JP2005119780A - Splice device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a splice device preventing generation of wrinkle and crack in splicing of a paper. <P>SOLUTION: An old stencil paper 1a is clamped by a feed stopping roller 6 and a pressurization roller 18 at splicing of the paper by the feed stopping roller 6 arranged at a feed route 4 for feeding the stencil papers 1a, 2a paid out from stencil paper rolls 1, 2 to a paper processing mechanism and the pressurization roller 18 provided in opposed to the feed stopping roller 6. The old stencil paper 1a paid out is cut by splice heads 22a, 22b arranged at the stencil paper rolls 1, 2 side than both rollers 6, 18 at the splicing of the paper and splicing of the old stencil paper 1a and a new stencil paper 2a during stand-by is carried out. A pressurization driving cylinder 20 for clamping the stencil paper 1a by the feed stopping roller 6 and the pressurization roller 18 by moving the pressurization roller 18 is provided. The pressurization driving cylinder 20 switches the clamping pressure of the stencil paper 1a by the feed stopping roller 6 and the pressurization roller 18 to three stages of low pressure, strong pressure and further intermediate pressure, i.e., the intermediate pressure thereof. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a splicing device for splicing a new base paper fed from another base paper roll to an old base paper fed from a base paper roll.

Conventionally, when a base paper fed from a base paper roll is supplied to a paper processing mechanism, the base paper is supplied via a splicer device as disclosed in Patent Document 1. In such a splicer device, a paper processing mechanism is provided through a dancer mechanism that splices a new base paper fed from another base paper roll to a old base paper fed from a base paper roll by a splice head and temporarily stores the base paper. During the paper splicing, the base paper is supplied from the dancer mechanism so that the supply of the base paper to the paper processing mechanism is not stopped.
JP 2003-155153 A

  However, in such a conventional one, while the splicing is performed by the splice head, the supply speed of the old base paper becomes zero at the splice head. That is, the old base paper is nipped and cut in a state where the supply is stopped, and the new base paper is pasted on the old base paper. The supply of the base paper is resumed before the base paper temporarily stored in the dancer mechanism is exhausted. At the time of this paper splicing, the base paper is decelerated and accelerated. However, there is a problem that the base paper is wrinkled or cracked.

  An object of the present invention is to provide a splicing device that prevents generation of wrinkles and cracks at the time of paper splicing.

In order to achieve this problem, the present invention has taken the following measures in order to solve the problem. That is,
The two rollers at the time of paper joining are provided by a supply stop roller disposed in a supply path for supplying the base paper fed from the base paper roll to the paper processing mechanism, and a pressure roller provided facing the supply stop roller. By sandwiching the base paper,
In the splicing device for cutting the old base paper being fed out at the time of paper splicing and splicing the old base paper and the waiting new base paper by the splice head disposed on the base paper roll side from the both rollers,
Drive means for moving the pressure roller to sandwich the base paper by the supply stop roller and the pressure roller, the drive means sandwiching the base paper by the supply stop roller and the pressure roller It is a splicing device characterized in that the pressure can be switched between a low pressure and a strong pressure.

  The drive unit may be configured to be able to switch the holding pressure of the base paper by the supply stop roller and the pressure roller into three steps of a low pressure, a strong pressure, and an intermediate pressure therebetween. In addition, when starting the paper splicing by controlling the driving means, the holding pressure of the base paper by the supply stop roller and the pressure roller is reduced to a low pressure before stopping the rotation of the supply stop roller. A control circuit may be provided. Alternatively, when ending the paper splicing by controlling the driving means, after releasing the rotation stop of the supply stop roller, the holding pressure of the base paper by the supply stop roller and the pressure roller is reduced to a low pressure. A control circuit may be provided.

  As described above, the splicing device of the present invention has an effect of preventing the occurrence of wrinkles and cracks at the time of paper splicing by pressing the pressure roller against the base paper with a light force.

