A rotary drive device for a two-station cup mold of a printing press

Abstract

The invention relates to a rotary drive device for a two-station cup mold of a printing machine, which is applied in the technical field of curved surface printing equipment and solves the problem that scratches are easily generated on the inner wall of the cup body, which affects the aesthetics of the cup body and results in a high product scrap rate. The device comprises a frame, an output shaft of a divider arranged on one side of the frame, a cup mold assembly installed on the output shaft of the divider, a driving sleeve sleeved on the outer shell of the output shaft of the divider, two driving assemblies driving the cup mold to make intermittent motion and a double-sided driving belt connecting the two driving assemblies. The driving assembly comprises a supporting shaft, a steering wheel, a driving wheel and a friction disc. The steering wheel is mounted on one side of the supporting shaft through a supporting arm, and a bearing seat for mounting the driving wheel is arranged on the other side of the supporting shaft. The friction disc is arranged on one side of the bearing seat and rotates synchronously with the driving wheel, and the friction disc is in friction contact with the cup mold. The device has the advantages that scratches are not easily generated on the inner wall of the cup body, the aesthetics of the cup body is improved and the yield rate is high.

Description

Technical Field

[0001] The invention is applied in the technical field of curved surface printing equipment, and in particular relates to a rotary drive device for a two-station cup mold of a printing machine. Background Art

[0002] In order to improve the aesthetics of the outer surface of cups, bowls, hoses and bottle caps made of plastic or metal paper for daily use, a curved printing machine is usually used to print patterns. The step indexer in the curved printing machine includes a cup mold mounting ring with multiple cup mold shafts and a driving device for driving the cup mold mounting ring to rotate. This cup mold mounting ring is a seven-station radial cup mold mounting ring. The seven-station radial cup mold mounting ring means that the cup mold shaft is arranged on the circumference of the cup mold mounting ring, and the axis of the cup mold shaft is perpendicular to the axis of the cup mold mounting ring. The seven stations include: feeding (10:30) station, detection (10:30) station, corona (12:00) station, printing (3:00) station, curing (6:00) station, defective product detection (7:30) station, and finished product delivery (9:00) station.

[0003] The cup mold self-rotation drive system in the current equipment is defective. The current cup mold self-rotation drive system drives multiple cup molds on the entire cup mold mounting plate to rotate at the same time. Under this drive mode, scratches will be generated at the cup inlet and outlet stations for cup types such as frosted high cups and high transparent cups. For example: at the cup inlet station, spiral scratches will be generated at the moment when the non-rotating cup contacts the high-speed rotating cup mold; at the cup outlet station, at the moment when the cup and the cup mold are separated, since the cup mold maintains high-speed rotation and the cup rotation speed is reduced, a speed difference is generated between the cup and the cup mold, and scratches will also be generated at this moment. The scratches generated affect the aesthetics of the cup and the product scrap rate is relatively high. Summary of the invention

[0004] The purpose of the present invention is to provide a rotary drive device for a two-station cup mold of a printing machine, which solves the problem that scratches are easily generated on the inner wall of the cup body, affecting the aesthetics of the cup body and causing a high product scrap rate.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention provides a rotary drive device for a two-station cup mold of a printing machine, comprising a frame, an indexer output shaft vertically arranged on a side of the frame, a cup mold assembly arranged on the indexer output shaft, the cup mold assembly comprising a cup mold mounting ring, a plurality of cup mold shafts radially fixed to the cup mold mounting ring, and a cup mold rotatably connected to each of the cup mold shafts, the cup mold mounting ring being fixed to the output end of the indexer output shaft;

[0007] A driving sleeve, the driving sleeve is mounted on the housing of the output shaft of the indexer, and the driving sleeve and the output shaft of the indexer rotate relative to each other;

