A grinding device for ink printing pigment particles

Abstract

The application discloses an ink printing pigment particle grinding device, which comprises a casing, chambers are formed in the left and right side walls of the casing, an intermediate roller is rotatably connected to the casing, two movable blocks are slidably arranged in the two chambers, outer side rollers are rotatably connected between the left and right corresponding movable blocks, the left and right sides of the casing are provided with front and back adjusting members to adjust the distance between the outer side rollers and the intermediate roller, and a material returning mechanism is arranged on the casing. The flow guide plate drives the material scraping knife to rotate and contact the front outer side roller, the pigment with a fineness not meeting the requirements can be scraped from the front outer side roller, and the pigment with a fineness not meeting the requirements can be guided back to the space between the intermediate roller and the outer side roller to be ground again. The speed of the returned pigment is high, the efficiency is high, the risk of mixing the pigment meeting the requirements after grinding with the pigment not meeting the requirements is reduced, and the risk of excessive grinding of the pigment meeting the requirements affecting the performance of the ink and the printing quality is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grinding equipment, and particularly relates to a grinding device for ink printing pigment particles. BACKGROUND

[0002] Grinding pigment particles is a key step in ink production, which can significantly improve the quality of ink and printing effect. At present, three-roll grinding machines are generally used to grind ink printing pigment particles. The three-roll grinding machine has three horizontally arranged rollers, and the pigment particles are ground to the required fineness by the shearing force and extrusion action of the three rollers. Although the existing three-roll grinding machine can grind the pigment particles to the required fineness, the following defects still exist in the actual use process.

[0003] After the ground pigment is scraped off from the outer roller, it is necessary to check whether the grinding degree of the pigment meets the requirements. If it is found that the requirements are not met, the distance between the outer roller and the middle roller is adjusted again, and the manually ground pigment that does not meet the requirements is manually scooped up and poured back between the middle roller and the outer roller for regrinding. Such manual operation is not only slow and inefficient, but also easily causes the ground pigment that meets the requirements to mix with the ground pigment that does not meet the requirements, thereby causing the ground pigment that meets the requirements to be overground, and affecting the performance of the ink and the printing quality. SUMMARY

[0004] The present application aims to provide a grinding device for ink printing pigment particles, which can guide the pigment that does not meet the grinding requirements back between the middle roller and the outer roller for regrinding.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A grinding device for ink printing pigment particles, comprising a shell, chambers are opened on the left and right side walls of the shell, a middle roller is rotatably connected to the shell, two movable blocks are slidably arranged in the two chambers, an outer roller is rotatably connected between the corresponding two movable blocks, the outer roller on the front side is higher than the middle roller, a hopper is installed on the top rear side of the shell, two adjusting members are arranged on the left and right sides of the shell to adjust the distance between the outer roller and the middle roller, a material returning mechanism is arranged on the shell, the material returning mechanism comprises two connecting plates connected to the rear sides of the two movable blocks on the front side, a rotating shaft is rotatably connected between the two connecting plates, the rotating shaft is slidably connected to the shell, a guide plate is connected to the rotating shaft, the guide plate is located on the upper side of the middle roller and on the rear side of the outer roller on the front side, a scraping knife is connected to the front side of the guide plate, a feed inlet is opened on the bottom front side of the guide plate for the pigment to enter, a locking member one is arranged on the right outer wall of the shell to limit the rotation of the rotating shaft, a connecting plate is connected to the front side of each of the two movable blocks on the front side, a scraping frame is rotatably connected between the two connecting plates to scrape the pigment on the outer roller on the front side, a locking member two is arranged on the right outer wall of the shell to limit the rotation of the scraping frame, and a driving mechanism is arranged in the shell to drive the middle roller and the outer roller to rotate.

[0006] Preferably, a cleaning and maintenance mechanism is arranged in the shell to clean and maintain the middle roller and the outer roller, the cleaning and maintenance mechanism comprises a movable plate slidably connected to the shell through a guide rod, an electric push rod one is installed on the movable plate, an arc-shaped storage frame is connected to the telescopic rod of the electric push rod one, the storage frame is located on the lower side of the middle roller and the outer roller, a brush is slidably arranged on the rear side of the storage frame and located on the lower side of the middle roller and the outer roller on the rear side, a silica gel plate is embeddedly installed on the rear side of the bottom of the storage frame, the top of the silica gel plate is connected to the bottom of the brush, an electric push rod two is installed on the rear side of the bottom of the storage frame, the telescopic rod of the electric push rod two is connected to the bottom of the brush, three short scrapers are arranged in the storage frame from front to back, the three short scrapers correspond to the middle roller and the outer roller one by one, the frontmost short scraper is fixedly connected in the storage frame, the middle and rear short scrapers are hingedly connected to the brush, the side away from each other of the middle and rear short scrapers is rotatably connected to a slide rod, a guide rail is connected in the storage frame to guide the slide rod to move forward and backward, three iron support plates are connected to the right outer wall of the storage frame from front to back to place cleaning cloths, the three iron support plates correspond to the middle roller and the outer roller one by one, the iron support plates are slidably connected to the right side wall of the shell, two magnets are magnetically attracted to the inner bottom of the iron support plates to press and fix the cleaning cloths, a driving member is arranged in the shell to drive the movable plate to move back and forth, an opening is opened on the left inner wall of the shell for the storage frame to enter the left chamber.

