A printing device and working method for an outer packaging box

Abstract

The present invention provides a printing device and a working method for an outer packaging box. The printing device for the outer packaging includes a first bracket, and two U-shaped frames are fixedly connected to the upper end of the first bracket; a placement rack, and the placement rack is arranged on the upper side of the first bracket through two sets of lifting components; a conveying rack, and the conveying rack is fixedly connected to the upper surfaces of the two U-shaped frames; a conveying component, and the conveying component is arranged in the conveying rack; by using this device, the lifting components are used to drive the placement rack to cooperate with the conveying component to continuously convey unprinted outer packaging materials. Compared with the traditional solution of using multiple rollers to convey outer packaging materials one by one, the use of conveying rollers is reduced, the problem that the conveying rollers cannot contact the outer packaging materials is effectively avoided, the transmission efficiency is high, and the printing reliability is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of printing equipment, and particularly relates to a printing equipment and working method for outer packaging boxes. Background Art

[0002] Outer packaging printing equipment is an indispensable key component in modern packaging industry. It is mainly used for printing information such as patterns, texts, and barcodes on outer packaging materials, ensuring accurate transmission of product information to consumers while enhancing the aesthetics and brand recognition of products. These equipment usually include various types such as flexographic printers, offset printers, screen printers, and digital printers. Among them, flexographic printing is widely used in the field of flexible packaging due to its environmental protection characteristics and high printing speed. Offset printers are suitable for high-quality image printing on rigid packaging such as cartons and cardboard boxes. Screen printers are particularly effective for products that require thick ink layers or special effects. Digital printers are increasingly favored in the market environment of small batches and multiple varieties due to their high flexibility and personalized customization capabilities. These equipment generally adopt computer control systems to achieve precise control in the automated production process, which can not only improve production efficiency but also ensure stable and reliable printing quality. In addition, with the progress of technology, modern printing equipment also has the ability of in-line production, and can be seamlessly connected with post-processing processes such as film laminating, hot stamping, and die cutting to form a complete production line to meet diverse needs. Generally speaking, outer packaging printing equipment is a high-tech product that combines multiple fields such as mechanical engineering, electronic technology, and materials science, and its development level directly affects the overall competitiveness of the packaging industry.

[0003] In the prior art, the outer packaging is usually in the form of cardboard before printing. It is transported to the lower side of the printer through a conveying structure. When the printer presses down to contact the surface of the outer packaging material, the pattern is printed on the surface of the outer packaging material. When the outer packaging material is transported to the lower side of the printer, since it is transported by conveying rollers, there is often a situation where the conveying rollers cannot contact the outer packaging material. For example, Chinese Patent Application No. CN202311142622.3, publication date is December 5, 2023, which discloses a printing equipment and usage method for producing outer packaging boxes, including a processing table, a printing mechanism for printing on 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, and a conveying mechanism for feeding the packaging box is arranged on one side of the bearing mechanism; by setting the bearing mechanism, the flip plate that can be flipped on the bearing mechanism realizes the flipping of the packaging box, so that the ink at the ink accumulation part on the packaging box can drip into the blanking box, avoiding the accumulated ink from moving along the surface of the packaging box and causing dirt on the printing surface, and at the same time realizing the collection of ink; using the drying mechanism to perform drying operation on the flipped packaging box, improving the drying efficiency of the ink on the surface of the packaging box, facilitating the subsequent processing operation of the packaging box, and improving the processing efficiency of the packaging box.

[0004] If the cardboard on the input conveyor roller is in an uneven state, it is easy to cause the accumulation of outer packaging materials inside the equipment, resulting in jamming. In addition, in order to ensure the reliability of the items conveyed on the conveyor belt, a conveyor belt with a width not much different from that of the conveyor belt needs to be set to ensure that the cardboard moves horizontally into the printing mechanism. This is not convenient for conveying cardboard of different sizes. In addition, during the conveying process of the cardboard by the conveyor roller, due to the vibration of the conveyor belt, the upper end surface of the cardboard is prone to unevenness, which affects the printing effect of the subsequent printing mechanism. In addition, during the conveying process of the conveyor belt, the cardboard is also easily affected by external dust, resulting in a poor printing effect of the subsequent printing mechanism. Summary of the Invention

