JPS6236544Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to apply transfer materials such as glue, ink, coating agent, etc. in a container to the sheet while it is running, and to remove the transferred materials from the adhesive roll onto the sheet. The present invention relates to a device for adjusting the portion of transferred matter adhering to an adhesion roll that can be automatically adjusted in response to changes in width and sheet position.

In corrugating machines, printing machines, coating machines, etc., when adhering transferred materials such as glue, ink, coating agent, etc. to a running web such as a liner using an adhesion roll, the part of the transferred material attached to the adhesion roll is attached to the running web. It is necessary to adjust according to changes in width or lateral wobbling of the web. For example, in a corrugating machine, when a gluing roll applies glue to the corrugated top of a liner corrugated by corrugated rolls, and another liner is pasted to this corrugated running liner, the gluing It is necessary to adjust the adhesion width and adhesion position of the glue to be applied to the roll according to changes in liner width due to lot changes, etc., or liner lateral wobbling.

Conventionally, the glued roll in a corrugating machine is immersed in a glue bath as is well known, and in order to avoid glue from adhering to unnecessary parts of the roll, the size of the glued roll in a corrugating machine is approximately equal to the glue adhesion width of the liner. 2 apart
Two dams are provided, and the area to which glue is applied (adhesion width and adhesion position) is regulated by the interval between these two dams. These two dams are each made of a plate material with a part made of wear-resistant material to avoid wear due to contact with the outer circumference of the glue roll, and the glue in the glue tank is dammed up by the two dams. The inside of the glue tank is formed so that the glue can be applied only to the required width of the glue roll.

A conventional glue adhesion adjustment device for a glue roll uses a pair of detection means for respectively detecting both ends of the liner to be rolled up as a predetermined position, and a pair of reversible motors for independently moving each dam. The reversible motors are controlled based on the detection signals from the respective detection means to move the respective dams and adjust the portion of the glue application roll to which the glue is applied. The above-mentioned pairs of reversible motors are each attached to a fixed screw shaft installed parallel to the glue roll shaft above the glue tank via a pair of movable plates that cannot rotate around this screw shaft. . The drive of the reversible motor is transmitted to the movable plate by a transmission mechanism using a chain and sprocket wheel, so when the reversible motor is driven, the movable plate meshing with this screw shaft and the movable plate are integrated. The reversible motor and dam move in the axial direction of the screw shaft.

The conventional devices as described above have the following drawbacks.

(1) While the corrugating machine is operating, the glue scattered from the glue roll adheres to the reversible motor, so this adhered glue is removed after work or periodically, but the adhered glue can be removed by washing with water. if,
Since the current-carrying parts of the reversible motor may get wet and cause accidents such as electrical leakage, the reversible motor cannot be washed with water, making it extremely difficult to remove adhesive.

(2) Since the reversible motor moves with the movable plate, there is some slack in the wires connected to the reversible motor, but this wire must be arranged so that it will not be damaged even if it comes into contact with machinery, etc. . Furthermore, since the slack in the electric wires becomes a hindrance, it is difficult to perform various adjustments and operations around the conventional device.

(3) Since the reversible motor is installed above the glue tank, this reversible motor gets in the way, resulting in limited space and poor visibility for the operator to see behind the device. Therefore, problems arise in the maintenance and inspection of screw shafts, cleaning of glue rolls, etc., and checking of the corrugated state of the liner performed by the corrugated rolls at the rear of the apparatus.

(4) A pair of movable plates, reversible motors, and dams are each integrated, and each integrated unit is controlled independently, so they may collide with each other or cause damage to the equipment frame or glue tank. The device collides with the side wall of the device, resulting in overload and damage to the device.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for adjusting the portion of transferred matter adhering to an adhesion roll in order to eliminate the above-mentioned drawbacks.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention, particularly examples of gluing rolls for corrugating machines, will be described with reference to the accompanying drawings.

As shown in the figure, the traveling liner A passes through rolls 1 and 2 and is corrugated into corrugated rolls by a pair of corrugated rolls 3 and 4. The top of the stepped liner A is glued by a gluing roll 6 partially immersed in the glue in the glue tank 5, and is crimped with another liner B traveling from one side by a pressure roll 7. It is twisted and glued. A doctor roll 8 located above the glue tank surface contacts the glue roll 6 to scrape off excess glue and adjust the amount of glue adhering to the glue roll 6.

Two dams 9a and 9b are provided in the glue tank 5 to dam the glue inside, and these dams 9a and 9b
A gluing roll 6 is rotatably installed astride the. An overflow wall 10 is provided at one end of each dam 9a, 9b, and a contact portion 11 of the dam 9a, 9b that contacts the gluing roll 6 is made of a highly wear-resistant material such as Teflon.

