JPH08118605A - Ink feeder - Google Patents

Abstract

PURPOSE: To simply and quickly conduct reference position adjusting work for the ink foundation roller of a divided blade. CONSTITUTION: The threaded part of a drive shaft 14 supported against a body frame 3 is screwed in the base part of a divided blade 5. A driving gear 20 supported at a fixed position is key fitted onto the drive shaft 14. A push rod 23 is key-fitted inside a supporting cylinder 19 secured at a fixed position to relatively-rotate the push rod with the drive shaft 14 and engage them so as to advance and retreat integrally. At the push rod, a reference position adjusting screw 34 which rotates at a fixed position is screwed. The gear mechanism 42 of an ink applying amount adjusting means supported against a frame 39 is engaged with the driving gear 20. The push rod 23, the drive shaft 14 and the divided blade 5 are made to advance and retreat to/from an ink foundation roller by the rotation of the reference position adjusting screw 34 without releasing the engagement of the gear mechanism 42 with the driving gear 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general printing machine for printing newspapers, books, etc., and a special printing such as a coating machine for resin coating for polishing for polishing the sheet. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink supply device used in a machine, and more particularly to a zero position (reference position) adjusting device for a split blade.

[0002]

2. Description of the Related Art In a conventional ink supply device, a plurality of divided blades are supported along an axial direction of an ink source roller so as to be able to advance and retract with respect to the ink source roller. A drive shaft is rotatably supported by the main body frame corresponding to each of the divided blades, and a push rod is screwed into a screw portion on the tip end side of each drive shaft. Each split blade is biased rearward by a spring and engaged with the push rod. A drive gear is fixed on each drive shaft so as to rotate integrally, and a gear mechanism of an ink application amount adjusting means supported by a frame is engaged with each drive gear.

In the above structure, in order to adjust the reference position (0 position, origin) of each divided blade with respect to the outer peripheral surface of the ink source roller, first, the ink application amount adjusting means is removed from the frame and its gear mechanism is used. Release the mesh with the drive gear. Then, in this state, the operator uses the tool to rotate the drive shaft in either direction while visually observing the thickness of the ink applied to the outer peripheral surface of the ink source roller. As a result, the push rod screwed to the drive shaft and the split blade engaged with the push rod are moved forward against the elasticity of the spring or retracted by the elasticity of the spring, and the ink source of the split blade is moved. The reference position for the roller can be adjusted.

After adjusting the reference position, the ink application amount adjusting means is attached to the main body frame, and the gear mechanism thereof is engaged with the drive gear. Then, the drive gear and the drive shaft are rotated in either direction by driving the ink application amount adjusting means. As a result, similarly to the above, the push rod and the split blade screwed to the drive shaft are moved forward against the elasticity of the spring or moved backward by the elasticity of the spring, and the position of the split blade with respect to the ink source roller, that is, ,
The amount of ink applied to the ink source roller can be adjusted.

[0005]

However, since the drive gear and the drive shaft are fixed in the configuration of the above-mentioned conventional example, when the gear mechanism of the ink application amount adjusting means is engaged with the drive gear, the drive shaft is It is not possible to rotate the blade independently to move the split blade back and forth. For this reason, in order to adjust the reference position of the split blade with respect to the ink source roller, the ink application amount adjusting means is removed from the main body frame to release the engagement between the gear mechanism and the drive gear, and the drive shaft together with the drive gear in any direction. After adjusting the reference position by moving the split blade forward and backward to adjust the reference position, it is necessary to support the ink application amount adjustment means on the frame and engage the gear mechanism with the drive gear, which is a troublesome work and takes time to adjust. However, there was a problem that it was inefficient.

The present invention solves the above-mentioned conventional problems, and the ink of the divided blades can be formed without removing the ink application amount adjusting means from the frame and releasing the engagement between the gear mechanism and the drive gear. It is an object of the present invention to provide an ink supply device capable of adjusting a reference position with respect to an outer peripheral surface of a former roller, and therefore capable of easily and quickly performing a reference position adjusting operation of a split blade. Is.

