JP7392989B2 - Paper tube manufacturing equipment - Google Patents

Description

The present invention relates to an apparatus for manufacturing paper tubes using tape-shaped continuous paper.

Conventionally, equipment for producing paper tubes using tape-shaped continuous paper coats a tape-shaped continuous paper with a coating liquid such as glue or oil, and then spirally moves the tape-shaped continuous paper onto a mandrel by a predetermined amount. A paper tube that is manufactured by winding a paper tube into a continuous paper tube, and then cutting the continuous paper tube into a predetermined length while rotating with respect to a mandrel and proceeding downstream in the axial direction of the mandrel. Various manufacturing devices have been disclosed.
For example, Patent Document 1 discloses a coating sponge for coating (coating) an adhesive (coating liquid) on a strip of paper (tape-like continuous paper), and a mandrel shaft on which the strip of paper is fed diagonally to the axis and wrapped around it. A paper tube manufacturing apparatus is disclosed that includes a mandrel and a cutting blade that cuts a spirally wound body (continuous paper tube) formed by winding and bonding paper strips to form a paper tube.

Japanese Patent Application Publication No. 2013-256131

Paper tube manufacturing equipment that manufactures paper tubes using such continuous paper is required to reduce the amount of glue when cutting the formed continuous paper tube into a predetermined length, if the coating liquid applied to the continuous paper is glue. If there is too much glue, the glue may not be dry and the paper cannot be cut, and if there is too little glue, the bonded continuous paper may come undone. If the coating liquid applied to continuous paper is oil, if there is a large amount of oil, the oil may not be dry at the time of cutting and it may not be possible to cut it, and if the amount of oil is small, the continuous paper wrapped around the mandrel may be cut. Due to the small amount of oil applied to the inner circumferential surface of the tube, excessive friction occurs between the continuous paper tube and the mandrel, causing the continuous paper tube to rotate and advance smoothly against the mandrel. This may cause problems such as not being able to do so.
Therefore, it is necessary to maintain an appropriate amount of the coating liquid applied to the continuous paper.
However, in the paper tube manufacturing apparatus disclosed in Patent Document 1, a coating sponge is impregnated with an adhesive, and the adhesive is applied to the paper strip by bringing the paper strip into contact with the coating sponge. When the paper strip comes into contact with the coating sponge and the adhesive is applied to the paper strip, if the moving speed (transport speed) of the paper strip changes, the adhesive applied from the coating sponge to the paper strip changes. The amount changes. Therefore, the paper tube manufacturing apparatus disclosed in Patent Document 1 cannot maintain an appropriate amount of adhesive applied to the paper strip when the speed at which the paper strip is moved changes.

The present invention has been made to solve the above problems, and its purpose is to maintain an appropriate amount of coating liquid applied to continuous paper even if the conveyance speed of continuous paper changes. The purpose of the present invention is to provide a paper tube manufacturing device that can perform the following steps.

A first paper tube manufacturing apparatus of the present invention includes a paper supply section that supplies a plurality of rows of tape-shaped continuous paper through separate transport paths, and a paper supply section that is provided downstream of the paper supply section in the continuous paper transport direction; A winding section that spirally winds and conveys a plurality of rows of continuous paper to form a continuous paper tube, and a winding section that is provided between the paper supply section and the winding section, and that is supplied from the paper supply section. a first coating device that applies a coating liquid other than glue to at least one row of continuous paper among the plurality of rows of continuous paper, and a first coating device that is provided between the paper supply section and the winding section, and the paper supply section Coating comprising a second coating device for applying glue to one row of continuous paper of the plurality of rows of continuous paper supplied from the continuous paper other than the continuous paper to which the coating liquid is applied by the first coating device. a controller, a transport speed detection means for detecting the transport speed of at least one row of continuous paper among the plurality of rows of continuous paper to which the coating liquid is applied by the first coating device , and a controller. In the paper tube manufacturing apparatus, the first and second coating devices include a coating liquid container that stores a coating liquid, and are rotated by a motor to transfer the coating liquid in the coating liquid container to the plurality of continuous rows. a coating roller that coats at least one row of continuous paper among the sheets, and the conveyance speed detection means detects the first coating device in at least one of the conveyance paths in which the first coating device is provided. a speed detection roller that is provided on the downstream side in the continuous paper conveyance direction and on the upstream side in the continuous paper conveyance direction of the winding section, around which the continuous paper is wound and rotates as the continuous paper is conveyed; and rotation of the speed detection roller. and a rotation amount detection means for detecting a rotation amount and inputting the detected amount to the control section, and the control section determines the conveyance speed of the continuous paper from the rotation amount per unit time of the speed detection roller detected by the rotation amount detection means. The rotation speed of the motor is set so that the amount of coating liquid applied is appropriate according to the conveyance speed of the continuous paper, and the rotation speed of the motor is set to the conveyance speed of the continuous paper detected by the conveyance speed detection means. This paper tube manufacturing apparatus is characterized in that it is configured to rotate at a rotation speed set so that an appropriate amount of coating liquid is applied in accordance with the above.

In the first paper tube manufacturing apparatus of the present invention, the second coating device includes a supply roller that is rotated by the motor and makes the coating liquid in the coating liquid container adhere to the coating roller; and a film thickness adjustment mechanism that adjusts a gap between an outer peripheral surface of the application roller and an outer peripheral surface of the application roller to uniformly adjust the film thickness of the application liquid adhering to the application roller, and the application roller The roller is provided so as to be movable toward and away from the roller, and is rotated by the motor to apply the applied coating liquid to at least one row of continuous paper among the plurality of rows of continuous paper, and to adjust the film thickness. The adjustment mechanism includes a gap adjustment means that adjusts the gap by moving the application roller in a direction toward the supply roller and a direction away from the supply roller, and numerically grasps the adjustment amount of the gap adjusted by the gap adjustment means. The paper tube manufacturing apparatus may include an adjustment amount grasping means.

According to the paper tube manufacturing apparatus having this configuration, the amount of the coating liquid applied can be changed depending on conditions such as the type of continuous paper, the type of coating liquid, the temperature of the coating liquid, and the temperature and humidity of the atmosphere. Furthermore, the amount of coating liquid to be applied can be repeatedly adjusted accurately and uniformly.

A second paper tube manufacturing apparatus of the present invention is provided with a paper supply unit that supplies a plurality of rows of tape-shaped continuous paper through separate transport paths, and a paper supply unit that is provided downstream of the paper supply unit in the continuous paper transport direction; A winding section that spirally winds and conveys a plurality of rows of continuous paper to form a continuous paper tube, and a winding section that is provided between the paper supply section and the winding section, and that is supplied from the paper supply section. a first coating device that applies a coating liquid other than glue to at least one row of continuous paper among the plurality of rows of continuous paper; and a first coating device that is provided between the paper supply section and the winding section, and that is provided between the paper supply section and the winding section; an application unit having a second application device that applies glue to one row of continuous paper among the supplied continuous paper of the plurality of rows and other than the continuous paper on which the coating liquid is applied by the first application device; , a paper tube comprising: a conveying speed detecting means for detecting the conveying speed of at least one row of continuous paper among the plurality of rows of continuous paper to which a coating liquid is applied by the first coating device ; and a control unit. The first coating device includes a coating liquid container that stores a coating liquid, and a first coating device that is rotated by a first motor to apply the coating liquid in the coating liquid container onto the continuous paper. The second applicator includes a glue container that stores glue , a supply roller that is rotated by a second motor and causes the glue in the glue container to adhere to the second applicator roller, and the second applicator. a second applicator roller that is rotated by two motors to apply the adhered glue to the continuous sheet of paper and is movable in directions approaching and away from the supply roller; a film thickness adjustment mechanism that adjusts a gap between the coating roller and the outer circumferential surface of the coating roller to uniformly adjust the film thickness of the glue adhering to the second coating roller; A gap adjustment means for adjusting the gap by moving an application roller toward and away from the supply roller, and an adjustment amount grasping means for numerically grasping the amount of adjustment of the gap adjusted by the gap adjustment means. ,
The conveyance speed detection means is configured to be located downstream of the first coating device in the continuous paper conveyance direction and upstream of the winding section in the continuous paper conveyance direction in at least one of the conveyance paths in which the first coating device is provided. a speed detection roller on which the continuous paper is wound and rotates as the continuous paper is conveyed; and a rotation amount detection means for detecting a rotation amount of the speed detection roller and inputting the rotation amount to the control section;
The control unit is configured to calculate the conveyance speed of the continuous paper from the rotation amount per unit time of the speed detection roller detected by the rotation amount detection means, and adjusts the coating liquid according to the conveyance speed of the continuous paper. The rotational speed of the first motor and the rotational speed of the second motor at which the coating amount is appropriate are respectively set, and the first motor is controlled to apply the coating liquid in accordance with the conveyance speed of the continuous paper detected by the conveyance speed detection means. The second motor was set to provide an appropriate amount of coating liquid in accordance with the conveyance speed of the continuous paper detected by the conveyance speed detection means. This paper tube manufacturing apparatus is characterized by being configured to rotate at a rotational speed.

