JP2900265B2 - Precision adjustment method for the tip of hard blade for cleaning - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically adjusting the accuracy of the tip of a blade-shaped object in a cleaning device.

[Prior art] Conventionally, as a blade-shaped object that is brought into contact with a curved surface or a flat surface and used, there are a wiper of a car, a squeegee of a doctors screen printing machine of a gravure printing machine, and the like.
Since the main purpose is to wipe off, the type of the blade-shaped object may be rubber, very thin blade steel, soft resin, or the like, and the accuracy of the tip is corrected by the deflection of the blade itself. However, when a blade-shaped object is used for cleaning a cylinder or a roller in a printing press, a blade made of a soft material as described above cannot apply a strong force and cannot be cleaned. Therefore, it was necessary to change the material of the blade to a metal or a resin having a high hardness and to make the shape somewhat thick. When such a blade is used, not only the tip accuracy of the blade is improved but also the contact force between the blade and the curved surface or the flat surface is not sufficiently transmitted unless the precision is sufficiently increased. Therefore, when the apparatus is introduced or the blade is replaced, a great deal of labor is required to adjust the hit precision, so that the introduction of the apparatus is troublesome and a considerable cost is required.

[Problems to be Solved by the Invention] Introducing a blade crimping type apparatus requires a great deal of labor and cost because it is very troublesome to adjust the accuracy of the contact between the blade and a curved or flat surface. Therefore, in the present invention, this problem is to be solved by a method for automatically adjusting the accuracy of the tip of a blade-shaped object.

[Means for Solving the Problems] In order to automatically adjust the accuracy of the tip of a blade-shaped object, a cushion such as an air pad, an oil pad, a sponge pad, or a spring is provided between a jig for holding the blade and the blade. The use of air cylinders, oil cylinders, etc., which enable the pressure to be adjusted uniformly over the material and the entire width, gives the blade its own flexibility and forcibly translates or displaces the blade. Crimp on a curved or flat surface.

Embodiment An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view showing a state in which a blade in a cleaning device according to the present invention is pressed against a printing press impression cylinder, FIG. 2 is an enlarged sectional view of a blade holding portion in FIG. 1, and FIG. FIG. 3 is a perspective explanatory view of a cleaning cloth 4, a magazine roll 5,
The take-up roll 6 is configured in the same manner as that of the conventional apparatus. However, as a wire crimping apparatus, by combining a guide rail and a coil spring at one end of a mountain-shaped support, the contact accuracy with the impression cylinder surface can be automatically adjusted. The cleaning cloth 4 delivered from the magazine roll 5 is linearly pressed to the impression cylinder 1 by a blade 8 adapted to be adjusted in a linear manner. The other end located on the take-up roll side is used as a guide portion 9, and the cleaning cloth 4 is pressed onto the impression cylinder 1 so as to form a press-contact portion in an arc shape 10 along the circumference of the impression cylinder, and is guided. It is configured to wind up. In other words, the cleaning device according to the present invention comprises a cleaning cloth 4 for directly removing dirt on the surface of the impression cylinder, a magazine roll 5 from which the cleaning cloth is gradually wound, and a cleaning roll for winding and holding the cleaning cloth. A blade 8 with an automatic precision adjustment function for wire-pressing the take-up roll 6 and the cleaning cloth to the impression cylinder, a pad 19 for surface-pressing the cleaning cloth to the impression cylinder, and a cleaning liquid supply as a means for moistening near the cleaning cloth. Nozzle 12, blade 8 and pad 19 provided on pipe 11, and cleaning liquid supply pipe
A claw mechanism mounting recess of the impression cylinder 1, comprising a mountain-shaped support 7 provided with a guide 9 for holding the support 11, a magazine roll 5, a take-up roll 6, and a frame 13 for supporting the support 7.
A claw shaft 2 and a claw 3 attached to the claw shaft 2 are provided on 1a. Further, a claw escape cam 14 is attached to the claw shaft 2. The nail relief cam 14 can be attached to the side surface of the impression cylinder if the size or the like is slightly changed. Also, in order to prevent the cleaning device from coming into contact with the impression cylinder at least during high-speed rotation, an air cylinder as a moving system for the purpose of detaching the device and a cleaning cloth are moved step by step.
In addition, a one-way clutch and an air cylinder are used for winding, but the mechanism is well known, and other mechanisms such as a rotary actuator may be used separately. Omitted. In the drawings, reference numeral 15 denotes a rotating shaft for moving the frame 13 toward and away from the impression cylinder 1.

Each component of the present embodiment will be specifically described as follows.

Cleaning cloth 4 The cleaning cloth 4 is used to directly remove dirt from the impression cylinder by contacting the impression cylinder.

