JPH0337958Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic cleaning device for a dampening brush roller of an offset printing machine.

Conventionally, the dampening water brush rollers have been cleaned by removing them from the printing machine at intervals of about two weeks and scrubbing them with a hand-washing brush after washing them with detergent on the sink, as they become stained with printing ink and the like. However, in this method, since the brush roller is not rotated, the brush roller is inevitably rubbed in the axial direction, which tends to damage the bristles of the brush roller, and has the drawback that cleaning requires a long time.

The present invention aims to provide an automatic brush roller cleaning device that is operationally safe and can quickly clean the brush rollers without damaging them. Therefore, in the present invention, the two brush rollers are rotated while contacting each other,
Compressed air is used as the driving source. Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of the present invention. In the figure, 1 and 2 are brush rollers,
Although not shown, brush bristles are planted on its surface. 3 is a journal, on which both ends of the brush rollers 1 and 2 are placed (see Fig. 4). A stopper 4 connects and fixes the brush rollers 1, 2 and the journal 3 (see Fig. 3). 5 is an air motor, 6 is a chain,
These constitute a driving section and rotate the brush rollers 1 and 2 via the journal 3. The brush rollers 1 and 2 are arranged in parallel so as to be in contact with each other, and at least one of them is driven to rotate so that both brush rollers 1 and 2 are rotated while being in contact with each other. The rotational speed of the air motor 5 is adjusted by air pressure, and the air motor 5 is started and stopped by opening and closing a cock (not shown) attached to the air motor. Reference numeral 7 denotes a stay (support rod) to which the journal 3 and air motor 5 are attached via a brush roller bracket 8 and an air motor bracket 9 (see Fig. 2). 10 indicates a journal bearing provided on the brush roller bracket 8. In this way, the stay 7 with the main parts of the automatic cleaning device attached is placed on the sink 11. The sink 11 is filled with water containing detergent, and the air motor 5
When you open the pot, you will see two brush rollers 1 and 2.
rotates and automatic cleaning is performed.

FIG. 2 is a schematic side view of the stay 7 to which the main parts of the automatic cleaning device are attached. As described above, the stay 7 is provided with a brush roller bracket 8 and an air motor bracket 9 having a journal bearing 10 for mounting the journal 3 and the air motor 5. In the illustrated example, the brackets 8 and 9 are provided on opposite sides of the stay 7, but the invention is not limited to this. Although not shown, the air motor 5 can be covered with a suitable cover.

FIG. 3 is a partial sectional view of the stopper 4.
The stopper 4 consists of a thumb screw 4 ₁ and a short tube 4 ₂ into which the screw can be screwed. FIG. 4 is an enlarged view of the journal 3. A collar ₃₀ is fixed to one end of the journal 3, and its diameter is made larger than the diameter of the journal bearing 10 provided on the bracket 8. The journal 3 is provided with three portions 3 _{1 , 3} 2 and 3 ₃ having different cross sections in order to place and connect and fix both ends of the brush rollers 1 and ₂ on the other end thereof. 1st
The part 3 ₁ is a part inserted into the bearing 10 and has a circular cross section, and the second part 3 ₂ is a cross section (B-B line)
is BB, and the cross section (A-A line) of the third portion ₃₃ is AA. Before installing brush rollers 1 and 2 on journal 3, stopper 4
is fixed to the second part 3 ₂ . When installing the brush rollers, place both ends of the brush rollers 1 and ₂ on the third part 33 of the journal 3, loosen the stopper screw ₄₁ , and move the stopper short pipe ₄₂ toward the third part _33. Tighten the screws 4 _{and 1} on the stopper and remove the journal 3 and brush rollers 1 and 2.
(See Figure 1).

As explained above, according to the present invention, the brush rollers 1 and 2 are removed from the printing machine, both ends of the brush rollers 1 and 2 are placed on the journal 3, and the two are connected by the stopper 4, and the entire apparatus is moved to the printing machine.
1, the air motor 5 is opened, and the two brush rollers 1 and 2 are rotated while being in contact with each other, so that cleaning can be performed automatically and quickly without damaging the brush bristles. . Moreover, since the air motor 5 is used, it is safer to operate than an electric motor.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified and changed in various ways without departing from the gist of the invention as set forth in the claims for utility model registration.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a schematic side view of the main parts thereof, FIG. 3 is a partial sectional view of the stopper, and FIG. 4 is an enlarged view of the journal. 1, 2... Brush roller, 3, 4, 8, 10
...Brush roller mounting bearing part, 5...Air motor, 5, 6...Driving part.

Claims (1)

[Scope of utility model registration request] A brush roller mounting bearing part that allows two brush rollers for dampening water of an offset printing machine to be rotatably mounted in parallel in contact with each other, and at least one rotating shaft of the brush rollers is rotationally driven by an air motor. 1. An automatic brush roller cleaning device for an offset printing machine, comprising a drive unit, and cleaning two brush rollers at the same time by rotating the brush rollers in contact with each other.