JPH0223637B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for passing the side edge of the paper product on the operation side by an air nozzle at the start of paper production or at the time of paper break, regardless of the size of the paper width in a steady state. The present invention relates to a paper passing method in a paper making process and an apparatus therefor, which can extremely easily carry out paper passing at an optimal position.

[General explanation of paper passing]

In the papermaking process, paper must be passed not only at the start of papermaking, but also when paper breaks during papermaking operation. A general explanation of paper passing in the paper making process will be explained below with reference to an explanatory diagram of the paper passing flow in an example of a paper machine shown in Fig. 3 and an enlarged explanatory diagram of the main part of section F in Fig. 3 shown in Fig. 4. .

The paper making process shown in FIG. 3 mainly consists of a wire part 1, a press part 2, a dryer part 3, a calendar part 4 and a reel part 5.
The dryer part 3 further includes a pre-dryer 3a,
It consists of a size press 3b and an after dryer 3c. Head box slices (not shown)
The paper stock dispersion supplied to wire part 1 is dehydrated as it travels through wire part 1, resulting in a wet paper with a concentration of approximately 20% (although the water content decreases further during the subsequent paper-making process). In the present invention, these are hereinafter referred to as paper products S regardless of the amount of moisture. Then, high-pressure water is jetted from trim nozzles 8 installed on both sides of the rear end of the wire part between the suction box 6 and couch roll 7 of the wire part 1 to cut both sides according to the paper width. As shown in FIG. 4, the portion Sa falls into the couch pit 9, and only the remaining paper material S, which has reached the paper width W, is moved to the downstream side by the suction action of the pick-up roll 10 whose suction width exactly matches the paper width W. It passes through center roll 11 and falls into couch pit 9. The width of this paper product S is too wide as it is, and it is impossible to pass it through press part 2 and below. Therefore, a mobile cutter that can move the cutting point in the width direction at a predetermined point in the papermaking process and stop at a predetermined position is used to pass the paper from the side edge on the operation side of the paper product formed by cutting with the trim nozzle 8. While cutting the paper strip into a narrow strip of a predetermined width suitable for the location where the operation is to be performed, an air nozzle is operated to blow the paper strip downstream with the air flow and introduce it into a predetermined path. Make it run. Next, when the movable cutter is moved to the drive side while it is still in the operating state of cutting the paper material, the width of the paper forming band for paper passing is expanded to the side edge of the drive side, and becomes the predetermined paper width, i.e. The paper S has been passed, and the paper passing is completed by further moving the movable cutter to a standby position outside the maximum width range on the drive side and waiting.

In this way, there are usually two predetermined locations where the paper material S is cut using the mobile cutting machine, and there are two different types of mobile cutting machines for each location. Hereinafter, a detailed explanation will be given along with a specific paper passing method.

Of the above specified locations, one is shown in Figures 3 and 4.
As shown in the figure, the traveler nozzle 13 is located at almost the same location as the trim nozzle 8, and serves as a moving cutting machine that jets high-pressure water to cut both sides Sa of the paper material S.
is used. As mentioned above, the trim nozzle 8
The paper product S, which is just cut on both sides at 5% wider, but to simplify the description, they are expressed by the same paper width W), but
A predetermined width from the side edge formed by the traveler nozzle 13 and the cut made by the trim nozzle 8 on the operation side (hereinafter referred to as w ₁ , usually 30 to 50 mm)
When it is cut into a sheet-forming band Sb for paper passing, it passes through the pick-up roll 10 together with the drive side portion, reaches the center roll 11, and falls into the couch pit 9.
When the air nozzle 12 is actuated here, due to its positional relationship with the air nozzle 12 and its narrow width and light weight, only the paper strip Sb for paper passing is blown away to the flow side, and in the example shown in FIG. 3, it is first guided by the shute plate 14. The paper is then passed through the 3P roll 15, and the air nozzle 16 is further activated to pass the paper through the SM roll 17.
Two carrier ropes (not shown) run to transport the paper material from the entrance of the SM roll 17 to the exit of the 5D roll 20 at the rear end of the afterdryer 3c. Paper making band Sb for paper passing is SM roll 17
When the width of the paper band for paper passing reaches a predetermined width (hereinafter referred to as
w ₂ (usually 400 to 600 mm) and clamped between the two carrier ropes,
If everything goes well, the paper making band Sb for paper passing is the 4D roll 18 at the exit of the pre-dryer 3a, and the size press 3b.
It is conveyed to the 5D roll 20 at the exit of the after dryer 3c via the SP roll 19 at the exit. The conveyance is not smooth, and the paper belt Sb for paper passing is stuck in the pre-dryer 3a (between SM roll 17 and 4D cylinder 18).
If the paper falls from the running path, refeed it from the 3P roll 15, and if it falls from the size press 3b, use the air nozzle 2 at the outlet of the 4D cylinder 18.
In this case, in order to make it easier for the paper belt Sb to be blown away by the air nozzle 21, the traveler nozzle 13 is moved to the operation side and the paper belt Sb is re-clamped to the carrier rope by the air nozzle _21.
(usually 200 to 300 mm) before carrying out. In this way, the paper making band Sb for paper passing is
When the paper material S is conveyed to the 5D cylinder 20 and the traveler nozzle 13 is moved to the drive side edge of the paper material S, the paper material S having a paper width W is finally passed to the 5D cylinder 20 and is passed through the continuous pulper 22 below.
to fall.

