Transmission mechanism of printing machinery

Abstract

The invention discloses a transmission mechanism of printing machinery, and particularly relates to the field of printing transmission mechanisms, the transmission mechanism comprises a shell, a driving shell, a driving mechanism and a transmission mechanism, the driving shell is installed on the side end face of the shell, the driving mechanism is arranged in an inner cavity of the driving shell, and the transmission mechanism is arranged at the output end of the driving mechanism. The transmission mechanism comprises a fixing shell and a spindle, a partition plate is arranged in an inner cavity of the shell, the fixing shell penetrates through the side end face of the partition plate, the spindle penetrates through the side end face of the fixing shell, and an auxiliary transmission gear is mounted on the outer diameter surface of the spindle. Vibration generated by rotation of a second servo motor is absorbed through a flywheel, damping is further conducted on the transmission process through a sliding block, a sliding groove and an elastic telescopic rod in a transmission mechanism, and therefore the situation that a transmission system generates vibration, and then the printing speed is affected is avoided; therefore, the rotation precision of the transmission system is ensured, and the service life of transmission parts is prolonged.

Description

Technical Field

[0001] The present application relates to the field of printing transmission mechanisms, and more specifically, to a transmission mechanism of a printing machine. Background Art

[0002] The transmission mechanism of a printing machine refers to the component responsible for transmitting power and motion in a printing machine. It transmits the power of the prime mover to various working parts of the printing machine, such as the cylinder and the platen, to realize various movements in the printing process, such as the rotation of the cylinder and the reciprocating motion of the platen. The design and performance of the transmission mechanism directly affect the working efficiency, printing quality and stability of the printing machine. For example, application number CN202220139497.5 discloses a transmission mechanism of a printing machine, which can change the vertical distance of one of the conveying rollers by sliding a movable rod, and change the lateral distance of the conveying roller by moving the position of the mounting plate, thereby changing the conveyor belt in the present application from horizontal transmission to inclined transmission, so as to meet the transmission requirements in different situations; the above device solves the problem that the existing transmission mechanism cannot meet the requirements of horizontal transmission and inclined transmission of materials at the same time, but when the printing machine moves at high speed, the transmission system may vibrate, which not only affects the printing speed, but also may cause damage to machine parts. At the same time, due to the high working intensity of the printing machine, the transmission parts are prone to wear, which affects the service life, and also affects the accuracy of the transmission system and thus affects the quality of the printed products; Therefore, in view of the above problems, a transmission mechanism of a printing machine is proposed. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present application provides a transmission mechanism of a printing machine to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A transmission mechanism of a printing machinery, comprising a shell, a drive shell, a drive mechanism and a transmission mechanism, wherein the drive shell is installed on the side end surface of the shell, and the inner cavity of the drive shell is provided with a drive mechanism, and the output end of the drive mechanism is provided with a transmission mechanism, and the transmission mechanism comprises a fixed shell and a main shaft, the inner cavity of the shell is provided with a partition, and the fixed shell is penetrated and installed on the side end surface of the partition, and the side end surface of the fixed shell is penetrated and provided with a main shaft, an auxiliary transmission gear is installed on the outer diameter surface of the main shaft, and conical teeth are installed on both sides of the auxiliary transmission gear, the auxiliary transmission gear is meshed and connected with a first bevel gear through the conical teeth, and the first bevel gear is installed at the output end of a first servo motor, a connecting rod is provided at one end of the first servo motor away from the first bevel gear, and a slider is provided at one end of the connecting rod, and the slider is slidably connected with a slide groove, elastic telescopic rods are provided on both sides of the auxiliary transmission gear, and the end of the elastic telescopic rod away from the auxiliary transmission gear is fixedly connected to the inner cavity of the fixed shell through a limit block.

