JP4828313B2 - Method and apparatus for grooving a press belt for papermaking - Google Patents

Description

  The present invention relates to a grooving method for a press member (hereinafter referred to as a press member) such as a papermaking press roll or a papermaking press belt used in a press part of a papermaking machine.

  Recently, as a press member used in a press part of a papermaking machine, a high-speed and high-pressure type, for example, a wide nip press described in Document 1 is mainstream, and a press member used for the press member is a document. 2 is formed, but in such a press member, since it is desired to have high durability and drainage, the core material of the foundation part and the woven structure are composed of a single yarn. Therefore, the type with enhanced durability is the mainstream.

  FIG. 10 is a cross-sectional view of a conventional press belt, particularly as a press member. The press belt has a polyurethane resin layer 14 formed on both sides of the base fabric 11. The base fabric 11 includes a belt running direction yarn 12 and a belt width direction yarn 13.

  Here, drainage grooves are generally formed in the press member. However, in FIG. 10, many drainage grooves 16 having a U-shaped cross section are provided on the felt-side surface 15 of the press member in the running direction of the press member. This drainage channel helps to drain the water squeezed out of the wet paper by the press.

  Conventionally, as a grooving device for a press member, a groove is formed by bringing a plurality of rotating disks into contact with the outer surface of a blanket (press belt) as in Reference 3.

JP 56-37395 A Utility model registration No. 3104830 JP-A-1-298292

  Conventionally, when a groove is formed in a press member as described above, a cutting blade having the same thickness as the groove width or a slightly narrower thickness is used, and the carriage is arranged in the outer surface width direction of the press member (hereinafter referred to as the member width direction). Move along and cut the entire surface. Cutting is performed while contacting and moving the surface of the press member in a spiral shape. The groove width is determined by the thickness of the cutting blade, and the interval between the grooves is determined by the position of the cutting blades, the relative moving speed of the grooving device in the member width direction, and the traveling speed of the press member. It was decided.

However, in such a conventional grooving method for a press member, a uniform groove (groove width, depth, groove interval) could not be cut along the width direction of the press member. This is because when a plurality of cutting blades are moved in parallel along the width direction of the member and the entire surface of the press belt is cut in contact with a spiral shape, the cutting blade on the leading side is placed on the surface of the press belt. This was based on the drawback that the groove shape (width and depth of the groove) differs from the cutting with the cutting blade on the side to be followed because of the strong pressing.
In particular, when the press member to be grooved is a press belt, the base portion has a woven structure, so it is considerably more flexible than a press roll whose core material is an iron core. Therefore, the groove shape (groove width, groove depth) ) Was extremely different.

  The present invention includes a carriage that can move in parallel with the member width direction of the press member, and a groove processing adjustment base that can move forward and backward in the direction of the member width direction of the press member on the carriage. In addition, a grooving device for cutting a helical groove in the member width direction of the press member, the groove processing adjustment base further includes an element that is eccentric in the perspective direction with respect to the member width direction of the press member, and the press member An element that is eccentric in the vertical direction with respect to the width direction of the member is provided with an element that can be adjusted in eccentric position, and a groove is cut on the outer surface of the press member on the groove processing adjustment table. And a guide member for enabling the grooving device to move parallel to the member width direction of the press member, while moving the carriage in parallel to the member width direction of the press member, The cutting blade is used to Using groove switching device for cutting down grooves, it has solved the problems by a groove switching method papermaking press member.

  Further, in the present invention, since the guide member is composed of two pivotable wheels that are pivotally supported, when the grooving adjustment base is advanced in the perspective direction, the grooving adjustment base is positioned in parallel with the press member. can do.

Furthermore, in the present invention, the cutting blade is arranged between the two wheels and is composed of a plurality of rotatable disc-shaped cutting blades that are pivotally supported, so that a plurality of grooves can be cut simultaneously and uniformly. it can.
In addition, this invention specifies the method and apparatus about a press belt among press members.

According to the present invention, even when the press member is a flexible press belt, in the grooving with a plurality of cutting blades, the cutting blade on the leading side and the cutting blade on the following side are at the same pressure. Since it can be pressed against the surface of the press belt, there is an effect that a uniform groove shape (width and depth of the groove) can be obtained.

First, a preferred embodiment of the present invention will be briefly described with reference to the drawings.
FIG. 1 is a plan view showing a main part of a grooving apparatus used in the present invention. The main part is used by being mounted on the groove processing adjustment base B as shown in the three-dimensional view of FIG. In the figure, 1 is a disk-shaped cutting blade, 2 is a wheel, and two same-shaped ones are attached on the same axis. The plurality of cutting blades 1 are disposed between the two wheels 2 and are rotated by the power of the drive motor 3.
In addition, below, it demonstrates as a press member including not only the press belt specified by this invention but a press roll.

  FIG. 7 is a plan view showing a position where the groove processing adjustment base B is moved backward in the perspective direction with respect to the press belt PB placed on the press roll R or the tension roll R1 which is a press member to be grooved.

