JP5061133B2 - Suction roll - Google Patents

Description

The present invention is used for supplying continuous paper (film forming coated paper) in a rotary press and a coating machine, and relates to a suction roll that sucks and conveys a conveyed product.In particular, the suction width for the conveyed product can be easily changed, The present invention relates to a suction roll whose suction angle can be changed relatively easily.

In a rotary press, a method for transmitting a driving force to a conveyed product is generally a method in which a nip roll (rubber roll) is pressed against a feed roll (plated gold roll) and the conveyed product is sandwiched between both rolls. Recently, there is a strong demand for improved quality and faster productivity. And it is shifting to the suction roll which dislikes the contact to an application surface from the request | requirement of a clean environment, and transmits a driving force by suction.

Conventionally, many types of suction rolls have been used. Among them, the combination of a fixed inner cylinder and a rotating outer cylinder is used in a great many fields. For example, Patent Document 1 describes a typical example of a suction roll.

As shown in FIGS. 5 and 6, the suction roll 110 described in Patent Document 1 includes a cylindrical inner cylinder 120 having hollow fixed shafts 131 and 132 at both ends, and two fixed shafts 131 and 132. An outer cylinder 150 provided rotatably on the outside via bearings 141 and 142 and an adjustment shaft 170 provided rotatably on the inner side of the inner cylinder 120 are provided.

The outer cylinder 150 is provided with a gas suction part 155 through which gas flows over the entire circumference of the cylindrical wall. Side flanges 151 and 152 are provided at both ends of the outer cylinder 150, and both ends are closed and bearings 141 and 142 are attached. Further, the side flange 152 includes a drive shaft 154.

  The inner cylinder 120 is formed with its outer surface close to the inner surface of the outer cylinder 150, and includes a guide hole 123 along the axial direction. As a result, a suction region 161 is formed in which air can flow through the inside and outside of the cylindrical wall. The guide hole 123 has a substantially uniform cross section, and the angle formed by connecting the shaft core and the guide hole 123 is the suction angle θ.

  The adjustment shaft 170 includes screw parts 171 and 172 having male screws formed on both end sides except for the central part, and the screw parts 171 and 172 each have a sealing member 181 in which a female screw is formed. , 182. The seal members 181 and 182 are formed so that the outer peripheral surfaces thereof are close to the inner surface of the inner cylinder 120, and the portions corresponding to the guide holes 123 are expanded in diameter to be close to the inner surface of the outer cylinder 150.

  The screw portions 171 and 172 are formed as reverse screws. Therefore, when the adjustment shaft 170 is rotated from the outside, the seal members 181 and 182 are brought close to or away from each other, so that the suction width w of the suction region 161 can be changed.

Further, the adjusting shaft 170 includes a cylindrical suction tube 175 at the center thereof. An opening 176 that communicates the inside and the outside is formed in the cylindrical wall of the suction tube 175, and a gas suction path 177 that connects the suction tube 175 and the hollow fixed shaft 131 is formed with the screw portion 171 being hollow.

When this suction roll 110 is used, both the fixed shafts 131 and 132 are attached to a fixed frame or the like, and the drive shaft 154 is rotated by a separately provided drive source. At the same time, the fixed shaft 131 is connected to a decompression source such as a vacuum pump, and the space between the seal members 181 and 182 in the suction region 161 is reduced through the suction pipe 175. Accordingly, the conveyed product can be sucked and conveyed around the outer cylinder 150.

If the suction width w is desired to be changed by changing the conveyed product or the like, it can be adjusted by rotating the adjustment shaft 170 and sliding the seal members 181 and 182.

However, the suction roll 110 has a drawback that although the suction width w can be changed, the suction angle θ cannot be changed, and the suction roll cannot be made highly versatile.

Japanese Patent Laid-Open No. 7-127631

Accordingly, an object of the present invention is to provide a suction roll in which the suction width w can be freely changed and the suction angle θ can be changed. And it is providing the highly versatile suction roll which can respond to the change of a conveyed product, or the change of the machine to be used by simple adjustment.

