JPH048125Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention automatically overlaps and splices the starting end of a web from a web roll waiting near the end of the web being fed, thereby continuously producing a web. The present invention relates to a feeding and feeding device, in particular, which is capable of feeding and feeding a web from a web roll by automatically splicing the web from either the downward or upward direction.

[Conventional technology]

The automatic web splicing apparatus using a turret board 1 as shown in Fig. 1 has two methods: a downward feeding method in which the web is pulled out from the lower half of the web roll, and an upward feeding method in which the web is pulled out from the upper half of the web roll. There is.

However, in order to overlap and splice the old and new webs, an automatic splicing mechanism 2 as shown in FIG. 1 is required since the shapes are different.

Regarding this point, conventionally, automatic replenishing mechanisms 2, 2 are separately provided at two locations on the upper and lower sides of the web supply path, and the upper and lower automatic replenishing mechanisms 2,
By selectively using 2, it is possible to deal with both upward and downward movement.

[Problem that the invention attempts to solve]

However, the conventional device requires two sets of automatic replenishment mechanisms 2, one above the other, which have a large number of components, resulting in high manufacturing costs. There was waste because one of the automatic replenishment mechanisms 2 was always idle. Since there are two sets of automatic replenishment mechanisms 2, there is a risk of operational errors such as accidentally activating one that is not necessary and, in some cases, having to stop the web supply. .

This invention was proposed to solve these problems, and it is an automatic web replenishment mechanism that can simplify the structure of the automatic replenishing mechanism 2 and greatly reduce manufacturing costs. The purpose is to obtain a lap splicing device.

Another object of the present invention is to adapt most of the components of the automatic replenishing mechanism 2, such as the pressure roller 17, the cutter 18 for cutting the web, and their driving means, in order to accommodate both the web feeding methods of lower web feeding and upper web feeding methods. etc., can be used in both the lower and upper positions.

Another object of the present invention is to provide an automatic replenishing mechanism 2 that operates at different positions depending on whether the web is running downward or upward.
The object is to enable the switch to be switched between a position corresponding to lower feeding and a position corresponding to upper feeding with a very simple operation.

[Means for solving problems]

In other words, the present invention is basically a single automatic replenishing mechanism 2 that can be used for both the downward web feeding state and the upward web feeding state.

Specifically, it has a turret plate 1 that can be rotated around a rotation axis 4 by switching between forward rotation and reverse rotation,
The turret board 1 has an arm 6 equipped with a support shaft 7 for detachably and rotatably supporting two or more web rolls.

A single automatic splicing mechanism 2 is placed at a splicing position A facing the rotation area of the new web roll W ₂ held on the spindle 7 of the turret board 1.

The automatic replenishment mechanism 2 includes a support arm 16 that is swingably supported around a pivot 26 with respect to a fixed wall 3a, and a pressure roller 1 is attached to the support arm 16.
7 and a cutter 18, respectively.

By swinging the support arm 16 around the pivot shaft 26, the automatic splicing mechanism 2 is moved between the lowering corresponding position facing the lower half circumference side of the new web roll W ₂ at the splicing position A and the new web roll W. In order to change the posture between _two positions, the arm operation cylinder 27 is supported by the fixed wall 3a, and the proximal end of the arm operating cylinder 27 is attached to the fixed wall 3a around the pivot shaft 26 in order to change the posture between the upper half circumferential side and the upward facing position. It has an intermediate arm 28 that is swingably supported.

Piston rod 27 of arm operation cylinder 27
a is rotatably connected to the swinging tip side of the intermediate arm 28, and the swinging tip side of the intermediate arm 28 can be moved up and down the support arm 16 and rotatably connected.

In the lower feeding corresponding position and the upper feeding corresponding position, the automatic replenishing mechanism 2 is placed in an operating posture close to the circumferential surface of the new web roll W ₂ at the overlap splicing position A, and from the rotation area of the new web roll W ₂ . It is possible to switch between the retracted standby position and the standby position by extending and contracting the piston rod 27a of the arm operation cylinder 27.

While the automatic replenishing mechanism 2 is in the operating position, whether in the lower feed corresponding position or the upper feed corresponding position, the web that is being fed out connected to the old web roll W ₁ is transferred to the new web roll W _{2 .} means for driving the single press roller 17 by changing its operating direction so as to press it against the circumferential surface of the web roll W1, and the single cutter for separating the web connected to the old web roll _W1 after being pressed by the press roller 17. 18 in different operating directions.

