Packaging box surface printing equipment

Abstract

The invention discloses packaging box surface printing equipment, and particularly relates to the field of printing equipment, the packaging box surface printing equipment comprises a rack, a conveying belt is arranged in the middle of the rack, a printing box is arranged on one side of the top of the rack, a telescopic air cylinder is arranged in the center of the top of the printing box, and a printing shell is fixedly connected to the bottom end of the telescopic air cylinder; a UV printing head is arranged in the printing shell, a limiting plate is connected to the inner wall of the side, close to the inlet, of the printing box through an electric push rod, a pressing roller frame is fixedly connected to one side of the bottom of the limiting plate, roller shafts are connected to the two sides of the bottom of the pressing roller frame through bearings, and the outer walls of the roller shafts are sleeved with pressing rollers. Servo motors are arranged on the outer walls of the two sides of the pressing roller frame. The roll shaft and the pressing roll are driven by the servo motor to rotate in the forward direction and the reverse direction, the packaging box is driven by friction force to be subjected to offset adjustment at a certain angle, therefore, the angle of the packaging box is corrected, and the printing accuracy is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printing equipment, more particularly, the present application relates to a packaging box surface printing equipment. BACKGROUND

[0002] The packaging box is a box used for packaging articles. By placing the articles in the packaging box, the contents are packaged by the packaging box, which provides good protection for the packaged articles, ensures the safety of the articles during transportation, and protects the privacy of the owner of the articles. With the continuous development of packaging boxes, the demand for packaging boxes is increasing, and packaging box printing is a necessary processing step in the production and processing of many packaging boxes.

[0003] After searching, the existing patent (publication number: CN117162671A) discloses a printing equipment for outer packaging box production and a using method, which belongs to the technical field of packaging box printing. It comprises a processing table, a printing mechanism for printing the packaging box is arranged on the processing table, a bearing mechanism for bearing the packaging box is arranged at the bottom of the printing mechanism, a conveying mechanism for packaging box feeding is arranged on one side of the bearing mechanism. By arranging the bearing mechanism, the flip plate on the bearing mechanism can realize the flipping of the packaging box, so that the ink accumulated on the packaging box can drop into the discharging box, avoiding the movement of the accumulated ink along the surface of the packaging box, causing the contamination of the printing surface. At the same time, the ink is collected. The drying mechanism is used to dry the flipped packaging box, which improves the drying efficiency of the ink on the surface of the packaging box, facilitates the subsequent processing of the packaging box, and improves the processing efficiency of the packaging box.

[0004] In the surface printing process of the traditional packaging box surface printing equipment, the cleaning mechanism and the adsorption structure often need to be independently configured with driving elements, which not only increases the size and energy consumption of the equipment, but also reduces the cleaning efficiency due to the coordination error of multiple drives. At the same time, the printing equipment often does not have an automatic ink stirring effect, and the ink in the ink cartridge may solidify when it is left for a long time, which may affect the subsequent printing effect. Therefore, a packaging box surface printing equipment is proposed to solve the above problems. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a packaging box surface printing equipment to solve the problems raised in the background art.

[0006] To achieve the above object, the application provides the following technical scheme: a packaging box surface printing equipment, comprising a rack, a conveying belt is arranged in the middle of the rack, a printing box is arranged on one side of the top of the rack, a telescopic air cylinder is arranged at the top center of the printing box, a printing shell is fixedly connected to the bottom end of the telescopic air cylinder, a UV printing head is arranged in the printing shell, an ink storage box is arranged on one side of the printing shell, a limiting plate is connected to the inner wall of the side of the printing box close to the entrance through an electric push rod, a pressure roller frame is fixedly connected to the bottom side of the limiting plate, roller shafts are connected to the bottom sides of the pressure roller frame through bearings, pressure rollers are sleeved on the outer walls of the roller shafts, servo motors are arranged on the outer walls of the two sides of the pressure roller frame, the outputs of the two groups of servo motors are connected to the corresponding roller shafts, and a high-definition camera is fixedly connected to the edge of the limiting plate.