Next, the paper product S is passed from the 5D cylinder 20 to the calendar part 4 and the reel part 5, but here it is necessary to make the paper product S of paper width W narrow. That is, among the predetermined locations where the paper material S is cut using the movable cutter, the other location is the entrance of the 5D cylinder 20, as shown in FIG. ing. This tail cutter 23
A predetermined width (hereinafter sometimes referred to as w ₄ , usually 200 to 300 mm) from the side edge of the operating side of the paper product S traveling by, that is, the side edge formed by the cut by the trim nozzle 8a on the operating side. It is cut to form a new paper making band Sb' for paper passing. This paper belt for paper passing
As in the case of the press part 2 and the dryer part 3, Sb' is blown downstream by the air nozzle 24, guided by the chute plate 25, passed through the calender roll 26, and further from the outlet to the air nozzle 27 and the chute plate. 28, the paper is passed through the reel drum 29 of the reel part 5.
When the tail cutter 23 is moved to the side edge on the driving side, the paper material S having the paper width W is eventually wound onto the sprue roll 30 which is driven in contact with the reel drum 29, as in the case of the traveler nozzle 13.

In the above example, air nozzles 12, 16,
21, 24, and chute plates 14, 25, and 28 are used, but there are also vacuum type and mechanical type, and manual type, push button type,
Automatic methods and various methods and devices have been developed.

[Conventional technology and problems]

As explained above, the basic principle of paper passing in the paper making process is that the wire part 1 is cut to the paper making width W by the trim nozzles 8 on both sides, and the press part is cut by the suction action of the pick-up roll 10 whose suction width matches the paper making width W. The air nozzle 12, etc. is operated while the moving paper S is cut into predetermined narrow width paper belts Sb and Sb' from the side edge on the operation side by the moving cutting machine. After the windsock is introduced into a predetermined path on the downstream side and moved, the width of the passing paper making bands Sb, Sb' is expanded to the paper making width by operating the movable cutter.

By the way, this paper width W is not constant and varies from the minimum paper width Ws to the maximum paper width Wl depending on the dimensions of the product.
In a paper machine, the center of the width of the paper product S is made to run almost in line with the center line passing through the middle of the width of a wire, drum, etc. Therefore, the position of the side edge of the paper product S varies by about 200 mm depending on the size of the paper width W.

On the other hand, as described above, the air nozzle 12 and the like are usually fixed to the operating side end of the paper machine at a predetermined location where the paper passing operation is performed due to the structure of the paper machine. Therefore, if the papermaking width W is the maximum papermaking width Wl, the positions of the air nozzle 12, etc. and the paper forming band for paper passing will almost correspond, and there will be no problem. It is desirable to pass the paper through the paper and return it to the predetermined paper width W after the paper passing is completed. This method of changing the paper width W is based on the conventional trim nozzle 8 of the paper machine.
This is closely related to the structure of devices such as the pick-up roll 10.

Trim nozzle 8, traditionally used in paper machines
Pickup roll 10 and traveler nozzle 13
will be explained with reference to the explanatory diagram of FIG. 5 which schematically shows them. In the pick-up roll 10, the suction width adjusting plate 10a on the operating side and the driving side is movable in the width direction.
and 10b are respectively attached to one tip of the operating side moving shaft 10c and the driving side moving shaft 10d of the roll axis position, and the operating side suction width adjustment is attached to the end protruding outside the other roll. A rotating screw 10e for moving the plate and a rotating screw 10f for moving the suction adjustment plate on the drive side are respectively attached, and the suction width adjusting plate 10 can be adjusted by manually rotating each rotating screw 10e and 10f for movement.
a and 10b each move. The trim nozzle 8a on the operating side, the trim nozzle 8b on the drive side, and the traveler nozzle 13 are each manually moved.

In order to change the paper width using such a device, while manually moving the trim nozzles 8a and 8b on both sides, the suction width adjustment plates 10a and 10b on both sides of the pick-up roll 10 are manually moved to adjust the width at least on the same side. Since the speed and amount of movement of the paper sheets must be synchronized, two workers are usually required, and even then, there is often a discrepancy in the movement of the two workers, resulting in paper breakage. Automation of paper width changes has been attempted in the past, but trim nozzles 8a and 8b
and the suction width adjustment plate 10 of the pick-up roll 10
A and 10b are difficult to synchronize, and since one of them involves the movement of the internal structure of the pick-up roll 10, there are various difficulties in automation, and no usable one is known yet.

