JPH082757A - Web joining equipment - Google Patents

Abstract

PURPOSE:To provide a web connecting device which attains improvement of a quality and reducing a cost by obtaining pressing force necessary for connecting a web with a simple constitution. CONSTITUTION:A rotatable press contact roller, winding out a running web W1 onto a roll external surface of a roll-shaped web W2 to bring these webs Wl and W2 into press contact, is rotatably mounted on a supporting shaft 28 supported through spherical bearings 45, 46 to point end parts of a pair of respectively independently turnable operating levers 24, 25, to make this press contact roller approachable/separable relating to the web W2 through the operating levers 24, 25 by an air cylinder 32 and further swivelable along a roll radial direction of the web W2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web processing apparatus for processing printing, coating, etc. on a web such as paper, plastic film, cellophane, etc., for joining a running web being supplied and a new web. Regarding the joining device.

[0002]

2. Description of the Related Art For example, in a web-fed rotary printing press,
Printing is performed by unwinding printing paper (hereinafter referred to as the web) such as long paper or film wound in a roll, and when the web approaches the end, It is necessary to continue the next new web and continue. In this case, work is performed using a web joining device.

As a paper splicing device for such a web-fed rotary printing press, there is one disclosed in Japanese Utility Model Laid-Open No. 5-26294. FIG. 7 is a schematic view of a paper splicing device for a conventional web-fed rotary printing machine disclosed in Japanese Utility Model Laid-Open No. 5-26294.
FIG. 8 shows a cross section of the main part of the paper splicing device. 7 and 8
As shown in FIG. 3, in the paper splicing device of the web-fed rotary printing press, a turret arm 14 is rotatably supported by a swivel shaft 13, and support shafts 15 and 16 provided at respective ends of the turret arm 14. .. Web W
1, W2 ... Are wound in a roll shape and rotatably supported. Usually, the roll-shaped web W1 located below is unwound and fed to a printing unit (not shown) while being guided by the guide rollers 17 and 18.

A rotary shaft 23 is rotatably supported by bearings 21 and 22 on the left and right frames 11 and 12, and each end of the rotary shaft 23 is positioned inside the left and right frames 11 and 12. The intermediate portions of the L-shaped actuating levers 24 and 25 are fixed by fixing pins 26 and 27. Then, a fixing bolt 3 is attached to the tip of each actuating lever 24, 25.
The bearing shaft 28 is fixed by 8, 39.
The bearings 29, 30 are used for the pressure roller 3 on the sponge surface layer.
1 is rotatably mounted facing the web W2.
On the other hand, the tip ends of the cylinder rods 34 and 35 of the air cylinders 32 and 33 that are swingably mounted on the left and right frames 11 and 12 are connected to the base ends of the operating levers 24 and 25, respectively. Reference numeral 36 is a cutter for cutting the web.

Therefore, when the air cylinders 32 and 33 are driven, the cylinder rods 34 and 35 are moved in the axial direction to rotate the respective operating levers 24 and 25, and the pressure contact roller 31.
Can be moved toward and away from the roll-shaped web W2.

Then, the roll-shaped web W1 located below is rotated and unwound, and this web W1 is guided by the guide rollers 17 and 18 and supplied to a printing unit (not shown). When the web W1 approaches the end, the air cylinders 32 and 33 are driven to move the operating levers 24 and 25 through the cylinder rods 34 and 35 as shown in FIG.
Is rotated in the clockwise direction to bring the pressure contact roller 31 into close contact with the roll-shaped web W2 for pressure contact. On the other hand, Web W
The web W1 with the glue 37 attached to the web tip of the outer surface of 2
When the glue 37 comes to a position where it overlaps the web W1, it is rotated in advance so as to have the same circumferential speed as that of the web W1.
The two are joined by the glue 37 by being pressed against each other. Then, by cutting the web W1 by the cutter 36, the leading end of the next new web W2 is joined to the trailing end of the running web W1 and can be continuously supplied to the printing unit.

[0007]

By the way, in the above-described paper splicing device of the paper web printing press, a predetermined tension acts on the web being conveyed in the press, so that the running web W1 and The joining with the new web W2 must be reliably performed. In order to reliably bond the web W1 and the web W2 to each other, it is required to press them together by the press roller 31 at a high pressure. Therefore, the hardness of the sponge surface layer of the press roller 31 is made higher than that in the conventional case, and the pressure receiving area is increased. It is considered to reduce.

