Continuous feeding type code spraying equipment for carton production

Abstract

The invention discloses continuous feeding type code spraying equipment for carton production, which comprises a belt conveyor, a code spraying machine is mounted on a mounting plate at the upper end of the belt conveyor, a U-shaped limiting plate is further arranged, and the U-shaped limiting plate is arranged at the upper end of a transmission belt of the belt conveyor. The distance between the lower end of the U-shaped limiting plate and the upper end of the conveying belt is consistent with the thickness of the cartons, and a bearing and pushing unit is further arranged and used for bearing the single cartons and pushing the single cartons to the conveying belt one by one. According to the carton feeding mode of the code spraying equipment, single cartons are pushed and fed from the bottoms of the stacked cartons, when the height of the stacked cartons is reduced, stacking and feeding can be conducted from the uppermost ends of the stacked cartons, the carton feeding continuity is guaranteed, and the working efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of cardboard box production technology, and in particular to a coding equipment for continuous feeding cardboard box production. Background Technology

[0002] Existing carton inkjet printers print codes on cartons by placing stacked cartons directly on the support plate of a lifting mechanism. The folded cartons are then conveyed to a belt conveyor by friction via motor-driven rollers located above the lifting mechanism for printing.

[0003] In actual operation, the lifting mechanism's support plate rises a certain distance each time, bringing the topmost cardboard box into contact with the rollers. The moving rollers then transport the cardboard box to the belt conveyor, where it continues to move upwards a certain distance to allow the next cardboard box to contact the rollers for transport. During this process, as the number of cardboard boxes decreases, workers cannot add more boxes to the stack. Only after all the cardboard boxes on the lifting mechanism have been transported can the lifting mechanism control the support plate to move downwards and return to its original position. At this point, workers can stack cardboard onto the support plate. During this feeding process (which requires a certain amount of operation time), there are no cardboard boxes on the belt conveyor that require coding, resulting in a decrease in paper coding efficiency. Therefore, this application provides a continuous feeding type coding equipment for cardboard box production to meet this need. Summary of the Invention

[0004] The purpose of this application is to provide a continuous feeding type inkjet printer for carton production, in order to solve the technical problem of low working efficiency of carton inkjet printers.

[0005] To achieve the above objectives, this application provides the following technical solution: a continuous feeding type inkjet printer for carton production, including a belt conveyor, an inkjet printer mounted on a mounting plate at the upper end of the belt conveyor, a U-shaped limiting plate disposed at the upper end of the drive belt of the belt conveyor, and the distance between the lower end of the U-shaped limiting plate and the upper end of the conveyor belt being consistent with the thickness of the carton, and a carrying and pushing unit for carrying individual cartons and pushing them one by one onto the conveyor belt.

[0006] As a preferred embodiment of this example, the material-carrying and pushing unit includes a chain conveyor and multiple material-pushing units mounted on the chain plates of the chain conveyor.

[0007] The upper end of the chain conveyor is provided with two sets of bearing plates facing each other, and the upper ends of the two sets of bearing plates are set at the same height as the upper end of the conveyor belt. The upper ends of the two sets of bearing plates are located below the U-shaped limiting plate.

[0008] Multiple pushing units are equally spaced on the corresponding chain plates. Each pushing unit includes a plate body, a vertical plate, and a pushing plate that are fixedly installed on the chain plate.

[0009] The upright plate is installed at the upper end of the plate body, and the push plate is installed on the upright plate;

[0010] When the chain conveyor is running, the pusher moves and pushes the carton at the bottom of the U-shaped limiting plate onto the conveyor belt.

[0011] As a preferred embodiment of this invention, a scratch-resistant mechanism is also provided to prevent the upper end of the push plate from scratching the bottom of the stacked cartons above.

[0012] As a preferred embodiment of this invention, the anti-scratch mechanism includes a lifting spring, a first contact roller, and a contact rod installed on the left end of the chain conveyor.