[0007]

Means for Solving the Problems The technical means of the present invention for achieving the above object are arranged in parallel along the axial direction of the ink source roller and are supported so that they can only move forward and backward with respect to the ink source roller. A plurality of divided blades, a drive shaft for advancing and retracting the divided blades by rotating in any direction or moving back and forth in the axial direction, and can rotate integrally with the drive shaft, and in the axial direction of the drive shaft. Ink amount having a drive gear linked to allow the movement of the drive shaft, reference position adjusting means for allowing the drive shaft to rotate and moving the drive shaft forward and backward, and a gear mechanism meshed with the drive gear. And adjusting means.

As a reference position adjusting means in the above technical means, a fixed support member and a support member which is supported by the support member so as to be movable back and forth only in the axial direction, are movable integrally with the drive shaft, and are relatively rotatable. And a reference position adjusting screw that is rotatably supported by the fixing portion and that is screwed into the pressing member.

[0009]

According to the present invention having the above-mentioned structure, the drive shaft whose rotation is restricted by the drive gear meshing with the gear mechanism of the ink application amount adjusting means is moved forward or backward in the axial direction by the reference position adjusting means. The dividing blade can be moved forward or backward with respect to the ink source roller to adjust the reference position of the dividing blade with respect to the outer peripheral surface of the ink source roller. Further, the drive gear and the drive shaft are freely rotated in arbitrary directions with respect to the reference position adjusting means by driving the ink application amount adjusting means, and the dividing blade is moved forward or backward with respect to the outer peripheral portion of the ink source roller. It is possible to adjust the amount of ink applied to the ink source roller. In this way, the reference position of the split blade with respect to the outer peripheral surface of the ink source roller can be adjusted without removing the ink application amount adjusting means from the frame and releasing the meshing between the gear mechanism and the drive gear.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a main part of an ink supply device according to an embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of the ink supply device, and FIG. 3 is an ink source roller, an ink dam of the ink supply device, It is a schematic perspective view which shows the positional relationship of an ink receiving plate and a division blade.

1 to 3, 1 is an ink source roller, and 2 is an ink supply device of the present invention for supplying ink to the ink source roller 1. Explaining the ink supply device 2, a plurality of divided blades 5 are arranged in parallel on the base 4 of the main body frame 3 along the axial direction of the ink source roller 1. An ink reservoir 6 for accumulating ink to be supplied to the ink source roller 1 is provided on the dividing blade 5. The ink reservoir 6 is composed of a bottom plate 7 and ink dams 8 on both sides, and the bottom plate 7 is fixed to the base 4 by screws 11 via spacers 10 in escape holes 9 formed in the split blade 5. Therefore, each of the divided blades 5 is supported only between the base 4 and the bottom plate 7 so as to be able to advance and retreat in the direction of approaching or separating from the ink source roller 1.

The drive shaft 14 is rotatably supported in the hole 13 of the rearward projecting portion 12 of the divided blade 5 in the main body frame 3 so as to correspond to each divided blade 5 and is movable back and forth in the axial direction. The blade on the tip side of the split blade 5
It is screwed into a screw hole 15 formed in the axial direction on the base side of. A guide frame 16 is fixed to the protruding portion 12 of the main body frame 3, and a large-diameter hole 18 is formed in the back plate 17 of the guide frame 16 so as to correspond to each drive shaft 14, and each hole 18 is a support member. The base of the support cylinder 19 is fixed. The drive gear 20 is fitted to the outer periphery of the intermediate portion of the drive shaft 14 between the projecting portion 12 of the main body frame 3 and the tip end surface of the support cylinder 19, and the drive gear 2 is inserted into the key groove 21 formed in the drive shaft 14.
The tip of the key 22 attached to the boss portion of 0 is engaged. Therefore, the drive gear 20 can rotate integrally with the drive shaft 14 and can allow the drive shaft 14 to move in the axial direction.

