Printing and drying device for packaging box

Abstract

The invention discloses a printing and drying device for a packaging box, and relates to the technical field of packaging and printing. A printing equipment body is provided with a base, the base is provided with a discharging opening, the periphery of the base is provided with a printing device and a drying box, the printing device and the drying box are arranged at the adjacent positions, and a rotating mechanism is arranged above the base; a plurality of clamping assemblies are arranged on the circumference of the rotating mechanism, moving blocks are arranged in the circumferential directions of the clamping assemblies, one ends of the moving blocks are fixedly connected with control springs, and the other sides of the control springs are connected with clamping plates; the driving mechanism is arranged on one side of the rotating mechanism, the moving block is driven by the driving mechanism to synchronously move, and the moving block drives the clamping plate to adaptively clamp the packaging box through the control spring. And therefore, the printing quality and the production efficiency of the packaging box are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of packaging and printing, and more particularly to a printing and drying device for packaging boxes. Background Art

[0002] Printing is a process of transferring images or texts to a medium. In order to ensure the beauty and anti-counterfeiting effect of the packaging box, some manufacturers will print unique patterns and anti-counterfeiting logos on the packaging box. There are many ways to print packaging boxes, such as screen printing, letterpress printing, gravure printing, etc. Compared with other printing technologies, screen printing technology can achieve some special decorative effects when printing packaging boxes, such as raised, glossy and matte feeling, etc. Therefore, screen printing is widely used for packaging box printing.

[0003] When the screen printing machine prints on the packaging box, the operator first places the packaging box in the designated position, transports the packaging box to the bottom of the screen through the transmission mechanism, moves the screen downward through the control mechanism, and then transfers the ink to the surface of the packaging box through the opening of the screen through the scraper, thereby forming the required printing pattern. After the pattern is formed, the packaging box is transported to the bottom of the drying box through the transmission mechanism for drying, which promotes the rapid drying and curing of the ink or coating to ensure the printing quality of the packaging box. When facing packaging boxes of different shapes, since the packaging boxes are not fixed, some inks are more viscous during the printing process. When the screen printing is completed, the packaging box moves up and down. It will stick to the screen plate, and after a period of time, it will fall onto the transmission mechanism due to its own weight, resulting in the phenomenon of stacking of packaging boxes, making it impossible to print subsequent packaging boxes, or incomplete packaging stacking resulting in incomplete printing. For this reason, the prior art proposes a pneumatic clamping system, which clamps the packaging box through a pneumatic clamping system to ensure that the packaging box will not adhere to the surface of the screen plate when the screen plate moves upward during the printing process due to the high viscosity of the ink, resulting in subsequent inability to print. However, the cost of the pneumatic clamping system is relatively high. At the same time, if the pneumatic clamping system fails, the maintenance procedure is relatively complicated, and the machine must be shut down for maintenance, which affects the overall production efficiency of the device.

[0004] In view of the above situation, the present invention designs a printing and drying device for packaging boxes to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a printing and drying device for packaging boxes, which solves the problem that when printing packaging boxes of different shapes, the clamping system malfunctions and the packaging boxes cannot be clamped, resulting in stacking of packaging boxes, thereby reducing the printing quality and production efficiency of the packaging boxes.

[0006] To achieve the above object, the present invention provides the following technical solutions: A printing and drying device for a packaging box comprises a printing device body, which is used for printing and drying patterns on the surface of the packaging box. The printing device body is provided with a base, and a discharge port is opened on the base. A printing device and a drying box are respectively arranged around the base, and the printing device and the drying box are arranged at adjacent positions. A rotating mechanism is arranged above the base, which is used to rotate the packaging box and print and dry the packaging box. A plurality of clamping components are arranged on the circumference of the rotating mechanism, and the clamping components include a driving mechanism, a moving block, a control spring and a clamping plate; the moving block is arranged in the circumferential direction of the clamping component, and a plurality of clamping components are arranged, one end of the moving block is fixedly connected to the control spring, and the other side of the control spring is connected to the clamping plate; the driving mechanism is arranged on one side of the rotating mechanism, and the driving mechanism is connected to the moving block; the moving block is driven to move synchronously by the driving mechanism, and the moving block drives the clamping plate to adaptively clamp the packaging box through the control spring.