Above the two dams 9a, 9b, a pair of screw shafts 12a, 12 are arranged parallel to the axial direction of the pasting roll 6.
b is provided, and both ends of each are connected to the device frame 1.
It is rotatably supported by bearings 14 fixed to 3.

A sprocket wheel 15a is attached to one end of the screw shaft 12a (on the right side in FIG. 3), and a sprocket wheel 15a is also attached to the screw shaft 12b.
A sprocket wheel 15b is fixed to one end (left side in FIG. 3) by appropriate means,
Each sprocket wheel 15a, 15b is connected to a reversible motor 17a, 1 via a chain 16a, 16b.
The reversible motors 17a, 17b are connected to rotating shafts 18a, 18b of the apparatus frame 13, and are fixed to motor supports 19a, 19b mounted at appropriate positions on the device frame 13.

The threaded shafts 12a, 12b have threaded portions 20a, 20b formed between their substantially central portions and the sprocket wheels 15a, 15b, respectively.
Movable members 21a and 21b, which move as the screw shafts 12a and 12b rotate, are screwed into the movable members 0a and 20b. The movable members 21a and 21b include edge detection means 22 for detecting edges of the liner A.
Sensor support plates 23a and 23 with a and 22b attached
b, and each dam 9 with fixing screws 24a and 24b.
The dam fixing plates 25a, 25b that fix the screw shafts 12a, 9b protrude, and the rotation prevention members 26a, 26b that prevent the movable members 21a, 21b from rotating around the screw shafts 12a, 12b respectively. 12a and 12b. These members 26a and 26b are the threaded portion 2 of the threaded shaft 12b12a.
Since it slides on the cylindrical part on the opposite side to 0b and 20a,
The movable members 21a, 21b move smoothly in the axial direction.

Also, a limit switch 2 is installed approximately at the center of the two screw shafts 12a and 12b as an overload prevention means.
Switch support members 28a and 28b, on which the limit switches 7a and 27b are respectively attached, are mounted immovably across the screw shafts 12a and 12b by appropriate means, and the limit switches 27a and 27b are attached to the movable members 21a and 2
When 1b approaches the central part, movable members 21a, 2
It comes into contact with detection plates 29a and 29b fixed to 1b as overload prevention means. Similarly, frame 1
3 are equipped with limit switches 30a, 30b as overload prevention means, and these limit switches 30a, 30b act as overload prevention means fixed to the movable members 21a, 21b when the movable members 21a, 21b approach the ends. detection plate 31a,
31b. Limit switch 27 above
a, 27b, 30a, 30b are movable members 21
By limiting the movement range of the reversible motors 17a and 21b to prevent collisions with other objects,
This is to prevent overload on the limit switch 17b, and the limit switch and detection plate may be replaced, or other detection means such as an optical sensor may be used.

The edge detection means 22a, 22b respectively connect both ends of the running liner A to a pair of phototubes 32a, 3.
A pair of reversible motors 1 by tracking detection with 2b
7a and 17b are each independently controlled.

The movement of the dam with tracking detection at both ends of liner A is similarly controlled, so only one end will be discussed next.

As shown in FIGS. 4a, b, and c, a pair of phototubes 32a and 32b are provided near one end of the liner A at a distance from each other, and as shown in FIG.
If the liner A covers both phototubes as shown in FIG. 4b, both phototubes 32a are controlled so that the liner ends are located between the photocells 32b and 32b. , 32b are moved in the X direction. At this time, the dams that are integrated with both photocells will also be moved together. When the liner ends come off from both photocells as shown in Figure 4c, both photocells 3.
2a, 32b and the dam integral therewith are moved in the Y direction. Therefore, the accuracy improves as the distance between the two phototubes becomes narrower. Furthermore, there is a method in which a countless number of sensors such as phototubes are arranged and fixed in the horizontal direction so that the dam is constantly moved to the sensor position that detects the sheet edge, or a method is adopted in which the dam is detected by tracking and detecting markings formed in advance on a predetermined position on the sheet. You can also consider the method of moving it.

The above control circuit is designed so that if the web stops running due to the corrugating machine itself stopping, or if the web is cut due to an accident, the dam and the phototube integrated with it will immediately stop due to an electrical interlock. It's getting old,
The lock is automatically released when web running resumes.

Next, to describe the operation of the dam moving mechanism in the present invention, as described above, the edge detection means 22
When the phototubes 32a and 32b as a detect the positional displacement of the liner A in the width direction, the reversible motor 17
a rotates in the required direction, and that rotation causes chain 1
6a to the sprocket wheel 15a. Since this sprocket wheel 15a is fixed to the screw shaft 12a, the screw shaft 12a rotates, but the movable member 2 screwed onto the screw shaft 12a rotates.
1a is the screw shaft 12a by the rotation prevention member 26a.
Since rotation around the movable member 21a is impossible, the movable member 21a
moves in the axial direction along the screw shaft 12a. Since the dam 9a is fixed to the movable member 21a via the dam fixing plate 25a, the dam 9a moves together with the movable member 21a, and changes the portion of the glue application roll 6 in the width direction of the liner A. It is being changed accordingly.

