JP4697955B2 - Punching device - Google Patents

Description

  The present invention relates to a punching apparatus capable of continuously performing punching with continuous paper such as traveling paper and tack paper, and punching such as half cut.

  In this type of apparatus, continuous paper is passed between a die roll and a receiving roll, and the continuous paper is punched out by a die provided on the peripheral surface of the die roll. In this case, when changing the punch size, a method of exchanging the die roll in accordance with the change of the punch size is generally performed.

  In addition, when a flexible die having various sizes of magnetism is attached to a large-sized magnet cylinder and punching is performed for each size, it may be processed by intermittently feeding continuous paper according to the size. is there.

JP 2002-233994 A JP 2005-017552 A

  As an example of the conventional apparatus, as shown in Patent Document 1, continuous paper, film, etc. are passed between the male drum and the female drum, and the continuous paper, film, etc. are punched by the punching die of the male drum. In the case of the punching device to be applied, if the size of the punching process is to be changed, the male torso configured as a separate unit is replaced, but in this case, time and labor are required to replace the male torso. Therefore, there is a problem that workability is low, and it is necessary to prepare an expensive rotary die cutter, which is a male drum, for each size, resulting in an increase in product cost.

  As another conventional example, there is a variable printing processing machine disclosed in Patent Document 2. In this case, intermittent running of continuous paper is necessary, and this continuous paper is intermittently used as compared with the case of continuous feeding. Various mechanisms and parts are required for feeding, and the manufacturing cost of the apparatus is greatly increased. In addition, the operability such as changing the size of intermittent running is complicated, and there is a problem that the workability is deteriorated.

  The present invention has been made in view of the above, and provides a punching device that can perform various sizes of punching by an easy method without changing die rolls or intermittently feeding continuous paper. It is intended.

  In order to achieve the above object, a punching apparatus according to the present invention includes a die roll that is independently controlled in rotation and detachably mounts a die on a peripheral surface, and a die roll that rolls into contact with a position separated in the rotational direction of the die roll. A pair of receiving rolls that continuously rotate in the same circumferential direction as the die roll under the pressure of the die attached to the die roll, and the continuous paper that is positioned between the receiving rolls and passed between the receiving roll and the die roll is slackened. And a paper path adjusting roll provided so as to be movable in a direction to adjust the slack length of the continuous paper between the two receiving rolls.

  In the above-described configuration, the circumferential length of the die mounted on the die roll is the distance between the rolling contacts o and p with the respective die rolls of the receiving rolls, and the distance between the rolling contact points shorter in the circumferential direction of the die roller. Longer than o to p and shorter than the distance p to o between the longer contact points in the circumferential direction is used.

  Further, in the above configuration, when the slack length of the continuous paper between the rolling contacts o and p of the both receiving rolls with the respective die rolls is L, the circumferential length of the die rolls between the op length and the nL (Where n is an odd integer).

  According to the present invention, since the continuous paper continuously rotates at a constant speed and the die roll rotates at a constant speed, different punching can be performed only by replacing the die without replacing the die roll. .

  In addition, as described above, continuous paper is not intermittently fed and can be punched by continuous running at a constant speed, eliminating the need for various mechanisms and parts for intermittent running of continuous paper as in the past. Thus, the manufacturing cost of the device can be significantly reduced. In addition, operability such as changing the size of intermittent travel is simplified, and workability can be improved.

  Further, the work of converting the die roll, which is a heavy object, is eliminated, the work safety can be improved and the time can be shortened. In addition, the storage space for the replacement die roll is not required, and a great economic effect can be achieved. .

  FIG. 1 schematically shows an embodiment of the present invention, in which 1 is a die roll composed of a magnet cylinder, 2a and 2b are spaced apart from the lower outer peripheral surface of the die roll 1 in the direction of rotation thereof. The first and second receiving rolls are in contact with each other, and a paper path adjusting roll 3 is provided below the two receiving rolls 2a and 2b so that the position can be adjusted in the vertical direction.

  The both receiving rolls 2a and 2b are configured to continuously rotate at a constant speed by a prime mover in the same direction, for example, in the clockwise rotation direction in FIG. On the other hand, the die roll 1 that is in rolling contact with each other is driven by a single motor so as to be capable of shifting independently, and is rotated in the same circumferential direction as the receiving rolls 2a and 2b on the rolling contact surface, that is, counterclockwise in FIG. In the direction, it is possible to perform the same peripheral speed rotation, variable speed rotation and temporary stop as the receiving rolls 2a and 2b in accordance with the timing described later.

