Ink mixing device for printing press and use method thereof

Abstract

The present invention relates to an ink mixing device of a printing press, comprising a machine table and a reciprocating assembly on the top. Four vertical guide rods support the top plate and the frame plate of the upper and lower layers, and the top plate is connected to the frame plate through a first electric cylinder to control its lifting. The first cylinder and the second cylinder are arranged horizontally on the frame plate, and the second cylinder pushes the vertical square reciprocating plate to achieve forward and backward lifting, and the printing assembly and the ink mixing assembly are installed on the reciprocating plate. The printing assembly consists of a stabilizing plate on the top of the third cylinder, a bridging fork frame and a brush knife, and a concave screen and a brush plate are arranged in front of the frame plate. The ink mixing assembly includes a base installed on the stabilizing plate, an inverted motor, a mixing seat, a crushing knife, a spoiler and a material box, and is equipped with a flow valve and a drainage hood to guide the ink to the screen printing; it can effectively solve various problems encountered in the mixing process of traditional printing inks, especially for the mixing treatment of inks with different viscosities and multi-component inks.

Description

Technical Field

[0001] The invention belongs to the technical field of printing presses, and in particular relates to an ink mixing device of a printing press. Background Art

[0002] In the modern printing industry, the quality of printing ink directly affects the final effect of the printed product. In order to ensure the color consistency, image clarity and ink adhesion of the printed product, the mixing uniformity of the ink is particularly important. However, due to the precipitation of pigment particles and the separation of resin and solvent during the production, transportation and storage of the ink, the ink often appears in a semi-solid state.

[0003] Traditional ink mixing methods mostly rely on manual stirring or simple mechanical stirring, but these methods often fail to achieve the ideal mixing effect when faced with high-viscosity, multi-component inks. Specifically, large particle condensates in the ink cannot be effectively dispersed, and there are still uneven colors or residual particles after mixing. In addition, the stirring speed and strength of traditional equipment are difficult to dynamically adjust according to the state of the ink, resulting in incomplete or excessive stirring, affecting printing quality, which has become an urgent problem for printing companies and needs to be solved urgently. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an ink mixing device for a printing press, and the specific technical solution is as follows:

[0005] The present invention provides an ink mixing device for a printing press, which comprises a machine platform and a reciprocating assembly arranged on the top, a top plate and a frame plate of two layers are sleeved by four vertically symmetrical guide rods, a first electric cylinder is invertedly penetrated through the top plate and connected to the frame plate, which is used to control the up and down lifting of the frame plate, a first cylinder and a second cylinder connected end to end are arranged horizontally on the frame plate step by step, a vertical square reciprocating plate is connected to the pushing part of the second cylinder, which is used to control the front and back lifting of the reciprocating plate, and a printing assembly and an ink mixing assembly are arranged on the front of the reciprocating plate;

[0006] The printing assembly includes a stabilizing plate supported by a third air cylinder attached to the reciprocating plate wall. A fork is longitudinally bridged with the stabilizing plate and is parallel to the reciprocating plate. A brush knife is connected to the lower part of the fork. The front edge of the frame plate is provided with a concave screen plate perpendicular to the brush knife. Below the screen plate, there is a printing plate arranged longitudinally. The ink mixing assembly includes a base seated on the stabilizing plate, in which an inverted motor is embedded. A mixing seat is sleeved on the output end of the motor. On the square shaft of the mixing seat, a pair of inverted "冖"-shaped crushing knives that move up and down and a spring above and below a turbulence disk are sequentially sleeved. On one side of the crushing knife with a clockwise rotation direction, there is an inclined edge, and on the other side, there are regularly arranged "W"-shaped sawteeth for stirring the ink. The crushing knife is overall centrosymmetric. On the edge of the disk surface of the turbulence disk, there are multiple inclined mixing teeth arranged, and on its circumferential surface, there are sharp shredding knives extending in a clockwise direction for mixing the ink. A cylindrical material box is sleeved on the outer periphery of the base, and a cover is embedded at the top. A flow valve is provided at the bottom edge of the material box, and a trapezoidal drainage cover pointing to the brush knife is equipped for guiding the ink to the screen plate for printing;

[0007] Unscrew the cover and put various printing inks into the material box. The spring on the mixing seat is compressed, causing the crushing knife and the turbulence disk to move downward along the square shaft and get closer, reducing the distance. The motor is started, driving the crushing knife and the turbulence disk on the mixing seat to start rotating slowly, beginning the initial stage of ink mixing. The large particle condensates in the ink are broken up by mechanical force, and the ink gradually changes from a semi-solid state to a colloid until the ink semi-solid at the bottom of the material box cylinder starts to be preliminarily mixed, starting the second stage of ink mixing. The crushing knife and the turbulence disk on the mixing seat are no longer受压 and reset along the square shaft with the spring, and the distance gradually increases. The motor speed increases, prompting the crushing knife and the turbulence disk to reset as soon as possible. Under the action of shear force, the colloid structure of the ink is further damaged, and the pigments, resins, and solvents start to be redispersed and evenly mixed, starting the final stage of ink mixing. The crushing knife and the turbulence disk complete the reset, the distance increases to the maximum, and the motor speed is the maximum. During the high-speed stirring process, mechanical energy is converted into the kinetic energy of internal molecules, causing the originally precipitated and aggregated particles to redistribute in the solvent and form a stable suspension. Finally, with the continuous stirring, the viscosity of the ink will gradually decrease and stabilize, changing from a colloid state to a fluid state to complete the mixing. The flow valve controls the ink flow, and the drainage cover guides the ink to the screen plate to start printing.