In order to solve the above-mentioned problem, a suction roll according to claim 1 of the present invention is rotated through a cylindrical inner cylinder having hollow fixed shafts at both ends and bearings on both outer sides of the fixed shafts. A suction roll comprising an outer cylinder that can be provided and an adjustment shaft that is rotatably provided inside the inner cylinder, wherein the outer cylinder has a gas suction portion through which gas flows around the entire circumference of the cylindrical wall. The inner cylinder includes a plurality of replaceable suction angle blocks that seal the space between the outer cylinder in the axial direction on the outer surface of the cylindrical wall, and forms a suction region between the suction angle blocks and a plurality of types of suction angle blocks . A suction wall can be formed, and the cylindrical wall of the inner cylinder includes a plurality of suction holes communicating with the inside and the outside of the suction region, and means for closing unnecessary suction holes according to the suction angle with a seal sheet. It provided further along the axis from the opposite ends The adjustment shaft includes a screw portion having a male screw formed at a position corresponding to the both guide holes, and the both screw portions include nuts that are screwed into the screw shaft. the nut, replaceable seal member in accordance with the suction angle with sealing the front Symbol inner tube between the outer tube in the circumferential direction, attached through the guide hole, and rotating the adjusting shaft from the outside By changing the distance between the two seal members, a means is adopted that makes it possible to change the suction width of the suction region.

A suction roll according to a second aspect of the present invention is the suction roll according to the first aspect, wherein the adjustment shaft includes a cylindrical suction pipe at a central portion thereof, and is provided on a cylindrical wall of the suction pipe. An opening that communicates the inside and the outside is formed, and a gas suction path is formed by making one of the screw portions hollow. A suction roll according to claim 3 of the present invention is the suction roll according to claim 1 or 2, wherein the outer cylinder includes a drive shaft on one side, and the drive shaft includes a decompression block. The decompression block employs means that communicates with the suction pipe via the one fixed shaft and the gas suction path.

In the suction roll of the present invention, the suction angle θ is determined by the suction angle block attached in parallel to the outer surface of the inner cylinder. The suction angle block can be exchanged, and the suction angle θ can be freely changed by changing the number of attachments, the attachment position, and the like. In addition, the shape of the seal member that adjusts the suction width w needs to be changed along with the change of the suction angle block, but the seal member can also be easily changed.

Therefore, the suction roll of the present invention can be a suction roll that can freely change the suction width w and can change the suction angle θ by exchanging small parts. And it can respond to the change of a conveyed product, or the change of a machine by parts replacement | exchange or parts adjustment, and it can be set as a highly versatile suction roll.

It is a schematic whole sectional view showing an example of the suction roll of the present invention. It is a schematic sectional drawing of AA arrow view of FIG. 1, BB arrow view, CC arrow view, and DD arrow view. It is a schematic perspective view which shows an inner cylinder and a sealing member. It is a schematic sectional drawing which shows the other example of an inner cylinder and a sealing member. It is a schematic whole sectional view showing an example of the conventional suction roll. It is a schematic sectional drawing of the XX arrow of FIG.

Hereinafter, the present invention will be described with reference to examples shown in the drawings. However, these drawings do not limit the present invention. FIG. 1 is a schematic cross-sectional view of the suction roll 10 of the present invention, and FIG. 2 is a schematic cross-sectional view taken along arrows in FIG. FIG. 3 is a schematic perspective view showing the seal member 81 and the like attached to the outer surface of the inner cylinder 20.

The suction roll 10 of the present invention includes a cylindrical inner cylinder 20 having hollow fixed shafts 31 and 32 at both ends, and a bearing 41 on both outer sides of the fixed shafts 31 and 32, similarly to the suction roll 110 described above. The outer cylinder 50 provided rotatably via 42 and the adjusting shaft 70 provided rotatably inside the inner cylinder 20 are provided.

The outer cylinder 50 is provided with a gas suction part 55 through which gas flows, except for both ends, over the entire circumference of the cylindrical wall. The gas suction part 55 can be formed by drilling a large number of holes 56 in a cylindrical wall. In order to make the suction force to the conveyed product uniform, the outer peripheral surface of the outer cylinder 50 having a large number of holes 56 having a diameter of about 1 to 5 mm may be covered with a nickel mesh sleeve having a ventilation structure. preferable. The length of this gas suction part 55 becomes the maximum value of the adsorption width w with respect to the conveyed product.