[0008] It also includes two driving components for driving the cup mold to make intermittent motion, the driving components including a support shaft, a steering wheel, a driving wheel and a friction disk, one end of the support shaft is arranged on the frame, the steering wheel is installed on one side of the support shaft through a support arm, a bearing seat for installing the driving wheel is arranged on the side of the support shaft opposite to the support arm, the driving wheel is arranged on one side of the bearing seat, the axis of the steering wheel is in the same straight line as the axis of the driving wheel, the friction disk is arranged on the other side of the bearing seat and rotates synchronously with the driving wheel, and the friction surface of the friction disk is in friction contact with the cup mold moved to the position of the driving component;

[0009] A double-sided driving belt connects the two driving assemblies, and the double-sided driving belt is simultaneously sleeved on the steering wheel and the driving wheel in the two driving assemblies, and the outer surface of the double-sided driving belt is in frictional contact with the outer surface of the driving sleeve.

[0010] Furthermore, a fixed shaft is fixedly arranged on the end surface of the driving wheel close to the bearing seat, and the fixed shaft passes through the bearing seat. A fixed groove is arranged on the end surface of the fixed shaft away from the driving wheel, and the fixed groove extends along the axial direction of the fixed shaft to the interior of the driving wheel. An adjustment component for adjusting the axial movement of the friction plate along the fixed shaft is arranged in the fixed groove.

[0011] Furthermore, the adjustment assembly includes a spring and a driving half-shaft, the driving half-shaft is slidably connected in a fixed groove, one end of the driving half-shaft outside the fixed groove is fixedly connected to the friction plate, the spring is horizontally arranged in the fixed groove, one end of the spring abuts against the end surface of the driving half-shaft in the fixed groove, and the other end of the spring abuts against the inner end surface of the fixed groove, and the driving half-shaft is provided with a limiting hole for limiting the moving distance of the driving half-shaft, and the limiting hole is provided with a fixing pin for fixing the driving half-shaft in the fixed groove.

[0012] Furthermore, an oil filling hole is arranged on the end surface of the driving wheel away from the bearing seat, and the oil filling hole is communicated with the fixing groove.

[0013] Furthermore, the support arm and the bearing seat are connected to the support shaft with an open ring, and the first connecting block and the second connecting block are respectively provided on both sides of the opening of the open ring, and the first connecting block and the second connecting block are connected by fastening bolts.

[0014] Furthermore, a connecting plate is provided at one end of the supporting shaft, a waist-shaped hole is provided on the connecting plate, a first bolt is provided in the waist-shaped hole, and the connecting plate is connected to the frame through the first bolt.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0016] The present invention provides a rotary drive device for a two-station cup mold of a printing machine, wherein drive components are arranged at the twelve o'clock position and the six o'clock position of the cup mold mounting ring, and the drive sleeve serves as a power source to drive the steering wheel and the drive wheel to rotate through a double-sided drive belt, thereby driving the friction disk connected to the drive wheel to rotate, and the friction disk arranged at the twelve o'clock position (corona station) or the friction disk arranged at the six o'clock position (curing station) is in friction contact with the lower end of the cup mold, and the cup mold is driven to rotate under the action of friction force, at which time the cup body sleeved on the cup mold rotates synchronously with the cup mold, and the inner wall of the cup body is not easily scratched during rotation. Since no drive components are arranged at other station positions, the inner wall of the cup body is not easily scratched during loading and unloading, thereby improving the aesthetics of the cup body and improving the yield of the cup body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A magnified view of the middle part;

[0020] Figure 3 is a schematic diagram of the connection relationship between the double-sided drive belt and two drive components in an embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the connection structure between the driving wheel and the driving half shaft in an embodiment of the present invention;

[0022] Figure 5 It is a cross-sectional view of the connection structure between the driving wheel and the driving half shaft in an embodiment of the present invention.