[0008] As a preferred technical solution of the present invention, multiple through holes are evenly distributed on the mixing teeth of the turbulence disk for screening ink particles for sufficient stirring.

[0009] As a preferred technical solution of the present invention, the inner wall of the drainage cover is provided with a channel composed of evenly arranged diversion balls for the mixed transportation of ink.

[0010] As a preferred technical solution of the present invention, an end cover is sleeved on the top of the square shaft and connected by threads for cleaning and replacing the crushing knife and the spoiler.

[0011] As a preferred technical solution of the present invention, a guide rail is embedded in the bottom of the brush plate, and locking cylinders are symmetrically provided at both ends thereof for auxiliary locking of the brush plate;

[0012] The product to be printed is placed on each printing plate, and the locking cylinder is started to push the printing plate on the guide rail towards locking to assist in completing printing.

[0013] As a preferred technical solution of the present invention, a second transverse electric cylinder is provided at the bottom of the brush plate to adjust the transverse spacing of the brush plate.

[0014] As a preferred technical solution of the present invention, a pair of shock absorbers are symmetrically connected to the back of the reciprocating plate and arranged in parallel with the second cylinder to reduce the vibration generated by reciprocating printing.

[0015] As a preferred technical solution of the present invention, the rod section of the guide rod passing through the frame plate is sleeved with a shaft sleeve and connected to the frame plate to maintain the stability of the up and down reciprocating motion of the printing assembly.

[0016] As a preferred technical solution of the present invention, the brush cutter is connected to the inverted mountain-shaped fork frame by bolts for replacement and maintenance in later use.

[0017] The beneficial effects of the present invention are:

[0018] The printing ink mixing device of the present invention has significant beneficial effects and can effectively solve various problems encountered in the mixing process of traditional printing inks, especially for the mixing of inks with different viscosities and multi-component inks. Through innovative structure and adaptive feedback control, segmented efficient and uniform mixing from the initial semi-solid state of ink to colloid to fluid is achieved, ensuring the fluidity and uniformity of the final ink, thereby greatly improving printing quality and production efficiency.

[0019] First, the device uses a crushing knife and a spoiler disk that move up and down along a square axis. Driven by a motor, it can achieve automatic adjustment of the ink at different mixing stages. The design of the crushing knife and spoiler disk enables them to effectively crush large particles and coagulants in the ink through small spacing and low speed operation at the initial stage of mixing. The structural design of this crushing tool is unique, with an oblique blade and regularly arranged saw teeth on its surface, which can not only refine the particles in the ink, but also redisperse the precipitated pigments. This initial stage of treatment can break the structure of the semi-solid ink and gradually transition to a colloidal state, creating a good foundation for further mixing.

[0020] Secondly, the adaptive characteristics of the device are reflected in the staged control of the mixing process. As the ink gradually transitions from a semi-solid state to a colloidal state, the crushing blade and the spoiler are no longer subject to the initial pressure, the spacing gradually increases, and the rotation speed increases. During this process, the components of the ink, such as pigments, resins, and solvents, begin to disperse further. The shear force in the device is effectively increased, ensuring that the colloidal structure is fully broken up and the pigment particles are evenly distributed throughout the ink. This stage is very critical, as it can ensure that the viscosity of the ink is within an appropriate range, avoiding a state that is too thin or too viscous, making the ink more suitable for printing.

[0021] As the ink mixing is gradually completed, the crushing blade and spoiler of the device are further restored to the predetermined position, the spacing reaches the maximum, and the motor speed is increased to the highest level, completing the final high-speed stirring stage. At this stage, the mixing device completely blends all the components in the ink through high-speed operation to ensure that the uniformity of the ink reaches the best state. The spoiler in the device can not only further break up the remaining fine particles, but also ensure that the molecules in the ink are fully released, and the pigments, resins and solvents are more evenly distributed. Finally, the ink changes from a colloidal state to a fluid state, and the viscosity gradually stabilizes. This process makes full use of the transmission of mechanical energy, so that the various components in the ink are fully mixed and evenly distributed, avoiding problems such as incomplete dispersion of local particles and uneven color that may occur in the traditional stirring and mixing process.

[0022] In addition, the flow valve and the drainage cover can control the ink flow after the ink is mixed and accurately guide it to the printing screen, ensuring the stability of the ink supply during the printing process, thereby effectively avoiding quality problems caused by ink flow fluctuations during the printing process. Whether in large-scale printing or fine printing, the system can ensure the consistency of multiple ink supplies, ensuring that the printed surface is smooth and the color is full. And through precise flow regulation, ink waste is further reduced, effectively improving the utilization rate of ink.

