Ink stirring device for printing machine

Abstract

The utility model discloses an ink stirring device for a printing machine, which belongs to the field of printing machines and comprises a stirring barrel, a rotating shaft is rotatably mounted in the middle of the stirring barrel and comprises an upper half shaft and a lower half shaft, a partition plate is fixedly mounted at the upper end of the stirring barrel, and the upper half shaft is positioned at the upper end of the partition plate. A fixed disc is fixedly installed in the middle of the interior of the stirring barrel, a conical guide groove is formed in the inner side of the fixed disc, a grinding disc fixed to the outer side of the rotating shaft is installed in the middle of the interior of the fixed disc, conical slopes are arranged at the upper end and the lower end of the grinding disc, and the bottom of the grinding disc is inserted into the conical guide groove in the lower end of the interior of the fixed disc; and a limiting rod is installed in the middle of the upper end of the grinding disc and inserted into a containing groove in the bottom of the upper half shaft, a first spring is installed at the top in the containing groove, the first spring stretches to push the grinding disc to abut against the bottom in the conical guide groove, and under the cooperation effect of the conical guide groove and the grinding disc, ink can be conveniently guided.

Description

Technical Field

[0001] The utility model relates to the field of printing presses, and more specifically to an ink stirring device for printing presses. Background Art

[0002] A gravure printing machine is a machine that uses a gravure plate for printing. The image and text part of the printing plate is concave, while the blank part is on the same plane as the outer circle of the printing plate cylinder. It is printed by round-to-round direct printing. The printing plate is made directly on the printing plate cylinder and inking is done by ink immersion or inkjet. Due to the thick ink layer, quick-drying ink with strong volatility is used, and a drying device is required.

[0003] The Chinese patent authorization announcement number: CN216137144U provides an ink stirring device for a gravure printing machine. This patent sets a rolling mechanism composed of a connecting rod and a rolling wheel, and cooperates with a control mechanism composed of a control cylinder, a servo motor, a threaded rod, a slider, and a telescopic rod, and a grinding ring and a rotating disk. It can efficiently roll, grind and crush fine particles in the ink, solving the problem that the existing stirring equipment in the ink cannot crush the fine particles mixed in the ink, and these fine particles are easy to damage the ink scraper blade during use, affecting the normal use of the equipment.

[0004] The above-mentioned gravure printing machine ink stirring device grinds the particles in the ink by setting a rotating disk and a grinding ring to rotate and rub against each other. However, since the top of the grinding ring and the rotating disk are both flat in design, the particles are easily accumulated on the upper ends of the grinding ring and the rotating disk and cannot enter the gap between the grinding ring and the rotating disk, thereby reducing the crushing effect of the particles in the device. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model aims to provide an ink stirring device for a printing press, which can be realized by fixing a fixed disk in the middle part of a stirring drum, and a conical material guide groove is arranged on the inner side of the fixed disk, and a grinding disk fixed to the outer side of a rotating shaft is arranged in the middle part of the fixed disk, and conical inclined surfaces are arranged on the upper and lower ends of the grinding disk, the bottom of the grinding disk is inserted in the conical material guide groove at the lower end of the fixed disk, a limiting rod is arranged in the middle part of the upper end of the grinding disk and is inserted in the receiving groove at the bottom of the upper semi-shaft, and a first spring is arranged on the top of the receiving groove, the first spring is stretched to push the grinding disk to abut against the bottom of the conical material guide groove, and the ink can be guided conveniently under the cooperation of the conical material guide groove and the grinding disk, so that the particles in the ink can quickly enter the gap between the conical material guide groove and the grinding disk, and the grinding disk has a certain activity space under the abutting action of the first spring, and can adaptively complete the grinding of particles of different sizes, thereby effectively improving the functionality of the stirring device.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] An ink stirring device for a printing press comprises a stirring drum, a rotating shaft is rotatably installed in the middle of the stirring drum, the rotating shaft comprises an upper semi-shaft and a lower semi-shaft, a partition is fixedly installed in the upper end of the stirring drum, the upper semi-shaft is located in the upper end of the partition, and the lower semi-shaft is located below the partition, a fixed plate is fixedly installed in the middle of the stirring drum, a conical material guide groove is arranged in the upper end of the fixed plate, a discharge port which penetrates the conical material guide groove is arranged in the middle of the fixed plate, a grinding disc is fixedly installed on the upper end of the lower semi-shaft, and the grinding disc is provided with A conical inclined surface, and the grinding disc is located at the lower end of the conical material guide groove, the inclined surface of the lower end of the grinding disc is adapted to the shape of the conical material guide groove, a limit rod is fixedly installed in the middle of the upper end of the grinding disc, a receiving groove is provided at the lower end of the upper semi-shaft, the limit rod is movably inserted in the receiving groove, a first spring is fixedly installed at the top of the receiving groove, the bottom of the first spring is fixedly connected to the limit rod, limit slide grooves are provided on both sides of the receiving groove, second limit bars are fixedly installed on both sides of the limit rod, and the second limit bar is movably clamped in the limit slide groove.