The magazine roll 5 is equipped with a mechanism that allows the cloth to be easily attached and detached while maintaining the roll shape. When the cleaning cloth is gradually unwound from the magazine roll,
It has a brake mechanism to prevent loosening.

Take-up roll 6 The used roll can be easily attached and detached, and the winding direction is the direction opposite to the rotation of the impression cylinder.

Cleaning Cloth Compression Means In this embodiment, a guide rail 16 is provided at one end of the mountain-shaped support 7, and a coil spring 17 and a blade 8 are accommodated in the guide rail 16. The blade is designed so as to uniformly contact the impression cylinder surface by expansion and contraction of the coil spring 17, and the cleaning cloth 4 is linearly pressure-bonded to the impression cylinder surface by the blade. For details, as shown in FIGS. 2 and 3, the guide rail 16 is mounted on the support 7 by a guide groove in which the blade 8 can slide.
The blades 8 are fixed to the blade 8 by pressing the blade 8 in the direction of the impression cylinder 1 with the spring 17 positioned between the bottom of the guide groove and the blade 8. In addition,
Even when the blade 8 does not come into contact with the impression cylinder, the guide pin 8a implanted in the blade is engaged with the long groove 16b provided on the guide rail 16 so that the blade 8 does not protrude from the guide groove 20. Keep it. Further, the cleaning cloth 4 is pressure-bonded to the impression cylinder surface by a pad, thereby improving the transferability of dirt to the cloth and improving the dirt holding power of the cloth. In this embodiment, a pad is used as the surface pressure bonding mechanism, but a sponge roll or an air pad may be used.

Further, the other end of the chevron support is used as a guide portion 9 so that the cleaning cloth 4 contacts the impression cylinder 1 in an arc shape. The blade 8 and the guide portion may be separately mounted on the frame 13 without using the chevron support.

Means for tightening the cleaning cloth with the cleaning liquid The cleaning liquid supply pipe 11 and the nozzle 12 are provided with a mechanism for improving the cleaning effect by moistening the cleaning cloth with the cleaning liquid and preventing the cleaning plate from being sprayed other than the impression cylinder. In the embodiment, the support is attached to the back surface of the mountain-shaped support 7, but can be provided at an appropriate position outside the cleaning device.

The blade 8 is guided and held at one end of the chevron support 7, and the cleaning cloth 4 is pressed against the impression cylinder 1 using the other end as the guide 9, and a cleaning liquid nozzle is attached to inject the cleaning liquid into the cleaning cloth.

Claw relief cam 14 At least two claw relief cams 14 having a larger surface profile than the claw are fixed to the claw shaft 2 near the claw 3. Further, the cam may be such that the cleaning liquid 4 can smoothly pass over the claw portion even if only the tip of the claw 3 contacts, or the mounting position may be on the side of the impression cylinder.

The cleaning device according to the present invention is configured as described above, and in cleaning the impression cylinder, the cleaning cloth 4 pressed by the blade 8 with the adjusting function and the pad 19 at the claw portion is the surface of the claw escape cam 14. , And the nail edge can be washed without coming into contact with the nail 3. Further, the blade is provided with a function of automatically adjusting the contact accuracy, so that the device can be easily introduced.

[Effects of the Invention] In a printing press, when pressurizing a blade and using it as a pressure bonding mechanism as in the operation of cleaning a cylinder or a roller, the contact accuracy between the blade tip and a curved surface or a flat surface is kept very high. Needed.

Therefore, when installing equipment or replacing blades,
It required a great deal of labor, time and installation costs. Therefore, in the present invention, these problems have been solved by providing the blades with an automatic adjustment function of the accuracy of the blades themselves. Therefore, introduction of the apparatus, maintenance, and the like are facilitated, and a blade-like object can be easily used as a crimping mechanism.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a state in which a blade in a cleaning apparatus according to the present invention is pressed against a printing press impression cylinder, FIG. 2 is an enlarged sectional view of a blade holding portion in FIG. 1, and FIG.
It is a perspective explanatory view of a figure. 1 ... impression cylinder, 7 ... blade support, 8 ... blade, 8a ... guide pin, 13 ... frame, 16 ... guide rail, 16b ... long groove, 17 ... spring, 20 ... guide groove.

Claims (1)

(57) [Claims] A hard blade for pressing a cleaning cloth moving stepwise between a magazine roll and a take-up roll against an object to be cleaned is slidably fitted in a guide groove provided in a support; Along with holding the guide groove so as not to be detached, a plurality of springs and the like are positioned between the blade and the guide groove bottom so as to uniformly press the blade in the width direction toward the object to be cleaned. Characteristic adjustment method for the tip of the hard blade for cleaning.