[0013] The push plate is connected to the upright plate via the lifting spring;

[0014] Both ends of the push plate are fixed with through rods, and both sets of through rods pass through the openings provided on the upright plate and are connected to the first contact roller.

[0015] The contact rod is provided in two sets, and the contact rod is provided with a guide slope and a transition arc surface.

[0016] In a preferred embodiment of this invention, a damping separation unit is also provided to dampen the movement of the pusher plate and cause the pusher plate to separate from the pushed carton in advance.

[0017] As a preferred embodiment of this invention, the damping separation unit includes a connecting spring, a second contact roller, a positioning spring, and a limiting rod.

[0018] The upright plate is slidably mounted on the plate body, and the upright plate is connected to the plate body by the connecting spring;

[0019] A movable column is slidably provided on the side end of the plate, and the second contact roller is rotatably provided on the outer end of the movable column. A positioning hole adapted to the positioning end of the movable column is provided on the upright plate.

[0020] The positioning spring is sleeved on the movable column, and the right end of the positioning spring is fixedly connected to the plate.

[0021] The limiting rod is installed on the chain conveyor and is located below the U-shaped limiting plate. The limiting rod has a positioning slope on its outer end around the U-shaped limiting plate.

[0022] In a preferred embodiment of this invention, the belt conveyor is provided with multiple sets of rollers arranged in rows, and the distance between the lower end of the multiple sets of rollers and the upper end of the conveyor belt is adapted to the thickness of the carton.

[0023] In summary, the technical effects and advantages of this invention are as follows:

[0024] 1. The present invention has a reasonable structure. The carton feeding method of this inkjet printing equipment is to push and feed individual cartons from the bottom of the stacked cartons. When the height of the stacked cartons decreases, the cartons can be stacked and fed from the top, which ensures the continuity of carton feeding and can improve work efficiency.

[0025] 2. In this invention, an anti-scratch mechanism is also provided to prevent the upper part of the push plate from scratching the bottom of the stacked cartons above.

[0026] 3. In this invention, a damping separation unit is also provided to dampen the movement of the push plate and cause the push plate to separate from the pushed carton in advance, which can effectively prevent wear or scratches from the contact end between the push plate and the carton, and further avoid affecting the quality of subsequent products. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the push plate structure;

[0030] Figure 3 for Figure 1 A partially enlarged schematic diagram of the middle contact rod;

[0031] Figure 4 for Figure 1 A top view of the structure of the medium-chain plate conveyor and the U-shaped limit plate.

[0032] In the diagram: 1. Chain conveyor; 2. Bearing plate; 3. U-shaped limiting plate; 4. Belt conveyor; 5. Mounting plate; 6. Roller; 7. Push plate; 8. Vertical plate; 9. Through rod; 10. First contact roller; 11. Plate body; 12. Lifting spring; 13. Contact rod; 14. Guide slope; 15. Transition arc surface; 16. Connecting spring; 17. Movable column; 18. Second contact roller; 19. Positioning spring; 20. Positioning hole; 21. Limiting rod; 22. Positioning slope. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example: Reference Figure 1 The continuous feeding type inkjet printing equipment for carton production shown includes a belt conveyor 4, an inkjet printer mounted on a mounting plate 5 at the upper end of the belt conveyor 4, a U-shaped limiting plate 3, which is located at the upper end of the drive belt of the belt conveyor 4, and the distance between the lower end of the U-shaped limiting plate 3 and the upper end of the conveyor belt is consistent with the thickness of the carton. It also includes a carrying and pushing unit for carrying individual cartons and pushing them one by one onto the conveyor belt.

[0035] As a preferred embodiment of this example, Figure 1-3 As shown, the material pushing unit includes a chain conveyor 1 and multiple material pushing units mounted on the chain plate of the chain conveyor 1.