Side flanges 51 and 52 are provided at both ends of the outer cylinder 50, and both ends are closed and bearings 41 and 42 are attached. Further, a drive shaft 54 is attached to the side flange 51 and can be driven by attaching a pulley 43 or the like.

  The inner cylinder 20 includes two exchangeable suction angle blocks 63 and 64 that seal the space between the outer cylinder 50 and the outer cylinder 50 on the outer surface of the cylindrical wall. A suction region 61 is provided between the suction angle blocks 63 and 64. Forming. That is, two opposing side surfaces of the suction angle blocks 63 and 64 form a suction region 61 inside thereof, and an angle formed by connecting with the axis of the inner cylinder 20 is the suction angle θ.

  The cylindrical wall of the inner cylinder 20 includes a plurality of suction holes 22 that communicate with the suction area 61 inside and outside, and guide holes 23 and 24 that communicate with the inside and outside along the axis from both ends thereof, and a seal member 81 described later. , 82 is guided as it slides along the axis.

The adjustment shaft 70 includes screw portions 71 and 72 in which male screws are formed at positions corresponding to the guide holes 23 and 24. And the external thread formed in the screw parts 71 and 72 is mutually formed as a reverse thread. Moreover, both the screw parts 71 and 72 are provided with nuts 73 and 74 provided with female threads that are screwed into the screw parts 71 and 72, respectively. One end of the adjustment shaft 70 is extended from the fixed shaft 32 to the outside of the machine, and can be rotated manually or automatically from the outside of the machine.

  Both nuts 73 and 74 are attached with slide bushes 75 and 76 that slide in the inner cylinder 20, and the slide bushes 75 and 76 seal between the inner cylinder 20 and the outer cylinder 50 in the circumferential direction. Replaceable seal members 81, 82 are attached through the guide holes 23, 24. Therefore, the distance between the seal members 81 and 82 is the axial length of the suction region 61, that is, the suction width w.

As shown in FIG. 3, a shallow groove is formed along the axis on the outer surface of the inner cylinder 20, and suction angle blocks 63 and 64 are fitted into the groove and fixed with screws. Further, three guide holes 23, 23, 23 are formed between the suction angle blocks 63, 64 along the axis, and the suction hole 22 is formed between them.

T-shaped seal members 81, 81, 81 are inserted into the three guide holes 23, 23, 23, respectively, and are fixed to the slide bushes in the inner cylinder 20 with screws. Thus, by dividing the seal member 81, manufacture, attachment, and replacement can be facilitated.

When the adjustment shaft 70 is rotated from the outside of the machine, the seal members 81 and 82 are guided by the guide holes 23 and 24. Therefore, the nuts 73 and 74 cannot rotate in the circumferential direction but slide in the axial direction. . That is, when the adjustment shaft 70 is rotated, the seal members 81 and 82 approach or separate from each other, so that the suction width w is adjusted.

The suction roll 10 of the present invention is characterized in that the suction region 61 is formed using the replaceable suction angle blocks 63 and 64 and the replaceable seal member 81. In other words, this makes it possible to adjust the suction width w and easily change the suction angle θ.

For example, the suction angle θ can be selected by forming the inner cylinder 20 in a state where three or more suction angle blocks can be attached, and selecting two appropriate suction intervals to attach two suction angle blocks.

A more preferable means for changing the suction angle θ will be described with reference to FIG.
FIG. 4 shows a case where four suction angle blocks 63a, 63b, 64a, 64b are attached to the inner cylinder 20. Guide holes 23a, 23b, and 23c are provided between the respective suction angle blocks.

FIG. 4A shows a case where the suction area 61 is defined between the suction angle blocks 63b and 64a. By attaching seal sheets 65 and 66 between the suction angle blocks 63a and 63b and between the suction angle blocks 64a and 64b, the suction holes 23a and 23c are closed. A narrow suction angle θ can be formed by attaching the seal member 81b between the suction angle blocks 63b and 64a.