On the other hand, the support shaft 16 for supporting the web W2 and the pressure contact roller 31 are not always mounted in parallel with each other, and the parallel state between the two may be slightly deviated due to manufacturing errors or mounting errors of the members. is there. In addition, manufacturing
The web W2 itself supported by the support shaft 16 may be distorted during the distribution / preservation process. When the support shaft 16 and the pressure contact roller 31 are not parallel to each other or the web W2 itself is distorted in this way, as shown by a two-dot chain line in FIG. The outer surface is no longer parallel, and when the pressure roller 31 is pressed against the web W2, a one-sided contact state occurs.

In this way, when the pressure contact roller 31 is pressed against the web W2, the web W1
And the web W2 are securely joined to each other by the pressing roller 31.
When the surface layer of the sponge is made to have a high hardness, when the pressing roller 31 is pressed against one side of the web W2,
The pressing roller 31 cannot press the outer surface of the web W2 in the axial direction as a whole, and there is a risk that the web W1 and the web W2 may be poorly joined.

Further, if the sponge surface layer of the pressure contact roller 31 is softened in order to prevent defective pressure contact between the web W1 and the web W2 due to partial contact between the web W2 and the pressure contact roller 31, the elastic force of the sponge surface layer itself causes the web. The outer surface of W2 can be pressed against the entire axial direction to bond the web W1 and the web W2. Instead, the supply pressure of the air cylinders 32 and 33 is increased or the inner diameter of the cylinder is increased to increase the pressing force of the pressure roller 31 against the web W2, thereby reliably joining the webs W1 and W2. I was going to do it. However, this increases the cost of the device, and the pressing roller 31 is damaged due to an increase in pressing force, which causes problems such as frequent replacement of the roller.

The present invention solves such a problem, and provides a web joining apparatus which can obtain a pressing force required for joining webs with a simple structure, improve the quality and reduce the cost. The purpose is to provide.

[0012]

A web joining apparatus of the present invention for achieving the above object is a web joining apparatus for joining a traveling first web and a second web wound in a roll shape. , A rotatable pressing roller that presses the first web against the second web is provided so as to move toward and away from the second web, and swings along the roll radial direction of the second web. It is characterized by being movably supported.

[0013]

When the first web and the second web are connected to each other, the running first web and the second web wound in a roll shape are brought into contact with each other by the contact roller so that the two are joined together. To be done. At this time, even if the outer surface of the pressure-contact roller is not parallel to the outer surface of the roll of the second web, the pressure-contact roller swings along the radial direction of the roll of the second web, so that the pressure-contact roller is According to the outer surface of the roll of the second web, the first web and the second web are surely joined to each other with uniform pressure contact in the entire axial direction.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of a main part of a paper splicing device of a web-fed rotary printing press to which a web joining device according to a first embodiment of the present invention is applied, and FIGS. 2 and 3 are modifications of the first embodiment of the present invention. The principal part cross section of the paper splicing apparatus showing an example is shown. The members having the same functions as those of the conventional example described above are designated by the same reference numerals, and the duplicated description will be omitted.

In the present embodiment, the case where the web joining device of the present invention is applied to a paper splicing device of a web-fed rotary printing press will be described. In the paper splicing device of the paper wrapper printing machine of this embodiment, as shown in FIG.
A rotary shaft 23 is attached to the rotary shaft 23 by fixing bolts 41 and 42, and the left and right frames 11 and
L-shaped actuating levers 24, 25 located inside 12
The intermediate portion of is rotatably supported by bearings 43 and 44. Then, the spherical bearing units 45 and 46 as bearings having an aligning property are provided at the tip ends of the respective operating levers 24 and 25.
Each end of the support shaft 28 is rotatably and oscillatably supported by means of a bearing 29, 30 on which a pressure roller 31 having a sponge surface layer is rotatably mounted facing the web W2. Has been done. The hardness of the sponge surface layer of the pressing roller 31 is relatively higher than that of the conventional one, and when the pressing roller 31 presses the roll outer surface of the web W2, the web W1 and the web W2 do not bend.
The hardness is such that they can be securely joined. The spherical bearing units 45 and 46 have the same structure and are composed of a spherical inner cylinder 47, a bolt 48, and a spherical outer cylinder 49.

On the other hand, at the base ends of the actuating levers 24 and 25, the tip ends of the cylinder rods 34 and 35 of the air cylinders 32 and 33 (see FIG. 7) which are swingably mounted on the left and right frames 11 and 12, respectively. The parts are connected. Therefore,
When the air cylinders 32 and 33 are driven, the cylinder rods 34 and 35 move in the axial direction, so that the respective operating levers 2
4, 25 rotate, and the pressing roller 31 can be moved toward and away from the roll-shaped web W2.