[0007] Preferably, a connecting rod is fixedly connected to the bottom center of the limiting plate, a supporting plate is fixedly connected to the bottom end of the connecting rod, cleaning rods are connected to the bottom sides of the supporting plate through bearings, cleaning brushes are fixedly connected to the bottom ends of the cleaning rods, worm gears are connected to the top ends of the two groups of cleaning rods through the supporting plate, a worm shaft is movably connected to the top side outer wall of the supporting plate through a bearing, the thread directions of the two groups of threads on the surface of the worm shaft are opposite, and the two groups of threads of the worm shaft are meshed with the two groups of corresponding worm gears.

[0008] Preferably, a driven gear is fixedly connected to one end of the worm shaft extending to the outside of the supporting plate, a driving gear is fixedly connected to the edge of one group of roller shafts, and the driving gear and the driven gear are connected through a synchronous tooth belt.

[0009] Preferably, an adsorption box is fixedly connected to the outer wall of one side of the supporting plate, a fan shaft is connected to the inner wall of the middle of the adsorption box through a bearing, helical fans are fixedly connected to the outer wall of the fan shaft, one end of the fan shaft extends to the outside of the adsorption box, a linkage gear is fixedly connected to the end of the fan shaft, a driving gear is fixedly connected to the end of the worm shaft away from the driven gear, and the driving gear and the linkage gear are meshed and connected through an acceleration gear set.

[0010] Preferably, a dust collection box is connected to the air inlet end of the adsorption box, a filter screen is arranged in the middle of the dust collection box, the dust collection box is connected to the adsorption box, a dust suction cover is arranged on one side of the bottom of the supporting plate, the dust suction cover and the dust collection box are connected through an adsorption pipe, and an air outlet is arranged on one side of the adsorption box.

[0011] Preferably, an auxiliary frame is arranged on the side of the connecting rod away from the pressure roller frame, an auxiliary roller is connected to the bottom end of the auxiliary frame through a bearing, and the auxiliary roller is in the same horizontal plane as the pressure roller.

[0012] Preferably, the two side top edges of the printing shell are fixedly connected with fixing cylinders, the middle inner wall of the fixing cylinder is penetrated through with a rotating rod, the rotating rod and the fixing cylinder are connected through a bearing, the middle outer wall of the rotating rod is connected with a torsion spring, the two ends of the rotating rod are fixedly connected with a smoothing frame, and the end of the smoothing frame is connected with a smoothing roller through a bearing.

[0013] Preferably, the two side outer walls of the printing shell are fixedly connected with stoppers, the stopper abuts against the smoothing frame, and the smoothing frame is arranged obliquely.

[0014] Preferably, the middle outer wall of the rotating rod on one side is fixedly connected with a first bevel gear, the bottom inner wall of the ink storage box is connected with an agitating shaft through a bearing, the middle outer wall of the agitating shaft is fixedly connected with an agitating rod, the bottom end of the agitating shaft extends to the bottom end of the ink storage box through the ink storage box, the end of the agitating shaft is fixedly connected with a second bevel gear, and the second bevel gear is engaged with the first bevel gear.

[0015] Preferably, one side of the printing box is provided with a drying box, one side of the top of the drying box is provided with an air jet head, the top of the air jet head is communicated with a linkage pipe, one end of the linkage pipe away from the air jet head is communicated with an exhaust port, the top edge of the drying box is arranged with ultraviolet lamps, and one side outer wall of the printing box is fixedly connected with a controller.

[0016] The technical effects and advantages of the present application are as follows: Compared with the prior art, the packaging box surface printing equipment drives the roller shaft and the pressure roller to rotate forward and reversely through the servo motor, drives the packaging box to offset and adjust by a certain angle through the friction force, thereby realizing the correction of the angle of the packaging box, and when the roller shaft rotates, the rotation power can be transmitted to the worm through the linkage of the driving gear, the synchronous tooth belt and the driven gear, thereby driving the worm to rotate, the rotation of the pressure roller automatically drives the cleaning brush to rotate and clean, without the need of an additional motor to drive the cleaning component, thereby simplifying the structure and achieving the energy saving effect.

