JPH088106Y2 - Blanket washer retractor - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an evacuation device for a blanket washing machine, and more particularly to an evacuation device capable of simultaneously performing an operation of winding a cleaning cloth and an operation of evacuation for replacement of blanket rubber.

[0002]

2. Description of the Related Art Generally, in offset printing, a blanket is washed to remove ink debris and paper dust every fixed number of prints. When wiping and cleaning with a cleaning cloth with such a cleaning device, the cleaning cloth unwound from the unwinding roll is wound around the take-up roll after passing through the pressing part to the blanket cylinder. It is wound intermittently by the device. In this winding operation, the washing machine is moved backward and the pressing portion is separated from the blanket cylinder so that the washing cloth can be wound.

Conventionally, an engagement mechanism is provided between the printing machine frame and the washing machine in order to wind up the washing cloth in the washing machine. This allows the washing machine to move forward and backward with respect to the blanket cylinder, and guides it so as to move away from the cylinder when the washing cloth is wound up. Then, the washing machine is moved forward and backward as a whole by a mechanical driving force.

Alternatively, instead of the engagement mechanism, the pressing portion of the cleaning cloth can be expanded and contracted so that air is supplied and discharged, and at the time of winding, the air is removed from the pressing portion to separate from the blanket cylinder and become the cleaning cloth. There is also known a structure in which slack is generated and wound.

By the way, the washing machine needs to be retracted during the above-mentioned winding operation of the washing cloth. However, when the blanket rubber is replaced, the retracting position by the engagement mechanism hinders the work. Was removed from the engagement mechanism to form a work space, or a rail for retreating was separately formed, and the rail was moved to retreat largely.

[0006]

However, in the above-mentioned prior art, when the work of replacing the blanket rubber is performed as described above, it is necessary to remove the main body of the cleaner from the printing machine, and the detaching work is a manual operation. There was a problem that became unstable and complicated. Even when the retracting rail is provided, the retracting operation required by the engagement mechanism and the retracting operation required for blanket replacement work are basically the same, but both mechanisms were formed separately, The device structure was complicated. Also, in the method of removing the washing machine, especially for replacing the blanket rubber,
There is a drawback that defects such as dripping of the cleaning liquid occur.

Further, in the recent small-sized printing press, there is a case that a sufficient installation space cannot be provided for incorporating the retracting device separately from the engagement mechanism when the blanket is replaced.

Further, in the method of evacuating the air in the pad of the pressing portion instead of the engagement mechanism, the pressure inside the pressing portion is changed, the cleaning effect is lowered by the change of the nip pressure, and the sag of the cleaning cloth is generated. It becomes difficult to wind a certain amount.

The present invention focuses on the above-mentioned conventional problems, and does not reduce the cleaning effect by keeping the internal pressure of the pressing portion unchanged and does not cause the cleaning cloth to sag. A blanket which can realize the backward movement for winding up the blanket and the retracting operation of the washing machine for the work such as replacement of the blanket rubber with a single configuration, and thus the engagement mechanism can be omitted. It is an object of the present invention to provide a retractor for a washing machine.

[0010]

In order to achieve the above object, a retractor for a blanket washing machine according to the present invention comprises a washing machine body having a pressing portion for a blanket cylinder, a winding roll for washing cloth, and the like. Side plate blanket
A swing link connected to the front part near the binder and a telescopic link capable of telescopic operation connected to the rear part of the side plate farther from the blanket cylinder are provided. Fixed play facing the side plate
Pivotally attached to the base plate to allow the washing machine body to move back and forth with respect to the blanket cylinder by the expansion and contraction operation of the expansion link , and the pivotally connected part of the expansion link to the fixed plate is rotatably attached to the fixed plate. It is indirectly connected to the fixed plate via the rotating lever, and by rotating the rotating lever with respect to the fixed plate, the pivoting portion of the telescopic link can be swung to retract the washing machine body. It is what

[0011]

According to the above construction, when the cleaning cloth is intermittently wound up in the cleaning machine, the retractable link is retracted. That is, when the telescopic link connected to the rear part of the washer side plate is pulled in, the rear part of the washer body is lowered, and at the same time, the swing link connected to the front part of the side plate is tilted rearward. As a result, the main body of the washing machine is tilted, and the tip pressing portion is separated from the blanket cylinder. Therefore, the pressing force of the cleaning cloth to the cylinder is released, and the constant-size winding mechanism can perform the winding operation.

