JP3510684B2 - Continuous web intermittent feeder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
Continuous web intermittent feeding for continuous web
It concerns the device. 2. Description of the Related Art For example, plastic bags
In the bag making machine to be manufactured, the plastic film
Brazed, intermittently fed, sealing device and cutter
The sheet is guided by the
The plastic film is sealed by the
The cutter cuts the plastic film. this
Produces a plastic bag. In this case,
The stick film is unwound from the web, but the weight of the web is
High volume and inertia, intermittent plastic film
Is not preferable. Therefore, Plasti
Unwinds the film continuously and sends it intermittently
Is required. The device is also generally known and used.
Have been used. FIG. 2 shows a conventional intermittent feeder. This equipment
The plastic film 1 is unwound from the raw material.
And is guided to the continuous feeding roller 2 by the drive motor 3.
The continuous feeding roller 2 is driven and rotated,
The tick film 1 is continuously fed out. In addition,
Plastic film 1 passes through dancer roller 4 and intermittent
Guided by feed roller 5 and intermittently fed by drive motor 6
The roller 5 is driven and rotated, and the plastic film 1 is rotated.
Is sent intermittently. The direction is a horizontal direction. The dancer roller 4 is made of a plastic film
1 is pooled, supported by lever 7
Bar 7 is connected to link 8 and air cylinder 9.
You. Furthermore, a plastic film is applied to the intermittent feed roller 5.
The upstream and downstream rollers 10,
11 are provided upstream and downstream of the dancer roller 4.
And the plastic film 1 is
Guided by the roller 4 and the downstream roller 11,
Roller 10, dancer roller 4, and downstream roller 11
Engages the plastic film 1 and the plastic film
The lum 1 is guided to the intermittent feed roller 5. Therefore, d
A cylinder 9 is link 8, lever 7 and dancer low
Acts on the plastic film 1 and tension is applied to the plastic film 1.
It is. Further, the continuous feeding roller 2
When the plastic film 1 is fed out, it is moved to the upstream side
It passes through the roller 10 and is guided to the dancer roller 4. did
Then, the lever 7 swings around the fulcrum, and the dancer
Roller 4 moves in the direction of engagement with plastic film 1.
Move and descend. Accordingly the upstream roller 10 and
The dancer roller 4 rotates, and the upstream roller 10 and the
The plastic film 1 is guided by the sensor roller 4
Is done. Therefore, the upstream and downstream rollers 10,
Between 11, plasticizer by dancer roller 4
Cut film 1 is pooled. Then, intermittent feed roller
5, when the plastic film 1 is fed,
The dancer roller 4 is pulled by the plastic film 1
The plastic film 1 is raised
, And is supplied to the intermittent feed roller 5. It
The dancer roller 4 and the downstream roller 11 rotate
Rolled by the dancer roller 4 and the downstream roller 11.
The plastic film 1 is guided. Therefore,
Unwind plastic film 1 continuously and intermittently
Can be sent. However, in this device,
Dancer roller 4 is pulled up by tic film 1
When the moment, the inertia of dancer roller 4
Acting on the backing film 1 and stretching the plastic film 1
Force temporarily rises, then tension drops back
I do. Therefore, the tension of the plastic film 1 is kept constant.
Not stretched, and stretched to plastic film 1
There was a problem that only bleeding occurred. In addition, intermittent feed low
When the plastic film 1 is sent by the la 5
The dancer roller 4 and the downstream roller accordingly
11 rotates, but the plastic film 1 is particularly high.
Intermittent feed roller 5 and plastic
Even if the film 1 stops, the dancer's
Roller 4 and the downstream roller 11 rotate, and the dancer row
The roller 1 and the downstream roller 11 do not stop immediately. this
Vibration and loosening of the plastic film 1
The plastic film 1 cannot be sent properly
There is also a problem. [0007] Accordingly, the present invention relates to a plastic
In intermittent feeders for continuous webs such as film,
The continuous web is pooled by the
When feeding intermittently, the tension of the continuous web is kept constant and
To ensure that the web does not stretch and shrink, and
When the continuous web stops, the
Roller and the downstream roller do not rotate,
And without sagging.