[0005] The purpose of the present invention is to provide a printing device and working method for outer packaging boxes, which can prevent the conveyor roller from not being able to contact the outer packaging material when the outer packaging material is conveyed to the lower side of the printer, ensure that the material to be printed can accurately enter the printing mechanism, with high transmission efficiency and good printing effect.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A printing device for outer packaging boxes includes: a first bracket, a placement rack, a conveying rack, a conveying component, a second bracket, a push plate, and a printer main body. Two U-shaped racks are fixedly connected to the upper end of the first bracket; the placement rack is arranged on one side of the first bracket through two sets of lifting components; clamping plates are arranged on both sides of the placement rack, and the clamping plates move along the width direction of the placement rack. The conveying rack is fixedly connected to the upper surfaces of the two U-shaped racks; the conveying component is arranged inside the conveying rack; the second bracket is fixedly connected to the other side of the surface of the first bracket, and a printing pressure plate is fixedly connected to the upper end of the second bracket. Two side brackets are fixedly connected to both sides of the surface of the printing pressure plate; a connecting plate is fixedly connected to the U-shaped rack, and the connecting plate is located between the conveying component and the printing pressure plate. The upper surface of the connecting plate is smoothly arranged. The printer main body is arranged above the printing pressure plate through a control component; the push plate is arranged on the conveying rack through two sets of adjusting components; each adjusting component includes a track rack, an adjusting rack, and an adjusting block. The track rack is fixedly connected to the surfaces of the U-shaped rack and the side bracket. The adjusting rack is slidably connected inside the track rack. The adjusting block is slidably connected inside the adjusting rack. The lower end of the adjusting block is detachably connected to the upper surface of the push plate. The adjusting block moves along the inner side wall of the adjusting rack, and the adjusting rack moves along the length direction of the connecting plate. The cross-sectional area of the push plate is larger than the cross-sectional area of the cardboard, and the cross-sectional area of the printing pressure plate is matched with the cross-sectional area of the cardboard.

[0008] The above arrangement places the cardboard to be printed on the placement rack, and then adjusts the distance between the clamping blocks according to the width of different cardboards by adjusting the distance between the clamping plates on both sides of the placement rack to clamp different clamping plates, and then moves the clamping block clamping the cardboard to the conveying assembly through the lifting assembly, and then drives the push plate to abut against the upper end surface of the cardboard to be printed on the conveying assembly by moving the adjusting block in the adjusting assembly up and down, and then conveys the cardboard to be printed to the printing plate through the push plate along the length direction of the connecting plate. In this way, the upper end surface of the cardboard to be printed is ensured to be in a flush state under the downward pressure of the push plate during the conveying to the printing plate, and the push plate can block the influence of the external environment during the conveying to the printing plate, thereby ensuring the printing effect, and at the same time, because the push plate can be detachably arranged, and the clamping block can be adjusted according to the width of the cardboard, the push plate can be replaced and the distance between the clamping blocks can be adjusted according to the size of different cardboards to be printed, so that it is convenient to print different materials to be printed, and the printing efficiency is high.

[0009] Furthermore, the adjacent ends of the two U-shaped frames are fixedly connected with a connecting plate, and one end of the connecting plate is fixed to one side end of the printing plate.

[0010] The above arrangement can facilitate the placement of the printing plate above the U-shaped frame.

[0011] Furthermore, the conveying assembly includes conveying rollers, conveying shafts, gears, a first motor and a toothed belt. There are more than two conveying rollers, and there are two gears and conveying shafts. The more than two conveying rollers are rotatably connected to the conveying frame through two conveying shafts, and the two gears are fixedly connected to the circumferential surfaces of the two conveying shafts, respectively. The toothed belt is meshingly connected to the circumferential surfaces of the two gears. The first motor is fixedly connected to the conveying frame, and the output end of the first motor is fixed to one end of one of the conveying shafts.

[0012] In the above arrangement, the conveying assembly drives the conveying shaft and the gear to rotate through the operation of the first motor, and the rotation of the gear drives the toothed belt to move, thereby moving the material to be printed to the position of the printing plate.

[0013] Furthermore, the lifting components include a first sliding rod, a first block and a second cylinder. The first block and the first sliding rod are each provided with two, the two first sliding rods are both fixedly connected in the U-shaped frame, the two first sliding blocks are both fixedly connected to the surface of the placement frame, the two first sliding blocks are respectively slidably connected to the circumferential surfaces of the two first sliding rods, the first sliding blocks are fixedly connected to the surface of the placement frame, the second cylinder is fixedly connected to the conveying frame, and the extended end of the second cylinder movably passes through the lower end of the conveying frame and is fixedly connected to the upper end of the placement frame.

[0014] With the above settings, by fixing the second cylinder of the lifting component on the conveying rack, the second cylinder works to drive the placement rack to move upward, and the first slider moves on the first sliding rod to ensure the reliability of the placement rack during the moving process.

[0015] Furthermore, the adjusting component further includes a third cylinder, a second motor, a fixing plate, and a screw rod. There are two fixing plates, and both of the two fixing plates are fixedly connected to the surface of the track rack. The adjusting rack is slidably connected within the track rack. The third cylinder is fixedly connected to the upper end of the adjusting rack. The extending end of the third cylinder movably penetrates the inner wall of the adjusting rack and is fixed to the upper end of the adjusting block. The screw rod is rotatably connected within the track rack, and the screw rod is threadedly connected to the adjusting rack. The second motor is fixedly connected to the surface of one of the fixing plates, and the output end of the second motor movably penetrates the inner wall of the track rack and is fixed to one end of the screw rod.

[0016] With the above settings, the third cylinder is provided to realize the up and down movement of the adjusting rack, and the second motor drives the screw rod to rotate so that the adjusting block and the screw rod form a screw-nut structure to realize the horizontal movement of the adjusting rack.