[Effect]

In the web lowering state, the automatic replenishing mechanism 2 shown in FIG. 1 is positioned on the lower half circumferential side of the new web roll W ₂ to connect the old and new webs. In normal operation, the old web roll W ₁ pays out the web at the position shown in Figure 3, and the turret plate 1 rotates counterclockwise before the remaining amount of web falls below a certain value at the latest, and the position shown in Figure 1 is reached. It has moved to the lap joint position A shown in FIG. Next, the automatic replenishing mechanism 2 is activated to press the web being fed out from the old web roll W ₁ onto the circumferential surface of the new web roll W ₂ using the pressing roller 17 . At this time, preferably a new web roll
W ₂ is rotated in advance, and its circumferential speed is matched with the feeding speed of the web being fed. An adhesive member 36 made of adhesive or an adhesive sheet is provided in advance on the web starting end S of the new web roll W ₂ , and while the new web roll W ₁ rotates, the web starting end S is crimped onto the old web, and the new and old webs are bonded together. are connected to each other. Thereafter, the cutter 18 operates to cut off the web connected to the old web roll _W1 , and the entire automatic splicing mechanism 2 retreats to the standby position.

When the web is in the normal state, the connecting position of the intermediate arm 28 and the support arm 16 is changed as shown in FIG. 4, so that the automatic splicing mechanism 2 faces the upper half circumference side of the new web roll _W2 . In this case, the old web roll W ₁ turns clockwise from the position shown in FIG. 3, contrary to the case when lowering the web, and the new web roll W ₂ moves to the splicing position A. The connection of old and new webs and the separation of excess web are
There is essentially no difference from the state in which the web is being let down, except that the operating directions of the pressing roller 17 and the cutter 18 are different.

[Effect of idea]

The automatic replenishment mechanism 2 of the present invention has a single support arm 16 supporting a pressure roller 17 and a cutter 18, and supports the support arm 16 swingably around a pivot 26 with respect to a fixed wall 3a. , the base end side of another intermediate arm 28 is supported swingably around the same pivot 26, the piston rod 27a of the arm operation cylinder 27 is connected to the swinging end side of the intermediate arm 28, and then the intermediate arm 28 is The swing tip side is connected to the support arm 26 by changing its position above and below. Therefore, by simply changing the connection position of the swinging tip side of the intermediate arm 28 to the support arm 16, the entire automatic replenishment mechanism 2 can be moved to the lowering corresponding position and the uppering corresponding position using the single arm operating cylinder 27. It can be switched easily and rationally. In addition, the automatic replenishment mechanism 2 can be smoothly switched between the operating position and the standby position by using the same arm operating cylinder 27 when the automatic replenishment mechanism 2 is in either the downward feeding corresponding position or the upward feeding corresponding position.

Moreover, one support roller 17 and one cutter 18 are supported on one support arm 16,
It is assumed that the pressing roller 17 and the cutter 18 are driven in different operating directions at a position corresponding to lowering and a position corresponding to upper raising. It is sufficient to have one arm operation cylinder 27 as described above. In other words, the automatic replenishing mechanism 2 of the present invention is not only a single unit, but also has a single support arm 16, a pressing roller 17, and a cutter 18, and has a position corresponding to lower feeding and a position corresponding to upper feeding. The arm operation cylinder 27 and the intermediate arm 28 for switching between positions are also single, which has the advantage of having a small number of members, a simple structure, and a significant reduction in manufacturing costs.

〔Example〕

In the figure, 1 is a turret plate that supports old and new web rolls W ₁ and W ₂ , and 2 is an automatic splicing mechanism 2 for splicing the old and new webs together.

The turret board 1 pivots around a pivot shaft 4 supported in a horizontal position via a bearing 5 on a machine base 3, and has four arms 6 orthogonal to each other with the pivot shaft 4 as the center. Roll support shafts 7, 7 and guide rollers 9, 9 are alternately arranged at each tip. Of these, each support shaft 7 is rotated clockwise and counterclockwise by switching between forward and reverse directions, and the guide rollers 9, 9 freely rotate.