It is a thing. [0008] According to the present invention, the intermittent feed roller
In the continuous web feed path, the dancer rollers
Engages the eb and moves in the direction of its engagement, the dancer roller
Pools the continuous web. In addition, continuous web
In the feed path, the upstream and downstream rollers
Provided upstream and downstream of the roller,
At intervals corresponding to the diameter of the
The continuous web is engaged, and the continuous web is
It is guided to the intermittent feed roller. In addition, the first movable timing
The pulley is formed concentrically with the dancer roller and the dancer
The roller rotates and moves integrally with the roller, and the first
A pulley is formed concentrically with the upstream roller, and
And the first downstream timing pulley
Concentrically formed with the downstream roller and integrated with the downstream roller
To rotate. The first movable timing pulley is substantially a dancer
Roller with the same diameter as the first upstream timing pool
The roller has substantially the same diameter as the upstream roller, and the first downstream roller
The timing pulley has substantially the same diameter as the downstream roller.
One. Further, in the movement direction of the dancer roller,
The upstream and downstream timing pulleys are
Of the dancer roller to the timing pulley
Facing the dancer at a greater distance than the roke,
In the direction perpendicular to the moving direction of the
The timing pulleys on the downstream side
Are placed at corresponding intervals. Furthermore, the second movable
The imming pulley is located on the movement path of the dancer roller,
Connected to the dancer roller and integrated with the dancer roller
Moving. The second movable timing pulley is essentially a dancer
It has the same diameter as the roller. In addition, endless
Timing belt is the first movable timing pulley, first upper
Upstream and downstream timing pulleys, second upstream and
Downstream timing pulley and second movable timing pulley
And the timing belt
Are connected. And the upper drive mechanism
The upstream roller and the first upstream timing pulley are driven.
The web is rotated and the continuous web is
Will be Second upstream timing by the upstream drive mechanism
Rotate the pulley, and use the dancer rollers to
The pulley may be pulled. Furthermore, downstream drive
The mechanism is synchronized with the intermittent feed roller, and the downstream drive mechanism
The downstream roller and the first downstream timing pulley
The continuous web is fed to the intermittent feed roller
It is. Synchronize the downstream drive mechanism with the intermittent feed roller
The downstream drive mechanism rotates the second downstream timing pulley.
To feed the continuous web to the intermittent feed roller.
May be. A sprocket is used instead of each timing pulley.
Using an endless chain on its sprocket
Engage and connect each sprocket with a chain
Is also good. DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows an embodiment of the present invention. This is a plastic bag
Is an intermittent feeder for a bag making machine that manufactures
Similarly, the plastic film 1 is unwound from the raw material,
Guided by the continuous feed roller 2 and driven by the drive motor 3
The continuous feeding roller 2 is driven, rotated, and
The film 1 is continuously fed out. Plus
Tick film 1 passes through dancer roller 4 and intermittently feeds
Guided by the roller 5 and intermittently fed by the drive motor 6
5 is driven and rotated, and the plastic film 1 is
Sent intermittently. The direction is a horizontal direction. Dancer
Roller 4 engages the plastic film 1 and
Move in the direction and descend. This allows plastic
Film 1 is pooled. Further, the plastic to the intermittent feed roller 5
In the film feed path, the upstream and downstream rows
La and 11 are upstream and downstream of the dancer roller 4
It is provided in. Upstream and downstream rollers 10, 1
Reference numerals 1 denote an interval C corresponding to the diameter of the dancer roller 4.
And is engaged with the continuous web 1, and the continuous web 1 is
It is guided to the dancer roller 4 and the intermittent feed roller 5.
Therefore, the dancer roller 4 and the upstream and downstream rollers
Between the rollers 10 and 11
1 are kept parallel to each other. Further, the apparatus has a first movable timing
, The first upstream timing pulley 13 and the first
A first movable timing pulley having a downstream timing pulley;
The pulley 12 has substantially the same diameter as the dancer roller 4.
Therefore, it is formed concentrically with the dancer roller 4. First
The upstream timing pulley 13 substantially corresponds to the upstream roller 10.
