Guide mechanism for printing of packaging and decorating printed matters

Abstract

The utility model belongs to the technical field of printing equipment, and relates to a guide mechanism for printing packaging and decorating printed matters, which comprises a box body, a driving roller, a driven roller and a tension adjusting device, when materials enter the guide mechanism, the materials are guided to the position between the driving roller and the driven roller along with a guide rail, and if the materials deviate, lateral force is generated, and the tension adjusting device is used for adjusting the tension of the materials. The driving roller swings clockwise around the driving shaft, so that the left side edge of the material is pushed to move rightwards, and the original leftward deviation is counteracted; if the offset is too large, the elastic cushion can prevent the driving roller from swinging excessively, prevent the material from being torn and prevent the roller from abutting against the material, when the tension of the material is too large, the second flexible hinge deforms, the roller generates downward pressure, automatic balance of the tension is achieved, the material is prevented from being broken, and due to the segmented design of the elastic shaft, elastic deformation can be generated when the tension suddenly changes; printed matter deviation caused by sudden increase of tension is avoided, shafting eccentricity caused by installation errors or long-term use is made up, and material deviation is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of printing equipment technology, specifically a guiding mechanism for printing packaging and decoration printed materials. Background Technology

[0002] Printed matter refers to printed books, newspapers, pictures, and other printed products. It encompasses all printed products and is a general term for various finished products manufactured using printing technology. In daily life, people encounter a vast array of printed materials, including newspapers, magazines, maps, posters, advertisements, envelopes, letterheads, file folders, trademarks, labels, business cards, invitations, banknotes, greeting cards, desk calendars, wall calendars, brochures, various certificates and cards, packaging boxes, gift boxes, circuit boards, and so on. Printed matter permeates almost every aspect of people's lives, from clothing and food to housing and transportation, and is closely intertwined with their daily routines.

[0003] In the packaging and decoration printing process, the accuracy of material guidance directly affects the printing quality. However, traditional guiding mechanisms have the following defects: reliance on electronic control systems: requiring sensors, PLCs, and servo motors, resulting in high costs and complex maintenance, and a high failure rate in dusty and humid environments; insufficient rigid guidance: fixed-angle guide rollers cannot adapt to material tension fluctuations, and are prone to serpentine deviations during high-speed printing. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a guiding mechanism for printing packaging and decoration materials, thereby solving the problems of excessive cost and inability to automatically correct deviations in guiding mechanisms.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a guiding mechanism for printing packaging and decoration materials, characterized in that it includes a box body, a driving roller, a driven roller, and a tension adjusting device. The box body is rectangular, and the driving roller, driven roller, and tension adjusting device are all installed inside the box body. Driving holes are symmetrically arranged on the left and right side walls of the box body. The driving roller is cylindrical and located near the top surface of the box body, with its two circular surfaces facing the driving holes. Driving shafts are arranged on both sides of the driving roller, passing through the driving holes and connected at both ends. The box has a counterweight, which is located on the outside of the box. The driven roller is located below the driving roller, near the bottom of the box. The driven roller is segmented, with multiple segments connected together by an elastic shaft. The left and right side walls of the box have symmetrical driven holes, which are directly opposite the driven roller and the elastic shaft and are fixed to the box by connecting seats. The connecting seats are symmetrically installed on the inside and outside of the box according to their location on the left and right side walls. The tension adjustment device is fixed on the front or rear edge of the box, and the bottom height of the tension adjustment device is the same as the height of the interval between the driven roller and the driving roller.

[0006] Optionally, a mounting seat is provided in the active hole. The mounting seat is annular and fits the active hole. A first flexible hinge is provided inside the mounting seat. The active shaft passes through both ends of the first flexible hinge. The first flexible hinge is in the shape of an "eight". An elastic pad is provided at the hollowed-out part where the first flexible hinge connects to the active hole.

[0007] Optionally, an elastic plate is provided in the driven hole. The elastic plates are symmetrically arranged on the left and right sides of the box side wall and are connected to each other by springs. One of the elastic plates is connected to the elastic shaft.

[0008] Optionally, the tension adjustment device includes a base, a crank, and a roller. The horizontal section of the crank is connected to the base via a pivot. The roller is installed at the end of the vertical section of the crank. A second flexible hinge is installed on the surface of the horizontal section of the crank, and the other end of the second flexible hinge is connected to the top surface of the housing.

[0009] Optionally, the active roller is arrayed with silicone pads.

