Assembly frame mechanism of intaglio printing roller power transmission part
By adopting the independent transmission and anti-fog sleeve design of servo motors in gravure printing equipment, the mechanical coupling transmission error and ink pollution problems are solved, and higher printing accuracy and mechanical life are achieved.
Patent Information
- Application Number
- CN202420996320.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-09
AI Technical Summary
In existing gravure printing equipment, there are problems such as large errors, high noise, and ink pollution, resulting in drying and condensation of the bearing lubricating engine oil, damage to the oil seal, and leading to transmission leakage.
The servo motor is used to independently drive, the gear reducer is cancelled, the movable motor base is used for horizontal movement, and the anti-fouling sleeve is added to the bearings and oil seals and the inner coil area are widened to solve pollution and lubrication problems.
Eliminates mechanical transmission errors and noise, ensures clean and retracted output shaft, protects oil seals, and extends the service life of bearings and machinery.
Smart Images
Figure CN222178975U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of printing equipment and discloses a frame assembly mechanism for a power transmission part of a gravure printing roller. Background Art
[0002] The existing and early applications are all mechanical couplings that transmit the rotation of the gravure roller through the frequency conversion motor digital control and the reduction gear box spindle for plain printing. Due to the many links in the mechanical coupling transmission and the gear box speed transmission, the whole set of printing accuracy errors is large, the scrap rate is high, there are many transmission links, and the transmission noise is large, which is a technical backwardness.
[0003] On the other hand, the output shaft, which is under the greatest pressure during the printing process, will be contaminated by ink, because the transmission fixed main and secondary shafts have the function of lifting and retracting transmission clamping. The power output and transmission gearbox with telescopic function contain bearing lubricating oil, and the oil relies on oil seals to prevent oil leakage. However, the transmission main and secondary shafts will be contaminated by ink during high-speed printing, and the transmission clamping main and secondary shafts will be contaminated by ink due to long working hours, which will dry and condense on the transmission shaft. Because the main shaft needs to be retracted to take the plate when printing is completed, the main and secondary shafts will retract when the ink on the transmission main shaft is dry, which will damage the colloid oil seal. Therefore, the new machine will cause oil leakage in a short time. Utility Model Content
[0004] To solve the above problems, the utility model provides a frame assembly mechanism for the power transmission part of the gravure printing roller, which changes the traditional mechanical coupling synchronous transmission into an independent transmission of a servo motor, eliminates the gear reduction box, and uses a movable motor base for horizontal movement, eliminating most of the errors and noise of the mechanical transmission.
[0005] The technical solution provided by the utility model is as follows:
[0006] A frame assembly mechanism of a gravure printing roller power transmission part, comprising a frame, a base fixed on the frame, a motor base horizontally slidably arranged on the base, and an output shaft, wherein the motor base is provided with a motor, the output shaft is rotatably arranged in the base around its own axis, one end of the output shaft is provided with a main head, and the other end of the output shaft is arranged in the motor base and connected to the output end of the motor;
[0007] A telescopic cylinder is arranged at the bottom of the base, and an output end of the telescopic cylinder is connected to the motor seat through a connecting plate.
[0008] In some embodiments, a bearing is disposed in the base, the output shaft slides horizontally in the bearing, and the inner ring width of the bearing is greater than the outer ring width.
[0009] In some embodiments, an oil seal is provided on the outer side of the output shaft, and the oil seal includes a skeleton oil seal and an anti-pollution sleeve provided on the outer side of the skeleton oil seal, and the anti-pollution sleeve is precisely transitionally matched with the output shaft through a pressure cover on the outer side thereof.
[0010] In some embodiments, the anti-pollution sleeve is a nonferrous metal ring, the outer side of the anti-pollution sleeve contacts the output shaft at a knife edge surface, and the knife edge surface is precisely transitionally matched with the output shaft.
[0011] In some embodiments, a slide rail is provided at the bottom of the base, and a slider is provided at the bottom of the motor seat. The motor seat cooperates with the slider through the slide rail and drives the output shaft to slide horizontally under the action of the telescopic cylinder.
[0012] In some embodiments, the motor is horizontally fixed on the motor base, and the output shaft is connected to the motor via a coupling.
[0013] In some embodiments, the telescopic cylinder is horizontally fixed to the bottom of the base, one end of the connecting plate is fixed to the bottom of the motor seat, and the other end is fixed to the output end of the telescopic cylinder.
[0014] In summary, the beneficial effects of the utility model are as follows:
[0015] (1) The utility model changes the traditional mechanical coupling synchronous transmission into a servo motor independent transmission, eliminates the gear reduction box, and uses a movable motor base for horizontal movement, thereby eliminating most of the errors and noises of mechanical transmission.