A push rod 23 as a pressing member is inserted into the support cylinder 19, and a key 25 attached to the push rod 23 is engaged with a key groove 24 formed in the support cylinder 19 along the axial direction. Has been done. Therefore, the push rod 23 is supported by the support cylinder 19 so as to be movable only in the axial direction. A notch 26 is formed in the front side portion of the push rod 23, and a hole 27 is formed in the front side portion of the push rod 23 so as to reach the notch 26 from the front end in the axial direction. A small diameter portion 28 formed on the base side of the drive shaft 14 is inserted into the hole 27, and a step 29 on the front side of the small diameter portion 28 is in contact with the front surface of the push rod 23. In this abutting state, an engaging member 31 such as an E-ring is fitted in an annular groove 30 formed in a protruding portion of the small diameter portion 28 of the drive shaft 14 into the notch 26.
Is press-fitted, and the front side portion of the push rod 23 is clamped by the locking tool 31 and the step portion 29.
And the drive shaft 14 rotate relative to each other and can move back and forth integrally.

A receiving plate 32 is attached to the back surface of the guide frame 16, and a small diameter hole 33 is formed in the receiving plate 32 so as to correspond to each push rod 23. A reference position adjusting screw 34 is inserted into each hole 33, and a tip end portion of each reference position adjusting screw 34 is screwed into a screw hole 35 formed in the rear side portion of the push rod 23 along the axial direction, A collar-shaped portion 36 integrally provided in the intermediate portion of each reference position adjusting screw 34.
Are sandwiched between the support cylinder 19 and the receiving plate 32, and the reference position adjusting screws 34 are supported so as to be rotatable only. Therefore, when each of the reference position adjusting screws 34 is rotated in either direction, the push rod 23 screwed into the reference position adjusting screw 34 is advanced or retracted in the axial direction.

A nut 38 is screwed into the rearward projecting portion of each reference position adjusting screw 34 via a disc spring 37, and the disc spring 3
The backlash between the reference position adjusting screw 34 and the push rod 23 screw 35 is restricted by the impact resilience of No. 7.

A gear mechanism 42 for adjusting the ink application amount is pivotally supported between the supporting plates 40 and 41 of the frame 39, and an input shaft of the gear mechanism 42 has a knob (vernier scale) 43 for adjusting the ink application amount. And the final stage gear 44 of the gear mechanism 42 is engaged with the drive gear 20. The gear mechanism 42 is set so that the final stage gear 44 is rotated at an angle smaller than the rotation angle of the ink application amount adjustment knob 43.

The entire ink supply device 2 is divided into blades 5.
Is configured to be rotated to an ink supply position approaching the outer peripheral portion of the ink source roller 1 and a position where the dividing blade 5 is separated from the outer peripheral portion of the ink source roller 1.

The operation of the above arrangement will be described below. First, the reference position adjusting operation will be described. While the operator visually observes the thickness of the ink applied to the outer peripheral surface of the ink source roller 1, the operator uses the tool to set the reference position adjusting screw 34 in either direction. The push rod 23, which is key-fitted to the support cylinder 19 and whose rotation is restricted, is moved forward or backward with respect to the support cylinder 19. At this time, as described above, the drive shaft 14 is rotationally restricted by the key fitting of the drive gear 20 that meshes with the gear mechanism 42 for adjusting the ink application amount, and is free to rotate with respect to the push rod 23.
When the push rod 23 moves forward, the drive shaft 1
The step portion 29 of No. 4 can be pressed to advance the drive shaft 14 and the split blade 5 in the direction of approaching the ink source roller 1. On the other hand, when the push rod 23 is retracted, the locking tool 31 is pressed by the front surface of the notch 26, and the locking tool 31 is pressed.
The drive shaft 14 and the split blade 5 that are locked by the can be retracted in the direction away from the ink source roller 1. Since the backlash between the reference position adjusting screw 34 and the screw hole 35 of the push rod 23 is regulated by the repulsive elasticity of the disc spring 37 as described above, the reference position of the split blade 5 with respect to the ink source roller 1 is set. It can be adjusted with high precision.