The best mode for carrying out the present invention will be described below in detail with reference to the drawings.
As shown in FIG. 1, reference numerals 1 and 2 denote base paper rolls, and one old base paper roll 1 is fed to a paper processing mechanism (not shown) and the amount of remaining old base paper 1a is reduced. Indicates a small state. The other new raw paper roll 2 still has a large amount of new raw paper 2a before being supplied to the paper processing mechanism.

  A supply stop roller 6 is disposed in the supply path 4 of the old base paper 1a supplied to the paper processing mechanism. After the old base paper 1a is wound around the supply stop roller 6, the roll angle increasing roller 8 is supplied to the dancer mechanism 10, and is supplied from the dancer mechanism 10 to the paper processing mechanism through the exit roller 12. The roll angle increasing roller 8 is made of aluminum, and is disposed at a position where the roll angle of the old base paper 1a wound around the supply stop roller 6 is increased, thereby preventing slipping. The supply stop roller 6 is configured to be braked by an electromagnetic brake 54 described later.

  The dancer mechanism 10 includes a plurality of fixed roller mechanisms 14 and a plurality of moving roller mechanisms 16, and is a well-known mechanism in which the old base paper 1 a is wound between the old base paper 1 a and the old base paper 1 a can be stored. When the supply of the old base paper 1a from the old base paper roll 1 is stopped, the moving roller mechanism 16 can be moved to supply the stored old base paper 1a to the paper processing mechanism.

  A pressure roller 18 is provided so as to face the supply stop roller 6. The pressure roller 18 is configured to be moved toward and away from the supply stop roller 6 by a pressure drive cylinder 20 as drive means. Further, the pressure roller 18 is made of aluminum, is light in weight, and has a small inertia.

  A pair of splice heads 22 a and 22 b is provided in the supply path 4 between the both base paper rolls 1 and 2 and the supply stop roller 6. Both splice heads 22a and 22b have the same basic configuration and are symmetrical with the supply path 4 in between. As shown in FIG. 2, the splice heads 22a and 22b are arranged along the supply path 4 from the base paper rolls 1 and 2 to the supply stop roller 6, and idle rollers 24a and 24b, drag bars 26a and 26b, and a cutting mechanism 28a. 28b and nip bars 30a, 30b are arranged.

  The old base paper 1a and the new base paper 2a are wound around the idle rollers 24a and 24b, respectively. A receiving plate 32 is provided between the pair of splice heads 22a and 22b so as to face both drag bars 26a and 26b. The drag bars 26a and 26b are received by driving the drag bar cylinders 34a and 34b. By moving toward the plate 32, the old base paper 1a and the new base paper 2a can be sandwiched between the drag bars 26a, 26b and the receiving plate 32, respectively.

  The cutting mechanisms 28a and 28b can move the knife bars 38a and 38b toward the old base paper 1a and the new base paper 2a by the knife cylinders 36a and 36b, respectively, and cut the old base paper 1a and the new base paper 2a in the width direction. It is configured as follows. Both the nip bars 30a and 30b are arranged to face each other with the supply path 4 therebetween, and are moved toward the supply path 4 by the nip cylinders 40a and 40b, respectively. It is comprised so that can be clamped. The nip bars 30a and 30b incorporate a vacuum suction device (not shown), and are configured to suck and hold the leading edge of the old base paper 1a and the leading edge of the new base paper 2a, respectively.

  As shown in FIG. 3, the pressurizing drive cylinder 20 is connected to a switching valve 42, and the switching valve 42 is connected to the pressurizing drive cylinder 20 and the low pressure circuit 46 in accordance with a signal from the control circuit 44. Or the pressure driving cylinder 20 and the intermediate pressure circuit 48 are connected, or the pressure driving cylinder 20 and the high pressure circuit 50 are connected.

  The low pressure circuit 46 reduces the pressure of the compressed air from the air pressure source 52 and supplies, for example, compressed air having a low pressure of 5 MPa to the pressurizing drive cylinder 20 via the switching valve 42. The intermediate pressure circuit 48 reduces the pressure of the compressed air from the air pressure source 52 and supplies, for example, compressed air having an intermediate pressure of 15 MPa to the pressurizing drive cylinder 20 via the switching valve 42. The high pressure circuit 50 reduces the pressure of the compressed air from the air pressure source 52 and supplies, for example, high pressure compressed air of 30 MPa to the pressurizing drive cylinder 20 via the switching valve 42.