[0017] Furthermore, the control component includes second sliding rods, a top plate, a fourth cylinder, and second sliders. There are more than two second sliding rods and second sliders. More than two second sliding rods are respectively fixedly connected to the upper ends of the two track racks. The top plate is fixedly connected to the upper ends of more than two second sliding rods. More than two second sliders are respectively slidably connected to the circumferential surfaces of more than two second sliding rods. More than two second sliders are all fixedly connected to the surface of the printer main body. The fourth cylinder is fixedly connected to the upper end of the top plate, and the extending end of the fourth cylinder movably penetrates the lower end of the top plate and is fixed to the upper end of the printer main body.

[0018] With the above settings, the fourth cylinder extends to drive the printer main body to move up and down, and the moving direction is limited during the moving process by the second sliding rods and the second sliders.

[0019] Furthermore, the placement rack includes a placement rack main body. Two clamping plates are arranged inside the placement rack main body and are movably connected to the bottom surface of the placement rack. Both sides of the surface of the placement rack are fixedly connected with a first cylinder. The extending ends of the two first cylinders both movably penetrate the placement rack, and the extending ends of the two first cylinders are both fixedly connected with clamping plates.

[0020] With the above settings, the first cylinders are arranged on the surface of the placement rack main body to drive the clamping plates to move through the first cylinders.

[0021] Furthermore, rubber layers are provided on the circumferential surfaces of more than two conveying rollers.

[0022] With the above settings, the friction force on the upper end surface of the conveying roller is increased, so that the material to be printed moves reliably on the conveying component.

[0023] Further, a concave cavity is provided at the lower end of the push plate and is arranged to match the cardboard to be printed. A rotary motor is arranged between the adjusting block and the upper end of the push plate. One end of the rotary motor is fixedly connected to the adjusting block, and the other end of the rotary motor is detachably connected to the push plate.

[0024] With the above settings, a rotary motor is connected to the upper end of the push plate, so that the push plate rotates within the area where the push plate is located and enables the cardboard to be printed to enter the concave cavity, and then the rotary motor works, so that the push plate drives the cardboard to be printed to be conveyed in the correct direction, preventing the situation where the cardboard to be printed rotates by a certain angle on the connecting plate and cannot enter the printing and pressing plate more reliably.

[0025] A working method of a printing device for an outer packaging box includes the following steps:

[0026] S1. First, place the outer packaging cardboard to be printed in the placement rack. Through the operation of two first air cylinders, drive the clamping plates connected to the extending ends of the first air cylinders to clamp the stacked outer packaging cardboard to be printed, so that both sides of the outer packaging cardboard to be printed are kept flat.

[0027] S2. Control the lifting assembly to operate. The lifting assembly drives the stacked outer packaging cardboard to be printed to move upward and makes the uppermost outer packaging cardboard to be printed contact the conveying rollers.

[0028] S3. Control the conveying assembly to operate. The output end of the first motor in the conveying assembly drives one of the conveying shafts to rotate. The two conveying shafts rotate simultaneously through a meshing transmission structure. The two conveying shafts respectively drive two or more conveying rollers to rotate. The two or more conveying rollers contact the surface of the outer packaging cardboard to be printed and move the outer packaging cardboard to be printed to the surface of the connecting plate.

[0029] S4. Control two groups of adjusting assemblies to operate. The third air cylinder in the adjusting assembly drives the adjusting block connected to the extending end of the third air cylinder to move downward. The adjusting block drives the push plate to move downward, so that the lower surface of the push plate contacts the outer packaging cardboard to be printed. Control the second motor to operate. The output end of the second motor drives the screw rod to rotate. When the screw rod rotates, it drives the adjusting frame to slide within the track frame. The adjusting frame indirectly drives the push plate to move during movement. The push plate drives the outer packaging cardboard to be printed to slide on the surface of the connecting plate and moves the outer packaging cardboard to be printed to the lower side of the printer body.

[0030] S5. The adjusting assembly resets, and the control assembly operates. The fourth air cylinder in the control assembly drives the printer body connected to the extending end of the fourth air cylinder to move downward. The printer body contacts the surface of the outer packaging cardboard to be printed and prints on the surface of the outer packaging cardboard to be printed.

[0031] S6. During printing, the adjustment assembly drives the next outer packaging material to move to one side of the printer body. After the current printing is completed, the adjustment assembly drives the unprinted outer packaging material to push out the printed outer packaging material.

[0032] In the above method, the cardboard to be printed is placed on the placement rack, and then the distance between the clamping blocks is adjusted by adjusting the distance between the clamping plates on both sides of the placement rack according to the width of different cardboards, so as to clamp different clamping plates. Then, the lifting assembly moves the cardboard clamped by the clamping blocks to the conveying assembly. Then, the adjusting block in the adjustment assembly moves up and down to drive the push plate to abut against the upper end surface of the cardboard to be printed on the conveying assembly. Then, the push plate conveys the cardboard to be printed to the printing plate along the length direction of the connecting plate. In this way, since the cardboard to be printed is ensured to be in a flat state at the upper end surface under the pressing action of the push plate during the process of being conveyed to the printing plate, and at the same time, the push plate can prevent the influence of the external environment during the process of being conveyed to the printing plate, thus ensuring the printing effect. At the same time, since the push plate is detachably arranged and the clamping blocks can be adjusted according to the width of the cardboard, it can be realized by replacing the push plate and adjusting the distance between the clamping blocks according to the size of different cardboards to be printed, which is convenient for printing different materials to be printed and has high printing efficiency. Description of the Drawings