As mentioned above, the displacement in the width direction of both ends of liner A is detected by two phototubes 32a and 32b, and if the liner end moves, the end of liner A is always located between the two phototubes. The dams 9a and 9b are respectively moved in the axial direction of the gluing roll so as to move.

Although a phototube is used as the detection means in the embodiment of the present invention, a proximity switch, pneumatic sensor, or limit switch may be used instead. In addition, although a pair of sensors were provided near each end of the sheet in the embodiment, it is also possible to use a sensor that itself has two functions, that is, a single sensor whose dead zone is sandwiched between two sensing ranges. good. Particularly in the case of pneumatic sensors or limit switches, one at each end is sufficient. Alternatively, a mark may be placed on the sheet in advance and detected by a sensor. Furthermore, as a means for preventing overload of the motor, a torque limiter may be used that slips against the rotating shaft of the motor so that the rotation of the reversible motor is not transmitted to the screw shaft when the load exceeds a certain level.

According to the present invention, as described above, two screw shafts are provided above the glue tank, and a pair of reversible motors fixed to the device frame or foundation etc., which rotate each screw shaft independently, prevent the glue from scattering. Since the reversible motor is fixed in a position where it is difficult to receive water, there is almost no need to clean the reversible motor, and the pair of screw shafts located above the glue tank can be washed with water, significantly improving cleaning efficiency. In addition, since the reversible motor is not attached to the movable member provided on the screw shaft, the electric wires of the reversible motor, etc. need only be fixed to the device frame in advance, and the line of sight to the rear of the device is not cut off. Wiring is very simple, and there is no problem of damage or loose wires that get in the way, unlike in the past, and it is easy to check the liner stage status.

The above-mentioned movable member has its anti-rotation member engaged with the cylindrical portion of the screw shaft, so the movable member can slide smoothly on the screw shaft, and the reversible motor is not located in the narrow part above the glue tank. Therefore, the space above the glue tank becomes sufficiently large, allowing for maintenance, inspection, and cleaning of the screw shaft, etc., and efficiency in various adjustment work around the device of the present invention and confirmation of stage progress. improves. Further, there is an effect that the device will not be damaged due to overload applied to the reversible motor.

[Brief explanation of the drawing]

The drawings show one embodiment of the device according to the present invention. FIG. 1 is a side view showing the entire device, FIG. 2 is a front sectional view enlarging the main part of FIG. 1, and FIG. FIG. 4, which is an enlarged plan sectional view of a main part, is an explanatory diagram showing an example of sheet edge detection. 1, 2...Roll, 3, 4...Corrugated roll, 5...
...glue tank, 6...glue roll, 7...pressure roll,
8...Doctor roll, 9a, 9b...Dam, 1
0...Overflow wall, 11...Contact part, 12
a, 12b...Screw shaft, 13...Device frame,
14...Bearing, 15a, 15b...Sprocket wheel, 16a, 16b...Chain, 17
a, 17b... Reversible motor, 18a, 18b...
Rotating shaft, 19a, 19b...Motor support base, 20
a, 20b...Threaded portion, 21a, 21b...Movable member, 22a, 22b...Edge detection means, 23
a, 23b...sensor support plate, 24a, 24b...
...Fixing screw, 25a, 25b...Dam fixing plate, 2
6a, 26b... Rotation prevention member, 27a, 27
b, 30a, 30b...limit switch, 28
a, 28b...Switch support member, 29a, 29
b, 31a, 31b...detection plate, 32a, 32b
...Phototube.

Claims (1)

[Scope of utility model registration request] In a device that automatically adjusts the adhesion part of the transferred material to the adhesion roll immersed in the transferred material in a tank containing the transferred material in order to adhere the transferred material such as glue to a running web such as a liner, the inside of the tank is A pair of dams movable in the axial direction of the roll and damming up the transferred material to limit the adhesion range of the transferred material to the roll, and a pair of detection means for detecting a predetermined position in the width direction of the web in response to signals. A pair of reversible motors are fixed to the equipment frame or foundation for operation, and a pair of screw shafts are provided above the tank parallel to the deposition roll shaft and rotate in conjunction with each reversible motor. and a pair of movable members that are respectively engaged with the threaded portions of the screw shafts and are movable in the axial direction of the screw shafts and are non-rotatably fixed to the pair of dams, respectively, and the pair of reversible motors. An apparatus for adjusting a portion of transferred matter adhering to an adhesion roll, comprising overload prevention means provided respectively to prevent overload of the adhesion roll.