A carton printing apparatus

Abstract

The application relates to a carton printing device which comprises a base, a conveying belt arranged on the top end of the base, a left support and a right support arranged on the two ends of the base respectively, a left printing mechanism arranged on the left support, a right printing mechanism arranged on the right support, a space between the left printing mechanism and the right printing mechanism and the conveying belt, and the left printing mechanism and the right printing mechanism oppositely arranged. The device has the advantages of simple structure, left and right printing mechanisms oppositely arranged, left and right printing panels driven to move synchronously with the conveying belt after printing of the carton is completed, the left and right printing panels kept on the carton for a period of time after the printing of the carton is completed, uniformity of the ink after the printing of the carton ensured, the quality of the printing of the carton improved, and the printing efficiency of the pattern on the carton improved.

Description

Technical Field

[0001] This invention relates to a printing apparatus, and more particularly to a carton printing apparatus. Background Technology

[0002] Printing is a technology that involves transferring ink from original manuscripts such as text, pictures, photographs, and anti-counterfeiting materials to the surface of materials like paper, textiles, plastics, leather, PVC, and PC through processes such as plate making, inking, and pressing. Printing is the process of transferring approved printing plates onto a substrate using printing machinery and specialized inks. In the production of packaging cartons, it is necessary to print the company's trademark on the surface of the cartons.

[0003] However, existing cardboard printing equipment requires the cardboard to stop moving when it is transported to the printing plate side. Then, the printing plate is attached to the surface of the cardboard to print the pattern and is held for a period of time to ensure uniform ink printing. Then, the printing plate is separated from the cardboard and the cardboard can continue to move. Each printing requires a pause, which increases the overall working time and is inefficient. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art. To this end, the present invention proposes a carton printing apparatus.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a carton printing device, including a base, a conveyor belt on the top of the base, a left support and a right support on both ends of the base, a left printing mechanism on the left support, a right printing mechanism on the right support, a gap between the left printing mechanism and the right printing mechanism and the conveyor belt, and the left printing mechanism and the right printing mechanism are arranged opposite to each other;

[0006] The left printing mechanism includes a left first hydraulic cylinder, a left top plate, a left second hydraulic cylinder, and a left printing panel. The left first hydraulic cylinder is mounted on a left support and is connected to the left top plate. The bottom end of the left top plate is connected to the left printing panel via the left second hydraulic cylinder.

[0007] The right printing mechanism includes a right first hydraulic cylinder, a right top plate, a right second hydraulic cylinder, and a right printing panel. The right first hydraulic cylinder is mounted on a right support and is connected to the right top plate. The bottom end of the right top plate is connected to the right printing panel via the right second hydraulic cylinder.

[0008] In a preferred embodiment of the present invention, the left top plate is disposed at the top of the left support, the bottom of both ends of the left support is provided with left sliders, the base is provided with slide rails on both sides, and the left sliders are matched and disposed in the slide rails.

[0009] The right top plate is located at the top of the right support, and right sliders are located at the bottom of both ends of the right support. The right sliders are matched and located in the slide rail.

[0010] In a preferred embodiment of the present invention, both the left first hydraulic cylinder and the right first hydraulic cylinder are horizontally arranged, the left printing panel moves closer to the right printing panel under the action of the left first hydraulic cylinder, and the right printing panel moves closer to the left printing panel under the action of the right first hydraulic cylinder; both the left second hydraulic cylinder and the right second hydraulic cylinder are vertically arranged.

[0011] In a preferred embodiment of the present invention, a left mounting plate is provided between the left top plate and the left second hydraulic cylinder. The left mounting plate is connected to the left top plate by a screw. The screw extends out of the left mounting plate and is connected to a screw motor. A spring is sleeved on the outer ring of the screw between the left top plate and the left mounting plate. The left second hydraulic cylinder is connected to the bottom end of the left mounting plate.

[0012] A right mounting plate is provided between the right top plate and the right second hydraulic cylinder. The right mounting plate is connected to the right top plate by a screw. The screw extends out of the mounting plate and is connected to a screw motor. A spring is sleeved on the outer ring of the screw between the right top plate and the right mounting plate. The right second hydraulic cylinder is connected to the bottom end of the right mounting plate.

[0013] In a preferred embodiment of the present invention, both the left support and the right support are provided with support slide rails along their length on the side facing the conveyor belt, and the left top plate and the right top plate are respectively arranged in the corresponding support slide rails.