[0005] Preferably, the driving mechanism includes a second servo motor and a first transmission wheel, the second servo motor is installed at the bottom of the inner cavity of the driving shell, and the output end of the second servo motor is provided with the first transmission wheel, the first transmission wheel is connected to the second transmission wheel through a first transmission belt, and a first tensioning assembly is provided on one side of the first transmission belt, the second transmission wheel is installed on the outer diameter surface of the first shaft rod, and a third transmission wheel is provided on one side of the second transmission wheel, the third transmission wheel is connected to the fourth transmission wheel through the second transmission belt, and the fourth transmission wheel is installed on the outer diameter surface of the second shaft rod, a flywheel is provided on one side of the second shaft rod, the first shaft rod passes through the side wall of the driving shell and is installed with a fifth transmission wheel, and the fifth transmission wheel is connected to the sixth transmission wheel through the third transmission belt, and a second tensioning assembly is provided on one side of the sixth transmission wheel.

[0006] Preferably, the first tensioning assembly includes a fixed rod and a reset telescopic rod, the reset telescopic rod is installed on the outer diameter surface of the fixed rod, and a support frame is provided at one end of the reset telescopic rod away from the fixed rod, and the support frame is connected to the tensioning wheel through a bearing.

[0007] Preferably, the auxiliary transmission gear forms a gear meshing connection structure with the first bevel gear through bevel teeth, the first bevel gear, the first servo motor, the slider and the slide groove are each provided in two groups, and the first servo motor forms a sliding structure with the slide groove through a connecting rod and a slider.

[0008] Preferably, the elastic telescopic rod and the limit block are each provided with two groups, and the contact surface between the limit block and the fixed shell is provided with a bearing, the limit block forms a rotating structure rotating around the center of the bearing with the fixed shell through the bearing, and the auxiliary transmission gear and the first bevel gear are wrapped by a protective cover.

[0009] Preferably, the contact surfaces of the first shaft rod and the second shaft rod with the inner wall of the drive housing are provided with bearings, and the first shaft rod and the second shaft rod form a rotating structure rotating around the center of the bearing with the drive housing through the bearings, and the first transmission wheel forms a synchronous belt transmission structure with the second transmission wheel through the first transmission belt.

[0010] Preferably, the third transmission wheel forms a synchronous belt transmission structure with the fourth transmission wheel through the second transmission belt, and the first transmission wheel, the second transmission wheel, the first shaft, the third transmission wheel, the fourth transmission wheel, the second shaft and the flywheel, the fifth transmission wheel and the sixth transmission wheel rotate synchronously.

[0011] Preferably, the fifth transmission wheel forms a synchronous belt transmission structure with the sixth transmission wheel through the third transmission belt, the first tensioning assembly and the second tensioning assembly have the same structure, and the first transmission belt, the second transmission belt and the third transmission belt are all synchronous belts.

[0012] Preferably, the sixth transmission wheel is installed on the outer diameter surface of the output shaft, and the output shaft and the main shaft in the transmission mechanism are connected by flange bolts, and the tensioning wheel in the first tensioning assembly forms a rotating structure that rotates around the center of the bearing through the bearing and the support frame.

[0013] Preferably, the second servo motor forms a belt drive structure with the main shaft in the transmission mechanism through the first transmission wheel, the first transmission belt, the second transmission wheel, the first shaft, the fifth transmission wheel, the third transmission belt, the sixth transmission wheel and the output shaft.

[0014] Technical effects and advantages of this application: Compared with the prior art, when the transmission mechanism of this printing machine is in use, the vibration generated by the rotation of the second servo motor is absorbed by the flywheel, and the transmission process is further damped by the slider, slide groove and elastic telescopic rod in the transmission mechanism, thereby avoiding vibration of the transmission system and affecting the printing speed. The transmission is carried out through a synchronous transmission belt, thereby ensuring the rotation accuracy of the transmission system and increasing the service life of the transmission components.