[0033] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0034] Figure 1 is the first perspective three-dimensional view of the present invention;

[0035] Figure 2 is the second perspective three-dimensional view of the present invention;

[0036] Figure 3 is the third perspective three-dimensional view of the present invention;

[0037] Figure 4 is the cross-sectional view of the present invention;

[0038] Figure 5 is the present invention Figure 4 is the enlarged partial view of part A in;

[0039] Figure 6 is the fourth perspective three-dimensional view of the present invention;

[0040] Figure 7 is the present invention Figure 6 is the enlarged partial view of part B in;

[0041] Figure 8 is the rear view of the present invention;

[0042] Figure 9 This is the front view of the present invention;

[0043] Figure 10 This is the flowchart of the present invention.

[0044] Figure 11 This is the schematic connection diagram of the push plate and the rotating motor in the present invention.

[0045] Figure 12 This is the schematic structural diagram after the push plate rotates in the present invention.

[0046] In the figure: 1. First bracket; 101. U-shaped bracket; 102. First sliding rod; 2. Placing rack; 201. First slider; 202. Clamping plate; 203. First cylinder; 3. Conveyor rack; 301. Second cylinder; 302. Conveyor roller; 303. Conveyor shaft; 304. Gear; 305. First motor; 306. Tooth belt; 4. Second bracket; 401. Side bracket; 402. Printing plate; 5. Track rack; 501. Adjusting rack; 502. Adjusting block; 503. Push plate; 5031. Push plate body; 5310. Concave cavity; 532. Installation sleeve; 533. Rotating motor; 504. Third cylinder; 505. Second motor; 506. Fixed plate; 507. Screw; 6. Connecting plate; 7. Second sliding rod; 701. Top plate; 702. Fourth cylinder; 703. Second slider; 704. Printer body. Detailed implementation manners

[0047] Embodiment 1.

[0048] Please refer to Figures 1-9 , Figure 11 and Figure 12 , the present invention provides the following technical solutions:

[0049] A printing device for outer packaging boxes, comprising:

[0050] A first bracket 1, and two U-shaped brackets 101 are fixedly connected to the upper end of the first bracket 1;

[0051] A placing rack 2, and the placing rack 2 is arranged on the upper side of the first bracket 1 through two sets of lifting components;

[0052] A conveyor rack 3, and the conveyor rack 3 is fixedly connected to the upper surfaces of the two U-shaped brackets 101;

[0053] A conveying component, and the conveying component is arranged in the conveyor rack 3;

[0054] A second bracket 4, and the second bracket 4 is fixedly connected to one side of the surface of the first bracket 1. The upper end of the second bracket 4 is fixedly connected with a printing plate 402, and two side brackets 401 are fixedly connected to both sides of the surface of the printing plate 402;

[0055] A push plate 503, which is disposed on one side of the conveying frame 3 through two sets of adjustment components; and

[0056] The printer body 704 is disposed on the upper side of the printing plate 402 through a control component.

[0057] In a specific embodiment of the present invention, two U-shaped frames 101 are fixedly connected to the upper end of the first bracket 1. The U-shaped frame 101 serves to connect the lifting assembly. The lifting assembly is used to drive the placement rack 2 to rise and fall. The placement rack 2 is used to place stacked outer packaging materials. The materials are mostly outer packaging paperboards to be printed. When loading, the lifting assembly drives the outer packaging materials to move up through the placement rack 2. The outer packaging materials located on the uppermost side contact the conveying assembly. The conveying assembly conveys the stacked outer packaging materials one by one to the surface of the connecting plate 6. In this process, the outer packaging materials are gradually conveyed and the lifting assembly continuously drives the placement rack 2 to move up. The outer packaging material on the top is always in contact with the conveying assembly. The second bracket 4 supports the printing plate 402. The side brackets 401 installed on both sides of the printing plate 402 install the track frame 5. This solution uses a lifting assembly to drive the placement frame 2 to cooperate with the conveying assembly to continuously convey the unprinted outer packaging material. Compared with the traditional solution that uses multiple rollers to convey the outer packaging materials one by one, the use of conveying rollers is reduced, and the problem that the conveying rollers cannot contact the outer packaging materials is effectively avoided. The push plate 503 is controlled by two groups of adjustment groups. The push plate 503 drives the outer packaging material located on the upper surface of the connecting plate 6 to move to the lower side of the printing assembly for printing one by one.

[0058] For details, please refer to Figures 1-10 The adjacent ends of the two U-shaped frames 101 are fixedly connected with a connecting plate 6 , and one end of the connecting plate 6 is fixed to one side end of the printing plate 402 .

[0059] In this embodiment, the upper surface of the connecting plate 6 is smooth, so that the outer packaging material can slide on the surface easily.