[0007] Preferably, the rotating mechanism includes a rotating motor, a rotating platform, a support column, a placement plate, a discharge hole and a discharge trough; the support column is fixedly installed above the base, and a rotating platform is rotatably arranged above the support column; the rotating motor is installed above the base, and the rotating motor is arranged inside the support column, and the output end of the rotating motor is arranged perpendicular to the rotating platform; a plurality of placement plates are arranged at the circumferential position of the rotating platform, and a plurality of the placement plates are provided with clamping components, and a discharge hole and a discharge trough are opened on the placement plates, the discharge hole is connected with the discharge trough, and the discharge trough has a slope, and the slope of the discharge trough is consistent with the inclination of the discharge port.

[0008] Preferably, the driving mechanism includes a driving motor, a threaded rod, a load-bearing plate, a rotating plate and a V-shaped rod; the driving motor is arranged on the placing plate, and the output end of the driving motor is connected to the threaded rod, and a moving block is arranged on the threaded rod, and the threaded rod causes the moving block on the threaded rod to move through the rotation of the driving motor; the load-bearing plate is arranged above the placing plate, and the load-bearing plate is in the shape of an "I" character, a blanking hole is opened at the center position of the load-bearing plate, and a plurality of moving grooves are opened in the circumferential direction of the blanking hole of the load-bearing plate, and the moving block reciprocates in the moving groove; the rotating plate is rotatably installed at the circumference of the load-bearing plate, and the V-shaped rod is installed under the rotating plate, one end of the V-shaped rod is connected to the rotating plate, and the other end is connected to the moving block.

[0009] Preferably, the telescopic assembly includes a moving column, a compression spring and a supporting mechanism; the moving column is installed under the load-bearing plate, and the moving column is in contact with the blanking hole, the moving column is connected to the load-bearing plate through a compression spring, and the cross-sectional shape of the moving column is a stepped shape; the supporting mechanism is arranged above the moving column, the supporting mechanism is provided with multiple groups, and the supporting mechanism is arranged at the inner circumference of the blanking hole, and in the initial state, the upper surface of the moving column is connected to the supporting mechanism.

[0010] Preferably, the supporting mechanism comprises a lifting plate, a connecting spring and a supporting plate; the lifting plate is arranged above the moving column, and the lifting plate is slidably connected to a fixed plate provided at the front end of the moving block, one side of the lifting plate is an arc, and in an initial state, the lower surface of the lifting plate is in contact with the upper surface of the moving column, and the minimum diameter of the moving column is smaller than the arc diameter of the lifting plate; an installation groove is provided on the lifting plate, a connecting spring is provided in the installation groove, a plurality of connecting springs are provided, one end of the connecting spring is fixedly connected to the lifting plate, and the other end is fixedly connected to the supporting plate.

[0011] Preferably, a slider is provided at the arc end of the lifting plate, and a sliding groove is provided on the fixed plate. When the movable column moves upward, the slider reciprocates in the sliding groove.

[0012] Preferably, a slope is provided at one end of the support plate, and when the moving block moves to drop materials, the support plate moves in conjunction with the load-bearing plate, and the joint between the load-bearing plate and the support plate is an inclined surface with an inclination angle consistent with the slope.

[0013] Preferably, the support plate is flush with the upper surface of the load-bearing plate, the support plate is arc-shaped, and the downward movement distance of the load-bearing plate is consistent with the upward movement distance of the support plate.

[0014] Preferably, when the moving block is in the middle position of the moving groove, the moving block drives the support plate to extend a portion of the material hole; when the moving block is at the edge of the moving groove, the moving block drives the support plate not to extend out of the material hole; when the moving block is in the moving groove close to the material hole, the moving block drives the support plate to completely extend out of the material hole.

[0015] Preferably, the sensor is fixedly mounted on the support plate, and a plurality of sensors are provided. The sensors are used to detect the relative position of the support plate, and use the sensing condition as a signal to start and stop the drive motor.

[0016] Beneficial effects of the present invention: The present invention provides a printing and drying device for a packaging box. The device drives a moving block to reciprocate through a driving mechanism, so that the moving block squeezes a control spring to drive a clamping plate to fit the edge of the packaging box, ensuring that the packaging box will not deviate during the printing process. At the same time, it can ensure that the packaging box can be evenly stressed on all sides during the clamping process to avoid uneven stress that causes damage to the packaging box, thereby ensuring the printing quality and printing efficiency of the packaging box.