On the other hand, when the blanket rubber is replaced, the pivot lever connected to the end of the telescopic link is rotated with respect to the fixed plate to lower the pivotally attached portion of the telescopic link itself. Can be moved to. By the overall backward movement of the telescopic link, the swing lever is further tilted rearward, the washing machine body is tilted and retracted as a whole, and a large space can be formed between the washing machine body and the blanket cylinder. Of. This space can be used as a work space for exchanging blanket rubbers and the like, and the main body of the washing machine does not hinder the work.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a retractor for a blanket washing machine according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a washing operation state by the blanket washing machine. As shown in this figure, the washing machine main body 1
No. 0 is provided with a semi-cylindrical pressing member 14 along the longitudinal direction of the blanket cylinder 12, and a cleaning cloth 16 can be passed through the outer surface of the pressing member 14 to press it against the blanket cylinder 12. Then, the pressing member 14 and the cleaning cloth 16
An injection nozzle pipe 17 for supplying the cleaning liquid to the contact portion with is arranged in parallel with the pressing member 14. The cleaning cloth 16 is fed from a feeding roll 18 arranged behind the pressing member 14, passes through the outer surface of the pressing member 14, and a winding roll 20 arranged in parallel with the feeding roll 18.
It is adapted to be wound up intermittently by a constant size feeding device (not shown). These are side plates 22 provided at both ends.
Supported by and equipped in one.

A retraction device for moving the cleaning machine main body 10 in and out of the blanket cylinder 12 and for reciprocating the blanket cylinder 12 to form a working space is installed. There is. The retraction device is a side plate 22 of the cleaning device body 10.
And a fixed plate 24 which is parallel to this and a four-bar rotary link mechanism. That is, the front end of the side plate 22 is connected to the tip end of the swing link 28 via the rotary support shaft 26, and the rear end of the side plate 22 is also connected to the front end of the telescopic link 32 via the rotary support shaft 30. are doing. And these links 28, 32
Is extended in a direction (downward in FIG. 1) crossing the advancing / retreating direction of the washing machine main body 10, and the extended ends thereof are similarly connected to the fixed plate 24 via rotary support shafts 34 and 36. In this case, the distance between the rotary support shafts 26 and 30 on the side plate 22 side is set to be larger than the distance between the rotary support shafts 34 and 36 on the fixed plate 24 side.

In this embodiment, the telescopic link 32 is composed of an air cylinder. The base end of the cylinder body 32A is connected to the fixed plate 24, and the telescopic rod 32B is connected to the side plate 22 of the washing machine body 10. Connected to. Therefore, in the expandable link 32, the rod 32B expands and contracts due to the supply and discharge of compressed air to and from the cylinder body 32A, and the link length is variable.

A positioning mechanism 38 is provided at the rear end of the washing machine body 10. This is the fixed plate 24
A slider 40 slidably mounted on the rear upper edge of the rear,
A reference plate 42 fixed to face the slider 40 is provided, and the slider 40 and the reference plate 42 are connected by an adjusting screw 44. The slider 40 is connected to the upper rotation support shaft 30 of the expansion link 32 by an auxiliary link 46. Therefore, the cleaner body 10 includes the side plate 22, the rotary support shaft 30, the auxiliary link 46, and the adjusting screw 44.
It is supported by the reference plate 42 via the, and the expansion link 32 is held in a fixed position in a non-operating state, and the cleaning machine body 10 can be finely moved back and forth by the adjusting screw 44.

By the way, the lower end of the expandable link 32 is pivotally attached to the fixed plate 24 via the rotary support shaft 36 as described above, and this pivot portion is indirectly connected to the fixed plate 24. . That is, the rotation lever 50 attached to the fixed plate 24 via the fixed rotation shaft 48.
Are mounted so as to have a plane of rotation along the plate 24. The fixed rotation shaft 48 is set to a side position of the extension / contraction direction line of the extension / contraction link 32, the rotation lever 50 is extended to the rear end face side of the cylinder body 32A, and the rotation support shaft 36 is attached to the extension end. Therefore, the expansion / contraction link 32 can be retracted rearward of the link axis by the rotation of the rotation lever 50. Such a rotating lever 50 is usually fixedly attached to the fixed plate 24 via a detachable pin 52 so as to be integrated with the fixed plate 24. Then, the washing machine body 10 is replaced with the blanket cylinder 1
The detachable pin 52 is detached when it is largely retracted from 2. Further, the rotation lever 50 includes the operation lever 5
4 is attached, and the rotation operation is performed by the operation lever 54.

The fixed plate 24 is attached to the frame 56 of the printing machine by bolts 58, and is installed so as to be parallel to the side plate 22 of the main body 10 of the cleaning machine.

The retractor of the blanket washer thus constructed is used as follows. When performing the washing operation, as shown in FIG. 1, the pressing member 14 of the washing machine body 10 is arranged to be pressed against the blanket cylinder 12, and the blanket is washed by rotating the cylinder 12.

