JPH07137896A - Paper splicing device - Google Patents

Abstract

PURPOSE:To eliminate necessity for a bonding member or the like while shortening a guide paper distance at the time of connecting paper by interposing the paper in a condition of overlapping its terminal end part and point end part, and connecting overlapped paper surfaces by embossing processing. CONSTITUTION:In a paper splicing device 11, in delivering an old web 13B approaches ending, a finish end of the web is detected by a detector, and a feed out belt 5 of a new web 13A is brought into contact with the web 13A, to start delivery. In this way, a point end part 14A of absorbent paper 14 is guided between a feed roller 15 and a pinch roller 16, to overlap the paper among a terminal end part 14B of the absorbent paper 14 of the old web 13B, feed roller 15 and the pinch roller 16. Press interposing is started by the feed roller 15 and the pinch roller 16 to be subjected to embossing processing at the point end part 14A and the terminal end part 14B in a groove streak part formed in a surface of the roller 16. Here by sufficiently displaying frictional force by embossing finish, in the absorbent paper 14, connecting force sufficiently resisting against tension at delivery time can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper splicing device, and more particularly to a paper splicing device used when a paper sheet used for manufacturing sanitary products or the like is supplied from an original fabric. Is.

[0002]

2. Description of the Related Art Generally, sanitary products such as sanitary napkins are made of paper and plastic films, and these sheet-like members are continuously supplied to the production line. By the way, when such continuous feeding of the sheet-shaped member is performed at a high speed, the strip-shaped sheet of the member is fed from the original sheet or the like and fed. Then, in order to enable the continuous supply, it is also necessary to join a new sheet front end portion to a sheet end portion of the original sheet which is near the end of feeding. For this reason, various paper or film splicing devices for splicing paper supplies have been proposed in the past.

For example, FIG. 8 is an explanatory view of a conventional paper or film joining device. As shown in FIG. 8, the paper or film splicing device 1 includes the old and new originals 3A and 3A of the sheet feeding unit 2.
The sheet 4 is fed from B through the delivery belt 5. The sheet 4 is wound around the guide rolls 6, 6 ... And the meandering correction machine 7 to form a pair of nip rolls 8, 8 of the splicing device 1.
You will be guided in between. And at the time of seaming, the original fabric 3A
A double-sided adhesive tape (adhesive member) is attached to the leading end of the sheet, and the trailing end of the sheet 4 from the original 3B and the leading end of the original 3A are squeezed by the nip rolls 8 and joined together. In the spliced state, the sheet 4 is continuously supplied from the original fabric 3A, and is guided to the subsequent production line via the conveyor belt 9 and the moving belt 10.

[0004]

However, in the conventional paper or film splicing device 1, the positions of the nip rolls 8 and 8 are required because it is necessary to feed the nip rolls 8 and 8 at the same time and to attach a double-sided adhesive tape or the like. And original 3A, 3
The setting position of B is restricted by the distance. Therefore, if the supply speed is 100 m / min,
This causes a disadvantage that the paper-conducting distance becomes extremely long. Also,
In particular, if double-sided adhesive tape is attached to the paper used for Sari Tani products, harmful substances contained in the tape may deteriorate the quality, and it takes time and effort to inspect and cut off the product on the production line. It has become a problem of speeding up the line. Therefore, an object of the present invention is to speed up the supply line of sheets such as sanitary products, especially papers,
It is an object of the present invention to provide a paper splicing device which shortens the paper-conducting distance at the time of the paper splicing and does not require a harmful adhesive member because the mounting is complicated.

[0005]

SUMMARY OF THE INVENTION The present invention provides a paper splicing device for joining a leading end of a paper from a new paper stock to a trailing end of the paper at the end of feeding of the paper supply unit from the paper stock. By providing a joining means for sandwiching the end portion of the paper and the front end portion of the paper in a state of being overlapped and for joining the overlapped paper surfaces by embossing, The above object is achieved.

[0006]

In general, when the paper is unwound from the original fabric, a tension of about 0.1 kg / 10 cm is generated in the paper, but the same tension is also applied to the joint part where the paper is spliced. It takes a lot of force and requires a joining force to counter it. The paper splicing device of the present invention is for easily embossing by stacking the end portions of the paper, but by such embossing, the frictional action between the papers is sufficiently exerted,
The joining force necessary for paper joining at the joining portion is sufficiently given. For this reason, the paper splicing device can splice paper without requiring an adhesive member or the like and without increasing the distance of the paper guide at the time of paper splicing.