  Here, the low pressure is a pressure that is low enough to allow the pressure driving cylinder 20 to press the pressure roller 18 against the old base paper 1a that is lightly wound around the supply stop roller 6. The medium pressure is a moderate pressure that allows the pressure driving cylinder 20 to move the pressure roller 18 toward the supply stop roller 6. The high pressure is high enough to stop the supply of the old base paper 1a by sandwiching the old base paper 1a between the pressure roller 18 and the supply stop roller 6 at the time of paper splicing described later by the pressure driving cylinder 20. Pressure.

Next, the operation of the above-described splicing device of the present embodiment will be described together with the paper splicing control process performed by the control circuit 44 shown in FIG.
The old base paper 1a from the old base paper roll 1 passes through the splice head 22a, is wound around the supply stop roller 6, and then passes through the dancer mechanism 10 and is supplied from the exit roller 12 to the paper processing mechanism. While the old base paper 1a is being unwound from the old base paper roll 1, the tip of the new base paper 2a of the new base paper roll 2 is adsorbed to the nip bar 30b of the splice head 22b by a vacuum suction device. At that time, the splice head 22b is retracted to a position indicated by a two-dot chain line in FIG.

  When the old base paper 1a is unwound from the old base paper roll 1 and the remaining old base paper 1a is reduced, a paper splicing control process is executed to determine whether or not to perform paper splicing (step 100). Whether or not to perform paper splicing is determined based on whether or not a splice signal has been input. When a splice signal has been input, paper splicing is executed. As shown by the solid line in FIG. 1, the splice heads 22a and 22b are moved in advance to positions facing each other with the receiving plate 32 therebetween.

  First, the switching valve 42 is switched to connect the intermediate pressure circuit 48 and the pressure driving cylinder 20, and the pressure driving cylinder 20 is driven to move the pressure roller 18 toward the supply stop roller 6. (Step 110). The old base paper 1 a is sandwiched between the pressure roller 18 and the supply stop roller 6.

  After a predetermined time has elapsed since the pressure roller 18 was moved, the switching valve 42 is switched to connect the low pressure circuit 46 and the pressure drive cylinder 20 (step 120). Thereby, the pressure drive cylinder 20 presses the pressure roller 18 against the old base paper 1a with a light force. Thereby, wrinkles and cracks do not occur in the old base paper 1a being supplied.

  Next, it is determined whether or not the operation preparation is completed (step 130). When the operation of pressing the pressure roller 18 against the old base paper 1a with a light pressure is completed, it is determined that the preparation has been completed, and the switching valve 42 is switched to connect the high pressure circuit 50 and the pressure drive cylinder 20 (step). 140). Further, the electromagnetic brake 54 of the supply stop roller 6 is operated to brake the supply stop roller 6 (step 150).

  Further, the old base paper roll 1 is also braked in the same manner to make a sudden stop (step 160). Next, the supply speed of the old base paper 1a is detected, and it is determined whether or not the travel speed of the old base paper 1a is zero (step 170). If the traveling speed is zero, the drag bar 26a of the splice head 22a on the old base paper 1a side is moved by driving the drag bar cylinder 34a (step 180). Thus, the old base paper 1a is sandwiched between the drag bar 26a and the receiving plate 32.

  Further, both the nip cylinders 40a and 40b are driven to hold the old base paper 1a and the new base paper 2a by the nip bars 30a and 30b (step 190). As a result, the new base paper 2a is attached to the old base paper 1a by the adhesive tape attached to the tip of the new base paper 2a. The old base paper 1a is stretched between the nip bars 30a and 30b and the drag bar 26a.