The machine base 3 has a drive mechanism for rotating the turret board 1, and this drive mechanism includes a forward/reverse motor 10 with a brake mechanism, a speed reducer 11, a gear 12 fixed to the rotation shaft 4, and a worm gear for driving this. 13, and a timing belt type transmission device 14 that transmits the power of the reducer 11 to the worm gear 13.
The turret disk 1 is rotated by being switched between forward and reverse directions. That is, when the web is continuously fed downward from the web roll as shown in FIG. 1, the turret plate 1 rotates counterclockwise around the pivot shaft 4, and when the web is fed upward from the web roll as shown in FIG. Turn in the circular direction.

The web rolls W ₁ and W ₂ are roll-wound webs around a core (core tube), and are detachably supported and fixed to support shafts 7 and 7 via the core. In either case of upward or downward feeding, while the web is being fed out, the spindles 7, 7 facing each other at 180°, that is, the old and new web rolls W ₁ and W ₂ supported by these, are in the third position.
As shown in the figure, the old web roll _W1 , which is in a horizontal position and the web is being fed out, is at the overlap splicing position A on the left side of the figure, and in this state, an empty core is attached to the spindle 7 at the roll exchange position B on the right side. is removed and a new web roll W ₂ is installed.

An automatic splicing mechanism 2 is swingably disposed on a fixed wall 3a of a machine stand 3 facing the splicing position A.
In FIG. 2, this automatic replenishment mechanism 2 has a pressing roller 17 at the middle part of the back side of the support arm 16 which is long in the left and right, a cutter 18 near the tip, and a detection member 34 consisting of an optical sensor above and below the middle part. 35
In addition, the total of 3 points at the top and bottom of the rocking base end and the tip
Guide rollers 19, 20 for web guidance,
21 each. The support arm 16 is provided with operating cylinders 22 and 23 on the front side, and these operating cylinders 22 and 23 move the pressing roller 17 through swing arms 24 and 25 provided on the back side.
The cutter 18 is operated to swing in the vertical direction in the state shown in FIG.

The support arm 16 has a pivot 26 relative to the fixed wall 3a.
It can be swung around, and has two positions facing the lower half of the new web roll W ₂ as shown in Figure 1, and one facing the upper half of the new web roll W ₂ as shown in Figure 4. It can be displaced to two positions: the upper position and the upper position.

As a means for switching the posture of the support arm 16 between the two positions described above, in the figure, an arm operation cylinder 27 and an intermediate arm 28 supported by the fixed wall 3a are provided.

In FIG. 2, the intermediate arm 28 has its proximal end supported by the fixed wall 3a so as to be swingable around a pivot 26, and its swinging tip is vertically connected to the arms 29, 30.
It has a bifurcated shape. and lower arm 3
The piston rod 27a of the cylinder 27 is rotatably connected to the piston rod 27a of the cylinder 27. Brackets 32 and 33 are provided projecting above and below near the swinging base end of the support arm 16,
By connecting and fixing one of the upper and lower brackets 32 and 33 to the above-mentioned upper arm 29 with relative rotation allowed, the support arm 16 can be switched to either the upper or lower position. . That is, when lowering the web, the upper connecting arm 29 is connected to the upper bracket 32, and when lowering the web, the upper arm 30 is rotatably connected to the lower bracket 33, as shown in FIG. Now, in both cases of lowering and raising, the arm operating cylinder 27 is telescopically operated to move the automatic replenishing mechanism 2 between the standby position (the imaginary line state in Figure 1) and the operating position (the imaginary line state in Figure 1). solid line state). In this way, the support arm 16
The system in which the support arm 16 is freely rotatable around the pivot 26 and the automatic replenishment mechanism 2 is switched between the standby position and the operating position using the arm operating cylinder 27 is faster and faster than the system in which the support arm 16 is rotated by a motor. This can be said to be an effective embodiment because the structure is simple and reliable operation can be ensured without failure.

Note that an adhesive layer member 36 is formed on the outer surface of the web starting end S by applying an adhesive or pasting a double-sided adhesive sheet. In addition, a balance weight 3 is attached to the swing base end side of the support arm 16.
8 is provided.

Next, the operation of the present device will be explained.

In both the lower web and upper web positions, the old web roll is
W ₁ is at the splicing position A shown in FIG. 3, and the web is fed out from this old web roll W ₁ to the web processing step. The solid line in FIG. 3 shows the state in which the web is being taken out from the web roll, and the imaginary line in the figure shows the state in which the web is being taken out from the web roll.