[0017] Compared with the prior art, when the rotating rod rotates with the rotation of the smoothing frame, the first bevel gear can be driven to rotate synchronously, the first bevel gear transmits the rotation to the agitating shaft through the engagement with the second bevel gear, thereby driving the agitating rod to rotate and agitate the ink in the ink storage box, the reciprocating rotation of the rotating rod drives the agitating rod to reciprocating rotate in the ink storage box, thereby avoiding the long-time standing of the ink to cause the bottom settlement or solidification of the ink, thereby affecting the subsequent printing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the present application; Figure 2It is a schematic view of the side view structure of the present application; Figure 3 It is a schematic view of the overall structure of the present application; Figure 4 It is a schematic view of the connection structure of the cleaning rod and the cleaning brush of the present application; Figure 5 It is a schematic view of the connection structure of the compression roller and the compression roller frame of the present application; Figure 6 It is a schematic view of the smoothing roller structure of the present application; Figure 7 It is a schematic view of the internal structure of the ink storage box of the present application; Figure 8 It is a schematic view of the connection structure of the adsorption box and the dust cover of the present application.

[0019] The reference signs are: 1, frame; 2, conveying belt; 3, printing box; 4, telescopic air cylinder; 5, printing shell; 6, UV printing head; 7, ink storage box; 8, limiting plate; 9, electric push rod; 10, compression roller frame; 11, high-definition camera; 12, compression roller; 13, servo motor; 14, connecting rod; 15, supporting plate; 16, cleaning rod; 17, cleaning brush; 18, worm gear; 19, worm; 20, driven gear; 21, driving gear; 22, synchronous toothed belt; 23, adsorption box; 24, fan shaft; 25, spiral fan; 26, linkage gear; 27, driving gear; 28, dust collection box; 29, filter screen; 30, dust cover; 31, adsorption pipe; 32, exhaust port; 33, auxiliary frame; 34, auxiliary roller; 35, fixed cylinder; 36, rotating rod; 37, torsional spring; 38, smoothing frame; 39, smoothing roller; 40, stop block; 41, first bevel gear; 42, stirring shaft; 43, stirring rod; 44, second bevel gear; 45, drying box; 46, air jet head; 47, linkage pipe; 48, ultraviolet lamp; 49, controller. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0021] As shown in the accompanying drawings Figures 1 to 8A kind of packaging box surface printing equipment shown, including rack 1, the middle part of rack 1 is provided with conveying belt 2, the top of rack 1 one side is provided with printing box 3, the top center of printing box 3 is provided with telescopic cylinder 4, the bottom end of telescopic cylinder 4 is fixedly connected with printing shell 5, the inside of printing shell 5 is provided with UV printing head 6, the side of printing shell 5 is provided with ink storage box 7, the inner wall of the side of printing box 3 close to the entrance is connected with limiting plate 8 by electric push rod 9, the bottom side of limiting plate 8 is fixedly connected with pressure roller frame 10, the bottom two sides of pressure roller frame 10 are both connected with roll shaft 11 by bearing, the outer wall of roll shaft 11 is sleeved with pressure roller 12, the two sides of the outer wall of pressure roller frame 10 are provided with servo motor 13, the output of two groups of servo motor 13 is connected with corresponding roll shaft 11 respectively, the edge of limiting plate 8 is fixedly connected with high-definition camera 111.

[0022] Among them, rack 1 is the support frame of the equipment, provides strength and stability, conveying belt 2 penetrates the middle part of rack 1, is responsible for continuously, stably conveying the packaging box to be printed to printing station and conveying away the packaging box that printing is completed, printing box 3 is fixed in the top one side of rack 1, forms the semi-sealed space of printing operation, telescopic cylinder 4 adjusts lifting height according to the thickness of packaging box, drives printing shell 5 to lift, so as to drive UV printing head 6 to print pattern to the surface of every packaging box passing below it intermittently, ink storage box 7 is adjacent to printing shell 5, stores UV ink and continuously and stably supplies ink to UV printing head 6, before printing, packaging box is conveyed to the bottom of pressure roller 12 by conveying belt 2, roll shaft 11 and pressure roller 12 are driven to rotate by servo motor 13, rotating pressure roller 12 provides forward friction, assists conveying belt 2 to push packaging box stably, and flattens the surface of packaging box, whether the packaging box that enters printing box 3 is inclined can be monitored by high-definition camera 111, when the packaging box is inclined is judged by the processing chip in controller 49 after the shooting information is sent to controller 49 by high-definition camera 111, signal can be transmitted to servo motor 13 when the packaging box is inclined, roll shaft 11 and pressure roller 12 are driven to rotate forward and reversely by one-side servo motor 13, the packaging box is driven to adjust by a certain angle by friction, so as to realize the correction of the angle of packaging box, continue to drive synchronously after correction to assist conveying and flattening effect. Embodiment

