JPH0342080Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention a. Field of Industrial Application The present invention relates to a horizontal movement device for the position of a rectifying roll in a stock inlet for a paper machine.

b. Conventional technology and its problems a. In the conventional double eccentric plate type without a drive device, adjustment of the rectifying roll is done by stopping the machine and loosening the bolts that clamp the eccentric plate.

Next, the main eccentric plate and the child eccentric plate are struck alternately little by little with a hammer, and the driving side and the operating side are rotated at the same time while looking at the movement scale, and the rectifying roll is moved to the desired position.

The structure is such that the bolts holding the clamp are then tightened.

However, the following problems can be pointed out with this method.

To make adjustments, the paper machine must be stopped for reasons such as the space is narrow, the rotating rectifying roll is dangerous, the stock liquid will leak if the clamp is loosened, and the gap between the rectifying roll and the slicing body changes. Otherwise, losses will occur.

Further, it is not possible to make adjustments while observing changes in the quality of the wet paper.

In order to move the drive side and operation side at the same time,
Names are necessary and take time and manpower.

Since the drive side and the operation side are operated by separate people,
If you do not move them in the same way at the same time, there is a risk that the rectifying rolls will become slanted and deformed.

The parent eccentric plate and child eccentric plate can be rotated independently of each other, so if the parent eccentric plate or child eccentric plate alone is rotated too much, the straightening roll will hit the lower frame or slice body of the stock inlet, causing damage. be attached or deformed.

(b) Others have the following structure.

That is, the slice body and the straightening roll are connected by the cam plate and the trochanter, and when the slice body is moved, the straightening roll follows along the guide member, and the connecting shaft for attaching the cam plate is connected to the locking member. Therefore, since it is fixed to the slide member, in order to move the slice body up or down, unlock this lock member and use the operating member.
Adjust the slice body.

However, even in this case, the following problems can be pointed out.

Problems A, B, and A of the conventional double eccentric plate system without a drive device are solved, but in order for the rectifier roll to move horizontally using only a guide, it is necessary to install a rectifier in the side frame of the stock inlet. As long as the roll is movable,
I have to open a gap.

This is contrary to the main purpose of the stock inlet, which is to eliminate as many irregularities on the inner surface as possible in order to prevent fiber agglomeration and feed the paper stock uniformly. It also eliminates the advantage of being

B. Structure of the invention a Means for solving the problem The present application attempts to solve the above-mentioned problem with the following structure.

In other words, the advantage of the present invention is that the inner surface of the stock inlet of the conventional double eccentric plate is flat, and the rectifying roll can be moved to any position.
Leave it as it is, fit the child eccentric plate to the parent eccentric plate at a position offset from the center of the child eccentric plate, attach a rectifying roll to this child eccentric plate at a position offset from the center of the child eccentric plate, and then An internal gear centered around the core of the secondary eccentric plate is fixed, an external gear centered around the core of the secondary eccentric plate is fixed to the secondary eccentric plate, and the gear slides vertically between the internal gear and external gear. A drive gear with a flexible bearing is provided, and this drive gear is rotated by a motor or the like through a universal joint to rotate the parent eccentric plate and the child eccentric plate at the same time and in opposite directions. The structure is such that the rectifying roll attached to the eccentric plate at a position offset from the center can be moved to any position in the horizontal direction.

b Example of implementation of the idea In the drawing, 1 is a stock inlet.

Reference numeral 2 denotes a slice body, and depending on the type of paper, the slice body 2 is moved vertically and horizontally using worm jacks 13 and 14 to adjust the lip opening degree.

3 is a lower lip which forms a stock liquid flow path 6 between it and the slice body 2.

Reference numeral 5 denotes a straightening roll, which is attached to the child eccentric plate 9 at a core B of the child eccentric plate 9 at a position offset from the center A, and maintains a gap between the lower frame 4 and the slice body 2 to prevent agglomeration of paper fibers. It is a hollow rotating perforated roll that smooths out the speed gradient.

7 is an upper lip.

Reference numeral 9 designates a child eccentric plate, which is fitted into the parent eccentric plate 8 at a position center A that is offset from the center C of the parent eccentric plate 8.

Reference numeral 10 denotes an internal gear, which is fixed to the parent eccentric plate 8 with the same core as the core A of the child eccentric plate 9.

12 is a drive gear located between the internal gear 10 and the external gear 11, and a bearing 1 that is slidable in the vertical direction.
It is supported by 5.

This drive gear 12 is a universal joint 1
It is rotated by a motor via 8.

When the drive gear 12 is rotated, the external gear 11 and the internal gear 10 that mesh with the drive gear rotate in opposite directions.

In other words, the parent eccentric plate 8 and the child eccentric plate 9 fixed to the gear rotate in opposite directions.

By placing the core of the internal gear and the core of the external gear in the same position, that is, the core of the child eccentric plate, the distance between the internal gear and external gear remains constant no matter where the parent eccentric plate and child eccentric plate rotate. The drive gear will move up and down, but will not come out of mesh.

In addition to the above, as shown in Fig. 5, the same movement can be achieved by replacing the external gear and internal gear with an external roller chain 11A and an internal roller chain 10A, and by replacing the drive gear with a chain sprocket 12A. Obtainable.

In addition, as shown in FIG. 6, an external gear 10 and an internal gear 11
The eccentric plate can be rotated by the drive sprocket 12B and the roller chain 16 by replacing it with chain sprockets 10B and 11B.