When replenishing the web while continuing to lower the web, as shown in Figure 3, when the remaining amount of web on the old web roll _W1 falls below a certain value, rotate the turret plate 1 counterclockwise. As shown in FIG. 1, the positions of the old and new web rolls W ₁ and W ₂ are swapped. At this time, the old web roll W ₁ rotates counterclockwise, so that the supply web connected thereto is guided by the lower guide roller 9 and the guide roller 20 on the support arm 16 side.

Before the new web roll W ₂ reaches the splicing position A, the arm operation cylinder 27 is activated and the entire automatic splicing mechanism 2 including the support arm 16 moves from the standby position shown by the imaginary line in FIG. 1 to the solid line. Switches to the operating position shown.

After the automatic splicing mechanism 2 enters the operating position,
The turret plate 1 rotates slowly, and the new web roll W ₂ approaches the automatic replenishing mechanism 2.
When the circumferential surface of the new web roll W ₂ comes close to about 2 cm from the circumferential surface of the pressing roller 17, this is detected by the detection member 34, and the rotation of the turret plate 1 is stopped based on this detection signal.

If a decrease in the winding diameter of the old web roll W ₁ is detected before the rotation of the turret plate 1 stops, and the remaining amount of tape becomes below a certain value, the new web roll W ₂ is rotated clockwise via the roll spindle. It is rotationally driven. Immediately after the turret plate 1 stops rotating, the pressing roller 17 moves to the operating cylinder 2 via the swinging arm 24.
2, it is advanced and swung upward, and the press roller 17 presses the supply web connected to the old web roll _W1 against the lower surface of the new web roll _W2 . At this time, the circumferential speed of the new web roll _W2 and the feeding speed of the web being supplied match. The new web roll W ₂ is set in advance so that the adhesive member 36 is exactly located near the lower side in the rotational direction of the new web roll W ₂ when the pressure roller 17 presses the new web roll W 2 , and the web starting end S immediately connects to the supply web. The web from the new web roll W ₂ is connected to the web from the old web roll W ₁ by being pressed by the pressure roller 17 .

Next, the operation cylinder 23 is activated immediately to swing the cutter 18 clockwise (upward), thereby cutting off the web connected to the old web roll _W1 side.

Thereafter, after the pressing roller 17 and the cutter 18 are moved back and forth to their original positions, the arm operation cylinder 27 is operated to show the entire automatic splicing mechanism 2 including the support arm 16 as shown by the imaginary line in FIG. returns to the standby position and evacuates from the rotation area of the new web roll W ₂ .

Next, the turret plate 1 is rotated counterclockwise to move it to the horizontal position shown in FIG.
At this point, the new Webroll W ₂ is the old Webroll
W becomes ₁ . Then, the old web roll W ₁ that leaves a small amount of the web separated by the cutter 18 is removed from the spindle 7 at the roll exchange position B, and the new web roll W ₂ in a fully wound state is newly chucked onto the spindle 7. be done.

When splicing the web in the web top-up state, the support arm 16 is switched to the top-up corresponding position facing the upper half circumference side of the new web roll W ₂ at the overlap splicing position A using the intermediate arm 28. To do this, first the lower arm 30 of the intermediate arm 28 is
The support arm 16 is disconnected from the upper bracket 32 of the support arm 16, the support arm 16 is swung upward around the pivot shaft 26, and the lower bracket 33 of the support arm 16 is pivotally connected to the upper arm 29. That is, the position of the automatic replenishment mechanism 2 can be changed by simply changing the fixed position of the intermediate arm 28 relative to the support arm 16 up or down.

In the steady state when the web is being fed upward, the web is being fed from the old web roll _W1 as shown by the imaginary line in FIG. When the remaining amount of web falls below a certain value, the turret plate 1 turns clockwise, and the positions of the old and new web rolls W ₁ and W ₂ are switched. As a result, as shown in FIG. 4, the web connected to and supplied to the old web roll _W1 is fed out to the web processing process via the upper guide roller 9 and then the guide roller 21 at the lower end of the support arm 16. There is.

