JP2904980B2 - Frame change method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for changing a winding frame in a winding machine, and more particularly to a method for winding a non-defective product without taking much time for winding a new spool when changing the frame. In a stable manner.

[0002]

2. Description of the Related Art In a paper mill, various types of winding machines are used. For example, a paper machine for producing a base paper, a coater apparatus for applying a pigment coating liquid to produce a coated paper, Or, in the reel part of an on-machine coating type paper machine that manufactures coated paper by making paper and then applying a pigment coating liquid to the coated paper, a horizontal rail-type winding machine is used to wind the coated paper. Machine is mainly used.

When a frame is changed using this horizontal rail type winder (hereinafter simply referred to as a winder), for example, a new spool on a primary arm held at a standby position on a drum is replaced with a primary spool. A new spool is created by pressing the drum by operating the pressure contact device while slightly rotating the arm, and then cutting the continuously fed sheet, usually by ejecting an air jet from a paper cutting knife and nozzle. Wrapped around. Then, after rewinding the desired amount of winding on the old spool from the drum on the horizontal rail with the secondary arm, lowering the new spool on the horizontal rail with the primary arm,
The frame is changed by pressing the drum with the secondary arm.

However, the conventional frame changing method employs a method of cutting a continuously fed sheet by jetting an air jet from a paper cutting knife and a nozzle and winding the sheet around a new spool. As a result, the shape of the leading edge of the sheet is not constant every time the frame is changed, and the sheet cannot be cut well when the frame is replaced with a strong sheet, so the new spool is wound smoothly when winding around the new spool. There is a problem that is not performed.

[0005] Further, depending on the sheet, even if the sheet is wound at an angle, the sheet is immediately cut out. As a result, it takes time to change the frame, and the sheet is easily broken at the leading end of the sheet at the start of winding. was there. The fact that it takes a lot of time to change the sheet frame means that, for example, in the case of a paper machine, all sheets continuously sent from the previous process are removed during this time, so that the production efficiency of the product is considerably reduced. At the same time, there is a problem in that a large burden is imposed on a worker for processing a large number of defective sheets.

Further, the folding of the sheet at the leading end of the sheet at the beginning of winding causes defects such as blistering and wrinkles in the lower layer (lower winding) of the winding. Further, the sheet is likely to be broken near the center of the spool.
Then, since the sheets are wound one after another in a state of being stacked on the folded sheet to form a layer, the compressive force in the inward direction is increased at that portion, and the layer is easily crushed. Further, the mirror surface (so-called end surface) of the winding tends to have a chrysanthemum shape (also referred to as flower bloom, Star, or star shape) by the action of the compressive force.
Therefore, there is a problem that only winding having many defective portions that cannot be used as a product can be obtained.

[0007]

SUMMARY OF THE INVENTION The present invention provides a frame changing method which does not require much time for winding a new spool at the time of changing the frame, and which can stably wind a good product without any of the above-mentioned defects. Is what you do.

[0008]

According to the present invention, a new spool on an arm held at a standby position is brought into pressure contact with a drum,
Next, in a method of cutting a continuously sent sheet and winding the sheet around a new spool to change the frame, two sheets waiting for the center of the sheet after the new spool is pressed against the drum Cutting device cuts the sheet into parallel lines,
A double-sided adhesive label is stuck between these parallel lines, the sheet is transferred to the new spool by sticking to the surface of the new spool, and the cutting device is moved toward both side edges of the sheet to make the sheet triangular. This method is characterized by cutting the sheet into a new spool and winding the sheet around a new spool.

[0009]

The frame replacement method of the present invention will be described in more detail with reference to the drawings. FIG. 1 shows a cutting device (3) for cutting a sheet in parallel from the upstream side in the running direction of the sheet, above the sheet (2) just before entering the reel drum (1). The cutting device (3) and the double-sided adhesive label insertion device were provided in the moving means (5) so that the double-sided adhesive label insertion device (4) was formed, and the moving means was fixed to the frame part (6). It is a figure showing an example of a case.