[0014] In a preferred embodiment of the present invention, the left support and the right support are respectively provided with a pressing plate in the support slide rail. The pressing plate is set in the support slide rail by a pressing slider. The pressing plate is connected to the left support or the right support by a third hydraulic cylinder. An elastic layer is provided on the side of the pressing plate facing the support plate.

[0015] In a preferred embodiment of the present invention, a support plate is provided at the bottom end of the conveyor belt, the support plate is connected, the width of the support plate is flush with the width of the conveyor belt, the length of the support plate is less than the length of the conveyor belt, and one end of the support plate is matched and located at the bottom end of the right support, and the support plate moves synchronously with the conveyor belt.

[0016] In a preferred embodiment of the present invention, the support plate and the right bracket are provided with a connecting mechanism, the connecting mechanism including a connecting rod and a fourth hydraulic cylinder, one end of the connecting rod being connected to the right bracket and the other end being connected to the fourth hydraulic cylinder, and the fourth hydraulic cylinder being connected to the support plate.

[0017] In a preferred embodiment of the present invention, the support plate is provided with an anti-slip layer on the side facing the conveyor belt.

[0018] In a preferred embodiment of the present invention, the left support and the right support are connected by a synchronizing rod.

[0019] The beneficial effects of this invention are: the invention has a simple structure. Through the left and right printing mechanisms arranged in opposite directions, the left and right printing panels are driven to move synchronously with the conveyor belt after the carton is printed. This ensures that the left and right printing panels can remain on the carton for a period of time after printing, thus ensuring the uniformity of ink after printing, improving the quality of carton printing, and increasing the printing efficiency of patterns on the carton. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the left mounting plate and clamping plate structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the support plate structure of the present invention;

[0024] In the diagram: Base 1; Conveyor belt 2; Left support 3; Right support 4; Left printing mechanism 5; Left first hydraulic cylinder 501; Left top plate 502; Left second hydraulic cylinder 503; Left printing panel 504; Left bracket 505; Left slider 506; Left mounting plate 507; Right printing mechanism 6; First hydraulic cylinder 601; Right top plate 602; Right second hydraulic cylinder 603; Right printing panel 604; Right bracket 605; Right slider 606; Right mounting plate 607; Screw 7; Screw motor 8; Spring 9; Pressing plate 10; Elastic layer 1001; Pressing slider 11; Bracket slide rail 12; Third hydraulic cylinder 13; Support plate 14; Connecting rod 1501; Fourth hydraulic cylinder 1502; Synchronizing rod 16. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] like Figures 1 to 4 The diagram shows a carton printing device, including a base 1, a conveyor belt 2 at the top of the base 1, a left support 3 and a right support 4 at the two ends of the base, a left printing mechanism 5 on the left support 3, and a right printing mechanism 6 on the right support 4. Both the left printing mechanism 5 and the right printing mechanism 6 are spaced apart from the conveyor belt, and the left printing mechanism 5 and the right printing mechanism 6 are arranged opposite to each other.

[0028] The left printing mechanism 5 includes a left first hydraulic cylinder 501, a left top plate 502, a left second hydraulic cylinder 503, and a left printing panel 504. The left first hydraulic cylinder 503 is mounted on the left support 3. The left first hydraulic cylinder 501 is connected to the left top plate 502. The bottom end of the left top plate 502 is connected to the left printing panel 504 through the left second hydraulic cylinder 503.

[0029] The right printing mechanism 6 includes a right first hydraulic cylinder 601, a right top plate 602, a right second hydraulic cylinder 603, and a right printing panel 604. The right first hydraulic cylinder 601 is mounted on the right support 4 and is connected to the right top plate 602. The bottom end of the right top plate 602 is connected to the right printing panel 604 through the right second hydraulic cylinder 603.