[0016] (2) The utility model provides an anti-fouling sleeve on one side of the skeleton oil seal. The anti-fouling sleeve has a knife-edge surface. When the output shaft is extended or retracted, the knife-edge surface will automatically remove the condensed pollutants on the output shaft, thereby ensuring that the output shaft is retracted into the oil tank cleanly, protecting the gel skeleton oil seal, and ensuring the quality and service life of the machine.
[0017] (3) The utility model widens the bearing support inner volume area, changes the standardized bearing inner printing width, increases the force-bearing surface, solves the looseness problem by dispersing the force points, and increases the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 This is a side view of the structure of the utility model;
[0020] Figure 3 for Figure 1 Enlarged view of point A in the middle;
[0021] Figure 4 This is a schematic diagram of the structure of the custom-made bearing of the utility model.
[0022] The reference numerals are as follows:
[0023] 1. Frame; 2. Base; 3. Motor seat; 4. Output shaft; 5. Motor; 6. Main head; 7. Telescopic cylinder; 8. Connecting plate; 9. Bushing; 10. Oil seal; 101. Skeleton oil seal; 102. Anti-fouling sleeve; 103. Gland; 11. Slide rail; 12. Slider; 13. Coupling. DETAILED DESCRIPTION
[0024] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0025] like Figure 1-3 As shown, a frame assembly mechanism of a gravure printing roller power transmission part includes a frame 1, a base 2 fixed on the frame 1, a motor base 3 horizontally slidably arranged on the base 2, and an output shaft 4, a motor 5 is arranged on the motor base 3, the output shaft 4 can be rotatably arranged in the base 2 around its own axis, one end of the output shaft 4 is provided with a main head 6, the other end of the output shaft 4 is arranged in the motor base 3 and connected to the output end of the motor 5; a telescopic cylinder 7 is provided at the bottom of the base 2, and the output end of the telescopic cylinder 7 is connected to the motor base 3 through a connecting plate 8.
[0026] Specifically, the frame 1 is placed on the floor of the workshop, the base 2 is fixed on the frame 1, and a support frame can also be set at the bottom of the base 2. If the base 2 is placed too heavy, the frame 1 will be damaged. The motor 5 in this embodiment is a servo motor, which is directly fixed on the motor base 3 and connected to the output shaft 4 to drive it to rotate. The motor 5 slides horizontally to insert the main head 6 at the other end of the output shaft 4 into the printing roller, fix the printing roller, and realize the transmission of the power of the printing roller. The telescopic cylinder 7 in the utility model is a double-force cylinder. The bottom of the base 2 is provided with a slot. The connecting plate 8 passes through the slot to connect the output end of the telescopic cylinder 7 with the motor base 3. The telescopic cylinder 7 drives the motor base 3 to reciprocate along the predetermined track. This embodiment changes the traditional mechanical shaft-connected synchronous transmission into a servo motor independent transmission, and at the same time cancels the gear reduction box, uses the movable motor base 3 for horizontal movement, and eliminates most of the errors and noise of mechanical transmission.
[0027] In a preferred embodiment, a bearing 9 is provided in the base 2, and the output shaft 4 slides horizontally in the bearing 9. The inner ring width of the bearing 9 is greater than the outer ring width. The main and secondary top shafts of the hollow gravure rollers clamped on both sides of the gravure printing machine are prone to loosening due to the high pressure, causing the accuracy to affect the printing quality. In order to solve this bearing capacity problem, in this embodiment, the area of the inner volume supported by the bearing 9 is widened, the standardized bearing inner printing width is changed, the force surface is enlarged, and the force points are dispersed to solve the looseness problem and increase the service life of the bearing 9.
[0028] Furthermore, an oil seal 10 is provided between the sleeve 9 and the output shaft 4. The oil seal 10 is used to prevent the lubricating oil in the output shaft 4 and the sleeve 9 from overflowing. The oil seal 10 includes a skeleton oil seal 101 and an anti-pollution sleeve 102 provided on the outside of the skeleton oil seal 101. The anti-pollution sleeve 102 is precisely transitionally matched with the output shaft 4 through a pressure cover 103 on the outside thereof. The anti-pollution sleeve 102 is a non-ferrous metal ring. The contact between the outer side of the anti-pollution sleeve 102 and the output shaft 4 is a knife edge surface, and the knife edge surface is precisely transitionally matched with the output shaft 4.