[0060] For details, please refer to Figures 1-10 The conveying assembly includes a conveying roller 302, a conveying shaft 303, a gear 304, a first motor 305 and a toothed belt 306. There are multiple conveying rollers 302, and there are two gears 304 and two conveying shafts 303. The multiple conveying rollers 302 are rotatably connected to the conveying frame 3 through the two conveying shafts 303 respectively. The two gears 304 are fixedly connected to the circumferential surfaces of the two conveying shafts 303 respectively. The toothed belt 306 is meshingly connected to the circumferential surfaces of the two gears 304. The first motor 305 is fixedly connected to the conveying frame 3, and the output end of the first motor 305 is fixed to one end of one of the conveying shafts 303.

[0061] In this embodiment: the first motor 305 in the conveying assembly drives a conveying shaft 303 connected to its output end to rotate when in operation, and the circumferential surfaces of the two conveying shafts 303 are fixed with gears 304, and the circumferential surfaces of the two gears 304 are meshingly connected with toothed belts 306, and the meshing transmission structure makes the two conveying shafts 303 rotate simultaneously, and the conveying shafts 303 drive the conveying rollers 302 to rotate when rotating, and the outer packaging materials contacted by the conveying rollers 302 move to the surface of the connecting plate 6. The circumferential surfaces of the plurality of conveying rollers 302 are all provided with a rubber layer. The rubber layer is used to increase the friction between the outer packaging material surface and the outer packaging material, thereby improving the stability of the outer packaging material during transportation.

[0062] For details, please refer to Figures 1-10 Each lifting assembly includes a first slide bar 102, a first slider 201 and a second cylinder 301. Two first sliders 201 and two first slide bars 102 are provided. The two first slide bars 102 are fixedly connected to the U-shaped frame 101. The two first sliders 201 are fixedly connected to the surface of the placement rack 2. The two first sliders 201 are respectively slidably connected to the circumferential surfaces of the two first slide bars 102 and fixedly connected to the surface of the placement rack 2. The second cylinder 301 is fixedly connected to the extended end of the conveying rack 3. The extended end of the second cylinder 301 movably passes through the lower end of the conveying rack 3 and is fixedly connected to the surface of the placement rack 2.

[0063] In this embodiment: the second cylinder 301 in the lifting assembly drives the first slider 201 to move during operation, the first slider 201 drives the placement rack 2 to move, the first slider 201 slides on the circumferential surface of the first slide bar 102, the first slider 201 is fixedly connected to the surface of the placement rack 2, the first slide bar 102 and the first slider 201 cooperate to limit the placement rack 2, thereby improving the stability of the placement rack 2 sliding up and down.

[0064] For details, please refer to Figures 1-10, each set of adjusting components includes a track frame 5, an adjusting frame 501, an adjusting block 502, a push plate 503, a third cylinder 504, a second motor 505, a fixing plate 506, and a screw 507. There are two fixing plates 506. The track frame 5 is fixedly connected to the surfaces of the U-shaped frame 101 and the side bracket 401. Both fixing plates 506 are fixedly connected to the surface of the track frame 5. The adjusting frame 501 is slidably connected inside the track frame 5. The adjusting block 502 is slidably connected inside the adjusting frame 501. The adjusting block 502 is fixed to the surface of the push plate 503. The third cylinder 504 is fixedly connected to the upper end of the adjusting frame 501. The extending end of the third cylinder 504 movably penetrates the inner wall of the adjusting frame 501 and is fixed to the upper end of the adjusting block 502. The screw 507 is rotatably connected inside the track frame 5. The screw 507 is threadedly connected to the adjusting frame 501. The second motor 505 is fixedly connected to the surface of one of the fixing plates 506. The output end of the second motor 505 movably penetrates the inner wall of the track frame 5 and is fixed to one end of the screw 507.

[0065] In this embodiment: The fixing plate 506 in the adjusting component functions to install the second motor 505. When the second motor 505 operates, it drives the screw 507 connected to its output end to rotate. The screw 507 is in threaded cooperation with the adjusting frame 501. By the rotation of the screw 507, the adjusting frame 501 slides inside the track frame 5. The adjusting block 502 slidably connected inside the adjusting frame 501 is controlled by the third cylinder 504. The extending end of the third cylinder 504 drives the adjusting block 502 to slide inside the adjusting frame 501. The adjusting block 502 is detachably connected to the push plate 503. When the adjusting block 502 moves, it drives the push plate 503 to move, controlling whether the push plate 503 contacts the packaging material.

[0066] As Figures 11-12 shown, the push plate 503 includes a push plate main body 5031. A concave cavity 5310 that is recessed upward is provided on the lower end surface of the push plate main body 5031. The concave cavity 5310 is matched with the cardboard of the packaging box to be printed. An installation sleeve 532 is provided at the upper end of the push plate 503. A rotary motor 533 is provided between the adjusting block 502 and the push plate 503. The output end of the rotary motor enters the installation sleeve 532 and is detachably connected by setting a screw hole on the side wall of the output end of the rotary motor and setting a bolt in the screw hole. The upper end of the rotary motor is fixed to the adjusting block. The output end of the rotary motor 533 causes the push plate 503 to rotate in the plane where the lower end surface of the push plate 503 is located. A camera (not shown in the figure) is provided on the adjusting frame. When the points at the four corner positions of the cardboard of the packaging box to be printed captured by the camera do not coincide with the points at the four corner positions of the push plate, as Figure 12As shown, by controlling the rotation of the rotary motor to make the cardboard box to be printed coincide with the four corner positions of the push plate, the cardboard box to be printed enters the depression 5310. Then, the push plate is rotated in the opposite direction by the just rotated angle so that the push plate is perpendicular to the horizontal direction of the fixed plate, and the cardboard box to be printed that is not perpendicular to the horizontal direction of the fixed plate can be set straight.