[0023] In summary, the present invention effectively solves the problems of low efficiency and uneven mixing in the traditional printing ink mixing process through reasonable structural design and adaptive feedback control, ensures that inks of different viscosities can be evenly mixed at all stages, and maintains a stable ink supply state during the printing process. This device not only improves the overall quality of printed products, but also greatly improves production efficiency, reduces waste, and fully guarantees economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structural schematic diagram of the present invention is shown;

[0025] Figure 2 A schematic diagram of the three-dimensional structure of the present invention is shown;

[0026] Figure 3 A front view of the present invention is shown;

[0027] Figure 4 The schematic diagram of the structure of the ink mixing assembly in the present invention is shown;

[0028] Figure 5 Shows Figure 4 Schematic diagram of the cross-sectional structure of the middle AA part;

[0029] Figure 6 A partial structural schematic diagram of the ink mixing assembly in the present invention is shown;

[0030] Figure 7 A schematic diagram of the three-dimensional structure of the spoiler in the present invention is shown;

[0031] Figure 8 A top view of the material box of the present invention is shown;

[0032] Fig. 9 A schematic diagram of the three-dimensional structure of the tangent device in the present invention is shown;

[0033] As shown in the figure: 1. Machine; 2. Reciprocating assembly; 21. First cylinder; 22. Second cylinder; 23. Guide rod; 24. Frame; 241. Bushing; 25. Top plate; 26. First electric cylinder; 27. Shock absorber; 28. Reciprocating plate; 29. ​​Second electric cylinder; 3. Ink mixing assembly; 31. Base; 32. Motor; 33. Mixing seat; 34. Crushing knife; 341. Blade; 342. Sawtooth; 343. Square shaft; 344. End cover; 35. spoiler; 351. mixing tooth; 352. crushing knife; 36. spring; 37. flow valve; 371. drainage cover; 3711. diverter ball; 38. material box; 381. tangent; 3811. liquid separator; 3812. unloading groove; 39. cover; 4. printing assembly; 41. stabilizing plate; 42. fork frame; 43. brush knife; 44. screen; 45. brush plate; 46. locking cylinder; 47. third cylinder; 48. guide rail. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Embodiment 1

[0036] In order to solve the technical problems in the background technology, an ink mixing device of a printing press is provided as follows:

[0037] Combination Figure 1-9As shown in the figure, an ink mixing device for a printing press includes a machine table 1 and a reciprocating component 2 arranged at the top. The reciprocating component 2 is composed of four vertically symmetrically arranged guide rods 23 sleeving an upper and a lower layer of top plates 25 and a frame plate 24. The top plate 25 is inversely penetrated with a first electric cylinder 26 connected to the frame plate 24 to control the up and down lifting of the frame plate 24. Horizontally and step by step on the frame plate 24, a first air cylinder 21 and a second air cylinder 22 are arranged end to end. The pushing part of the second air cylinder 22 is connected with a vertical square reciprocating plate 28 to control the front and back lifting of the reciprocating plate 28. The reciprocating plate 28 is provided with a printing component 4 and an ink mixing component 3 at the front top;

[0038] The printing component 4 includes a stabilizing plate 41 pushed by a third air cylinder 47 attached to the wall of the reciprocating plate 28. There is a fork 42 longitudinally bridged with the stabilizing plate 41 and parallel to the reciprocating plate 28. The fork 42 is connected with a brush knife 43 at the bottom. The front edge of the frame plate 24 is provided with a concave screen plate 44 perpendicular to the brush knife 43. Below the screen plate 44, there is a longitudinally arranged printing plate 45. The ink mixing component 3 includes a base 31 seated on the stabilizing plate 41, in which an inverted motor 32 is embedded. The output end of the motor 32 is sleeved with a mixing seat 33. On the square shaft 343 of the mixing seat 33, a pair of "冖"-shaped crushing knives 34 and a spring 36 above and below a turbulence disk 35 that move up and down in an inverted manner are sequentially sleeved. On the side of the crushing knife 34 with a clockwise rotation direction, an oblique cutting edge 341 is opened, and on the other side, regularly arranged "W"-shaped saw teeth 342 are provided for stirring the ink. The crushing knife 34 is overall centrosymmetric. On the edge of the disk surface of the turbulence disk 35, a plurality of oblique mixing teeth 351 are arranged, and on its peripheral surface, sharp shredding knives 352 rotating clockwise are arranged in a circumferential array for mixing the ink. The outer circumference of the base 31 is sleeved with a cylindrical material box 38, and a cover 39 is embedded at the top. A flow valve 37 is provided at the bottom edge of the material box 38, and a trapezoidal drainage cover 371 pointing to the brush knife 43 is equipped for guiding the ink to the screen plate 44 for printing;

[0039] The sealing cap 39 is unscrewed, and various printing inks are put into the material box 38. The spring 36 on the mixing seat 33 is compressed, so that the crushing knife 34 and the spoiler disk 35 move down along the square axis 343 and get closer, and the distance between them is reduced. The motor 32 is started, driving the crushing knife 34 and the spoiler disk 35 on the mixing seat 33 to rotate at a low speed, and the initial stage of ink mixing begins. The large particle condensation in the ink is broken up by mechanical force, so that the ink gradually changes from a semi-solid state to a colloid, until the semi-solid ink at the bottom of the material box 38 begins to be preliminarily mixed, and the second stage of ink mixing begins. The crushing knife 34 and the spoiler disk 35 on the mixing seat 33 are no longer compressed, and return to their original position along the square axis 343 with the spring 36, and the distance between them gradually increases, and the speed of the motor 32 increases , prompting the crushing knife 34 and the spoiler disk 35 to reset as soon as possible. Under the action of shear force, the ink colloidal structure is further destroyed, and the pigment, resin and solvent begin to be redispersed and evenly mixed, starting the final stage of ink mixing. The crushing knife 34 and the spoiler disk 35 are reset, the spacing is increased to the maximum, and the motor 32 has the maximum speed. During the high-speed stirring process, the mechanical energy is converted into the kinetic energy of the internal molecules, so that the originally precipitated and aggregated particles are redistributed in the solvent and form a stable suspension. Finally, with the continuation of stirring, the viscosity of the ink will gradually decrease and stabilize, and change from a colloidal state to a fluid state, completing the mixing, the flow valve 37 controls the ink flow, and the drainage hood 371 guides the ink to the screen 44 to start printing.