[0023] The reference numerals are described as follows:

[0024] 1. Frame; 2. Indexer output shaft; 3. Cup mold assembly; 31. Cup mold mounting ring; 32. Cup mold shaft; 33. Cup mold; 4. Drive sleeve; 5. Drive assembly; 51. Support shaft; 52. Steering wheel; 53. Drive wheel; 54. Friction disc; 6. Support arm; 7. Bearing seat; 8. Double-sided drive belt; 9. Fixed shaft; 10. Fixed groove; 11. Adjustment assembly; 111. Spring; 112. Drive half shaft; 113. Limit hole; 12. Oil filling hole; 13. Open ring; 14. First connecting block; 15. Second connecting block; 16. Connecting plate; 17. Waist-shaped hole; 18. First bolt. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] refer to Figure 1 and Figure 3 , a rotary drive device for a two-station cup mold of a printing machine provided by the present invention, comprising a frame 1, an indexer output shaft 2 vertically arranged on a side of the frame 1, a cup mold assembly 3 arranged on the indexer output shaft 2, the cup mold assembly 3 comprising a cup mold mounting ring 31, a plurality of cup mold shafts 32 radially fixed on the cup mold mounting ring 31, and a cup mold 33 rotatably connected to each cup mold shaft 32, the cup mold shaft 32 is a cylindrical structure, one end of which is fixed on the cup mold mounting ring 31 and fastened by a nut, and the cup mold mounting ring 31 is fixed on the output end of the indexer output shaft 2;

[0029] A driving sleeve 4, the driving sleeve 4 is mounted on the outer shell of the indexer output shaft 2, and the driving sleeve 4 and the indexer output shaft 2 rotate relative to each other;

[0030] Two driving components 5 are used to drive the cup mold 33 to make intermittent motion. In the present invention, one driving component 5 is located at the 12 o'clock position (corona station) of the cup mold mounting ring 31, and the other driving component 5 is located at the 6 o'clock position (curing station) of the cup mold mounting ring 31. The driving component 5 includes a support shaft 51, a steering wheel 52, a driving wheel 53 and a friction disk 54. One end of the support shaft 51 is arranged on the frame 1, and the steering wheel 52 is installed on one side of the support shaft 51 through a support arm 6. A bearing seat 7 for installing the driving wheel 53 is arranged on the side of the support shaft 51 opposite to the support arm 6. The driving wheel 53 is arranged on one side of the bearing seat 7, and the friction disk 54 is arranged on the other side of the bearing seat 7 and rotates synchronously with the driving wheel 53. The friction disk 54 is in friction contact with the cup mold 33 moved to the position of the driving component 5; wherein the bearing seat 7 is installed at one end of the support shaft 51 away from the frame 1, the support arm 6 is located on the side of the bearing seat 7 close to the frame 1, and the axis of the steering wheel 52 installed on the support arm 6 is in the same straight line as the axis of the driving wheel 53 installed on the bearing seat 7;

[0031] The double-sided driving belt 8 connects the two driving components 5, and the double-sided driving belt 8 is simultaneously sleeved on the steering wheel 52 and the driving wheel 53 in the two driving components 5, and the outer surface of the double-sided driving belt 8 is in friction contact with the outer surface of the driving sleeve 4.