When the running web W1 is joined to the rolled web W2, the air cylinders 32 and 33 drive the cylinder rods 34 and 35 to rotate the operating levers 24 and 25. Move. Then, the pressing roller 31 approaches the web W2 and presses the outer surface of the web W2 in a state where the web W1 overlaps. Therefore, the web W1 and the web W2 are joined by the glue 37 (see FIG. 7).

At this time, if the web W2 has a distorted shape and the outer surface of the roll is inclined with respect to the axis of rotation, the pressure roller 31 contacts the outer surface of the roll of the web W2.
Will be one-sided. However, in this embodiment, the operating levers 24 and 25 are independently rotatably supported, and the bearing shaft 2 of the pressure roller 31 is supported.
Reference numeral 8 is rotatably and swingably supported by the tip ends of the operating levers 24 and 25 via spherical bearing units 45 and 46.
Therefore, each of the operating levers 2 is operated by the air cylinders 32 and 33.
When the pressure contact rollers 31 are brought closer to the web W2 by rotating the pressure contact rollers 4 and 25, one end of the pressure contact roller 31 is moved to the web W2.
The large-diameter side (right side in FIG. 1) is contacted and pressed.
On the other hand, the other end side of the pressure contact roller 31 also approaches the small diameter side (left side in FIG. 1) of the web W2 and presses it. Then, the outer surface of the roll of the web W2 is pressed against the entire surface in the axial direction by the sponge surface layer of the press roller 31 having a relatively high hardness, and the web W1 and the web W2 are securely bonded.

As described above, in the paper splicing device of the paper wrapper of the present embodiment, the operating levers 24 and 25 are independently rotatable, and the support shaft 28 of the pressure roller 31 is provided.
To the operating levers 24 and 25, the spherical bearing unit 45,
Since the roller W is rotatably supported via 46, even if the outer surface of the roll of the web W2 and the outer surface of the pressure roller 31 are not parallel, the pressure roller 31 oscillates in the roll radial direction of the web W2. By moving, the outer surface of the pressing roller 31 is pressed uniformly over the entire axial direction following the outer surface of the roll of the web W2, and the web W1 and the web W2 can be reliably joined.

Further, in the above embodiment, the pressure contact roller 31 is used.
The bearing shaft 28 is rotatably supported by the tip ends of the actuating levers 24 and 25 via spherical bearing units 45 and 46. The bearing shaft is left and right independently, and the bearing inside the pressure roller has centering property. It may be configured as follows.

That is, as shown in FIG. 2, the left and right independent support shafts 51, 52 are attached to the bolts 53, 5 at the tips of the respective operating levers 24, 25 rotatably supported by the rotary shaft 23.
The pressure contact roller 31 having a relatively high hardness sponge surface layer is rotatably mounted on the inner ends of the respective bearing shafts 51 and 52 via aligning bearings 55 and 56 as bearings having an aligning property. Supported by. Therefore, the respective actuating levers 24 and 25 are independently rotatable, and the pressure contact roller 31 is supported by the bearing shaft 5 via the centering bearings 55 and 56.
1, 52 are rotatably and rotatably supported, so that even if the outer surface of the roll of the web W2 and the outer surface of the press roller 31 are not parallel, the press roller 31 oscillates in the roll radial direction of the web W2. By moving, the outer surface of the pressure contact roller 31 is pressed against the entire outer surface of the web W2 in the axial direction thereof, so that the web W1 and the web W2 can be reliably joined. Furthermore, since the aligning bearings 55 and 56 are solely responsible for the functions of both the rotating bearing and the swinging spherical bearing of the pressure contact roller 31, the structure is simple, and the bearing shafts 51 and 52 are left and right independent, so that they are lightweight. Can be realized.

Further, the pressure contact roller 31 is not limited to the above-mentioned respective embodiments, but may be configured to have a shaft-like shape so as to be rotatably and swingably supported on the tip end portions of the operating levers 24 and 25.
That is, as shown in FIG. 3, the operating levers 24 and 25 are rotatably supported by the rotary shaft 23, while the pressure contact roller 31 having a sponge surface layer of relatively high hardness has bearing shafts 61 and 62 is integrally formed. The bearing shafts 61 and 62 of the pressure roller 31 are rotatably supported on the tip ends of the respective operating levers 24 and 25 via aligning bearings 63 and 64. Therefore, the respective operating levers 24 and 25 are independently rotatable, and the bearing shafts 61 and 62 of the pressure contact roller 31 rotate and swing to the tip end portions of the operating levers 24 and 25 via the alignment bearings 63 and 64. Since the outer surface of the roll of the web W2 and the outer surface of the pressure roller 31 are not parallel to each other, the pressure roller 31 is supported by the web W2.
Of the pressing roller 3 by swinging along the roll radial direction of
The outer surface of No. 1 follows the outer surface of the roll of the web W2, and is pressed against the entire surface in the axial direction thereof.
2 can be reliably joined. Further, the functions of both the rotating bearing and the swinging spherical bearing of the pressure contact roller 31 are adjusted by the aligning bearing 63,
Since 64 is solely responsible for the structure, the structure is simple, and since the bearing shafts 61 and 62 are integrally formed at both ends of the pressure contact roller 31, the weight can be reduced.