[0023] On the basis of embodiment 1, the scheme in embodiment 1 is further refined and introduced in combination with the following specific working mode, as Figures 1 to 8 As shown, see the following description in detail: As a preferred implementation, the bottom center of the limiting plate 8 is fixedly connected with a connecting rod 14, the bottom end of the connecting rod 14 is fixedly connected with a supporting plate 15, the bottom of the supporting plate 15 is rotatably connected with a cleaning rod 16 through a bearing on both sides, the bottom end of the cleaning rod 16 is fixedly connected with a cleaning brush 17, the top end of the two groups of cleaning rods 16 is connected with a worm gear 18 through the supporting plate 15, the top side of the supporting plate 15 is rotatably connected with a worm 19 through a bearing, the two groups of threads on the surface of the worm 19 are opposite, and the two groups of threads of the worm 19 are respectively meshed with the two groups of corresponding worm gears 18, wherein the connecting rod 14 rigidly connects the limiting plate 8 and the supporting plate 15, ensures that the supporting plate 15 synchronously follows the limiting plate 8 to move, the worm 19 can rotate on the top of the supporting plate 15, the bidirectional reverse threads of the worm 19 enable it to drive the two worm gears 18 to rotate in opposite directions when rotating, so as to drive the cleaning rods 16 and the cleaning brush 17 connected therewith to also rotate in opposite directions, and the rotation of the cleaning brush 17 can brush off the impurities on the surface of the passing packaging box, so as to ensure that the surface is clean, thereby improving the subsequent printing effect.

[0024] As a preferred implementation, one end of the worm 19 extends to the outside of the supporting plate 15 and is fixedly connected with a driven gear 20, the edge of one group of roller shafts 11 is fixedly connected with a driving gear 21, and the driving gear 21 is connected with the driven gear 20 through a synchronous tooth belt 22, wherein when the servo motor 13 drives the roller shaft 11 to rotate, the rotating power can be transmitted to the worm 19 through the linkage of the driving gear 21, the synchronous tooth belt 22 and the driven gear 20, so as to drive the worm 19 to rotate, and the rotation of the compression roller 12 automatically drives the cleaning brush 17 to rotate and clean, without the need for an additional motor to drive the cleaning component, thereby simplifying the structure and achieving energy-saving effect.

[0025] As a preferred implementation, one side of the supporting plate 15 is fixedly connected with a suction box 23, the middle inner wall of the suction box 23 is rotatably connected with a fan shaft 24 through a bearing, the outer wall of the fan shaft 24 is fixedly connected with a spiral fan 25, one end of the fan shaft 24 extends to the outside of the suction box 23, and the end of the fan shaft 24 is fixedly connected with a linkage gear 26, the end of the worm 19 away from the driven gear 20 is fixedly connected with a driving gear 27, and the driving gear 27 is meshingly connected with the linkage gear 26 through an acceleration gear set, wherein the rotation of the worm 19 drives the driving gear 27 to synchronously rotate, the driving gear 27 drives the linkage gear 26 to accelerate rotation through the driving of the acceleration gear set, the rotation of the linkage gear 26 drives the fan shaft 24 to synchronously rotate at high speed, so as to drive the spiral fan 25 to rotate, and the spiral fan 25 rotates to form negative pressure in the suction box 23.

[0026] As a preferred implementation, the air inlet end of the adsorption box 23 is connected with a dust collection box 28, the middle part of the dust collection box 28 is provided with a filter screen 29, the dust collection box 28 is in communication with the adsorption box 23, the bottom side of the supporting plate 15 is provided with a dust cover 30, the dust cover 30 and the dust collection box 28 are connected through an adsorption pipe 31, and one side of the adsorption box 23 is provided with an air outlet 32. Among them, the negative pressure formed in the adsorption box 23 by the rotation of the spiral fan 25 acts on the area of the dust cover 30 through the adsorption pipe 31, and the surface of the packaging box is adsorbed by the negative pressure of the dust cover 30, so as to adsorb the dust on the surface of the packaging box and the dust raised after being cleaned by the cleaning brush 17. The dust-containing air enters the dust collection box 28 through the adsorption pipe 31, and the relatively clean air is discharged through the air outlet 32 after being filtered by the filter screen 29.