According to the paper tube manufacturing apparatus of the present invention, even if the conveyance speed of the continuous paper changes, the amount of coating liquid applied to the continuous paper can be maintained at an appropriate amount.

1 is an overall front view showing an embodiment of a paper tube manufacturing apparatus of the present invention. FIG. 2 is an enlarged front view of the application section shown in FIG. 1. FIG. FIG. 3 is an enlarged front view of the first coating device shown in FIG. 2. FIG. 4 is a plan view of the first coating device shown in FIG. 3. FIG. 4 is a sectional view taken along line XX of the first coating device shown in FIG. 3. FIG. 3 is an enlarged front view of the second coating device shown in FIG. 2. FIG. 7 is a YY sectional view of the second coating device shown in FIG. 6. FIG. FIG. 7 is an enlarged view of the vicinity of the attachment notch of the second coating device shown in FIG. 6; 9 is a ZZ sectional view of the second coating device shown in FIG. 8. FIG. 4 is an enlarged front view of the third coating device shown in FIG. 3. FIG. 7 is a graph showing the relationship between the conveyance speed of continuous paper and the rotational speed of the first motor. 7 is a graph showing the relationship between the conveyance speed of continuous paper and the rotational speed of the second motor. It is a front view which shows 2nd Embodiment of an application part. It is a front view which shows 3rd Embodiment of an application part.

The overall configuration of the paper tube manufacturing apparatus of the present invention will be explained based on FIG. 1. FIG. 1 is an overall front view showing an embodiment of the paper tube manufacturing apparatus of the present invention.
As shown in FIG. 1, the paper tube manufacturing apparatus 1 of the present invention includes a paper supply section 2 that supplies continuous paper 10, and an application section 3 that applies a coating liquid to the continuous paper 10 supplied from the paper supply section 2. , a winding section 4 that winds the continuous paper 10 coated with a coating liquid around a mandrel 4a to form a continuous paper tube, and a cutting section 5 that cuts the continuous paper tube into a predetermined length to form a paper tube. , a discharge section 6 for discharging the paper tube, and a control section 7.
The continuous paper 10 has a narrow and long tape shape.
The paper tube manufacturing apparatus 1 in the embodiment is an apparatus that manufactures paper straws as paper tubes.
Next, each part will be explained.

The paper supply section 2 includes a reel stand 20 and a plurality of shafts 21 rotatably attached to the reel stand 20. A reel 22 on which the continuous paper 10 is wound is attached to the shaft 21 . The continuous paper 10 is drawn out from the reel 22 and supplied to the winding section 4 via the coating section 3. The continuous paper 10 is conveyed from the paper supply section 2 (reel 22) to the winding section 4.
The paper supply section 2 may have a mechanism that applies a rotational brake to the shaft 21. By doing this, rotational resistance is applied to the reel 22, and by suppressing the withdrawal of the continuous paper 10, tension is applied to the continuous paper 10, and the continuous paper 10 is rotated between the reel 22 and the application section 3. It can prevent excessive sagging.

In this embodiment, five shafts 21 are attached to the reel stand 20, and five reels 22 are attached so that five rows of continuous paper 10 can be fed to the winding section 4 through separate conveyance paths. There is.
In FIG. 1, three rows of continuous paper 10 are fed from three reels 22 to the winding section 4, but the invention is not limited to this, and two rows of continuous paper 10 are fed from two reels 22 to the winding section. It is also possible to supply up to 4. In other words, the paper supply section 2 supplies multiple rows of continuous paper 10 to the winding section 4 through separate transport paths.
Note that the number of shafts 21 attached to the reel stand 20 is not limited to five, and any number of shafts 21 can be attached.

The coating section 3 includes a frame 30, a first coating device 100 attached to the frame 30, a second coating device 200, and a third coating device 300.
The first, second, and third coating devices 100 , 200 , and 300 each apply a coating liquid to one of three rows of continuous paper 10 supplied from the paper supply section 2 .
The winding section 4, cutting section 5, discharge section 6, and control section 7 are each attached to a mounting frame 11. The control unit 7 is not limited to the mounting frame 11, and can be mounted at any location.
The winding section 4 has a mandrel 4a and a winding belt (not shown). The mandrel 4a is horizontally supported with a cantilever at its upstream end in the continuous paper conveyance direction. The winding belt is an endless flat belt, which is wound once diagonally across the mandrel 4a, and is wound around two drum rollers (not shown) in a loop shape, and at least one of the drum rollers is wound around the mandrel 4a (not shown). The winding belt is driven by being rotated by an attached motor.

The leading ends of the three rows of continuous sheets 10 coated with the coating liquid are fed diagonally between the circumferential surface of the mandrel 4a and the winding belt with a phase shift in the axial direction of the mandrel 4a, thereby driving the winding belt. Thus, the continuous paper 10 is spirally wound around the circumferential surface of the mandrel 4a and conveyed toward the cutting section 5 to form a continuous paper tube.
The cutting section 5 includes a rotary blade 5a, and cuts the continuous paper tube formed by the winding section 4 into a predetermined length with the rotary blade 5a to produce a paper tube, for example, a paper straw.
The discharge section 6 has a chute 6a, and the paper tubes cut by the cutting section 5 detach from the mandrel 4a, fall sequentially along the chute 6a, and are discharged to the outside of the mounting frame 11.

The details of the applicator 3 will be explained based on FIG. 2. FIG. 2 is an enlarged front view of the application section shown in FIG. 1.
As shown in FIG. 2, in the frame 30, a front side plate 31 and a back side plate 32 are connected with a gap between them by a connecting member (not shown).
The first, second, and third coating devices 100, 200, and 300 are respectively installed between the front side plate 31 and the back side plate 32 with their positions shifted in the vertical direction and the continuous paper conveyance direction.
The first coating device 100 is located at the top, the second coating device 200 is located at the bottom, and the third coating device 300 is located midway between the top and bottom, and downstream from the first coating device 100 in the continuous paper conveyance direction. positioned.

The first coating device 100 uses a first coating roller 101 to coat one side of a row of first continuous sheets 10-1 with a coating liquid. The coating liquid is a slip agent.
The second coating device 200 uses a second coating roller 201 to coat one side of a row of second continuous paper 10-2 with a coating liquid. The coating liquid is a glue or coating.
The third coating device 300 applies a coating liquid to both sides of one row of third continuous paper 10-3 by passing the coating liquid through the coating liquid container 301. The coating liquid is a glue.
After the first, second, and third continuous sheets 10-1, 10-2, and 10-3 are coated with the coating liquid, they are supplied to the mandrel 4a in the following manner. The first continuous paper 10-1 is supplied so that the coated surface coated with the coating liquid (slip agent) contacts the circumferential surface of the mandrel 4a, and then the third continuous paper 10-3 is supplied to one side of the mandrel 4a. If the coated surface of the first continuous paper 10-1 is adhered to the non-coated surface opposite to the coated surface of the first continuous paper 10-1, and then the coating liquid of the second coating device 200 is glue, the second continuous paper 10 -2 is supplied so that its coated surface is adhered to the other coated surface of the third continuous paper 10-3. Further, when the coating liquid of the second coating device 200 is a coating agent, the second continuous paper 10-2 is arranged such that its non-coated surface is adhered to the other coated surface of the third continuous paper 10-3. Supplied.

Therefore, by attaching the three coating devices 100, 200, and 300 to the frame 30, it is possible to apply the coating liquid to the three rows of continuous paper 10, respectively. The applicator 3 can be made more compact by shifting its position in the transport direction.
Moreover, since a slip agent is applied to the surface of the first continuous paper 10-1 that contacts the circumferential surface of the mandrel 4a, the manufactured paper tube can smoothly rotate and move along the circumferential surface of the mandrel 4a. I can do it.
Furthermore, since the coating liquid was applied to both sides of the third continuous paper 10-3, the first continuous paper 10-1 and the third continuous paper 10-3 are glued together, and the third continuous paper 10-3 and Since the second continuous paper 10-2 is bonded, a strong paper tube can be manufactured by bonding the three rows of continuous paper 10-1, 10-2, and 10-3.
Note that the configuration of the applicator 3 is not limited to this configuration, and can be configured as described later.