Of the same diameter as the
The first downstream timing pulley 14 is substantially
Roller of the same diameter as the roller 11 and concentric with the downstream roller 11
Is formed. Therefore, the first movable timing
The reel 12 rotates and moves integrally with the dancer roller 4
The first upstream timing pulley 13 is connected to the upstream roller 1.
0 and the downstream timing pulley 14
It rotates integrally with the downstream roller 11. Further, the second upstream and downstream timings
The pulleys 15 and 16 are provided at fixed positions.
In the moving direction of the circular roller 4, that is, in the downward direction,
2 The upstream and downstream timing pulleys 15 and 16
(1) The timing pulleys 13 and 14
At intervals greater than the travel stroke of the
And face each other. Further, in the moving direction of the dancer roller 4,
In a right angle direction, the second upstream and downstream timings
The pulleys 15 and 16 correspond to each other with respect to the diameter of the dancer roller 4.
They are arranged at corresponding intervals C. In addition, the second possible
The moving timing pulley 17 is on the moving path of the dancer roller 4
And is located below the dancer roller 4,
Roller 4, first movable timing pulley 12, and connection
It is connected to the plate 18. Therefore, the second movable time
Pulley 17 is provided with dancer roller 4 and a first movable tie.
It moves integrally with the mining pulley 12. Second movable time
Pulley 17 has substantially the same diameter as dancer roller 4.
Things. Further, in this device, an endless tie
The first movable timing pulley 12,
1 upstream and downstream timing pulleys 13 and 14,
2 The upstream and downstream timing pulleys 15, 16 and
And the second movable timing pulley 17
Each of the timing pulleys 13, 14, 1 by the belt 19
5, 16, 17 are connected. Therefore, the first possible
Dynamic timing pulley 12 and first upstream and downstream ties
Between the pulleys 13 and 14
The bolts 19 are kept parallel to each other and the second upstream and downstream
Timing pulleys 15, 16 and the second movable timing pulley.
The timing belts 19 between the
Is kept parallel to In this embodiment, the upstream side and the downstream side
Side rollers 10, 11, first upstream and downstream timing
Pulleys 13, 14 and second upstream and downstream ties
Ming pulleys 15 and 16 are also substantially the same as dancer roller 4.
It has one diameter. Therefore, the first upstream side and the downstream side
Imming pulleys 13 and 14 and second upstream and downstream taps
Timing between the imming pulleys 15 and 16
The belt 19 is also kept parallel. Further, a continuous feeding roller 2 and a dancer
A special dancer roller 20 is provided between the rollers 4.
This is engaged with the plastic film 1,
The dancer roller 20 is supported by the lever 7, and the lever 7
It is connected to a link 8 and an air cylinder 9. did
Accordingly, the air cylinder 9 is connected to the link 8, the lever 7, and the damper.
On the plastic film 1
Tension is applied. Further, the apparatus includes an upstream roller 10 and an upstream roller 10.
And the upstream side for rotating the first upstream timing pulley 13
It has a drive mechanism. Is the upstream drive mechanism the drive motor 21?
And the timing belt 22, the upstream roller 10 and the
And a first upstream timing pulley 13.
Therefore, the drive motor 21 and the timing belt 2
2 and the upstream roller 10 and the first upstream timing
The pulley 13 is driven and rotated. In addition, timing
It is transmitted by the belt 19 and the second upstream tie
The mining pulley 15 is also driven and rotates. The direction is figure
1 is a counterclockwise direction. In this embodiment, the upstream roller 10, the first roller
Upstream timing pulley 13 and second upstream timing
The pulley 15 is continuously driven and rotates. further,
A potentiometer is connected to the dancer roller 4
When the dancer roller 4 rises, the potentiometer
It is detected by the
The upstream roller 10, the first upstream timing pulley 1
The third and second upstream timing pulleys 15 rotate at high speed.
Turn over. Conversely, when the dancer roller 4 descends,
It is detected by the
Is controlled, and the upstream roller 10 and the first upstream
Pulley 13 and second upstream timing pulley 15
Rotates at low speed. The drive motor 3 for the continuous feeding roller 2
Even if it is, a potentiometer is connected to the dancer roller 20
When the dancer roller 20 rises,
The drive motor 3 detects it by the
The speed is controlled, and the continuous feeding roller 2 rotates at a high speed.