[0040] The above technical means can effectively solve various problems encountered in the mixing process of traditional printing inks, especially the mixing of inks with different viscosities and multi-component inks. Through innovative structure and adaptive feedback control, efficient and uniform mixing of the ink from the initial semi-solid state to the colloid to the fluid is achieved, ensuring the fluidity and uniformity of the final ink, thereby greatly improving the printing quality and production efficiency.

[0041] First, the device uses a crushing knife 34 and a spoiler 35 that move up and down along a square shaft 343. Driven by a motor 32, the device can achieve automatic adjustment of the ink at different mixing stages. The design of the crushing knife 34 and the spoiler 35 enables them to effectively crush large particles and coagulants in the ink through small spacing and low-speed operation at the initial stage of mixing. The crushing knife 34 has a unique structural design, with an oblique blade 341 and regularly arranged serrations 342 on its surface, which can not only refine the particles in the ink, but also redisperse the precipitated pigments. This initial stage of processing can break the structure of the semi-solid ink and gradually transition it to a colloidal state, creating a good foundation for further mixing.

[0042] Secondly, the adaptive characteristics of the device are reflected in the staged control of the mixing process. As the ink gradually transitions from a semi-solid state to a colloidal state, the crushing blade 34 and the spoiler disk 35 are no longer subjected to the initial pressure, the spacing gradually increases, and the rotation speed increases. During this process, the components of the ink, such as pigments, resins, and solvents, begin to disperse further. The shear force in the device is effectively increased to ensure that the colloidal structure is fully broken up and the pigment particles are evenly distributed throughout the ink. This stage is very critical, as it can ensure that the viscosity of the ink is within an appropriate range, avoiding a state that is too thin or too viscous, making the ink more suitable for printing.

[0043] As the ink mixing is gradually completed, the crushing blade 34 and the spoiler 35 of the device are further restored to the predetermined position, the spacing reaches the maximum, and the speed of the motor 32 is increased to the highest level, completing the final high-speed stirring stage. At this stage, the mixing device completely blends all the components in the ink through high-speed operation to ensure that the uniformity of the ink reaches the optimal state. The spoiler 35 in the device can not only further break up the remaining fine particles, but also ensure that the molecules in the ink are fully released, and the pigments, resins and solvents are more evenly distributed. Finally, the ink changes from a colloidal state to a fluid state, and the viscosity gradually stabilizes. This process makes full use of the transfer of mechanical energy, so that the various components in the ink are fully mixed and evenly distributed, avoiding problems such as incomplete dispersion of local particles and uneven color that may occur in the traditional stirring and mixing process.

[0044] In addition, through the flow valve 37 and the drainage cover 371, the ink flow can be controlled after the ink is mixed and accurately guided to the printing screen 44, ensuring the stability of the ink supply during the printing process, thereby effectively avoiding quality problems caused by ink flow fluctuations during the printing process. Whether in large-area printing or fine printing, the system can ensure the consistency of multiple ink supplies, ensuring that the surface of the printed product is smooth and the color is full. And through precise flow regulation, ink waste is further reduced, and the utilization rate of ink is effectively improved.

[0045] In summary, the present invention effectively solves the problems of low efficiency and uneven mixing in the traditional printing ink mixing process through reasonable structural design and adaptive feedback control, ensures that inks of different viscosities can be evenly mixed at all stages, and maintains a stable ink supply state during the printing process. This device not only improves the overall quality of printed products, but also greatly improves production efficiency, reduces waste, and fully guarantees economic benefits.

[0046] Embodiment 2

[0047] like Figure 4-9 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0048] In this embodiment, five "S"-shaped tangent devices 381 are embedded in the inner wall of the material box 38 at equal intervals in a spiral shape from top to bottom. The tangent devices 381 are detachably fixed to the inner wall of the material box 38, and a liquid separating blade 3811 that is larger at the top and smaller at the bottom is provided on the tip of the knife facing the inner wall of the material box 38 in a clockwise direction, which is used to divide and evenly distribute the rotating ink vortex. In addition, the tangent device 381 is symmetrically provided with an elliptical unloading groove 3812 on the back of the knife and the center of the knife tail facing the inner wall of the material box 38 in a counterclockwise direction, so as to reduce stress concentration on the tangent device 381.

[0049] The mixing teeth 351 of the spoiler plate 35 are evenly distributed with a plurality of penetrating sieve holes for screening ink particles for sufficient mixing.

