CN111347757A - An automatic inking system for offset printing UV ink - Google Patents

Abstract

The invention provides an automatic offset printing UV ink feeding system which mainly comprises an ink container, an ink hopper groove and an ink homogenizing rod, wherein a cross beam is arranged above the ink hopper groove, a transverse moving mechanism is arranged in the cross beam, a supporting table is fixed above the transverse moving mechanism, the ink container is fixed on the supporting table, a rotating mechanism is further arranged on the supporting table and drives the ink homogenizing rod to rotate, an ink outlet is formed in the lower end of the ink container, and the ink outlet is close to the ink homogenizing rod, so that ink flows into the ink hopper groove along the ink homogenizing rod. Aiming at the viscous characteristic of the offset UV ink, the automatic ink distribution device utilizes automatic pressurization ink discharge and combines an ink distribution rod to automatically stir back and forth and rotate to distribute the ink, so that the ink in the ink hopper groove can be more uniform, the quality of a printed product is stable, the automation efficiency is high, and the labor cost can be saved.

Description

An automatic inking system for offset printing UV ink

technical field

The invention relates to the technical field of offset printing inking equipment, in particular to an automatic inking system for offset printing UV ink.

Background technique

Offset UV ink has been widely used in offset printing because of its fast drying speed and good printing effect. Offset UV ink does not contain solvent, so it is relatively viscous and like paste. In the normal production process, the operator needs to stir the ink in the ink fountain tank at regular intervals for the uniformity of the ink, and also prevent the influence of ultraviolet light in the long-term light on the ink surface.

At present, offset printing equipment is high-speed equipment, and the production speed is relatively fast. If the amount of ink required is relatively large when full-page printing is encountered, it is necessary to continuously add ink to the ink fountain tank. When the ink fountain tank is just filled with ink, The ink volume in the ink fountain tank is relatively large, and the gravity is also large, which often causes the ink volume to be larger than usual, and the printing color is darker and unstable. At the same time, in order to prevent the top ink from drying out, the operator needs to stir frequently, not only the labor intensity is relatively high, but the printing quality is also unstable.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an automatic inking system for offset UV ink in view of the existing technical situation, which can realize automatic pressurization and inking, and combine the rotation of the ink distribution rod and the back and forth stirring for ink distribution, without manual operation, and with high efficiency, Save labor costs.

To achieve the above object, the present invention adopts the following technical solutions:

The invention is an automatic inking system for offset printing UV ink, which mainly includes an ink container, an ink fountain groove and an ink distribution rod. A beam is arranged above the ink fountain groove. A support table is fixed, the ink container is fixed on the support table, and the support table is also provided with a rotating mechanism, the rotating mechanism drives the ink distribution rod to rotate, and the lateral movement mechanism drives the ink container and the ink distribution rod to move back and forth left and right, and the ink fountain groove is adjusted. The ink in the ink container is stirred, and the ink outlet is at the lower end of the ink container, and the ink outlet is close to the ink distribution rod, so that the ink flows into the ink fountain groove along the ink distribution rod to achieve uniform ink discharge.

Further, the lateral movement mechanism is linked with the rotation mechanism, that is, a rolling worm gear or a double worm drive can be used to realize the associated action of the lateral movement mechanism and the rotation mechanism.

Further, limit mechanisms are provided on both sides of the ink fountain tank to meet the change of the ink width range required by the ink fountain tank.

Further, there is a container cover above the ink container, and the container cover is provided with an air nozzle, and the air nozzle is fed with compressed air, which can generate pressure inside the ink container for inking.

The beneficial effects of the present invention are:

1. The ink container has the function of inking under pressure by the air nozzle, which can achieve the required amount of ink by adjusting the air pressure, the ink amount is stable, and the operability is strong;

2. The ink container and the ink distribution rod move synchronously, and the ink will enter the ink fountain groove along the ink distribution rod, and the ink will be softer and more uniform;

3. Combined with the limit mechanism of the ink fountain tank, the ink discharge range can be adjusted, the ink discharge is more uniform, and the operability is strong;

4. The ink mixing rod can rotate in the process of back and forth translation, which is different from the large central eddy current caused by the traditional rotary stirring. For a softer, more fluid blend.

Description of drawings:

Accompanying drawing 1 is the overall structure schematic diagram of the present invention;

Accompanying drawing 2 is the schematic diagram of the unrelated action of the lateral movement mechanism and the rotation mechanism in the present invention;

Accompanying drawing 3 is the correlation diagram that the lateral movement mechanism and the rotating mechanism adopt the rolling worm gear in the present invention;

Accompanying drawing 4 is the correlation diagram that the lateral movement mechanism and the rotating mechanism adopt double worm drive in the present invention;

5 is a schematic structural diagram of the ink container in the present invention.