[0017] 2. The present invention provides a printing and drying device for packaging boxes. The device cooperates with a clamping component and a telescopic component to ensure that the packaging boxes are evenly stressed during the printing process, thereby avoiding the problem of unclear patterns or texts due to uneven stress on the packaging boxes during printing, thereby improving the printing quality of the packaging boxes.

[0018] 3. The present invention provides a printing and drying device for packaging boxes. The device cooperates with a drop hole and a discharge chute. After printing is completed, the packaging box slides along the surface of the discharge port through its own gravity, thereby realizing automatic unloading, thereby reducing the workload of operators and improving printing production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A; Figure 3 It is a schematic diagram of the overall structure of the rotating mechanism of the present invention in conjunction with the clamping assembly; Figure 4 It is a schematic diagram of the overall structure of the clamping assembly of the present invention; Figure 5 A bottom view of the clamping assembly of the present invention; Figure 6 is a cross-sectional view of the clamping assembly of the present invention; Figure 7 For the present invention Figure 6 A partial enlarged view of point B; Figure 8 It is a schematic diagram of the overall structure of the fixed plate and the lifting plate of the present invention; Reference numerals: 1. Printing equipment body; 11. Base; 111. Discharge port; 12. Rotating mechanism; 121. Rotating motor; 122. Rotating platform; 123. Support column; 124. Placement plate; 125. Discharge hole; 126. Discharge chute; 2. Printing device; 3. Drying box; 4. Clamping assembly; 41. Driving mechanism; 411. Driving motor; 412. Threaded rod; 413. Load-bearing plate; 4131. Moving groove; 4132. Conical surface; 4133. Blanking hole; 414. Rotating plate; 415. V-shaped rod; 42. Moving block; 421. Fixed plate; 422. Sliding groove; 43. Control spring; 44. Clamping plate; 5. Telescopic assembly; 51. Moving column; 52. Compression spring; 53. Support mechanism; 531. Lifting plate; 532. Mounting slot; 533. Sliding block; 534. Connecting spring; 535. Support plate; 5351. Inclined surface; 6. Sensor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0021] refer to Figure 1-Figure 2 As shown, a printing and drying device for packaging boxes comprises a printing device body 1, which is used for printing and drying patterns on the surface of packaging boxes. The printing device body 1 is provided with a base 11, and a discharge port 111 is provided on the base 11. A printing device 2 and a drying box 3 are respectively provided around the base 11, and the printing device 2 and the drying box 3 are arranged at adjacent positions. A rotating mechanism 12 is provided above the base 11, which is used for rotating the packaging box to print and dry the packaging box. A plurality of clamping components 4 are provided on the circumference of the rotating mechanism 12, and the clamping components 4 include a driving The driving mechanism 41, the moving block 42, the control spring 43 and the clamping plate 44; the moving block 42 is arranged in the circumferential direction of the clamping assembly 4, and the clamping assembly 4 is provided with multiple ones, one end of the moving block 42 is fixedly connected with the control spring 43, and the other side of the control spring 43 is connected with the clamping plate 44; the driving mechanism 41 is arranged on one side of the rotating mechanism 12, and the driving mechanism 41 is connected to the moving block 42; the moving block 42 is driven to move synchronously by the driving mechanism 41, and the moving block 42 drives the clamping plate 44 to adaptively clamp the packaging box through the control spring 43.