[0007] Preferably, the material scraping frame comprises a rotating shaft rotatably connected between the two connecting plates, the rotating shaft is in sliding fit with the shell, a guide plate is connected to the front of the front outer roller, a groove is formed in the inner bottom of the rear side of the guide plate, a long scraper is installed in the groove, and the top of the long scraper is flush with the inner bottom of the guide plate.

[0008] Preferably, the second locking member comprises a sliding plate slidingly arranged on the right outer wall of the shell, the sliding plate is rotatably connected to the right side of the rotating shaft, two limiting rods are fixedly connected to the right outer wall of the shell, the two limiting rods are located on the upper and lower sides of the sliding plate and are in contact with the sliding plate to limit the rotation of the sliding plate, an internally threaded sleeve is connected to the right side of the sliding plate, an externally threaded sleeve is threadedly connected to the internally threaded sleeve, a rhombic groove is formed in the internally threaded sleeve, a rhombic rod is connected to the right end of the rotating shaft and matches the rhombic groove, and the first locking member has the same structure as the second locking member.

[0009] Preferably, the lower part of the hopper is provided with an adjusting plate capable of moving forward and backward, and the adjusting plate is used for adjusting the size of the feeding amount of the hopper.

[0010] Preferably, the driving member comprises a screw rod rotatably connected to the shell, the screw rod is threadedly connected with the movable plate, a servo motor is installed in the left chamber, and the output shaft of the servo motor is connected with the screw rod.

[0011] Preferably, the adjusting member comprises a screw rod rotatably connected to the shell, a nut is threadedly connected to the screw rod, and the nut is fixedly connected to the movable block below the nut.

[0012] Preferably, the driving mechanism comprises two front and rear driving motors installed on the left side of the inner bottom of the shell, the output shaft of the front driving motor is drivingly connected with the front outer roller through a belt transmission assembly one, three tensioning wheels are rotatably connected in the left chamber from rear to front, the middle tensioning wheel is located on the inner side of the belt of the belt transmission assembly one, the front and rear tensioning wheels are located on the outer side of the belt of the belt transmission assembly one, the output shaft of the rear driving motor is drivingly connected with the middle roller through a belt transmission assembly two, face gears are connected to the left sides of the middle roller and the rear outer roller, a spur gear is rotatably connected in the left chamber, and the spur gear is located on the left side of the face gears and is in mesh with the face gears.

[0013] Preferably, lifting rods are slidingly connected to the inner walls of the left and right sides of the shell through sliding sleeves, the bottom ends of the two lifting rods are connected with guide blocks, the guide blocks are located between the middle roller and the rear outer roller and are used for guiding the pigments into the middle roller and the rear outer roller, the lower parts of the front and rear sides of the guide blocks are arc-shaped, and the front and rear sides of the guide blocks are designed as inclined surfaces.

[0014] Preferably, the middle roller and the outer roller are internally provided with electric heating elements and temperature sensors.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The guide plate drives the doctor blade to rotate and contact the front outer roller, which can scrape off the pigment that does not meet the fineness requirements from the front outer roller. The guide plate then guides the pigment that does not meet the fineness requirements back between the middle roller and the outer roller for re-grinding. The return of pigment is fast and efficient, reducing the risk of pigment that meets the fineness requirements mixing with pigment that does not meet the fineness requirements after grinding. This reduces the risk of over-grinding pigment that meets the fineness requirements affecting ink performance and printing quality. In addition, there is no need to manually shovel up the pigment that does not meet the fineness requirements after grinding and pour it back between the middle roller and the outer roller, which improves work efficiency and reduces the labor intensity of workers.

[0017] 2. The cleaning and maintenance mechanism enables automatic cleaning and oiling of the intermediate and outer rollers, as well as automatic grease removal, eliminating the need for manual cleaning, oiling, and grease removal. This further improves work efficiency, reduces the labor intensity of workers, and lowers the risk of accidents, thereby enhancing safety. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram showing the connection between the hopper and the adjusting plate of the present invention.

[0020] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the installation of the material return mechanism of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the material return mechanism of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the scraper and locking component 2 of the present invention.

[0024] Figure 7 This is a cross-sectional view of the second locking component of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the driving mechanism of the present invention. Figure 1 .

[0026] Figure 9 This is a three-dimensional structural diagram of the driving mechanism of the present invention. Figure 2 .

[0027] Figure 10 This is a schematic diagram of the installation of the cleaning and maintenance mechanism of the present invention.

[0028] Figure 11A perspective view of the cleaning and maintaining mechanism of the present application Figure 1 .

[0029] Figure 12 A perspective view of the cleaning and maintaining mechanism of the present application Figure 2 .