[0027] As a preferred implementation, the side of the connecting rod 14 away from the press roller frame 10 is provided with an auxiliary frame 33, the bottom end of the auxiliary frame 33 is connected with an auxiliary roller 34 through a bearing, and the auxiliary roller 34 is in the same horizontal plane as the press roller 12. Among them, the auxiliary frame 33 and the auxiliary roller 34 play a role in assisting the pressing and flattening, so that the packaging box in the transportation process is cleaned by the cleaning brush 17 at the same time, and one side or both sides of the packaging box is in a state of being pressed, thereby avoiding the phenomenon that the cleaning brush 17 causes the packaging box to deviate during rotation cleaning.

[0028] As a preferred implementation, the two side top edges of the printing shell 5 are fixedly connected with fixed cylinders 35, the middle inner wall of the fixed cylinder 35 penetrates a rotating rod 36, the rotating rod 36 and the fixed cylinder 35 are connected through a bearing, the middle outer wall of the rotating rod 36 is connected with a torsional spring 37, the two ends of the rotating rod 36 are fixedly connected with a flattening frame 38, and the end part of the flattening frame 38 is connected with a flattening roller 39 through a bearing. Among them, when the printing shell 5 descends with the telescopic pneumatic cylinder 4, the flattening frame 38 descends, and when the flattening roller 39 contacts the surface of the packaging box, the flattening frame 38 is forced to rotate upward around the rotating rod 36 against the torsional force of the torsional spring 37 due to the inclined state of the flattening roller 39. During this process, the flattening roller 39 always exerts downward contact pressure on the surface of the packaging box, and the two flattening rollers 39 move towards opposite directions to unfold the packaging box, thereby further flattening the possible slight curling, lifting and wrinkling on the surface of the packaging box, ensuring the absolute flatness of the printing surface, and the torsional spring 37 provides automatic rebound force and constant flattening pressure.

[0029] As a preferred implementation, the two side outer walls of the printing shell 5 are fixedly connected with stop blocks 40, the stop blocks 40 abut against the flattening frame 38, and the flattening frame 38 is arranged in an inclined manner. Among them, the stop block 40 plays a role in limiting the initial position of the flattening frame 38, and can accurately limit the initial position of the flattening frame 38, so as to ensure that the flattening roller 39 does not swing randomly when the printing shell 5 rises.

[0030] As a preferred implementation, the middle outer wall of the one side rotating rod 36 is fixedly connected with a first bevel gear 41, the bottom inner wall of the ink storage box 7 is connected with an agitating shaft 42 through a bearing, the middle outer wall of the agitating shaft 42 is fixedly connected with an agitating rod 43, the bottom end of the agitating shaft 42 extends to the bottom end of the ink storage box 7 through the ink storage box 7, and the end of the agitating shaft 42 is fixedly connected with a second bevel gear 44, the second bevel gear 44 is engaged with the first bevel gear 41, wherein, when the rotating rod 36 rotates with the rotation of the flattening frame 38, the first bevel gear 41 can be driven to rotate synchronously, the first bevel gear 41 transmits the rotary motion to the agitating shaft 42 through the engagement with the second bevel gear 44, and then drives the agitating rod 43 to rotate and agitate the ink in the ink storage box 7, the reciprocating rotation of the rotating rod 36 drives the agitating rod 43 to reciprocate in the ink storage box 7, so that the ink is not left for a long time to cause bottoming or solidification, thereby affecting subsequent printing.

[0031] As a preferred implementation, the printing box 3 is provided with a drying box 45 on one side, the drying box 45 is provided with an air jet head 46 on one side of the top, the air jet head 46 is communicated with a linkage pipe 47 on the top, one end of the linkage pipe 47 away from the air jet head 46 is communicated with the exhaust port 32, the top edge of the drying box 45 is provided with a ultraviolet lamp 48, and the one side outer wall of the printing box 3 is fixedly connected with a controller 49, wherein, the completed packaging box is conveyed into the drying box 45 through the conveying of the conveying belt 2, the relatively clean air from the exhaust port 32 is conveyed to the air jet head 46 through the linkage pipe 47, and is sprayed to the surface of the packaging box just completed UV printing, the airflow can accelerate the complete drying of the surface layer and improve the surface finish, the ultraviolet light emitted by the ultraviolet lamp 48 irradiates the UV ink of the jet printing, causes the photoinitiator in the ink to occur photopolymerization reaction, and makes the liquid ink rapidly solidified into a solid film layer, so that the printed product is quickly shaped.