[0030] In use, the cartons to be printed are transported by the conveyor belt 2. The left and right printing mechanisms located on the upper part of the conveyor belt 2 respectively print patterns on the cartons on the conveyor belt. Specifically, the left top plate 502 extends to the right top plate under the action of the left first hydraulic cylinder 501, so that the left printing panel 504 located at the bottom of the left second hydraulic cylinder 503 moves closer to the right printing panel 604, while the right printing mechanism always maintains the initial state, thus preparing for the pattern printing of two adjacent cartons on the conveyor belt 2. When conveyor belt 2 transports two adjacent cartons to the lower parts of the left printing panel 504 and right printing panel 604 respectively, the left printing panel 504 moves downward under the action of the left second hydraulic cylinder 503 to print the pattern on the cartons located below the left printing panel 504 on conveyor belt 2. Simultaneously, the right second hydraulic cylinder 603 is activated, causing the right printing panel 604 to move downward under its action, thus printing the pattern on the cartons located below the right printing panel. Since the pattern on the cartons needs to remain for a period of time after printing to ensure uniform ink printing, and because conveyor belt 2 maintains a low speed during this period, the left first hydraulic cylinder 501 is driven to retract, maintaining the retraction speed of the left first hydraulic cylinder 501 at the same speed as the conveyor belt. 501 drives the left top plate 502 to gradually reset, which in turn drives the left printing panel 504 to cover the carton and move synchronously to the left. This achieves the requirement that the left printing panel stays on the carton for a period of time after printing, ensuring the uniformity of the printing ink on the carton pattern. Similarly, during the forward movement of the carton by the conveyor belt 2, in this application, the carton moves from the right support 4 to the left support 3 under the action of the conveyor belt. The right first hydraulic cylinder 601 drives the right top plate 602 to move towards the left support 3, which in turn drives the second hydraulic cylinder 603 located at the bottom of the right top plate 602 to move to the left. This keeps the right printing panel 604 covering the carton, so that the right printing panel 604 and the carton move synchronously. This achieves the requirement that the right printing panel stays on the carton for a period of time after the pattern printing is completed, ensuring the uniformity of the printing ink on the carton. After the left first hydraulic cylinder 501 retracts to its position, the left second hydraulic cylinder 503 can be driven to lift the left printing panel 504 up and down. The printed carton is then conveyed out by the conveyor belt. Then, the left first hydraulic cylinder 501 extends, driving the left printing panel 504 to move closer to the right support 4, facilitating the printing of the next carton. Similarly, after the right first hydraulic cylinder 601 extends to its position, the right second hydraulic cylinder 603 can be driven to lift the right printing panel 604. The printed carton is then conveyed forward by the conveyor belt. The right first hydraulic cylinder 603 retracts, facilitating the retraction of the right printing panel 604, preparing for the next carton printing.

[0031] This invention has a simple structure. Through the opposing left and right printing mechanisms, the left and right printing panels are driven to move synchronously with the conveyor belt after the carton is printed. This ensures that the left and right printing panels can remain on the carton for a period of time after printing, thus ensuring the uniformity of ink after printing, improving the quality of carton printing, and increasing the printing efficiency of patterns on the carton.

[0032] In a preferred embodiment, the left top plate 502 in this application is disposed at the top of the left support 505, and the bottom of both ends of the left support 505 are provided with left sliders 506. The base 1 is provided with slide rails 101 on both sides, and the left sliders 506 are matchedly disposed in the slide rails 101.

[0033] The right top plate 602 is located at the top of the right support 605, and right sliders 606 are located at the bottom of both ends of the right support 605. The right sliders 606 are matched and located in the slide rail 101.

[0034] When the left and right top plates move under the drive of the corresponding left and right first hydraulic cylinders, the left and right sliders move along the corresponding slide rails, so that the left and right top plates maintain balance and stability when moving along the base under the drive of the left and right first hydraulic cylinders. This improves the stability of the movement of the left and right printing panels, ensures the synchronous and stable operation between the left and right printing panels and the conveyor belt, improves the efficiency and effect of the left and right printing panels for carton printing, and ensures the uniformity of the printing ink on the carton.

[0035] In a preferred embodiment, the left first hydraulic cylinder 501 and the right first hydraulic cylinder 601 in this application are both horizontally arranged. The left printing panel 504 moves closer to the right printing panel 504 under the action of the left first hydraulic cylinder 501, and the right printing panel 504 moves closer to the left printing panel 504 under the action of the right first hydraulic cylinder 601. This makes the left and right printing panels run in opposite directions after being driven, which facilitates printing on two adjacent cartons on the conveyor belt and ensures that the left and right printing mechanisms print on two adjacent cartons in an orderly manner. The left second hydraulic cylinder 503 and the right second hydraulic cylinder 603 are both vertically arranged to achieve stability in the printing of cartons.

[0036] In a preferred embodiment, a left mounting plate 507 is provided between the left top plate 502 and the left second hydraulic cylinder 503. The left mounting plate 507 is connected to the left top plate 501 via a screw 7. The screw 7 extends out of the left mounting plate and is connected to a screw motor 8. A spring 9 is sleeved on the outer ring of the screw between the left top plate 501 and the left mounting plate 507. The left second hydraulic cylinder 503 is connected to the bottom end of the left mounting plate 507.