The first coating device 100 will be specifically explained based on FIGS. 3 to 5. 3 is an enlarged front view of the first coating device shown in FIG. 2, FIG. 4 is a plan view of the first coating device shown in FIG. 3, and FIG. 5 is a sectional view taken along line XX of the first coating device shown in FIG. be.
As shown in FIG. 3, the first coating device 100 includes the first coating roller 101 described above, a coating liquid container 102, a blade 103, a first sheet removal mechanism 104, a first motor 105, and the like. are doing.
As shown in FIG. 5, the first application roller 101 has a support shaft 101a. Both axial ends of the support shaft 101a are rotatably supported by a ring-shaped first application roller support member 106 by bearings 106a. Each of the first application roller support members 106 is fitted into a mounting notch 33 opened in the upper end surface of the front side plate 31 and rear side plate 32 of the frame 30, respectively. The mounting notches 33 of the front side plate 31 and the rear side plate 32 are closed by a cross member 34 attached to the upper end surface, and a holding bolt 35 is screwed into a screw hole 34a of the cross member 34. The tip of the holding bolt 35 faces the first application roller support member 106 .

By screwing in the holding bolt 35, the first coating roller support member 106 is pressed against the bottom surface of the mounting notch 33, and by holding the first coating roller support member 106 so as not to rotate, both axial ends of the support shaft 101a are fixed. is rotatably supported by the front side plate 31 and the rear side plate 32, and the first application roller 101 is rotatably attached to the frame 30.
One axial end of the support shaft 101a protrudes outward from the back side plate 32, and a driven gear 107 is attached thereto.
As shown in FIG. 4, the first motor 105 is attached to the back side plate 32 via a spacing member 36. A drive gear 108 is attached to the rotating shaft 105a of the first motor 105, and the drive gear 108 and the driven gear 107 mesh with each other. The rotation speed of the first motor 105 can be changed. Note that illustration of the coating liquid container 102 is omitted in FIG.
Therefore, by driving the first motor 105, the first application roller 101 is rotated.

The coating liquid container 102 is a container for storing a coating liquid, and is a thick container with an open top surface, a rectangular planar shape, and a thickness.
The coating liquid container 102 is attached to the frame 30 by an attachment mechanism 110 so that the lower part of the outer peripheral surface of the first coating roller 101 is partially immersed in the coating liquid in the coating liquid container 102. As the first application roller 101 rotates, the application liquid in the application liquid container 102 adheres to the outer peripheral surface of the first application roller 101 .
The mounting mechanism 110 includes a first shaft 111 and a second shaft 112 that are rotatably mounted across the front side plate 31 and the back side plate 32, and a pair of first links that are spaced apart from each other in the axial direction of the first shaft 111. 113, a pair of second links 114 attached at intervals in the axial direction of the second shaft 112, and a container receiver 115. It is rotatably mounted around a fourth shaft 117. The first, second, third, and fourth axes 111, 112, 116, and 117 are located at each vertex of the parallelogram, and the mounting mechanism 110 constitutes a parallel crank mechanism. A coating liquid container 102 is provided in a container receiver 115 .

One end in the axial direction of the first shaft 111 and the second shaft 112 protrudes outward from the back side plate 32, and a pulley 118 is attached to each end. A belt 119 is wound between each pulley 118, and the first shaft 111 and the second shaft 112 rotate in synchronization in the same direction.
The other axial end of the second shaft 112 protrudes outward from the front side plate 31, and a lever 120 is attached thereto. A lock pin 121 is provided on the lever 120, and by fitting the lock pin 121 into the first lock hole 37-1 of the front side plate 31, the lever 120 can be held in an upward position.
When the lever 120 is in the upward position, the coating liquid container 102 is in the upper position shown in the figure, and a lower portion of the outer peripheral surface of the first coating roller 101 is partially immersed in the coating liquid in the coating liquid container 102.

When the lock pin 121 is pulled out from the first lock hole 37-1 and the lever 120 is rotated in the direction shown by the arrow in FIG. 3 to rotate the second shaft 112 counterclockwise in FIG. 113 and 114 are rotated counterclockwise, and the coating liquid container 102 is translated downward together with the container receiver 115. When the lock pin 121 is fitted into the second lock hole 37-2 of the front side plate 31 and the lever 120 is placed in a horizontal position, the coating liquid container 102 is held in the lower position shown by the two-dot chain line in FIG.
When the coating liquid container 102 is in the lower position, the first coating roller 101 and the first coating liquid container 102 are separated from each other. The cleaning work of the application roller 101 becomes easier.
Moreover, since the coating liquid container 102 moves in parallel, the coating liquid does not spill when moving between the upper position and the lower position.

As shown in FIG. 4, the blade 103 is attached to the frame 30 with an attachment member 122. The blade 103 is located at the most downstream position in the rotational direction of the first coating roller 101 among the portions of the first coating roller 101 that are immersed in the coating liquid in the coating liquid container 102, the outer peripheral surface of the first coating roller 101, and the continuous paper 10. (first continuous paper 10-1), parallel to the outer circumferential surface of the first coating roller 101, and adjusted so that it is close to or in contact with the outer circumferential surface of the first coating roller 101. It scrapes off excess coating liquid from the coating liquid adhering to the circumferential surface of the first coating roller 101 .
The attachment member 122 includes a horizontal shaft 123 attached across the front side plate 31 and the back side plate 32, a pair of arms 124 attached to the horizontal axis 123, and a pair of plates 125 attached to each arm 124, respectively. It has an attachment cross member 126 attached between a pair of plates 125, and the blade 103 is attached to the attachment cross member 126. The arm 124 is attached so that the blade 103 can approach and separate from the first application roller 101.

The continuous paper 10 (first continuous paper 10-1) is provided with a conveyance path in a direction perpendicular to the axial direction of the first coating roller 101, and a portion of the continuous paper 10 is provided on a part of the outer peripheral surface of the first coating roller 101. By conveying one side of the continuous paper 10 in contact with the other, the coating liquid adhering to the outer peripheral surface of the first application roller 101 is applied to the contacting surface of the continuous paper 10 .
When the conveyance speed of the continuous paper 10 is constant, increasing the rotation speed of the first coating roller 101 increases the amount of coating liquid applied from the first coating roller 101 to the continuous paper 10.
Adjustment of the rotational speed of the first application roller 101 will be described in detail later.

The first sheet detachment mechanism 104 includes a detachment bar 130, a movable body 140 to which the detachment bar 130 is attached, an air cylinder 150 for moving the movable body 140, and the like.
The movable body 140 is a pair of L-shaped plates 141 connected by a connecting member 142, and a detachment bar 130 is attached between the pair of plates 141. The separation bar 130 is an elongated member with a circular cross section extending in a direction perpendicular to the continuous paper conveyance direction.
The air cylinder 150 is a generally known cylinder with a guide, and includes a main body 151, a piston rod 152, guide rods 153 arranged on both sides of the main body 151, and one end of the piston rod 152 and the guide rod 153. It has a connecting plate 154. A main body 151 is attached to a stay 38 provided between a front side plate 31 and a rear side plate 32 of the frame 30, and a piston rod 152 and a guide rod 153 are engaged with a connecting member 142 of a movable body 140 via a plate 154. It has been done.

The piston rod 152 of the air cylinder 150 is expanded and contracted by compressed air whose supply is controlled by the control unit 7. When the piston rod 152 is extended, the detachment bar 130 is raised toward the upper limit position, and when the piston rod 152 is contracted, it is lowered toward the lower limit position. The guide rod 153 slides as the piston rod 152 expands and contracts, and prevents the movable body 140 from rotating, and improves resistance to bending moments on the piston rod 152 and straightness.

When the separation bar 130 is at the upper limit position, as shown by the two-dot chain line in FIG. The continuous paper 10 is pushed up above the conveyance path of the continuous paper 10 between the guide roller 160 that comes into contact with the first application roller 101 immediately before the continuous paper 10 contacts the first application roller 101, and the continuous paper 10 is It is in a state where it does not come into contact with the outer peripheral surface.
When the separation bar 130 is at the lower limit position, the continuous paper 10 is transported on the transport path between the first application roller 101 and the guide roller 160, and the continuous paper 10 comes into contact with the outer peripheral surface of the first application roller 101. transported in the same condition.
That is, the separation bar 130 is located at the lower limit position while the paper tube manufacturing apparatus 1 is in operation, and is located at the upper limit position when the paper tube manufacturing apparatus 1 is stopped.