[0032] Its working principle: the indexer output shaft 2 drives the cup mold assembly 3 to rotate under the action of the driving device. When the indexer output shaft 2 rotates, the driving sleeve 4 sleeved on the indexer output shaft 2 moves relative to it. Since the double-sided driving belt 8 is simultaneously sleeved on the steering wheel 52 and the driving wheel 53 in the two driving assemblies 5, the outer surface of the double-sided driving belt 8 is in friction contact with the outer surface of the driving sleeve 4. When the driving sleeve 4 rotates, the steering wheel 52 and the driving wheel 53 in the two driving assemblies 5 are driven to rotate through the double-sided driving belt 8, thereby driving the friction disk 54 connected to the driving wheel 53 to rotate, wherein the steering wheel 52 guides and limits the double-sided driving belt 8 to prevent the double-sided driving belt 8 from deviating during transmission; further, since one of the driving assemblies 5 is located at the twelve o'clock position (corona station) of the cup mold mounting ring 31, and the other driving assembly 5 is located at the six o'clock position (curing station) of the cup mold mounting ring 31, when the cup mold 33 sleeved with the cup body is on the indexer output shaft 2 When it moves to the twelve o'clock (corona station) position or the six o'clock (curing station) position under the action of the friction disk 54 set at the twelve o'clock (corona station) position or the six o'clock (curing station) position, the friction disk 54 set at the twelve o'clock (corona station) position or the friction disk 54 set at the six o'clock (curing station) position is in friction contact with the lower end of the cup mold 33, and the cup mold 33 is driven to rotate under the action of the friction force. At this time, the cup body mounted on the cup mold 33 rotates synchronously with the cup mold 33, and the inner wall of the cup body is not easily scratched during rotation; since the driving component 5 is not set at other positions, Therefore, when the cup body is mounted on the cup mold 33 that moves to the half past ten (loading station) position, the cup mold 33 that moves to the half past ten (loading station) position does not rotate, and when the cup body is mounted, scratches are not easy to be generated on the inner wall of the cup body. Similarly, the cup mold 33 that moves to the nine o'clock position (finished product delivery station) does not rotate, and when the cup body is separated from the cup mold 33, scratches are not easy to be generated on the inner wall of the cup body, thereby improving the aesthetics of the cup body and the yield of the cup body, and the intermittent movement of the cup mold 33 is realized by the two driving components 5.

[0033] Further, refer to Figure 4 and Figure 5A fixed shaft 9 is fixedly arranged on the end surface of the driving wheel 53 close to the bearing seat 7, and the fixed shaft 9 passes through the bearing seat 7. A fixed groove 10 is arranged on the end surface of the fixed shaft 9 away from the driving wheel 53. The fixed groove 10 extends to the inside of the driving wheel 53 along the axial direction of the fixed shaft 9. An adjusting component 11 for adjusting the axial movement of the friction disk 54 along the fixed shaft 9 is arranged in the fixed groove 10. The adjusting component 11 includes a spring 111 and a driving half shaft 112. The driving half shaft 112 is slidably connected in the fixed groove 10. The spring 111 is horizontally arranged in the fixed groove 10, and one end of the spring 111 abuts against the driving half shaft 112. On the end face in the fixed groove 10, the other end of the spring 111 abuts against the inner end face of the fixed groove 10, and a limiting hole 113 for limiting the moving distance of the driving half shaft 112 is provided on the driving half shaft 112, and a fixing pin for fixing the driving half shaft 112 in the fixed groove 10 is provided in the limiting hole 113. Due to the position deviation of several cup mold shafts 32 installed on the cup mold mounting ring 31, the driving half shaft 112 is driven to move along the length direction of the fixed groove 10 under the action of the spring force, so that the friction end face of the friction disk 54 connected to the driving half shaft 112 is always in contact with the lower part of the cup mold 33.

[0034] Further, refer to Figure 4 and Figure 5 An oil filling hole 12 is provided on the end surface of the driving wheel 53 away from the bearing seat 7. The oil filling hole 12 is connected to the fixed groove 10. Lubricating oil is injected into the fixed groove 10 through the oil filling hole 12. When the driving half shaft 112 moves axially along the fixed groove 10, the friction between the driving half shaft 112 and the fixed groove 10 is reduced by the lubricating oil, thereby reducing the wear between the driving half shaft 112 and the fixed groove 10 and extending the service life.

[0035] Further, refer to Figure 1 and Figure 2 , the connecting ends of the support arm 6 and the bearing seat 7 and the support shaft 51 are all provided with an open ring 13, and the first connecting block 14 and the second connecting block 15 are respectively provided on both sides of the opening of the open ring 13, and the first connecting block 14 and the second connecting block 15 are connected by fastening bolts. The open ring 13 is convenient for connecting the support arm 6 and the bearing seat 7 to the support shaft 51, and when the double-sided drive belt 8 works for a long time, its tensioning performance is reduced, and the tension of the double-sided drive belt 8 can be adjusted by adjusting the position of the steering wheel 52 and the driving wheel 53, so that the steering wheel 52 and the driving wheel 53 are always in contact with the inner surface of the double-sided drive belt 8 to prevent the double-sided drive belt 8 from slipping during work, and the position of the tensioning wheel 52 and the driving wheel 53 can be conveniently adjusted through the open ring 13.