[0030] Figure 13 A perspective view of the cleaning and maintaining mechanism of the present application

[0031] Figure 14 A perspective view of the cleaning and maintaining mechanism of the present application

[0032] In the figure: 1 - machine shell, 11 - chamber, 12 - opening and closing door, 13 - cover plate, 14 - slide rail, 15 - limiting rod, 16 - opening, 2 - middle roller, 3 - outer roller, 4 - movable block, 5 - hopper, 51 - adjusting plate, 6 - adjusting part, 61 - screw rod, 62 - nut, 71 - connecting plate, 72 - rotating shaft, 73 - guide plate, 74 - feeding port, 75 - scraping knife, 76 - locking part one, 8 - connecting plate, 9 - scraping frame, 91 - rotating shaft, 92 - guide plate, 93 - long scraping knife, 10 - locking part two, 101 - sliding plate, 102 - inner threaded sleeve, 103 - outer threaded sleeve, 104 - rhombic rod, 105 - rhombic groove, 121 - driving motor, 122 - belt transmission assembly one, 123 - tension pulley, 124 - belt transmission assembly two, 125 - face gear, 126 - spur gear, 130 - guide rod, 131 - movable plate, 132 - electric push rod one, 133 - storage frame, 134 - electric push rod two, 135 - brush, 136 - silica gel plate, 137 - short scraping knife, 138 - guide rail, 139 - sliding rod, 1310 - iron support plate, 1311 - magnet, 1312 - screw rod, 1313 - servo motor, 141 - sliding sleeve, 142 - lifting rod, 143 - guide block. DETAILED DESCRIPTION

[0033] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out that the following detailed description is only used to further describe the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0034] An ink printing pigment particle grinding device, see Figures 1-9The utility model relates to a pigment grinding machine, including shell 1, both sides wall of shell 1 all open chamber 11, the top front side of shell 1 is hinged with the cover plate 13 that can be opened to the forward upper, shell 1 is rotatably connected with the middle roller 2, two chambers 11 all are connected with two slide rails 14 in front and back, four slide rails 14 all are slidably connected with movable block 4, and the movable block 4 of left and right corresponding two is rotatably connected with the outside roller 3 between, and the outside roller 3 of front and back two is located in the front and back of middle roller 2 two sides, and the position of outside roller 3 in front is higher than middle roller 2, and middle roller 2 and outside roller 3 all are built-in electric heating element and temperature sensor, by built-in electric heating element and temperature sensor, can provide constant temperature in the grinding process, ensure the fluidity and dispersibility of pigment, avoid pigment solidification, to improve grinding effect, the top rear side of shell 1 is embeddedly installed with hopper 5, hopper 5 is used to pour pigment between middle roller 2 and the outside roller 3 of rear side, the lower portion of hopper 5 is slidably provided with the adjusting plate 51 capable of moving forward and backward, the adjusting plate 51 is used to adjust the size of hopper 5 feeding amount, and the left and right sides of shell 1 are equipped with two adjusting pieces 6 in front and back, four adjusting pieces 6 are connected with four movable blocks 4 respectively to adjust the interval between outside roller 3 and middle roller 2, adjusting piece 6 includes the screw rod 61 rotatably connected on shell 1, the nut 62 is threadedly connected on the screw rod 61, and the nut 62 is fixedly connected on the movable block 4 below, the front side of two movable blocks 4 is connected with the connecting plate 8, and the connecting plate 8 is rotatably connected with the material scraping frame 9 between two connecting plates 8, for scraping the pigment on the front side of outside roller 3, and the right outer wall of shell 1 is equipped with locking piece two 10, for limiting the rotation of material scraping frame 9, and material scraping frame 9 includes the rotating shaft 91 rotatably connected between two connecting plates 8, the rotating shaft 91 is slidably connected with shell 1, the rotating shaft 91 is connected with the material guide plate 92 in front of the front side of outside roller 3, the rear side of the inner bottom of material guide plate 92 is provided with recess, the long scraper 93 is installed in the recess, the top of long scraper 93 is flush with the inner bottom of material guide plate 92, and locking piece two 10 includes the sliding plate 101 slidably arranged on the right outer wall of shell 1, the sliding plate 101 is rotatably connected on the right side of rotating shaft 91, and the right outer wall of shell 1 is fixedly connected with two limit rods 15, and two limit rods 15 are located on the upper and lower sides of sliding plate 101 and contact with sliding plate 101 to limit the rotation of sliding plate 101, the right side of sliding plate 101 is connected with the internal thread sleeve 102, the internal thread sleeve 102 is threadedly connected with the external thread sleeve 103, the external thread sleeve 103 is provided with diamond groove 105, the right end of rotating shaft 91 is connected with diamond rod 104 matched with diamond groove 105, shell 1 is equipped with the material return mechanism, and shell 1 is equipped with the drive mechanism for driving middle roller 2 and outside roller 3 to rotate.