Detailed ways:

Please refer to FIG. 1, which is a schematic structural diagram of a preferred embodiment of the present invention. The present invention is an automatic inking system for offset UV ink, which mainly includes an ink container 1, an ink fountain groove 2 and an ink distribution rod 3. The ink fountain groove 2. There is a beam 21 above, and a lateral movement mechanism is installed in the beam 21, a support table 4 is fixed above the lateral movement mechanism, the ink container 1 is fixed on the support table 4, and the lateral movement mechanism drives the ink container and the ink distribution rod to and fro The support table 4 is also provided with a rotating mechanism. The rotating mechanism drives the ink-distributing rod 3 to rotate, which can make the ink-distributing rod 3 move back and forth in the ink fountain tank 2 and stir, and rotate while translating, forming a small mobile eddy current. Make the ink in the ink fountain tank 2 softer and more even.

Specifically, there are three implementations of the lateral movement mechanism and the rotation mechanism, one is that the lateral movement mechanism and the rotation mechanism act separately and are not associated with each other; the other two are the associated action of the lateral movement mechanism and the rotation mechanism.

As shown in FIG. 2 , the lateral movement mechanism and the rotation mechanism act respectively. Specifically, the lateral movement mechanism includes a screw rod 71 mounted on the beam 21 , a slider 72 linked with the screw rod 71 , and the screw rod 71 is driven by the first motor 7 . Drive, the two ends of the screw rod 71 are connected with the beam 21 through bearings, and the support table 4 is fixed on the slider 72, or the slider 72 can directly replace the support table 4. In order to ensure the smooth operation of the slider 72, two sides of the beam 21 can be set The guide rail 20, the two sides of the slider 72 are in conjunction with the guide rail 20, and the first motor 7 drives the screw rod 71 to make the slider 72 translate left and right, thereby driving the ink container 1 and the ink distribution rod 3 to synchronously translate left and right; the rotating mechanism includes a second motor 70. The drive shaft of the second motor 70 is connected with the slider 72 or the support table 4 by bearings, and the ink distribution rod 3 is directly connected below the drive shaft, or the second motor 70 is connected to the ink distribution rod 3 after passing through the reducer, and the support table 4 or The slider 72 should have a suitable hole position for the ink container 1 and the second motor 70 to fit together, so that when the lateral movement mechanism drives the ink container 1 and the ink leveling rod 2 to do back and forth translation movement, the ink leveling rod 3 rotates on its own. .

The associated actions of the lateral movement mechanism and the rotation mechanism are as follows:

(1) The way of rolling the worm gear, as shown in Figure 3, the lateral movement mechanism includes a screw rod 71 mounted on the beam 21, a slider 72 linked with the screw rod 71, the screw rod 71 is driven by the first motor 7, and the screw rod 71 is driven by the first motor 7. Both ends of 71 are connected with the beam 21 through bearings, and the support table 4 is fixed on the slider 72, or the slider 72 can directly replace the support table 4. The two sides of the block 72 are fitted and linked with the guide rail 20, and the lead screw 71 is driven by the motor 7 to make the slider 72 translate left and right; Bearing connection is adopted, the ink distributing rod 3 is connected below the worm wheel 91, the support table 4 or the slider 72 should have suitable holes for the ink container 1 and the worm wheel 91 to fit and assemble, and one side of the beam 21 is connected to the worm 92 through the bearing, when the slider 72 And/or when the support rod 4 drives the worm wheel 91 to do a back and forth translation movement, the worm wheel 91 will be linked with the worm 92, that is, the worm wheel 91 will rotate and drive the ink distribution rod 3 to rotate;

(2) The method of double worm drive, as shown in Figure 4, the beam 21 is placed in an L shape, the lower part of the beam 21 should be hollowed out, and the lateral movement mechanism includes a first worm 81 installed on one side of the beam 21, and the first worm 81 is up and down. The square has a guide rail 20 mounted on the beam 21, the upper and lower ends of the slider 72 fit and link with the guide rail 20, a first motor 7 is arranged above the slider 72, a second worm 82 is arranged in the middle of the slider 72, and the second worm 82 is connected with the guide rail 20. The upper and lower ends of the slider 72 are connected by bearings, the upper shaft end of the second worm 82 is connected with the first motor 7 or the deceleration mechanism of the first motor 7, and the lower shaft end of the second worm 82 is connected with the ink distribution rod 3; the first worm 81 The second worm 82 is perpendicular to each other, the thread is the same, and the lead angle of the worm thread is 45°. When the first motor 7 drives the second worm 82 to rotate, the second worm 82 together with the slider 72 will be in the first worm 81. Rolling back and forth in the range, thereby driving the ink distribution rod 3 to rotate while translating; and the cross-sectional shape of the slider 72 is similar to that of the beam 21. Make the ink container 1 and the ink distribution rod 3 move synchronously.

