Adjusting mechanism for printing roller of printing machine

Abstract

The utility model provides a printing machine printing roller adjusting mechanism which comprises a conveying mechanism, a plurality of rotating conveying rollers are arranged in the conveying mechanism, supporting seats are fixedly arranged on the two sides of the conveying mechanism, a printing roller is arranged between the two supporting seats, and the two ends of the printing roller abut against the interiors of the supporting seats through bearing seats and slide up and down. A fixed plate is fixedly arranged at the top of the supporting seat, a rotating gear is arranged on the fixed plate, a ruler strip meshed with the gear is arranged on one side of the gear, and the end part of the ruler strip is fixed on the bearing seat; guide plates moving relatively are arranged on the two sides below the printing roller and arranged between the printing roller and the conveying roller. And the adaptability of the printing machine to cartons with different thicknesses and widths is improved. By accurately adjusting the distance between the printing roller and the conveying roller and the width position of the guide plate, diversified carton sizes can be quickly adapted, the production preparation time and the shutdown adjustment frequency are reduced, and the production flexibility and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of carton printing, in particular to a printing roller adjusting mechanism of a printing press. Background Art

[0002] One of the main challenges faced by carton printing machines during the printing process is to quickly and accurately adjust cartons of different sizes and thicknesses to ensure printing quality and production efficiency. The traditional adjustment method requires disassembling and manually adjusting each component, which is often cumbersome, time-consuming and difficult to achieve high precision. Especially when it is necessary to frequently switch to produce cartons of different specifications, the problems of low efficiency and inaccurate adjustment are particularly prominent. Utility Model Content

[0003] The main purpose of the utility model is to provide a printing roller adjustment mechanism for a printing press to solve the problems in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: comprising a conveying mechanism, in which a plurality of rotating conveying rollers are arranged, support seats are fixedly arranged on both sides of the conveying mechanism, a printing roller is arranged between the two support seats, and both ends of the printing roller abut against the support seats through bearing seats to slide up and down;

[0005] A fixed plate is fixed on the top of the support seat, a rotating gear is arranged on the fixed plate, a ruler bar meshing with the gear is arranged on one side of the gear, and the end of the ruler bar is fixed on the bearing seat;

[0006] Guide plates which can move relatively are arranged on both sides below the printing roller, and the guide plates are arranged between the printing roller and the conveying roller.

[0007] Preferably, a rotating shaft is provided between the two supporting seats, two ends of the rotating shaft are supported on the fixed plate for rotation through bearings, and gears are fixed on the two ends of the rotating shaft.

[0008] Preferably, a first hand wheel is fixedly provided at the end of the rotating shaft, and a locking mechanism is provided between the end of the rotating shaft and the fixed plate for locking the rotating shaft.

[0009] Preferably, side ear plates are fixedly provided on both sides of the support seat, guide columns are fixedly provided between the side ear plates on the support seats on both sides, and the guide plates slide on the guide columns through guide sleeves.

[0010] Preferably, a groove is provided in the middle of the guide plate, the printing roller and the conveying roller are located in the groove, and the bottom of the guide plate is located below the conveying roller.

[0011] Preferably, a bidirectional screw rod is provided between the guide plates on both sides, the bottom of the guide plate is threadedly connected to the bidirectional screw rod through a thread sleeve, and both ends of the bidirectional screw rod are supported on the support seat for rotation through bearings.

[0012] Preferably, a second hand wheel is fixedly provided at the end of the bidirectional screw rod, and a locking mechanism is provided between the bidirectional screw rod and the support seat for locking the bidirectional screw rod.

[0013] The utility model provides a printing roller adjustment mechanism for a printing press, which has the following beneficial effects:

[0014] 1. Improve the adaptability of the printing press to cartons of different thicknesses and widths. By accurately adjusting the distance between the printing roller and the conveying roller, as well as the width position of the guide plate, it can quickly adapt to a variety of carton sizes, reducing production preparation time and the number of downtime adjustments, and improving production flexibility and efficiency.

[0015] 2. The precise transmission mechanism of gear and ruler linkage, bidirectional lead screw and wire sleeve is adopted to ensure the high precision of the adjustment of printing roller and guide plate, reduce the printing quality problems caused by adjustment errors, and improve the consistency and professionalism of printing quality.