  FIG. 8 shows the press belt PB, which is a press member to be grooved, or the press belt PB covered with the tension roll R1. It is a top view just before grooving is performed along the member width direction by performing grooving while moving in parallel from left to right in the drawing.

  FIG. 9 is a side view showing the height positional relationship between the grooving device used in the present invention and the tension roll R1 and the tension roll R2 covered with the press belt PB which is a press member to be grooved.

Further, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, the groove processing adjustment base B is mounted on the carriage F. The carriage F that can move parallel to the member width direction can move on the rail 6 parallel to the member width direction. Further, the groove processing adjusting table B can be moved forward and backward in the perspective direction with respect to the member width direction on the rail 4 provided on the carriage F and perpendicular to the member width direction.

  The grooving adjustment base B includes a guide member composed of two freely rotatable wheels 2, a plurality (four in FIG. 1) of disc-shaped cutting blades 1 disposed between the wheels 2, and the cutting blades 1 It consists of a motor M that drives. The motor M drives the cutting blade 1, but does not drive the guide member, and both are configured to be rotatable.

  The rotation axis of the wheel 2 substantially coincides with the rotation axis of the cutting blade 1 but is not connected to each other, so that the wheel 2 can be rotated by contact with a press member to be grooved.

  The tip of the cutting blade 1 is set to be closer to the press member than the tip of the wheel 2. When the groove is cut after the wheel 2 is brought into contact with the surface of the press member to be cut, the groove is cut at a depth corresponding to the difference in distance from the press member.

  As the cutting blade 1 that can be used in the present invention, it is preferable to use a disk-shaped cutting saw blade. Further, such a disc-shaped cutting saw blade can be arranged at an inclination angle as disclosed in Japanese Patent Application Laid-Open No. 2004-17172 to reduce cutting resistance and perform cutting at high speed.

  FIG. 2 is a plan view showing the center point P of the groove processing adjustment base B. FIG. 2 to 4 and FIG. 5, the main part of the grooving device is not shown except for the motor M. The groove processing adjustment base B includes an element that is eccentric in the perspective direction with respect to the member width direction. That is, the grooving adjustment stand B is rotatable so that the center point P can be decentered in the perspective direction with respect to the member width direction.

  FIG. 3 is a plan view decentered clockwise in the perspective direction with respect to the member width direction with the center point P as a fulcrum. In the drawing, when the cutting blade 1 is stationary with respect to the press member to be grooved, the tip of the cutting blade 1 acts on the surface of the press member with a stronger pressure when the cutting blade 1 is stationary. Position adjustment is possible.

  In contrast, FIG. 4 is a plan view decentered counterclockwise in the perspective direction with respect to the member width direction with the center point P as a fulcrum. In the figure, when the cutting blade 1 is stationary with respect to the press member to be grooved, the tip of the cutting blade 1 acts on the surface of the press member with a stronger pressure when the cutting blade 1 on the left side is pressed. Position adjustment is possible.

  In this way, while moving in parallel along the surface of the press member by decentering the groove processing adjustment base B counterclockwise or clockwise in the perspective direction with respect to the member width direction with the center point P as a fulcrum, When cutting the entire surface of the press member in contact with the helical shape, the cutting blade on the leading side and the cutting blade on the following side are always pressed with the same pressure when the cutting blade 1 is moving. Can be pressed against.

In FIG. 5, the groove processing adjustment base B is mounted on the carriage F via the height adjusting support shaft 5.
The support shafts 5 are arranged at the four corners on the carriage F, and play a role of adjusting the height position of the press member to be grooved and a role (element) of decentering in the vertical direction with respect to the member width direction. ing.

  FIG. 6 is a plan view in which the right side of the groove processing adjustment base B is decentered upward in the member width direction. Or conversely, the grooving adjustment base B can be decentered upward in the left direction with respect to the member width direction.

  In this way, the groove processing adjusting base B is eccentric in the right or left side with respect to the member width direction so as to move in parallel along the surface of the press member, and in contact with the spiral shape, the entire surface of the press member Since the angle of the cutting blade 1 with respect to the press member can be adjusted, the cutting blade on the leading side and the cutting blade on the following side always have the same pressing force when the cutting blade is moving. Can be pressed against the surface of the press member.

  FIG. 7 shows that a groove adjusting base B is arranged at one end (left end in the figure) in the member width direction with respect to a press belt PB placed on a press roll R or a tension roll R1 which is a press member to be grooved. However, it is in a position reversely moved in the perspective direction with respect to the member width direction. This position is the position at which grooving is started with respect to the press member of the grooving apparatus used in the present invention (or the right end may be the grooving start position).

  When grooving, first, the height of the press member to be grooved is adjusted with respect to the grooving adjustment base B, and at the same time, the height is offset with respect to the press member in the vertical direction so that the angle of the cutting blade 1 with respect to the press member is increased. adjust.

  Next, the groove processing adjustment base B is advanced in the perspective direction on the rail 4 perpendicular to the member width direction, and is advanced until the tip of the wheel 2 comes into contact with the surface of the press member to be grooved. Here, the center point P is decentered in the perspective direction with respect to the member width direction as a fulcrum, and the entire surface of the press member is cut in contact with the spiral while moving in parallel along the surface of the press member. When the blade is moving, adjustment is performed so that the cutting blade on the leading side and the cutting blade on the following side always press against the surface of the press member with the same pressure.