The above cutting device (3) is composed of a rotary round blade (7) for cutting a sheet and a motor (8) for rotating the round blade. Two units are installed immediately upstream of the label insertion device. As shown in FIG. 2, the double-sided adhesive label inserting device (4) inserts the double-sided adhesive label (9) between the new spool (10) and the sheet supported on the reel drum, and holds the adhesive label. The lip portion (11) is fixed to the tip of a rod portion of an air cylinder (12) having a stroke for inserting an adhesive label between a new spool and a sheet. The air cylinder is fixed to a holder part (13), and the holder part is provided so as to be movable left and right by moving means. When inserting an adhesive label, as shown in FIG. Is moved to the center position of the sheet, and when the step of inserting the adhesive label is completed and the next adhesive label is received, as shown in FIG. 3, the double-sided adhesive label insertion device is moved to the left side edge of the sheet from the sheet central position. Move to a farther position.

The lip portion (11) is formed of, for example, a plate spring. The air cylinder is pushed by the lip portion to be expanded by a projection fixed to the outside, and the rod portion of the air cylinder is retracted. The opening / closing mechanism is closed, but of course, it is also possible to provide the lip portion itself with the function of opening / closing. In addition, the above-mentioned moving means
The rodless cylinder (5) serves the purpose of moving the cutting device at high speed toward both ends. However, the present invention is not limited to this embodiment, and any other means that can move the cutting device at high speed, such as a method of moving the cutting device using a guide rail, a chain, a wire, and the like, can be appropriately adopted. .

Further, since it is difficult to provide a function of supplying the next adhesive label in the main body of the double-sided adhesive label insertion device in terms of space, when the next adhesive label is received by the moving means, FIG. Is used to move the double-sided adhesive label insertion device from the center of the sheet to a position off the left side edge of the sheet, but supply the next adhesive label into the body of the double-sided adhesive label insertion device. Of course, this is not the case when there is sufficient space to provide the function to perform the function.

Next, as shown in FIG. 4, the double-sided pressure-sensitive adhesive label supply device (14) converts the pressure-sensitive adhesive sheet (16) having the configuration in which the pressure-sensitive adhesive label is sandwiched between two release sheets (15) as shown in FIG. Winding (17)
Then, the winding is attached to the feeding section (18) as shown in FIG. 6, the adhesive sheet is nipped by the feed roll (19), and a predetermined length is drawn. Next, the release sheet holding the adhesive label is simultaneously pulled in another direction by a separate roll (20) composed of two rolls, and the internal adhesive label is protruded. The release sheets are wound on separate reels (21).

Further, as shown in FIG. 3, the pressure-sensitive adhesive label held in a protruding state is operated by an air cylinder fixed to the double-sided pressure-sensitive adhesive label insertion device, and attached to the double-sided pressure-sensitive adhesive label insertion device, as shown in FIG. The lip portion comes into contact with the protruding projection, and the lip portion is further expanded by the pushing hand. Next, after the adhesive label is further extruded from the double-sided adhesive label supply device and inserted into the lip, the lip is closed by pulling the lip, and the adhesive label transfer process is completed by further pulling.

In the double-sided adhesive label supply device, when the adhesive label is exhausted, the next adhesive label comes out, while the double-sided adhesive label insertion device (4) is moved to the center of the sheet by the moving means (5). Be prepared for a frame change. At the time of frame change,
First, as shown in FIG. 7, the sheet (2) is cut into parallel lines,
An adhesive label (9) is attached between these parallel lines by a double-sided adhesive label inserting device, and after being attached to the surface of the new spool (10), the sheet is transferred to the new spool, and the rodless movement means is used. Using a cylinder, one is moved from the center toward the operating side (the right side in FIG. 1), and the other is moved at a high speed toward the driving side (the left side in FIG. 1), and the frame is moved. The replacement process is completed.

As described above, the constitution in which the adhesive label is attached between the parallel lines by the double-sided adhesive label insertion device and the leading end of the parallel line is cut off by attaching the adhesive label to the surface of the new spool is as follows. Suffices the function of cutting off the front end portion. However, in order to further increase the certainty of cutting the tip of the parallel line, as shown in FIG. 1, another cutting device (22) may be used, for example, a nozzle having a hole for ejecting an air jet at the tip. Is provided, and the front end of the sheet to which the adhesive label is attached is cut by ejecting an air jet. Further, as another applicable cutting device, a method of jetting a jet of high-pressure water or the like can be given.