[0067] Specifically, please refer to Figures 1-10 , the control assembly includes a second slide bar 7, a top plate 701, a fourth cylinder 702 and a second slider 703. There are multiple second slide bars 7 and second sliders 703. In this embodiment, there are four second slide bars 7 and four second sliders 703. The multiple second slide bars 7 are respectively fixedly connected to the upper ends of the two track frames 5. The top plate 701 is fixedly connected to the upper ends of the multiple second slide bars 7. The multiple second sliders 7 are respectively slidably connected to the circumferential surfaces of the multiple second slide bars 7. The multiple second sliders 7 are all fixed to the surface of the printer main body 704. The fourth cylinder 702 is fixedly connected to the upper end of the top plate 701. The extending end of the fourth cylinder 702 movably penetrates the lower end of the top plate 701 and is fixed to the upper end of the printer main body 704.

[0068] In this embodiment: the second slide bar 7 and the second slider 703 in the control assembly are used to limit the printer main body 704 and improve the stability of the up and down sliding of the printer main body 704. When the fourth cylinder 702 operates, it drives the printer main body 704 connected to its extending end to move up and down. The printer main body 704 can be a silk screen printer main body.

[0069] As Figure 1 shown, both sides of the surface of the placement rack 2 are fixedly connected with a first cylinder 203. The extending ends of the two first cylinders 203 both movably penetrate the placement rack 2. The extending ends of the two first cylinders 203 are both fixedly connected with a clamping plate 202. The clamping plate 202 is located inside the placement rack 2 and moves along the width direction of the placement rack inside the placement rack 2. Since the clamping plate 202 is fixed inside the placement rack 2, when the placement rack 2 moves up and down under the action of the lifting assembly, the clamping plate 202 can move together.

[0070] In this embodiment, when the first cylinder 203 operates, it drives the clamping plate 202 to move. The two clamping plates 202 cooperate to clamp the stacked outer packaging materials, so that both sides of the outer packaging materials are kept flat. When transporting the outer packaging materials, the two clamping plates 202 do not contact the surface of the outer packaging materials. Rubber plates are fixedly connected to the mutually approaching surfaces of the two clamping plates 202. By providing the rubber plates, when the two clamping plates 202 clamp the outer packaging materials, the surface of the outer packaging materials is prevented from being damaged.

[0071] Working principle and usage process of the present invention: When this device is in use, first place the outer packaging cardboard to be printed in the placement rack 2. Through the operation of two first cylinders 203, drive the clamping plates 202 connected to the extending ends of the first cylinders 203 to clamp the stacked cardboard, keeping both sides of the cardboard flat; control the lifting assembly to operate. The lifting assembly drives the stacked outer packaging cardboard to move upward, and makes the uppermost outer packaging material contact the conveying rollers 302; control the conveying assembly to operate. The output end of the first motor 305 in the conveying assembly drives one of the conveying shafts 303 to rotate. The two conveying shafts 303 rotate simultaneously through a meshing transmission structure. The two conveying shafts 303 respectively drive a plurality of conveying rollers 302 to rotate. The plurality of conveying rollers 302 contact the surface of the outer packaging material, moving the outer packaging material to the surface of the connecting plate 6; control the two groups of adjusting assemblies to operate. The third cylinder 504 in the adjusting assembly drives the adjusting block 502 connected to its extending end to move downward. The adjusting block 502 drives the pushing plate 503 to move downward, making the lower surface of the pushing plate 503 contact the outer packaging material. Control the second motor 505 to operate. The output end of the second motor 505 drives the screw rod 507 to rotate. When the screw rod 507 rotates, it drives the adjusting frame 501 to slide in the track frame 5. The adjusting frame 501 indirectly drives the pushing plate 503 to move during movement. The pushing plate 503 drives the outer packaging material to slide on the surface of the connecting plate 6, moving the outer packaging material to the lower side of the printer main body 704; control the control assembly to operate. The fourth cylinder 702 in the control assembly drives the printer main body 704 connected to its extending end to move downward. The printer main body 704 contacts the surface of the outer packaging material and prints on the surface of the outer packaging material; during printing, the adjusting assembly resets and drives the next outer packaging material to move to one side of the printer main body 704. When this printing is completed, the adjusting assembly drives the unprinted outer packaging material to push out the already printed outer packaging material from one side of the already printed outer packaging material, and outputs the device; by using this device, the lifting assembly drives the placement rack 2 to cooperate with the conveying assembly to continuously convey the unprinted outer packaging materials. Compared with the traditional solution of using multiple rollers to convey the outer packaging materials one by one, the use of conveying rollers is reduced, effectively avoiding the problem that the conveying rollers cannot contact the outer packaging materials.

