Printing machine circulating ink supply device for packaging box

Abstract

The utility model discloses a printing machine circulation ink supply device for packing boxes, which comprises a feeding box, the feeding box comprises a pre-filtering cavity and a post-filtering cavity which are separated by a filter screen, a feeding pipe is arranged at the feeding tail end of the feeding box, an infusion pump, a heating pipe and a buffer blade are arranged on the feeding pipe, the feeding pipe penetrates through an ink supply device backwards and then enters an ink fountain, and the buffer blade is arranged in the pre-filtering cavity and the post-filtering cavity. An inverted-L-shaped backflow pipe is arranged on the outward side of the bottom of the ink fountain in a traction mode, the backflow pipe is downwards connected with a returned material stirring box, and finally circulating ink enters a pre-filtering cavity of the feeding box. Ink is filtered before feeding, meanwhile, ink conveying pressure is increased during liquid pumping, the ink conveniently and rapidly moves upwards, the ink flows back to the pre-filtering cavity in the feeding box again through an external backflow pipe, the ink can be conveniently and rotatably utilized, ink waste is reduced, cost is reduced, and environment friendliness is better achieved; redundant impurities existing in the recycling process of the recovered ink are reduced, and the quality of the ink is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machine equipment, in particular to a circulating ink supply device of a printing machine for packaging boxes. Background Art

[0002] At present, the print head of each machine used in printing equipment is composed of multiple inkjet heads. In terms of ink supply, the current technology is: the ink required by the inkjet head is pumped from the ink bottle to the ink storage tank by the ink pump, and then sucked into the inkjet head by the siphon. In this way, the ink supply method only flows from one side of the total ink material to the ink bottle, which does not have the effect of recycling ink, and the excess ink cannot be reused, causing environmental pollution and waste of resources.

[0003] In order to reduce the above-mentioned problems, some existing technologies currently set the total ink material at the top, so when feeding, the ink only needs to flow from a high position to a low position depending on the potential energy. When recovery is required, a common design scheme is to connect an external liquid pump to reintroduce it to the total ink material. However, due to the limited liquid pumped out by the liquid pump, there will still be residual ink remaining at the bottom of the original position that cannot be recovered, which will still cause waste.

[0004] Therefore, in order to save printing ink and realize the effect of circulating ink supply, the utility model proposes a circulating ink supply device for a printing press used for a packaging box. Utility Model Content

[0005] The utility model aims to provide a circulating ink supply device for a printing press used for packaging boxes, so as to solve the problems of poor resilience and elongation in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circulating ink supply device for a printing press for packaging boxes, comprising a feed box, the feed box comprising a pre-filter chamber and a post-filter chamber separated by a filter screen, a feed pipe being provided at the feed end of the feed box, a liquid suction pump being installed on the feed pipe, a heating pipe being installed on the outer side of the feed pipe behind the liquid suction pump, a buffer blade being installed on the inner side of the feed pipe behind the heating pipe, the feed pipe entering the ink fountain after passing through the ink supply device backwards, a material suction sponge being provided on the side of the ink fountain facing the feed pipe, a plurality of nozzles distributed equidistantly downwards being provided at the bottom, a return pipe arranged in an inverted L shape being pulled outwards from the bottom of the ink fountain, the return pipe being connected downwards to a return material stirring box, the return material stirring box sending the stirred and sieved ink into a discharge pipe below, the end of the discharge pipe being connected to the pre-filter chamber of the feed box;

[0007] A plurality of electric control valves for controlling the inflow of ink are arranged at different positions on the feed pipe, and electric control valves are also arranged on the return pipe and the discharge pipe.

[0008] Preferably, a discharge pipe is provided at the discharge bottom of the pre-filter chamber, and an electric-controlled valve is also provided on the discharge pipe to achieve better control when convenient.

[0009] Preferably, the feed pipe is externally connected to a pressure pump, and the pressure pump is arranged at the front end of the liquid extraction pump to facilitate the operation of the pressure of the ink in the pipeline and to better lift the ink.

[0010] Preferably, an ink roller is provided inside the ink supply device, and a feed pipe extending outward from the bottom of the ink roller is connected to the ink fountain in an L-shape.

[0011] Preferably, the return material stirring box includes an upper filter baffle and a lower filter baffle, and a stirring shaft is installed above the upper filter baffle. The stirring shaft is connected to an external drive motor, and the recovered ink is better filtered through the screening effect of the upper filter baffle and the lower filter baffle.

[0012] Preferably, an X-shaped breaking rod is installed at the tail of the stirring shaft to increase the breaking effect.

[0013] Preferably, the sieve hole diameter of the upper filter partition is larger than the sieve hole diameter of the lower filter partition, so as to facilitate better filtration.

[0014] Preferably, the upper filter baffle, the lower filter baffle and the filter screen are all made of stainless steel to reduce the impact on the ink quality during the transmission process.