You. Conversely, when the dancer roller 20 descends,
The drive motor 3 detects it by the
The speed is controlled, and the continuous feeding roller 2 rotates at a low speed.
You. Further, the apparatus has a downstream roller 11 and a downstream roller 11.
And the downstream side that rotates the first downstream timing pulley 14
It has a drive mechanism. Is the downstream drive mechanism the drive motor 23?
The timing belt 24, the downstream roller 11 and the
And a first downstream timing pulley 14.
Then, the intermittent feed roller 5 is driven by the drive motor 6.
When the motor rotates, the drive motor 23 synchronizes with it,
Drive motor 23 and timing belt 24
Flow-side roller 11 and first downstream-side timing pulley 14
Is driven and rotates. The downstream roller 11 is an intermittent feed roller.
The motor rotates at the same peripheral speed as the roller 5. In addition, the timing
It is transmitted by the belt 19 and the second downstream
The pulley 16 is also driven and rotates. Figure 1
In the counterclockwise direction. In this apparatus, the downstream roller 11, the
First downstream timing pulley 14 and second downstream timing
When the pulley 16 is stopped, the drive motor 21
Therefore, the upstream roller 10 and the first upstream timing
When the coil 13 is driven and rotated, the first upstream timing
Timing belt 19 is pulled up by pulley 13
And the timing belt 19 is moved to the second movable timing pool.
Re, the second upstream timing pulley 15 and the first upper
The first movable timing passes through the downstream timing pulley 13
Proceed to pulley 12. Therefore, the timing belt
19, the dancer roller 4, the first movable timing
Pulley 12 and second movable timing pulley 17 are pulled down
And descends. Timing belt 19, first movable terminal
Imming pulley 12 and second movable timing pulley 1
7, the first movable timing pulley 12
Between the first upstream and downstream timing pulleys 13 and 14
The timing belts 19 are kept parallel to each other.
The second upstream and downstream timing pulleys 15,
16 and the second movable timing pulley 17,
The timing belts 19 are also kept parallel to each other,
Is the distance C corresponding to the diameter of the dancer roller 4 and is the same.
Is the interval. Therefore, the timing belt 19 is supported.
The first movable timing pulley 12 and
Pull down the second movable timing pulley 17 without any trouble.
Can be. Therefore, the dancer roller 4 is made of plastic.
It moves in the direction of engagement with the backing film 4 and descends. did
Then, the plastic film 1 moves the upstream roller 10
Street, led to dancer roller 4
Therefore, the plastic films 1 are pooled. Further, the first upstream roller 10 and the first
When the upstream timing pulley 13 rotates, the timing
The second upstream timing pulley 15 is moved by the belt 19.
Driven, rotated, and
Circular roller 4, first movable timing pulley 12, and
2. The movable timing pulley 17 is driven and rotates. No.
1 The upstream timing pulley 13 is substantially the upstream roller 1
0, and the upstream roller 10 has a timing base.
It rotates at the same peripheral speed as the tilt 19. 1st movable timing
The pulley 12 has substantially the same diameter as the dancer roller 4.
The dancer roller 4 is the same as the timing belt 19
It rotates at peripheral speed. Therefore, plastic film
When 1 is led to dancer roller 4 and pooled,
1 The upstream roller 10 and the dancer roller 4
The plastic film 1 is guided and the plastic film
Room 1 is properly guided and pooled. Thereafter, the intermittent feed roller is driven by the drive motor 6.
When the roller 5 is driven and rotated, the drive motor 23
In synchronization with the downstream rollers 11 and
And the first downstream timing pulley 14 is driven and rotated.
I do. Therefore, the first downstream timing pulley 14
Therefore, the timing belt 19 is raised,
The belt 19 is the first movable timing pulley 12, the first lower
Flow timing pulley 14 and second downstream timing
Proceeds to the second movable timing pulley 17 through the pulley 16
Run. Therefore, the timing belt 19
Sensor roller 4, first movable timing pulley 12, and
The second movable timing pulley 17 is raised and raised.