[0035] In a preferred embodiment, referring to Figures 3-7The return mechanism comprises two connecting plates 71 connected to the rear side of the two movable blocks 4 respectively, a rotating shaft 72 rotatably connected between the two connecting plates 71, the rotating shaft 72 slidingly fitted with the casing 1, a flow guide plate 73 connected to the rotating shaft 72, the flow guide plate 73 located above the middle roller 2 and behind the front outer roller 3, a front side of the flow guide plate 73 connected with a paint scraping knife 75 for scraping the paint on the front outer roller 3, a feed port 74 formed in the bottom of the flow guide plate 73 for the paint to enter, a locking member one 76 provided on the right side wall of the casing 1 for limiting the rotation of the rotating shaft 72, the locking member one 76 having the same structure as the locking member two 10, a slide plate 101 on the locking member one 76 rotatably connected to the right side of the rotating shaft 72, and a diamond-shaped rod 104 on the locking member one 76 connected to the right end of the rotating shaft 72.

[0036] In a preferred embodiment, referring to Figure 8 and Figure 9 The driving mechanism comprises two driving motors 121 installed on the bottom left side of the inner side of the casing 1, an output shaft of the front driving motor 121 drivingly connected with the front outer roller 3 through a belt transmission assembly one 122, the belt transmission assembly one 122 consisting of two pulleys and a belt, one of the pulleys connected to the output shaft of the front driving motor 121, the other pulley connected to the left side of the front outer roller 3, the belt sleeved between the two pulleys, three tension pulleys 123 rotatably connected in the left chamber 11 from back to front, the middle tension pulley 123 located inside the belt of the belt transmission assembly one 122, the front and rear tension pulleys 123 located outside the belt of the belt transmission assembly one 122, the middle tension pulley 123 higher than the front and rear tension pulleys 123, through the cooperation of the three tension pulleys 123, the belt of the belt transmission assembly one 122 can always be kept in a taut state when the front outer roller 3 is adjusted in position, an output shaft of the rear driving motor 121 drivingly connected with the middle roller 2 through a belt transmission assembly two 124, the belt transmission assembly two 124 having the same structure as the belt transmission assembly one 122, face gears 125 connected to the left side of the middle roller 2 and the rear outer roller 3, spur gears 126 rotatably connected in the left chamber 11, the spur gears 126 located to the left of the face gears 125 and meshing with the face gears 125.