[0029] Specifically, a retaining ring is provided on the outside of the skeleton oil seal 101 for fixing the skeleton oil seal 101. The utility model has developed and adopted a non-ferrous metal ring, which can be a movable roll with a knife edge surface made of aluminum, gold copper or stainless steel. The inner side of the movable roll is precisely transitionally matched with the output shaft 4. The anti-pollution sleeve 102 is axially fixed by the pressure cover 103, and the pressure cover 103 is fixed on the retaining ring by screws. When the output shaft 4 rotates, the anti-pollution sleeve 102 will rotate accordingly. When the output shaft 4 is extended and retracted, the anti-pollution sleeve 102 will remain stationary in place under the action of the pressure cover 103. When oil condenses on the output shaft 4, the knife edge surface will automatically remove the condensed pollutants on the output shaft 4, ensuring that the output shaft 4 is cleanly retracted into the oil tank, protecting the colloid skeleton oil seal 101, and ensuring the quality and service life of the machinery.
[0030] As another further optimized embodiment, a slide rail 11 is provided at the bottom of the base 2, and a slider 12 is provided at the bottom of the motor base 3. The motor base 3 cooperates with the slide rail 11 and the slider 12 to drive the output shaft 4 to slide horizontally under the action of the telescopic cylinder 7. The motor 5 is horizontally fixed on the motor base 3, and the output shaft 4 and the motor 5 are connected by a coupling 13. The telescopic cylinder 7 is horizontally fixed at the bottom of the base 2, one end of the connecting plate 8 is fixed to the bottom of the motor base 3, and the other end is fixed to the output end of the telescopic cylinder 7.
[0031] Specifically, the motor seat 3 slides on the base 2 through the slide rail 11 and the slider 12, making the sliding more stable. The slide rail 11 is set to a fixed length, which can ensure that the main head 6 can stably extend into the clamping printing roller.
[0032] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or methods mentioned in the embodiments.
[0033] It should also be noted that this document may provide demonstrations of parameters containing specific values, but these parameters do not need to be exactly equal to the corresponding values, but can be approximated to the corresponding values within an acceptable error tolerance or design constraint. Directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., are only referenced to the directions of the drawings and are not intended to limit the scope of protection of this application.
[0034] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. A frame assembly mechanism for a gravure printing roller power transmission unit, characterized in that: The invention comprises a frame (1), a base (2) fixed on the frame (1), a motor base (3) horizontally slidably arranged on the base (2), and an output shaft (4); a motor (5) is arranged on the motor base (3); the output shaft (4) is rotatably arranged in the base (2) around its own axis; a main head (6) is arranged at one end of the output shaft (4); the other end of the output shaft (4) is arranged in the motor base (3) and connected to the output end of the motor (5); A telescopic cylinder (7) is provided at the bottom of the base (2), and an output end of the telescopic cylinder (7) is connected to the motor base (3) via a connecting plate (8).
2. The assembly mechanism of the gravure printing roller power transmission unit according to claim 1, characterized in that: A bearing (9) is arranged inside the base (2), the output shaft (4) slides horizontally inside the bearing (9), and the inner ring width of the bearing (9) is greater than the outer ring width.
3. The assembly mechanism of the gravure printing roller power transmission unit according to claim 2, characterized in that: An oil seal (10) is provided on the outside of the output shaft (4), and the oil seal (10) comprises a skeleton oil seal (101) and an anti-pollution sleeve (102) provided on the outside of the skeleton oil seal (101), and the anti-pollution sleeve (102) is precisely transitionally matched with the output shaft (4) via a pressure cover (103) on the outside thereof.
4. The assembly mechanism of the gravure printing roller power transmission unit according to claim 3, characterized in that: The anti-pollution sleeve (102) is a nonferrous metal ring, and the contact point between the outer side of the anti-pollution sleeve (102) and the output shaft (4) is a knife edge surface, and the knife edge surface and the output shaft (4) are precisely transitionally matched.
5. The assembly mechanism of the gravure printing roller power transmission unit according to claim 1, characterized in that: A slide rail (11) is provided at the bottom of the base (2), and a slider (12) is provided at the bottom of the motor base (3). The motor base (3) cooperates with the slider (12) through the slide rail (11) and drives the output shaft (4) to slide horizontally under the action of the telescopic cylinder (7).
6. The assembly mechanism of the gravure printing roller power transmission unit according to claim 1, characterized in that: The motor (5) is horizontally fixed on the motor base (3), and the output shaft (4) and the motor (5) are transmission-connected via a coupling (13).
7. The assembly mechanism of the gravure printing roller power transmission unit according to claim 6, characterized in that: The telescopic cylinder (7) is horizontally fixed to the bottom of the base (2); one end of the connecting plate (8) is fixed to the bottom of the motor base (3), and the other end is fixed to the output end of the telescopic cylinder (7).