[0032] The working process of the present application is as follows: first, the packaging box is stably placed on the surface of the conveying belt 2, and the packaging box is conveyed to the bottom of the compression roller 12. The servo motor 13 drives the roller shaft 11 and the compression roller 12 to rotate. The rotating compression roller 12 provides forward friction to assist the conveying belt 2 to stably push the packaging box and smooth the surface of the packaging box. The high-definition camera 111 can monitor whether the packaging box entering the printing box 3 is inclined. When the high-definition camera 111 transmits the shooting information to the controller 49, and the controller 49 judges that the packaging box is inclined, the signal can be transmitted to the servo motor 13. The servo motor 13 drives the roller shaft 11 and the compression roller 12 to rotate forward and reverse. The packaging box is adjusted by a certain angle through the friction force, so as to realize the correction of the angle of the packaging box. After correction, synchronous driving is continued to assist conveying and smoothing effect. When the servo motor 13 drives the roller shaft 11 to rotate, the rotating power can be transmitted to the worm 19 through the linkage of the driving gear 21, the synchronous toothed belt 22 and the driven gear 20, so as to drive the worm 19 to rotate. The rotation of the compression roller 12 automatically drives the cleaning brush 17 to rotate and clean. No additional motor is needed to drive the cleaning part, which simplifies the structure and saves energy; During printing, the printing shell 5 descends with the telescopic cylinder 4, and the smoothing frame 38 descends accordingly. When the smoothing roller 39 contacts the surface of the packaging box, the smoothing frame 38 is forced to rotate upward around the rotating rod 36 to overcome the torsional force of the torsional spring 37 due to the inclined state of the smoothing roller 39. During this process, the smoothing roller 39 always applies downward contact pressure to the surface of the packaging box. The two smoothing rollers 39 move towards opposite directions to unfold the packaging box, so as to further flatten the possible slight edge curling, lifting and wrinkles on the surface of the packaging box, ensuring the absolute flatness of the printing surface. The torsional spring 37 provides automatic rebound force and constant smoothing pressure. The printed packaging box is conveyed into the drying box 45 through the conveying belt 2. The relatively clean air from the exhaust port 32 is conveyed to the air jet head 46 through the linkage pipe 47 and sprayed onto the surface of the packaging box just completed UV printing. The airflow can accelerate the complete drying of the surface layer and improve the surface finish. The ultraviolet light emitted by the ultraviolet lamp 48 irradiates the UV ink of the printing, causing the photoinitiator in the ink to undergo photopolymerization reaction, so that the liquid ink is quickly solidified into a solid film layer, thereby realizing rapid shaping of the printed packaging box.

Claims

1. A packaging box surface printing device, comprising a frame (1), characterized in that: A conveyor belt (2) is provided in the middle of the frame (1). A printing box (3) is provided on one side of the top of the frame (1). A telescopic cylinder (4) is provided at the center of the top of the printing box (3). A printing housing (5) is fixedly connected to the bottom of the telescopic cylinder (4). A UV printing head (6) is provided inside the printing housing (5). An ink storage box (7) is provided on one side of the printing housing (5). A limit switch is connected to the inner wall of the printing box (3) near the inlet via an electric push rod (9). The plate (8) has a pressure roller frame (10) fixedly connected to one side of its bottom. Both sides of the bottom of the pressure roller frame (10) are connected to roller shafts (11) through bearings. The outer wall of the roller shaft (11) is fitted with a pressure roller (12). Both sides of the outer wall of the pressure roller frame (10) are equipped with servo motors (13). The output ends of the two sets of servo motors (13) are respectively connected to the corresponding roller shafts (11). A high-definition camera (111) is fixedly connected to the edge of the limiting plate (8).