[0037] Before the pigment grinding work is carried out, the screw rod 61 is rotated to drive the nut 62 to move the movable block 4 to the direction of approaching or moving away from the middle roller 2, thereby adjusting the position of the outer roller 3 in the front-back direction, adjusting the distance between the outer roller 3 and the middle roller 2, and then grinding the pigment to the required fineness. The movement of the front movable block 4 drives the connecting plate 71 and the connecting plate 8 to move, thereby synchronously moving the long scraper 93 and the scraping knife 75, ensuring that the relative position between the long scraper 93 and the front outer roller 3 and the relative position between the scraping knife 75 and the front outer roller 3 remain stable. Then control the driving motor 121 to work, the front driving motor 121 works through the belt transmission assembly one 122 to drive the front outer roller 3 to rotate, the rear driving motor 121 works through the belt transmission assembly two 124 to drive the middle roller 2 to rotate, the middle roller 2 rotates through the meshing action of the face gear 125 and the spur gear 126 to drive the rear outer roller 3 to rotate, and the rotation directions of the outer roller 3 and the middle roller 2 are opposite. Then pour the pigment into the hopper 5, and pour the pigment into the middle roller 2 and the rear outer roller 3 through the hopper 5, and move the adjusting plate 51 forward to reduce the feeding amount of the hopper 5, or move the adjusting plate 51 backward to increase the feeding amount of the hopper 5, so as to ensure the size of the feeding amount of the hopper 5 to adapt, and avoid that the feeding amount of the hopper 5 is too large to affect the grinding effect. The rotation directions of the outer roller 3 and the middle roller 2 are opposite, which can grind the pigment and transport the ground pigment forward, and then manually check whether the fineness of the pigment ground by the middle roller 2 and the front outer roller 3 meets the requirements, if the fineness of the pigment meets the requirements, the long scraper 93 directly scrapes the pigment with the required fineness on the front outer roller 3, and then the pigment with the required fineness is discharged forward and downward along the guide plate 92, and a collection container is placed below the guide plate 92 to collect the pigment with the required fineness. If the fineness of the pigment does not meet the requirements, rotate the external thread sleeve 103 on the locking piece two 10, thereby rotating the rhombic rod 104 in it through the rhombic slot 105 on it, and then rotating the rotating shaft 91, rotating the rotating shaft 91 through the guide plate 92 to drive the long scraper 93 to rotate forward and upward and separate from the front outer roller 3, so as to avoid that the long scraper 93 scrapes the pigment with the front outer roller 3 which does not meet the requirements. When the external thread sleeve 103 on the locking piece two 10 rotates, it moves to the left through the thread cooperation with the internal thread sleeve 102 on it, the internal thread sleeve 102 on the locking piece two 10 can lock the external thread sleeve 103 in it, thereby locking the rhombic rod 104 on the locking piece two 10, and then locking the rotating shaft 91 to avoid the rotating shaft 91 from rotating by itself, so as to ensure the position stability of the guide plate 92 and the long scraper 93.When the outer threaded sleeve 103 on the second locking piece 10 is rotated, and the outer threaded sleeve 103 on the first locking piece 76 is rotated, the rotating shaft 72 is rotated, the rotating shaft 72 rotates the guide plate 73 to rotate the scraping knife 75 forward and upward to contact the front outer side roller 3, so as to scrape the pigment with unqualified fineness on the front outer side roller 3, and the scraped pigment with unqualified fineness enters the guide plate 73 through the feeding port 74, and then the pigment with unqualified fineness flows back along the guide plate 73 to the middle roller 2 and the rear outer side roller 3 for regrinding. The inner threaded sleeve 102, the outer threaded sleeve 103 and the rhombic rod 104 on the first locking piece 76 are matched to lock the rotating shaft 72, so as to ensure the position stability of the guide plate 73 and the scraping knife 75. When the pigment with unqualified fineness is guided back to the middle roller 2 and the rear outer side roller 3, the distance between the outer side roller 3 and the middle roller 2 is adjusted again, so as to ensure that the subsequently ground pigment has qualified fineness. When the pigment ground by the middle roller 2 and the front outer side roller 3 has qualified fineness, the outer threaded sleeve 103 on the second locking piece 10 and the outer threaded sleeve 103 on the first locking piece 76 are immediately reversed, so that the rotating shaft 72 is reversed to rotate the scraping knife 75 backward and downward to be separated from the front outer side roller 3, so as to avoid scraping the pigment with qualified fineness on the front outer side roller 3, and the rotating shaft 91 is reversed to rotate the long scraping knife 93 backward and downward to contact the front outer side roller 3 through the guide plate 92, so as to scrape the pigment with qualified fineness on the front outer side roller 3. Thus, the device can scrape the pigment with unqualified fineness on the front outer side roller 3 by rotating the scraping knife 75 to contact the front outer side roller 3 through the guide plate 73, and can guide the pigment with unqualified fineness back to the middle roller 2 and the outer side roller 3 for regrinding through the guide plate 73, so that the speed of the backflow pigment is fast and the efficiency is high, the risk of mixing the ground pigment with qualified fineness and the pigment with unqualified fineness is reduced, and the risk of excessive grinding of the ground pigment with qualified fineness affecting the performance of the ink and the printing quality is reduced. In addition, the ground pigment with unqualified fineness after grinding does not need to be manually scooped and poured back to the middle roller 2 and the outer side roller 3, so that the work efficiency is improved and the labor intensity of workers is reduced. Since the long scraping knife 93 is installed in the groove on the inner bottom of the guide plate 92, the top of the long scraping knife 93 is flush with the inner bottom of the guide plate 92, so that there is no gap between the long scraping knife 93 and the guide plate 92, so as to ensure that the pigment flows smoothly along the long scraping knife 93 and the guide plate 92 downward, and the material jamming is avoided.

[0038] The middle roller 2 and the outer side roller 3 need to be cleaned and oiled after use, so as to maintain the middle roller 2 and the outer side roller 3, and the oil on the middle roller 2 and the outer side roller 3 needs to be scraped off before the middle roller 2 and the outer side roller 3 are used again. At present, the cleaning and oiling and the scraping of the oil are generally manually operated. Such manual operation is not only slow and low in efficiency, but also prone to accidents and low in safety. In order to solve the above problems, in a preferred embodiment, as shown inFigures 9-14 The cleaning and maintaining mechanism is arranged in the casing 1 and used for cleaning and maintaining the intermediate roller 2 and the outer rollers 3. The cleaning and maintaining mechanism comprises a guide rod 130 connected in the casing 1, both ends of the guide rod 130 extend into the left and right two cavities 11 respectively, the guide rod 130 is slidably connected with a movable plate 131, the movable plate 131 is provided with an electric push rod I 132, the telescopic rod of the electric push rod I 132 is connected with an arc-shaped storage frame 133, the storage frame 133 is located at the lower side of the intermediate roller 2 and the outer rollers 3, the rear side of the storage frame 133 is slidably provided with a brush 135 located at the lower side of the intermediate roller 2 and the rear outer roller 3, a silica gel plate 136 is embeddedly arranged at the rear side of the bottom of the storage frame 133, the top of the silica gel plate 136 is connected with the bottom of the brush 135, an electric push rod II 134 is arranged at the rear side of the bottom of the storage frame 133, the telescopic rod of the electric push rod II 134 is connected with the bottom of the brush 135, three short scrapers 137 are arranged in the storage frame 133 from front to back, the shape of the short scrapers 137 is L-shaped, the three short scrapers 137 correspond to the intermediate roller 2 and the outer rollers 3 one by one, the frontmost short scraper 137 is fixedly connected in the storage frame 133, the middle and the last short scrapers 137 are hingedly arranged on the brush 135, the sides away from each other of the middle and the last short scrapers 137 are rotatably connected with slide rods 139, two groups of guide rails 138 are connected in the storage frame 133, the number of each group of the guide rails 138 is two, the two guide rails 138 in each group are symmetrically arranged, the two slide rods 139 are slidably connected in the two groups of the guide rails 138, the guide rails 138 are used for guiding the slide rods 139 to move forward and backward, three iron supporting plates 1310 are connected on the right side wall of the storage frame 133 from front to back, used for placing cleaning cloths, the three iron supporting plates 1310 correspond to the intermediate roller 2 and the outer rollers 3 one by one, the iron supporting plate 1310 is slidably arranged on the right side wall of the casing 1, the shape of the iron supporting plate 1310 is T-shaped, two magnets 1311 are magnetically attracted to the inner bottom of the T-shaped iron supporting plate 1310, used for pressing and fixing the cleaning cloth, the casing 1 is provided with a driving member used for driving the movable plate 131 to move left and right reciprocatingly, the driving member comprises a screw rod 1312 rotatably connected on the casing 1, the screw rod 1312 is located below the intermediate roller 2, the screw rod 1312 is threadedly connected with the movable plate 131, a servo motor 1313 is arranged in the left cavity 11, the output shaft of the servo motor 1313 is connected with the screw rod 1312, an opening 16 is formed on the left inner wall of the casing 1, used for the storage frame 133 to enter the left cavity 11, three opening and closing doors 12 are hingedly arranged on the right inner wall of the casing 1 from front to back, the three opening and closing doors 12 correspond to the three iron supporting plates 1310 one by one, through the arrangement of the opening and closing doors 12, the cleaning cloth is convenient to replace.

