JPH058077Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a roll stop position indexing device for stopping the printing cylinder of a printer slotter, the roll of a corrugated board processing machine such as a die cutter roll, at a fixed position. .

"Prior Art" Conventionally, corrugated board processing machines have been designed to be able to pre-position a corrugated board sheet in order to perform processing on a predetermined location. For example, in the case of a printer slotter used as a corrugated board processing machine, in order to print on predetermined locations on the corrugated board sheet and to perform hole punching, the printing cylinder or die cutter is installed in advance before the start of processing. The rolls are rotated by an electric differential to position the printing cylinder and die cutter roll relative to the corrugated board sheet.

However, when the operation was stopped, the various rolls of the corrugated board processing machine, such as the printing cylinder and die cutter roll, stopped at arbitrary positions. For this reason, when changing the printing position or perforation position, in other words, when replacing printing plates or die cutters due to order changes, it is necessary to rotate each roll again to a position where it can be easily removed. The rotation of the machine was carried out manually or electrically by the worker, which required a great deal of effort. Additionally, the electric differential device described above is used to rotate the rolls, but the setting position for processing is different from the position for attaching and removing processing tools such as printing plates, and therefore Since the sensor cannot be used as it is, the motor control circuit of the electric differential device when attaching and detaching the processing tool requires the push button switch SW-F for roll advancement, relay F for forward rotation of the motor, and safety, as shown in Figure 3. It is connected to the break contact r-1b of relay R for reversing the motor, and is also connected to the push button switch for reversing the roll.
SW-R is also the break contact f-1b of the above relay F.
Only the relay R for reversing the motor and the push button switches SW-F and SW- are inserted.
The motor started to rotate while I kept pressing R. As a result, when an electric differential device is used, the worker visually confirms the position of the roll to be stopped, which reduces labor and is not much different from the manual method described above. Various problems arose, including cumbersome operations and poor work efficiency.

``Problems to be solved by the invention'' In view of the above circumstances, the present invention utilizes the electric differential device for positioning during machining as it is, and allows the operator to simply turn on the switch after the operation has stopped. To provide a roll stop position indexing device for a corrugated board processing machine that can automatically rotate to a position where a printing plate or the like can be easily attached and detached without any confirmation by a worker, and can improve work efficiency. With the goal.

``Means to Solve the Problem'' Therefore, in order to achieve the above object, the present invention has developed a relay F for forward rotation of a motor that starts a predetermined roll in the forward direction in a corrugated board processing machine such as a printer slotter.
and a forward switch SW that energizes the relay F.
- F is connected in series with a forward rotation circuit f, which includes a relay R for reversing the motor that starts the roll in the reverse direction, and a switch for reversing the motor that energizes the relay R.
In a roll drive control device for a corrugated board processing machine having a reversing circuit r connected in series with a SW-R, a sensor 8b for detecting a predetermined rotation angle of the roll is installed in parallel with the roll, and the roll is rotated at the angle. The apparatus is provided with a stop circuit for positioning the roll, and the stop circuit includes a detachment position relay CR that energizes the relay F that starts the roll, and a detachment position switch SW-N that energizes the relay CR. are connected in series, and a circuit in which the break contact 8 of the sensor 8b and the first make contact cr-2a of the relay CR are connected in series is connected in parallel to the switch SW-N, The present invention is characterized by a roll stop position indexing device for a corrugated board processing machine, in which the second make contact cr-1a of the relay CR is connected in parallel with the switch SW-F.

Embodiment An embodiment of the roll stop position indexing device for a corrugated board processing machine according to the present invention will be described below with reference to the drawings. FIG. 1 shows an example implemented in a printer. As is well known, in this printer, before the start of printing, the printing cylinder 2 is rotated by an electric differential device 1, and when the sensor 3 or 4 detects a predetermined position, the rotation of the printing cylinder 2 is stopped, and the printing cylinder 2 and the printing cylinder 2 are rotated. The corrugated board sheet fed between the press roll 5 and the corrugated board sheet is positioned at a predetermined position so that printing can be performed. In this embodiment, when the printing cylinder 2 is rotated by the electric differential device 1 during positioning, the press roll 5 is also rotated at the same time via the gears 6 and 7. Therefore, by interposing the sensor 8 on the press roll 5,
After stopping the operation, printing cylinder 2 wrapped with printing plate
It is possible to determine the stop position of the vehicle by using the sensor 8. The sensor 8 is a photoelectric type,
Various types such as a magnetic type can be applied, and the sensor main body 8a is fixed to the wall of the frame 9, while the detection plate 8b is fixed to the shaft of the press roll 5. The detection plate 8b is arranged so that when it comes close to the sensor body 8a, the printing cylinder 2 is located at a position where it is easy for an operator to attach and detach a printing plate. The electric differential device 1 is well known and consists of a motor 1a and a differential device 1b. The differential device 1b is not only composed of a gear group, but also has a circular spline equipped with an internal gear, which meshes with the internal gear of the circular spline, has a different number of teeth, and has elliptical flexibility. A type called a harmonic drive mechanism consisting of a flexspline, an elliptical wave rotatably fitted into the flexspline, and a generator can also be applied. In other words, motor 1a and differential gear 1b
During printing, the printing cylinder 2 can be rotated from the main power source via the driven gear 10 and the differential device 1b.

