed shape, the pair of annular holders are die rolled. After being moved to the both ends of the die to stand by at a position where punching is not performed, and a cardboard sheet punching plate is mounted at a predetermined position on the surface of the die roll between these annular holders, the anvil roll and the die roll are rotated. Punching into a certain shape by supplying a cardboard sheet between these rolls,
Next, after removing the punched-formed plate from the die roll, the pair of annular holders are moved to a punching hole processing position in a direction approaching each other on the die roll, and thereafter, the anvil roll and the die roll are rotated to rotate the die roll. By supplying a corrugated cardboard sheet that has been punched into the above-mentioned fixed shape between rolls, a punched hole is formed in a predetermined portion of the corrugated cardboard sheet by the punched hole forming mold of the annular holder. Punching method.