JPS6315243Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a web winding device that can be applied to a paper winder.

FIG. 1 shows the basic configuration of a web winding device conventionally used in paper mills and the like. The web winding device shown in FIG. 1 is well known in the art, and consists of an unwinding section 1, a winding section 2, and an unloading section 3. Further, 4 is a rewind roll, 5 is a paper roll, 6 is a slitter, 7 is a first winder drum, 8 is a second winder drum, 9 is a dump roll, 10 is a core shaft, 11 is a winding roll, 12 is a rider roll, 1
3 is a shaft pocket, 14 is a winder table, and 15 is a cradle.

FIG. 1 also shows a part of the winding operation in which the winding roll 11 is finished being wound on the winder drums 7 and 8, and then the next winding is started after going through various steps. Now, when the web a from the unwinding roll 4 is cut into a predetermined width by the slitter 6 and completed into a take-up roll 11 of a predetermined length on the winder drums 7 and 8, the web take-up device is in the state shown in FIG. Stop rotation of each roll.

After lifting the rider roll 12 vertically upward, the operator climbs onto the winder table 14 and tears the outer layer of the take-up roll 11 in the width direction.
Next, the dump roll 9 is rotated around the first winder drum 7 axis, and the take-up roll 11 is pushed onto the cradle 15. Thereafter, the dump roll 9 retreats to its original position, and the core shaft 10 with the core B installed, which was previously stored in the shaft pocket 13, is removed.
is moved to the V-groove formed by the first and second winder drums 7 and 8 by a shaft carrying device (not shown).

The above describes the winding process using the most common conventional web winding device.However, when using a conventional web winding device, direct manual work by the operator is required as described above, so there are many problems caused by this. There were flaws. That is, after the core shaft is brought in by the operator, the paper must be manually torn in the width direction, which is extremely troublesome.

Furthermore, since the core shaft 10 is used, it is difficult to pull out the core shaft 10 from the take-up roll 11,
It can also be inserted into the core, or even inserted into the core shaft 1.
0 is required, which increases the overall price of the winder, complicates the winder mechanism, increases installation space, increases maintenance work, and complicates operation. There were other difficulties.

2 and 3 show a conventional web winding device proposed to eliminate the above-mentioned drawbacks, including a rewinding section 1, a winding section 2, an unloading section 3, a rewinding roll 4, and a paper roll. 5, slitter 6, first winder drum 7,
The structure and function of the second winder drum 8, core shaft 10, take-up roll 11, rider roll 12, etc. are the same as in FIG. 1. But cradle 15'
The cradle 15 is different in shape from the cradle 15 in FIG.
It has a structure that doubles as the winder table 14 and cradle 15 shown in the figure.

To explain the differences from Fig. 1 below, in Figs. 2 and 3, 20 is a nip guard;
This is provided for the purpose of preventing the take-up roll 11 from popping out and for the safety of workers. Reference numeral 21 denotes a sharp paper cutting knife, which is attached to the tip of the web guide 22. The tip of the paper cutting knife 21 has a serrated cutting edge.

Further, the web guide 22 is installed on the same frame as the paper pressing roll 23, and is installed so that it can be raised and lowered by a hydraulic cylinder or the like, or can be turned around the bearing of the first winder drum 7. Furthermore, when the web guide 22 is in the raised position, it enters between the first and second winder drums 7 and 8, and the paper cutting knife 21 attached to the tip inserts the paper cutting knife 21 just below when a new core is brought into the pocket between the winder drums. It is located on the first drum 7 side. The paper pressing roll 23 is provided so as to be in contact with the first winder drum 7. 26 indicates a double-sided adhesive tape. Reference numeral 9' denotes a dump bar which has the function of pushing out the take-up roll 11 and pushing the web a deep into the paper cutting knife 21.

Reference numeral 25 denotes a core bringing-in device which is configured so that when the core b is brought from the standby position to the pocket between the winder drums formed by the first and second winder drums 7 and 8, the adhesive tape 26 becomes the lower surface of the core b. bring it to.

Now, the winder shown in FIG. 2 shows a state in which winding of the winding roll 11 is completed. Referring to FIG. 3, the process up to the return of the dump bar 9' after the take-up roll 11 is pushed out above the cradle 15' and the web a is cut will be explained. Now, when the winder operator presses a switch on the control desk (not shown) in the state shown in FIG. 2, the operation starts.

The rider roll 12, nip guard 20, web guide 22, paper presser roll 23, and paper cutting knife 21 rise, and the cradle 15' moves to the take-up roll 11 receiving position.

The take-up roll 11 is pushed onto a cradle 15' by a dump bar 9' (FIG. 3). When the winding roll 11 is pushed out in this state, the unwinding roll 4 and the winder drum 8 do not rotate, and the web a
Tension is generated in the winder drum 8, and the winding roll 11 slips between the winder drum 8 and the cradle 1.
5' is pushed out.

The tip of the paper cutting knife 21 pierces the web a during extrusion, and the tension of the web a on the unwinding roll side is cut by the paper cutting knife 21. When the dump bar 9' moves further forward, the tip of the dump bar 9' covers the paper cutting knife 21 as shown in FIG. 4, pulls the web a at an acute angle to the paper cutting knife 21, and cuts the web a.

The dump bar 9' returns to its original position, and the cradle 15' takes out the take-up roll 11.

Further, FIGS. 5 and 6 show an outline of a conventional web winding device. In Figures 5 and 6, 40
4 is a paper feed roll, and 41 is a web guide plate, which is pressed against and along the winder drum 7 by a cylinder 42. Further, 43 is a paper press block attached to the frame 44.
is the fulcrum 4 provided on the pedestal 46 by the air cylinder 45.
7 to press the paper presser block 43 against the winder drum 7.