This can prevent the continuous paper 10 from breaking due to continued contact with the first application roller 101 while the paper tube manufacturing apparatus 1 is stopped.
In addition, when the paper tube manufacturing device 1 is preparing to operate, changing a job, or stopping the paper tube manufacturing device 1 in operation, the release bar 130 may be moved to the upper limit position while the conveyance of the continuous paper 10 is stopped. By positioning the continuous paper 10 in such a manner that it does not come into contact with the outer peripheral surface of the first coating roller 101, the first coating roller 101 is rotated idly. Thereby, the coating liquid in the coating liquid container 102 can be stirred, and the coating liquid attached to the outer peripheral surface of the first coating roller 101 can be prevented from drying.

Details of the second coating device 200 will be explained based on FIGS. 6 to 9. 6 is an enlarged front view of the second coating device 200 shown in FIG. 2, FIG. 7 is a YY sectional view of the second coating device shown in FIG. 6, and FIG. 8 is a cross-sectional view of the second coating device 200 shown in FIG. FIG. 9 is an enlarged view of the vicinity of the mounting notch, and FIG. 9 is a ZZ sectional view of the second coating device shown in FIG.
The second coating device 200 includes the aforementioned second coating roller 201, supply roller 202, coating liquid container 203, second sheet removal mechanism 210, film thickness adjustment mechanism 220, and the like.
The second application roller 201 is located at the top, the supply roller 202 is located at the bottom, and the outer peripheral surfaces of both rollers 201 and 202 are in contact with each other.

The second application roller 201 has a support shaft 201a. Both ends of the support shaft 201a in the axial direction are rotatably supported by the second application roller support member 204 by bearings 204a.
The supply roller 202 has a support shaft 202a. Both axial ends of the support shaft 202a are rotatably supported by the supply roller support member 205 with bearings 205a.
The second application roller support member 204 and the supply roller support member 205 are inserted into mounting notches 40 opened in the opening windows 39 (see FIG. 2) of the front side plate 31 and rear side plate 32 of the frame 30 from above to below. It has a structure that allows you to slide it into place. The supply roller support member 205 is fixed so as to come into contact with the bottom surface of the attachment notch 40 during use. The supply roller support member 205 is located at the bottom, and the second application roller support member 204 is located at the top.

The second application roller support member 204 and the supply roller support member 205 have a rectangular shape, and grooves 204b and 205b that are continuous in the vertical direction are formed on both side surfaces, respectively, and the widths of the grooves 204b and 205b are equal to the width of the mounting notch. The dimensions are approximately the same as the thickness of the opening edge of the portion 40, that is, the thickness of the front side plate 31 and the back side plate 32.
The supply roller support member 205 is inserted into the mounting notch 40 such that the groove 205b fits between the opposing opening surfaces 40a and 40b of the mounting notch 40. The distance between the one opening surface 40a and the other opening surface 40b is slightly longer than the distance between the grooves 205b of the supply roller support member 205. The reference surfaces when inserting the supply roller support member 205 are the bottom surface of the attachment notch 40 and one opening surface 40a.
Therefore, the supply roller support member 205 is brought into contact with the bottom surface of the mounting notch 40, and the ball plunger 205c provided on the inner surface of the front side plate 31 and the inner surface of the back side plate 32 is used to attach the supply roller support member 205 to the mounting cutout. The supply roller support member 205 is fixed at an accurate position by pushing the notch 40 from the other opening surface 40b side to the one opening surface 40a side and bringing it into contact with one opening surface 40a.
Accordingly, the supply roller 202 is rotatably mounted to the frame 30 in a fixed position.

The second application roller support member 204 is inserted into the mounting notch 40 such that the groove 204b fits between the opposing opening surfaces 40a and 40b of the mounting notch 40. The distance between the one opening surface 40a and the other opening surface 40b is slightly longer than the distance between the grooves 204b of the second application roller support member 204. The reference surface when inserting the second application roller support member 204 is one opening surface 40a of the attachment notch 40.
Therefore, the second application roller support member 204 is inserted into the mounting notch 40, and the second application roller support member 204 is mounted using the ball plunger 204c provided on the inner surface of the front side plate 31 and the inner surface of the back side plate 32. By pushing the notch portion 40 from the other opening surface 40b side to the one opening surface 40a side and bringing it into contact with one opening surface 40a, the position of the second application roller support member 204 in the left-right direction, that is, the mounting notch The position of the portion 40 in the direction perpendicular to one opening surface 40a is fixed at an accurate position. Note that the vertical position of the second application roller support member 204 is adjusted by a method described later.
Therefore, the second application roller 201 is rotatably attached to the frame 30 at a predetermined position.

The coating liquid container 203 is a container for storing a coating liquid, and is a thick container with an open top surface, a rectangular planar shape, and a thickness.
The coating liquid container 203 is attached to the frame 30 by an attachment mechanism 250.
The attachment mechanism 250 has a similar configuration to the attachment mechanism 110 of the first coating device 100. In other words, a first shaft 251 and a second shaft 252 are rotatably attached across the front side plate 31 and the back side plate 32, and a pair of first links 253 are attached at intervals in the axial direction of the first shaft 251. A pair of second links 254 and a container receiver 255 are installed at intervals in the axial direction of the second shaft 252, and the container receiver 255 has a third shaft 256 and a fourth shaft connected to the first link 253 and second link 254 257 and is rotatably mounted. The first, second, third, and fourth axes 251, 252, 256, and 257 are located at each vertex of the parallelogram, and the mounting mechanism 250 constitutes a parallel crank mechanism. A coating liquid container 203 is provided in the container receiver 255 .

One end in the axial direction of the first shaft 251 and the second shaft 252 protrudes outward from the back side plate 32, and a pulley 258 is attached to each end. A belt 259 is wound between each pulley 258, and the first shaft 251 and the second shaft 252 rotate in synchronization in the same direction.
The other axial end of the second shaft 252 protrudes outward from the front side plate 31, and a lever 260 is attached thereto. A lock pin 261 is provided on the lever 260, and by fitting the lock pin 261 into the first lock hole 41-1 of the front side plate 31, the lever 260 can be held in an upward position.
When the lever 260 is in the upward position, the coating liquid container 203 is in the upper position shown in the figure, and a lower portion of the outer peripheral surface of the supply roller 202 is partially immersed in the coating liquid in the coating liquid container 203.

When the lock pin 261 is pulled out from the first lock hole 41-1 and the lever 260 is rotated in the direction shown by the arrow in FIG. 6 to rotate the second shaft 252 counterclockwise in FIG. 253 and 254 are rotated counterclockwise, and the coating liquid container 203 is translated downward together with the container receiver 255. When the lock pin 261 is fitted into the second lock hole 41-2 of the front side plate 31 and the lever 260 is placed in a horizontal position, the coating liquid container 203 is held in the downward position.
When the coating liquid container 203 is in the lower position, the supply roller 202 and the coating liquid container 203 are separated from each other, so it is difficult to replenish the coating liquid in the coating liquid container 203 or to remove the coating liquid container 203 and the supply roller 202 when replacing the coating liquid. Cleaning work becomes easier.
Moreover, since the coating liquid container 203 moves in parallel, the coating liquid does not spill when moving between the upper position and the lower position.

The supply roller 202 is rotatably provided so that a lower portion of its outer peripheral surface is partially immersed in the coating liquid in the coating liquid container 203, and is rotated by a second motor 206 whose rotation speed can be changed.
The second motor 206 is attached to the rear side plate 32 via a spacing member 42 .
A drive gear 207 is attached to the rotating shaft 206a of the second motor 206.
One axial end of the support shaft 201a of the second application roller 201 protrudes outward from the back side plate 32, and a first driven gear 208 is attached thereto.
One axial end of the support shaft 202a of the supply roller 202 protrudes outward from the back side plate 32, and a second driven gear 209 is attached thereto.
The first driven gear 208 and the second driven gear 209 mesh with each other, and the second driven gear 209 and the drive gear 207 mesh with each other. The rotational speed of the second motor 206 can be changed.

Therefore, by driving the second motor 206, the second application roller 201 and the supply roller 202 are rotated in opposite directions in synchronization.
As the supply roller 202 rotates, the coating liquid in the coating liquid container 203 adheres to the outer peripheral surface of the supply roller 202 .
As the second application roller 201 rotates, the application liquid adhering to the outer peripheral surface of the supply roller 202 is supplied to the outer peripheral surface of the second application roller 201.