[0036] The upper end of the chain conveyor 1 is provided with two sets of bearing plates 2, and the upper ends of the two sets of bearing plates 2 are set at the same height as the upper end of the conveyor belt. The upper ends of the two sets of bearing plates 2 are located below the U-shaped limiting plate 3.

[0037] Multiple pushing units are equally spaced on corresponding chain plates. Each pushing unit includes a plate 11, a vertical plate 8, and a pushing plate 7, which are fixedly installed on the chain plate.

[0038] The upright plate 8 is installed at the upper end of the plate body 11, and the push plate 7 is installed on the upright plate 8;

[0039] When the chain conveyor 1 is running, the pusher plate 7 moves and pushes the carton at the bottom of the U-shaped limit plate 3 onto the conveyor belt.

[0040] When in use, the stacked cartons are neatly placed in the U-shaped limiting cavity of the U-shaped limiting plate 3, and the stacked cartons are supported by the bearing plate 2. At this time, the belt conveyor 4 and the chain plate conveyor 1 can be controlled to work, and the running speed of the two is the same.

[0041] When the chain conveyor 1 is working, it drives the push plate 7 on the chain plate to move. When the push plate 7 moves, it will contact the side of the bottom carton and push the bottom carton to move towards the conveyor belt, and finally push the carton onto the conveyor belt. The adjacent stacked cartons move downwards under the action of gravity and contact the upper surface of the support plate 2, waiting for the push plate 7 to push them, which can form a continuous pushing and feeding.

[0042] When the number of cardboard boxes stacked in the U-shaped cavity of the U-shaped limiting plate 3 decreases, cardboard boxes can be manually added to the U-shaped limiting plate 3 to ensure that there are always cardboard boxes in the U-shaped cavity of the U-shaped limiting plate 4, which prepares for the continuous feeding of the push plate 7.

[0043] The carton feeding method of this inkjet printer is to push individual cartons from the bottom of the stack. When the height of the stacked cartons decreases, the cartons can be fed from the top, ensuring the continuity of carton feeding and improving work efficiency.

[0044] It should be noted that both belt conveyor 4 and chain conveyor 1 are electrically connected to the PLC controller.

[0045] As a preferred embodiment of this invention, a scratch-resistant mechanism is also provided to prevent the upper end of the push plate 7 from scratching the bottom of the stacked cartons above.

[0046] When the cartons are being pushed and fed, when the bottom cartons of the stack are completely pushed onto the conveyor belt, the stack of cartons will move downwards as a whole. During this process, the bottom cartons will come into contact with the top of the push plate 7, which can easily cause scratches on the bottom of the cartons, affecting product quality. Therefore, an anti-scratch mechanism is set up.

[0047] As a preferred embodiment of this example, Figure 2 and Figure 3 As shown, the anti-scratch mechanism includes a lifting spring 12, a first contact roller 10, and a contact rod 13 installed on the left end of the chain conveyor 1.

[0048] The push plate 7 is connected to the upright plate 8 via the lifting spring 12;

[0049] Both ends of the push plate 7 are fixed with through rods 9, and both sets of through rods 9 pass through the openings provided on the vertical plate 8 and are connected to the first contact roller 10.

[0050] The contact rod 13 is provided in two sets, and the contact rod 13 is provided with a guide slope 14 and a transition arc surface 15.

[0051] During operation, when most of the bottom cartons of the stacked cartons are conveyed onto the conveyor belt (at this time, the cartons can be completely conveyed onto the conveyor belt by the friction between the conveyor belt and the cartons, and then the coding operation is performed), the first contact roller 10 will contact the guide slope 14 on the contact rod 13 to compress the lifting spring 12, so that the push plate 7 moves vertically downward while moving laterally. Finally, the upper end of the push plate 7 moves to the bottom of the pushed cartons, and the bottom cartons continue to move onto the conveyor belt and finally move completely onto the conveyor belt. At this time, the stacked cartons move downward as a whole and are supported on the support plate 2, without contacting the push plate 7 to compress them, which can effectively prevent the cartons from being scratched or damaged.