For these reasons, when it is absolutely necessary, such as changing product dimensions, the paper width has been changed using the above method, but in other cases, when starting paper production or passing paper at the time of paper break, the maximum Paper width
Paper was passed as described above without changing the paper width Wl. Therefore, if the paper making width W is small and the position of the side edge of the operating side of the air nozzle 12 etc. and the paper forming band Sb, Sb' for paper passing is shifted by about 200 mm, for example, the paper forming band Sb, Sb' for paper passing by air is shifted. There have been problems such as insufficient air flow, making it difficult to pass the paper, and even when the deviation is not that large, the air flow is uneven, making it difficult to pass the paper smoothly.

[Means for solving problems]

The present invention solves the above-mentioned problems of the prior art, and makes the side edge of the paper product S on the operating side approximately correspond to the position of the air nozzle, regardless of the size of the papermaking width W in a steady state, at the start of papermaking or at the time of paper breakage. As a result of research aimed at providing a method and device for paper passing in the papermaking process that can extremely easily pass paper in the optimal position,
Trim nozzles 8a, 8b and pick-up roll 1
A drive motor is installed to move and stop the suction width adjustment plates 10a and 10b of 0, respectively, and the drive motors of both are electrically connected and rotated in synchronization to perfectly adjust the speed and amount of movement of both. The present invention was completed by discovering that paper passing can be carried out extremely easily by moving the paper in synchronization with the movement of the paper.

In other words, one aspect of the present invention is to cut both sides of the paper product by jetting high-pressure water from the trim nozzles on both sides at the rear end of the wire part in the papermaking process, and to cut the remaining parts to the suction width adjustment plate on the operation side and drive side. The pick-up roll is moved to the press part by the suction action of the pick-up roll whose suction width matches the above-mentioned remaining part, and is operated by a movable cutting machine capable of moving the cutting point in the width direction at one or more predetermined points in the papermaking process. The strip is cut to a predetermined width from the side edge formed by the cut by the side trim nozzle and is fixed to the side end of the paper machine at a predetermined location on the downstream side where paper is threaded. After activating the air nozzle and blowing the paper strip to the downstream side with air to introduce it into a predetermined path,
While operating the mobile cutter, move it to the drive side to expand the width of the paper making band for paper passing to the side edge of the drive side of the paper product, and then move it further to a standby position outside the maximum paper width area to pass the paper. At this time, the trim nozzle on the driving side and the suction width adjusting plate on the driving side of the pick-up roll are positioned at a position where paper is constantly made at a predetermined paper making width, and the trim nozzle on the operating side and the suction width on the operating side of the pick-up roll are adjusted. Each drive mechanism with the adjustment plate is equipped with a drive motor that is electrically synchronized and wired to move both at the same time and at the same speed by the same amount of movement, and the trim nozzle on the operating side almost corresponds to the position of the air nozzle. In this state, the trim nozzles on both sides cut each side, and the movable cutter cuts the paper material to form a paper of a predetermined width from the side edge of the operation side. After cutting the paper into strips, the air nozzle is activated and the paper is guided along a predetermined path, and then the movable cutter moves to the drive side and waits according to the predetermined method to cut the width of the paper strip for passing. The present invention relates to a paper passing method in a paper making process, which is characterized by expanding the width of paper to the side edge of the paper product on the drive side, and then moving a trim nozzle on the operation side to a position where a predetermined paper width is obtained.

Another feature of the present invention is that the trim nozzles on both sides are movable in the width direction and can be stopped at a predetermined position for cutting both ends of the paper material with high pressure water at the rear end of the wire part 1; Movement that is movable in the width direction and can be stopped at a predetermined position to cut the paper into a predetermined width from the side edge formed by the trim nozzle on the operation side at the same location to create a paper strip for paper passing. The traveler nozzle, which performs the cutting action using high-pressure water, serves as one of the cutting machines, and the suction width is adjusted to match the width of the remaining paper material after both ends have been cut by moving suction width adjustment plates on the operation side and drive side. A pick-up roll that uses suction power to suction the paper product consisting of the above-mentioned remaining portion and transfer it from the wire part to the press part, and a pick-up roll that uses suction power to transfer the paper product from the wire part to the press part, and a paper product that runs at the rear of the dryer part and cuts it to a predetermined width from the side edge on the operation side. A tail cutter is another type of movable cutter that can be moved in the width direction and can be stopped at a predetermined position to make a paper-making band for passing through the calendar part, and a tail cutter at a predetermined location where the paper passing operation is performed. In a paper passing device that mainly consists of an air nozzle that is fixed to the side end of the operating side of a paper machine and blows the running paper strip downstream with air, at least a trim nozzle on the operating side is used. A trim nozzle drive motor is installed to control the moving speed and position using the speed command PG and position display PG to move the trim nozzle in the width direction and stop it at a predetermined position. Width adjustment plate speed command PG
A drive motor for the suction width adjustment plate is installed to control the movement speed and movement position by the position display PG, move it in the width direction, and stop it at a predetermined position, and at least a drive motor for the trim nozzle on the operating side. The speed command PG and position display PG between the motor and the drive motor for the suction width adjustment plate on at least the operating side of the pick-up roll are electrically synchronized to move the trim nozzle and suction width adjustment plate at the same time and at the same speed. A traveler nozzle that is wired to move the traveler nozzle by a certain amount, and is used to move the traveler nozzle from its original position outside the maximum papermaking width area on the operating side to a standby position outside the maximum papermaking width area on the driving side, and then stop it at a predetermined position. The present invention relates to a paper passing device in a paper making process, characterized in that a tail cutter drive motor is installed for moving the tail cutter in the width direction and stopping it at a predetermined position.