[0015] Compared with the prior art, when the transmission mechanism of the printing machine is in use, the power generated by the second servo motor is transmitted to the transmission mechanism through the driving mechanism, and then the power is further transmitted to the corresponding equipment through the transmission mechanism, wherein the second servo motor is started, and the second servo motor drives the second transmission wheel to rotate through the first transmission wheel and the first transmission belt, and the first shaft rod is further driven to rotate by the second transmission wheel, and at the same time, the first shaft rod penetrates the side wall of the driving shell, and the outer diameter surface of the first shaft rod is provided with a fifth transmission wheel so that the fifth transmission wheel can rotate, and the fifth transmission wheel and the sixth transmission wheel form a synchronous belt transmission structure through the third transmission belt, so that the sixth transmission wheel and the transmission belt can be used to rotate. The output shaft transmits power to the main shaft in the transmission mechanism, and when the first shaft rod rotates, the third transmission wheel, the second transmission belt and the fourth transmission wheel are used to transmit the vibration generated by the rotation of the first shaft rod to the flywheel through the second shaft rod, and then the vibration force is absorbed by the flywheel. Through the above structure, the vibration generated in the transmission process is reduced. At the same time, through the synchronous belt transmission, it is beneficial to increase the transmission accuracy of the transmission system, and at the same time, it can also increase the service life of the transmission parts. In the transmission process, the first transmission belt and the third transmission belt are timely tensioned by the first tensioning assembly and the second tensioning assembly, and the support frame and the tensioning wheel are driven to move by the reset telescopic rod, thereby increasing the transmission accuracy of the transmission system.

[0016] Compared with the prior art, when the transmission mechanism of this printing machinery is in use, power is transmitted to the corresponding position through the transmission mechanism, wherein the sixth transmission wheel and the output shaft transmit power to the main shaft in the transmission mechanism, and an auxiliary transmission gear is installed on the outer diameter surface of the main shaft, so that the main shaft drives the auxiliary transmission gear to rotate, and at the same time, the auxiliary transmission gear drives the first bevel gear to rotate through the conical teeth, and the first bevel gear is installed at the output end of the first servo motor, thereby assisting the main shaft to rotate. When the height of the main shaft needs to be adjusted, the first servo motor slides along the slide groove and the fixed shell through the connecting rod and the slider, and bearings are installed at both ends of the elastic telescopic rod, so that it rotates, and the vibration generated during the transmission process is absorbed by the elastic telescopic rod, which is also beneficial to support the main shaft, wherein the sixth transmission wheel is installed on the outer diameter surface of the output shaft, and when the height of the main shaft is adjusted, the height of the output shaft is adjusted synchronously, thereby facilitating power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the shell of this application.

[0018] Figure 2 This is a schematic diagram of the side section structure of the shell of this application.

[0019] Figure 3 This is a schematic diagram of the front cross-section structure of the transmission mechanism of this application.

[0020] Figure 4This is a schematic diagram of the front cross-section structure of the first tensioning assembly of the present application.

[0021] Figure 5 This is a schematic diagram of the front cross-section structure of the first transmission wheel of this application.

[0022] The accompanying drawings are marked as follows: 1, housing; 2, drive housing; 3, drive mechanism; 31, second servo motor; 32, first transmission wheel; 33, first transmission belt; 34, second transmission wheel; 35, first tensioning assembly; 351, fixed rod; 352, reset telescopic rod; 353, support frame; 354, tensioning wheel; 36, first shaft; 37, third transmission wheel; 38, second transmission belt; 39, fourth transmission wheel; 310, second shaft; 311, flywheel; 312, fifth transmission wheel; 313, third transmission belt; 314, sixth transmission wheel; 315, second tensioning assembly; 4, transmission mechanism; 41, fixed housing; 42, main shaft; 43, auxiliary transmission gear; 44, conical teeth; 45, first conical gear; 46, first servo motor; 47, slider; 48, slide groove; 49, elastic telescopic rod; 410, limit block; 5, partition. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0024] As attached Figures 1 to 3 The transmission mechanism of a printing machine shown in the figure comprises a housing 1, a driving housing 2, a driving mechanism 3 and a transmission mechanism 4, wherein the driving housing 2 is mounted on the side end surface of the housing 1, and the inner cavity of the driving housing 2 is provided with the driving mechanism 3, and the output end of the driving mechanism 3 is provided with the transmission mechanism 4, and the transmission mechanism 4 comprises a fixed housing 41 and a main shaft 42, and the inner cavity of the housing 1 is provided with a partition 5, and the fixed housing 41 is penetrated and installed on the side end surface of the partition 5, and the side end surface of the fixed housing 41 is penetrated and provided with a main shaft 42, and the outer diameter surface of the main shaft 42 is provided with an auxiliary transmission gear 43, and the auxiliary transmission gear 43 is provided with a plurality of gears. Conical teeth 44 are installed on both sides, the auxiliary transmission gear 43 is meshed and connected with the first bevel gear 45 through the conical teeth 44, and the first bevel gear 45 is installed at the output end of the first servo motor 46, a connecting rod is provided at one end of the first servo motor 46 away from the first bevel gear 45, and a slider 47 is provided at one end of the connecting rod, and the slider 47 is slidably connected with a slide groove 48, and elastic telescopic rods 49 are provided on both sides of the auxiliary transmission gear 43, and the end of the elastic telescopic rod 49 away from the auxiliary transmission gear 43 is fixedly connected to the inner cavity of the fixed shell 41 through a limit block 410.