[0022] During the working process, the operator first places the packaging box on the clamping assembly, and then starts the driving mechanism 41 to drive the moving block 42 to move. Since there are multiple moving blocks 42, when any moving block 42 reciprocates, the moving block 42 can realize the synchronous movement of multiple moving blocks 42 through the driving mechanism 41, so that the packaging box can be evenly stressed all around, avoiding the phenomenon that the packaging box is offset and the position is inconsistent due to the force on one side, thereby avoiding the phenomenon that the pattern or text position is inconsistent with the preset position during the printing process and causing waste. The moving block 42 drives the clamping plate 44 through the control spring 43 to clamp packaging boxes of different shapes during the clamping process. Since the moving blocks 42 move synchronously, when any moving block 42 drives the clamping plate 44 to contact the packaging box, the other clamping plates 44 are in a state of continuing to move. By squeezing the control spring 43, it can be ensured that the clamping plate 44 in contact with the packaging box will not continue to apply pressure to the packaging box, thereby preventing the packaging box from being damaged due to the pressure of the clamping plate 44 during the clamping process. For example, after the packaging box is clamped, the rotating platform 122 is started, and the rotating platform 122 drives the clamping component 4 to move, so that the packaging box is located under the printing device 2, and the printing device 2 drives the screen plate to move downward to print on the surface of the packaging box. After the printing is completed, since the ink is not completely dry, the rotating mechanism 12 continues to rotate and drives the clamping component 4 to be located under the drying box 3, and the ink on the surface of the packaging box is quickly dried by the drying box 3 to avoid the subsequent packaging operation from affecting the pattern on the packaging box, thereby reducing the printing quality of the packaging box. After the packaging box is dried, the rotating mechanism 12 continues to rotate, so that the clamping component 4 is located at the discharge port 111. At this time, the clamping component 4 drives the moving block 42 to move to cancel the clamping of the packaging box. Due to its own weight, the packaging box slides through the surface of the discharge port 111, thereby realizing automatic unloading of the packaging box, thereby reducing the labor of the operator and improving work efficiency. Since multiple clamping components 4 are installed above the rotating mechanism 12, multi-platform work can be realized, thereby improving the printing production efficiency of the device for the packaging box.

[0023] like Figure 1 , Figure 3As shown, the rotating mechanism 12 includes a rotating motor 121, a rotating platform 122, a supporting column 123, a placing plate 124, a discharge hole 125 and a discharge trough 126; the supporting column 123 is fixedly installed above the base 11, and a rotating platform 122 is rotatably arranged above the supporting column 123; the rotating motor 121 is installed above the base 11, and the rotating motor 121 is arranged inside the supporting column 123, and the output end of the rotating motor 121 is arranged perpendicular to the rotating platform 122; a plurality of placing plates 124 are arranged at the circumferential position of the rotating platform 122, and a clamping assembly 4 is arranged on the plurality of placing plates 124, and a discharge hole 125 and a discharge trough 126 are opened on the placing plates 124, the discharge hole 125 is connected with the discharge trough 126, and the discharge trough 126 has a slope, and the slope of the discharge trough 126 is consistent with the inclination of the discharge port 111.

[0024] During the working process, after the operator completes clamping the packaging box through the clamping component 4, the rotating motor 121 is started, and the rotating motor 121 rotates, driving the rotating platform 122 installed on its output end to rotate, and the support column 123 is rotatably connected to the rotating platform 122, so that the rotating platform 122 can move smoothly during the movement, and the placement plate 124 is fixedly set on the rotating platform 122, so that it can move synchronously with the rotating platform 122. After the rotating platform 122 rotates through the packaging box on the clamping component 4 for printing and drying, the clamping component 4 cancels the clamping of the packaging box, and the packaging box falls along the discharge port to the discharge chute 126 due to its own gravity. The discharge chute 126 has its own slope, and the packaging box slides along the discharge chute 126 due to gravity, so that the packaging box falls through the discharge port 111 opened on the base 11 to the collection box arranged below the base 11.

[0025] like Figure 3-Figure 5 As shown, the driving mechanism 41 includes a driving motor 411, a threaded rod 412, a bearing plate 413, a rotating plate 414 and a V-shaped rod 415; the driving motor 411 is arranged on the placement plate 124, and the output end of the driving motor 411 is connected to the threaded rod 412, and the threaded rod 412 is provided with a moving block 42, and the threaded rod 412 moves the moving block 42 on the threaded rod 412 through the rotation of the driving motor 411; the bearing plate 413 is arranged above the placement plate 124, The load-bearing plate 413 is in the shape of an "I" character, a blanking hole 4133 is provided at the center of the load-bearing plate 413, and a plurality of movable grooves 4131 are provided in the circumferential direction of the blanking hole 4133 of the load-bearing plate 413, and the movable block 42 reciprocates in the movable groove 4131; the rotating plate 414 is rotatably installed at the circumference of the load-bearing plate 413, and the V-shaped rod 415 is installed under the rotating plate 414, one end of the V-shaped rod 415 is connected to the rotating plate 414, and the other end is connected to the movable block 42.