  And between the rolling contact surface of this die roll 1 and both receiving rolls 2a and 2b, the continuous paper 4 continuously runs at a constant speed according to the rotation direction thereof, and the first and second receiving rolls 2a, It is slacked in a loop shape over a certain length to be described later between 2b, and the tension of this part is maintained by the paper path adjusting roll 3.

  A guide roll 5a and a continuous feed roll device 6 are provided on the upstream side of the first receiving roll 2a, and a guide roll 5b and a pulling roll device 7 are provided on the downstream side of the second receiving roll 2b. A continuous paper supply device (not shown) is provided on the upstream side of the continuous feed roll device 6, and a winding device 8 is provided on the downstream side of the pulling roll device 7.

  On the downstream side of the continuous feed roll 6, there is provided a laminating and pressing roll device 10 for laminating the laminate 9 on the surface of the continuous paper 4, and a lifting roll device 11 on the upstream side of the pulling roll device 7.

  A die 12 having a flexible structure and attached to the die roll 1 by magnetic force is attached to the peripheral surface of the die roll 1 so as to be detachable by magnetic force, and travels between the rolls according to the rotation of the die roll 1. The first processed surface a is punched on the continuous paper 4 while the die 12 is in rolling contact with the first receiving roll 2a, and the second processed surface b is punched while the die 12 is in contact with the second receiving roll 2b. It has become.

  FIG. 2 and subsequent figures are action explanatory views showing the rotation control timing of the die roll 1 with respect to the circumferential length of the die 12 and the length of the loop portion of the continuous paper 4. In this explanatory view, in order to explain the operation of the present invention in an easy-to-understand manner, a state in which the first processing surface a and the second processing surface b are sequentially processed on the running continuous paper 4 will be described.

In FIG. 2, the circumferential length of the die 12 is L, the start end thereof is A, the end is B, and the rolling contact points of the die roll 1 and each of the receiving rolls 2 a and 2 b are moved o, p And The front end of the first processed surface a that is punched from the die 12 at the portion that is in rolling contact with the first receiving roll 2a is Q ₁ , and the rear end is Q ₂ . At this time, Q _{1 to} Q ₂ = A to B = L.

FIG. 2 shows a machining start state of the first machining surface a, and the first machining surface a is machined by the same peripheral speed rotation of the die roll 1 and each of the rolls 1, 2a, 2b. FIG. 3 shows a state in which the die roll 1 is rotated by an inter-op circumferential length, and the tip A of the die 12 is in rolling contact with the second receiving roller 2b. Processing of b is started. The starting end of the second machining surface b at this time is R ₁ and the end is R ₂ . And also _R 1 _~R 2 = _A~B = L in the second processing surface b at this time.

FIG. 4 shows a state where the first machining surface a is finished, while the second machining surface b at this time is a state machined by the peripheral length between oBs on the way. FIG. 5 shows a processing end state of the second processing surface b in which the die roll 1 has rotated from p to B (peripheral length between ops) from the state of FIG. Unprocessed portion is in progress over the first receiving roll 2a in Q ₂ ~o (op between circumference) at this time.

Then, the continuous paper 4 further travels from this state, and the end of the non-processed portion (starting end Q ₁ of the next first processing surface) facing the first receiving roll 2a is the point of action o of the first receiving roll 2a. during which is reached, the rotation of the die roll 1 is shifting, in the case shown in FIG. 5, by A~o is longer than O～Q ₁ in FIG, die roll 1 and accelerated starting end a of the die 12 is Q ₁ At the same time, the point o is reached. FIG. 6 shows such a state. From this state, the rotational peripheral speed of the die roll 1 becomes the same as that of the receiving rolls 2a and 2b, and the continuous paper 4 on the first receiving roll 2a has a non-Q ₂ -Q _{1 condition} . 3 and FIG. 4, the first processing surface a is processed again as shown in FIGS. 3 and 4. At the same time, the second receiving roll 2b receives R ₂ from the end of the second processing surface b in the state shown in FIG. the length of ～P～R ₁ is a non-working portion at again after a (first receiving first processing surface a which is processed by roll 2a) second processing surface b (first receiving roll 2a Part) is processed.