However, the apparatus shown in FIG. 5 had insufficient guiding performance when the web a was passed through. That is, since the paper feed roll 40 and the web guide plate 41 are installed only on a part of the surface length of the winder drum 7, and the web guide plate 41 only extends downward from the center of the winder drum 7, the web a The width that the paper can pass through is narrow, and the tip of the web a is placed in the V-shaped pocket 4 above the winder drums 7 and 8.
8, it often falls to the winder drum 8 side,
It was impossible to pass paper with the core b shown in FIG. 1 placed in the pocket 48 between the winder drums 7 and 8.

Further, in FIGS. 5 and 6, the paper pressing function is limited. That is, the paper presser block 43 presses and holds the web a against the winder drum 7, but since the paper presser block 43 is a fixed block, it is not required by the automatic wholesale change device for the cardboard winder filed in Japanese Patent Application No. 121220/1980. With the web a pressed against the winder drum 7, the function of rotating the winder drum 7 could not be achieved. In addition, since the paper passing device and the paper holding device are each installed separately, the entire device is expensive and is not economical.

The present invention was proposed to solve the above-mentioned conventional drawbacks, and includes a paper cutting knife at the lower part of the pocket between the first and second winder drums, which also serves as a mounting frame for the paper cutting knife, and has a paper cutting knife at the bottom of the pocket between the first and second winder drums. A web guide that guides the cut web along the outer periphery of the first winder drum and a paper holding roll that holds the cut web, and by integrating these, economical efficiency is improved and the entire width of the web is It is an object of the present invention to provide a web winding device that is capable of guiding the web through the winder, has good web guiding performance, and has effects such as improving the web passing performance in the winder.

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 7 and 8 show embodiments of the present invention.
Now, in FIGS. 7 and 7, reference numeral 21 denotes a paper cutting knife, which is attached to the tip of the web guide 22. Note that the structure of the paper cutting knife 21 is the same as the conventional one. Further, the web guide 22 is installed on the same frame 55 as the paper presser roll 23, and the hydraulic cylinder 51
It is installed so as to be able to turn around the bearing 54 of the first winder drum 7. However, frame 55
may be moved up and down in addition to rotating motion. 52 indicates a mounting seat for the cylinder 51;
3 is an arm provided between the frame 55 and the bearing 54.

Next, the effect will be explained. First, to explain the case where the web a is passed from the unwinder to between the winder drums 7 and 8, when the paper is passed through the winder for the first time and when the paper runs out on the way, the web a is passed from the unwinding roll 4 shown in Fig. 2. It is necessary to pass the web a through the paper roll 5, the slitter 6, and between the drums 7 and 8. In this case, both the web guide 22 and the paper press roll 23 are pressed against the first winder drum 7 side.

The web a passes through the unwinding roll 4, the paper roll 5, and the slitter 6, and the leading end thereof is placed on the leading end of the web guide 22, and the web a is fed while rotating the first winder drum 7. The leading edge of the web a passes through the nip between the paper holding roll 23 and the winder drum 7, is given a feeding force, is guided by the web guide 22 and the paper cutting knife 21, and is moved between the first winder drum 7 and the second winder drum 8. It comes out along the first winder drum in a pocket.

Next, the case of normal automatic wholesale replacement will be explained. First, the take-up roll 11 is pushed onto the cradle 15' by the dump bar 9'. Then, the tip of the paper cutting knife 21 pierces the web a during extrusion, and the dump bar 9' moves forward to cut the web a. The cut web a is transferred to the paper presser roll 23 and the first winder drum 7.
The web guide 22 holds the next core b in such a way that it can easily be brought in and bonded to the web a.

Conventionally, the paper passing guide for web a and the paper holding device for holding web a were provided separately, but the present invention has a compact and economical device that is integrated with the paper cutting device. It can be made into an expensive device. Further, compared to conventional paper passing guides and paper holding devices, it is possible to improve the guiding performance during paper passing and the paper holding function during automatic wholesale change, respectively. Particularly, in the paper pressing function, the cutting tip of the web a is held on the back side of the paper cutting knife, and the winding drum can be rotated while the paper pressing roll is pressed against the winding drum.

[Brief explanation of the drawing]

Figures 1 and 2 are side views of a conventional web winding device, Figure 3 is an enlarged view of the main parts in Figure 2, Figure 4 is a detailed view of the X section in Figure 3, and Figure 5 is a side view of a conventional web winding device. A side view showing the winder drum section of another conventional web winding device, FIG. 6 is a view taken along the Y arrow in FIG.
The figure is a side view of a web winding device showing an embodiment of the present invention, and FIG. 8 is a view taken along the Z arrow in FIG. 7. Explanation of the main parts of the figure, a...web, b...core, 7...first winder drum, 8...second winder drum, 9'...dump bar, 11...take-up roll, 15'... Cradle, 21... paper cutting knife, 22... web guide, 23... paper presser roll, 55... frame.

Claims (1)

[Scope of utility model registration request] In a web winding device that uses a dump bar to push out a winding roll formed by winding a web onto a cradle onto a core brought into a pocket section between first and second winder drums, a core is brought into a pocket section between the first and second winder drums. A web guide having a paper cutting knife, which also serves as a mounting frame for the paper cutting knife, and guiding the leading edge of the web along the outer periphery of the first winder drum, and a paper presser roll holding the cut web, as well as A web winding device characterized by being integrated and equipped.