You. The first movable timing pulley 12 and the first upstream side and
The timing between the downstream timing pulleys 13 and 14 is
The imming belts 19 are kept parallel to each other and the second upstream side
And the downstream timing pulleys 15, 16 and the second movable
The timing belt between the imming pulleys 17
19 are also kept parallel to each other and the distance between them is
The interval C corresponding to the diameter of 4 and the same interval
Is as described above. Therefore, the timing bell
Move the ball 19 without any trouble, and the dancer roller 4, 1st possible
Dynamic timing pulley 12 and second movable timing pulley
The rib 17 can be raised without any trouble. Therefore, the intermittent feeding by the drive motor 6 is performed.
Roller 5 is driven and rotated, and the plastic film
1 is intermittently fed, the timing belt 19
The dancer roller 4 is lifted and rises
is there. Accordingly, the plastic film 1 is
, And is supplied to the intermittent feed roller 5. Further, the downstream roller 11 and the first downstream
When the side timing pulley 14 rotates, the timing bell
19 drives the second downstream timing pulley 16
And the dancer is rotated by the timing belt 19
Roller 4, first movable timing pulley 12, and second movable pulley 12
The moving timing pulley 17 is driven and rotates. 1st lower
The downstream timing pulley 14 is substantially in contact with the downstream roller 11.
The downstream roller 11 has the same diameter as the timing belt.
It rotates at the same peripheral speed as 19. First movable timing
The core 12 has substantially the same diameter as the dancer roller 4,
The circumferential speed of the dancer roller 4 is the same as that of the timing belt 19.
Rotate in degrees. Further, the downstream roller 11 is an intermittent feed roller.
The motor rotates at the same peripheral speed as the roller 5. Therefore, dancer
Roller 4 also rotates at the same peripheral speed as the intermittent feed roller 5.
You. Therefore, the plastic film 1 is intermittently fed.
Roller 5 and the dancer roller 4 and downstream
The plastic film 1 is guided by the side rollers 11.
Thus, the plastic film 1 is supplied accurately. Further, the dancer roller 4 is raised or lowered.
When it drops, it is detected by the potentiometer,
The speed of the drive motor 21 is controlled, and the upstream roller 10
1 upstream timing pulley 13 and 2nd upstream timing
The pulley 15 rotates at a high speed or a low speed. this
The position of the dancer roller 4 is controlled by the
The roller 4 returns to the original position. Also dancer roller
When 20 rises or falls, the potentiometer
Is detected, the speed of the drive motor 3 is controlled,
The feeding roller 2 rotates at a high speed or a low speed. This
As a result, the position of the dancer roller 20 is controlled,
The roller 20 returns to the original position. Therefore, in this apparatus, the intermittent feed row
When the plastic film 1 is sent by the la 5,
Timing belt 1 instead of plastic film 1
9 raises the dancer roller 4 and raises it.
You. Thereby, the plastic film 1 is supplied,
It does not affect the tension of the plastic film 1. I
Therefore, the tension of the plastic film 1 was kept constant.
Therefore, the plastic film 1 does not expand and contract. Sa
In addition, the intermittent feed roller 5 and the plastic film 1
Stops, and the downstream roller 11
To stop and the dancer
The roller 4 is braked and the dancer roller 4 also stops immediately.
Therefore, vibration and slack of the plastic film 1
Does not occur, and this can be sent accurately. In this embodiment, the drive motors 21 and
23 used as upstream drive mechanism and downstream drive mechanism
Then, the drive rollers 21 and 23 drive the upstream rollers 10 and
And first upstream and downstream timing pulleys 13, 1
4 has been described as rotating, but not necessarily
no need to do that. For example, the drive motor 21 is
Roller 10 and the first upstream timing pulley 13
Connected to the second upstream timing pulley 15
The second upstream timing pulley 15 is rotated by the
Even if it is turned, it is transmitted by the timing belt 19
And the upstream roller 10 and the first upstream timing
Can be rotated. Drive motor 23 down
Flow-side roller 11 and first downstream-side timing pulley 14
Instead, it is connected to the second downstream timing pulley 16,
The second downstream timing pulley 1 is driven by the drive motor 23.
6 is rotated by the timing belt 19
Is transmitted to the downstream roller 11 and the first downstream timing.