[0039] The magnet 1311 is removed from the iron support plate 1310, and then the cleaning cloth is placed on the iron support plate 1310, and the front and back sides of the cleaning cloth are bent down and attached to the inner top of the T-shaped iron support plate 1310, and then the magnet 1311 is placed on the inner top of the iron support plate 1310, and the magnet 1311 is fixed on the iron support plate 1310 by the magnetic force, so as to press and fix the cleaning cloth on the iron support plate 1310, and then the solid paste grease (lubricating grease) is placed on the brush 135, and the brush 135 is a silica gel brush, and the bristles of the silica gel brush are relatively thick, which can stably support the solid paste grease (lubricating grease), and ensure that the solid paste grease (lubricating grease) is subsequently brushed between the middle roller 2 and the outer roller 3. Initially, the storage frame 133 and the iron support plate 1310 are accommodated in the left chamber 11, and after the pigment grinding is completed, the electric push rod one 132 is controlled to drive the storage frame 133 to drive the iron support plate 1310 to move upwards, so that the cleaning cloths on the three iron support plates 1310 are respectively in contact with the middle roller 2 and the outer roller 3. The electric push rod two 134 is controlled to drive the brush 135 to move upwards, so that the lubricating grease on the brush 135 moves upwards and contacts the middle roller 2 and the outer roller 3 behind. When the brush 135 moves upwards, the two short scrapers 137 connected with the brush 135 are swung downwards through the limiting of the guide rail 138 and the slide rod 139, so that the top of the two short scrapers 137 connected with the brush 135 is lower than the top of the iron support plate 1310, to avoid that the two short scrapers 137 connected with the brush 135 subsequently move to the right and scrape the lubricating grease on the middle roller 2 and the outer roller 3 behind, and the slide rod 139 slides in the guide rail 138. Then the servo motor 1313 drives the lead screw 1312 to rotate, to drive the movable plate 131 to move to the right, and the movable plate 131 moves to the right to drive the storage frame 133 to move to the right through the electric push rod one 132. When the storage frame 133 moves to the right, the cleaning cloths on the iron support plates 1310 first contact the middle roller 2 and the outer roller 3, to clean the residual pigment on the middle roller 2 and the outer roller 3. At this time, the middle roller 2 and the outer roller 3 continue to rotate, to ensure that the middle roller 2 and the outer roller 3 are thoroughly cleaned. When the brush 135 moves to the right with the storage frame 133, the lubricating grease thereon is applied to the cleaned area of the middle roller 2 and the outer roller 3 behind, and the middle roller 2 rotates and can transfer the lubricating grease thereon to the outer roller 3 in front.When the iron support plate 1310 moves to the right into the right chamber 11, the cleaning cloth on the iron support plate 1310 can be replaced. When the pigment grinding work is needed, the driving motor 121 is controlled to work to make the middle roller 2 and the outer roller 3 rotate, and then the electric push rod two 134 is controlled to drive the brush 135 to move downward, so that the lubricating grease on the brush 135 moves downward and is separated from the middle roller 2 and the rear outer roller 3. When the brush 135 moves downward, the two short scrapers 137 connected with the brush 135 are pushed to swing upward and reset through the limiting of the guide rail 138 and the sliding rod 139, so that the top of the two short scrapers 137 connected with the brush 135 is higher than the top of the iron support plate 1310, thereby making the three short scrapers 137 contact with the middle roller 2 and the outer roller 3 respectively. Then the servo motor 1313 is controlled to drive the lead screw 1312 to reverse, so as to drive the movable plate 131 to move left, thereby driving the storage frame 133 to move left. When the storage frame 133 moves left, the short scrapers 137 first contact with the middle roller 2 and the outer roller 3 to scrape the lubricating grease on the middle roller 2 and the outer roller 3. The scraped lubricating grease falls into the storage frame 133 for collection. The lubricating grease can be blocked by the silica gel plate 136 to avoid sliding into the lower side of the brush 135. When the iron support plate 1310 moves left with the storage frame 133, the residual lubricating grease on the middle roller 2 and the outer roller 3 is cleaned by the cleaning cloth on the iron support plate 1310. Thus, the device can realize automatic cleaning and oiling of the middle roller 2 and the outer roller 3, and automatic scraping of the grease, without manual cleaning, oiling and scraping operation. The working efficiency is further improved, the labor intensity of workers is further reduced, the risk of accidents is reduced, and the safety is improved.