  Next, the knife cylinder 36a of the splice head 22a on the old base paper 1a side is driven to advance the knife bar 38a (step 200). Thereby, the old base paper 1a is cut. Then, the drag bar cylinder 34a, both nip cylinders 40a and 40b, and the knife cylinder 36a are driven to retract the drag bar 26a, both nip bars 30a and 30b, and the knife bar 38a (step 210).

  Subsequently, the electromagnetic brake 54 of the supply stop roller 6 is released (step 220), the switching valve 42 is switched, and the low pressure circuit 46 and the pressure drive cylinder 20 are connected (step 230). Therefore, the pressure roller 18 is pressed with a light force, and the old base paper 1 a is lightly held between the supply stop roller 6 and the pressure roller 18.

  Next, the supply stop roller 6 is rotated at an accelerated speed (step 240). As a result, the new base paper 2a spliced to the old base paper 1a passes between the supply stop roller 6 and the pressure roller 18, is supplied to the dancer mechanism 10, and passes through the exit roller 12 from the dancer mechanism 10 to process the paper. Supplied to the mechanism.

  When the portion where the old base paper 1a and the new base paper 2a are bonded to each other passes between the supply stop roller 6 and the pressure roller 18, the pressure roller 18 applies the urging force of the pressure driving cylinder 20. It moves against and passes the overlapping part of the old base paper 1a and the new base paper 2a. The pressure roller 18 is made of aluminum and has a light weight, so it moves quickly. Further, during acceleration, the pressure roller 18 is pressed with a light force by the pressure drive cylinder 20 to prevent wrinkles and cracks from occurring in the new base paper 2a passing therethrough.

  The present invention is not limited to such embodiments as described above, and can be implemented in various modes without departing from the gist of the present invention.

It is a front view of the splice device as one embodiment of the present invention. It is an enlarged front view of the splice head of this embodiment. It is explanatory drawing which shows the pneumatic circuit and electric circuit of this embodiment. 5 is a flowchart illustrating an example of a splicing control process performed in the control circuit of the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Old base paper roll 1a ... Old base paper 2 ... New base paper roll 2a ... New base paper 4 ... Supply path 6 ... Supply stop roller 8 ... Rolling angle increase roller 10 ... Dancer mechanism 12 ... Outlet roller 14 ... Fixed roller mechanism 16 ... Moving roller mechanism 18 ... Pressure roller 20 ... Pressure drive cylinders 22a, 22b ... Splice heads 24a, 24b ... Idle rollers 26a, 26b ... Drag bars 28a, 28b ... Cut mechanisms 30a, 30b ... Nip bars 38a, 38b ... Knife bar 42 ... Switching valve 44 ... Control circuit 46 ... Low pressure circuit 48 ... Medium pressure circuit 50 ... High pressure circuit 52 ... Air pressure source 54 ... Electromagnetic brake

Claims (4)

The two rollers at the time of paper joining are provided by a supply stop roller disposed in a supply path for supplying the base paper fed from the base paper roll to the paper processing mechanism, and a pressure roller provided facing the supply stop roller. By sandwiching the base paper,
In the splicing device for cutting the old base paper being fed out at the time of paper splicing and splicing the old base paper and the waiting new base paper by the splice head disposed on the base paper roll side from the both rollers,
Drive means for moving the pressure roller to sandwich the base paper by the supply stop roller and the pressure roller, the drive means sandwiching the base paper by the supply stop roller and the pressure roller A splicing device characterized in that the pressure can be switched between a low pressure and a strong pressure. The driving means is capable of switching the holding pressure of the base paper by the supply stop roller and the pressure roller into three stages of a low pressure, a strong pressure, and an intermediate pressure therebetween. The splicing device according to claim 1. When starting the paper splicing by controlling the driving means, before the rotation of the supply stop roller is stopped, the holding pressure of the base paper by the supply stop roller and the pressure roller is set to a low pressure. 3. The splicing device according to claim 1, further comprising a control circuit. When finishing the splicing by controlling the driving means, after releasing the rotation stop of the supply stop roller, the holding pressure of the base paper by the supply stop roller and the pressure roller is set to a low pressure. 4. The splicing device according to claim 1, further comprising a control circuit.

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