[0010] Optionally, guide rails are installed on the left and right inner side walls of the housing, with the guide rail tracks aligned with the interval between the driving roller and the driven roller, and the two ends of the guide rails being set as openings.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] In this invention, after the material enters the guiding mechanism, it is guided by the guide rail to the space between the active roller and the driven roller. If the material deviates, a lateral force will be generated. For example, if the left edge of the material deviates and hits the left guide rail, a rightward thrust will be generated. The material's contact with the guide rail generates a lateral thrust, and the material is in close contact with the surface of the active roller. The friction between the material and the surface of the active roller transmits the thrust to the active roller shaft. The active roller shaft is connected to the left and right walls through a first flexible hinge. At this time, the shaft is subjected to a rightward torque. When the torque is applied, the left first flexible hinge is compressed and the right flexible hinge is stretched, allowing the active roller to swing clockwise around the active shaft. The elastic deformation of the first flexible hinge generates a reverse torque. At this time, the right edge of the material is still fed normally, while the left edge is subjected to a rightward component force due to the tilt of the active roller. This component force pushes the left edge of the material to move to the right, offsetting the original leftward deviation. If the deviation is too large, the first flexible hinge reaches its maximum deformation. At this time, the elastic pad will prevent the active roller from swinging excessively, preventing the material from tearing.

[0013] In this invention, the roller abuts against the material. When the material tension is too high, the roller height increases, causing the crank to rotate, which deforms the second flexible hinge and generates a pulling force. This, in turn, causes the roller to generate downward pressure, achieving automatic tension balance and preventing material breakage.

[0014] The segmented design of the elastic shaft in this invention allows for elastic deformation during sudden tension changes. Compared to traditional rigid shafts, this reduces tension impact and prevents tearing or registration errors in printed materials caused by sudden tension increases. The deformation of the elastic shaft can automatically match the material stiffness for materials of different hardness. When thin films pass through, the elastic shaft deforms more, providing buffer protection. When thick paper passes through, the deformation is smaller, ensuring sufficient contact pressure. No manual parameter adjustment is required when switching materials. The flexible connection of the three elastic shaft segments allows the driven wheel to automatically adjust its coaxiality within a certain range, compensating for shaft eccentricity caused by installation errors or long-term use, and avoiding material misalignment caused by eccentricity in traditional rigid shafts.

[0015] This invention employs a purely mechanical mechanism, resulting in low cost and simple maintenance, and a low failure rate in dusty and humid environments. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model;

[0017] Figure 2 This is a front view schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the driving roller and the driven roller in this utility model;

[0019] Figure 4 This is a schematic diagram of the tension adjustment device in this utility model;

[0020] In the picture:

[0021] 1. Housing; 2. Driven roller; 3. Driven roller; 4. Tension adjustment device; 5. Driven hole; 6. Driven shaft; 7. Counterweight; 8. Elastic shaft; 9. Driven hole; 10. Connecting seat; 11. Mounting seat; 12. First flexible hinge; 13. Elastic pad; 14. Elastic plate; 15. Spring; 16. Base; 17. Crank rod; 18. Roller; 19. Rotating shaft; 20. Silicone pad; 21. Guide rail; 22. Second flexible hinge. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4As shown, this utility model provides a guiding mechanism for printing packaging and decoration materials. It is characterized by comprising a housing 1, a driving roller 2, a driven roller 3, and a tension adjusting device 4. The housing 1 is rectangular. The driving roller 2, driven roller 3, and tension adjusting device 4 are all installed inside the housing 1. Driving holes 5 are symmetrically arranged on the left and right side walls of the housing 1. The driving roller 2 is cylindrical and positioned near the top surface of the housing 1. The circular surfaces of the driving roller 2 face the driving holes 5. Driving shafts 6 are arranged on both sides of the driving roller 2, passing through the driving holes 5, and counterweights 7 are connected to both ends of the driving shafts 6. 7 is located on the outside of the housing 1. The driven roller 3 is located below the driving roller 2 and close to the bottom surface of the housing 1. The driven roller 3 is segmented and connected in sections. Multiple driven rollers 3 are connected together by an elastic shaft 8. Driven holes 9 are symmetrically arranged on the left and right side walls of the housing 1. The driven holes 9 are directly opposite the driven roller 3 and the elastic shaft 8 and are fixed to the housing 1 by a connecting seat 10. The connecting seat 10 is symmetrically installed on the inside and outside of the housing 1 according to the left and right side walls of the housing 1. The tension adjustment device 4 is fixed on the front or rear edge of the housing 1. The bottom height of the tension adjustment device 4 is consistent with the height of the interval between the driven roller 3 and the driving roller 2.