The present invention will be explained in detail below.

[Configuration of the method of the present invention]

As explained above, the basic principle of paper passing in the papermaking process is to cut the paper into a narrow paper strip from the side edge on the operation side, and then pass this paper strip through the air nozzle 12 or the like to the downstream side. The paper is passed by blowing it away to make it travel along a predetermined path and then returning it to its full width.In the conventional technology, this side edge on the operation side is the same as the side edge on the drive side, and in order to make it into a product. This is the side edge formed by the cut made by the trim nozzle 8 when the cutting machine is running steadily at a predetermined paper width W. Therefore, when the movable cutter is moved to the drive side and returned to the full width, the predetermined paper width is It became W. In the method of the present invention, when passing paper, the side edge on the drive side is the same as in the prior art, but the side edge on the operating side is located at the optimum paper passing position that approximately corresponds to the air nozzle 12, etc. (this position is on the operating side at maximum paper making Wl). (almost corresponding to the side edge of) with the trim nozzle 8a, and from this side edge is cut into narrow paper forming bands Sb and Sb' for paper passing, and then in the same manner as above. After passing the entire width of the paper, the operation side edge is brought to its position in the predetermined paper width W, thereby completing the paper passing. In this case, the trim nozzle 8a on the operating side and the suction width adjusting plate 10 on the operating side of the pick-up roll 10 are
In order to move both a and a from the optimum sheet passing position to a position where a predetermined paper width W is obtained, it is necessary to completely synchronize the movements of both. This is necessary both at the start of paper making and at the time of paper cutting. In order to carry out this paper passing method at the time of paper break during paper making, the paper material S is running on the pick-up roll 10 while being cut by the trim nozzle 8 even at the time of paper break. It is necessary to move the trim nozzle 8a on the operating side and the suction width adjustment plate 10a on the operating side of the pick-up roll 10 in synchronism to the optimum paper passing position. In the method of the present invention, in order to easily enable such synchronized movement, drive motors are installed to drive at least the trim nozzle 8a on the operation side and the suction width adjustment plate 10a on the operation side of the pick-up roll 10. Both drive motors are electrically synchronized and wired so that they can move at the same speed and the same amount of movement at the same time. In addition,
On the drive side, by similarly installing a drive motor and connecting these, it becomes extremely easy to change the paper width W during paper making.

[Configuration and operation of the device of the present invention]

Hereinafter, the structure and operation of the apparatus of the present invention suitable for carrying out the method of the present invention will be explained with reference to the drawings.

FIG. 1 is an explanatory diagram schematically showing the main parts of one embodiment of the device of the present invention, and FIG. 2 is an explanatory diagram showing the movement status of the trim nozzle and traveler nozzle when the device of the present invention shown in FIG. 1 is operated. It is.

In the device of the present invention, as shown in FIG. 1, a servo motor for moving and stopping at least the holding portion 8c of the trim nozzle 8a on the operation side is installed as a trim nozzle drive motor 31, and this trim nozzle drive A speed command PGG32 and a position display PG33 are attached to the motor 31, so that the moving speed and moving position of the trim nozzle 8a can be controlled to move the trim nozzle 8a in the width direction and stop the trim nozzle 8a at a predetermined position. It's getting old. Further, a suction width adjustment plate drive motor 34 for moving and stopping the suction width adjustment plate is connected by a belt 10g to a rotating screw 10e for moving the suction width adjustment plate 10a on at least the operation side of the pick-up roll 10, Trim nozzle 8
As in the case of a, a speed command PG32 and a position display PG3 are also attached to this, and the moving speed and moving position of the suction width adjusting plate 10a are controlled to move it in the width direction and stop it at a predetermined position. It is becoming possible to do this. The speed command PG32 between the trim nozzle drive motor 31 on the operation side and the suction width adjustment plate drive motor 34 on the operation side of the pick-up roll 10 and the position display PG
The trim nozzle 8a and the suction width adjusting plate 10a are connected by wires (not shown) so that the trim nozzle 8a and the suction width adjustment plate 10a are moved by the same amount at the same time and at the same speed. Each such drive motor 3
Installation of 1 and 34, speed command PG32 and position display
It is preferable that the mounting and wiring of the PG33 be done on the driving side in the same way as on the operating side, as shown in Figure 1.This not only facilitates the work during paper feeding, but also makes it easier to change the paper width during paper making. Make it extremely easy.

In addition, as shown in FIG. 1, the moving string 35 to which the traveler nozzle 13 is attached is connected to the rotation transmission mechanism 3
A traveler nozzle drive motor 37 is installed to move and stop the traveler nozzle 13 by rotating the traveler nozzle 13 through the drive motor 6, and this moves the traveler nozzle 13 from the original position X outside the maximum paper making width area on the operation side to the drive side. It is possible to move it to a standby position Y outside the maximum paper cutting width area and stop it at a predetermined position. Also, tail cutter 2
A tail cutter drive motor (not shown) is installed to move the tail cutter 3 in the width direction and stop it at a predetermined position.