The pulley 14 can be rotated. Furthermore, between
The drive motor 6 of the feed roller 5 as the downstream drive mechanism
Used and driven by a timing belt or gear
6 and the downstream roller 11 and the first downstream timing
Connected to the pulley 14 or the second downstream timing pulley 16
However, in synchronization with the intermittent feed roller 5, the drive motor 6
The downstream roller 11 and the downstream roller 11
And the first downstream timing pulley 14 or the second downstream side
The timing pulley 16 can be rotated. Each tag
Instead of the pulling pulleys 12, 13, 14, 15, 16
Use an endless chain with sprockets
Engage with the proket and use a chain for each sprocket.
Chain and sprockets
Upstream roller 10, downstream roller 11, and dancer
Roller 4 can be rotated to obtain the same operation and effect.
be able to. This device is not limited to the plastic film 1.
To another continuous web and intermittently
Can also be sent to As described above, according to the present invention,
If the continuous web is fed by the intermittent feed roller 5,
Instead of the continuous web,
As a result, the dancer roller 4 is lifted and rises. to this
Therefore, a continuous web is supplied, which is the tension of the continuous web.
Does not affect Therefore, the tension of the continuous web is kept constant.
The continuous web is not stretched. Furthermore, between
When the feed roller 5 and the continuous web stop, the upstream side
Roller 11 synchronizes with it, stops immediately, timing
The dancer roller 4 is braked by the belt 19,
Cirroller 4 also stops immediately. Therefore, continuous web
The vibration and slack of the valve do not occur,
It is possible to achieve the intended purpose.

[Brief description of the drawings] FIG. 1 is an explanatory diagram showing an embodiment of the present invention. FIG. 2 is an explanatory view showing a conventional intermittent feed device. [Explanation of symbols] 1 plastic film 4 Dancer Roller 5 Intermittent feed roller 10 Upstream roller 11 Downstream roller 12 First movable timing pulley 13 1st upstream timing pulley 14 1st downstream timing pulley 15 Second upstream timing pulley 16 Second downstream timing pulley 17 Second movable timing pulley 19 Timing belt 21,23 drive motor

Claims (1)

(57) [Claims 1] An intermittent feed roller for intermittently feeding a continuous web such as a plastic film, and a continuous web feed path to the intermittent feed roller.
A dancer roller that engages with the continuous web, moves in the direction of engagement, and pools the continuous web; and a dancer roller provided upstream and downstream of the dancer roller in the continuous web feed path. Upstream and downstream rollers that engage with the continuous web and guide the continuous web to the dancer roller and the intermittent feed roller, and have substantially the same diameter as the dancer roller. A first movable timing pulley or sprocket formed concentrically with the dancer roller and rotating and moving integrally with the dancer roller; having a diameter substantially the same as the upstream roller, and concentric with the upstream roller. A first upstream timing pulley or sprocket, which is formed integrally with the upstream roller and rotates integrally with the upstream roller, A first downstream timing pulley or sprocket having substantially the same diameter as the downstream roller, formed concentric with the downstream roller, and rotating integrally with the downstream roller, and in a movement direction of the dancer roller; And facing the first upstream and downstream timing pulleys or sprockets at an interval larger than the movement stroke of the dancer roller, and corresponding to the diameter of the dancer roller in a direction perpendicular to the movement direction of the dancer roller. Second upstream and downstream timing pulleys or sprockets spaced apart from each other, having substantially the same diameter as the dancer roller, being located on the movement path of the dancer roller, being coupled to the dancer roller, A second moving integrally with the dancer roller
A movable timing pulley or sprocket, the first movable timing pulley or sprocket, the first upstream and downstream timing pulley or sprocket, the second upstream and downstream timing pulley or sprocket, and the second movable timing pulley or sprocket. And an endless timing belt or chain connecting the timing pulleys or sprockets, and rotating the upstream roller and the first upstream timing pulley or sprocket, or the second upstream timing pulley or sprocket. An upstream drive mechanism that pools the continuous web by the dancer roller; and the downstream roller and the first downstream timing pulley, in synchronization with the intermittent feed roller. Sprockets,
Alternatively, a continuous web intermittent feed device comprising a downstream drive mechanism that rotates the second downstream timing pulley or sprocket and supplies the continuous web to the intermittent feed roller.