When the cleaning work is completed and the cleaning cloth is wound up to a predetermined size, the cleaning machine main body 10 is replaced with the blanket cylinder 12.
It is necessary to move the retractable link 32 back from the retractable link 32, but this is performed by retracting the retractable link 32. That is, when the rod 32B is pulled in by supplying / discharging compressed air to / from the air cylinder body 32A, the rear side of the washer body 10 is pulled down, and at the same time, the swing link 28 on the tip side swings. The tip pressing member 14 is moved in a direction away from the blanket cylinder 12. Therefore, as shown in FIG.
It is possible to form a gap necessary for winding the cleaning cloth 16 between the blanket cylinder 12 and the blanket cylinder 12 by moving backward while tilting.

Next, when the retracting operation is performed for the replacement work of the blanket rubber, the retractable link 32 is contracted in advance from the state shown in FIG. 3 and the lower end pivot portion of the retractable link 32 is rotated. The pin 52 of the lever 50 is removed so that the rotating lever 50 can be rotated. Then, when the operation lever 55 attached to the turning lever 50 is turned counterclockwise in the figure, the turning lever 50 is turned, and the lower end of the telescopic link 32 connected thereto is pulled down. Along with this, the swing link 28 largely tilts. When the telescopic link 32 moves downward, the auxiliary link 46 connected to the side plate 22 also swings, and the washing machine body 10 retreats while tilting to a state in which the auxiliary link 46 and the telescopic link 32 are aligned. . As a result, a large space is formed between the blanket cylinder 12 and the blanket cylinder 12, as shown in FIG. As a result, the washing machine main body 10 does not hinder the work when the blanket is replaced. After the work is completed, the main body 10 of the washing machine can be easily
Can be returned to the original cleaning standby position.

As described above, according to this embodiment, the main body 10 of the washing machine can be selectively moved to any position of the washing operation position, the winding operation position, and the retreat position for the blanket replacement work by a simple link mechanism. Therefore, the engagement mechanism can be eliminated. Since the retracting operation can be performed by a simple turning operation, workability is greatly improved.

In the above embodiment, the telescopic link 3
Although 2 is composed of an air cylinder, any mechanism can be used as long as it can be expanded and contracted.

[0025]

As described above, according to the present invention,
Blanket side plates in the washing machine body having a take-up roll or the like of the pressing portion and the cleaning cloth to the blanket cylinder
A swing link connected to the front part near the cylinder and a telescopic link capable of telescopic operation connected to the rear part of the side plate farther from the blanket cylinder are provided. Fixed plate facing the side plate
The washing machine main body can be moved back and forth with respect to the blanket cylinder by a telescopic operation of the telescopic link , and a pivotally attached portion of the telescopic link to the fixed plate is rotatably attached to the fixed plate. Is indirectly connected to a fixed plate via a rotary lever, and by rotating the rotary lever with respect to the fixed plate, the pivoting portion of the telescopic link can be swung to retract the main body of the washing machine. Since it was made possible, while holding the nip pressure of the pressing part constant, let the cleaning cloth retreat for winding the cleaning cloth without causing slack in the cleaning cloth,
In addition, the retracting operation of the washing machine for the work such as replacement of the blanket rubber can be realized by a single structure, and the effect that the engagement mechanism can be omitted is obtained.

[Brief description of drawings]

FIG. 1 is a side view of a retractor for a blanket washing machine according to an embodiment.

FIG. 2 is an explanatory plan view of the device.

FIG. 3 is a side view showing a state where the cleaning cloth of the apparatus is moved to a winding operation position.

FIG. 4 is a side view showing a state in which the apparatus is moved to a retracted position.

[Explanation of symbols]

 10 Cleaning Machine Main Body 12 Blanket Cylinder 16 Cleaning Cloth 22 Side Plate 24 Fixed Plate 28 Swing Link 32 Telescopic Link 38 Positioning Mechanism 50 Rotating Lever 52 Detachable Pin 54 Operation Lever

Claims (1)

[Scope of utility model registration request] And 1. A swing link which is connected to a front portion of the blanket cylinder near the side plate in the washer body with a pressing portion and the cleaning cloth take-up roll or the like to the blanket cylinder, from the blanket cylinder of the side plate Distant
It has a telescopic link that can be telescopically connected to the rear part ,
The other ends of the swing link and the telescopic link are pivotally attached to a fixed plate facing the side plate, and the telescopic operation of the telescopic link allows the main body of the washing machine to move back and forth with respect to the blanket cylinder. The pivotal attachment portion to the fixed plate is indirectly connected to the fixed plate via a rotation lever rotatably attached to the fixed plate, and the expansion and contraction is performed by rotating the rotation lever with respect to the fixed plate. A retractor for a blanket washing machine, characterized in that the main body of the washing machine can be retracted by enabling pivoting of a pivotal portion of a link.