JP3263207B2 - Splicing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper splicing apparatus, and more particularly, to a paper sheet (excluding a plastic film) used for manufacturing sanitary products and the like.
The present invention relates to a paper splicing device used when supplying paper from a web.

[0002]

2. Description of the Related Art Generally, paper and plastic films are used for sanitary products such as sanitary napkins, and these sheet members are continuously supplied to a production line. By the way, when such a continuous supply of the sheet-like member is performed at a high speed, the belt-like sheet of the member is fed out from the raw material or the like and supplied. Then, in order to enable the continuous feeding, it is also necessary to join a new sheet end portion of the sheet to the sheet end portion of the sheet whose feeding is nearing completion. For this reason, various paper or film splicing apparatuses for splicing papers have been proposed.

For example, FIG. 8 is an explanatory view of a conventional paper or film splicing apparatus. As shown in FIG. 8, the paper or film splicing apparatus 1 includes new and old webs 3A, 3
A sheet 4 is supplied from B through a delivery belt 5. The sheet 4 is wound around guide rolls 6, 6... And a meandering correcting machine 7 to form a pair of nip rolls 8, 8 of the splicing device 1.
You will be guided in the meantime. And, at the time of splicing, the raw material 3A
A double-sided pressure-sensitive adhesive tape (adhesive member) is attached to the leading end of the sheet 3A, and the terminal end of the sheet 4 from the sheet 3B and the tip of the sheet 3A are narrowed by the nip rolls 8 and joined. In the spliced state, the sheet 4 is continuously supplied from the raw material 3A, and is guided to a subsequent production line via the transport belt 9 and the moving belt 10.

[0004]

However, in the conventional paper or film splicing apparatus 1, the position of the nip rolls 8, 8 is required because the nip rolls 8, 8 need to be simultaneously fed out and to attach double-sided adhesive tape or the like. And 3A, 3
There is a restriction that the set position of B is separated in distance. Therefore, if the supply speed is 100 m / min,
There is a disadvantage that the paper guide distance becomes extremely long. Also,
In particular, if double-sided adhesive tape is attached to paper used for Saritanny products, harmful substances contained in the tape may reduce the quality, and it takes time to inspect and cut off on the production line, There is a problem of speeding up the line. Accordingly, an object of the present invention is to provide paper (plastic film) used for sheets of sanitary products and the like.
The purpose of the present invention is to provide a paper splicing apparatus which increases the speed of a supply line, shortens the paper guide distance at the time of splicing, and does not require a harmful adhesive member to be attached.

[0005]

According to the present invention, the leading end of the paper from a new paper web is connected to the end of the paper (excluding the plastic film) at the end of the feeding from the paper web of the paper supply unit. A splicing device for embossing, comprising a pair of embossing rolls consisting of a pair of feed rolls and pitch rolls, each having a roll surface in which embossing grooves are formed at a predetermined pitch; Between the processing rolls, the end of the paper and the leading end of the paper are sandwiched in a state of being overlapped, and the overlapped paper surface is passed while pressing the pair of the embossing rolls. By embossing, layered at the same time as embossing
The object has been achieved by providing a paper splicing device characterized in that end portions of paper are joined to each other .

[0006]

In general, when a paper is fed from a raw material, a tension of about 0.1 kg / 10 cm is generated in the paper, and the same applies to the joints where the papers are joined. And requires a bonding force sufficient to oppose it. The paper splicing device of the present invention is intended to easily emboss by overlapping the end portions of the papers.
This is to sufficiently provide the joining force required for joining the paper at the joint. For this reason, the splicing apparatus can splice without requiring an adhesive member or the like and without increasing the paper guide distance or the like at the time of splicing.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a splicing apparatus according to the present invention. FIG. 1 is an explanatory diagram of a paper supply line provided with a paper splicing device according to the present embodiment. FIGS. 2 and 3 are a top view and a side view of the splicing apparatus shown in FIG. FIG. 4 is an enlarged plan view showing one embodiment of the emboss nip roll surface of the paper splicing apparatus according to the present invention. FIG.
(A) and (B) are groove sectional views of each embodiment when the emboss nip roll surface of the paper splicing device according to the present invention is developed to a plane. 6 and 7 are side views of each embodiment of the pinch roll of the paper splicing apparatus according to the present invention.