[0037] A right mounting plate 607 is provided between the right top plate 602 and the right second hydraulic cylinder 603. The right mounting plate 607 is connected to the right top plate 602 through a screw 7. The screw 7 extends out of the right mounting plate and is connected to a screw motor 8. A spring 9 is sleeved on the outer ring of the screw between the right top plate 602 and the right mounting plate 607. The bottom end of the right mounting plate 607 is connected to the right second hydraulic cylinder 603.

[0038] When printing on cartons, the left and right printing panels are driven by the left and right second hydraulic cylinders respectively. Maintaining a constant stroke of the left and right second hydraulic cylinders ensures a constant pressure on the cartons from the printing panels, thus guaranteeing the stability of the pressure on the printed patterns. Since cartons vary in size and thickness, when printing on cartons of different thicknesses, the screw motor 8 is driven. The screw motor 8 rotates the screw, causing the left and right mounting plates to move up and down along the screw. This, in turn, moves the left and right printing panels located below the mounting plates up and down, ultimately adjusting the distance between the printing panels and the cartons. This adapts to cartons of different thicknesses, improving the applicability of the carton printing device. The springs on the screws facilitate adjustment and reset of the mounting plates, improving the stability of their up-and-down movement along the screw and allowing for fine-tuning of the distance between the printing panels and the cartons, further enhancing the adaptability of the carton printing device.

[0039] In a preferred embodiment, both the left support 505 and the right support 605 in this application are provided with support rails 12 along their length on the side facing the conveyor belt, and the left top plate 502 and the right top plate 602 are respectively disposed within the corresponding support rails 12. This facilitates the movement of the left and right top plates, thereby enabling the movement of the left and right printing panels, which is convenient for adapting to printing at different positions on the carton and improving the adaptability of the carton printing device. The left support 505 and the right support 605 are respectively provided with pressing plates 10 in their support slide rails. The pressing plates 10 are set in the support slide rails 12 via pressing sliders 11. The pressing plates 10 are connected to the left or right support via a third hydraulic cylinder 13. Before printing on the carton, the carton needs to be fixed to prevent displacement of the carton when the left and right printing panels come into contact with it. In this application, the pressing plates 10 are driven downward by the third hydraulic cylinder 13, thereby pressing the carton with the pressing plates 10. An elastic layer 1001 is provided on the side of the pressing plates 10 facing the conveyor belt 2. The elastic layer 1001 reduces hard contact between the pressing plates and the carton, preventing damage to the carton by the pressing plates. The pressing plates are set in the support slide rails 12 via pressing sliders, which allows the pressing plates to move on the left and right supports, making it easier to fix cartons of different widths and improving the adaptability of carton printing.

[0040] In a preferred embodiment, a support plate 14 is provided at the bottom end of the conveyor belt 2 in this application. The width of the support plate 14 is flush with the width of the conveyor belt 2, and the length of the support plate 14 is less than the length of the conveyor belt 2. One end of the support plate 14 is located at the bottom end of the right bracket 605, and the support plate 14 moves synchronously with the conveyor belt 2. When the conveyor belt 2 conveys the carton and the left and right printing mechanisms print patterns on the carton, the support plate 14 provides support for the conveyor belt 2, effectively reducing the occurrence of conveyor belt deformation caused by excessive pressure during the printing process. Furthermore, the support plate provides rigid support to the bottom of the carton, ensuring the printing effect of the left and right printing mechanisms. The synchronously moving support plate 14 and conveyor belt 2 facilitate the support of the carton by the support plate when the left and right printing mechanisms cover it, reducing or preventing carton deformation.

[0041] The support plate 14 and the right support 605 are connected by a connecting mechanism, which includes a connecting rod 1501 and a fourth hydraulic cylinder 1502. One end of the connecting rod 1501 is connected to the right support 605, and the other end is connected to the fourth hydraulic cylinder 1502. The fourth hydraulic cylinder 1502 is connected to the support plate 14. The connecting rod enables the connection between the support plate 14 and the right support 605, allowing them to operate synchronously. This improves the synchronicity and stability of their movement, facilitating the matching of the support plate 14 with the conveyor belt's speed and direction, and enhancing the support effect of the support plate on the conveyor belt. The fourth hydraulic cylinder drives the support plate to move up and down, thereby adjusting the distance between the support plate and the conveyor belt. This facilitates the left and right movement of the support plate along with the right support, improving adaptability. The support plate 14 is provided with an anti-slip layer on the side facing the conveyor belt 2 to prevent the support plate from slipping when supporting the conveyor belt and to improve the stability of the support plate 14 in supporting the conveyor belt.