[0025] Among them: the transmission mechanism 4 is used to transmit power to the corresponding position, wherein the sixth transmission wheel 314 and the output shaft transmit power to the main shaft 42 in the transmission mechanism 4, and the auxiliary transmission gear 43 is installed on the outer diameter surface of the main shaft 42, so that the main shaft 42 drives the auxiliary transmission gear 43 to rotate, and at the same time, the auxiliary transmission gear 43 drives the first bevel gear 45 to rotate through the conical teeth 44, and the first bevel gear 45 is installed at the output end of the first servo motor 46, thereby assisting the main shaft 42 to rotate. When the height of the main shaft 42 needs to be adjusted, the first servo motor 46 slides along the slide groove 48 and the fixed shell 41 by using the connecting rod and the slider 47, and at the same time, bearings are installed at both ends of the elastic telescopic rod 49, thereby rotating, and the elastic telescopic rod 49 is used to absorb the vibration generated during the transmission process, which is also beneficial to supporting the main shaft 42, wherein the sixth transmission wheel 314 is installed on the outer diameter surface of the output shaft, and when the height of the main shaft 42 is adjusted, the height of the output shaft is synchronously adjusted to facilitate power transmission.

[0026] The driving mechanism 3 includes a second servo motor 31 and a first transmission wheel 32. The second servo motor 31 is installed at the bottom of the inner cavity of the driving shell 2, and the first transmission wheel 32 is provided at the output end of the second servo motor 31. The first transmission wheel 32 is connected to the second transmission wheel 34 through a first transmission belt 33, and a first tensioning assembly 35 is provided on one side of the first transmission belt 33. The second transmission wheel 34 is installed on the outer diameter surface of the first shaft rod 36, and a third transmission wheel 37 is provided on one side of the second transmission wheel 34. The third transmission wheel 37 is connected to the fourth transmission wheel 39 through a second transmission belt 38, and the fourth transmission wheel 39 is installed on the outer diameter surface of the second shaft rod 310. A flywheel 311 is provided on one side of the second shaft rod 310. The first shaft rod 36 passes through the side wall of the driving shell 2 and is installed with a fifth transmission wheel 312. The fifth transmission wheel 312 is connected to the sixth transmission wheel 314 through the third transmission belt 313, and a second tensioning assembly 315 is provided on one side of the sixth transmission wheel 314.

[0027] Wherein: the driving mechanism 3 is used to transmit the power generated by the second servo motor 31 to the transmission mechanism 4, and the transmission mechanism 4 is used to continue to transmit the power to the corresponding equipment, wherein the second servo motor 31 is started, and the second servo motor 31 drives the second transmission wheel 34 to rotate by using the first transmission wheel 32 and the first transmission belt 33, and further drives the first shaft 36 to rotate by the second transmission wheel 34, and at the same time, the first shaft 36 penetrates the side wall of the driving shell 2, and the outer diameter surface of the first shaft 36 is provided with a fifth transmission wheel 312, so that the fifth transmission wheel 312 can rotate, and the fifth transmission wheel 312 forms a synchronous belt transmission structure with the sixth transmission wheel 314 through the third transmission belt 313, so that the sixth transmission wheel 314 and the output shaft can be driven by the first transmission wheel 314. The power is transmitted to the main shaft 42 in the transmission mechanism 4, and when the first shaft 36 rotates, the vibration generated by the rotation of the first shaft 36 is transmitted to the flywheel 311 through the second shaft 310 through the third transmission wheel 37, the second transmission belt 38 and the fourth transmission wheel 39. The flywheel 311 absorbs the vibration force and reduces the vibration generated during the transmission process. At the same time, the synchronous belt transmission is beneficial to increase the transmission accuracy of the transmission system and increase the service life of the transmission parts. In the transmission process, the first tensioning assembly 35 and the second tensioning assembly 315 are used to tension the first transmission belt 33 and the third transmission belt 313, and the reset telescopic rod 352 is used to drive the support frame 353 and the tensioning wheel 354 to move, thereby increasing the transmission accuracy of the transmission system. Example