As shown in FIGS. 1 to 4, a paper splicing apparatus 11 according to this embodiment includes a paper supply section 12 used for sanitary products.
Is a splicing device for splicing the leading end 14A of the absorbent paper 14 from the new raw paper 13A to the terminal end 14B of the absorbent paper 14 at the end of the feeding from the raw paper 13B. An embossing roll including a pinch roll 16 is provided, and a pair of the embossing rolls 15 and 16 sandwiches the end portion 14B of the absorbent paper 14 and the leading end 14A of the absorbent paper 14 in an overlapping state. Then, the overlapped paper surface is formed into a pair of the embossing rolls 15 and 1.
6, the paper is embossed by being passed while being pressed between the end portions 6A, 6A, and 14A of the paper overlapped at the same time as the embossing.
14B are joined together .

The splicing apparatus according to this embodiment will be further described. As shown in FIG. 1, a splicing apparatus 11 is provided in a paper supply line. A belt-shaped absorbent paper 14 used for sanitary products is supplied from a feed belt 5 through a feed belt 13. The absorbent paper 4 is wound around the guide rolls 6, 6... And guided between the feed roll 15 for embossing of the direct joining device 11 and the pinch roll 16. At the time of joining, the end portion 14B of the material 13B and the tip 1 of the material 13A
4A is sandwiched between the feed roll 15 and the pinch roll 16 and joined. In the spliced state, the absorbent paper 14 is continuously supplied from the raw material 13A, and is guided to the subsequent production line through the meandering correction device 7 via the transport belt 9 and the moving belt 10. In addition, each material 1
Below the 3A and 13B, there are provided collection hoppers 18 and 18 for the paper tube 17 from which the supply of the raw absorbent paper 14 has been completed.

As shown in FIGS. 2 and 3, the splicing device 11 includes a feed roll 15 and a pinch roll 16 erected on a machine base 20. A shaft receiving support 21 having a built-in driving device is provided on the machine base 20, and a rotating shaft 22 is provided on the supporting base 21 so as to be rotated by the driving device. The above-mentioned feed roll 15 is attached to the rotating shaft 22 via a key 23 so as not to rotate. A feed roll base 24 is erected on the machine base 20, and a brig case 25 is attached to an 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 of the rotating shaft 22 described above.

The base 20 has a base 27 for pinch rolls.
And a thin cylinder 28 with a guide is mounted on an upper portion of the base 27. The thin cylinder 28 is connected to a support plate 29 of a pinch roll, and holds the support plate 29 movably. The support plate 29 has adjusting bolts 30 at upper and lower ends thereof, and holds the pinch roll mounting shaft 31 via the adjusting bolts 30. Guide plates 32, 32 are attached to the support plate 29. The guide plate 32 has a long hole 33, and the shaft 31 described above is loosely inserted into the long 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 moves in the direction of arrow A in FIG. Can be adjusted. The pinch roll 16 is rotatably mounted on the shaft 31 via a bearing 35, and the pinch roll 16 is
It is positioned at 6, 36, etc.

As shown in FIGS. 2 to 4, embossing grooves 41, 41,... Are formed on each roll surface of the feed roll 15 and the pitch roll 16 at a predetermined pitch. In the splicing device 11 of the present embodiment, two types of grooves 41 in the pitch direction are formed, and the grooves 4 are formed.
In each of the pitch directions 1 (meaning a direction perpendicular to the direction of the groove portion), it is 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.
° (axial direction of the roll). In the present invention, as shown in FIG. 4, in the pitch direction (arrow S) of at least one groove 41, 41... Formed on the roll 15 or 16, the angle β with respect to the paper feeding direction Y is 45 ° to 0 °. °, especially 3
It is preferable that it is 0 ° or less. If the joining surface of the absorbent paper 14 is embossed at the angle β in this range, the mutual frictional force is sufficiently exerted on the tension in the paper feeding direction.

