Transmission mechanism of elliptical digital printing machine

Abstract

This application relates to the field of elliptical digital printing machine technology, specifically a transmission mechanism for such a machine. The longitudinal drive unit includes a crossbeam mounting base and a first lead screw mechanism. A first slide rail is mounted longitudinally on the top of the frame, and the bottom of the crossbeam mounting base slides against the first slide rail via a first slider. The transverse drive unit includes a stator fixedly mounted on a steel beam. Anti-collision blocks and proximity switches are respectively mounted at both ends of the stator. A second slide rail is also mounted along the length of the steel beam, and the print head slides against the second slide rail via a second slider. The lifting assembly includes a third slide rail and a second lead screw mechanism. The second lead screw mechanism is drively connected to the print head to drive the third slider on the print head to rise and fall along the third slide rail. The print head slides against the steel beam via the second slider. This application improves the printing accuracy, operational stability, and operational flexibility of the elliptical digital printing machine, extends the equipment's service life, and meets the demands for high-precision, high-efficiency printing operations.

Description

Technical Field

[0001] This application relates to the field of oval digital printing machine technology, and in particular to a transmission mechanism for an oval digital printing machine. Background Technology

[0002] In practical applications of elliptical digital printing machines, the operational accuracy, stability, and adjustment flexibility of their transmission mechanisms directly affect printing quality and work efficiency. Existing elliptical digital printing machine transmission mechanisms generally suffer from poor straightness of the steel beam movement during longitudinal drive, slow response speed and insufficient positioning accuracy during lateral drive of the printing head. Furthermore, they lack convenient and effective structural designs for fine-tuning the steel beam installation angle, making it difficult to quickly calibrate the printing reference. In addition, the transmission stability of the printing head lifting mechanism is poor, prone to lifting jams or positioning deviations, and lacks a reliable limit protection structure, making it impossible to accurately control the lowest lifting position of the printing head. Excessive descent of the printing head can easily damage the printhead or printing media. These problems collectively restrict the improvement of printing accuracy and the extension of service life of elliptical digital printing machines, making it difficult to meet the demands of high-precision and high-efficiency printing operations. Utility Model Content

[0003] In order to overcome the problems existing in the prior art, this application provides a transmission mechanism for an oval digital printing machine.

[0004] The transmission mechanism of the oval digital printing machine provided in this application adopts the following technical solution: A transmission mechanism for an elliptical digital printing machine includes a longitudinal drive unit for driving a steel beam to move longitudinally along the frame. The longitudinal drive unit includes a crossbeam mounting base and a first screw mechanism for driving the crossbeam mounting base to move. A first slide rail is mounted longitudinally on the top of the frame, and the bottom of the crossbeam mounting base slides in cooperation with the first slide rail via a first slider. A transverse drive unit for driving a printing head to move along the length of the steel beam includes a stator fixedly mounted on the steel beam. Anti-collision blocks and proximity switches are respectively mounted on both ends of the stator. A second slide rail is also mounted on the steel beam along its length, and the printing head slides in cooperation with the second slide rail via a second slider. A lifting assembly for driving the printing head to lift vertically includes a third slide rail fixed on the second slider and a second screw mechanism. The second screw mechanism is driven to the printing head to drive the third slider on the printing head to lift vertically along the third slide rail. The printing head slides in cooperation with the steel beam via the second slider, and the lifting action is achieved through the lifting assembly.

[0005] Furthermore, the first lead screw mechanism includes an adjusting lead screw and a first lead screw nut fixedly installed at the center of the crossbeam mounting base. The first lead screw nut is screwed to the adjusting lead screw. Both ends of the adjusting lead screw are rotatably mounted on bearing seats. One end of the adjusting lead screw is connected to the output end of the adjusting motor via a coupling. The adjusting motor drives the adjusting lead screw to rotate, thereby causing the crossbeam mounting base to move longitudinally along the frame. The bottom of the steel beam is fixedly connected to the top of the crossbeam mounting base via crossbeam fine-tuning blocks. There are four crossbeam fine-tuning blocks, which are respectively set on the four sides of the top of the crossbeam mounting base. The crossbeam fine-tuning blocks are fixed to the crossbeam mounting base with bolts. The top of the crossbeam fine-tuning blocks has an elongated hole. A connecting block is fixed to the bottom of the steel beam. The connecting block is fixedly connected to the crossbeam fine-tuning block by bolts passing through the elongated hole, and the installation position of the steel beam can be adjusted through the elongated hole.