[0016] 3. The setting of the first hand wheel and the second hand wheel simplifies the adjustment operation of the printing roller height and the guide plate width. No professional tools are required, which lowers the operation threshold. Even non-professionals can quickly get started, improving the convenience of operation and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a side view of the overall structure of the utility model;

[0019] Figure 2 It is a top view of the overall structure of the utility model;

[0020] Figure 3 This is a structural view of the guide plate of the utility model;

[0021] In the figure: conveying mechanism 1; support seat 2; guide plate 3; guide sleeve 301; thread sleeve 302; fixed plate 4; ruler 5; first hand wheel 6; rotating shaft 7; printing roller 8; bearing seat 9; side ear plate 10; conveying roller 11; bidirectional screw rod 12; second hand wheel 13; gear 14; guide column 15. DETAILED DESCRIPTION

[0022] like Figures 1 to 3 As shown, a printing roller adjustment mechanism of a printing press comprises a conveying mechanism 1, in which a plurality of rotating conveying rollers 11 are arranged, support seats 2 are fixedly arranged on both sides of the conveying mechanism 1, a printing roller 8 is arranged between the two support seats 2, and both ends of the printing roller 8 abut against the support seats 2 and slide up and down through bearing seats 9;

[0023] A fixing plate 4 is fixed on the top of the support seat 2, and a rotating gear 14 is provided on the fixing plate 4. A ruler 5 meshing with the gear 14 is provided on one side of the gear 14, and the end of the ruler 5 is fixed on the bearing seat 9;

[0024] A relatively movable guide plate 3 is provided on both sides below the printing roller 8, and the guide plate 3 is provided between the printing roller 8 and the conveying roller 11. By rotating the driving gear 14, the ruler 5 can drive the bearing seat 9 to slide up and down in the support seat 2, thereby adjusting the distance between the printing roller 8 and the conveying roller 11 to adapt to cartons of different thicknesses; at the same time, the guide plates 3 on both sides can also be adjusted to adapt to cartons of different widths.

[0025] The conveying mechanism 1 is the basis of the entire system, and the multiple conveying rollers 11 thereon are responsible for the continuous conveyance of cartons or papers, providing a stable material flow for the printing process.

[0026] The support seat 2 provides a stable installation foundation for the printing roller 8, and the two ends of the printing roller can slide up and down through the bearing seat 9, allowing the height of the printing roller to be adjusted.

[0027] A rotating gear 14 is installed on the fixed plate 4 fixed to the top of the support seat. When the gear rotates, the ruler 5 meshing with it moves accordingly. One end of the ruler is fixed on the bearing seat 9, so the movement of the ruler directly causes the bearing seat and the printing roller to slide up and down, realizing the precise adjustment of the height of the printing roller to adapt to cartons of different thicknesses.

[0028] The guide plates 3 arranged on both sides below the printing roller can move relatively. They are located between the printing roller and the conveying roller. Their main function is to guide the carton to align correctly with the printing position. By adjusting the position of the guide plates, it can adapt to cartons of different widths and ensure accurate alignment of the printed pattern.

[0029] Through the above design, the adjustment mechanism can not only adjust the distance between the printing roller and the conveying roller to adapt to materials of different thicknesses, but also adapt to cartons of different widths by adjusting the guide plate, which greatly improves the versatility and production efficiency of the equipment and reduces the time for complex mechanical adjustments due to changes in product specifications.

[0030] Preferably, a rotating shaft 7 is provided between the two supporting seats 2, and both ends of the rotating shaft 7 are rotated against the fixed plate 4 through bearings, and gears 14 are fixed to both ends of the rotating shaft 7. By driving the rotating shaft 7 to rotate, the gears 14 at both ends are driven to rotate synchronously, so that both ends of the printing roller 8 slide at the same time, ensuring that the overall horizontal sliding adjustment is made.

[0031] The rotating shaft 7 added between the two supporting seats 2 is mounted on the fixed plate 4 through a bearing, which not only provides a solid rotation center for the gear 14, but also ensures the stability and accuracy of the rotating shaft during rotation.

[0032] Gears 14 are fixed to both ends of the shaft 7, which means that when the shaft rotates, the gears on both sides will rotate synchronously. Ensuring that both ends of the printing roller 8 can slide up and down at the same time and maintain its horizontal state is crucial to maintaining printing quality. Even when adjusting the height of the printing roller, it can ensure uniform contact between the printing surface and the carton surface, avoiding printing deviation caused by inconsistent adjustment.

[0033] By driving the rotation of the rotating shaft 7, the operator can accurately control the up and down position of the printing roller to adapt to cartons of different thicknesses. At the same time, due to the independent adjustment capability of the guide plate 3, the mechanism can quickly adapt to changes in thickness or width of the cartons, reducing changeover time and improving production efficiency.