[0007]

Embodiments of the paper splicing device of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an explanatory diagram of a paper supply line provided with a paper splicing device according to this embodiment. 2 and 3 are a top view and a side view of the paper splicing device in FIG. FIG. 4 is an enlarged plan view showing an embodiment of the embossing nip roll surface of the paper splicing device according to the present invention. Figure 5
(A) And (B) is a groove sectional view of each embodiment when the embossing nip roll surface of the paper splicing device according to the present invention is expanded to a flat surface. 6 and 7 are side views of each embodiment of the pinch roll of the paper splicing device according to the present invention.

As shown in FIGS. 1 to 4, the paper splicing device 11 of this embodiment is a paper supply unit 12 used for sanitary products.
Is a paper splicing device for joining the leading end portion 14A of the absorbent paper 14 from the new paper raw material 13A to the end portion 14B of the absorbent paper 14 at the end of feeding from the original paper material 13B.
The end roll 14B and the front end 14A of the absorbent paper 14 are sandwiched in a state of being overlapped, and the embossing feed roll 15 and the pinch roll 16 that join the overlapped paper surfaces by embossing are provided.

To further explain the paper splicing device according to this embodiment, as shown in FIG. 1, the paper splicing device 11 is provided in the paper supply line, and the splicing device 11 includes the old and new originals 13A of the paper supply unit 12. The strip-shaped absorbent paper 14 used for sanitary products is supplied from 13B through the delivery belt 5. The absorbent paper 4 is wound around the guide rolls 6, 6 ... and guided between the feed roll 15 for embossing and the pinch roll 16 of the direct splicing device 11. Then, at the time of joining, the end portion 14B of the original fabric 13B and the front end portion 1 of the original fabric 13A.
4A and the feed roll 15 and the pinch roll 16 are narrowed and spliced together. In the spliced state, the absorbent paper 14 is continuously supplied from the original fabric 13A, and is guided to the subsequent production line through the meandering correction device 7 and the conveyor belt 9 and the movable belt 10. Also, each original 1
Below the 3A and 13B, recovery hoppers 18 and 18 for the paper tube 17 after the feeding of the original absorption paper 14 is provided.

As shown in FIGS. 2 and 3, the splicing device 11 comprises a feed roll 15 and a pinch roll 16 which are erected on a machine base 20. A shaft receiving support 21 having a built-in drive device is provided on the machine base 20, and a rotary shaft 22 is erected on the support base 21 so as to be rotated by the drive device. The feed roll 15 described above is non-rotatably attached to the rotary shaft 22 via a key 23. A feed roll base 24 is erected on the machine base 20, and a brig case 25 is attached to the upper end of the base 24. A bearing 26 is housed in the brig case 25, and the bearing 26 rotatably supports the upper end portion of the rotating shaft 22 described above.

The machine base 20 has a base 27 for a pinch roll.
Is installed upright, and a thin cylinder 28 with a guide is attached to the upper part of the base 27. The thin cylinder 28 is connected to a support plate 29 of a pinch roll, and movably holds the support plate 29. The support plate 29 has adjusting bolts 30 and 30 at the upper and lower ends thereof, and holds the pinch roll mounting shaft 31 via the adjusting bolts 30 and 30. Guide plates 32, 32 are attached to the support plate 29. The guide plate 32 has an elongated hole 33, and the shaft 31 is loosely fitted and inserted into the elongated hole 33. Therefore, by adjusting the nut 34 provided on the adjusting bolt 30, the shaft 31 is guided in the elongated hole 33 of the guide plate 32 and moved in the direction of arrow A in FIG. 3 (direction opposite to the feed roll). Can be adjusted. The pinch roll 16 is rotatably attached to the shaft 31 via a bearing 35.
It is positioned at 6, 36, etc.

As shown in FIGS. 2 to 4, groove surfaces 41, 41, ... For embossing are formed on each surface of the feed roll 15 and the pitch roll 16 at a predetermined pitch.
In the joining device 11 of the present embodiment, two kinds of pitch direction groove portions 41, 41, ... Are formed, and each pitch direction of the groove portions 41 (meaning a direction perpendicular to the direction of the groove portions). Includes 0 ° with respect to the feeding direction Y of the absorbent paper 14 (the circumferential direction of the roll) and 90 ° with respect to the feeding direction Y (the axial direction of the roll). In the present invention, as shown in FIG. 4, the pitch direction (arrow S) of at least one groove portion 41, 41, ... Formed on the roll 15 or 16 has an angle β with respect to the paper feeding direction Y of 45 ° to 0 °. °, especially 30 °
The following is preferable. When the joint surface of the absorbent paper 14 is embossed with the angle β in this range, mutual frictional force is sufficiently exerted against the tension in the paper feeding direction.