In each of the above-described embodiments, the operating levers 24 and 25 are rotatably supported by the air cylinders 32 and 33, and the pressure contact roller 31 is attached to the tip of each operating lever 24 and 25. Although the paper splicing device constituting the above has been described, the paper splicing device of the paper wrapper of the present invention is not limited to this embodiment.

FIG. 4 is a schematic view of a paper splicing device of a paper web printing machine to which a web bonding device according to a second embodiment of the present invention is applied, and FIG.
FIG. 6 shows a cross section of the main part of the paper splicing device of the paper wrapper, and FIG. 6 shows a cross section of the main part of the paper splicing device of the second embodiment of the present invention. The members having the same functions as those in the above-described embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

As shown in FIGS. 4 and 5, in the paper splicing device of the paper web printing machine of this embodiment, the support shafts 15 and 1 of the turret arm 14 which is rotatably supported by the swivel shaft 13.
Webs W1 and W2 are wound around rolls 6 and are rotatably supported, and the web W1 located below is fed out and guided by guide rollers 17 and 18 while not shown in the drawing section. To be supplied to.

Further, the linear motion guides 71 and 72 are provided at positions facing the left and right frames 11 and 12, respectively.
Is attached, and this linear motion guide 7
Guide portions 73, 74 are formed on the reference numerals 1, 72. The shaft ends of the bearing shaft 28 are movably fitted to the guide portions 73, 74, and the bearing 2 is attached to the bearing shaft 28.
A pressing roller 31 having a relatively high hardness sponge surface layer is rotatably supported by 9, 30. On the other hand, the air cylinders 32 whose base end parts are swingably mounted,
In 33, the tip ends of the cylinder rods 34 and 35 are connected to the shaft ends of the support shaft 28 via knuckle joints 75 and 76. Further, restriction pins 77 and 78 are embedded in the respective shaft ends of the support shaft 28 so as to be located between the frames 11 and 12 and the knuckle joints 75 and 76, respectively. Therefore, when the air cylinders 32 and 33 are driven, the cylinder rod 3
The support shaft 28 moves along the guide portions 73 and 74 of the linear motion guides 71 and 72 by the axial movement of the rollers 4 and 35, and the pressing roller 31 can be moved toward and away from the roll-shaped web W2. it can. At this time, the restriction pins 77 and 78 prevent the bearing shaft 28 from moving in the axial direction to regulate the position of the pressure contact roller 31, and when the pressure contact roller 31 swings largely, the air cylinders 32 and 33 are moved. A collision with the frames 11 and 12 can be avoided.

When the cylinder rods 34 and 35 are driven by the air cylinders 32 and 33, the shaft ends of the bearing shaft 28 move along the guide portions 73 and 74 of the linear motion guides 71 and 72, The pressing roller 31 is moved closer to the web W2. Then, one end side of the pressure contact roller 31 comes into contact with and presses the large diameter side (right side in FIG. 5) of the web W2, while the other end side of the pressure contact roller 31 also has a smaller diameter side (FIG. 5). (Approx. Left side), and press it. In this manner, the pressure contact roller 31 is swung by the knuckle joints 75 and 76 of the support shaft 28, so that the relatively hard sponge surface layer uniformly presses the outer surface of the roll of the web W2 in the axial direction, and the web W1. And the web W2 are reliably joined.

In this way, the bearing shaft 28 of the pressure contact roller 31 is supported by the linear motion guides 71 and 72, and
Since the end of the bearing shaft 28 is swingably connected to the air cylinders 32 and 33 via the knuckle joints 75 and 76, the outer surface of the roll of the web W2 and the outer surface of the pressure roller 31 are not parallel to each other. Even if the pressure roller 31 is used for the web W2
Of the pressing roller 3 by swinging along the roll radial direction of
The outer surface of No. 1 follows the outer surface of the roll of the web W2 and is uniformly pressed over the entire axial direction, so that the web W1 and the web W2 can be reliably joined. Furthermore, since the ends of the extended support shaft 28 and the linear motion guides 71 and 72 are responsible for the functions of the operating lever, the rotary shaft, and the bearing, the structure is simplified.