[0006] Furthermore, a motor coil is installed on the machine head, and the motor coil forms an electromagnetic drive with the stator on the steel beam to realize the lateral movement of the machine head. The side of the motor coil away from the stator is fixedly connected to the third slide rail. The second lead screw mechanism includes a lifting lead screw, a lifting upper bearing seat, and a lifting lower bearing seat. The two ends of the lifting lead screw are rotatably connected to the lifting upper bearing seat and the lifting lower bearing seat, respectively. The lifting lower bearing seat is fixedly installed on the motor coil. The lifting motor and the lifting upper bearing seat are both fixedly installed on the lifting motor seat. The output end of the lifting motor is connected to the lifting lead screw for transmission. The lifting lead screw is threadedly engaged with the lead screw nut seat on the machine head to drive the machine head to rise and fall. The third slider is fixedly installed on the machine head, and the lead screw nut seat is fixedly connected to the machine head. A lower limit block is also fixed on the machine head. The lower limit block is located below the lifting lower bearing seat and is used to limit the lowest rising and falling position of the machine head.

[0007] In summary, this application includes at least one of the following beneficial technical effects: 1. In the longitudinal drive section of this application, the cooperation between the first lead screw mechanism, the first slide rail, and the first slider significantly improves the straightness and transmission accuracy of the longitudinal movement of the steel beam. The transverse drive section adopts the electromagnetic drive cooperation between the stator and the motor coil, and combined with the guiding effect of the second slide rail and the second slider, effectively accelerates the response speed of the transverse movement of the machine head. At the same time, the setting of anti-collision blocks and proximity switches further ensures the safety and positioning accuracy of transverse movement. The four crossbeam fine-tuning blocks adopt the design of elongated holes on the top, which can conveniently realize the fine-tuning of the installation position and angle of the steel beam, and facilitate the rapid calibration of the printing reference. 2. The coordinated operation of the second lead screw mechanism, the third slide rail, and the third slider in the lifting assembly of this application significantly enhances the transmission stability of the machine head lifting, avoids lifting jamming and positioning deviation problems, and the setting of the lower limit block can accurately limit the lowest position of the machine head to prevent damage to the print head or printing medium due to excessive descent. Attached Figure Description

[0008] Figure 1This is a schematic diagram of the overall structure of the transmission mechanism on the frame of an elliptical digital printing machine; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the connection structure between the steel beam and the machine head in the transmission mechanism of an elliptical digital printing machine; Figure 4 This is a schematic diagram of the lifting component in the transmission mechanism of an oval digital printing machine; Figure 5 This is a schematic diagram of the head structure in the transmission mechanism of an elliptical digital printing machine.

[0009] Explanation of reference numerals in the attached drawings: 1. Longitudinal drive unit; 11. Crossbeam mounting seat; 111. First slider; 112. First lead screw nut; 12. First lead screw mechanism; 121. Adjusting lead screw; 122. Bearing seat; 123. Adjusting motor; 13. First slide rail; 2. Lateral drive unit; 21. Stator; 22. Anti-collision block; 23. Proximity switch; 24. Second slide rail; 3. Lifting assembly; 31. Third slide rail; 32. Second lead screw mechanism; 321. Lifting lead screw; 322. Lifting upper bearing seat; 323. Lifting lower bearing seat; 324. Lifting motor; 325. Lifting motor seat; 4. Steel beam; 41. Crossbeam fine-tuning block; 411. Oblong hole; 42. Connecting block; 5. Frame; 6. Machine head; 61. Second slider; 62. Motor coil; 63. Third slider; 64. Lead screw nut seat; 65. Lower limit block. Detailed Implementation

[0010] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0011] This application discloses a transmission mechanism for an oval digital printing machine.