FIG. 4B shows a case where the suction area 61 is defined between the suction angle blocks 63a and 64b. The seal sheets 65 and 66 are removed, and seal members 81a and 81c are attached here. As a result, a wide suction angle θ can be formed between the suction angle blocks 63a and 64b.

The suction angle blocks 63a, 63b, 64a, and 64b that determine the suction angle θ use parts having excellent sliding characteristics and use resin-based materials, so that they can be easily obtained and processed. And since it attaches to the surface of the inner cylinder 20 with a screw, attachment and replacement | exchange can be performed easily. Therefore, as shown in FIG. 4, the suction angle θ can be easily changed.

The adjustment shaft 70 includes a cylindrical suction tube 77 at the center thereof, and an opening 78 is formed in the cylindrical wall of the suction tube 77 to communicate the inside and the outside. Further, the gas suction path 79 is formed by making the screw portion 71 hollow.

The outer cylinder 50 includes a drive shaft 54 on one side, and the drive shaft 54 includes a decompression block 57 so that it can be connected to a decompression source such as a vacuum pump. The decompression block 57 communicates with the suction pipe 77 via the fixed shaft 31 and the gas suction path 79. Therefore, the suction region 61 can be decompressed via the inside of the suction pipe 77 by a vacuum pump or the like connected to the decompression block.

In this example, the gas suction path 79 is formed by making the screw portion 71 hollow, but it is also possible to reduce the pressure via the fixed shaft 32 by making the screw portion 72 hollow.

As described above, the suction roll 10 of the present invention has a low material cost due to a small number of parts, and can be manufactured at a low cost because of its simple structure.

10, 110 Suction rolls 20, 120 Inner cylinder 22 Suction holes 23, 24, 123 Guide holes 31, 32, 131, 132 Fixed shafts 41, 42, 141, 142 Bearing 43 Pulley 50, 150 Outer cylinders 51, 52, 151, 152 Side flanges 54, 154 Drive shaft 55, 155 Gas suction part 56 Hole 57 Decompression block 61, 161 Suction area 63, 64 Suction angle block 65, 66 Seal sheet 70, 170 Adjustment shaft 71, 72, 171, 172 Screw part 73 , 74 Nut 75, 76 Slide bush 77, 175 Suction pipe 78, 176 Opening 79, 177 Gas suction path 81, 82, 181, 182 Seal member

Claims (3)

A cylindrical inner cylinder having hollow fixed shafts at both ends;
An outer cylinder rotatably provided via a bearing on the outside of both the fixed shafts;
A suction roll provided with an adjustment shaft rotatably provided inside the inner cylinder,
The outer cylinder is provided with a gas suction portion through which gas flows over the entire circumference of the cylindrical wall,
The inner cylinder includes a plurality of replaceable suction angle blocks that seal the space between the outer cylinder in the axial direction on the outer surface of the cylindrical wall, and forms a suction region between the suction angle blocks and a plurality of types of suction angles. Can be formed ,
The cylindrical wall of the inner cylinder includes a plurality of suction holes communicating with the suction area inside and outside, and includes means for closing unnecessary suction holes with a seal sheet according to the suction angle, and further , from both ends thereof With a guide hole that communicates inside and outside along the axis,
The adjustment shaft includes a screw portion in which a male screw is formed at a position corresponding to the both guide holes, and the both screw portions include nuts that are screwed into the screw portion,
Wherein both the nut, the replaceable seal member in accordance with the suction angle with sealing the front Symbol inner tube between the outer tube in the circumferential direction, attached through the guide hole,
A suction roll characterized in that the suction width of the suction region can be changed by rotating the adjustment shaft from the outside to change the distance between both seal members. The adjustment shaft is provided with a cylindrical suction tube at the center thereof, and an opening communicating with the inside and outside of the cylindrical wall of the suction tube is formed, and a gas suction path is formed with one of the screw portions being hollow. The suction roll according to claim 1. The outer cylinder includes a drive shaft on one side, the drive shaft includes a pressure reducing block, and the pressure reducing block communicates with the suction pipe via the one fixed shaft and the gas suction path. The suction roll according to claim 2.

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