[0026] During the working process, the packaging box is first placed on the load-bearing plate 413, and then the driving motor 411 is started. The rotation of the driving motor 411 drives the coaxially fixed threaded rod 412 to rotate, and the rotation of the threaded rod 412 drives the moving block 42 to move along the direction of the threaded rod 412. When the driving motor 411 rotates forward, the threaded rod 412 drives the moving block 42 to move toward the blanking hole 4133. When the driving motor 411 rotates reversely, the threaded rod 412 drives the moving block 42 to move in the opposite direction of the blanking hole 4133, so that the moving block 42 moves left and right through the forward and reverse rotation of the driving motor 411. When the moving block 42 moves toward the blanking hole 4133, the moving block 42 causes the rotating plate 414 to rotate on the load-bearing plate 413 through the V-shaped rod 415. Since a number of V-shaped rods 415 corresponding to the moving blocks 42 are installed under the rotating plate 414, when any one of the moving blocks 42 moves, the rotating plate 414 is driven to rotate by the V-shaped rod 415, and the rotating plate 414 can be rotated by the remaining V-shaped rods 415 to drive the moving blocks 42 to move toward the blanking hole 4133, so that the movement of one moving block 42 can make the remaining moving blocks 42 move synchronously, ensuring that the packaging box can be positioned without displacement and can be evenly stressed, avoiding the phenomenon of uneven force causing damage to the packaging box. When the moving block 42 moves in the opposite direction to the blanking hole 4133, the movement of one moving block 42 also drives the remaining moving blocks 42 to move, thereby canceling the clamping of the packaging box.

[0027] like Figure 6 , Figure 7 As shown, the telescopic assembly 5 includes a moving column 51, a compression spring 52 and a supporting mechanism 53; the moving column 51 is installed below the load-bearing plate 413, and the moving column 51 is in contact with the blanking hole 4133, the moving column 51 is connected to the load-bearing plate 413 through the compression spring 52, and the cross-sectional shape of the moving column 51 is stepped; the supporting mechanism 53 is arranged above the moving column 51, and the supporting mechanism 53 is provided with multiple groups, and the supporting mechanism 53 is arranged at the inner circumference of the blanking hole 4133, and in the initial state, the upper surface of the moving column 51 is connected to the supporting mechanism 53.

[0028] When printing the packaging box, first place the packaging box above the supporting mechanism 53, move the screen plate to the top of the packaging box through the printing device 2, and when the screen plate moves downward and fits the surface of the packaging box, it first contacts the clamping plate 44, and then the screen plate continues to move downward. When the screen plate fits the surface of the packaging box, the load-bearing plate 413 presses the compression spring 52 downward, and the moving column 51 will lift the supporting mechanism 53 upward, thereby ensuring that the surface of the packaging box is evenly stressed during printing, avoiding unclear patterns and texts printed on the surface of the packaging box, and reducing the printing quality of the packaging box.

[0029] like Figure 6 , Figure 7 , Figure 8 As shown, the support mechanism 53 includes a lifting plate 531, a connecting spring 534 and a supporting plate 535; the lifting plate 531 is arranged above the moving column (51), and the lifting plate 531 is slidably connected to the fixed plate 421 opened at the front end of the moving block 42, one side of the lifting plate 531 is an arc, and in the initial state, the lower surface of the lifting plate 531 contacts the upper surface of the moving column 51, and the minimum diameter of the moving column 51 is smaller than the arc diameter of the lifting plate 531; the lifting plate 531 is provided with a mounting groove 532, and a connecting spring 534 is arranged in the mounting groove 532, and the connecting spring 534 is provided in plurality, one end of the connecting spring 534 is fixedly connected to the lifting plate 531, and the other end is fixedly connected to the supporting plate 535, the arc end of the lifting plate 531 is provided with a slider 533, and the fixed plate 421 is provided with a sliding groove 422, when the moving column 51 moves upward, the slider 533 reciprocates in the sliding groove 422.