2. The packaging box surface printing equipment according to claim 1, characterized in that: A connecting rod (14) is fixedly connected to the bottom center of the limiting plate (8). A support plate (15) is fixedly connected to the bottom end of the connecting rod (14). A cleaning rod (16) is connected to both sides of the bottom of the support plate (15) through bearings. A cleaning brush (17) is fixedly connected to the bottom end of the cleaning rod (16). The top ends of the two sets of cleaning rods (16) pass through the support plate (15) and are connected to worm gears (18). A worm (19) is movably connected to the outer wall of the top side of the support plate (15) through bearings. The two sets of threads on the surface of the worm (19) are in opposite directions. The two sets of threads of the worm (19) respectively mesh with the two sets of corresponding worm gears (18).

3. The packaging box surface printing equipment according to claim 2, characterized in that: One end of the worm (19) extends to the outside of the support plate (15) and is fixedly connected to a driven gear (20). A set of rollers (11) is fixedly connected to the outer wall of the rollers. The driven gear (21) and the driven gear (20) are connected by a synchronous toothed belt (22).

4. The packaging box surface printing equipment according to claim 3, characterized in that: An adsorption box (23) is fixedly connected to one side of the outer wall of the tray (15). A blade shaft (24) is connected to the middle inner wall of the adsorption box (23) through a bearing. A spiral blade (25) is fixedly connected to the outer wall of the blade shaft (24). One end of the blade shaft (24) extends to the outside of the adsorption box (23), and a linkage gear (26) is fixedly connected to the end of the blade shaft (24). A drive gear (27) is fixedly connected to the end of the worm gear (19) away from the driven gear (20). The drive gear (27) and the linkage gear (26) are meshed and connected through an acceleration gear set.

5. The packaging box surface printing equipment according to claim 4, characterized in that: The air inlet of the adsorption box (23) is connected to a dust collection box (28). A filter screen (29) is provided in the middle of the dust collection box (28). The dust collection box (28) is connected to the adsorption box (23). A dust suction hood (30) is provided on one side of the bottom of the tray (15). The dust suction hood (30) is connected to the dust collection box (28) through an adsorption pipe (31). An exhaust port (32) is provided on one side of the adsorption box (23).

6. The packaging box surface printing equipment according to claim 2, characterized in that: An auxiliary frame (33) is provided on the side of the connecting rod (14) away from the pressure roller frame (10). The bottom end of the auxiliary frame (33) is connected to an auxiliary roller (34) through a bearing. The auxiliary roller (34) and the pressure roller (12) are on the same horizontal plane.

7. The packaging box surface printing equipment according to claim 1, characterized in that: Fixed cylinders (35) are fixedly connected to the top edges of both sides of the printed housing (5). A rotating rod (36) passes through the inner wall of the middle part of the fixed cylinder (35). The rotating rod (36) is connected to the fixed cylinder (35) through a bearing. A torsion spring (37) is connected to the outer wall of the middle part of the rotating rod (36). A smoothing frame (38) is fixedly connected to both ends of the rotating rod (36). A smoothing roller (39) is connected to the end of the smoothing frame (38) through a bearing.

8. The packaging box surface printing equipment according to claim 7, characterized in that: Both sides of the printed housing (5) are fixedly connected with blocks (40), the blocks (40) abut against the smoothing frame (38), and the smoothing frame (38) is inclined.

9. The packaging box surface printing equipment according to claim 7, characterized in that: A first bevel gear (41) is fixedly connected to the outer wall of the middle part of the rotating rod (36) on one side. A stirring shaft (42) is connected to the inner wall of the bottom of the ink storage box (7) through a bearing. A stirring rod (43) is fixedly connected to the outer wall of the middle part of the stirring shaft (42). The bottom end of the stirring shaft (42) extends through the ink storage box (7) to the bottom end of the ink storage box (7). A second bevel gear (44) is fixedly connected to the end of the stirring shaft (42). The second bevel gear (44) meshes with the first bevel gear (41).

10. The packaging box surface printing equipment according to claim 5, characterized in that: A drying chamber (45) is provided on one side of the printing box (3). An air nozzle (46) is provided on the top side of the drying chamber (45). A linkage pipe (47) is connected to the top of the air nozzle (46). The end of the linkage pipe (47) away from the air nozzle (46) is connected to the exhaust port (32). Ultraviolet lamps (48) are arranged at the top edge of the drying chamber (45). A controller (49) is fixedly connected to the outer wall of one side of the printing box (3).

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