[0052] The first contact roller 10 moves from the guide slope 14 to the transition arc surface 15 (during the process of the first contact roller 10 moving to the transition arc surface 15 until it completely separates from the contact rod 13, the push plate 7 cannot contact the pushed carton). After finally contacting and separating from the contact rod 13, the push plate 7 returns to its original position by the elastic force of the lifting spring 12, which facilitates the subsequent push operation.

[0053] It should be noted that the upper end of the support plate 2 is designed to be a smooth surface to reduce friction with the cardboard box.

[0054] As a preferred embodiment of this invention, a damping separation unit is also provided to dampen the movement of the push plate 7 and cause the push plate 7 to separate from the pushed carton in advance.

[0055] When the pusher plate 7 is pushing the bottom carton, it will move downward relative to the carton in the later stage. At this time, the pusher plate 7 will squeeze and rub against the bottom of the carton, which can easily cause wear or scratches on this contact end of the carton, affecting the quality of subsequent products. Therefore, a damping separation unit is set up.

[0056] As a preferred embodiment of this example, Figure 2 and Figure 4 As shown, the damping separation unit includes a connecting spring 16, a second contact roller 18, a positioning spring 19, and a limiting rod 21;

[0057] The upright plate 8 is slidably mounted on the plate body 11, and the upright plate 8 is connected to the plate body 11 by a connecting spring 16;

[0058] A movable column 17 is slidably provided on the side end of the plate 11, and a second contact roller 18 is rotatably provided on the outer end of the movable column 17. A positioning hole 20 adapted to the positioning end of the movable column 17 is provided on the upright plate 8.

[0059] The positioning spring 19 is sleeved on the movable column 17, and the right end of the positioning spring 19 is fixedly connected to the plate 11.

[0060] The limiting rod 21 is installed on the chain conveyor 1 and is located below the U-shaped limiting plate 3. The limiting rod 21 is provided with a positioning inclined surface 22 on the outer end of the U-shaped limiting plate 3.

[0061] Before the push plate 7 contacts the side of the carton, its movable column 17 is not inserted into the positioning hole 20. When the push plate 7 is about to contact the carton, the second contact roller 18 will contact the positioning ramp 22. As the push plate 7 moves, the movable column 17 is squeezed by the positioning ramp 22 and then inserts into the positioning hole, locking the upright plate 8 and preventing it from moving. Subsequently, the second contact roller 18 moves to the flat end of the limit rod 21, keeping the upright plate 8 locked. As the push plate 7 continues to move, it will contact the carton and push the carton to move. When most of the carton has moved onto the conveyor belt, the second contact roller 18 will then separate from the limit rod 21. Through the elastic force of the positioning spring 19, the positioning end of the movable column 17 moves out of the positioning hole 20. At this time, the locking of the upright plate 8 is released, and the subsequent moving first contact roller 10 contacts the guide slope 14 on the contact rod 13. The guide slope 14 exerts lateral and vertical forces on the first contact roller 10. The vertical force allows the push plate 7 to move downward relative to the carton, and the lateral force allows the push plate 7 to move to the right relative to the plate 11 (i.e., slow down the movement speed), thereby causing the push plate 7 to separate from the carton. Subsequently, the carton is completely transferred to the conveyor belt by the friction between the conveyor belt and the carton.

[0062] This damping separation unit can effectively prevent wear or scratches from occurring at the contact end between the push plate and the carton, thus avoiding affecting the quality of subsequent products.

[0063] As a preferred embodiment of this example, Figure 1 As shown, multiple sets of rollers 6 are arranged in rows on the belt conveyor 4, and the distance between the lower end of the multiple sets of rollers 6 and the upper end of the conveyor belt is adapted to the thickness of the carton.

[0064] When the carton is transported to the conveyor belt, it passes through the gap between the roller 6 and the conveyor belt. The roller 6 will squeeze the top of the carton, thereby increasing the friction between the carton and the conveyor belt. This helps to completely transfer the carton onto the conveyor belt through the friction between the conveyor belt and the carton.