[0030] When the movable column 51 pushes the supporting mechanism 53 upward, the movable column 51 first contacts the bottom of the lifting plate 531, and then the lifting plate 531 moves upward through the slider 533 opened at the arc end of the lifting plate 531 to move in the sliding groove 422 opened on the fixed plate 421, so that the lifting plate 531 can drive the supporting plate 535 to fit with the packaging box through the connecting spring 534, so that the surface of the packaging box can be evenly stressed during printing. After the printing is completed, the load-bearing plate 413 recovers its original position through the connecting spring 534 after losing the squeezing of the silk screen. At this time, the movable column 51 no longer squeezes the lifting plate 531, and the lifting plate 531 causes the slider 533 to fall along the sliding groove 422 due to gravity. If the stability of the movement needs to be ensured, it can be appropriately increased. By increasing the number of sliders 533 and sliding grooves 422, and supporting the support plate 535 before printing, the packaging box can be clamped on the clamping assembly 4 without manual operation. The packaging box only needs to be placed at the specified position, and the packaging box can be automatically clamped and positioned by the clamping assembly 4, thereby reducing the labor intensity of manual operation. When the moving block 42 moves in the direction relative to the blanking hole 4133, the fixed plate 421 moves with the moving block 42, and the support plate 535 squeezes the connecting spring 534 to move toward the lifting plate 531. When the moving block 42 moves to the edge of the moving groove 4131, the support plate 535 fits with the lifting plate 531. At this time, the packaging box can fall into the discharge trough 126 through the blanking hole 4133 opened on the load-bearing plate 413.

[0031] The support plate 535 is provided with an inclined surface 5351 at one end. When the moving block 42 moves to drop materials, the support plate 535 moves in close contact with the load-bearing plate 413. The joint between the load-bearing plate 413 and the support plate 535 is a conical surface 4132 with an inclination angle consistent with the inclined surface 5351. When the support plate 535 contacts the load-bearing plate 413, the inclined surface 5351 cooperates with the conical surface 4132 to prevent jamming during movement, thereby preventing the device from failing to operate and causing the packaging box to fail to automatically fall onto the discharge chute 126.

[0032] The support plate 535 is flush with the upper surface of the load-bearing plate 413, and is arc-shaped. The downward movement distance of the load-bearing plate 413 is consistent with the upward movement distance of the support plate 535, so that when the printing device 2 is printing, the surface of the packaging box can be evenly stressed to avoid unclear patterns.

[0033] When the moving block 42 is in the middle position of the moving groove 4131, the moving block 42 drives the support plate 535 to extend a part of the blanking hole 4133. When the moving block 42 is at the outermost edge of the moving groove 4131, the moving block 42 drives the support plate 535 not to extend out of the blanking hole 4133. When the moving block 42 is in the moving groove 4131 close to the blanking hole 4133, the moving block 42 drives the support plate 535 to completely extend out of the blanking hole 4133, so that the packaging box can have sufficient supporting force before printing starts to prevent it from falling onto the discharge groove 126 through the blanking hole 4133. At the same time, the moving block 42 is in the middle position as the initial position of the moving block 42. When the moving block 42 is at the outermost edge, the printed packaging box can automatically fall onto the discharge groove 126 through the blanking hole 4133. When the moving block 42 is in the moving groove 4131 close to the blanking hole 4133, it can be evenly stressed during printing to ensure the printing quality of the packaging box.

[0034] The sensor 6 is fixedly mounted on the support plate 535, and multiple sensors are provided. The sensor 6 is used to detect the relative position of the support plate 535, and uses the sensing condition as a signal to drive the start and stop of the motor 411. The sensor 6 can realize automatic opening and closing of the clamping component 4, reducing manual operation and thus improving production efficiency.

