JPS586833Y2 - Accumulator device for winder - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an accumulator device for a winder for printing paper, etc.

In a winding machine, when the continuously fed web winds up a predetermined amount on a winding shaft, it is necessary to transfer it to a new winding shaft.

In this case, the web is normally cut instantly with a cutter and transferred to a new spindle, but depending on the type of web, it may be difficult to transfer the web to a new spindle after instant cutting.

In such a case, the web is cut using a method such as cutting, and the web that is continuously fed during winding on the new shaft is temporarily stored in an accumulator consisting of a dancer low/L, and the web is temporarily stored in an accumulator consisting of a dancer low/L. Once the preparations are complete, the winding operation using the new shaft is performed.

At this time, the new shaft prepares the web stored in the accumulator for the rewinding operation of the absorber.

On the other hand, considering the winding characteristics, if there is a sudden change in the winding tension or insufficient tension in the winding core, undesirable phenomena such as winding misalignment will occur, even when the web stored in the accumulator is being absorbed. It is necessary to ensure proper winding tension.

The present invention aims to provide an accumulator mechanism that does not cause insufficient winding tension or sudden fluctuations when absorbing the web stored in the accumulator.

In an accumulator for a winding machine, in order to smoothly absorb the web that is continuously fed and kinked when the winding shaft is switched, it is necessary to apply force in the direction of absorption of the web.

Possible methods for this include l) a method using balance weights, 2) a method using pneumatic/hydraulic cylinders, and 3) a method using a tono shift motor. Taking these into consideration, the system using balance weights as shown in FIG. 1D is considered to be the best method.

However, looking at the tension of the web 3 when the winder absorbs the web stored in the accumulator, the winding tension is determined by the weight of the balance weight 4, and is independent of the winding tension set in the winder. Become.

In addition, the moving speed of the dancer roll 1 is determined by the difference between the tension exerted by the dancer roll and the balance weight 4 and the winding tension applied to the winding machine, as well as mechanical resistance and inertia. It depends greatly on the tension, and when the dancer roll 1 collides with the lower limit stopper 2, a large tension fluctuation occurs.

Furthermore, if the traveling speed of the web related to the winding 11m increases extremely, a problem arises in that the appropriate tension is not applied to the web even though the tension is set in the winder.

This invention was devised as a solution to this problem.
This will be explained with reference to FIG. 2 and subsequent figures.

6 is a non-excitation operated brake, and 7 is a motor.

Rotation of the motor 7 is transmitted to the pinion 10 via the gear box 12 and the drive shaft 11.

On the other hand, dancer roll 1 has guide frame 13...
・Dance row that can move up and down guided by /
Its shaft is fixed to the L guide 14.

A rack 9 is attached to the outside of the dancer roll 14 and meshes with a pinion 10.

15 is a rolling wheel attached to the dancer roll guide 14.

4 is a balance weight, which has a weight W shown by the following formula (1), and is attached to the sprocket 17 by the chain 16 (Fig. 34).
, and is connected to the top of the dancer roll guide 14.

W =WD+F (sinθ1+2+sinθ2)
--------(1) However, W: Weight of balance weight 4 WD: Weight of dancer roll part F: Tension of web θ1. θ2: Angle of the web (see Figure 3) The flake kilo is for fixing the dancer roll part, and the motor 7 is used to forcibly move the dancer roll 1 when the winder absorbs the web 3 stored in the accumulator. It is used for descending.

Furthermore, the motor 7 is also used to lower or raise the roller 1 during sheet feeding.

The control method of the accumulator device consisting of above ground capture will be explained below according to the operating state of the dancer roll 1.

1) When the winding machine is continuously winding, the dancer roll 1 is at its lowering limit, and the tension of the web 3 is used to prevent the dancer roll 1 from descending any further due to the braking torque of the non-excitation operated brake. ing.

11) When the winding machine is stopped for rewinding, a stop signal from the winding machine excites the non-excitation operated brake 6 to release the brake.

Then, due to the gravity of the balance weight 4, the dancer roll rises and the web 3, which is continuously fed in, is stored in the accumulator.

At this time, the motor 7 is rotated from the outside by the gravity of the balance weight 4.

111) - When rewinding is completed and the winding machine is restarted, the motor 7 is started downward in response to a start signal from the winding machine, and the dancer roll 1 is gradually lowered.

When the lowering limit is reached, the lowering limit detection switch 8 stops the motor I, and the non-excitation operated brake 6 is deenergized to return to the state of i).

At this time, a negative torque is applied to the motor 7 due to the web tension, but the moving speed can be maintained if a motor (induction motor, torque motor, AC/DC motor, etc.) that applies regenerative braking is used.

When absorbing the web 3 into the accumulator, if the mechanical loss of the drive part of the dancer roll 1 is a problem, a reducer 18 (for example, a worm gear) is installed between the motor 7 and the gear box 12 as shown in FIG. Just insert the electromagnetic clutch 19.

The control method in this case is as follows.

i) When the winder is continuously winding, the dancer roll 1 is in the lowering position, and the clutch 19 is energized and connected.

Then, the dancer rotation is fixed by the self-locking torque of the speed reducer 18.

11) When the winder is stopped for rewinding, clutch 1
1ii) When rewinding is completed and the winding machine is restarted, the clutch 19 is energized and the motor 7 is started in one stroke.

As described above, according to the present invention, l) When the web stored in the accumulator is absorbed into the winder, an appropriate tension can be applied to the web from the beginning of winding, and good winding can be performed.

2) Even if web breakage occurs while the winder is in continuous operation,
The dancer roll is safe because it is fixed at the lower limit.

3) Even if there is a power outage, the dancer row A can be fixed in its position, except for the one in which the electromagnetic clutch shown in FIG. 5 is inserted.

4) The motor 7 allows the shidancer roll 1 to be lowered and raised, improving work efficiency during sheet feeding.

5) In order to stop the winder and rewind it to a new shaft, the drive source for the winder can be turned on by one machine.

6) Even if the type of web changes, there is no need to change the weight of the balance weight 4.

It has various effects such as.

[Brief explanation of the drawing]

Fig. 1 is a front view of a known accumulator device, Fig. 2 is a front view of an accumulator device according to the present invention, Fig. 3 is a plan view, Fig. 4 is a right side view of Fig. 3, and Fig. 5 is a drive Another embodiment of the section. Click the button on the diagram, 1...Dance rotation, 2...Lower limit stopper, 3...Web, 4...Balance weight,
5... Guide roll, 6... Non-excitation operated brake, 7... Motor, 8... Lowering limit detection switch, 9...
... Rack, 10... Pinion, 11... Drive shaft,
12...Gear box, 13...Guide frame, 1
... Dancer roll guide, 15 ... Rolling wheel, 16.
... Chain, 17... Sprocket, 18... Reducer, 19... Electromagnetic clutch.

Claims (1)

[Scope of utility model registration request] A motor 7 for moving the dancer row/L mechanically connected to the movement device of the dancer row A I, a non-excitation operated brake 6 connected to the shaft of the motor 7, and a dancer to which the shaft of the dancer roll 1 is fixed. It consists of a balance weight 4 connected to the top of a roll guide 14 by a chain 16 via a sprocket 17, and a web 3 stored in an accumulator.
An accumulator device for a winding machine, characterized in that when the winding machine absorbs the movement speed of the dancer roll L1, the moving speed of the dancer roll L1 is regulated by a motor 7.