[0010] Furthermore, a motor cover is fixedly installed in the middle of the upper end of the mixing drum, a servo motor is fixedly installed inside the motor cover, the output end of the servo motor is fixedly connected to the upper half shaft, an ink inlet tube is fixedly installed on the left side of the upper end of the mixing drum, an ink discharge tube is fixedly installed on the right side of the lower end of the mixing drum, a positioning rod is fixedly installed in the middle of the lower end of the mixing drum, the shape of the lower half shaft is cylindrical, and the positioning rod is inserted into the lower end of the lower half shaft.

[0011] Furthermore, the four ends of the outer side of the upper semi-shaft are fixedly installed with a first limit strip, the outer side of the upper semi-shaft is sleeved with a preliminary grinding component, the preliminary grinding component is located on the upper end of the partition, the preliminary grinding component includes a sleeve, the sleeve is movably sleeved on the outer side of the upper semi-shaft, the four ends of the inner side of the sleeve are provided with limit grooves, the first limit strip is clamped in the limit groove, the upper end of the sleeve is fixedly installed with a second spring, and the second spring is wound around the upper end of the outer side of the upper semi-shaft, two stirring rods symmetrically distributed on the left and right are fixedly installed on the middle and lower ends of the outer side of the sleeve, and a grinding cylinder is movably sleeved on the outer side of the lower stirring rod.

[0012] Furthermore, both sides of the partition are provided with feed openings, and a control valve is fixedly embedded in the upper end of the feed opening.

[0013] Furthermore, a stirring blade is fixedly installed at the lower end of the outer side of the lower semi-shaft, and a filter assembly is fixedly installed at the upper end of the outer side of the lower semi-shaft, and the filter assembly is located below the discharge port. The filter assembly includes a limiting cylinder and a conical filter cylinder, and the conical filter cylinder is installed in the middle part of the outer side of the lower semi-shaft by a fixed connection method, and the diameter of the conical filter cylinder is narrow at the bottom and wide at the top. The limiting cylinder is installed at the upper end of the conical filter cylinder by a fixed connection method, and discharge holes are arranged at the four corners of the lower end of the limiting cylinder, and limiting retaining rings are fixedly installed at the upper and lower ends of the outer side of the limiting cylinder, and a movable sealing cylinder is movably sleeved on the outer side of the limiting cylinder, and the inner diameter of the movable sealing cylinder is matched with the outer diameter of the limiting cylinder, and electromagnets are fixedly embedded at the four ends of the inner part of the upper limiting retaining ring, and magnetic blocks are fixedly embedded at the four corners of the upper end of the movable sealing cylinder, and the magnetic blocks are magnetically connected to the electromagnets.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) This solution can be achieved by fixing a fixed disk in the middle of the mixing drum, and a conical material guide groove is provided on the inner side of the fixed disk, and a grinding disk fixed to the outer side of the rotating shaft is installed in the middle of the fixed disk, and conical inclined surfaces are provided on the upper and lower ends of the grinding disk, the bottom of the grinding disk is inserted into the conical material guide groove at the lower end of the fixed disk, a limiting rod is installed in the middle of the upper end of the grinding disk and is inserted into the receiving groove at the bottom of the upper half shaft, and a first spring is installed at the top of the receiving groove, the first spring is extended to push the grinding disk to abut against the bottom of the conical material guide groove, and the ink can be guided conveniently under the cooperation of the conical material guide groove and the grinding disk, so that the particles in the ink can quickly enter the gap between the conical material guide groove and the grinding disk, and the grinding disk has a certain movable space under the abutment of the first spring, and can adaptively complete the grinding of particles of different sizes, thereby effectively improving the functionality of the stirring device.