[0050] The inner wall of the drainage cover 371 is provided with evenly arranged diverter balls 3711 to form a channel, and the outer wall is buried with a heating wire for stable transportation of ink.

[0051] An end cover 344 is sleeved on the top of the square shaft 343 and is connected by threads for cleaning and replacing the crushing knife 34 and the spoiler disk 35 .

[0052] Through the above technical means, firstly, by embedding "S"-shaped tangents at equal intervals in the inner wall of the material box in a spiral shape, and coordinating with the crushing knife and the spoiler to stir and mix, efficient cutting, mixing and uniform distribution of the ink are achieved. The liquid separation blade of the tangent effectively divides the rotating ink vortex, so that the ink particles are further homogenized after entering the crushing knife, which enhances the working efficiency of the crushing knife. The liquid separation blade of the tangent breaks the medium particles in the ink into finer particles, ensuring sufficient mixing in the subsequent stirring process. At the same time, the unloading groove design on the back of the tangent effectively reduces the mechanical fatigue caused by stress concentration and prolongs the service life of the device. And after the stirring of the crushing knife and the spoiler, the passive mixing of the tangent makes the stirred ink vortex more uniform. This design not only improves the overall quality of ink mixing, but also reduces the wear and maintenance frequency of mechanical parts, ensures the efficient and stable operation of the equipment, and realizes multiple mixing on the basis of low power consumption, and the synchronous stirring fully guarantees the economic benefits.

[0053] Secondly, the mixing teeth 351 on the spoiler 35 are evenly distributed with multiple penetrating sieve holes. The design of these sieve holes allows the ink particles to be fully screened and dispersed through the sieve holes during the stirring process, ensuring that the various components of the ink are more fully stirred and refined during the mixing process, thereby improving the uniformity and fluidity of the ink. This structure enables the ink to quickly break up large particles and coagulants when stirring, reducing the phenomenon of particle agglomeration, while better mixing the pigment, resin and solvent to form a stable ink suspension, improving the mixing effect and ensuring the quality of the subsequent printing process.

[0054] Then, the inner wall of the drainage hood 371 is designed with evenly arranged diverter ball 3711 channels. This design cleverly optimizes the flow path of the ink during transportation, effectively reduces the flow resistance and retention of the ink, and ensures that the ink can be smoothly and continuously transported to the printing parts. The presence of the diverter ball 3711 also plays a secondary stirring role on the ink, further ensuring the uniformity of the ink during flow, thereby avoiding printing defects caused by unstable ink flow or uneven ink distribution during the printing process. At the same time, the outer wall of the drainage hood 371 is embedded with a heating wire, which can moderately heat the ink to keep its viscosity and fluidity constant. This is particularly important when the ambient temperature is low. It can prevent the viscosity fluctuation of the ink caused by temperature changes and ensure a continuous and stable supply of ink during the printing process.

[0055] Then, in terms of cleaning and maintenance, the end cap 344 on the top of the square shaft 343 is threaded, which facilitates the removal and replacement of the crushing blade 34 and the spoiler 35. This design greatly improves the cleaning efficiency and maintenance convenience of the device. The crushing blade 34 and the spoiler 35 are the parts most susceptible to ink residue and wear during the ink mixing process. Traditional devices usually require a complicated disassembly process, resulting in long downtime and high maintenance costs. With the threaded end cap 344, the user only needs to loosen the end cap 344 to quickly disassemble and clean the parts, which greatly shortens the maintenance time, reduces the difficulty and cost of equipment operation, and improves the sustainable use of the equipment.

[0056] Embodiment 3

[0057] like Figure 1-4 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0058] A guide rail 48 is embedded at the bottom of the brush plate 45, and locking cylinders 46 are symmetrically provided at both ends thereof for auxiliary locking of the brush plate 45;

[0059] A product to be printed is placed on each brush plate 45, and the locking cylinder 46 is started to push the brush plate 45 on the guide rail 48 toward locking, thereby assisting in completing printing.

[0060] A second transverse electric cylinder 29 is disposed at the bottom of the brush plate 45 to adjust the transverse spacing of the brush plate 45 .

[0061] The brush blade 43 is connected to the inverted mountain-shaped fork frame 42 by bolts for replacement and maintenance in later use.

[0062] Through the above technical means, firstly, the cooperation of the guide rail 48 and the locking cylinder 46 embedded at the bottom of the brush plate 45 can ensure the stability of the brush plate 45 during the printing process. The guide rail 48 provides a precise movement path for the brush plate 45, and the locking cylinders 46 symmetrically arranged at both ends apply a moderate locking force to prevent the brush plate 45 from being displaced or loosened during printing. This design greatly improves the printing accuracy, avoids the problem of blurred and misaligned printing patterns caused by the displacement of the brush plate 45, and ensures the quality of the printed product.

[0063] Secondly, the design of the second horizontal electric cylinder 29 at the bottom of the brush plate 45 further improves the adjustment flexibility and printing accuracy of the brush plate 45. Through this electric cylinder, the horizontal spacing of the brush plate 45 can be accurately adjusted to adapt to the printed products of different sizes and positions. This function is particularly important for diversified printing needs. It can quickly switch between printed products of different specifications, reduce the time for equipment adjustment, and improve production efficiency. In addition, the automatic control design of the electric cylinder can accurately adjust the position of the brush plate 45 according to the specific requirements of the printing task, avoiding the errors and inconvenience of manual adjustment, and ensuring the accuracy of each printing.