The predetermined position is the trim nozzle 8 on the operation side.
As for a, as shown in Fig. 2, there is an optimum paper passing position A which approximately corresponds to the position Pl where the side edge Ll on the operating side of the maximum paper width area is formed (as shown in the figure, it is preferable to be as far outside as possible from the position Pl). , is an arbitrary position between the position Pl and the position Ps where the side edge Ls on the operation side of the minimum papermaking width region is formed, and for the trim nozzle 8b on the drive side, the side edge Ll' on the drive side of the maximum papermaking width region and the minimum The position Pl′ where the side edge Ls′ on the driving side of the papermaking width area is formed, respectively.
Ps', and for the suction width adjustment plates 10a and 10b on both sides of the pick-up roll 10, the side edges Ll and Ll' and the side edges Ls and Ls', respectively, similarly to the trim nozzles 8a and 8b. Any position between the corresponding positions, and these trim nozzles 8a, 8b and pick-up roll 10
Since the operation sides and drive sides of the suction width adjustment plates 10a and 10b are stopped moving in synchronization, for example, by operating the trim nozzles 8a and 8b, the suction width adjustment plates 10 can be stopped in the same manner.
a, 10b can be moved and stopped at the same position in the flow direction of the paper material S as the trim nozzles 8a, 8b, respectively. In addition, traveler nozzle 13
In addition to the original position X and the standby position Y of the traveler nozzle 13, the predetermined position of Positions B and C located at distances w ₁ , w ₃ and w ₂ from the side edge La on the operation side formed by cutting by the traveler nozzle 13 at the position for making the paper width, that is, the optimum paper passing position A. and D, and the predetermined positions of the tail cutter 23 are one at the standby position Z on the drive side outside the maximum paper cutting width region, and the other at the distance w ₄ from the side edge La as in the case of the traveler nozzle 13. This is position E. Then, such predetermined positions Pl, Pl', Ps, Ps', A, excluding the above arbitrary positions,
B, C, D, and E are each provided with a limit switch, and the trim nozzles 8a and 8a are moved.
8b, traveler nozzle 13 or tail cutter 2
3 is designed to automatically stop at this predetermined position. Normally, paper break detection devices are installed at key points in case paper breaks occur during paper machine operation, and alarm devices connected to these devices make it possible to detect paper breaks as soon as they occur. There is.

In addition to the above, air nozzles 12 and the like are installed at conventional locations.

Using such a paper passing device, the trim nozzles 8a, 8b, and the suction width adjustment plates 10a, 10 of the pick-up roll 10 that move and stop in synchronization with the trim nozzles 8a, 8b.
b. Traveler nozzle 13 and tail cutter 23
The trim nozzles 8a, 8b and the suction width adjusting plate 1
0a and 10b can be operated separately except for movement and stopping in synchronization with 0a and 10b, and paper can be passed according to the method of the present invention. However, in order to feed the paper more easily, at the start of paper making or when the paper is cut, the order is set in advance according to the paper threading operation procedure as described later.
It automatically moves to a predetermined location and stops, and trim nozzles 8a, 8b, traveler nozzle 1
3. It is preferable to electrically connect each drive motor and the paper breakage detection device so that the tail cutter 23 is automatically operated at a predetermined time. Although automation has been achieved up to this point in this example, the air nozzle If the operation of the 12th etc. is also automated, the automation of paper feeding will be completed.

Next, the operation of the apparatus of the present invention will be explained with reference to FIGS. 1 and 2.

Hereinafter, a case will be described in which a paper product S having a papermaking width W and a side edge L on the operating side and a side edge L' on the driving side is passed through.

First, when paper breaks during papermaking operation, the following effects occur depending on the location of the paper break.

(a) 5D cylinder 20 of after dryer 3c
In the case of paper breakage between the outlet of the calender part 4 and the outlet of the calender part 4: In this case, the paper product S falls into the continuous pulper 22 with the entire paper width W.

In response to a paper breakage signal from the paper breakage detection device, the trim nozzle 8a on the operating side moves from position P to the optimum paper passing position A and stops while paper is being made steadily at the papermaking width W while being in an operating state. At this time, the suction width adjustment plate 1 on the operating side of the pick-up roll 10
The trim nozzle 8b on the drive side (and the suction width adjustment plate 10 on the drive side of the pick-up roll 10 corresponding to the leakage)
The position of b) remains at position P'. In this way, a side edge La is formed on the paper product S, and a side edge La is formed on the paper product S.
The paper material S runs from the pick-up roll 10 and falls onto the continuous pulper 22 while L' remains as it was.
Next, the tail cutter 23 moves from the standby position Z to the position E, stops, and is activated to cut the paper material S into paper-forming strips Sb' having a width _w4 . In this state, the air nozzles 24 and 27 or only the air nozzle 24 are operated depending on the paper breakage point, and after the paper strip Sb' is passed through the reel part 5, the tail cutter 23 is moved to the drive side while being in the operating state. After expanding the width of the paper strip Sb' to the side edge L', it moves to the standby position Z, and then moves from the position A to the original position P with the trim nozzle 8a on the operating side in the operating state. By stopping the
The paper product S having the paper width W travels to the reel part 5 and is wound up, completing the paper threading.