[0017] (2) By arranging a positioning rod at the bottom of the mixing drum and inserting it into the lower end of the lower half shaft, the rotating shaft can be positioned by the positioning rod, making the rotating shaft more stable during use.

[0018] (3) The second spring is extended by default, pushing the bottom of the two grinding cylinders to abut against the top of the partition, and when the shaft rotates, it can drive the sleeve, the stirring rod and the grinding cylinder to rotate as a whole. The stirring rod can stir the ink, and the grinding cylinder rolls on the upper end of the partition to perform preliminary grinding of the particles. A second spring applies pressure on the upper end of the grinding cylinder to improve the grinding effect.

[0019] (4) In the default state, the electromagnet is energized and the magnet repel the magnetic block, pushing the movable sealing cylinder downward to seal the discharge hole at the lower end of the limit cylinder. The ink and particulate matter that have been precisely ground at the grinding disc will directly flow into the conical filter cylinder for final filtration, and the filtered ink can be directly discharged from the ink discharge pipe for use; the staff can regularly clean the particulate matter in the conical filter cylinder, change the current direction of the electromagnet, so that the electromagnet and the magnetic block are magnetically attracted, the movable sealing cylinder moves upward, the discharge hole is opened, and the servo motor is started to rotate the shaft and the filter assembly as a whole. Under the centrifugal action, the remaining particulate matter in the conical filter cylinder will be discharged from multiple discharge holes, which is convenient for cleaning large particles. The quality of the ink can be further improved by setting the filter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the external structure of the ink stirring device in the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the mixing drum in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the preliminary grinding assembly in the utility model;

[0023] Figure 4 For the utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 5 For the utility model Figure 4 A schematic diagram of the structure of the movable sealing cylinder in the open state;

[0025] Figure 6 For the utility model Figure 2 Enlarged view of point B in the middle.

[0026] Description of the numbers in the figure:

[0027] 1. Mixing drum; 2. Ink inlet tube; 3. Motor cover; 4. Servo motor; 5. Rotating shaft; 51. Upper half shaft; 511. First limit bar; 512. Storage slot; 513. Limit slide; 52. Lower half shaft; 521. Grinding disc; 5211. Limit rod; 5212. Second limit bar; 5213. First spring; 522. Mixing blade; 523. Filter assembly; 5231. Limiting drum; 52311. Discharging hole; 52312, limit ring; 52313, electromagnet; 5232, conical filter cartridge; 5233, movable sealing cartridge; 52331, magnetic block; 6, positioning rod; 7, ink discharge tube; 8, fixed plate; 81, discharge port; 9, partition; 91, feed port; 92, control valve; 10, preliminary grinding assembly; 101, sleeve; 1011, limit groove; 102, stirring rod; 103, grinding cylinder; 104, second spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Embodiment 1:

[0032] See also Figure 2 and Figure 6A printing ink stirring device comprises a stirring drum 1, a rotating shaft 5 is rotatably installed in the middle of the stirring drum 1, the rotating shaft 5 comprises an upper semi-shaft 51 and a lower semi-shaft 52, a partition 9 is fixedly installed at the upper end of the stirring drum 1, the upper semi-shaft 51 is located at the upper end of the partition 9, and the lower semi-shaft 52 is located below the partition 9, a fixed plate 8 is fixedly installed in the middle of the stirring drum 1, a conical material guide groove is arranged at the upper end of the fixed plate 8, a discharge port 81 which is connected with the conical material guide groove is arranged in the middle of the fixed plate 8, a grinding disc 521 is fixedly installed at the upper end of the lower semi-shaft 52, the upper and lower ends of the grinding disc 521 are both provided with conical inclined surfaces, and the grinding disc 521 is located at the conical guide groove. At the lower end of the material trough, the inclined surface of the lower end of the grinding disc 521 is adapted to the shape of the conical material guide trough, a limiting rod 5211 is fixedly installed in the middle of the upper end of the grinding disc 521, a receiving groove 512 is provided at the lower end of the upper semi-shaft 51, the limiting rod 5211 is movably inserted in the receiving groove 512, a first spring 5213 is fixedly installed at the top of the receiving groove 512, the bottom of the first spring 5213 is fixedly connected to the limiting rod 5211, limiting slide grooves 513 are provided on both sides of the receiving groove 512, second limiting strips 5212 are fixedly installed on both sides of the limiting rod 5211, and the second limiting strips 5212 are movably clamped in the limiting slide grooves 513. The lower half shaft 52 is connected to the upper half shaft 51 through the grinding disc 521 and the limiting rod 5211, and the grinding disc 521 and the limiting rod 5211 are elastically connected to the upper half shaft 51 through the first spring 5213. The first spring 5213 is stretched by default, pushing the grinding disc 521 downward so that its bottom abuts against the conical material guide groove in the fixed plate 8. The ink enters the fixed plate 8 and can directly enter the gap between the conical material guide groove and the grinding disc 521 for grinding through the guidance of the conical material guide groove. The setting of this structure can help the stirring device to quickly guide the material, thereby improving the functionality and grinding quality of the device.