The film thickness of the coating liquid supplied to the outer peripheral surface of the second application roller 201 is adjusted by adjusting the gap between the outer peripheral surface of the supply roller 202 and the outer peripheral surface of the second application roller 201 using the film thickness adjustment mechanism 220. can do. In other words, the second application roller 201 is parallel to the supply roller 202 and retains at least part of the application liquid attached to the outer peripheral surface of the supply roller 202 on the outer peripheral surface of the second application roller 201. They are arranged so that they can be adjusted to be in close proximity or contact.
Adjustment of the film thickness will be described in detail later.

The continuous paper 10 (second continuous paper 10-2) is conveyed while one side is in contact with a part of the outer circumferential surface of the second coating roller 201, and the coating liquid supplied to the outer circumferential surface of the second coating roller 201 is conveyed. It is applied to the contacting surface of the continuous paper 10.
When the conveyance speed of the continuous paper 10 is constant and the distance between the outer peripheral surface of the second application roller 201 and the outer peripheral surface of the supply roller 202 is constant, the faster the rotation speed of the supply roller 202, the faster the second application roller The rotational speed of the roller 201 also increases, and the amount of coating liquid applied from the second coating roller 201 to the continuous paper 10 increases. Adjustment of the rotation speeds of the second application roller 201 and the supply roller 202 will be described in detail later.

The second sheet detachment mechanism 210 includes an air cylinder 211, a detachment bar 212, a movable body 213 to which the detachment bar 212 is attached, and the like.
The air cylinder 211 is a generally known cylinder with a guide, and includes a main body 214, a piston rod 215, guide rods 216 arranged on both sides of the main body 214, and one end of the piston rod 215 and the guide rod 216. It has a connecting plate 217.
A bracket 44 is attached to the outer surface of the front side plate 31 of the frame 30 across the attachment notch 40, and the air cylinder 211 is attached to the frame 30 by fixing the main body 214 to the bracket 44.
The movable body 213 is in the shape of a horizontally long square bar, and is attached to the plate 217. A pair of release bars 212 are attached to both ends of the movable body 213 in the longitudinal direction. The separation bar 212 is an elongated member with a circular cross section extending in a direction perpendicular to the continuous paper conveyance direction.
Elongated holes 43 that are long in the vertical direction are formed on both sides of the mounting notch 40 of the front side plate 31, and a pair of release bars 212 protrude from the elongated holes 43 into the frame 30, respectively.

The piston rod 215 of the air cylinder 211 expands and contracts with compressed air whose supply is controlled by the control unit 7. When the piston rod 215 extends, the withdrawal bar 212 rises toward the upper limit position, and when the piston rod 215 contracts, the withdrawal bar 212 descends toward the lower limit position. The guide rod 216 slides as the piston rod 215 expands and contracts, and prevents the movable body 213 from rotating, and improves resistance to bending moments on the piston rod 215 and straightness.
In addition, in the embodiment, since the two breakaway bars 212 are located at positions where they interfere with the frame 30 (outside the frame 30), in order to prevent interference between the breakaway bars 212 and the frame 30, the frame 30 (front side plate 31) is Although a pair of elongated holes 43 are formed, if there is no interference with the frame 30 in the vertical movement range of the two or one of the detachment bars 212, the elongated holes etc. are not necessary.

When the two separation bars 212 are at the upper limit position, the upstream guide roller 218 (see FIG. 2) and the downstream guide roller 219 (see FIG. 2), which is located downstream of the second coating roller 201 in the continuous paper conveyance direction and contacts the second coating roller 201 immediately after contacting the second coating roller 201. The continuous paper 10 is pushed up from the conveyance path along which the continuous paper 10 is conveyed while being in contact with the second application roller 201, and the continuous paper 10 is brought into a state in which it does not contact the outer peripheral surface of the second application roller 201.
When the two separation bars 212 are at the lower limit position, the continuous paper 10 is transported on the transport path between the upstream guide roller 218 and the downstream guide roller 219, and the continuous paper 10 is transferred to the second application roller 201. The material is transported in contact with the outer peripheral surface of the material.

That is, the two separation bars 212 are located at the lower limit position while the paper tube manufacturing apparatus 1 is in operation, and are located at the upper limit position while the paper tube manufacturing apparatus 1 is stopped.
This can prevent the continuous paper 10 from being damaged due to continued contact with the second application roller 201 while the paper tube manufacturing apparatus 1 is stopped.
In addition, when the paper tube manufacturing device 1 is preparing for operation, changing a job, or stopping the paper tube manufacturing device 1 in operation, the two separation bars 212 may be removed while the conveyance of the continuous paper 10 is stopped. The supply roller 202 and the second coating roller 201 are rotated at idle while the continuous paper 10 is placed at the upper limit position so that it does not come into contact with the second coating roller 201 . Thereby, the coating liquid in the coating liquid container 203 can be stirred, and the coating liquid attached to the outer peripheral surfaces of the supply roller 202 and the second coating roller 201 can be prevented from drying.

Note that the blade (not shown) is located at the most downstream position in the rotational direction of the supply roller 202 among the parts of the supply roller 202 that are immersed in the coating liquid in the coating liquid container 203, and between the outer peripheral surface of the supply roller 202 and the second coating roller 201. Provided so as to be able to contact between the outer peripheral surface and the closest position, and used to scrape off the coating liquid adhering to the outer peripheral surface of the supply roller 202 when cleaning the supply roller 202 and the second application roller 201. I can do it.

The film thickness adjustment mechanism 220 adjusts the gap between the outer peripheral surface of the second application roller 201 and the outer peripheral surface of the supply roller 202 to adjust the film thickness of the coating liquid that adheres to the outer peripheral surface of the second application roller 201. It is something. The film thickness adjustment mechanism 220 is provided at both axial ends of the support shaft 201a.
One film thickness adjustment mechanism 220 includes the aforementioned one supply roller support member 205 that rotatably supports the supply roller 202 on the frame 30, and the second application roller 201 that rotatably supports the frame 30. It is provided with the one second application roller support member 204 mentioned above, two springs 221, two pressure screws 222, one adjustment screw 223, and a dial gauge 224 as adjustment amount grasping means.
As described above, the supply roller support member 205 is attached to the frame 30 by being inserted into the mounting notches 40 of the front side plate 31 and the back side plate 32.
The supply roller support member 205 has a spring receiver for receiving the spring 221, for example, two spring receiver holes 225 that are open on the upper surface.

As described above, the second application roller support member 204 is attached to the frame 30 by being inserted into the mounting notches 40 of the front side plate 31 and the back side plate 32.
The second application roller support member 204 has two spring mounting holes 226 through which the springs 221 are passed. The spring attachment hole 226 is provided at a position corresponding to the spring receiving hole 225 of the supply roller support member 205, and penetrates through the upper and lower surfaces of the second application roller support member 204.
The spring 221 is passed through the spring mounting hole 226, and a pressure screw 222 that presses the spring 221 from above is screwed into the upper part of the spring mounting hole 226, and the pressure screw 222 is a locking screw. 227 and is fixed so as not to rotate.
Furthermore, a plate material 228 is fixed between the two spring attachment holes 226 on the upper surface of the second application roller support member 204, and a projecting member 229 is integrally provided on the side surface of the plate material 228.

The spring 221 is a compression coil spring, and is inserted into the spring mounting hole 226. The lower part of the spring 221 is inserted into the spring receiving hole 225, the lower end is locked to the bottom surface of the spring receiving hole 225, the upper end is pressed by contacting the tip (lower end) of the pressing screw 222, and the spring 221 is inserted into the spring receiving hole 225. It is provided in a compressed state between the two application roller support members 204 and the supply roller support members 205.
Therefore, the second application roller support member 204 and the supply roller support member 205 are urged in the direction of being separated by the restoring force of the spring 221.

A plate 230 is attached to the upper surface of the front side plate 31 and the upper surface of the rear side plate 32 of the frame 30, spanning the attachment notch 40, and the plate 230 closes the upper part of the attachment notch 40.
The plate 230 has screw holes 231 formed therein, which pass through the upper and lower surfaces. A mounting member 232 is provided on the top surface of the plate 230, and a mounting piece 233 is provided on the back surface of the plate 230.
The adjusting screw 223 is screwed into a screw hole 231 of the plate 230, and the tip of the adjusting screw 223 is provided so as to come into contact with a plate 228 attached to the second application roller support member 204. There is. An index handle 240 is attached to the mounting member 232, and the adjustment screw 223 is rotated by this index handle 240. A dial gauge 224 is attached to the mounting piece 233, and a probe 224a of the dial gauge 224 is in contact with the projecting member 229.