[0028] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 5 As shown, see the following description for details: As a preferred embodiment, the first tensioning assembly 35 includes a fixed rod 351 and a reset telescopic rod 352, the reset telescopic rod 352 is installed on the outer diameter surface of the fixed rod 351, and a support frame 353 is provided at one end of the reset telescopic rod 352 away from the fixed rod 351, and the support frame 353 is connected to the tensioning wheel 354 through a bearing.

[0029] As a preferred embodiment, the auxiliary transmission gear 43 forms a gear meshing connection structure with the first bevel gear 45 through the bevel teeth 44, the first bevel gear 45, the first servo motor 46, the slider 47 and the slide groove 48 are each provided with two groups, and the first servo motor 46 forms a sliding structure with the slide groove 48 through the connecting rod and the slider 47.

[0030] As a preferred embodiment, two groups of elastic telescopic rods 49 and limit blocks 410 are provided, and bearings are provided on the contact surfaces of the limit blocks 410 and the fixed shell 41. The limit blocks 410 form a rotating structure that rotates around the center of the bearing with the fixed shell 41 through the bearings, and the auxiliary transmission gear 43 and the first bevel gear 45 are wrapped by a protective cover.

[0031] As a preferred embodiment, bearings are provided on the contact surfaces between the first shaft 36 and the second shaft 310 and the inner wall of the drive housing 2, and the first shaft 36 and the second shaft 310 form a rotating structure that rotates around the center of the bearings with the drive housing 2 through the bearings, and the first transmission wheel 32 forms a synchronous belt transmission structure with the second transmission wheel 34 through the first transmission belt 33.

[0032] As a preferred embodiment, the third transmission wheel 37 forms a synchronous belt transmission structure with the fourth transmission wheel 39 through the second transmission belt 38, and the first transmission wheel 32, the second transmission wheel 34, the first shaft 36, the third transmission wheel 37, the fourth transmission wheel 39, the second shaft 310 and the flywheel 311, the fifth transmission wheel 312 and the sixth transmission wheel 314 rotate synchronously.

[0033] As a preferred embodiment, the fifth transmission wheel 312 forms a synchronous belt transmission structure with the sixth transmission wheel 314 through the third transmission belt 313, the first tensioning assembly 35 and the second tensioning assembly 315 have the same structure, and the first transmission belt 33, the second transmission belt 38 and the third transmission belt 313 are all synchronous belts.

[0034] As a preferred embodiment, the sixth transmission wheel 314 is installed on the outer diameter surface of the output shaft, and the output shaft and the main shaft 42 in the transmission mechanism 4 are connected by flange bolts, and the tensioning wheel 354 in the first tensioning assembly 35 forms a rotating structure that rotates around the center of the bearing through the bearing and the support frame 353.

[0035] As a preferred embodiment, the second servo motor 31 forms a belt drive structure through the first transmission wheel 32, the first transmission belt 33, the second transmission wheel 34, the first shaft 36, the fifth transmission wheel 312, the third transmission belt 313, the sixth transmission wheel 314 and the output shaft and the main shaft 42 in the transmission mechanism 4.