[0064] In the design of the brush blade 43, this embodiment adopts a bolt connection method to fix the brush blade 43 on the inverted mountain-shaped fork frame 42. Such a design makes the replacement and maintenance of the brush blade 43 more convenient. In actual operation, the brush blade 43 is one of the parts that is most easily worn during the printing process. As the use time increases, the brush blade 43 may be worn or damaged and needs to be replaced regularly. The traditional replacement process of the brush blade 43 is usually complicated and requires the disassembly of multiple parts, which is time-consuming and labor-intensive. However, by adopting the bolt connection method, the replacement and maintenance of the brush blade 43 can be easily completed by simply removing the bolts. This design greatly shortens the maintenance time, reduces the difficulty of operation, and reduces the downtime of the equipment, thereby improving the continuity and efficiency of production.

[0065] In addition, the bolt-connected brush blade 43 structure not only facilitates the replacement of the brush blade 43, but also enhances the durability of the equipment. The brush blade 43 will be subjected to certain mechanical forces and frictional forces during operation. The bolt connection can provide a stable support to ensure that the brush blade 43 is not easy to loosen or fall off in a high-intensity working environment, thereby extending the service life of the brush blade 43. At the same time, this connection method also facilitates the disassembly and cleaning of the brush blade 43, reduces the impact of ink residue on the equipment, and further ensures the stability of printing quality.

[0066] Embodiment 4

[0067] like Figure 1-3 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0068] A pair of shock absorbers 27 are symmetrically connected to the back of the reciprocating plate 28 and arranged in parallel with the second cylinder 22 to reduce the vibration caused by reciprocating printing.

[0069] The rod section of the guide rod 23 passing through the frame plate 24 is sleeved with a shaft sleeve 241 and connected to the frame plate 24 to maintain the stability of the up and down reciprocating motion of the printing assembly 4.

[0070] Through the above technical means, firstly, a pair of shock absorbers 27 symmetrically arranged on the back of the reciprocating plate 28 play a key role in the device. During the printing process, the high-speed movement of the reciprocating plate 28 will inevitably produce vibrations, and if these vibrations are not effectively controlled, they may lead to a decrease in printing accuracy and even affect the service life of the equipment. By installing the shock absorber 27 on the back of the reciprocating plate 28, the mechanical vibration caused by the reciprocating motion can be effectively absorbed and alleviated. This design not only improves the stability of the equipment operation, but also greatly reduces the impact of vibration on printing accuracy, thereby ensuring the stability and consistency of each printing operation.

[0071] Secondly, the symmetrical design of the shock absorber 27 allows the vibration to be evenly dispersed in different directions, further improving the shock absorption effect. If the vibration is not balanced in the equipment, it may cause excessive stress on some structures of the equipment, thereby affecting the overall stability of the equipment. The symmetrical arrangement of the shock absorber 27 ensures that the vibration is evenly absorbed, so that the equipment can still maintain a good balance state when running at high speed. This design is particularly important for printing equipment that requires frequent reciprocating motion. It not only improves the durability of the equipment, but also reduces the mechanical wear caused by vibration, thereby extending the service life of the equipment.

[0072] In addition, the optimized design of the guide rod 23 structure further enhances the stability of the printing assembly 4 during reciprocating motion. The guide rod 23 passes through the frame plate 24 and is connected to the frame plate 24 through the shaft sleeve 241, so that the printing assembly 4 can maintain good guidance and stability during up and down reciprocating motion. The existence of the guide rod 23 makes the trajectory of reciprocating motion more accurate, avoiding the problem of inaccurate printing caused by trajectory deviation. The use of the shaft sleeve 241 also enhances the stability of the guide rod 23, ensuring that the guide rod 23 is not prone to shaking or deviation during movement, thereby making the entire printing process smoother and more accurate.

[0073] The stable connection between the guide rod 23 and the frame plate 24 not only improves the movement accuracy of the printing assembly 4, but also effectively prevents jitter and deviation during the movement. In traditional equipment, if the connection between the guide rod 23 and the frame plate 24 is not strong enough, shaking is likely to occur during reciprocating motion, resulting in printing deviation and reduced quality of printed products. In this embodiment, by optimizing the connection method between the guide rod 23 and the frame plate 24, the stability of the guide rod 23 during movement is ensured, making the entire printing process smoother and more stable, and avoiding quality problems caused by unstable equipment structure.

[0074] The working principle and use process of the present invention:

[0075] Step 1: Equipment inspection and preparation:

[0076] Before using the ink mixing device, firstly, you need to conduct a comprehensive inspection of the device. Confirm that all guide rods 23, frame plates 24, brush plates 45, brush blades 43 and other components are firmly installed. In particular, you need to check the status of guide rails 48 and locking cylinders 46 to ensure that they can work smoothly. At the same time, check whether the power connection of the device is normal, confirm that the circuits of the first electric cylinder 26, the second cylinder 22, the third cylinder 47, the shock absorber 27 and other components are fault-free, and all electrical equipment is in a usable state. Then, clean the inside of the material box 38 and other mixing components to ensure that there is no residual ink foreign matter to avoid affecting the mixing effect of the new ink.