As shown in FIGS. 5 (A) and 5 (B), and in the present invention, the sectional shape of the groove 41 is not particularly limited, but the pitch of the groove 41 is 1.5 mm or more and the embossed paper surface. The angle α of the embossed wall with respect to 90 ° to 30 °, especially 90
It is preferably from 60 to 60 °. In such a range, the embossing depth for sufficiently exhibiting the frictional force can be formed sufficiently. Further, when the paper to be processed has a thickness, it is preferable to increase the pitch. Groove portions 41, 41 for embossing the feed roll 15 and the pitch roll 16 of the paper splicing device 11 of this embodiment.
Has a cross-sectional shape as shown in FIG. 5 (A), and its pitch P is 1.5
mm, the embossed wall forming angle α is 6 with respect to the absorption paper surface.
It is formed to be 0 °.

Further, as shown in FIGS. 6 and 7, in the present invention, the pinch roll 16 having predetermined grooves 42, 42 formed in accordance with a predetermined width of papers used for sanitary products is used. it can.

In the paper splicing device 11 configured as described above, when the feeding of the old original fabric 13B approaches the end, a detector (not shown) detects the end thereof, and the new original fabric 1
The feed belt 5 of 3A comes into contact with the original 13A and starts feeding. As a result, the front end portion 14A of the absorbent paper 14 is guided between the feed roll 15 and the pinch roll 16, and the end portion 14B of the absorbent paper 14 of the old original fabric 13B overlaps the feed roll 15 and the pitch roll 16.

The feed roll 15 and the pitch roll 16 start narrowing pressure, and the front end portion 14A and the end portion 14B are embossed with the groove portions 41, 41 ,. In this case, unlike the plastic film, the absorbent paper 14 sufficiently exerts a frictional force due to embossing, so that it is possible to provide a joining force that sufficiently opposes the tension applied to the payout absorbent paper 14. Therefore, the paper splicing device 11
The splicing can be performed without the need for an adhesive member or the like, and without increasing the paper-conducting distance during splicing. Although the absorbent paper 14 is used in the above embodiment, the absorbent paper 14 is not limited to the use as long as it is a normal paper.

[0017]

The paper splicing device according to the present invention speeds up the supply line of sheets such as sanitary products, especially the paper, shortens the paper-conducting distance at the time of the paper splicing, and is complicated to mount. It does not require harmful adhesive members.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a paper supply line provided with a paper splicing device according to this embodiment.

2 is a top view of the paper splicing device in FIG. 1. FIG.

3 is a side view of the paper splicing device in FIG. 1. FIG.

FIG. 4 is an enlarged plan view showing an embodiment of the embossing nip roll surface of the paper splicing device according to the present invention.

5 (A) and 5 (B) are groove cross-sectional views of various embodiments when the embossing nip roll surface of the paper splicing device according to the present invention is expanded to a flat surface.

FIG. 6 is a side view of an embodiment of the pinch roll of the paper splicing device according to the present invention.

FIG. 7 is a side view of an embodiment of the pinch roll of the paper splicing device according to the present invention.

FIG. 8 is an explanatory diagram of a paper supply line provided with a conventional paper splicing device.

[Explanation of symbols]

 5 Sending belt 6 Guide roll 7 Meandering correction device 9 Conveyor belt 11 Paper splicing device 12 Paper supply unit 13A New original fabric 13B Old original fabric 14 Absorbing paper 14A End of absorbing paper from new original fabric 14B Absorbing paper from old original fabric 15 Feed roll 16 Pinch roll 20 Machine stand 22 Rotating shaft 28 Thin cylinder 30 Adjust bolt 31 Pinch roll mounting shaft 32 Guide plate 33 Guide plate long hole 34 Nut 35 Bearing 41 Groove part

Claims (3)

[Claims] 1. A paper splicing device for splicing a leading end portion of a paper from a new paper roll to a trailing end of the paper at the end of feeding from the paper roll in a paper supply unit, Sandwich the tops of the paper in a pile,
Further, a paper splicing device comprising a joining means for joining the stacked paper surfaces by embossing. 2. The paper splicing device according to claim 1, wherein the embossing of the joining means has a pitch in the embossing of at least 1.5 mm and an angle α of the embossing wall with respect to the paper surface is 90 ° to 60 °. 3. The pitch direction in the embossing of the joining means has an angle β of 45 ° with respect to the paper feeding direction.
The paper splicing device according to claim 1 or 2, which is as follows.