[0034] Preferably, a first hand wheel 6 is fixed to the end of the rotating shaft 7, and a locking mechanism is provided between the end of the rotating shaft 7 and the fixing plate 4 for locking the rotating shaft 7. The locking mechanism is a clamping structure, which is locked by bolts to clamp the rotating shaft 7, thereby rotating and fixing it.

[0035] The first hand wheel 6 fixed at the end of the rotating shaft 7 is used as a manual adjustment device, so that the operator can directly rotate the hand wheel to drive the rotating shaft 7 to rotate, thereby controlling the up and down sliding of the printing roller 8. The use of the hand wheel simplifies the operation steps and reduces the difficulty of operation. The height of the printing roller can be quickly adjusted without additional tools.

[0036] The locking mechanism is designed between the end of the shaft 7 and the fixed plate 4, and adopts a clamping structure. By tightening the bolt, the clamp will tightly hold the shaft and lock it firmly. This design ensures that after the printing roller position is adjusted, the current setting can be stably maintained. Even if there is a large resistance or vibration during the printing process, the printing roller will not move unexpectedly, ensuring the printing quality and production safety.

[0037] Preferably, side ear plates 10 are fixedly provided on both sides of the support seat 2, and guide posts 15 are fixedly provided between the side ear plates 10 on the support seats 2 on both sides, and the guide plates 3 slide on the guide posts 15 through guide sleeves 301. The guide plates 3 on both sides slide relative to each other more smoothly and reliably.

[0038] The side ear plates 10 added on both sides of the support base 2 not only provide additional stability and rigidity for the entire structure, but also provide a stable base for the installation of the guide column 15, ensuring the stability of the guide system when it is subjected to the sliding pressure of the guide plate.

[0039] The guide column 15 is fixed between the side ear plates 10 on the support seats 2 on both sides, forming a fixed longitudinal axis, providing a precise track for the sliding of the guide plate 3. This design ensures that the guide plate can move smoothly along a straight path during adjustment, avoiding unnecessary deviation or shaking.

[0040] The guide plate 3 is sleeved on the guide column 15 through the guide sleeve 301. The existence of the guide sleeve reduces direct metal friction, reduces wear, and improves the smoothness of sliding. Such a design not only protects the guide column and the guide plate, but also ensures the adjustment accuracy and reliability under long-term use.

[0041] Preferably, a groove is provided in the middle of the guide plate 3, the printing roller 8 and the conveying roller 11 are located in the groove, and the bottom of the guide plate 3 is located below the conveying roller 11. The design of the groove does not affect the relative movement adjustment between the printing roller 8 and the conveying roller 11, and the bottom of the guide plate 3 bypasses from below the conveying roller 11, so that the two sides of the guide plate 3 are located at both ends of the conveying roller 11.

[0042] The design of the groove cleverly avoids direct obstruction of the printing roller 8 and the conveying roller 11, ensuring that the guide plate 3 can be closely close to and assist in the positioning and conveying of cartons or paper without interfering with the normal operation of these two key components. This layout makes full use of space, maintains a compact mechanical structure, and simplifies the cleaning and maintenance of the equipment.

[0043] The groove allows the guide plate 3 to be closer to the running track of the carton, especially when the width of the carton changes. This design helps to guide the carton through the printing area more accurately, reduce the carton offset or misalignment caused by inaccurate guidance, and ensure the alignment of the printed pattern and the printing quality.

[0044] Although the groove design does not affect the relative adjustment between the printing roller and the conveying roller, the bottom of the guide plate passes under the conveying roller, which actually increases the freedom of adjustment of the guide plate in the width direction. This means that even if the diameter of the conveying roller 11 changes or needs to be replaced, the guide plate 3 can still adapt flexibly and maintain its effective guiding function, further improving the versatility and flexibility of the device.

[0045] Preferably, a bidirectional screw 12 is provided between the guide plates 3 on both sides, the bottom of the guide plate 3 is threadedly connected to the bidirectional screw 12 through a thread sleeve 302, and the two ends of the bidirectional screw 12 are rotated against the support seat 2 through bearings. The threads at the two ends of the bidirectional screw 12 rotate in opposite directions, and the rotation of the bidirectional screw 12 can drive the guide plates 3 on both sides to move relative to each other.

[0046] By designing that the threads at both ends of the bidirectional lead screw 12 rotate in opposite directions, when the lead screw rotates, the guide plates 3 on both sides can move relative to each other at the same speed and distance, ensuring that the two sides can be completely synchronized even when adjusting the width, which is crucial for maintaining the center alignment of the carton during the printing process.