Further, two round blades (7) are fixed, and
The effect of the present invention can be sufficiently obtained even if the sheet is cut into parallel lines with individual round blades or the sheet is cut into triangular shapes. If the angle of the cutting device is set, the sheet may be broken at the moment when the cutting edge of the cutting device is inserted, and the cutting device is moved from the center of the sheet to the sheet edge to cut the sheet into a triangular shape, If you cut the sheet,
The body at the rear part of the round blade biting pushes the sheet through, and as a result, the sheet cutting line becomes jagged, and the sheet may be broken starting from that part.

Accordingly, as shown in FIG. 1, an angle switching device (23) is provided so that the cutting edge is inserted in parallel with the flow direction of the sheet when cutting the sheet in a parallel line, and when the sheet is cut in a triangular shape. It is desirable to switch to an angle formed by the flow speed and the moving speed of the cutting device. As a specific example of the angle switching device, for example,
The round blade is fixed to the shaft of the drive motor, the drive motor is held by the holder (24), the holder is supported by a bearing so that it can rotate, and the holder is the rod of a small air cylinder (25). The air cylinder is not operated when the cutting edge is inserted in parallel with the flow direction of the sheet.However, when the sheet is cut into a triangular shape, the air cylinder is operated so that the holder part is swung and the round blade This is performed by switching the angle of the cutting edge. Note that the angle switching device is not limited to the above-described configuration, and any device having a structure in which the angle of the cutting edge of the round blade is switched to be used can be appropriately adopted.

The angle is calculated by the following equation.

[0020]

(Equation 1)

For example, if the speed of the sheet is 1000 m / min,
When the moving speed of the cutting device is 200 m / min, α is 2
2.6 °, and the angle of one blade is inclined by 11.3 °. The round blade (7) used in the cutting device has an appropriate cross-sectional shape, and the object of the present invention is achieved even when the blade is fixed to the holder at any angle. However, when using a double-edged round blade,
Since the body of the round blade comes into contact with the sheet when moving, which results in a large cause of breaking the sheet, it is preferable to use a blade with a single blade with a blade edge angle of about 5 to 30 ° and a slope of the blade edge. If the round blade of the cutting device is fixed so that the surface that is not oriented toward the side end side in the direction in which the cutting device moves, it is easy to always cut the sheet when cutting the sheet into a triangular shape. How to

When a single-edged round blade with a blade angle of 5 ° or less is used, the thickness of the blade becomes too thin.
Insufficient rigidity of the blade makes it impossible to cut the sheet normally. On the other hand, when using a round blade with a single blade with a blade edge angle of 30 ° or more, it is said that the sheet is pressed with the blade rather than cutting the sheet. The action becomes strong, and the sheet is broken.

Further, the cutting speed of the cutting device will be described in detail. The cutting speed greatly affects the sheet cutting ability. For example, when cutting a sheet on a desk, it is easy to fix the sheet and move the knife to cut the sheet, but it is difficult to fix the knife and move the sheet to cut the sheet. . Therefore, it is necessary to move the knife positively.

When the moving speed of the sheet is 1000 m / min and the round blade is rotated in the forward direction with respect to the running direction of the sheet, the speed difference becomes 0 when the peripheral speed of the round blade is 1000 m / min. It becomes difficult to cut the sheet. On the other hand, when the rotation of the round blade is rotated in the direction opposite to the running direction of the sheet, the speed ratio increases, but when the peripheral speed of the round blade is low, the partial load on the blade becomes excessive, while the sheet speed decreases. When the peripheral speed is higher than the peripheral speed of the blade, the above-mentioned knife is fixed and the sheet is moving, so that the cutting is not performed well.

Therefore, it is desirable that the peripheral speed of the round blade is as high as possible with respect to the sheet, and it is desirable that the rotational speed be equal to or higher than the traveling speed of the sheet without distinction between forward and reverse rotation. It is desirable that the protrusion amount of the blade with respect to the sheet, that is, the biting allowance is 1 mm or more. When the protruding amount of the blade with respect to the sheet is 1 mm or less, if a portion with a low tension in the flow direction of the sheet passes during cutting of the sheet, or if vibration occurs in the sheet, the blade edge of the round blade is This causes a problem that an uncut portion is generated at the cutting line of the sheet.