[0040] In a preferred embodiment, referring to Figure 3 and Figure 8 The left and right inner walls of the shell 1 are connected with sliding sleeves 141, the sliding sleeves 141 are slidingly connected with lifting rods 142, the bottom ends of the lifting rods 142 are connected with material guiding blocks 143, the material guiding blocks 143 are located between the middle roller 2 and the rear outer roller 3, and are used for guiding the pigment between the middle roller 2 and the rear outer roller 3. The lower parts of the front and rear sides of the material guiding block 143 are arc-shaped, which can better fit the middle roller 2 and the rear outer roller 3. The front and rear sides of the material guiding block 143 are designed as inclined surfaces, so as to more smoothly guide the pigment between the middle roller 2 and the rear outer roller 3.

[0041] The material guiding block 143 can smoothly guide the pigment dropped from the hopper 5 between the middle roller 2 and the rear outer roller 3, effectively block the pigment, and prevent the pigment from overflowing from the left and right ends of the middle roller 2 and the rear outer roller 3, thereby reducing the waste of pigment and ensuring that all the pigment can be effectively ground.

[0042] The above described embodiments only express the preferred embodiments of the present application, which are described in more detail and in more specifically, but can not be understood as the limitation of the patent scope of the present application. It should be noted that for the ordinary skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present application, which all belong to the protection scope of the present application.

Claims

1. A grinding device for ink printing pigment particles, comprising a housing (1), with chambers (11) on both the left and right side walls of the housing (1), an intermediate roller (2) rotatably connected to the housing (1), two movable blocks (4) slidingly arranged in each of the two chambers (11), and an outer roller (3) rotatably connected between the two corresponding movable blocks (4), characterized in that, The outer roller (3) on the front side is higher than the middle roller (2). A hopper (5) is installed on the rear side of the top of the casing (1). Two adjusting parts (6) are provided on the left and right sides of the casing (1) to adjust the distance between the outer roller (3) and the middle roller (2). The casing (1) is provided with a return mechanism, which includes two connecting plates (71) respectively connected to the rear side of the two movable blocks (4) on the front side. A rotating shaft (72) is rotatably connected between the two connecting plates (71). The rotating shaft (72) is slidably engaged with the casing (1). A guide plate (73) is connected to the rotating shaft (72). The guide plate (73) is located on the upper side of the middle roller (2) and on the front outer roller (5). 3) On the rear side, the front side of the guide plate (73) is connected to a scraper (75), and the bottom front side of the guide plate (73) has an inlet (74) for pigment to enter. The outer wall of the right side of the housing (1) is provided with a locking part (76) to limit the rotation of the rotating shaft (72). The front sides of the two movable blocks (4) on the front side are connected with connecting plates (8). The two connecting plates (8) are rotatably connected with a scraper frame (9) to scrape off the pigment on the outer roller (3) on the front side. The outer wall of the right side of the housing (1) is provided with a locking part (10) to limit the rotation of the scraper frame (9). The housing (1) is provided with a drive mechanism to drive the intermediate roller (2) and the outer roller (3) to rotate. The housing (1) is equipped with a cleaning and maintenance mechanism for cleaning and maintaining the intermediate roller (2) and the outer roller (3). The cleaning and maintenance mechanism includes a movable plate (131) that is slidably connected to the housing (1) via a guide rod (130). An electric push rod (132) is mounted on the movable plate (131). An arc-shaped storage frame (133) is connected to the telescopic rod of the electric push rod (132). The storage frame (133) is located below the intermediate roller (2) and the outer roller (3). The rear side of the storage frame (133) is slidably equipped with a middle roller. The brush (135) is located on the lower side of the roller (2) and the rear outer roller (3). A silicone plate (136) is embedded in the rear side of the bottom of the storage frame (133). The top of the silicone plate (136) is connected to the bottom of the brush (135). An electric push rod (134) is installed on the rear side of the bottom of the storage frame (133). The telescopic rod of the electric push rod (134) is connected to the bottom of the brush (135). Three short scrapers (137) are arranged in the storage frame (133) from front to back. The three short scrapers (137) are connected to the middle roller ( 2) Corresponding one-to-one with the outer roller (3), the short scraper (137) at the front end is fixedly connected to the storage frame (133), the short scrapers (137) at the middle and rear ends are hinged to the brush (135), and the middle and rear short scrapers (137) are rotatably connected to the side away from each other with a slide rod (139). The storage frame (133) is connected to a guide rail (138) for guiding the slide rod (139) to move back and forth. Three iron support plates (1310) are connected from front to back on the outer wall of the right side of the storage frame (133). For placing the cleaning cloth, three iron support plates (1310) correspond one-to-one with the middle roller (2) and the outer roller (3). The iron support plates (1310) slide in cooperation with the right side wall of the machine housing (1). The bottom inner side of the iron support plate (1310) has two magnets (1311) for pressing and fixing the cleaning cloth. The machine housing (1) is provided with a drive unit for driving the movable plate (131) to move back and forth. The left inner wall of the machine housing (1) has an opening (16) for the storage frame (133) to enter the left chamber (11).