[0015] Preferably, the absorbent sponge is fixedly mounted on the feed end of the ink fountain, and the ink fed is buffered by the absorbent sponge.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the circulating ink supply device of the printing press for packaging boxes not only filters the ink before feeding, but also increases the pressure of ink transmission when drawing liquid, which is convenient for the ink to move upward and quickly. A heating sleeve is installed on the outside of the feed pipe, so as to facilitate the ink to be heated to a suitable temperature between 20-40°C and then enter the inkjet state. In addition, a buffer blade is installed at the rear end of the feed pipe, and the buffer blade is used to slow down the flow rate of the ink in the flow channel. After buffering, the ink enters the ink supply device and then enters the ink fountain. On the other hand, it flows back to the pre-filter chamber in the feed box through an external reflux pipe, so as to facilitate the recycling of ink, reduce ink waste, reduce costs, and be more green and environmentally friendly. At the same time, it ensures that the reused ink can also be filtered again, reduce the excess impurities in the reuse of recycled ink, and ensure the quality of the ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is an enlarged schematic diagram of the connection between the ink fountain, the return pipe and the return material mixing box in the utility model.

[0019] In the figure: a feed box (1), a pre-filter chamber (11), a filter screen (12), a post-filter chamber (13), a feed pipe (14), a feed pipe (2), a liquid extraction pump (3), a pressure pump (4), a heating sleeve (5), a buffer blade (6), an ink supply device (7), an ink roller (71), a return pipe (8), an ink fountain (9), a nozzle (91), a suction sponge (92), a return material mixing box (10), an upper filter baffle (101), a drive motor (102), an agitating shaft (103), a breaking rod (104), a lower filter baffle (105), and a discharge pipe (106). DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1: Please refer to Figure 1-2 , a circulating ink supply device for a printing press for packaging boxes, comprising a feed box 1, in order to achieve ink filtration of the feed, the feed box 1 comprises a pre-filter chamber 11 and a post-filter chamber 13 separated by a filter screen 12, wherein, see Figure 1 A discharge pipe 14 is provided at the discharge bottom of the pre-filter chamber 11, and an electric control valve is provided on the discharge pipe 14 to facilitate the control of discharge;

[0022] A feed pipe 2 is provided at the feed end of the feed box 1, and a liquid extraction pump 3 is provided on the feed pipe 2. In addition, a pressure pump 4 is externally connected to the feed box 1. The pressure pump 4 is arranged at the front end of the liquid extraction pump 3 to pressurize the ink in the pipeline. A heating tube 5 is installed on the outer side of the feed pipe 2 behind the liquid extraction pump 3. By arranging the heating tube 5, the temperature in the feed pipe 2 can reach the optimal feeding temperature of 20-40°C. A buffer blade 6 is installed on the inner side of the feed pipe 2 behind the heating tube 5. By arranging the buffer blade 6, the situation where the ink flow rate transmitted by the pressure pump 3 is too fast can be reduced, and the flow rate of the ink can be slowed down, which is convenient for The ink is fed into the ink supply device 7 at a slow speed, and the ink roller 71 in the ink supply device 7 is rubbed and discharged. The feed pipe 2 passes through the ink supply device 7 backward and enters the ink fountain 9. In order to achieve better feeding, the feed pipe 2 at the bottom of the ink roller 71 is connected to the ink fountain 9 in an L shape. A suction sponge 92 is provided on the side of the ink fountain 9 facing the feed pipe 2, wherein the suction sponge 92 is fixedly installed at the feed end of the ink fountain 9 to effectively slow down the speed of ink inflow. A plurality of equally distributed nozzles 91 are provided at the bottom of the ink fountain 9 to facilitate uniform ink discharge. An inverted L is provided on the outward side of the bottom of the ink fountain 9. The reflux pipe 8 is set in the shape of a type. By setting the reflux pipe 8, on the one hand, the effect of ink reflux can be enhanced, resource waste can be reduced and costs can be reduced. On the other hand, the inverted L-shaped reflux pipe can effectively avoid the impact on the printed product during the printing process. At the same time, the reflux pipe 8 set at the bottom has the effect of allowing the ink to directly reflux when not in use. The ink returns to the feed box according to its own gravitational potential energy without the need for an additional liquid extraction pump. The reflux effect is also better and cleaner. Compared with the operation of extracting the reflux with a liquid extraction pump, the amount of wasted ink can be greatly reduced.

[0023] See attached for details Figure 1 and 2The reflux pipe 8 is downwardly connected to a return material stirring box 10, and specifically, the return material stirring box 10 comprises an upper filter baffle 101 and a lower filter baffle 105, and a stirring shaft 103 is installed above the upper filter baffle 101, and the stirring shaft 103 is connected to an external driving motor 102, wherein in order to enhance the stirring and breaking effect, an X-shaped breaking rod 104 is installed at the tail of the stirring shaft 103; in order to achieve double-layer filtration, the sieve hole diameter of the upper filter baffle 101 is larger than the sieve hole diameter of the lower filter baffle 105, and in order to reduce the impact on the ink quality, the upper filter baffle 101, the lower filter baffle 105 and the filter screen 12 are all made of stainless steel. The return material mixing box 10 sends the stirred and sieved ink into the discharge pipe 106 below. The end of the discharge pipe 106 is connected to the pre-filter chamber 11 of the feed box 1, which is convenient for the subsequent ink circulation after filtration and reuse, thereby reducing impurities in the ink. At the same time, in order to achieve the regulation of the ink amount at each position, a number of electric control valves for controlling the inflow of ink are provided at different positions on the feed pipe 2, and the return pipe 8 and the discharge pipe 106 are also provided with electric control valves.