(b) When a paper break occurs between the outlet of the 4D cylinder 18 of the pre-dryer 3a and the inlet of the 5D cylinder 20 of the after-dryer 3c: The trim nozzle 8a on the operating side is moved from position P to the optimum passage by the paper break signal while remaining in the operating state. At the same time as the paper moves to the paper position A, the travel 13 moves from the standby position Y to the position C and operates, forming the side edge La and passing the paper material S with the width W ₃ from the side edge La. 4D in the state of being cut into paper making strip Sb
In this state, the air nozzle 21 is activated to pass the paper band Sb to the 5D cylinder 20 while the paper band Sb is held between the carrier ropes, and then the traveler nozzle 13 is moved to the drive side with the traveler nozzle 13 in operation. When the width of the paper strip Sb for paper passing is expanded to the side edge L' and then moved to the standby position Y, the paper material S is continuously spread in the width from the side edge La on the operating side to the side edge L' on the drive side. It falls into Pulper 22. Thereafter, the paper material S having the paper width W is passed through the reel part 5 in the same manner as the movement of the tail cutter 23 in (a) above.

(c) When the paper breaks between the exit of the center roll 11 and the inlet of the 4D cylinder 18: In this case, a part of the paper width W often breaks. In response to the paper break signal, the traveler nozzle 13 moves from the standby position Y to the home position 18 paper loss is reduced). Next, trim nozzle 8 on the operation side
From position P to optimal paper passing position A while a is in operation
At the same time, the traveler nozzle 13 moves from the original position X to the position B while operating.
As soon as the side edge La is formed, the paper material S also forms the side edge La.
The sheet is cut into a sheet-passing paper belt Sb having a width of w ₁ and falls from the center roll 11 to the couch pit 9 together with the drive side portion. After that, the air nozzle 12 is operated, and then the air nozzle 16 is operated at the exit of the 3P roll 15, and the SM
After the paper belt Sb for paper passing with a width of w ₁ from the side edge La is passed to the roll 17, the traveler nozzle 1
3 moves from position B to D, and _if the paper belt Sb for paper passing with the width from the side edge La is cut and formed, and is held by the carrier rope at the entrance of the SM roll 17, the process goes smoothly. If the paper is not smoothly passed through to the 5D cylinder 20 and the paper S falls from the travel path between the SM roll 17 and the 4D cylinder 18, a paper break signal is sent to the traveler nozzle 1.
3 moves to position B and refeeds the paper from the exit of the 3P roll 15. If the paper falls between the 4D cylinder 18 and the 5D cylinder 20, the traveler nozzle 13 moves to position C by the signal and feeds the paper from the side edge La. A paper strip Sb for paper passing with a width of w ₃ is cut and formed, and the paper is passed from the exit of the 4D cylinder 18. After the paper strip Sb for paper passing is passed to the 5D cylinder 20 in this way, When the traveler nozzle 13 is moved to the drive side in the operating state and its width is expanded to the side edge L', the paper product S has a width from the side edge La on the operation side to the side edge L' on the drive side. is passed to the 5D cylinder 20 and falls into the continuous pulper 22. Thereafter, the paper material S having the paper width W is passed through the reel part 5 in the same manner as the movement of the tail cutter 23 in (a) above.

Next, the operation of the apparatus of the present invention during paper feeding at the start of papermaking operation will be explained. First, for example, by pressing a button switch, the trim nozzle 8a on the driving side is located at a position P' corresponding to L' on the side edge of the driving side of the paper cutting width W, and the trim nozzle 8a on the operating side is located at the optimum paper passing position A.
(The suction width adjusting plates 10a, 1 of the pick-up roll 10 are positioned in synchronization with the trim nozzles 8a, 8b.
0b is also located at the corresponding position), and the width of the traveler nozzle 13 from the side edge La of the paper band Sb for paper passing from the standby position Y is appropriate for first passing the paper from the center roll 11 to the 3P roll 15. Move to position B where w is ₁ . Paper product S is wire part 1
These trim nozzles 8
a, 8b and the traveler nozzle 13 are operated, and the side part Sa of the paper product S falls from the couch roll 7 to the couch pit 9, and the paper product S having a width up to the side edge L' falls to the side edge.
Pick-up roll 1 along with the drive side part is cut into paper making strip Sb with a width of w ₁ from La.
0, the paper is passed through the center roll 11 and falls into the couch pit 9. From now on, the above for the case of paper breakage.
In (c), from the state in which the paper product S falls into the couch pit 9 in the same state as above, the paper product S having a predetermined paper width W is passed through the reel pad 5 in exactly the same manner as the subsequent operation.