In the first receiving roll 2a in this manner, the first processing surface a over the length of the die 12 A~B _(Q 1 _{~Q 2)} is non-machined portion of this same length is processed per pass . On the other hand, in the second receiving roll 2b, the second machining surface b is similarly shifted from the machining of the first machining surface a by the peripheral length between the ops of the die roll 1 (delayed). Surface a is machined for each pass.

  As described above, at the position of the first receiving roll 2a, the first processed surface a is repeatedly processed on the continuous paper 4 with a non-processed portion having the same length as the continuous paper 4, and at the position of the second receiving roll 2b. The second machining surface b having the same length and the same length as the first machining surface a is repeatedly machined into a portion that has become a non-machined portion at the position of the first receiving roll 2a.

  At this time, the slack length of the continuous paper 4 between the rolling contacts o and p between the receiving rolls 2a and 2b and the die roll 1 as a condition for alternately processing the processing surfaces a and b without a gap. Now, the paper path will be described.

For the first processing surface a and the second processing surface b is processed alternately with no gap, for example in FIG. 5, the processing beginning to Q ₁ first processing surface a according to the first receiving roll 2a is second receiving it is sufficient to continuously working end R ₂ of the second processing surface b by the roll 2b of. This is the same in the other FIGS. 3 and 4 as long as Q ₁ and R ₂ are continuous. At this time, R ₂ to p in FIG. 4 are the per-op circumferences of the die roll 1, and Q _{2 to} o in FIG. 5 are the inter-op perimeters of the die roll 1.

From this, the slack length W of the continuous paper 4 between the rolling contacts o and p with the die rolls 1 of the first and second receiving rolls 2a and 2b is (Q _{1 to} Q ₂ ) + ( R _{2 to} o), that is, (Q _{1 to} Q ₂ ) + (inter-op circumference). In FIG. 5, (Q _{1 to} Q ₂ ) + (Q _{2 to} o), that is, (Q _{1 to} Q ₂ ) + (inter-op peripheral length). At this time, since (Q _{1 to} Q ₂ ) = L, W = L + (inter-op length).

  This length is the minimum length, and when the slack length W is increased with a margin, it becomes nL + (inter-op peripheral length). However, n is an odd integer as a condition for alternately processing the first processed surface a and the second processed surface b.

  FIG. 7 is an explanatory view showing a limit size in which the circumferential length of the processed surface by the die 12 is minimum.

  In FIG. 7, when the circumferential length L of the die 12 is the same as the inter-op circumferential length of the die roll 1, at the moment when the machining of the second machining surface b at the point p of the second receiving roll 2 b is completed. The tip A of the die 12 needs to reach the point o of the first receiving roll 2a, and the continuous processing is impossible due to the time restriction at this time. From this, the circumferential length of the processing surface is shown. It is necessary that L is longer than the circumference between the ops.

FIG. 8 shows that when the circumferential length L of the die 12 is longer than ½ of the circumferential length of the die roll 1 and the end B thereof is the p point, the circumferential direction between the starting end A and the o point thereof. distance A~o indicates a shorter than the distance O～Q ₁ between starting _{Q 1,} point o of the first processing surface a to be processed by the die 12. In this case, as shown in FIG. 8, the die roll 1 rotating at the same peripheral speed as the running speed of the continuous paper 4 is decelerated and rotated from the time when the processing of the second processing surface 6 is completed. As the starting edge Q1 of the processed surface a reaches the point o, it slowly rotates by a circumferential distance A to o, and the die roll 1 rotates again at the same peripheral speed as the continuous paper 4 from the point when A reaches o. This first processed surface a is punched.

When the length of the die 12 is further longer and the end B of the die 12 is at the point p in FIG. 8, the starting end A of the die 12 is as close as possible to the point o. If the distance between the near point o as possible, the die roll 1 is stopped for while to Q ₁ continuous paper 4 reaches the point o. If the circumferential length of the die 12 is longer than the length obtained by subtracting the length of o to p from the circumferential length of the die roll 1, the die 12 comes into contact with both the receiving rolls 2a and 2b at the same time, so that the processing becomes impossible. Therefore, the limit in the length direction is a length that does not exceed the length obtained by subtracting o to p from the circumferential length of the die roll 1.