[0036] The working process of the present application is as follows: the driving mechanism 3 is used to transmit the power generated by the second servo motor 31 to the transmission mechanism 4, and the transmission mechanism 4 is used to continue to transmit the power to the corresponding equipment, wherein the second servo motor 31 is started, and the second servo motor 31 drives the second transmission wheel 34 to rotate through the first transmission wheel 32 and the first transmission belt 33, and the second transmission wheel 34 is used to further drive the first shaft 36 to rotate, and at the same time, the first shaft 36 penetrates the side wall of the driving shell 2, and the outer diameter surface of the first shaft 36 is provided with a fifth transmission wheel 312, so that the fifth transmission wheel 31 2 is rotated, and the fifth transmission wheel 312 forms a synchronous belt transmission structure with the sixth transmission wheel 314 through the third transmission belt 313, so that the sixth transmission wheel 314 and the output shaft are used to transmit power to the main shaft 42 in the transmission mechanism 4, and when the first shaft 36 is rotating, the vibration generated by the rotation of the first shaft 36 is transmitted to the flywheel 311 through the second shaft 310 by using the third transmission wheel 37, the second transmission belt 38 and the fourth transmission wheel 39, and the flywheel 311 is used to absorb the vibration force, and in the transmission process, the first tensioning assembly 35 and the second tensioning assembly 3 15 The first transmission belt 33 and the third transmission belt 313 are tensioned, and the support frame 353 and the tensioning wheel 354 are driven to move by the reset telescopic rod 352 to increase the transmission accuracy of the transmission system, and the power is transmitted to the corresponding position by the transmission mechanism 4, wherein the sixth transmission wheel 314 and the output shaft transmit the power to the main shaft 42 in the transmission mechanism 4, and the auxiliary transmission gear 43 is installed on the outer diameter surface of the main shaft 42, wherein the main shaft 42 drives the auxiliary transmission gear 43 to rotate, and at the same time, the auxiliary transmission gear 43 drives the first bevel gear 45 to rotate by using the bevel teeth 44 , and the first bevel gear 45 is installed at the output end of the first servo motor 46 to assist the main shaft 42 in rotating. When the height of the main shaft 42 needs to be adjusted, the first servo motor 46 slides along the slide groove 48 and the fixed shell 41 through the connecting rod and the slider 47. At the same time, bearings are installed at both ends of the elastic telescopic rod 49, and then rotates. The elastic telescopic rod 49 is used to absorb the vibration generated during the transmission process, which is also beneficial to supporting the main shaft 42. The sixth transmission wheel 314 is installed on the outer diameter surface of the output shaft. When the height of the main shaft 42 is adjusted, the height of the output shaft is adjusted synchronously.

Claims

1. A transmission mechanism for a printing machine, comprising a housing (1), a drive housing (2), a drive mechanism (3) and a transmission mechanism (4), characterized in that: The drive housing (2) is mounted on a side end surface of the housing (1), and a drive mechanism (3) is disposed in an inner cavity of the drive housing (2). A transmission mechanism (4) is disposed at an output end of the drive mechanism (3). The transmission mechanism (4) comprises a fixed housing (41) and a main shaft (42). A partition (5) is disposed in the inner cavity of the housing (1), and the fixed housing (41) is penetrated and mounted on a side end surface of the partition (5). A main shaft (42) is penetrated and disposed on a side end surface of the fixed housing (41). An auxiliary transmission gear (43) is mounted on an outer diameter surface of the main shaft (42), and conical teeth (44) are mounted on both sides of the auxiliary transmission gear (43). The auxiliary transmission gear (43) is meshedly connected to a first bevel gear (45) via bevel teeth (44), and the first bevel gear (45) is mounted on an output end of a first servo motor (46). A connecting rod is provided at one end of the first servo motor (46) away from the first bevel gear (45), and a slider (47) is provided at one end of the connecting rod. The slider (47) is slidably connected to a slide groove (48). Elastic telescopic rods (49) are provided on both sides of the auxiliary transmission gear (43), and one end of the elastic telescopic rod (49) away from the auxiliary transmission gear (43) is fixedly connected to the inner cavity of the fixed shell (41) via a limit block (410).