[0077] Step 2: Loading ink:

[0078] Rotate and open the cover 39 on the top of the material box 38, and add the required mixed ink into the material box 38. According to the printing requirements, add different types of inks in the material box 38 one after another. When loading ink, be careful to avoid overflow and ensure that the amount of ink is moderate and does not exceed the maximum capacity of the material box 38. After loading, re-tighten the cover 39 to ensure that the material box 38 is well sealed.

[0079] Step 3: Initial Ink Mixing:

[0080] Start the motor 32, and the device will enter the initial stage of ink mixing. At this time, the spring 36 on the mixing seat 33 is compressed, and the crushing knife 34 and the spoiler disk 35 will move down along the square shaft 343, and the distance between them will decrease. The motor 32 runs at a low speed, driving the crushing knife 34 and the spoiler disk 35 to start stirring the ink. At this stage, through the action of mechanical force, large particles and coagulants in the ink are broken up, and the ink gradually changes from a semi-solid state to a colloid. This process continues until the ink at the bottom of the material box 38 begins to be initially mixed and evenly mixed.

[0081] Step 4: Mid-term ink mixing:

[0082] As the initial mixing is completed, the pressure of the spring 36 is gradually released, the crushing blade 34 and the spoiler 35 gradually return to their normal positions, and the distance between them gradually increases. At this time, the speed of the motor 32 will increase moderately, entering the mid-term mixing stage. The crushing blade 34 and the spoiler 35 operate under a higher shear force, further destroying the colloidal structure in the ink, so that the pigment, resin and solvent are redispersed and mixed evenly and form an ink vortex from top to bottom. The vortex and the spiral tangent on the inner wall of the material box are synchronously passively stirred. This stage ensures the full fusion of the various components of the ink, laying the foundation for the final printing effect.

[0083] Step 5: Final Ink Mixing:

[0084] After the ink colloid structure is fully destroyed, the equipment will enter the final mixing stage. At this time, the distance between the crushing blade 34 and the spoiler disk 35 is adjusted to the maximum, and the motor 32 runs at the highest speed. During the high-speed stirring process, the mechanical energy is converted into the kinetic energy of the ink molecules, so that the originally precipitated or aggregated particles are redistributed in the solvent to form a uniform and stable suspension. As the stirring continues, the viscosity of the ink will gradually decrease, and it will change from a colloidal state to a fluid state, completing the mixing.

[0085] Step 6: Ink delivery and printing preparation:

[0086] After the ink is mixed, the flow valve 37 is opened to control the flow of the ink. The ink is guided to the screen 44 of the printing assembly 4 through the drainage cover 371. In this process, the diverter ball 3711 channel ensures the uniformity of the ink flow and avoids blockage or uneven flow rate. At the same time, check the position of the brush knife 43 and the screen 44 to ensure that the brush knife 43 is perpendicular to the screen 44 and the brush plate 45 has been firmly locked by the locking cylinder 46.

[0087] Step 7: Execute printing:

[0088] After confirming that all preparations are completed, the printing process is started. The first electric cylinder 26 controls the frame 24 to move up and down, so that the printing component 4 and the ink mixing component 3 move synchronously. Under the push of the third cylinder 47, the brush knife 43 stably scrapes the ink through the fork frame 42, so that the ink is evenly covered on the screen 44, thereby realizing the printing operation. The connection between the guide rod 23 and the frame 24 ensures the stability of the printing component 4 in the reciprocating motion, and the shock absorber 27 effectively reduces the vibration during the motion and ensures the printing accuracy.

[0089] Step 8: Equipment cleaning and maintenance:

[0090] After printing is completed, turn off the equipment and clean it after it stops running completely. Unscrew the cover 39 of the material box 38 to remove the residual ink, and disassemble the crushing knife 34 and the spoiler 35 for thorough cleaning. If you need to replace the brush knife 43, you can easily replace it by loosening the bolts. Check the wear of the moving parts such as the guide rod 23 and the frame plate 24, and lubricate and maintain them if necessary to ensure that the equipment can still maintain a good condition when it is used next time.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ink mixing device for a printing press, comprising a machine platform (1) and a reciprocating assembly (2) arranged on the top, wherein four vertically symmetrical guide rods (23) are sleeved with a top plate (25) and a frame plate (24) of two layers, the top plate (25) being invertedly penetrated with a first electric cylinder (26) connected to the frame plate (24) for controlling the up and down movement of the frame plate (24), the frame plate (24) being laterally arranged with a first cylinder (21) and a second cylinder (22) connected end to end, the pushing part of the second cylinder (22) being connected with a vertical square reciprocating plate (28) for controlling the forward and backward movement of the reciprocating plate (28), the reciprocating plate (28) being pushed forward with a printing assembly (4) and an ink mixing assembly (3); The printing assembly (4) comprises a stabilizing plate (41) mounted on the top of a third cylinder (47) attached to the wall of the reciprocating plate (28), and a fork frame (42) longitudinally bridged with the stabilizing plate (41) and parallel to the reciprocating plate (28), a brush knife (43) being connected below the fork frame (42), a concave screen (44) being arranged at a right angle to the brush knife (43), and a brush plate (45) arranged longitudinally being arranged below the screen (44), characterized in that: The ink mixing component (3) includes a base (31) seated on the stabilizing plate (41), in which an inverted motor (32) is embedded. A mixing seat (33) is sleeved on the output end of the motor (32). On the square shaft (343) of the mixing seat (33), a pair of inverted and vertically moving "冖”-shaped crushing knives (34) and a spring (36) for the upper and lower flow deflector disks (35) are successively sleeved. On the side of the crushing knife (34) with a clockwise rotation direction, an inclined cutting edge (341) is formed, and on the other side, regularly arranged "W”-shaped sawteeth (342) are provided for stirring the ink. The crushing knife (34) is overall centrosymmetric. On the edge of the disk surface of the flow deflector disk (35), a plurality of inclined mixing teeth (351) are arranged, and on its circumferential surface, sharp shredding knives (352) turning clockwise are arrayed in a circle for mixing the ink. A cylindrical material box (38) is sleeved on the outer periphery of the base (31), and a cover (39) is embedded at the top. A flow valve (37) is provided at the bottom edge of the material box (38), and a trapezoidal drainage cover (371) equipped with a pointing brush knife (43) is used to guide the ink to the screen plate (44) for printing; On the inner wall of the material box (38), 5 "S”-shaped tangential cutters (381) are spirally and equidistantly embedded from top to bottom. They are detachably fixed to the inner wall of the material box (38). On the cutting tips facing the inner wall of the material box (38) in the clockwise direction, a liquid dividing edge (3811) that is larger at the top and smaller at the bottom is provided for dividing and equalizing the flow of the ink eddy. On the back of the cutter blade of the tangential cutter (381) facing away from the inner wall of the material box (38) in the counterclockwise direction, an oval-shaped stress relief groove (3812) is symmetrically formed at the center of the blade tail for reducing the stress concentration of the tangential cutter (381); On the mixing teeth (351) of the flow deflector disk (35), a plurality of through sieve holes are evenly distributed for screening ink particles for full stirring; on the inner wall of the drainage cover (371), a channel composed of evenly arranged flow dividing balls (3711) is provided for the mixing and conveying of the ink; A end cover (344) is sleeved on the top of the square shaft (343) and is connected by threads for cleaning and replacing the crushing knife (34) and the flow deflector disk (35).

2. The ink mixing device of a printing press according to claim 1, characterized in that: A guide rail (48) is embedded at the bottom of the printing plate (45), and locking cylinders (46) are symmetrically provided at both ends for assisting in locking the printing plate (45); On each printing plate (45), the article to be printed is placed. The locking cylinder (46) is started to push the printing plate (45) on the guide rail (48) towards locking to assist in completing the printing.

3. The ink mixing device of a printing press according to claim 2, characterized in that: A transverse second electric cylinder (29) is provided at the bottom of the printing plate (45) for adjusting the transverse spacing of the printing plate (45).

4. The ink mixing device of a printing press according to claim 1, characterized in that: On the back of the reciprocating plate (28), a pair of shock absorbers (27) are symmetrically connected and are arranged in parallel with the second cylinder (22) for reducing the vibration generated by the reciprocating printing.

5. The ink mixing device of a printing press according to claim 4, characterized in that: On the rod section of the guide rod (23) passing through the frame plate (24), a shaft sleeve (241) is sleeved and is connected to the frame plate (24) for maintaining the stability of the up and down reciprocating movement of the printing component (4).

6. The ink mixing device of a printing press according to claim 5, characterized in that: The brush knife (43) is connected to an inverted mountain-shaped fork (42) by bolts for replacement and maintenance in later use.

7. The method for using the ink mixing device of a printing press according to any one of claims 1 to 6, characterized in that: The sealing cap (39) is unscrewed, and various printing inks are added into the material box (38). The spring (36) on the mixing seat (33) is compressed, so that the crushing knife (34) and the spoiler disk (35) move down along the square axis (343) and get closer, and the distance between them decreases. The motor (32) is started, driving the crushing knife (34) and the spoiler disk (35) on the mixing seat (33) to rotate at a low speed, and the initial stage of ink mixing begins. The large particles of condensation in the ink are broken up by mechanical force, so that the ink gradually changes from a semi-solid state to a colloid state, until the semi-solid ink at the bottom of the material box (38) begins to be initially mixed, and the second stage of ink mixing begins. The crushing knife (34) and the spoiler disk (35) on the mixing seat (33) are no longer compressed, and are reset along the square axis (343) along with the spring (36), and the distance between them gradually increases. The motor (32) speeds up, prompting the crushing blade (34) and the spoiler disk (35) to reset as soon as possible. Under the action of shear force, the ink colloidal structure is further destroyed, and the pigment, resin and solvent begin to be redispersed and evenly mixed, starting the final stage of ink mixing. The crushing blade (34) and the spoiler disk (35) are reset, and the distance between them increases to the maximum. The motor (32) speed is maximum. During the high-speed stirring process, mechanical energy is converted into kinetic energy of internal molecules, so that the originally precipitated and aggregated particles are redistributed in the solvent and form a stable suspension. Finally, as the stirring continues, the viscosity of the ink will gradually decrease and stabilize, and it will change from a colloidal state to a fluid state, completing the mixing. The flow valve (37) controls the ink flow, and the drainage hood (371) guides the ink to the screen (44) to start printing.

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