[0035] Working principle: before printing starts, the operator places the packaging box on the support plate 535, and after the sensor 6 senses that there is an object on the support plate 535, the driving motor 411 is started, and the driving motor 411 rotates to drive the threaded rod 412 to move, and the movement of the threaded rod 412 causes the moving block 42 to move along the moving groove 4131 to the blanking hole 4133, and the V-shaped rod 415 under the moving block 42 drives the rotating plate 414 to rotate, and the remaining moving blocks 42 are driven to move through the remaining V-shaped rods 415, and the load-bearing plate 413 is moved. The moving block 42 moves synchronously, and when the moving block 42 moves, it squeezes the control spring 43, so that the clamping plate 44 fits around the packaging box to ensure that the packaging box remains in the same position during printing. After the clamping is completed, the rotating motor 121 drives the rotating platform 122 to move, and the clamping assembly 4 on the placement plate 124 is moved to the bottom of the printing device 2. The printing device 2 drives the screen plate to move downward, and the screen plate pushes the load-bearing plate 413 to move downward. The load-bearing plate 413 squeezes the compression spring 52, and at this time, the moving column 51 moves upward to push the lifting plate 531 The slider 533 on the lifting plate 531 moves along the sliding groove 422 on the fixed plate 421, and the supporting plate 535 is pressed against the packaging box for printing through the connecting spring 534. After the printing is completed, the printing device 2 drives the screen plate to move upward, the bearing plate 413 loses the squeeze, and the elastic potential energy of the compression spring 52 is restored to the original position. At this time, the rotating platform 122 continues to move, exposing the packaging box under the drying box 3 to dry the ink on the packaging box. After the drying is completed, the rotating platform 122 moves to the discharge port 111 At the position, the sensor 6 senses the relative position of the packaging box and starts the driving motor 411. The driving motor 411 drives the threaded rod 412 to move, and the moving block 42 moves to the relative position of the drop hole 4133. When the moving block 42 moves, it drives the support plate 535 to move along the conical surface 4132, so that the support plate 535 contacts the lifting plate 531. At this time, the packaging box falls through the drop hole 4133 to the discharge chute 126. Due to the slope of the discharge chute 126, the packaging box can slide out along the discharge port 111 and fall into the collection box.

[0036] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A printing and drying device for a packaging box, comprising a printing device body (1), used for printing and drying patterns on the surface of the packaging box, the printing device body (1) being provided with a base (11), the base (11) being provided with a discharge port (111), the base (11) being provided with a printing device (2) and a drying box (3) respectively around the base (11), the printing device (2) and the drying box (3) being arranged at adjacent positions, characterized in that: A rotating mechanism (12) is arranged above the base (11) for rotating the packaging box to print and dry the packaging box. A plurality of clamping assemblies (4) are arranged on the circumference of the rotating mechanism (12). The clamping assemblies (4) include a driving mechanism (41), a moving block (42), a control spring (43) and a clamping plate (44). The moving block (42) is arranged in the circumferential direction of the clamping assembly (4), and the clamping assembly (4) is provided with a plurality of moving blocks; one end of the moving block (42) is fixedly connected to a control spring (43), and the other side of the control spring (43) is connected to a clamping plate (44); The driving mechanism (41) is arranged on one side of the rotating mechanism (12), and the driving mechanism (41) is connected to the moving block (42); The moving block (42) is driven to move synchronously by the driving mechanism (41), and the moving block (42) drives the clamping plate (44) to adaptively clamp the packaging box through the control spring (43); The driving mechanism (41) comprises a driving motor (411), a threaded rod (412), a load-bearing plate (413), a rotating plate (414), and a V-shaped rod (415); The driving motor (411) is arranged on the placement plate (124), and the output end of the driving motor (411) is connected to a threaded rod (412), a moving block (42) is arranged on the threaded rod (412), and the threaded rod (412) causes the moving block (42) on the threaded rod (412) to move through the rotation of the driving motor (411); The load-bearing plate (413) is arranged above the placement plate (124); the load-bearing plate (413) is in the shape of an "I" character; a blanking hole (4133) is provided at the center of the load-bearing plate (413); and a plurality of moving grooves (4131) are provided in the circumferential direction of the blanking hole (4133) of the load-bearing plate (413); and the moving block (42) moves back and forth in the moving groove (4131); The rotating plate (414) is rotatably mounted on the circumference of the bearing plate (413); the V-shaped rod (415) is mounted below the rotating plate (414); a plurality of V-shaped rods (415) are provided; the V-shaped rods (415) are respectively provided at four corners of the rotating plate (414); one end of the V-shaped rod (415) is connected to the rotating plate (414); and the other end is connected to the moving block (42).