[0072] Embodiment 2.

[0073] As Figure 10 shown, a working method of a printing device for outer packaging boxes includes the following steps:

[0074] S1. First, place the outer packaging cardboard to be printed in the placement rack 2. Through the operation of two first cylinders 203, drive the clamping plates 202 connected to the extending ends of the first cylinders 203 to clamp the stacked outer packaging cardboard to be printed, keeping both sides of the outer packaging cardboard to be printed flat;

[0075] S2. Control the lifting assembly to operate. The lifting assembly drives the stacked outer packaging cardboard to be printed to move upward, and makes the uppermost outer packaging cardboard to be printed contact the conveying roller 302; and the upper end surface of the toothed belt 306 is flush with the upper end surface of the connecting plate 6.

[0076] S3. Control the conveying assembly to operate. The output end of the first motor 305 in the conveying assembly drives one of the conveying shafts 303 to rotate. The two conveying shafts 303 rotate simultaneously through the meshing transmission structure. The two conveying shafts 303 respectively drive more than two conveying rollers 302 to rotate. The more than two conveying rollers 302 contact the surface of the outer packaging cardboard to be printed, and move the outer packaging cardboard to be printed to the surface of the connecting plate 6.

[0077] S4. Control the two groups of adjusting assemblies to operate. The third cylinder 504 in the adjusting assembly drives the adjusting block 502 connected to the extending end of the third cylinder 504 to move downward. The adjusting block 502 drives the push plate 503 to move downward, so that the lower surface of the push plate 503 contacts the outer packaging cardboard to be printed. Control the second motor 505 to operate. The output end of the second motor 505 drives the screw rod 507 to rotate. When the screw rod 507 rotates, it drives the adjusting frame to slide in the track frame 5. The adjusting frame 501 indirectly drives the push plate to move during movement. The push plate drives the outer packaging cardboard to be printed to slide on the surface of the connecting plate, so that the outer packaging cardboard to be printed moves to the lower side of the printer body.

[0078] S5. The adjusting assembly resets, and the control assembly operates. The fourth cylinder 702 in the control assembly drives the printer body connected to the extending end of the fourth cylinder 702 to move downward. The printer body 704 contacts the surface of the outer packaging cardboard to be printed, and prints on the surface of the outer packaging cardboard to be printed.

[0079] S6. During printing, the adjusting assembly drives the next outer packaging material to move to one side of the printer body 704. When the printing of this time is completed, the adjusting assembly drives the unprinted outer packaging material to push out the printed outer packaging material.

Claims

1. A printing device for an outer packaging box, characterized in that: A first bracket, a placement rack, a conveying rack, a conveying assembly, a second bracket, a push plate, and a printer body, wherein the upper end of the first bracket is fixedly connected to two U-shaped racks; the placement rack is arranged on one side of the first bracket through two sets of lifting assemblies; clamping plates are arranged on both sides of the placement rack, and the clamping plates move along the width direction of the placement rack, and the conveying rack is fixedly connected to the upper surfaces of the two U-shaped racks; the conveying assembly is arranged in the conveying rack; the second bracket is fixedly connected to the other side of the surface of the first bracket, and the upper end of the second bracket is fixedly connected to a printing plate, and both sides of the surface of the printing plate are fixedly connected to two side brackets; a connecting plate is fixedly connected to the U-shaped frame, and the connecting plate is located between the conveying assembly and the printing plate, and the upper surface of the connecting plate is smoothly arranged, and the printer body is arranged on the upper side of the printing plate through the control assembly; The push plate is arranged on the conveying frame through two groups of adjustment components; the adjustment components include a track frame, an adjustment frame, and an adjustment block, the track frame is fixedly connected to the surfaces of the U-shaped frame and the side bracket, the adjustment frame is slidably connected in the track frame, the adjustment block is slidably connected in the adjustment frame, the lower end of the adjustment block is detachably connected to the upper surface of the push plate, the adjustment block moves along the inner side wall of the adjustment frame, the adjustment frame moves along the length direction of the connecting plate, the cross-sectional area of ​​the push plate is larger than the cross-sectional area of ​​the paperboard, and the cross-sectional area of ​​the printing plate is matched with the cross-sectional area of ​​the paperboard; the lower end of the push plate is provided with a recessed cavity set upward, the recessed cavity is matched with the paperboard to be printed, a rotating motor is provided between the adjusting block and the upper end of the push plate, one end of the rotating motor is fixedly connected to the adjustment block, and the other end of the rotating motor is detachably connected to the push plate.

2. The printing device for an outer packaging box according to claim 1, characterized in that: A connecting plate is fixedly connected to the adjacent ends of the two U-shaped frames, and one end of the connecting plate is fixed to one side end of the printing plate.