[0024] Specifically, the segmented design of the elastic shaft 8 in this invention allows for elastic deformation during sudden tension changes. Compared to traditional rigid shafts, this reduces tension impact and avoids tearing of printed materials or registration errors caused by sudden increases in tension. For materials of different hardness, the deformation of the elastic shaft 8 can automatically match the material stiffness. When thin films pass through, the elastic shaft 8 deforms more, providing buffer protection. When thick paper passes through, the deformation is smaller, ensuring sufficient contact pressure. No manual parameter adjustment is required when switching materials. The flexible connection of the three segments of the elastic shaft 8 allows the driven wheel to automatically adjust its coaxiality within a certain range, compensating for shaft eccentricity caused by installation errors or long-term use, and avoiding material misalignment caused by eccentricity in traditional rigid shafts.

[0025] Specifically, this utility model adopts a purely mechanical mechanism, which is low in cost and simple to maintain, and has a low failure rate in dusty and humid environments.

[0026] An installation seat 11 is provided in the active hole 5. The installation seat 11 is annular and fits the active hole 5. A first flexible hinge 12 is provided inside the installation seat 11. The active shaft 6 passes through both ends of the first flexible hinge 12. The first flexible hinge 12 is V-shaped, and an elastic pad 13 is provided at the hollowed-out part where the first flexible hinge 12 connects to the active hole 5.

[0027] Specifically, in this invention, after the material enters the guiding mechanism, it is guided by the guide rail 21 to the space between the driving roller 2 and the driven roller. If the material deviates, a lateral force will be generated. For example, if the left edge of the material deviates and hits the left guide rail 21, a rightward thrust will be generated. The material is in contact with the guide rail 21, generating a lateral thrust. The material is in close contact with the surface of the driving roller 2, and the friction between the material and the surface of the driving roller 2 transmits the thrust to the shaft of the driving roller 2. The shaft of the driving roller 2 is connected to the left and right walls through the first flexible hinge 12. At this time, the shaft is subjected to a rightward torque. When torque is applied, the first flexible hinge 12 on the left is compressed and the flexible hinge on the right is stretched, allowing the active roller 2 to swing clockwise around the active shaft. The elastic deformation of the first flexible hinge 12 generates a reverse torque. At this time, the right edge of the material is still fed normally, while the left edge is subjected to a rightward component force due to the tilt of the active roller 2. This component force pushes the left edge of the material to move to the right, offsetting the original leftward offset. If the offset is too large, the first flexible hinge 12 reaches its maximum deformation. At this time, the elastic pad 13 will prevent the active roller 2 from swinging excessively, preventing the material from tearing.

[0028] An elastic plate 14 is provided in the driven hole 9. The elastic plates 14 are symmetrically arranged on the left and right sides of the side wall of the housing 1. The elastic plates 14 are connected to each other by springs 15. One of the elastic plates 14 is connected to the elastic shaft 8.

[0029] Specifically, spring 15 can make the driven roller 3 more efficient in correcting its direction.

[0030] The tension adjustment device 4 includes a base 16, a crank 17 and a roller 18. The horizontal section of the crank 17 is connected to the base 16 via a rotating shaft 19. The roller 18 is installed at the end of the vertical section of the crank 17. A second flexible hinge 22 is installed on the surface of the horizontal section of the crank 17. The other end of the second flexible hinge 22 is connected to the top surface of the housing 1.

[0031] Specifically, in this utility model, the roller 18 abuts against the material. When the material tension is too high, the height of the roller 18 increases, causing the crank 17 to rotate, which deforms the second flexible hinge 22 and generates a pulling force. This causes the roller 18 to generate downward pressure, achieving automatic tension balance and preventing material breakage.

[0032] The active roller 2 is provided with an array of silicone pads 20.

[0033] Guide rails 21 are installed on the left and right inner side walls of the housing 1. The guide rails 21 are aligned with the gap between the driving roller 2 and the driven roller 3. Both ends of the guide rails 21 are set as openings.