[0042] In a preferred embodiment, the left support 505 and the right support 605 in this application are connected by a synchronizing rod 16. The synchronizing rod 16 enables the left support 505 and the right support 605 to move synchronously, so that the left and right printing mechanisms can move synchronously along the conveyor belt after printing on the carton, thereby achieving synchronous and stable operation of the left and right printing mechanisms and improving the stability and safety of the printing device.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A carton printing apparatus, characterized by, The base is provided with a conveyor belt at the top end, left and right supports are respectively arranged at the two ends of the base, a left printing mechanism is arranged on the left support, a right printing mechanism is arranged on the right support, the left and right printing mechanisms are spaced apart from the conveyor belt, and the left and right printing mechanisms are oppositely arranged. The left printing mechanism comprises a left first hydraulic cylinder, a left top plate, a left second hydraulic cylinder and a left printing panel, the left first hydraulic cylinder is arranged on the left support, the left first hydraulic cylinder is connected with the left top plate, and the left top plate is connected with the left printing panel through the left second hydraulic cylinder at the bottom end. The right printing mechanism comprises a right first hydraulic cylinder, a right top plate, a right second hydraulic cylinder and a right printing panel, the right first hydraulic cylinder is arranged on the right support, the right first hydraulic cylinder is connected with the right top plate, and the right top plate is connected with the right printing panel through the right second hydraulic cylinder at the bottom end. The left top plate is arranged at the top end of the left support, left sliding blocks are arranged at the bottom of the two ends of the left support, slide rails are arranged on the two sides of the base, and the left sliding blocks are matched and arranged in the slide rails. The right top plate is arranged at the top end of the right support, right sliding blocks are arranged at the bottom of the two ends of the right support, and the right sliding blocks are matched and arranged in the slide rails. A support plate is arranged at the bottom end of the conveyor belt, the width of the support plate is flush with the width of the conveyor belt, the length of the support plate is less than the length of the conveyor belt, one end of the support plate is matched and arranged at the bottom end of the right support, and the support plate moves synchronously with the conveyor belt. The support plate and the right support are provided with a connecting mechanism, the connecting mechanism comprises a connecting rod and a fourth hydraulic cylinder, one end of the connecting rod is connected with the right support, one end of the connecting rod is connected with the fourth hydraulic cylinder, the fourth hydraulic cylinder is connected with the support plate. When the conveyor belt transports two adjacent cartons to the lower parts of the left and right printing panels respectively, the left printing panel moves downward under the action of the left second hydraulic cylinder to realize printing of patterns on the carton located at the lower part of the left printing panel, and the right second hydraulic cylinder is started to make the right printing panel move downward under the action of the right second hydraulic cylinder to realize printing of patterns on the carton located at the lower part of the right printing panel.

2. The carton printing apparatus of claim 1, wherein, The left and right first hydraulic cylinders are horizontally arranged, the left printing panel moves close to the right printing panel under the action of the left first hydraulic cylinder, and the right printing panel moves close to the left printing panel under the action of the right first hydraulic cylinder.

3. The carton printing apparatus of claim 1, wherein, A left mounting plate is arranged between the left top plate and the left second hydraulic cylinder, the left mounting plate is connected with the left top plate through a screw rod, the screw rod is connected with a screw rod motor after extending out of the left mounting plate, a spring is sleeved on the outer ring of the screw rod between the left top plate and the left mounting plate, and the left second hydraulic cylinder is connected with the bottom end of the left mounting plate. A right mounting plate is arranged between the right top plate and the right second hydraulic cylinder, the right mounting plate is connected with the right top plate through a screw rod, the screw rod is connected with a screw rod motor after extending out of the mounting plate, a spring is sleeved on the outer ring of the screw rod between the right top plate and the right mounting plate, and the right second hydraulic cylinder is connected with the bottom end of the right mounting plate.

4. The carton printing apparatus of claim 1, wherein, The left support and the right support are provided with support sliding rails along the length direction on one side of the conveying belt, and the left top plate and the right top plate are correspondingly arranged in the corresponding support sliding rails.

5. The carton printing apparatus of claim 4, wherein, The support sliding rails of the left support and the right support are further correspondingly provided with pressing plates, the pressing plates are arranged in the support sliding rails through pressing sliding blocks, the pressing plates are connected with the left support or the right support through third hydraulic cylinders, and one side of the pressing plates facing the supporting plate is provided with an elastic layer.

6. The carton printing apparatus of claim 1, wherein, The supporting plate is provided with an antiskid layer on one side facing the conveying belt.

7. The carton printing apparatus of claim 1, wherein, The left support and the right support are connected through a synchronous rod.

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