3. The printing device for an outer packaging box according to claim 1, characterized in that: The conveying assembly includes conveying rollers, conveying shafts, gears, a first motor and a toothed belt. There are more than two conveying rollers, and there are two gears and conveying shafts. The more than two conveying rollers are rotatably connected to the conveying frame through two conveying shafts, respectively. The two gears are fixedly connected to the circumferential surfaces of the two conveying shafts, respectively. The toothed belt is meshingly connected to the circumferential surfaces of the two gears. The first motor is fixedly connected to the conveying frame, and the output end of the first motor is fixed to one end of one of the conveying shafts.

4. The printing device for an outer packaging box according to claim 1, characterized in that: The lifting components include a first sliding rod, a first block and a second cylinder. The first blocks and the first sliding rod are each provided with two, the two first sliding rods are both fixedly connected in the U-shaped frame, the two first sliders are both fixedly connected to the surface of the placement frame, the two first sliders are respectively slidably connected to the circumferential surfaces of the two first sliding rods, the first block is fixedly connected to the surface of the placement frame, the second cylinder is fixedly connected to the conveying frame, and the extended end of the second cylinder movably passes through the lower end of the conveying frame and is fixedly connected to the upper end of the placement frame.

5. The printing device for an outer packaging box according to claim 1, characterized in that: The adjusting assembly also includes a third cylinder, a second motor, a fixed plate, and a screw. Two fixed plates are provided, and both of the fixed plates are fixedly connected to the surface of the track frame. The adjusting frame is slidably connected to the track frame. The third cylinder is fixedly connected to the upper end of the adjusting frame. The extended end of the third cylinder movably penetrates the inner wall of the adjusting frame and is fixed to the upper end of the adjusting block. The screw is rotatably connected to the track frame. The screw is threadedly connected to the adjusting frame. The second motor is fixedly connected to the surface of one of the fixed plates, and the output end of the second motor movably penetrates the inner wall of the track frame and is fixed to one end of the screw.

6. The printing device for an outer packaging box according to claim 1, characterized in that: The control component includes a second slide bar, a top plate, a fourth cylinder and a second slider. The second slide bar and the second slider are each provided with more than two, and the more than two second slide bars are respectively fixedly connected to the upper ends of the two track frames, the top plate is fixedly connected to the upper ends of the more than two second slide bars, and the more than two second sliders are respectively slidably connected to the circumferential surfaces of the more than two second slide bars, and the more than two second sliders are fixed to the surface of the printer body, the fourth cylinder is fixedly connected to the upper end of the top plate, and the extended end of the fourth cylinder movably passes through the lower end of the top plate and is fixed to the upper end of the printer body.

7. The printing device for an outer packaging box according to claim 1, characterized in that: The placement rack includes a placement rack body, two clamps are arranged on the inner side of the placement rack body and movably connected on the bottom surface of the placement rack, both sides of the surface of the placement rack are fixedly connected with first cylinders, the extended ends of the two first cylinders are movably inserted through the placement rack, and the extended ends of the two first cylinders are fixedly connected with clamps.

8. The printing device for an outer packaging box according to claim 3, characterized in that: The circumferential surfaces of the two or more conveying rollers are both provided with a rubber layer.

9. A method for operating an outer packaging box printing device, using the outer packaging box printing device according to any one of claims 1 to 8, characterized in that: The steps include: S1. First, the outer packaging cardboard to be printed is placed in the placement rack. Through the operation of the two first cylinders, the clamping plates connected to the extended ends of the first cylinders are driven to clamp the stacked outer packaging cardboard to be printed, so that both sides of the outer packaging cardboard to be printed are kept flat; S2, controlling the operation of the lifting assembly, so that the lifting assembly drives the stacked outer packaging paperboards to be printed to move upward, and makes the uppermost outer packaging paperboard to be printed contact with the conveying roller; S3, controlling the conveying assembly to operate, the output end of the first motor in the conveying assembly drives one of the conveying shafts to rotate, the two conveying shafts rotate simultaneously through the meshing transmission structure, the two conveying shafts respectively drive two or more conveying rollers to rotate, the two or more conveying rollers contact the surface of the outer packaging paperboard to be printed, and move the outer packaging paperboard to be printed to the surface of the connecting plate; S4, controlling the operation of the two adjustment components, the third cylinder in the adjustment component drives the adjustment block connected to the extended end of the third cylinder to move downward, the adjustment block drives the push plate to move downward, so that the lower surface of the push plate contacts the outer packaging paperboard to be printed, and controlling the operation of the second motor, the output end of the second motor drives the screw to rotate, the screw drives the adjustment frame to slide in the track frame when rotating, the adjustment frame indirectly drives the push plate to move when moving, the push plate drives the outer packaging paperboard to be printed to slide on the surface of the connecting plate, so that the outer packaging paperboard to be printed moves to the lower side of the printer body; S5, the adjustment component is reset, the control component is operated, the fourth cylinder in the control component drives the printer body connected to the extended end of the fourth cylinder to move downward, the printer body contacts the surface of the outer packaging paperboard to be printed, and prints on the surface of the outer packaging paperboard to be printed; S6. During printing, the adjusting component drives the next outer packaging material to move to one side of the printer body. When the printing is completed, the adjusting component drives the unprinted outer packaging material to push out the printed outer packaging material.

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