When the adjustment screw 223 is rotated in the tightening direction (downward movement direction), the second application roller support member 204 is pushed down while compressing the spring 221, and the second application roller 201 approaches the supply roller 202. The gap between the outer peripheral surface of the second application roller 201 and the outer peripheral surface of the supply roller 202 becomes narrower. The second application roller support member 204 is pushed up so that the close state is maintained by the restoring force of the spring 221.
When the adjustment screw 223 is rotated in the loosening direction (upward movement direction), the second application roller support member 204 is pushed up by the restoring force of the spring 221, and the second application roller 201 and the supply roller 202 are separated. , the gap between the outer peripheral surface of the second application roller 201 and the outer peripheral surface of the supply roller 202 becomes wider.

Therefore, by rotating the adjusting screw 223, the gap between the outer circumferential surface of the second application roller 201 and the outer circumferential surface of the supply roller 202 can be adjusted.
In the embodiment, the reason why the supply roller support member 205 is inserted into the mounting notch 40 is to make it easier to attach the supply roller 202 to the frame 30, and not to adjust the gap. , the supply roller support member 205 can also be integrated with the frame 30. In other words, the second application roller support member 204, the spring 221, the adjusting screw 223, etc. constitute a gap adjustment means for adjusting the gap between the outer peripheral surface of the second application roller 201 and the outer peripheral surface of the supply roller 202. are doing.

Note that the second application roller support members 204 are provided at both ends of the support shaft 201a in the axial direction, and the supply roller support members 205 are provided at both ends of the support shaft 202a in the axial direction. The gap between the supply roller 202 and the outer peripheral surface of the supply roller 202 can be adjusted at both axial ends of the respective support shafts 201a and 202a. Therefore, the second application roller 201 can be made horizontal and parallel to the supply roller 202, and the gap between the outer peripheral surface of the second application roller 201 and the outer peripheral surface of the supply roller 202 becomes uniform in the axial direction. The film thickness of the coating liquid adhering to the outer peripheral surface of the second coating roller 201 becomes uniform, and the amount of the coating liquid applied from the second coating roller 201 to the continuous paper 10 can be made uniform.

Since the adjustment screw 223 is rotated by the index handle 240, the amount by which the adjustment screw 223 is rotated can be read numerically, so that the amount of rotation of the adjustment screw 223 can be accurately grasped.
When the second application roller support member 204 moves in the vertical direction, the measured value of the dial gauge 224 changes, so the amount of movement of the second application roller support member 204 can be read numerically. The adjustment amount of the gap between the outer peripheral surface of the supply roller 202 and the outer peripheral surface of the supply roller 202 can be known, and the dial gauge 224 is an adjustment amount grasping means for numerically grasping the adjustment amount of the gap.
Further, by providing the index handle 240 and the dial gauge 224, the gap between the outer peripheral surface of the second application roller 201 and the outer peripheral surface of the supply roller 202 can be adjusted with reproducibility, and the application of the application liquid can be performed with high reproducibility. The amount can be adjusted repeatedly, accurately and uniformly.

When the conveyance speed of the continuous paper 10 is constant, widening the gap between the outer circumferential surface of the second coating roller 201 and the outer circumferential surface of the supply roller 202 reduces the film of coating liquid that adheres to the outer circumferential surface of the second coating roller 201. As the thickness increases, the amount of coating liquid applied from the second coating roller 201 to the continuous paper 10 increases.
Furthermore, if the gap between the outer circumferential surface of the second coating roller 201 and the outer circumferential surface of the supply roller 202 is narrowed, the film thickness of the coating liquid that adheres to the outer circumferential surface of the second coating roller 201 becomes thinner, and the second coating roller From 201 onwards, the amount of coating liquid applied to the continuous paper 10 decreases.

The third coating device 300 will be explained in detail based on FIG. 10. FIG. 10 is an enlarged front view of the third coating device shown in FIG. 2.
The third coating device 300 includes the coating liquid container 301 described above, an upper blade 302, a lower blade 303, a third sheet removal mechanism 310, and the like.
The coating liquid container 301 is a container for storing a coating liquid, and is a thick container with an open top surface, a rectangular planar shape, and a thickness. A container receiver 305 is attached across the front side plate 31 and rear side plate 32 of the frame 30, and the coating liquid container 301 is provided in this container receiver 305.

The third sheet detachment mechanism 310 includes an air cylinder 311, a bracket 312, a detachment roller 313, and a dipping roller 314.
The air cylinder 311 is attached to a plate member 315 that is attached to the front side plate 31 and the back side plate 32 of the frame 30, and a piston rod 316 is connected to a bracket 312.
The detachment roller 313 and the dipping roller 314 are attached to the bracket 312, and rotate when the continuous paper 10 (third continuous paper 10-3) is conveyed in contact with them.
The piston rod 316 of the air cylinder 311 is expanded and contracted by compressed air whose supply is controlled by the control unit 7, and the detachment roller 313 and the dipping roller 314 are moved up and down between the upper limit position and the lower limit position. There is.

When the detachment roller 313 and the dipping roller 314 are at the lower limit position, the dipping roller 314 is immersed together with the continuous paper 10 in the coating liquid in the coating liquid container 301 with the continuous paper 10 in contact with the outer peripheral surface, The coating liquid adheres to both sides of the continuous paper 10.
When the detachment roller 313 and the dipping roller 314 are at the upper limit position, the continuous paper 10 is lifted from the conveyance path in the coating liquid container 301 while being in contact with the outer circumferential surface of the detachment roller 313 and the outer circumferential surface of the dipping roller 314, The continuous paper 10 does not come into contact with the coating liquid in the coating liquid container 301.
The separation roller 313 and the dipping roller 314 are located at the lower limit position when the paper tube manufacturing apparatus 1 is in operation, and are located at the upper limit position when the paper tube manufacturing apparatus 1 is stopped.
Therefore, it is possible to prevent the continuous paper 10 from being damaged due to continued immersion in the coating liquid in the coating liquid container 301 while the paper tube manufacturing apparatus 1 is stopped.

The upper blade 302 and the lower blade 303 are installed substantially symmetrically on both upper and lower sides with the continuous paper 10 in between, on a mounting member 306 provided on the container receiver 305. The tips of the upper blade 302 and the lower blade 303 are installed so as to be inclined so that they gradually come into contact with the continuous paper 10 or form a set gap from the upstream side to the downstream side in the conveyance direction of the continuous paper 10.
The upper blade 302 and the lower blade 303 scrape off excess coating liquid from the coating liquid adhered to both the upper and lower surfaces of the continuous paper 10. The amount of the coating liquid applied to both the upper and lower surfaces of the continuous paper 10 can be adjusted by adjusting the gap between the upper blade 302 and the lower blade 303.
By making the portion of the tip of the lower blade 303 that comes into contact with the continuous paper 10 into a square shape, it is possible to prevent the continuous paper 10 from sticking to the lower blade 303 when the continuous paper 10 stops being conveyed when the application liquid is glue.

Control of the amount of coating liquid applied based on the conveyance speed of the continuous paper 10 will be explained.
In the first coating device 100, when the conveyance speed S10 of the continuous paper 10 (10-1) is constant, when the rotation speed of the first coating roller 101 changes, the amount of coating liquid supplied per unit time changes. The amount of coating liquid applied from coating roller 101 to continuous paper 10 changes.
In the second coating device 200, even if the gap between the outer circumferential surface of the second coating roller 201 and the outer circumferential surface of the supply roller 202 is constant, if the rotational speed of the second coating roller 201 and the supply roller 202 changes, Since the amount of coating liquid supplied per hour changes, the amount of coating liquid applied from the second coating roller 201 to the continuous paper 10 (10-2) changes.

In other words, when the first coating roller 101, the second coating roller 201, and the supply roller 202 are each rotating at a constant speed, if the conveyance speed of the continuous paper 10 changes, the amount per unit length of the continuous paper 10 changes. Since the amount of the coating liquid applied also changes, it is not possible to maintain an appropriate amount of the coating liquid applied.
In order to maintain an appropriate coating amount of coating liquid, the rotational speed S20 of the first motor 105 that rotates the first coating roller 101, the second coating roller 201, and the supply speed must be adjusted in accordance with changes in the conveyance speed S10 of the continuous paper 10. It is necessary to change the rotational speed S30 of the second motor 206 that rotates the roller 202 to change the amount of coating liquid applied to an appropriate amount.