As shown in FIGS. 5A and 5B, according to the present invention, the cross-sectional shape of the groove 41 is not particularly limited. Is 90 ° to 30 °, especially 90 °
It is preferable that the angle is between 60 ° and 60 °. In such a range, the emboss depth for sufficiently exerting the frictional force can be sufficiently formed. If the paper to be processed has a thickness, it is preferable to increase the pitch. Grooves 41, 41,... For embossing the feed roll 15 and the pitch roll 16 of the paper splicing apparatus 11 of the present embodiment.
Has a cross-sectional shape as shown in FIG.
mm, the embossing wall forming angle α is 6
It is formed to be 0 °.

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

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

The feed roll 15 and pitch roller 16 starts clamping, distal portion 14A and the end portion 14B is embossed in the aforementioned groove strip portions 41 ..., embossing
Processing and Ru are bonded simultaneously. In this case, unlike the plastic film, the absorbing paper 14 sufficiently exerts the frictional force due to the embossment, so that it is possible to have a bonding force sufficiently opposing the tension applied to the dispensed absorbing paper 14. For this reason, the splicing apparatus 11 can splice without requiring an adhesive member or the like and without increasing the paper guide distance or the like at the time of splicing. In the above embodiment, the absorbent paper 1 was used.
Although No. 4 was used, the use is not particularly limited as long as it is ordinary paper (excluding plastic films).

[0017]

As described above, the splicing apparatus according to the present invention can be applied to paper (plastic film) used for sheets such as sanitary products.
The speed of the supply line ( excluding lum) is increased, the paper guide distance at the time of splicing is shortened, and mounting is complicated and no harmful adhesive member is required.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a paper supply line provided with a paper splicing apparatus according to the present embodiment.

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

FIG. 3 is a side view of the splicing apparatus shown in FIG.

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

5 (A) and 5 (B) are cross-sectional views of grooves of various embodiments when the emboss nip roll surface of the paper splicing device according to the present invention is developed in a plane.

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

FIG. 7 is a side view of an embodiment of the pinch roll of the paper splicing apparatus 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]

 Reference Signs List 5 delivery belt 6 guide roll 7 meandering correction device 9 transport belt 11 paper splicing device 12 paper supply unit 13A new web 13B old web 14 absorption paper 14A end of absorption paper from new web 14B absorption paper from old web 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 Slot of guide plate 34 Nut 35 Bearing 41 Groove

Claims (3)

(57) [Claims] 1. A paper splicing apparatus for splicing a leading end of a paper from a new paper stock to an end of a paper (excluding a plastic film) at the end of feeding of the paper from a paper stock in a paper supply unit. Grooves for processing each have a roll surface formed at a predetermined pitch, comprising a pair of embossing rolls consisting of a pair of feed rolls and pitch rolls, between the pair of embossing rolls, sandwiched in a state of overlapping end portions and the paper leading end portion of the paper, the and the superposed paper, by embossing by passing while nipped between the rolls for the pair of the embossing, ene
A paper splicing device characterized in that ends of papers overlapped at the same time as boss processing are joined together . 2. The embossing of the embossing roll, wherein the embossing pitch is at least 1.5.
mm or more, the angle α of the embossed wall with respect to the paper surface is 90 °.
The splicing device according to claim 1, wherein the angle is from 60 to 60 °. 3. The splicing apparatus according to claim 1, wherein an angle β of the pitch direction in the embossing of the embossing roll with respect to a paper feeding direction is 45 ° or less.