2. The grinding device for ink printing pigment particles according to claim 1, characterized in that, The scraper (9) includes a rotating shaft (91) rotatably connected between two connecting plates (8). The rotating shaft (91) is slidably engaged with the housing (1). A guide plate (92) located in front of the outer roller (3) is connected to the rotating shaft (91). A groove is opened on the rear side of the bottom inner side of the guide plate (92). A long scraper (93) is installed in the groove. The top of the long scraper (93) is flush with the bottom inner side of the guide plate (92).

3. The grinding device for ink printing pigment particles according to claim 2, characterized in that, Locking component two (10) includes a sliding plate (101) that is slidably mounted on the outer wall of the right side of the housing (1). The sliding plate (101) is rotatably connected to the right side of the rotating shaft (91). Two upper and lower limit rods (15) are fixedly connected to the outer wall of the right side of the housing (1). The two limit rods (15) are located on the upper and lower sides of the sliding plate (101) and contact the sliding plate (101) to restrict the rotation of the sliding plate (101). An internal thread sleeve (102) is connected to the right side of the sliding plate (101). An external thread sleeve (103) is internally threaded to the internal thread sleeve (102). A diamond groove (105) is opened in the external thread sleeve (103). A diamond rod (104) that matches the diamond groove (105) is connected to the right end of the rotating shaft (91). The structure of locking component one (76) is the same as that of locking component two (10).

4. The grinding device for ink printing pigment particles according to claim 3, characterized in that, The lower part of the hopper (5) is provided with an adjustment plate (51) that can move back and forth. The adjustment plate (51) is used to adjust the amount of material fed into the hopper (5).

5. The grinding device for ink printing pigment particles according to claim 4, characterized in that, The drive unit includes a lead screw (1312) that is rotatably connected to the housing (1). The lead screw (1312) is threadedly connected to the movable plate (131). A servo motor (1313) is installed in the left chamber (11). The output shaft of the servo motor (1313) is connected to the lead screw (1312).

6. The grinding device for ink printing pigment particles according to claim 5, characterized in that, The adjusting component (6) includes a screw (61) rotatably connected to the housing (1), a nut (62) threaded onto the screw (61), and the nut (62) fixedly connected to the movable block (4) directly below it.

7. A grinding device for ink printing pigment particles according to claim 6, characterized in that, The drive mechanism includes two drive motors (121) installed on the left side of the bottom inside the housing (1). The output shaft of the front drive motor (121) is connected to the outer roller (3) on the front side through the first belt drive assembly (122). Three tensioning wheels (123) are rotatably connected from back to front in the left chamber (11). The middle tensioning wheel (123) is located inside the belt of the first belt drive assembly (122), and the tensioning wheels (123) on the front and rear sides are located outside the belt of the first belt drive assembly (122). The output shaft of the rear drive motor (121) is connected to the middle roller (2) through the second belt drive assembly (124). The left side of the middle roller (2) and the outer roller (3) are both connected to face gears (125). The left chamber (11) is rotatably connected to a spur gear (126). The spur gear (126) is located to the left of the face gear (125) and meshes with the face gear (125).

8. The grinding device for ink printing pigment particles according to claim 7, characterized in that, Lifting rods (142) are slidably connected to the inner walls of the left and right sides of the housing (1) via sliding sleeves (141). The bottom ends of the two lifting rods (142) are connected to guide blocks (143). The guide blocks (143) are located between the intermediate roller (2) and the rear outer roller (3) and are used to guide pigment between the intermediate roller (2) and the rear outer roller (3). The lower parts of the front and rear sides of the guide blocks (143) are arc-shaped, and the front and rear sides of the guide blocks (143) are sloped.

9. A grinding device for ink printing pigment particles according to claim 8, characterized in that, Both the intermediate roller (2) and the outer roller (3) are equipped with built-in electric heating elements and temperature sensors.

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