[0065] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous feeding type inkjet printer for carton production, comprising a belt conveyor (4), wherein an inkjet printer is mounted on a mounting plate (5) at the upper end of the belt conveyor (4), characterized in that: A U-shaped limiting plate (3) is also provided, and the U-shaped limiting plate (3) is located at the upper end of the transmission belt of the belt conveyor (4). The distance between the lower end of the U-shaped limiting plate (3) and the upper end of the conveyor belt is consistent with the thickness of the carton. A carrying and pushing unit is also provided to carry a single carton and push the single carton onto the conveyor belt one by one.

2. The continuous feeding type inkjet printing equipment for carton production according to claim 1, characterized in that: The material-carrying and pushing unit includes a chain plate conveyor (1) and multiple material-pushing units installed on the chain plate of the chain plate conveyor (1); The upper end of the chain plate conveyor (1) is provided with two sets of bearing plates (2) facing each other, and the upper ends of the two sets of bearing plates (2) are set at the same height as the upper end of the conveyor belt. The upper ends of the two sets of bearing plates (2) are located below the U-shaped limiting plate (3). Multiple pushing units are equally spaced on the corresponding chain plates. Each pushing unit includes a plate (11), a vertical plate (8), and a pushing plate (7) fixedly installed on the chain plate. The upright plate (8) is installed on the upper end of the plate body (11), and the push plate (7) is installed on the upright plate (8). When the chain conveyor (1) is running, the pusher (7) moves and pushes the bottom carton of the U-shaped limiting plate (3) onto the conveyor belt.

3. The continuous feeding type inkjet printing equipment for carton production according to claim 2, characterized in that: It is also equipped with a scratch-resistant mechanism to prevent the upper end of the push plate (7) from scratching the bottom of the stacked cartons above.

4. The continuous feeding type inkjet printing equipment for carton production according to claim 3, characterized in that: The anti-scratch mechanism includes a lifting spring (12), a first contact roller (10), and a contact rod (13) installed on the left end of the chain conveyor (1). The push plate (7) is connected to the upright plate (8) via the lifting spring (12); Both ends of the push plate (7) are fixed with through rods (9), and both sets of through rods (9) pass through the openings provided on the upright plate (8) and are connected to the first contact roller (10). The contact rod (13) is provided in two sets, and the contact rod (13) is provided with a guide slope (14) and a transition arc surface (15).

5. The continuous feeding type inkjet printing equipment for carton production according to claim 4, characterized in that: It is also provided with a damping separation unit, which is used to dampen the movement of the push plate (7) and make the push plate (7) separate from the pushed carton in advance.

6. The continuous feeding type inkjet printing equipment for carton production according to claim 5, characterized in that: The damping separation unit includes a connecting spring (16), a second contact roller (18), a positioning spring (19), and a limiting rod (21). The upright plate (8) is slidably disposed on the plate body (11), and the upright plate (8) is connected to the plate body (11) through the connecting spring (16); A movable column (17) is slidably provided on the side end of the plate (11), and the second contact roller (18) is rotatably provided on the outer end of the movable column (17). A positioning hole (20) adapted to the positioning end of the movable column (17) is provided on the upright plate (8). The positioning spring (19) is sleeved on the movable column (17), and the right end of the positioning spring (19) is fixedly connected to the plate (11). The limiting rod (21) is installed on the chain conveyor (1) and located below the U-shaped limiting plate (3). The limiting rod (21) has a positioning inclined surface (22) on its outer end around the U-shaped limiting plate (3).

7. The continuous feeding type inkjet printing equipment for carton production according to claim 2, characterized in that: The belt conveyor (4) is provided with multiple sets of rollers (6) arranged in rows, and the distance between the lower end of the multiple sets of rollers (6) and the upper end of the conveyor belt is adapted to the thickness of the carton.

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