In the above embodiment, the pressure contact roller 31 is used.
Although the shaft ends of the support shaft 28 are swingable by the air cylinders 32 and 33, it is also possible to obtain the same operation with one air cylinder.

That is, as shown in FIG. 6, the linear motion guide 7 attached to the left and right frames 11 and 12 is used.
The shaft ends of the bearing shaft 28 are movably fitted to the guide portions 73, 74 of the bearings 1, 72, and the pressure contact roller 31 is rotatably supported by the bearings 29, 30 on the bearing shaft 28. There is. On the other hand, in the air cylinder 32 whose base ends are swingably mounted, the tip end of a cylinder rod 34 is connected to an intermediate part of a swing frame 82 via a knuckle joint 81. Each end of the support shaft 28 passes through each end of the swing frame 82, and is fixed by the fixing pins 83 and 84.

Therefore, the bearing shaft 28 of the pressure contact roller 31 is supported by the linear motion guides 71 and 72, and the end of the bearing shaft 28 is supported by the swing frame 82 and the knuckle joint 81.
Since the outer surface of the roll of the web W2 and the outer surface of the pressure contact roller 31 are not parallel to each other, the pressure contact roller 31 is connected to the air cylinder 32 via the web cylinder W2.
Of the pressing roller 3 by swinging along the roll radial direction of
The outer surface of No. 1 follows the outer surface of the roll of the web W2 and is uniformly pressed over the entire axial direction, so that the web W1 and the web W2 can be reliably joined. Furthermore, since the ends of the extended support shaft 28 and the linear motion guides 71 and 72 are responsible for the functions of the operating lever, the rotary shaft, and the bearing, the structure is simplified.

In each of the above-described embodiments, the web joining device of the present invention is applied to the paper splicing device of the web-fed rotary printing press, but the present invention is not limited to this. The present invention can be applied to any material as long as it joins a web of a long paper or film wound in a roll shape.

[0034]

As described above in detail with reference to the embodiments, according to the web joining apparatus of the present invention, the web for joining the running first web and the second web wound in a roll shape. In the joining device, a rotatable pressing roller that presses the first web and the second web in a superposed state is provided so as to approach and separate from the second web, and the second web is provided.
Since it is swingably supported along the roll radial direction of the second web, even if the outer surface of the pressure contact roller is not parallel to the outer roll surface of the second web, the pressure contact roller does not move in the radial direction of the second web. The pressure contact roller moves to the second position by swinging along the
According to the outer surface of the roll of the web, the first web and the second web can be reliably joined by pressure-contacting the entire axial direction uniformly. As a result, the pressing force required for joining the webs can be obtained with a simple structure, and the quality can be improved and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of a paper splicing device of a paper wrapper printing machine to which a web bonding device according to a first embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view of a main part of a paper splicing device of a paper wrapper, showing a modified example of the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of essential parts of a paper splicing device of a paper wrapper, showing a modification of the first embodiment of the present invention.

FIG. 4 is a schematic view of a paper splicing device of a paper wrapper printing machine to which a web bonding device according to a second embodiment of the present invention is applied.

FIG. 5 is a cross-sectional view of essential parts of a paper splicing device of a paper wrapper printing press according to a second embodiment.

FIG. 6 is a cross-sectional view of essential parts of a paper splicing device of a paper wrapper showing a modification of the second embodiment of the present invention.

FIG. 7 is a schematic view of a paper splicing device of a conventional web-fed rotary printing press.

FIG. 8 is a sectional view of a main part of a conventional paper splicing device.

[Explanation of symbols]

 11,12 Frame 23 Rotating shaft 24,25 Actuating lever 28 Bearing shaft 29,30 Bearing 31 Pressure contact roller 32,33 Air cylinder 34,35 Cylinder rod 43,44 Bearing 45,46 Spherical bearing unit 51,52 Bearing shaft 55,56 Aligning bearing 61,62 Bearing shaft 63,64 Aligning bearing 71,72 Linear motion guide 75,76 Knuckle joint 81 Knuckle joint 82 Swing frame

Claims (1)

[Claims] 1. A web joining apparatus for joining a traveling first web and a second web wound in a roll shape, wherein a rotatable press contact roller presses the first web against the second web. Is provided so as to be able to move toward and away from the second web, and is supported to be swingable along the roll radial direction of the second web.