[0012] Reference Figures 1 to 5A transmission mechanism for an elliptical digital printing machine includes a longitudinal drive unit 1 for driving a steel beam 4 to move longitudinally along a frame 5. The longitudinal drive unit 1 includes a crossbeam mounting base 11 and a first screw mechanism 12 for driving the crossbeam mounting base 11 to move. A first slide rail 13 is mounted longitudinally on the top of the frame 5, and the bottom of the crossbeam mounting base 11 slides against the first slide rail 13 via a first slider 111. The first screw mechanism 12 includes an adjusting screw 121 and a first screw nut 112 fixedly mounted at the center of the crossbeam mounting base 11. The first screw nut 112 is screwed to the adjusting screw 121. Both ends of the adjusting screw 121 are rotatably mounted on bearing seats 122. One end of the adjusting screw 121 is connected to the output end of an adjusting motor 123 via a coupling. The adjusting motor 123 drives the adjusting screw 121 to rotate, thereby causing the crossbeam mounting base 11 to move longitudinally along the frame 5. The bottom of the steel beam 4 is fixedly connected to the top of the crossbeam mounting base 11 via crossbeam fine-tuning blocks 41. There are four crossbeam fine-tuning blocks 41, which are respectively set on the four sides of the top of the crossbeam mounting base 11. The crossbeam fine-tuning blocks 41 are fixed to the crossbeam mounting base 11 by bolts. The top of the crossbeam fine-tuning blocks 41 is provided with an elongated hole 411. A connecting block 42 is fixed to the bottom of the steel beam 4. The connecting block 42 is fixedly connected to the crossbeam fine-tuning blocks 41 by bolts passing through the elongated hole 411. The installation position of the steel beam 4 can be adjusted through the elongated hole 411. When it is necessary to drive the steel beam 4 to move longitudinally along the frame 5, the adjusting motor 123 starts and drives the adjusting screw 121 in the first screw mechanism 12 to rotate through the coupling. Since the adjusting screw 121 and the first screw nut 112 at the center of the crossbeam mounting seat 11 form a helical engagement, and the bottom of the crossbeam mounting seat 11 achieves a sliding engagement with the first slide rail 13 arranged longitudinally on the top of the frame 5 through the first slider 111, the rotational motion of the adjusting screw 121 is converted into the linear motion of the crossbeam mounting seat 11 along the first slide rail 13, thereby driving the steel beam 4 to move longitudinally along the frame 5. The steel beam 4, which is fixedly connected to the top of the crossbeam mounting base 11, completes longitudinal movement. At the same time, the bottom of the steel beam 4 is connected to the crossbeam mounting base 11 through four crossbeam fine-tuning blocks 41 respectively set on the four sides of the top of the crossbeam mounting base 11. The crossbeam fine-tuning blocks 41 are fixed to the crossbeam mounting base 11 by bolts. The elongated hole 411 opened on its top provides adjustment space for fine-tuning the installation position of the steel beam 4. By adjusting the relative fixed position of the connecting block 42 and the elongated hole 411, the installation angle of the steel beam 4 can be easily calibrated to ensure the accuracy of the printing reference.

[0013] Reference Figures 1 to 5The transverse drive unit 2 is used to drive the machine head 6 to move along the length of the steel beam 4. The transverse drive unit 2 includes a stator 21 fixedly mounted on the steel beam 4. Anti-collision blocks 22 and proximity switches 23 are respectively installed at both ends of the stator 21. A second slide rail 24 is also installed on the steel beam 4 along its length. The machine head 6 slides in cooperation with the second slide rail 24 through a second slider 61. A motor coil 62 is also installed on the machine head 6. The motor coil 62 forms an electromagnetic drive cooperation with the stator 21 on the steel beam 4 to realize the transverse movement of the machine head 6. The side of the motor coil 62 away from the stator 21 is fixedly connected to a third slide rail 31. When the lateral drive unit 2 is working, the motor coil 62 installed on the machine head 6 and the stator 21 fixed on the steel beam 4 form an electromagnetic drive cooperation. Under the action of electromagnetic force, the motor coil 62 drives the third slide rail 31 fixedly connected to it to move synchronously. The machine head 6 achieves sliding cooperation with the second slide rail 24 arranged along the length direction on the steel beam 4 through the second slider 61. Therefore, the driving force of the motor coil 62 is converted into the lateral movement of the machine head 6 along the second slide rail 24. At the same time, the anti-collision blocks 22 installed at both ends of the steel beam 4 can prevent the machine head 6 from colliding during lateral movement. The proximity switch 23 is used to accurately detect the lateral position of the machine head 6 and ensure the positioning accuracy of the lateral movement. In addition, the side of the motor coil 62 away from the stator 21 is fixedly connected to the third slide rail 31, providing a stable installation foundation for the subsequent lifting and lowering action of the machine head 6, realizing the structural connection between the lateral drive and the lifting action.