[0047] Due to its self-locking characteristics, the screw drive can maintain the current position without external power, which means that once adjusted to the appropriate position, the guide plate can remain there stably, ensuring the accuracy and stability of the adjustment, which is very suitable for occasions that require fine adjustment.

[0048] Compared with traditional manual adjustment, the use of the bidirectional screw 12 to adjust the guide plate is simpler and faster. The operator only needs to rotate the screw to achieve parallel sliding of the guide plate, which greatly reduces the difficulty of operation and improves work efficiency.

[0049] Both ends of the bidirectional screw rod 12 are mounted on the support seat 2 through bearings, which not only ensures the smooth rotation of the screw rod, but also disperses the lateral force generated when the guide plate moves, thereby enhancing the stability and durability of the entire adjustment mechanism.

[0050] Preferably, a second hand wheel 13 is fixedly provided at the end of the bidirectional screw rod 12 , and a locking mechanism is provided between the bidirectional screw rod 12 and the support seat 2 for locking the bidirectional screw rod 12 .

[0051] By fixing the second hand wheel 13 at the end of the bidirectional screw rod 12, the operator can easily rotate the screw rod directly with the hand wheel to achieve rapid adjustment of the guide plate 3. This method is intuitive, labor-saving, does not require special tools, and greatly improves the convenience of operation.

[0052] The locking mechanism between the bidirectional screw 12 and the support seat 2 is similar to the aforementioned clamping structure or other reliable locking mechanisms, which can firmly fix the screw after adjustment to prevent accidental movement caused by external force or vibration. This not only ensures the stability and reliability of the adjustment results, but also ensures the safety of the production process, avoiding printing quality problems or safety hazards caused by unexpected changes in equipment components.

[0053] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A printing roller adjustment mechanism for a printing press, characterized in that: The conveying mechanism (1) comprises a conveying mechanism (1), wherein a plurality of rotating conveying rollers (11) are provided in the conveying mechanism (1), support seats (2) are fixedly provided on both sides of the conveying mechanism (1), a printing roller (8) is provided between the two support seats (2), and both ends of the printing roller (8) are supported in the support seats (2) through bearing seats (9) to slide up and down; A fixing plate (4) is fixedly provided on the top of the support seat (2), a rotating gear (14) is provided on the fixing plate (4), a ruler (5) meshing with the gear (14) is provided on one side of the gear (14), and an end of the ruler (5) is fixed on the bearing seat (9); Guide plates (3) that can move relatively are provided on both sides below the printing roller (8), and the guide plates (3) are provided between the printing roller (8) and the conveying roller (11).

2. According to claim 1, a printing roller adjustment mechanism for a printing press is characterized in that: A rotating shaft (7) is provided between the two support seats (2), and both ends of the rotating shaft (7) are supported on the fixed plate (4) through bearings for rotation, and gears (14) are fixed on both ends of the rotating shaft (7).

3. The printing roller adjustment mechanism of a printing press according to claim 2, characterized in that: A first hand wheel (6) is fixedly arranged at the end of the rotating shaft (7), and a locking mechanism is arranged between the end of the rotating shaft (7) and the fixed plate (4) for locking the rotating shaft (7).

4. The printing roller adjustment mechanism of a printing press according to claim 1, characterized in that: Side ear plates (10) are fixedly provided on both sides of the support seat (2), and guide columns (15) are fixedly provided between the side ear plates (10) on the support seats (2) on both sides. The guide plate (3) is slidably sleeved on the guide column (15) via a guide sleeve (301).

5. The printing roller adjustment mechanism of a printing press according to claim 1, characterized in that: A groove is provided in the middle of the guide plate (3), the printing roller (8) and the conveying roller (11) are located in the groove, and the bottom of the guide plate (3) is located below the conveying roller (11).

6. The printing roller adjustment mechanism of a printing press according to claim 1, characterized in that: A bidirectional screw rod (12) is provided between the guide plates (3) on both sides. The bottom of the guide plate (3) is threadedly connected to the bidirectional screw rod (12) via a thread sleeve (302). Both ends of the bidirectional screw rod (12) are supported on the support seat (2) via bearings for rotation.

7. The printing roller adjustment mechanism of a printing press according to claim 6, characterized in that: A second hand wheel (13) is fixedly provided at the end of the bidirectional screw rod (12), and a locking mechanism is provided between the bidirectional screw rod (12) and the support seat (2) for locking the bidirectional screw rod (12).

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