Next, the ink application amount adjusting operation will be described. An operator operates the ink application amount adjusting knob 43 in either direction. By this operation, the gear mechanism 42
The drive gear 20 and the drive shaft 14 key-fitted to the drive gear 20 are rotated in either direction via. At this time, as described above, the drive shaft 14 is pushed by the push rod 23.
Since it is free to rotate with respect to the drive shaft 14, the divided blade 5 having the screw hole 15 screwed into the threaded portion thereof is advanced in the direction of approaching the ink source roller 1 with the rotation of the drive shaft 14 in either direction. Alternatively, it can be retracted in the direction away from the ink source roller 1.

In the above embodiment, the key groove 21 is formed in the drive shaft 14 and the key 22 to be inserted into the key groove 21 is attached to the boss portion of the drive gear 20. The ridge and the groove formed along the axial direction may be engaged with each other. The same applies to the relationship between the support cylinder 19 and the push rod 23. Further, although the drive shaft 14 is directly screwed to the split blade 5 in the above-described embodiment, the drive shaft 14 is screwed to the push rod, the push rod is engaged with the split blade 5, and the drive shaft 14 is By rotating the blade to the
May be moved forward and the drive shaft 14 may be rotated to the other side, whereby the split blade 5 may be retracted to the drive shaft 14 side by a spring. In addition, the present invention can be modified in various ways without departing from the basic technical idea thereof.

[0021]

As described above, according to the present invention,
By moving the drive shaft whose rotation is restricted by the drive gear meshing with the gear mechanism of the ink application amount adjusting means forward or backward in the axial direction by the reference position adjusting means, the split blade is moved forward with respect to the ink source roller,
Alternatively, the reference position of the divided blade with respect to the outer peripheral surface of the ink source roller can be adjusted by retreating. Also,
By driving the ink application amount adjusting means, the drive gear and the drive shaft are freely rotated in arbitrary directions with respect to the reference position adjusting means, and the dividing blade is moved forward or backward with respect to the outer peripheral portion of the ink source roller. The amount of ink applied to the original roller can be adjusted. In this way, the reference position of the split blade with respect to the outer peripheral surface of the ink source roller can be adjusted without removing the ink application amount adjusting means from the frame and releasing the meshing between the gear mechanism and the drive gear. Therefore, the reference position adjustment work of the split blades can be performed easily and quickly.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of an ink supply device according to an embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view of the ink supply device.

FIG. 3 is a schematic perspective view showing a positional relationship among an ink source roller, an ink reservoir, an ink receiving plate, and a split blade of the same ink supply device.

[Explanation of symbols]

 1 Ink Source Roller 2 Ink Supply Device 3 Frame 5 Dividing Blade 6 Ink Reservoir 14 Drive Shaft 19 Support Tube 20 Drive Gear 23 Push Rod 31 Locking Tool 34 Reference Position Adjusting Screw 42 Gear Mechanism 43 Kink Adjusting Knob

Claims (2)

[Claims] 1. A plurality of divided blades arranged in parallel along the axial direction of the ink source roller and supported so as to be able to advance and retreat with respect to the ink source roller, and to rotate in an arbitrary direction or to advance and retract in the axial direction. By the drive shaft for advancing and retracting the divided blade, it is possible to rotate integrally with this drive shaft,
And, allowing the rotation of the drive shaft and the drive gear linked so as to allow the movement of the drive shaft in the axial direction,
An ink supply device comprising: a reference position adjusting means for moving the drive shaft forward and backward; and an ink application amount adjusting means having a gear mechanism meshed with the drive gear. 2. The reference position adjusting means includes a fixed support member,
The pressing member is supported by the support member so as to be movable back and forth only in the axial direction, is integrally movable with the drive shaft, and is linked to allow relative rotation, and is supported by the fixed portion so as to be rotatable only. The ink supply device according to claim 1, further comprising a reference position adjusting screw screwed to the pressing member.