[0014] Reference Figures 1 to 5The lifting assembly 3 is used to drive the machine head 6 to move up and down vertically. The lifting assembly 3 includes a third slide rail 31 fixed on the second slider 61 and a second lead screw mechanism 32. The second lead screw mechanism 32 is connected to the machine head 6 to drive the third slider 63 on the machine head 6 to move up and down along the third slide rail 31. The machine head 6 is slidably connected to the steel beam 4 through the second slider 61 and the lifting assembly 3 is used to achieve the lifting action. The second lead screw mechanism 32 includes a lifting lead screw 321, a lifting upper bearing seat 322 and a lifting lower bearing seat 323. The two ends of the lifting lead screw 321 are rotatably connected to the lifting upper bearing seat 322 and the lifting lower bearing seat 323 respectively. The lifting lower bearing seat 323 is fixedly installed on the motor coil 62. The lifting motor 324 and the lifting upper bearing seat 322 are both fixedly installed on the lifting motor seat 325. The output end of the lifting motor 324 is connected to the lifting lead screw 321. The lifting lead screw 321 is threadedly engaged with the lead screw nut seat 64 on the machine head 6 to drive the machine head 6 to move up and down. The third slider 63 is fixedly installed on the machine head 6. The lead screw nut seat 64 is fixedly connected to the machine head 6. A lower limit block 65 is also fixed on the machine head 6. The lower limit block 65 is located below the lower lifting bearing seat 323 and is used to limit the lowest lifting position of the machine head 6. When the machine head 6 is driven to lift vertically, the lifting motor 324 fixed on the lifting motor seat 325 starts. Its output end drives the lifting lead screw 321 in the second lead screw mechanism 32 to rotate. The two ends of the lifting lead screw 321 are rotatably connected to the upper lifting bearing seat 322 and the lower lifting bearing seat 323, respectively. The lower lifting bearing seat 323 is fixedly installed on the motor coil 62. The upper lifting bearing seat 322 and the lifting motor 324 are fixed together on the lifting motor seat 325 to ensure the stability of the lifting lead screw 321 when rotating. Since the lifting lead screw 321 and the lead screw nut seat 64 fixed on the machine head 6 form a threaded engagement, and the third slider 63 is fixedly installed on the machine head 6... The sliding engagement with the third slide rail 31 transforms the rotational motion of the lifting screw 321 into the vertical lifting motion of the machine head 6 along the third slide rail 31. Simultaneously, the lower limit block 65 fixed on the machine head 6 is located below the lower lifting bearing seat 323. When the machine head 6 descends to its lowest position, the lower limit block 65 abuts against the lower lifting bearing seat 323, precisely limiting the lowest lifting position of the machine head 6. This prevents damage to the printhead or printing medium due to excessive descent of the machine head 6, ensuring the safety and positioning accuracy of the lifting action. Furthermore, the sliding engagement between the third slider 63 and the third slide rail 31 further enhances the stability of the machine head 6's lifting process, effectively preventing lifting jams or positioning deviations.

[0015] Working principle: When this transmission mechanism is working, the installation position and angle of the steel beam 4 are first adjusted through the elongated hole 411 at the top of the crossbeam fine-tuning block 41 to complete the printing benchmark calibration; during longitudinal drive, the adjusting motor 123 drives the adjusting screw 121 to rotate through the coupling, causing the first screw nut 112 on the crossbeam mounting seat 11 to move along the adjusting screw 121, while the first slider 111 at the bottom of the crossbeam mounting seat 11 slides along the first slide rail 13 on the frame 5, realizing the precise longitudinal movement of the steel beam 4; during transverse drive, the motor coil 62 of the machine head 6 and the stator 21 on the steel beam 4 form an electromagnetic drive, driving the machine head 6 to move along the steel beam 4 via the second slider 61. The second slide rail 24 moves laterally, and the proximity switches 23 at both ends of the stator 21 realize positioning detection. The anti-collision block 22 plays a safety protection role. When the machine head 6 is raised and lowered, the lifting motor 324 drives the lifting screw 321 to rotate between the upper lifting bearing seat 322 and the lower lifting bearing seat 323. Through the threaded engagement between the lifting screw 321 and the screw nut seat 64 on the machine head 6, the machine head 6 is driven to rise and fall smoothly along the third slide rail 31 with the third slider 63. The lower limit block 65 on the machine head 6 cooperates with the lower lifting bearing seat 323 to accurately limit the lowest lifting position of the machine head 6. Finally, through the coordinated transmission of longitudinal, lateral and lifting directions, the printing operation is accurately executed.