〔effect〕

According to the present invention, each drive motor is installed so that the suction width adjusting plates of the trim nozzle and the pick-up roll can be moved and stopped separately on the operation side and the drive side, and in synchronization between the operation sides and the drive side. By connecting these wires so that they are electrically synchronized and using them, the side edge on the operation side of the paper sheet is temporarily set as the side edge of the optimal paper passing position, and the paper strip for paper passing is set as the side edge of the optimum paper passing position. It has become possible to simply and easily pass the paper along the side edge of the original position.
Therefore, when paper is passed at the start of paper making and at the time of paper cutting, it becomes extremely easy to pass the paper band for paper passing by air in the optimal paper passing device, regardless of the size of the paper making width, and the paper passing due to the small paper making width becomes extremely easy. It has now become possible to completely eliminate the difficulty of Note that the paper width can also be changed extremely easily during paper making.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram schematically showing the main parts of one embodiment of the device of the present invention, and FIG. 2 is an explanatory diagram showing the movement of the trim nozzle and travel nozzle when the device of the present invention shown in FIG. 1 is operated. , Figure 3 shows paper machine 1.
An example paper feeding flow explanatory diagram, Figure 4 is F in Figure 3.
An enlarged explanatory view of the section, Figure 5 shows the conventional trim nozzle,
FIG. 3 is an explanatory diagram schematically showing a pick-up roll and a travel nozzle. 1...Wire part, 2...Press part,
3... Dryer part, 3a... Pre-dryer, 3b... Size press, 3c... After-dryer, 4... Calendar part, 5... Reel part, 6... Suction box, 7... Couch roll, 8... ...Trim nozzle, 8a...Trim nozzle on operating side, 8b...Trim nozzle on drive side, 8c...Holding section, 9...Couch pit, 10
...Pick-up roll, 10a... Suction width adjustment plate on the operation side, 10b... Suction width adjustment plate on the drive side,
10c...Movement axis on the operation side, 10d...Movement axis on the drive side, 10e...Rotary screw for moving the suction width adjustment plate on the operation side, 10f...Rotation screw for moving the suction width adjustment plate on the drive side, 10g... ...Belt, 11...Center roll, 12...Air nozzle, 13...Traveler nozzle, 14...Chute plate, 15...3P
Roll, 16...Air nozzle, 17...SM roll, 18...4D cylinder, 19...SP roll, 20...5D cylinder, 21...Air nozzle, 22...Continuous pulper, 23...Tail cutter, 24... Air nozzle, 25... Shoot plate, 26... Calendar roll, 27... Air nozzle, 28... Shoot plate, 29... Reel drum, 30... Sprue roll, 31... Trim nozzle drive motor, 32... Speed command PG, 33
...position display PG, 34...drive motor for suction width adjustment plate, 35...movement string, 36...rotation transmission mechanism, 37...drive motor for traveler nozzle, A
...Optimum paper passing position of trim nozzle, B, C, D...
...Predetermined position of the traveler nozzle, E...Predetermined position of the tail cutter, L... Side edge on the operating side at a predetermined paper cutting width, L'... Side edge on the driving side at a predetermined paper cutting width,
La...Side edge of the maximum paper passing position, Ll...Side edge of the operating side of the maximum papermaking width area, Ll'...Side edge of the drive side of the maximum papermaking width area, Ls...Side edge of the operating side of the minimum papermaking width area , Ls′…
...side edge on the driving side of the minimum papermaking width region, P...position of the trim nozzle on the operating side when paper is being made steadily at a predetermined papermaking width, PL...operation to form the side edge on the operating side of the maximum papermaking width region Position of the side trim nozzle, Pl′...
The position of the trim nozzle on the driving side that forms the side edge on the operating side of the maximum papermaking width area, Ps...The position of the trim nozzle on the operating side that forms the side edge on the operating side of the minimum papermaking width area,
Ps′...Position of the trim nozzle on the drive side that forms the side edge of the drive side of the minimum paper width area, S...Paper material, Sa
...Side part, Sb, Sb'...Paper making band for paper passing, W...Predetermined paper making width, Wl...Maximum paper making width, Ws...Minimum paper making width,
w ₁ , w ₂ , w ₃ ... Width of the paper strip for paper passing cut by the traveler nozzle, w ₄ ... Width of the paper strip for paper passing cut by the tail cutter, X ... Original position of the traveler nozzle, Y... Traveler nozzle standby position, Z
...Waiting position of the tail cutter.