[0034] The working principle and usage process of this utility model are as follows: When the material enters the guiding mechanism, it is guided by the guide rail 21 to the space between the driving roller 2 and the driven roller. If the material deviates, a lateral force will be generated. For example, if the left edge of the material deviates and hits the left guide rail 21, a rightward thrust will be generated. The material is in contact with the guide rail 21, generating a lateral thrust. The material is in close contact with the surface of the driving roller 2, and the friction between the material and the surface of the driving roller 2 transmits the thrust to the shaft of the driving roller 2. The shaft of the driving roller 2 is connected to the left and right walls through the first flexible hinge 12. At this time, the shaft is subjected to a rightward torque. When the torque is applied, the left first flexible hinge 12 is compressed and the right flexible hinge is stretched, allowing the driving roller 2 to rotate around the driving roller 2. The shaft swings clockwise; the elastic deformation of the first flexible hinge 12 generates a reverse torque. At this time, the right edge of the material is still fed normally, while the left edge is subjected to a rightward component force due to the tilt of the active roller 2. This component force pushes the left edge of the material to move to the right, offsetting the original leftward offset. If the offset is too large, the first flexible hinge 12 reaches its maximum deformation. At this time, the elastic pad 13 will prevent the active roller 2 from swinging excessively, preventing the material from tearing. In this utility model, the roller 18 abuts against the material. When the material tension is too large, the height of the roller 18 increases, driving the crank 17 to rotate, causing the second flexible hinge 22 to deform and generate a pulling force, which in turn causes the roller 18 to generate downward pressure, achieving automatic tension balance and preventing material breakage.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guiding mechanism for printing packaging and decoration printed materials, characterized in that, The assembly includes a housing (1), a driving roller (2), a driven roller (3), and a tension adjusting device (4). The housing (1) is rectangular. The driving roller (2), driven roller (3), and tension adjusting device (4) are all installed inside the housing (1). Driving holes (5) are symmetrically arranged on the left and right side walls of the housing (1). The driving roller (2) is cylindrical and located near the top surface of the housing (1). The circular surfaces of the driving roller (2) face the driving holes (5). Driving shafts (6) are arranged on both sides of the driving roller (2). The driving shafts (6) pass through the driving holes (5), and counterweights (7) are connected to both ends of the driving shafts (6). The counterweights (7) are located on the outside of the housing (1). The driven roller... Roller (3) is located below the active roller (2) and close to the bottom of the box (1). The driven roller (3) is segmented and connected. Multiple driven rollers (3) are connected together by an elastic shaft (8). Driven holes (9) are symmetrically arranged on the left and right side walls of the box (1). The driven holes (9) are directly opposite the driven roller (3) and the elastic shaft (8) and are fixed to the box (1) by a connecting seat (10). The connecting seat (10) is symmetrically installed on the inside and outside of the box (1) according to the side wall of the box (1). The tension adjustment device (4) is fixed on the front or rear edge of the box (1). The bottom height of the tension adjustment device (4) is consistent with the height of the interval between the driven roller (3) and the active roller (2).

2. The guiding mechanism for printing packaging and decoration materials according to claim 1, characterized in that, An installation seat (11) is provided in the active hole (5). The installation seat (11) is annular and fits the active hole (5). A first flexible hinge (12) is provided inside the installation seat (11). The active shaft (6) passes through both ends of the first flexible hinge (12). The first flexible hinge (12) is V-shaped. An elastic pad (13) is provided at the hollowed-out part where the first flexible hinge (12) connects to the active hole (5).

3. The guiding mechanism for printing packaging and decoration materials according to claim 1, characterized in that, An elastic plate (14) is provided in the driven hole (9). The elastic plates (14) are symmetrically arranged on the left and right sides of the side wall of the box (1). The elastic plates (14) are connected to each other by springs (15). One of the elastic plates (14) is connected to the elastic shaft (8).

4. The guiding mechanism for printing packaging and decoration materials according to claim 1, characterized in that, The tension adjustment device (4) includes a base (16), a crank (17) and a roller (18). The horizontal section of the crank (17) is connected to the base (16) via a pivot (19). The roller (18) is installed at the end of the vertical section of the crank (17). A second flexible hinge (22) is installed on the surface of the horizontal section of the crank (17). The other end of the second flexible hinge (22) is connected to the top surface of the housing (1).

5. A guiding mechanism for printing packaging and decoration materials according to claim 1, characterized in that, The active roller (2) is provided with an array of silicone pads (20).

6. The guiding mechanism for printing packaging and decoration materials according to claim 1, characterized in that, Guide rails (21) are installed on the left and right inner walls of the box (1). The guide rails (21) are aligned with the interval between the driving roller (2) and the driven roller (3). Both ends of the guide rails (21) are set as openings.

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