[0036] Further, refer to Figure 1A connecting plate 16 is provided at one end of the support shaft 51, and a waist-shaped hole 17 is provided on the connecting plate 16. A first bolt 18 is provided in the waist-shaped hole 17. The connecting plate 16 is connected to the frame 1 through the first bolt 18. The first bolt 18 is used to facilitate the installation of the connecting plate 16 on the frame 1. The bolt hole on the connecting plate 16 adopts a waist-shaped hole 17, which is convenient for adjusting the position of the driving component 5 connected to the connecting plate 16, so that the outer surface of the double-sided driving belt 8 connecting the two driving components 5 can better fit the outer surface of the driving sleeve 4.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary drive device for a two-station cup mold of a printing press, comprising a frame, an indexer output shaft vertically arranged on a side of the frame, a cup mold assembly arranged on the indexer output shaft, the cup mold assembly comprising a cup mold mounting ring, a plurality of cup mold shafts radially fixed to the cup mold mounting ring, and a cup mold rotatably connected to each of the cup mold shafts, the cup mold mounting ring being fixed to the output end of the indexer output shaft; A driving sleeve, the driving sleeve is mounted on the housing of the output shaft of the indexer, and the driving sleeve and the output shaft of the indexer rotate relative to each other; Features: It also includes two driving components for driving the cup mold to make intermittent motion, the driving components including a support shaft, a steering wheel, a driving wheel and a friction disk, one end of the support shaft is arranged on the frame, the steering wheel is installed on one side of the support shaft through a support arm, a bearing seat for installing the driving wheel is arranged on the side of the support shaft opposite to the support arm, the driving wheel is arranged on one side of the bearing seat, the axis of the steering wheel is parallel to the axis of the driving wheel, the friction disk is arranged on the other side of the bearing seat and rotates synchronously with the driving wheel, and the friction surface of the friction disk is in friction contact with the cup mold moved to the position of the driving component; A double-sided driving belt connecting the two driving assemblies, wherein the double-sided driving belt is simultaneously sleeved on the steering wheels and the driving wheels in the two driving assemblies, and the outer surface of the double-sided driving belt is in frictional contact with the outer surface of the driving sleeve; A fixed shaft is fixedly arranged on the end surface of the driving wheel close to the bearing seat, and the fixed shaft passes through the bearing seat, and a fixed groove is arranged on the end surface of the fixed shaft away from the driving wheel, and the fixed groove extends along the axial direction of the fixed shaft to the inside of the driving wheel, and an adjustment component for adjusting the axial movement of the friction disk along the fixed shaft is arranged in the fixed groove, and the adjustment component includes a spring and a driving half shaft, the driving half shaft is slidably connected in the fixing groove, and one end of the driving half shaft outside the fixing groove is fixedly connected to the friction disk, the spring is horizontally arranged in the fixing groove, one end of the spring abuts against the end surface of the driving half shaft in the fixing groove, and the other end of the spring abuts against the inner end surface of the fixing groove, and a limiting hole for limiting the moving distance of the driving half shaft is arranged on the driving half shaft, and a fixing pin for fixing the driving half shaft in the fixing groove is arranged in the limiting hole; The support arm and the bearing seat are connected to the support shaft with an open ring, and the first connecting block and the second connecting block are respectively provided on both sides of the opening of the open ring, and the first connecting block and the second connecting block are connected by fastening bolts.

2. The rotary drive device for the two-station cup mold of the printing press according to claim 1, characterized in that: A connecting plate is arranged at one end of the supporting shaft, a waist-shaped hole is arranged on the connecting plate, a first bolt is arranged in the waist-shaped hole, and the connecting plate is connected to the frame through the first bolt.

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