Claims (1)

[Claims] 1. At the rear end of the wire part in the papermaking process, high-pressure water is jetted from trim nozzles on both sides to cut both sides of the paper material, and the remaining part is cut by suction width adjustment plates on the operation side and drive side. The operation side is moved to the press part by the suction action of the pick-up roll whose suction width matches the above-mentioned remaining part, and is moved to the press part, and is moved to the operation side by a movable cutting machine that can move the cutting point in the width direction at one or more predetermined points in the paper making process. The paper belt is cut to a predetermined width from the side edge formed by the cut by the trim nozzle, and is fixed to the operating side end of the paper machine at a predetermined location on the downstream side where paper is threaded. The air nozzle is operated to blow the paper strip to the downstream side with air, causing it to travel along a predetermined path.Then, while operating the movable cutter, the paper strip is moved to the drive side to cut the paper strip. After expanding the width to the side edge of the paper product on the drive side,
Furthermore, by moving the paper to a standby position outside the maximum papermaking width range, when passing paper, the trim nozzle on the drive side and the suction width adjustment plate on the drive side of the pick-up roll are positioned at a position where paper is constantly produced at a predetermined papermaking width, and the operation is performed. The drive mechanisms of the trim nozzle on the side and the suction width adjustment plate on the operation side of the pick-up roll are each provided with a drive motor electrically synchronized and wired so as to move both at the same time, at the same speed, and by the same amount of movement. , the trim nozzle on the operation side is positioned at the optimal paper passing position that almost corresponds to the position of the air nozzle, and in this state, the trim nozzles on both sides cut each side, and the paper product is cut and formed by the movable cutting machine. After activating the air nozzle while cutting into a paper strip of a predetermined width for paper passing from the side edge of the side, the air nozzle is introduced and travels along a predetermined path, and then the movable cutting machine is moved to the drive side according to the predetermined method. A papermaking process characterized by: expanding the width of the papermaking band for paper passing to the side edge of the drive side of the paper product by waiting, and then moving a trim nozzle on the operation side to a position where a predetermined papermaking width is obtained. How to pass paper. 2 Trim nozzles 8 on both sides that can be moved in the width direction and can be stopped at a predetermined position for cutting both ends Sa of the paper material S with high-pressure water at the rear end of the wire part 1, and trim nozzles 8 on the operation side at almost the same location A movable cutting machine capable of moving in the width direction and stopping at a predetermined position for cutting the paper material S into a predetermined width from the side edge formed by the cut by the trim nozzle 8a to form a paper belt Sb for paper passing. The traveler nozzle 13 performs the cutting action using high-pressure water, and the suction width is matched to the width of the remaining portion of the paper material S from which both ends Sa have been cut by moving the suction width adjusting plates 10a and 10b on the operation side and the drive side. a pick-up roll 10 for sucking the paper S consisting of the remaining portion by suction force and transferring it from the wire part 1 to the press part 2; Tail cutter 23 as another one of the movable cutting machines that can be moved in the width direction and can be stopped at a predetermined position for cutting into a predetermined width from the side edge to form a paper making band Sb' for passing to the calendar part 4. and an air nozzle which is fixed to the operating side end of the paper machine at a predetermined point where the paper passing operation is performed and blows away the running paper belts Sb and Sb′ downstream with air. 12,16,2
In a paper passing device mainly consisting of 1 and 24,
Speed command for at least the trim nozzle 8a on the operation side
A trim nozzle drive motor 31 is installed to control the movement speed and movement position using the PG 32 and the position display PG 33 to move the trim nozzle in the width direction and stop it at a predetermined position. Command the speed of the adjustment plate
A drive motor 34 for the suction width adjustment plate is installed to control the movement speed and movement position by the PG 32 and position display PG 33 to move the plate in the width direction and stop it at a predetermined position, and at least the trim nozzle on the operating side. The speed command PG 32 and position display PG 33 of the drive motor 31 for the pick-up roll and the drive motor 34 for the suction width adjustment plate at least on the operation side of the pick-up roll are electrically synchronized to simultaneously operate the trim nozzle 8a and the suction width adjustment plate 10a. In addition, the wires are connected to move the traveler nozzle 13 by the same amount of movement at a constant speed, and the traveler nozzle 13 is moved from the original position X outside the maximum width area on the operating side to the standby position Y outside the maximum width area on the drive side. A traveler nozzle drive motor 37 is installed to stop the tail cutter 23 at a predetermined position, and a tail cutter drive motor is installed to move the tail cutter 23 in the width direction and stop it at a predetermined position. A paper feeding device used in the paper making process. 3 Trim nozzle 8 and pick-up roll 10
Drive motors 31 and 34 are installed on both the operation side and the drive side of each suction width adjustment plate, and the speed command of each drive motor 31 and 34 on the same side is
The paper passing device in the paper making process according to claim 2, wherein the PGs 32 and the position display PGs 33 are electrically connected to each other in synchronization. 4. In the papermaking process according to claim 2 or 3, in which a limit switch for stopping the trim nozzles 8a, 8b at a predetermined position is installed in the movement path of the trim nozzles 8a, 8b on both sides, respectively. Paper passing device. 5 The drive motors for moving the trim nozzle 8, traveler nozzle 13, tail cutter 23, pick-up roll 10, and suction width adjusting plates 10a and 10b and stopping them at predetermined positions are electrically connected to each other, and the drive motors are electrically connected to each other in accordance with the paper feeding operation procedure. The trim nozzle 8, traveler nozzle 1
3, Tail cutter 23 and air nozzle 12,1
6, 21, and 24 are automatically operated at predetermined times. A paper passing device in a paper making process according to claim 2, 3, or 4.