FIG. 9 shows a case where the circumferential length L of the die 12 is ½ of the circumferential length of the die roll 1, and the circumferential lengths o to A to the starting ends A and o when the end B of the die 12 is at the point p. a case where the distance O～Q ₁ from o point to the machining start to Q ₁ first processing surface a are the same, the die roll 1 in this case is increased for each machining termination at the second receiving roll 2a The sheet is always rotated at the same speed as the continuous paper 4 without being decelerated or decelerated, and the same punching process is alternately performed by the receiving rolls 2a and 2b.

  As described above, these rolls 1, 2 a, 2 b are caused by the constant speed rotation of the first and second receiving rolls 2 a, 2 b and by the variable speed rotation or circumferential speed rotation of the die roll 1, which is in rolling contact therewith, and the temporary stop. On the continuous paper 4 traveling between them, the die 12 attached to the die roll 1 is processed by rolling contact with the first receiving surface 2a and the second receiving roll 2b. Two machining surfaces b are alternately and continuously machined.

  At this time, the continuous paper 4 between p and o in FIG. 2 is looped between the first and second receiving rollers 2a and 2b, and the slack length between them is the length of nL + (peripheral length between op). By doing so, it is continuously processed without a gap between the processing surfaces a and b.

  In the above-described embodiment, an example in which a magnet cylinder is used for the die roll 1 and a flexible die that is magnetically attracted to the magnet cylinder is used for the die 12 that is detachably attached to the die roll 1. It does not have to be a magnet cylinder, and the die 12 does not have to be a flexible die that attracts magnetic force to it. For example, it may be a winding type or a screwing type. I just need it. The die roll 1 is mounted on the frame via a bearing device 13, and the die roll 1 can be replaced with the bearing device 13 or as a single unit.

It is a configuration explanatory view schematically showing a device of the present invention. It is explanatory drawing which shows the process start end state of a 1st process surface. It is explanatory drawing which shows the process start end state of a 2nd process surface. It is explanatory drawing which shows the process termination state of a 1st process surface. It is explanatory drawing which shows the process termination state of a 2nd process surface. It is explanatory drawing which shows the next process start end state of a 1st process surface. It is explanatory drawing which shows the minimum case of the periphery of die | dye. It is explanatory drawing which shows the case where the periphery of die | dye is longer than 1/2 of the periphery of die roll. It is explanatory drawing which shows the case where the periphery of die | dye is 1/2 of the periphery of die roll.

Explanation of symbols

a, b: first and second machining surfaces, L: circumferential length of the die, o, p: rolling contact between the die roller and the receiving roller, Q ₁ , Q ₂ , R ₁ , R ₂ ... start edge of the machining surface 1 and die roll, 2a, 2b, receiving roll, 3 ... paper path adjusting roll, 4 ... continuous paper, 5a, 5b ... guide roll, 6 ... continuous feed roll device, 7 ... pulling roll device, 8 ... winding Device: 9 ... Laminate, 10 ... Laminate pressure roll device, 11 ... Lifting roll, 12 ... Die, 13 ... Bearing device.

Claims (3)

  Continuously controlled in the same circumferential direction as the die roll under the control of the rotation of the die roll, which is attached to the circumferential surface of the die roll so that the die can be attached and removed, and the die roll attached to the die roll in contact with the die roll. A pair of rotating receiving rolls, and a continuous paper that is positioned between both receiving rolls and passed between the receiving rolls and the die roll is guided in a slack state. And a paper path adjusting roll provided so as to be movable in a direction for adjusting the sheet.   The circumferential length of the die mounted on the die roll is the distance between the contact points o and p of each of the receiving rolls with the respective die roll, and is longer than the distance between the contact points o to p which is shorter in the circumferential direction of the die roll. 2. The punching device according to claim 1, wherein the distance between the contact points p to o which is longer in the circumferential direction is shorter. Length of continuous paper between the rolling contacts o and p with the respective die rolls of both receiving rolls, when the circumferential length of the die is L, the length obtained by adding the inter-op peripheral length of the die roll and nL The punching apparatus according to claim 1, wherein n is an odd integer.

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