[0033] See also Figure 1-2 A motor cover 3 is fixedly installed in the middle of the upper end of the mixing drum 1, and a servo motor 4 is fixedly installed inside the motor cover 3. The output end of the servo motor 4 is fixedly connected to the upper semi-shaft 51. An ink inlet pipe 2 is fixedly installed on the left side of the upper end of the mixing drum 1, and an ink discharge pipe 7 is fixedly installed on the right side of the lower end of the mixing drum 1. A positioning rod 6 is fixedly installed in the middle of the lower end of the mixing drum 1. The shape of the lower semi-shaft 52 is cylindrical, and the positioning rod 6 is inserted into the lower end of the lower semi-shaft 52. When in use, by arranging the positioning rod 6 at the bottom of the mixing drum 1 and inserting it into the lower end of the lower semi-shaft 52, the rotating shaft 5 can be positioned by the positioning rod 6, so that the rotating shaft 5 is more stable when in use. The ink of the printing press enters the mixing drum 1 through the ink inlet pipe 2, and is discharged from the ink discharge pipe 7 after stirring and grinding. By installing the servo motor 4, starting the servo motor 4 can drive the rotating shaft 5 to rotate.

[0034] See also Figure 2-3The first limiting strips 511 are fixedly installed at the four ends of the outer side of the upper semi-shaft 51, and the preliminary grinding assembly 10 is sleeved on the outer side of the upper semi-shaft 51. The preliminary grinding assembly 10 is located at the upper end of the partition 9. The preliminary grinding assembly 10 includes a sleeve 101, which is movably sleeved on the outer side of the upper semi-shaft 51. The four ends of the inner side of the sleeve 101 are all provided with limiting grooves 1011. The first limiting strips 511 are clamped in the limiting grooves 1011. The upper end of the sleeve 101 is fixedly installed with a second spring 104, and the second spring 104 is wound around the upper end of the outer side of the upper semi-shaft 51. The middle part and the outer side of the sleeve 101 are Two stirring rods 102 symmetrically distributed on the left and right are fixedly installed at the lower end, and a grinding cylinder 103 is movably sleeved on the outer side of the stirring rod 102 at the lower end. When in use, the second spring 104 is extended by default, pushing the bottom of the two grinding cylinders 103 to abut against the top of the partition 9, and when the rotating shaft 5 rotates, it can drive the sleeve 101, the stirring rod 102 and the grinding cylinder 103 to rotate as a whole. The stirring rod 102 can stir the ink, and the grinding cylinder 103 rolls on the upper end of the partition 9 to perform preliminary grinding of the particles, and the upper end of the grinding cylinder 103 is pressurized by the second spring 104 to improve the grinding effect.

[0035] A feed opening 91 is provided on both sides of the partition 9, and a control valve 92 is fixedly embedded in the upper end of the feed opening 91. When in use, after the preliminary grinding component 10 grinds to a certain extent, the control valve 92 is opened to allow the ink after preliminary grinding and stirring to flow from the feed opening 91 into the fixed plate 8 below.