In this case, the idler sprocket 17 must be tensioned with a spring or the like so that it can be moved up and down.

c Effect In Fig. 4, L1 is the pitch circle radius of the internal gear fixed to the parent eccentric plate, L2 is the distance between the core of the parent eccentric plate and the core of the child eccentric plate, and L3 is the center of the child eccentric plate and the straightening roll. , L4 is the pitch circle radius of the drive gear, and L5 is the distance between the center A of the child eccentric plate and the center D of the drive gear.

Angle is expressed in radians Now, the driving gear is set at an angle α
When the parent eccentric plate is rotated to the right by α×L4, the parent eccentric plate is rotated to the right and the child eccentric plate is rotated to the left by α×L4.

When the parent eccentric plate rotates, the core A of the child eccentric plate
is rotated by θ2 around the center C of the parent eccentric plate.
Move to A′.

In other words, the core of the external gear and the core of the internal gear move A'. Due to this movement of the core, the core D of the driving gear is guided by the bearing that can slide in the vertical direction.
Go up to D′.

When the internal gear rotates from E to E', A'-D' and A
When the angle with -D is θ1, and the angle between A'-D' and A'-E' is θ3, the relationship between α and θ1 and θ2 is expressed by the following equation.

L4×α=L4×θ1+L1×θ3 ……(1) θ3=θ2−θ1 ……(2) L2sinθ2=L5sinθ1 ……(3) Substituting equation (2) into equation (1), L4×α=L4 ×θ1+L1 (θ2−θ1) ...(4) From equation (3), θ2=sin ^-1 (L5/L2×sinθ1) ...(5) Substituting equation (5) into equation (4), L4×α = L4 × θ1 + L1 × sin ^-1 (L5 / L2 × sin θ1) - L1 × θ1 ... (6) Next, let the position of the core after the movement of the rectifying roll be B', and the rotation angle of B'-A' be θ4. , when the pitch radius of the external gear is L6, the rotation of the parent eccentric plate to the right causes the external gear to rotate back to the right by θ1, and from the angle rotated by the drive gear θ1. External gear by the amount minus the angle,
In other words, the child eccentric plate rotates.

The relationship between θ4 and θ1 at this time is expressed by the following equation.

L4 × α = L4 × θ1 + L6 (θ4 + θ1) ... (7) From formulas (6) and (7), L6 (θ4 + θ1) = L1sin ^-1 (L5 / L2 + sinθ1) - L1 × θ1
From θ4=L1/L6sin ^-1 (L5/L2×sinθ1)−L1/L6×θ1−
θ1...(8) The relationship between θ1, θ2, and θ4 is expressed by equations (5) and (8), and the positions X and Y of B' are expressed by the following equation using θ2 and θ4. Ru.

X=L2sinθ2+L3sinθ4...(9) Y=L2cosθ2−L3cosθ4...(10) By changing L1, L2, L3, L4, and L6, the trajectory of the center B' of the rectifier roll can be changed to an upward slope, a downward slope, or an approximate horizontal line. Can be set arbitrarily.

C. Effects of the invention A: The position of the straightening roll can be adjusted without stopping the paper machine, so there is no loss of product or time due to stopping the paper machine.

(b) It becomes possible to adjust to the best position while observing changes in the quality of the wet paper.

C. Since the movement of the rectifying roll can be made on an approximately horizontal trajectory, there is no chance of the rectifying roll falling too far and hitting the lower frame of the stock inlet, causing damage or deformation.

D. The drive side and operation side are moved by their own motors, so by turning the motors on both sides at the same time with one switch, only one side can be moved.
The straightening roll will no longer become oblique and deformed.

Since it uses a double eccentric plate system, only a small gap is required to allow rotation, and the inner surface can be kept flat, so the fibers will not aggregate with this device.

By detecting the position of the slice body using a limit switch or the like and turning the drive gear, it is easily possible to automatically maintain the distance between the slice body and the rectifying roll.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main structure of the present invention, Fig. 2 is a vertical sectional view of the main structure, and Fig. 3 is a partially cutaway side view showing the arrangement of the components of the stock inlet. FIG. 4 is an explanatory diagram showing the movement, FIG. 5 is a front view of main parts showing another embodiment, and FIG. 6 is an explanatory diagram showing the movement of another embodiment. 1...Stock inlet, 2...Slice body, 3...Lower lip, 4...Lower frame, 5
... Rectifier roll, 6 ... Stock liquid channel, 7 ... Upper lip, 8 ... Main eccentric plate, 9 ... Child eccentric plate, 10 ... Internal gear, 11 ... External gear, 12 ...
Drive gear, 13, 14... Worm jack, 1
5...Bearing.

Claims (1)

[Scope of utility model registration request] A stock inlet is a stock inlet in which a stock liquid flow path is formed by a slice body and a lower lip provided below the slice body, and a straightening roll is arranged at the inlet of the paper stock liquid flow path. A child eccentric plate is fitted into the parent eccentric plate of the double eccentric plate at a position offset from the center of the parent eccentric plate, a rectifying roll is attached to this child eccentric plate at a position offset from the center of the child eccentric plate, and further, An internal gear whose core is the core of the child eccentric plate is fixed to this parent eccentric plate, an external gear whose core is the core of the child eccentric plate is fixed to the child eccentric plate, and between the internal gear and the external gear, A driving gear with a bearing that can slide vertically is arranged, and by rotating this driving gear, the parent eccentric plate and the child eccentric plate can be rotated simultaneously and in opposite directions, automatically without stopping the paper machine. A straightening roll position horizontal movement device in a stock inlet for a paper machine, characterized in that the straightening roll can be moved to any horizontal position at any time by operation.