The sensor 8 (break contact) is inserted into a circuit that causes the electric differential device 1 to move forward, that is, rotate forward, as shown in FIG. The circuit shown in FIG. 2 is a different circuit from the control circuit of the electric differential device 1 for positioning the printing cylinder 2 with respect to the corrugated sheet before starting printing.
A sensor 8 and the like are added to the conventional circuit shown in FIG. 3 for rotating the printing cylinder 2 to a position where the printing plate can be easily attached and detached after printing is completed.
The same parts as in Fig. 3 are given the same reference numerals and are shown in Fig. 2.
To explain with reference to the figure, between the power lines L ₁ and L ₂ ,
A push button switch SW-N for the attachment/detachment position and a relay CR for the attachment/detachment position are inserted. First make contact cr- of relay CR for attachment/detachment position
1a is connected in parallel with the forward push button switch SW-F. The second make contact cr-2a of the relay CR for the attachment/detachment position is connected in series with the sensor 8, and this series circuit is connected in parallel to the push button switch SW-N for the attachment/detachment position.
In addition, in FIG. 2, B is a thermal relay (or overcurrent relay).

After the printing is finished, the rolls such as the printing cylinder 2 are stopped at arbitrary positions. When separating each component device that is connected to each other, such as when separating the slotter from the printer,
Press the push button switch SW-N for the above-mentioned attachment/detachment position. Then, the attachment/detachment position relay CR is energized and its respective make contacts cr-1a and cr-2a are closed. Upon closing of the first make contact cr-1a,
The motor forward rotation relay F is energized to drive the motor 1a shown in FIG. Make a rotation. When the second make contact cr-2a is closed, the push button switch SW-N for the attachment/detachment position is self-held.
Break contact f- is activated by motor forward rotation relay F.
1b is opened and the push button switch for retracting the roll is released.
Motor reverse relay R is not energized even if SW-R is pressed. The press roll 5 rotates and the detection plate 8b
When the sensor body 8a approaches the sensor body 8a, the sensor body 8a, that is, the sensor 8 opens, and the self-holding of the push button switch SW-N for the attachment/detachment position is released, and as a result, the relay for the attachment/detachment position is released.
Since CR is deenergized, each make contact cr-1a, cr
-2a opens, and this first make contact cr-1a
When the relay F is released, the relay F for normal rotation of the motor is deenergized, the driving of the motor 1a is stopped, and the rotation of the printing cylinder 2 and the press roll 5 is stopped. Sensor body 8
Since the proximity position of the detection plate 8b to a is set in advance so that the printing plate wound around the printing cylinder 2 can be easily attached and detached, the position where the rotation of the printing cylinder 2 has stopped is the position where the printing plate can be easily attached and detached. It's an easy position. The printing plate is replaced at this position.

In addition, in the present invention, in the case of a type in which only the printing cylinder 2 can be rotated by the electric differential device 1,
The sensor 8 may be attached to the printing cylinder. Further, the first make contact cr-1a can be connected in parallel to the roll retraction push button switch SW-R. Furthermore, the present invention can be applied not only to the printing cylinder 2 described above, but also to various rolls of a corrugated board processing machine, such as a slotter roll and a die cutter roll.

``Effects of the invention'' As described above, according to the roll stop position indexing device for a corrugated board processing machine according to the present invention, the existing electric differential device can be used as is, and the circuit configuration can be simple. Not only can it be easily attached to an existing corrugated board processing machine, but the operator can simply press a button, eliminating the need for workers to check the roll stop position with their own eyes. Even if the operator is away from the location, the machine automatically stops at a position where it is easy to attach and detach processing tools, etc., making it extremely convenient to use.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of the roll stop position indexing device for a corrugated board processing machine according to the present invention, Fig. 2 is its circuit diagram, and Fig. 3 is a circuit showing a conventional roll stop position indexing device. It is a diagram. 1... Electric differential device, 2... Printing cylinder, 5
...Press roll, 8...Sensor (break contact), SW-N...Push button switch for attachment/detachment position, CR...Relay for attachment/detachment position, cr-1a
...First make contact, cr-2a...Second make contact.

Claims (1)

[Claims for Utility Model Registration] In a corrugated board processing machine such as a printer slotter, a relay F for forward rotation of a motor that starts a predetermined roll in the forward direction and a switch for forward rotation that energizes the relay F.
It has a forward rotation circuit f connected in series with SW-F,
In a roll drive control device for a corrugated board processing machine, the roll drive control device includes a reversing circuit r in which a relay R for reversing the motor that starts the roll in the reverse direction and a switch SW-R for reversing the motor that energizes the relay R are connected in series. , A sensor 8b for detecting a predetermined rotation angle of the roll is arranged in parallel with the roll, and a stop circuit for positioning the roll at the angle is provided in the device, and the stop circuit has a relay F for starting the roll. A relay CR for the attachment/detachment position to be energized and a switch SW-N for the attachment/detachment position to energize the relay CR are connected in series, and the break contact 8 of the sensor 8b and the first make of the relay CR are connected in series. A circuit in which the contacts cr-2a are connected in series is connected in parallel to the switch SW-N, and the second make contact cr-1a of the relay CR is connected in parallel to the switch SW-F. A roll stop position indexing device for a corrugated board processing machine.