[0036] See also Figure 2 and Figure 4-5A stirring blade 522 is fixedly installed at the lower end of the outer side of the lower semi-shaft 52, and a filter assembly 523 is fixedly installed at the upper end of the outer side of the lower semi-shaft 52. The filter assembly 523 is located below the discharge port 81. The filter assembly 523 includes a limiting cylinder 5231 and a conical filter cylinder 5232. The conical filter cylinder 5232 is fixedly connected to the middle part of the outer side of the lower semi-shaft 52, and the diameter of the conical filter cylinder 5232 is narrow at the bottom and wide at the top. The limiting cylinder 5231 is fixedly connected to the conical filter cylinder 5232. The limiting cylinder 5231 has a discharge hole 52311 at the four corners of the lower end. The upper and lower ends of the outer side of the limiting cylinder 5231 are fixedly installed with a limiting retaining ring 52312. The outer side of the limiting cylinder 5231 is movably sleeved with a movable sealing cylinder 5233. The inner diameter of the movable sealing cylinder 5233 is adapted to the outer diameter of the limiting cylinder 5231. The four ends of the upper limiting retaining ring 52312 are fixedly embedded with an electromagnet 52313. The four corners of the upper end of the movable sealing cylinder 5233 are fixedly embedded with a magnetic block 52331. The magnetic block 52331 is fixedly embedded with a magnetic block 52331. 31 is magnetically connected to the electromagnet 52313. When in use, in the default state, the electromagnet 52313 is energized and the magnetic block 52331 is repelled, pushing the movable sealing cylinder 5233 downward to seal the discharge hole 52311 at the lower end of the limit cylinder 5231. The ink and particulate matter that have been precisely ground at the grinding disc 521 will directly flow into the conical filter cylinder 5232 for final filtration, and the filtered ink can be directly discharged from the ink discharge pipe 7 for use; the staff can regularly check the conical filter cylinder 5232 for the final filtration. To clean the particles, change the current direction of the electromagnet 52313, so that the electromagnet 52313 and the magnetic block 52331 are magnetically attracted, the movable sealing cylinder 5233 moves up, the discharge hole 52311 is opened, and the servo motor 4 is started to rotate the rotating shaft 5 and the filter component 523 as a whole. Under the centrifugal effect, the particles remaining in the conical filter cylinder 5232 will be discharged from the multiple discharge holes 52311, which is convenient for cleaning large particles. By setting the filter component 523, the quality of the ink can be further improved.

[0037] The working principle of the utility model is as follows: first, the device is connected to a power source, and the ink of the printing press enters the mixing drum 1 through the ink inlet pipe 2. The servo motor 4 is started to drive the rotating shaft 5 to rotate. When the rotating shaft 5 rotates, the sleeve 101, the stirring rod 102 and the grinding drum 103 can be driven to rotate as a whole. The stirring rod 102 can stir the ink, and the grinding drum 103 rolls on the upper end of the partition 9 to perform preliminary grinding of the particles. The upper end of the grinding drum 103 has a second spring 104 to apply pressure to improve the grinding effect. After the preliminary grinding assembly 10 is ground to a certain extent, the control valve 92 is opened to allow the ink after preliminary grinding and stirring to flow from the discharge port 91 into the lower fixed plate 8, and can be directly guided by the conical guide groove to enter the gap between the conical guide groove and the grinding disc 521 for grinding. The ink and particles that have been precisely ground at the grinding disc 521 will directly flow into the conical filter drum 5232 for final filtration, and the filtered ink can be directly discharged from the ink discharge pipe 7 for use. The staff can regularly clean the particles in the conical filter cartridge 5232, change the current direction of the electromagnet 52313, make the electromagnet 52313 and the magnetic block 52331 magnetically attracted, move the movable sealing cylinder 5233 upward, open the discharge hole 52311, and start the servo motor 4 to rotate the shaft 5 and the filter assembly 523 as a whole. Under the centrifugal effect, the particles remaining in the conical filter cartridge 5232 will be discharged from the multiple discharge holes 52311, which is convenient for cleaning large particles. The quality of the ink can be further improved by setting the filter assembly 523.

[0038] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An ink stirring device for a printing press, comprising a stirring drum (1), characterized in that: A rotating shaft (5) is rotatably mounted in the middle of the mixing drum (1), the rotating shaft (5) comprising an upper semi-shaft (51) and a lower semi-shaft (52); a partition (9) is fixedly mounted in the upper end of the mixing drum (1), the upper semi-shaft (51) is located in the upper end of the partition (9), and the lower semi-shaft (52) is located below the partition (9); a fixed disk (8) is fixedly mounted in the middle of the mixing drum (1), a conical material guide groove is provided in the upper end of the fixed disk (8), a discharge port (81) which is connected to the conical material guide groove is provided in the middle of the fixed disk (8); a grinding disc (521) is fixedly mounted in the upper end of the lower semi-shaft (52), the grinding disc (521) is provided with conical inclined surfaces at both the upper and lower ends, and the grinding disc (521) is located in the lower end of the conical material guide groove, The inclined surface at the lower end of the grinding disc (521) is adapted to the shape of the conical material guide groove, a limiting rod (5211) is fixedly installed in the middle of the upper end of the grinding disc (521), a receiving groove (512) is provided at the lower end of the upper semi-shaft (51), the limiting rod (5211) is movably inserted in the receiving groove (512), a first spring (5213) is fixedly installed at the top of the receiving groove (512), the bottom of the first spring (5213) is fixedly connected to the limiting rod (5211), limiting sliding grooves (513) are provided on both sides of the receiving groove (512), and second limiting strips (5212) are fixedly installed on both sides of the limiting rod (5211), and the second limiting strips (5212) are movably clamped in the limiting sliding grooves (513).