[0024] Working principle: When the utility model is in use, first, the ink raw material is fed from the feed box, passed through the pre-filter cavity through the filter screen into the post-filter cavity, and then fed into the ink supply device and the ink fountain through the feed pipe. During the feeding process, a liquid extraction pump for lifting the ink, a pressure pump for increasing the ink speed, a heating sleeve for increasing the ink temperature, and a buffer blade for reducing the excessive flow rate are provided. It should be noted that the pressure pump, heating sleeve, and liquid extraction pump mentioned in this section are all prior arts. This scheme mainly protects the overall combination and ensures that the combined scheme has a better use effect than the prior art. After the ink roller in the ink supply device rotates, the ink passes through the ink fountain. It flows to the nozzle, and the nozzle starts to discharge ink and ensure normal printing. After printing is completed, the excess ink automatically flows to the low-lying area according to the action of gravity after the electric control valve on the return pipe is opened, so that it can completely and completely enter the return material mixing box. The ink is re-stirred through the stirring structure in the return material mixing box, and the impurities are screened by the double filter partition. After the screening is completed, it is sent back to the feed box and waits for the next recycling and reuse according to the above procedure. Compared with the pump return effect in the prior art, this solution adopts a natural way to return the material, and the return effect is better. The design method does not affect the normal printing effect and is more reasonable.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A circulating ink supply device for a printing press for packaging boxes, comprising a feed box (1), characterized in that: The feed box (1) comprises a pre-filter chamber (11) and a post-filter chamber (13) which are separated by a filter screen (12); a feed pipe (2) is provided at the feed end of the feed box (1); a liquid pump (3) is installed on the feed pipe (2); a heating pipe (5) is installed on the outer side of the feed pipe (2) behind the liquid pump (3); a buffer blade (6) is installed on the inner side of the feed pipe (2) behind the heating pipe (5); the feed pipe (2) passes through an ink supply device (7) backwards and enters an ink fountain (9); a suction sponge (92) is provided on the side of the ink fountain (9) facing the feed pipe (2); a plurality of nozzles (91) are arranged at equal distances downward at the bottom; an inverted L is provided on the outer side of the bottom of the ink fountain (9) for pulling A return pipe (8) is arranged in a type, the return pipe (8) is connected to a return material stirring box (10) downwardly, the return material stirring box (10) sends the stirred and sieved ink to a discharge pipe (106) below, and the end of the discharge pipe (106) is connected to the pre-filter chamber (11) of the feed box (1); A plurality of electrically controlled valves for controlling the inflow of ink are provided at different positions on the feed pipe (2), and electrically controlled valves are also provided on the return pipe (8) and the discharge pipe (106).

2. The circulating ink supply device for a printing press for packaging boxes according to claim 1, characterized in that: A discharge pipe (14) is provided at the discharge bottom of the pre-filter chamber (11), and an electric control valve is also provided on the discharge pipe (14).

3. The circulating ink supply device for a printing press for packaging boxes according to claim 1, characterized in that: The feed pipe (2) is externally connected to a pressure pump (4), and the pressure pump (4) is arranged at the front end of the liquid extraction pump (3).

4. The circulating ink supply device for a printing press for packaging boxes according to claim 1, characterized in that: An ink roller (71) is provided inside the ink supply device (7), and a feed pipe (2) facing outward from the bottom of the ink roller (71) is connected to the ink fountain (9) in an L-shape.

5. A circulating ink supply device for a printing press for packaging boxes according to any one of claims 1 to 4, characterized in that: The return material stirring box (10) comprises an upper filter baffle (101) and a lower filter baffle (105), and a stirring shaft (103) is installed above the upper filter baffle (101), and the stirring shaft (103) is connected to an external drive motor (102).

6. The circulating ink supply device for a printing press for packaging boxes according to claim 5, characterized in that: An X-shaped beating rod (104) is installed at the tail of the stirring shaft (103).

7. The circulating ink supply device for a printing press for packaging boxes according to claim 6, characterized in that: The sieve hole diameter of the upper filter separator (101) is larger than the sieve hole diameter of the lower filter separator (105).

8. The circulating ink supply device for a printing press for packaging boxes according to claim 7, characterized in that: The upper filter baffle (101), the lower filter baffle (105) and the filter screen (12) are all made of stainless steel.

9. The circulating ink supply device for a printing press for packaging boxes according to claim 7, characterized in that: The absorbent sponge (92) is fixedly mounted on the feed end of the ink fountain (9).

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