[0016] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A transmission mechanism for an oval digital printing machine, characterized in that: include The longitudinal drive unit (1) is used to drive the steel beam (4) to move longitudinally along the frame (5). The longitudinal drive unit (1) includes a crossbeam mounting seat (11) and a first screw mechanism (12) for driving the crossbeam mounting seat (11) to move. A first slide rail (13) is installed on the top of the frame (5) longitudinally. The bottom of the crossbeam mounting seat (11) is slidably engaged with the first slide rail (13) through a first slider (111). A transverse drive unit (2) is used to drive the machine head (6) to move along the length direction of the steel beam (4). The transverse drive unit (2) includes a stator (21) fixedly installed on the steel beam (4). Anti-collision blocks (22) and proximity switches (23) are respectively installed at both ends of the stator (21). A second slide rail (24) is also installed on the steel beam (4) along its length direction. The machine head (6) slides with the second slide rail (24) through a second slider (61). The lifting assembly (3) is used to drive the machine head (6) to rise and fall in the vertical direction. The lifting assembly (3) includes a third slide rail (31) fixed on the second slider (61) and a second lead screw mechanism (32). The second lead screw mechanism (32) is connected to the machine head (6) to drive the third slider (63) on the machine head (6) to rise and fall along the third slide rail (31). The machine head (6) is slidably connected to the steel beam (4) through the second slider (61) and the lifting action is realized through the lifting assembly (3).

2. The transmission mechanism of an oval digital printing machine according to claim 1, characterized in that: The first lead screw mechanism (12) includes an adjusting lead screw (121) and a first lead screw nut (112) fixedly installed at the center of the crossbeam mounting base (11). The first lead screw nut (112) is screwed to the adjusting lead screw (121). Both ends of the adjusting lead screw (121) are rotatably mounted on the bearing seat (122). One end of the adjusting lead screw (121) is connected to the output end of the adjusting motor (123) through a coupling. The adjusting motor (123) drives the adjusting lead screw (121) to rotate, thereby driving the crossbeam mounting base (11) to move longitudinally along the frame (5).

3. The transmission mechanism of an elliptical digital printing machine according to claim 2, characterized in that: The bottom of the steel beam (4) is fixedly connected to the top of the crossbeam mounting base (11) via crossbeam fine adjustment blocks (41). There are four crossbeam fine adjustment blocks (41), which are respectively set on the four sides of the top of the crossbeam mounting base (11). The crossbeam fine adjustment blocks (41) are fixed to the crossbeam mounting base (11) by bolts. The top of the crossbeam fine adjustment blocks (41) is provided with an elongated hole (411). The bottom of the steel beam (4) is fixed with a connecting block (42). The connecting block (42) is fixedly connected to the crossbeam fine adjustment blocks (41) by bolts passing through the elongated hole (411). The installation position of the steel beam (4) can be adjusted through the elongated hole (411).

4. The transmission mechanism of an oval digital printing machine according to claim 1, characterized in that: The machine head (6) is also equipped with a motor coil (62), which forms an electromagnetic drive with the stator (21) on the steel beam (4) to realize the lateral movement of the machine head (6). The side of the motor coil (62) away from the stator (21) is fixedly connected to the third slide rail (31).

5. The transmission mechanism of an oval digital printing machine according to claim 4, characterized in that: The second lead screw mechanism (32) includes a lifting lead screw (321), an upper lifting bearing seat (322), and a lower lifting bearing seat (323). The two ends of the lifting lead screw (321) are rotatably connected to the upper lifting bearing seat (322) and the lower lifting bearing seat (323), respectively. The lower lifting bearing seat (323) is fixedly installed on the motor coil (62). The lifting motor (324) and the upper lifting bearing seat (322) are both fixedly installed on the lifting motor seat (325). The output end of the lifting motor (324) is connected to the lifting lead screw (321) for transmission. The lifting lead screw (321) is threadedly engaged with the lead screw nut seat (64) on the machine head (6) to drive the machine head (6) to lift.

6. The transmission mechanism of an oval digital printing machine according to claim 5, characterized in that: The third slider (63) is fixedly installed on the machine head (6), the lead screw nut seat (64) is fixedly connected to the machine head (6), and a lower limit block (65) is also fixed on the machine head (6). The lower limit block (65) is located below the lifting lower bearing seat (323) and is used to limit the lowest lifting position of the machine head (6).

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