2. The transmission mechanism of a printing machine according to claim 1, characterized in that: The driving mechanism (3) comprises a second servo motor (31) and a first transmission wheel (32), wherein the second servo motor (31) is mounted at the bottom of the inner cavity of the driving housing (2), and the output end of the second servo motor (31) is provided with the first transmission wheel (32), the first transmission wheel (32) is connected to the second transmission wheel (34) via a first transmission belt (33), and a first tensioning assembly (35) is provided on one side of the first transmission belt (33), the second transmission wheel (34) is mounted on the outer diameter surface of the first shaft (36), and a third transmission assembly (35) is provided on one side of the second transmission wheel (34). The third transmission wheel (37) is connected to a fourth transmission wheel (39) via a second transmission belt (38), and the fourth transmission wheel (39) is mounted on the outer diameter surface of the second shaft (310), a flywheel (311) is arranged on one side of the second shaft (310), the first shaft (36) passes through the side wall of the drive housing (2) and is mounted with a fifth transmission wheel (312), and the fifth transmission wheel (312) is connected to a sixth transmission wheel (314) via a third transmission belt (313), and a second tensioning assembly (315) is arranged on one side of the sixth transmission wheel (314).

3. The transmission mechanism of a printing machine according to claim 2, characterized in that: The first tensioning assembly (35) comprises a fixed rod (351) and a resetting telescopic rod (352); the resetting telescopic rod (352) is mounted on the outer diameter surface of the fixed rod (351); a support frame (353) is arranged at one end of the resetting telescopic rod (352) away from the fixed rod (351); and the support frame (353) is connected to a tensioning wheel (354) via a bearing.

4. The transmission mechanism of a printing machine according to claim 1, characterized in that: The auxiliary transmission gear (43) forms a gear meshing connection structure with the first bevel gear (45) via bevel teeth (44); the first bevel gear (45), the first servo motor (46), the slider (47) and the slide groove (48) are each provided with two groups; and the first servo motor (46) forms a sliding structure with the slide groove (48) via a connecting rod and the slider (47).

5. The transmission mechanism of a printing machine according to claim 1, characterized in that: The elastic telescopic rod (49) and the limit block (410) are each provided in two groups, and a bearing is provided on a contact surface between the limit block (410) and the fixed shell (41). The limit block (410) and the fixed shell (41) form a rotating structure rotating around the center of the bearing through the bearing, and the auxiliary transmission gear (43) and the first bevel gear (45) are wrapped by a protective cover.

6. The transmission mechanism of a printing machine according to claim 2, characterized in that: The contact surfaces of the first shaft rod (36) and the second shaft rod (310) with the inner wall of the drive housing (2) are provided with bearings, and the first shaft rod (36) and the second shaft rod (310) form a rotating structure rotating around the center of the bearing with the drive housing (2) through the bearings, and the first transmission wheel (32) forms a synchronous belt transmission structure with the second transmission wheel (34) through the first transmission belt (33).

7. The transmission mechanism of a printing machine according to claim 2, characterized in that: The third transmission wheel (37) forms a synchronous belt transmission structure with the fourth transmission wheel (39) through the second transmission belt (38), and the first transmission wheel (32), the second transmission wheel (34), the first shaft (36), the third transmission wheel (37), the fourth transmission wheel (39), the second shaft (310) and the flywheel (311), the fifth transmission wheel (312) and the sixth transmission wheel (314) rotate synchronously.

8. The transmission mechanism of a printing machine according to claim 2, characterized in that: The fifth transmission wheel (312) forms a synchronous belt transmission structure with the sixth transmission wheel (314) through the third transmission belt (313); the first tensioning assembly (35) and the second tensioning assembly (315) have the same structure; the first transmission belt (33), the second transmission belt (38) and the third transmission belt (313) are all synchronous belts.

9. The transmission mechanism of a printing machine according to claim 2, characterized in that: The sixth transmission wheel (314) is mounted on the outer diameter surface of the output shaft, and the output shaft and the main shaft (42) in the transmission mechanism (4) are connected by flange bolts. The tensioning wheel (354) in the first tensioning assembly (35) forms a rotating structure that rotates around the center of the bearing through a bearing and a support frame (353).

10. The transmission mechanism of a printing machine according to claim 9, characterized in that: The second servo motor (31) forms a belt drive structure via a first transmission wheel (32), a first transmission belt (33), a second transmission wheel (34), a first shaft (36), a fifth transmission wheel (312), a third transmission belt (313), a sixth transmission wheel (314) and an output shaft and a main shaft (42) in the transmission mechanism (4).

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