A bracket 22 is arranged above the ink fountain tank 2, and the cross beam 21 is placed on the support 22. When cleaning the ink fountain tank 2, the cross beam 21 and its linkage structure can be directly lifted to clean the ink fountain tank 2.

The cover of the ink fountain 2 (not shown in the figure) can be set on both sides of the beam 21 to avoid sundries or light from affecting the ink quality. It is necessary to leave a space for the linkage mechanism of the ink distribution rod 2 to pass through.

The lower end of the ink container 1 is the ink outlet 11, and the ink outlet 11 is close to the ink distribution rod 3, so that the ink flows into the ink fountain 2 along the ink distribution rod 3. Under the rotation of the ink distribution rod 3, the ink will translate on the ink distribution rod 3. During the process, the ink is continuously rotated to make the ink more soft and uniform.

There are limit mechanisms 5 on both sides of the ink fountain tank 2. The limit mechanism 5 can use a limit switch or a limit sensor. When the limit mechanism 5 is actuated, the drive motor of the lateral movement mechanism will be reversed, so that the ink distribution rod 3 will be reversed. As for whether it will rotate in the opposite direction, it is limited by the related structure of the horizontal mechanism and the rotating mechanism. If the two are not related, when the limit mechanism 5 moves, the ink-distributing rod 3 can be set to reverse whether it is reversed or not. Rotation, if the two are related, the reverse rotation will be formed in the above two cases.

As shown in FIG. 5 , there is a container cover 10 above the ink container 1, and the container cover 10 is provided with an air nozzle 6. The ink container 1 can be designed to be tapered. After the container cover 10 is closed, the interior of the ink container 1 is in a sealed state. Relying on the air nozzle 6 to connect the compressed air pump 61 to pressurize the sealed ink container 1; and the ink outlet 11 can be provided with a pressure valve 12. The pressure valve 12 is specifically a spring linkage structure, that is, under a certain pressure, the ejector rod pushes downward. When the valve ball is separated from the ink outlet 11, the ink will be automatically injected. When the pressure is removed, the ejector rod relies on the spring to reset the valve ball to seal the ink outlet 11 again.

After the container cover 10 of the ink container 1 is opened, ink can be added manually.

Further, the bagged ink can be placed in the ink container 1, that is, the ink outlet 11 can be provided with a water guide column 13, and the water guide column 13 is the same as the water guide column of the barreled water dispenser, which is mainly conducive to the positioning of the bagged ink and opening the bag. The water outlet of the ink, the water guiding column 13 is connected with the pressure valve 12, and the air pressure directly acts on the bagged ink, so that the ink passes through the water guiding column 13 to open the pressure valve 12 to realize the inking. The bagged ink is used for easy replacement. The bagged ink is similar to barreled water and directly connected to the water guide column 13. After each ink in the ink bag is used up, it is only necessary to open the container cover 10, take out the empty bag, and replace it with a new bag. ink to complete the ink filling. The use of flexible bag-packed ink makes the entire ink container 1 relatively independent, which is simple and convenient relative to the processing of ink, which can keep the equipment in a clean state to speed up the operation of changing the color of the ink, and can interrupt the operation of the equipment at any time. , and can save the undistributed ink in the ink bag, which is fast and very convenient, and the ink container 1 does not need to be cleaned after use.

Of course, the above diagrams are only preferred embodiments of the present invention, and are not intended to limit the scope of use of the present invention. Therefore, any equivalent changes in the principles of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. An automatic inking system for offset printing UV ink, mainly comprising an ink container (1), an ink fountain groove (2) and an ink distribution rod (3), characterized in that: a beam (21) is arranged above the ink fountain groove (2) , a transverse movement mechanism is installed in the beam (21), a support table (4) is fixed above the transverse movement mechanism, the ink container (1) is fixed on the support table (4), and the support table (4) ) is also provided with a rotating mechanism, the rotating mechanism drives the ink distribution rod (3) to rotate, the lower end of the ink container (1) is the ink outlet (11), and the ink outlet (11) is close to the ink distribution rod (3), so that the ink Flow along the ink distribution rod (3) into the ink fountain groove (2). 2 . The automatic inking system for offset UV ink according to claim 1 , wherein the lateral movement mechanism is linked with a rotating mechanism. 3 . 3. An automatic inking system for offset printing UV ink according to claim 1 or 2, characterized in that: limit mechanisms (5) are provided on both sides of the ink fountain groove (2). 4. An automatic inking system for offset printing UV ink according to claim 1 or 2, characterized in that: the ink container (1) is provided with a container cover (10) above, and the container cover (10) is provided with a gas Mouth (6).

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