  FIG. 8 shows a carriage table after a grooving adjustment base B advances in the perspective direction and contacts the surface of the press member with respect to the press belt PB covered with the press roll R or the tension roll R1 which is a press member to be grooved. Shows that the groove G is machined while moving from the left to the right in the figure, and is still at the position immediately before the groove machining is finished. In FIG. 8, the tip of the wheel 2 is still in contact with the press member on the surface of the press member to be grooved. Thereafter, the grooving adjustment base B moves backward on the rail 4 perpendicular to the member width direction to move away from the surface of the press member, and at the same time, stops the rotation of the cutting blade 1 and the motor M to perform grooving. Ends.

  FIG. 9 shows the positional relationship between the height of the grooving device used in the present invention and the tension roll R1 and tension roll R2 covered with the press belt PB, which is a press member to be grooved. Is stretched between the tension roll R1 and the tension roll R2 and travels in the direction of the arrow by driving the tension roll R1 and the tension roll R2, but may travel in the opposite direction. The grooving adjustment base B moves forward and backward toward the press belt PB, the guide member (wheel 2) is in contact with the press belt PB, and grooving is performed by a cutting blade 1 (not shown).

The rotation direction of the wheel 2 coincides with the travel direction of the press belt PB, but the rotation direction of the cutting blade 1 can be set to the travel direction of the press belt PB or the opposite direction.
Since the supporting shafts 5 for height adjustment are provided at the upper and lower corners of the carriage B (the lower four corners of the groove adjustment table B), the groove adjustment table B is eccentric in the vertical and horizontal directions in the figure, Position adjustment is possible.

The top view which shows the principal part of the grooving apparatus used for this invention. The top view which shows the center point of the groove processing adjustment stand of the grooving apparatus used for this invention. The another top view which shows the center point of the groove processing adjustment stand of the grooving apparatus used for this invention. The further another top view which shows the center point of the groove processing adjustment stand of the grooving apparatus used for this invention. The solid view of the grooving apparatus used for this invention. The another three-dimensional view of the grooving apparatus used for this invention. The top view which shows embodiment of this invention. The another top view which shows embodiment of this invention. The side view which shows embodiment of this invention. Sectional drawing of the conventional press belt.

Explanation of symbols

1: Cutting blade 2: Wheel (guide member)
3: Drive motor M
4: Rail perpendicular to member width direction 5: Support shaft 6: Rail parallel to member width direction
B: Grooving adjustment table F: Reciprocating table G: Groove P: Center point of groove processing adjustment table PB: Press belt R: Press roll R1, R2: Tension roll

Claims (3)

A movable carriage parallel to the outer surface width direction of the press belt for papermaking, advancing towards and away with respect to the outer surface width direction of the papermaking press belt on said carriage, and a reverse capable grooving adjustment base A grooving device for cutting a helical groove in the outer surface width direction of the papermaking press belt , wherein the groove processing adjusting table is further in a perspective direction with respect to the outer surface width direction of the papermaking press belt. An eccentric position adjustable element having at least one of an eccentric element and an element that is eccentric in the vertical direction with respect to the outer surface width direction of the papermaking press belt , and on the groove processing adjustment table is a cutting edge for cutting a groove in the outer surface of the press belt the papermaking, a guide member for allowing movement parallel grooves switching device to the outer surface width direction of the press belt the papermaking is disposed ,round trip While moving in parallel to the outer surface width direction of the press belt the papermaking and cutting blades by using the groove switching device for cutting the spiral groove in the outer surface width direction of the press belt the papermaking, the groove of the papermaking press belt How to cut. A reciprocating table movable parallel to the outer surface width direction of the papermaking press belt, and a groove processing adjusting table capable of moving forward and backward on the reciprocating table with respect to the outer surface width direction of the papermaking press belt. A grooving device for cutting a helical groove in the outer surface width direction of the papermaking press belt, wherein the groove processing adjusting table is further in a perspective direction with respect to the outer surface width direction of the papermaking press belt. An eccentric position adjustable element having at least one of an eccentric element and an element that is eccentric in the vertical direction with respect to the outer surface width direction of the papermaking press belt, and on the groove processing adjustment table Is provided with a cutting blade for cutting a groove on the outer surface of the papermaking press belt, and a guide member for enabling the grooving device to move in parallel with the width direction of the outer surface of the papermaking press belt. ,round trip While moving in parallel to the outer surface width direction of the press belt the papermaking and cutting spiral groove on the outer surface width direction of the press belt the papermaking by cutting edge, the groove switching device papermaking press belt. The guide member is composed of two rotatable wheels that are pivotally supported, and the cutting blade is disposed between the two wheels, and is composed of a plurality of disk-shaped cutting blades that are pivotally supported and freely rotate. Item 2. A grooving device for a papermaking press belt according to Item 2 .

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