[0026]

According to the frame changing method of the present invention, a triangular sheet having a protruding end portion is always obtained, so that the winding of the sheet around the spool can be performed extremely smoothly. Therefore, since the winding of the sheet around the spool is completed in a minimum time, a large number of defective sheets are not generated.
Excellent production efficiency can be achieved, and the burden on workers is greatly reduced. In addition, since the occurrence of sheet breakage can be effectively prevented, it is possible to stably obtain a good-quality product having very few defective portions.
It is particularly effective when used for a sheet having a strong paper strength.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a cutting device for cutting a sheet into parallel lines, and a cutting device and a double-sided pressure-sensitive adhesive label insertion device serving as a main part of the present invention; It is a figure which shows one Example when provided and this moving means is fixed to the frame part.

FIG. 2 is a diagram schematically showing a double-sided adhesive label insertion device for inserting a double-sided adhesive label between a new spool and a sheet supported on a reel drum.

FIG. 3 is a diagram illustrating a state in which a double-sided pressure-sensitive adhesive label insertion device is moved from a central position of a sheet to a position separated from a left side edge of the sheet when the next pressure-sensitive adhesive label is received after the step of inserting the pressure-sensitive adhesive label is completed. It is a perspective view showing a process.

FIG. 4 is a diagram illustrating an example of an adhesive sheet having a configuration in which an adhesive label is sandwiched between two release sheets.

FIG. 5 is a diagram illustrating winding of an adhesive sheet having a configuration in which an adhesive label is sandwiched between two release sheets.

FIG. 6 shows a double-sided pressure-sensitive adhesive label supply device which squeezes out an internal pressure-sensitive adhesive label from a wound pressure-sensitive adhesive sheet having a configuration in which a pressure-sensitive adhesive label is sandwiched between two release sheets and supplies the pressure-sensitive adhesive label to a double-sided pressure-sensitive adhesive label insertion device It is a figure showing an outline.

FIG. 7 is a plan view illustrating a process of forming a triangular piece in which the leading end of the sheet is a convex piece when the frame is changed.

[Explanation of symbols]

 (1) Reel drum (2) Sheet (3) Cutting device for cutting sheets in parallel lines (4) Double-sided adhesive label insertion device (5) Moving means (6) Flame section (7) Rotating round blade (8) Motor (9) Double-sided adhesive label (10) New spool (11) Lip (12) Air cylinder (13) Holder (14) Double-sided adhesive label feeder (15) Release sheet (16) Adhesive sheet (17) Winding ( 18) Feeding part (19) Feed roll (20) Separate roll (21) Reel (22) Separate cutting device (nozzle) (23) Angle switching device (24) Holder (25) Air cylinder

──────────────────────────────────────────────────続 き Continuation of the front page (72) Mitsuo Yamamoto 5007 Itozakicho, Mihara-shi, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Mihara Works (56) References JP-A-3-200655 (JP, A) JP-A-63 -295354 (JP, A) JP-A-63-55026 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65H 19/28, 19/18

Claims (4)

(57) [Claims] 1. A method in which a new spool on an arm held at a standby position is brought into contact with a drum, a sheet continuously fed is cut, and the sheet is wound around the new spool to change a frame. After the new spool is brought into contact with the drum, the two cutting devices waiting at the center of the sheet,
Cut the sheet into parallel lines, apply a double-sided adhesive label between these parallel lines, stick it on the surface of the new spool, transfer the sheet to the new spool, and attach the cutting device to both side edges of the sheet. A frame changing method characterized by moving the sheet toward a triangle, cutting the sheet into a triangular shape, and winding the sheet around a new spool. 2. The method according to claim 1, wherein the double-sided adhesive label is attached between the parallel lines by a double-sided adhesive label insertion device. 3. The method according to claim 1, further comprising a double-sided adhesive label supply device for supplying the double-sided adhesive label to a double-sided adhesive label insertion device. 4. The frame changing method according to claim 1, wherein the front end of the sheet to which the double-sided adhesive label is attached is cut by a cutting device provided separately.