2. A printing and drying device for packaging boxes according to claim 1, characterized in that: The rotating mechanism (12) comprises a rotating motor (121), a rotating platform (122), a supporting column (123), a placement plate (124), a discharge hole (125) and a discharge trough (126); The support column (123) is fixedly mounted above the base (11), and a rotating platform (122) is rotatably arranged above the support column (123); The rotating motor (121) is installed above the base (11), and the rotating motor (121) is arranged inside the supporting column (123), and the output end of the rotating motor (121) is arranged perpendicular to the rotating platform (122); A plurality of placement plates (124) are arranged at circumferential positions of the rotating platform (122), and a clamping assembly (4) is provided on each of the plurality of placement plates (124). A discharge hole (125) and a discharge trough (126) are provided on the placement plates (124), and the discharge hole (125) is connected to the discharge trough (126), and the discharge trough (126) has a slope, and the slope of the discharge trough (126) is consistent with the inclination of the discharge port (111).

3. A printing and drying device for packaging boxes according to claim 1, characterized in that: It also includes a telescopic assembly (5), wherein the telescopic assembly (5) includes a moving column (51), a compression spring (52) and a supporting mechanism (53); The movable column (51) is installed below the load-bearing plate (413), and the movable column (51) is in contact with the blanking hole (4133). The movable column (51) is connected to the load-bearing plate (413) via a compression spring (52). The cross-sectional shape of the movable column (51) is a step shape. The support mechanism (53) is arranged above the moving column (51), and a plurality of the support mechanisms (53) are arranged. The support mechanisms (53) are arranged at the inner circumference of the blanking hole (4133). In an initial state, the upper surface of the moving column (51) is connected to the support mechanism (53).

4. A printing and drying device for packaging boxes according to claim 3, characterized in that: The support mechanism (53) comprises a lifting plate (531), a connecting spring (534) and a support plate (535); The lifting plate (531) is arranged above the moving column (51), and the lifting plate (531) is slidably connected to a fixed plate (421) provided at the front end of the moving block (42), one side of the lifting plate (531) is an arc, and in an initial state, the lower surface of the lifting plate (531) is in contact with the upper surface of the moving column (51), and the minimum diameter of the moving column (51) is smaller than the arc diameter of the lifting plate (531); The lifting plate (531) is provided with a mounting groove (532), a connecting spring (534) is arranged in the mounting groove (532), a plurality of connecting springs (534) are provided, one end of the connecting spring (534) is fixedly connected to the lifting plate (531), and the other end is fixedly connected to the support plate (535).

5. A printing and drying device for packaging boxes according to claim 4, characterized in that: A slider (533) is provided at the arc end of the lifting plate (531), and a sliding groove (422) is provided on the fixed plate (421). When the movable column (51) moves upward, the slider (533) reciprocates in the sliding groove (422).

6. A printing and drying device for packaging boxes according to claim 4, characterized in that: The support plate (535) has an inclined surface (5351) at one end. When the moving block (42) moves to perform blanking, the support plate (535) moves in contact with the load-bearing plate (413). The contact point between the load-bearing plate (413) and the support plate (535) is an inclined surface (5351) having an inclination angle consistent with that of the inclined surface (5351).

7. A printing and drying device for packaging boxes according to claim 6, characterized in that: The support plate (535) is flush with the upper surface of the load-bearing plate (413); the support plate (535) is arc-shaped; and the downward movement distance of the load-bearing plate (413) is consistent with the upward movement distance of the support plate (535).

8. A printing and drying device for packaging boxes according to claim 7, characterized in that: When the moving block (42) is in the middle position of the moving groove (4131), the moving block (42) drives the support plate (535) to extend a portion of the material drop hole (4133); when the moving block (42) is at the outermost edge of the moving groove (4131), the moving block (42) drives the support plate (535) not to extend out of the material drop hole (4133); when the moving block (42) is in the moving groove (4131) close to the material drop hole (4133), the moving block (42) drives the support plate (535) to extend completely out of the material drop hole (4133).

9. A printing and drying device for packaging boxes according to claim 1, characterized in that: It also includes a sensor (6), wherein the sensor (6) is fixedly mounted on the support plate (535) and a plurality of sensors (6) are provided, and the sensor (6) is used to detect the relative position of the support plate (535), and uses the sensing condition as a signal to start and stop the drive motor (411).

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