As with the lowering process, the automatic replenishment mechanism 2 switches from the standby position to the working position before the new web roll W ₂ reaches the specified position, and the new web roll W ₂
waiting for the arrival of From then on, the new web roll W ₂ rotates slightly below the horizontal position and stops, and from this state the pressure roller 1
7 and cutter 18 operate, and the old web roll
Connect the starting end S of the new web roll W ₂ to the web from W ₁ , and cut off the web on the old web roll W ₁ side. Incidentally, the new web roll W ₂ is the pressure roller 17.
The proximity of the turret board 1 to the support arm 16 is detected by a detection member 35 different from the detection member 35 used when the support arm 16 is lowered, and the rotation of the turret board 1 is stopped based on this detection signal. After the connection is completed, the pressure roller 17, cutter 18 and support arm 16 are
return to their standby positions, the turret board 1 rotates to the regular position shown in Fig. 3, and the roll exchange position B
Then, the empty old web roll W ₂ is replaced with the new full web roll W ₁ .

[Another example]

After the new web roll W ₂ has rotated to the splicing position A and stopped, the automatic splicing mechanism 2 may operate so as to approach the circumferential surface of the new web roll W ₂ . Further, in the above embodiment, the turret main body 1 is of a two-shaft type, but the number of roll support shafts 7 can be set to two or more as required.

Furthermore, the above-mentioned detection members 34 and 35 are for making the new web roll W ₂ and the automatic replenishment mechanism 2 face each other in a close state, and an embodiment in which the switch piece contacts the roll circumferential surface to detect it is also considered. It will be done. Although two sets of detection members 34 and 35 are prepared, one for lowering the web and the other for upper web, a single detection member may be used for both.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the proposed device, with Figure 1 being a front view when the web is being lowered from the web roll, and Figure 2 showing the main parts mainly showing the automatic replenishing mechanism. A front view, FIG. 3 is a front view showing a steady operation state in which the web is being supplied;
FIG. 4 is a front view of the web when it is in an upwardly extending state from the web roll. 1...Turret board, 2...Automatic replenishment mechanism, 3...Machine base, 4...Turret board rotation axis,
6... Turret plate arm, 7... Roll support shaft, 16... Support arm, 17... Press roller,
18... cutter, 22... pressure roller operating cylinder, 23... cutter operating cylinder, 26...
Pivot of support arm, 27... Arm operation cylinder, 28... Intermediate arm, 34, 35... Detection member, 36... Adhesive member, W ₁ ... Old web roll,
W ₂ ...New web roll.

Claims (1)

[Claims for Utility Model Registration] The turret board 1 has a turret board 1 that can be driven to rotate by switching between forward and reverse rotations around a pivot shaft 4, and the turret board 1 has an arm 6 on which two or more web rolls can be detachably attached. A single automatic splicing mechanism 2 is provided at a splicing position A facing the rotation area of the new web roll W ₂ held on the splint 7 of the turret board 1. The automatic replenishment mechanism 2 includes a support arm 16 that is swingably supported around a pivot 26 with respect to a fixed wall 3a, and a press roller 1 is attached to this support arm 16.
7 and a cutter 18, and by swinging the support arm 16 around the pivot 26, the automatic splicing mechanism 2 is moved to the lower half circumferential side of the new web roll _W2 at the splicing position A. In order to change the posture between two positions: a downward facing position and an upward facing position facing the upper half circumferential surface of the new web roll _W2 , an arm operation cylinder 27 supported by the fixed wall 3a, The piston rod 27 of the arm operating cylinder 27 has an intermediate arm 28 whose base end side is swingably supported around the pivot shaft 26 on the fixed wall 3a.
a is rotatably connected to the swinging tip side of the intermediate arm 28, and the swinging tip side of the intermediate arm 28 can be rotatably connected by changing the position above and below the support arm 16; At the lower feeding corresponding position and the upper feeding corresponding position, the automatic replenishing mechanism 2 is placed in an operating position close to the circumferential surface of the new web roll W ₂ at the overlap splicing position A, and is evacuated from the rotation area of the new web roll W ₂ . It is possible to switch between the standby position and the standby position by the telescopic movement of the piston rod 27a of the arm operation cylinder 27, and the automatic replenishment mechanism 2 is in either the lowering corresponding position or the upper raising corresponding position. means for driving the single pressing roller 17 by changing its operating direction in order to press the web being fed out while connected to the old web roll W ₁ against the circumferential surface of the new web roll W ₂ ; A web splicing method characterized in that the webs are each provided with means for driving the single cutter 18 by changing its operating direction so as to separate the web connected to the web roll W ₁ after being pressed by the pressure roller 17. Device.