2. The ink stirring device for a printing press according to claim 1, characterized in that: A motor cover (3) is fixedly mounted in the middle of the upper end of the mixing drum (1), a servo motor (4) is fixedly mounted inside the motor cover (3), an output end of the servo motor (4) is fixedly connected to the upper half shaft (51), an ink inlet pipe (2) is fixedly mounted on the left side of the upper end of the mixing drum (1), and an ink outlet pipe (7) is fixedly mounted on the right side of the lower end of the mixing drum (1).

3. The ink stirring device for a printing press according to claim 1, characterized in that: A positioning rod (6) is fixedly installed in the middle of the lower end of the mixing drum (1); the lower half shaft (52) is cylindrical in shape; and the positioning rod (6) is inserted into the lower end of the lower half shaft (52).

4. The ink stirring device for a printing press according to claim 1, characterized in that: The four outer ends of the upper half shaft (51) are all fixedly mounted with first limit strips (511), and the outer side of the upper half shaft (51) is sleeved with a preliminary grinding assembly (10), and the preliminary grinding assembly (10) is located at the upper end of the partition (9).

5. The ink stirring device for a printing press according to claim 4, characterized in that: The preliminary grinding assembly (10) comprises a sleeve (101), the sleeve (101) is movably sleeved on the outer side of the upper semi-shaft (51), the four inner ends of the sleeve (101) are provided with limit grooves (1011), the first limit strip (511) is clamped in the limit groove (1011), a second spring (104) is fixedly mounted on the upper end of the sleeve (101), and the second spring (104) is wound around the upper end of the outer side of the upper semi-shaft (51), two stirring rods (102) symmetrically distributed on the left and right are fixedly mounted on the middle part and the lower end of the outer side of the sleeve (101), and a grinding cylinder (103) is movably sleeved on the outer side of the stirring rod (102) at the lower end.

6. The ink stirring device for a printing press according to claim 1, characterized in that: Both sides of the partition plate (9) are provided with feed openings (91), and a control valve (92) is fixedly embedded in the upper end of the feed opening (91).

7. The ink stirring device for a printing press according to claim 1, characterized in that: A stirring blade (522) is fixedly mounted on the lower end of the outer side of the lower half shaft (52), and a filter assembly (523) is fixedly mounted on the upper end of the outer side of the lower half shaft (52), wherein the filter assembly (523) is located below the discharge port (81).

8. The ink stirring device for a printing press according to claim 7, characterized in that: The filter assembly (523) comprises a limiting cylinder (5231) and a conical filter cylinder (5232), wherein the conical filter cylinder (5232) is mounted on the middle part of the outer side of the lower semi-shaft (52) by means of a fixed connection, and the diameter of the conical filter cylinder (5232) is narrow at the bottom and wide at the top, and the limiting cylinder (5231) is mounted on the upper end of the conical filter cylinder (5232) by means of a fixed connection, and discharge holes (52311) are arranged at the four corners of the lower end of the limiting cylinder (5231), and the upper and lower ends of the outer side of the limiting cylinder (5231) are A limit retaining ring (52312) is fixedly installed, a movable sealing cylinder (5233) is movably sleeved on the outer side of the limit cylinder (5231), the inner diameter of the movable sealing cylinder (5233) is adapted to the outer diameter of the limit cylinder (5231), the four ends of the upper limit retaining ring (52312) are fixedly embedded with electromagnets (52313), the four corners of the upper end of the movable sealing cylinder (5233) are fixedly embedded with magnetic blocks (52331), and the magnetic blocks (52331) are magnetically connected to the electromagnet (52313).

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