A coating liquid coating amount control device that controls the coating liquid coating amount according to the conveyance speed of the continuous paper 10 will be described.
A conveyance speed detection means for detecting the conveyance speed of the continuous paper 10 is provided, and the conveyance speed detection means and the control section 7 constitute a coating amount control device.
For example, as shown in FIG. 3, on the downstream side of the first coating device 100 in the conveyance direction of the continuous paper in the conveyance path of the first continuous paper 10-1, an encoder ( A speed detection roller 400 equipped with a roller (not shown) is rotatably provided. The speed detection roller 400 has a roller material whose surface is covered with a light material (for example, urethane rubber, nitrile rubber, etc.) with a relatively large coefficient of friction, and the first continuous paper 10-1 is wound around it. The continuous paper 10-1 is driven and rotated by being conveyed. The encoder detects the amount of rotation of the speed detection roller 400 and transmits it to the control section 7.

The control unit 7 calculates the current continuous paper conveyance speed S10 from the detected rotation amount of the speed detection roller 400 per unit time. That is, the speed detection roller 400, the encoder, and the control section 7 constitute a conveyance speed detection means, and the conveyance speed detection means and the control section 7 constitute a coating amount control device.
Note that the speed detection roller 400 can be provided for each of the plurality of continuous sheets 10.
The location where the speed detection roller 400 is installed is not limited to the downstream side in the continuous paper conveyance direction of the first coating device 10 on the conveyance path, but may be on the upstream side in the continuous paper conveyance direction of the winding section 4. The longer the conveyance distance of the continuous paper 10, the more likely it is to be affected by the flapping of the continuous paper 10, so a location near the winding section 4 is preferable.

In addition, the location where the speed detection roller 400 is installed is such that the coating liquid applied by the coating device may adhere to the surface of the speed detection roller 400 and the coating liquid may adhere to surfaces other than the coating surface of the continuous paper 10. Therefore, the downstream side in the continuous paper conveyance direction of the coating device that applies a coating liquid other than glue is preferable.
In the embodiment, since the first coating device 100 uses a slip agent as the coating liquid, the speed detection roller 400 is provided downstream of the first coating device 100 in the continuous paper conveyance direction.
The conveyance speed detection means is not limited to one using the speed detection roller 400 and an encoder, and may have other configurations.

The control unit 7 controls the rotational speeds of the first coating roller 101, the second coating roller 201, and the supply roller 202 in the following manner based on the calculated current continuous paper conveyance speed S10.
Numerical values for calculating the rotational speed S20 of the first motor 105 and the rotational speed S30 of the second motor 206 are input into the control unit 7 in advance through a touch panel or the like.
There are eight numerical values to be input, and the four numerical values are the number of times the continuous paper is conveyed from the first application roller 101 to the continuous paper 10 when the continuous paper conveyance speed is the low standard conveyance speed S11, as shown in FIG. 11A. When the set rotational speed S21 of the first motor 105 is low so that the amount of coating liquid applied is appropriate, and the conveyance speed of the continuous paper is a high standard conveyance speed S12, the continuous paper 10 is removed from the first application roller 101. The set rotational speed S22 of the first motor 105 is set at a high speed so that the amount of coating liquid applied to the surface of the first motor 105 is appropriate.

As shown in FIG. 12A, the other four numerical values indicate that the amount of coating liquid applied from the second application roller 201 to the continuous paper 10 is appropriate when the continuous paper transport speed is a low standard transport speed S11. When the set rotation speed S31 of the second motor 206 is low and the conveyance speed of the continuous paper is a high standard conveyance speed S12, the amount of coating liquid applied from the second coating roller 201 to the continuous paper 10 is appropriate. This is the high speed setting rotational speed S32 of the second motor 206.
The low set rotational speeds S21 and S31 relative to the low reference transport speed S11 and the high set rotational speeds S22 and S32 relative to the high reference transport speed S12 are determined through experiments and the like.
In the embodiment, the low-speed reference transport speed S11 is 5 m/min, and the high-speed reference transport speed S12 is 50 m/min, but the invention is not limited to this, and other transport speeds may be used as long as S11<S12. good. Furthermore, the number of numerical values to be input is not limited to eight.

By inputting low and high standard conveyance speeds S11 and S12 and low and high speed setting rotational speeds S21 and S22, a linear function indicating the relationship between continuous paper conveyance speed S10 and rotational speed S20 of the first motor 105 is generated. can get. In other words, the conveyance speed S10 and the rotational speed S20 are the intersection point a of the low-speed standard conveyance speed S11 and the low-speed set rotational speed S1 in the graph of FIG. 11A, and the intersection b of the high-speed reference conveyance speed S12 and the high-speed set rotational speed S22. It will change along the straight line A that connects the .
By inputting low and high standard conveyance speeds S11 and S12 and low and high speed setting rotational speeds S31 and S32, a linear function indicating the relationship between continuous paper conveyance speed S10 and rotational speed S30 of the second motor 206 is generated. can get. In other words, the transport speed S10 and the rotational speed S30 are the intersection c of the low standard transport speed S11 and the low set rotational speed S31 in the graph of FIG. 12A, and the intersection d of the high standard transport speed S12 and the high set rotational speed S32. It will change along the straight line B that connects the .

Furthermore, a first correction value T1 regarding the rotation speed S20 of the first motor 105 and a second correction value T2 regarding the rotation speed S30 of the second motor 206 can be input to the control unit 7.
When the first correction value T1 is input, as shown in FIG. 11B, the low speed setting rotation speed of the first motor 105 is S21 + correction value T1, and the high speed setting rotation speed of the first motor 105 is S22 + correction value T1. becomes. A linear function is obtained from this value, and the conveying speed S10 and the rotation speed S20 change along the straight line C.
When the second correction value T2 is input, as shown in FIG. 12B, the low speed setting rotation speed of the second motor 206 is S31 + correction value T2, and the high speed setting rotation speed of the second motor 206 is S32 + correction value T2. becomes. A linear function is obtained from this value, and the conveyance speed S10 and rotation speed S30 change along the straight line D.

The control unit 7 determines the first speed in the linear function based on the current conveyance speed S10 of the continuous paper calculated from the rotation amount of the speed detection roller 400 per unit time detected by the rotation amount detection means (encoder) of the speed detection roller 400. The rotational speed S20 of the first motor 105 and the rotational speed S30 of the second motor 206 are calculated.
For example, when the detected current transport speed of continuous paper is (S10-1), the rotational speed of the first motor 105 is (S20-1) in FIG. 11A, and (S20-1)+T1 in FIG. 11B. .
When the detected current continuous paper conveyance speed is (S10-1), the rotational speed of the second motor 206 is (S30-1) in FIG. 12A, and (S30-1)+T2 in FIG. 12B.

The control unit 7 instructs the calculated rotational speed S20 of the first motor 105 and the calculated rotational speed S30 of the second motor 206 to the first motor 105 and the second motor 206, respectively. The first motor 105 rotates the first application roller 101 at the designated rotation speed S20, and the second motor 206 rotates the second application roller 201 and the supply roller 202 at the designated rotation speed S30.
Note that the low set rotational speeds S21 and S31, the high set rotational speeds S22 and S32, and the first and second correction values T1 and T2 depend on the difference in coating liquid, the difference in continuous paper, and the diameter of the roller that applies the coating liquid. Differences in the amount of continuous paper wrapped around the roller to which the coating liquid is applied; differences in the conveyance speed of the continuous paper wrapped around the speed detection roller 400 and the conveyance speed of the continuous paper to which the coating liquid is applied; It is possible to input different numerical values in consideration of factors that cause the amount of coating liquid to be applied, such as the temperature of the coating liquid and the temperature and humidity of the surrounding atmosphere, in addition to changes in the conveyance speed of continuous paper.

Furthermore, when the speed detection roller 400 is provided for multiple continuous sheets of paper or when multiple coating devices are provided, which conveyance speed of the calculated continuous sheet conveyance speed is used and which roller of the coating device is used. It is possible to set in advance whether the rotation speed is to be followed.
Furthermore, the values of the low set rotational speeds S21 and S31, the high set rotational speeds S22 and S32, and the first and second correction values T1 and T2, which are changed depending on the difference in each of the conditions described above, are stored in the memory of the control unit 7, for example. It may also be possible to store the values in a memory so that appropriate values can be called up and set as appropriate depending on the job.

When controlling the rotational speed of the second motor 206 of the second coating device 200 as described above, the gap between the outer circumferential surface of the second coating roller 201 and the outer circumferential surface of the supply roller 202 is set to a predetermined value. It is necessary to do so.
Since the second coating device 200 includes a dial gauge 224 and an index handle 240, it has excellent reproducibility of the gap between the outer peripheral surface of the second coating roller 201 and the outer peripheral surface of the supply roller 202, and the second coating device Even after the roller 200 is inspected and maintained, the gap between the outer circumferential surface of the second application roller 201 and the outer circumferential surface of the supply roller 202 can be reliably and easily returned to the value before inspection and maintenance.

Another embodiment of the applicator 3 will be described.
As shown in FIG. 13, a frame 30 is provided with one first coating device 100 and two second coating devices 200 to form a coating section 3.
With this application section 3, the first application device 100 can apply the application liquid to one side of the first continuous paper 10-1, and the second application device 200 can apply the application liquid to one side of the second continuous paper 10-2. The second coating device 200 can apply the coating liquid to one side of the third continuous paper 10-3.
Therefore, different types of coating liquids can be applied to one side of the three rows of continuous sheets 10-1, 10-2, and 10-3.

As shown in FIG. 14, a frame 30 is provided with one first coating device 100 and one second coating device 200 to form a coating section 3.
The first continuous paper 10-1 is brought into contact with the first coating roller 101 of the first coating device 100, and the coating liquid is applied to one side of the first continuous paper 10-1 by the first coating device 100. By bringing the second continuous paper 10-2 and the third continuous paper 10-3 into contact with the second application roller 201 of the device 200 while being separated from each other in the axial direction, one second application device 200 , the coating liquid can be applied to one side of the third continuous paper 10-2, 10-3.
Therefore, the coating liquid can be applied to one side of three rows of continuous paper sheets 10-1, 10-2, and 10-3 using two coating devices.

DESCRIPTION OF SYMBOLS 1... Paper tube manufacturing device, 2... Paper supply part, 3... Coating part, 4... Winding part, 4a... Mandrel, 5... Cutting part, 5a... Rotary blade, 6... Discharge part, 6a... Chute, 7... Control Part, 10... Continuous paper, 10-1... First continuous paper, 10-2... Second continuous paper, 10-3... Third continuous paper, 30... Frame, 40... Attachment notch, 100 ...first coating device, 101...first coating roller, 102...coating liquid container, 103...blade, 105...first motor, 200...second coating device, 201...second coating roller, 202...supply roller, 203... Application liquid container, 204... Second application roller support member, 205... Supply roller support member, 206... Second motor, 221... Spring, 223... Adjustment screw, 224... Dial gauge, 240... Index handle, 400... Speed detection roller.

Claims (3)

a paper supply unit that supplies multiple rows of tape-shaped continuous paper through separate conveyance paths;
a winding unit that is provided downstream of the paper supply unit in the continuous paper transport direction and that winds and transports the plurality of rows of continuous paper in a spiral manner to form a continuous paper tube;
A first application, which is provided between the paper supply section and the winding section, and applies a coating liquid other than glue to at least one row of continuous paper among the plurality of rows of continuous paper supplied from the paper supply section. a device, and a continuous paper provided between the paper supply section and the winding section, the plurality of rows of continuous paper supplied from the paper supply section and to which a coating liquid is applied by the first coating device. an application unit having a second application device that applies glue to one row of continuous paper other than the continuous paper ;
A paper tube comprising: a conveyance speed detection means for detecting the conveyance speed of at least one row of continuous paper among the plurality of rows of continuous paper to which a coating liquid is applied by the first coating device ; and a control unit. A manufacturing device,
The first and second coating devices include a coating liquid container that stores a coating liquid, and are rotated by a motor to apply the coating liquid in the coating liquid container to at least one continuous sheet of the plurality of continuous sheets. an application roller for applying the coating to the
The conveyance speed detection means is configured to be located downstream of the first coating device in the continuous paper conveyance direction and upstream of the winding section in the continuous paper conveyance direction in at least one of the conveyance paths in which the first coating device is provided. a speed detection roller on which the continuous paper is wound and rotates as the continuous paper is conveyed; and a rotation amount detection means for detecting a rotation amount of the speed detection roller and inputting the rotation amount to the control section;
The control unit is configured to calculate the conveyance speed of the continuous paper from the rotation amount per unit time of the speed detection roller detected by the rotation amount detection means, and adjusts the coating liquid according to the conveyance speed of the continuous paper. A rotation speed of the motor is set at which an appropriate amount of coating liquid is applied, and the motor is set at a rotation speed such that an appropriate amount of coating liquid is applied in accordance with the conveyance speed of continuous paper detected by the conveyance speed detection means. A paper tube manufacturing device characterized by having a configuration in which the paper tube is rotated by a rotation speed. The paper tube manufacturing apparatus according to claim 1,
The second coating device includes a supply roller that is rotated by the motor to cause the coating liquid in the coating liquid container to adhere to the coating roller, and an outer circumferential surface of the supply roller and the outer circumferential surface of the coating roller. a film thickness adjustment mechanism that adjusts the gap between and uniformly adjusts the film thickness of the coating liquid adhering to the application roller;
The coating roller is provided so as to be movable toward and away from the supply roller, and is rotated by the motor to apply the applied coating liquid onto at least one row of continuous sheets of the plurality of rows of continuous sheets. Apply to
The film thickness adjustment mechanism includes a gap adjustment device that adjusts the gap by moving the application roller in a direction toward and away from the supply roller, and an adjustment amount of the gap adjusted by the gap adjustment device. A paper tube manufacturing device comprising: adjustment amount grasping means for grasping numerically. a paper supply unit that supplies multiple rows of tape-shaped continuous paper through separate conveyance paths;
a winding unit that is provided downstream of the paper supply unit in the continuous paper transport direction and that winds and transports the plurality of rows of continuous paper in a spiral manner to form a continuous paper tube;
A first application, which is provided between the paper supply section and the winding section, and applies a coating liquid other than glue to at least one row of continuous paper among the plurality of rows of continuous paper supplied from the paper supply section. a plurality of rows of continuous paper provided between the apparatus, the paper supply section, and the winding section, and which are supplied from the paper supply section and other than the continuous paper on which the coating liquid is applied by the first coating device; an application unit having a second application device for applying glue to one row of continuous paper of the continuous paper;
Paper tube manufacturing comprising: a conveyance speed detection means for detecting the conveyance speed of at least one row of continuous paper among the plurality of rows of continuous paper to which a coating liquid is applied by the first coating device ; and a control unit. A device,
The first coating device includes a coating liquid container that stores a coating liquid, and a first coating roller that is rotated by a first motor to apply the coating liquid in the coating liquid container to the continuous paper,
The second applicator includes a glue container that stores glue , a supply roller that is rotated by a second motor to attach the glue in the glue container to a second applicator roller, and is rotated by the second motor. a second applicator roller that applies the adhered glue to the continuous paper and is movable in directions approaching and away from the supply roller; an outer circumferential surface of the supply roller and an outer circumferential surface of the second applicator roller; a film thickness adjustment mechanism that adjusts the gap between the two to uniformly adjust the film thickness of the glue adhering to the second application roller;
The film thickness adjustment mechanism includes a gap adjustment means for adjusting the gap by moving the second application roller toward and away from the supply roller, and a numerical value for adjusting the amount of the gap adjusted by the gap adjustment means. an adjustment amount grasping means for grasping;
The conveyance speed detection means is configured to be located downstream of the first coating device in the continuous paper conveyance direction and upstream of the winding section in the continuous paper conveyance direction in at least one of the conveyance paths in which the first coating device is provided. a speed detection roller on which the continuous paper is wound and rotates as the continuous paper is conveyed; and a rotation amount detection means for detecting a rotation amount of the speed detection roller and inputting the rotation amount to the control section;
The control unit is configured to calculate the conveyance speed of the continuous paper from the rotation amount per unit time of the speed detection roller detected by the rotation amount detection means, and adjusts the coating liquid according to the conveyance speed of the continuous paper. The rotational speed of the first motor and the rotational speed of the second motor at which the coating amount is appropriate are respectively set, and the first motor is controlled to apply the coating liquid in accordance with the conveyance speed of the continuous paper detected by the conveyance speed detection means. The second motor was set to provide an appropriate amount of coating liquid in accordance with the conveyance speed of the continuous paper detected by the conveyance speed detection means. A paper tube manufacturing device characterized by being configured to rotate at a rotational speed.

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