Automatic book replacing device and automatic book replacing method for rolling folding type folding machine

Abstract

According to the automatic book replacing device for the rolling folding type folding machine, a servo motor drives a threaded shaft to rotate, the threaded shaft is sleeved with a harmonic differential speed reducer, and the two sides of the harmonic differential speed reducer are connected with a roller meshing gear and a sector plate meshing gear; a second supporting plate is connected to the outer wall of the cam patch, a cylinder connector is hinged to the second supporting plate, the cylinder connector is connected with a cylinder, and the technical problems that in the prior art, manual folding is tedious and time-consuming to replace books are solved. The invention discloses an automatic book changing method for a rolling folding type folding machine. A servo motor works to drive a harmonic differential speed reducer to rotate; the harmonic differential speed reducer drives a roller meshing gear and a sector plate meshing gear to rotate at different rotating speeds, drives a roller and a sector plate to rotate at different rotating speeds, and changes the distance from a folding knife to a clamping plate. The air cylinder stretches out and draws back to drive the cam patch to rotate, a cam curve needed by current copy is reserved, and then automatic copy changing can be completed.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent printing, and in particular relates to an automatic book-changing device for a roll-folding folding machine, and also relates to an automatic book-changing method for a roll-folding folding machine. Background Art

[0002] At present, there are fewer and fewer large-scale and single printing jobs in the printing market, and more and more small-scale and different-specification printing jobs, which means that folding machines need to change different folding formats from time to time. With the shortening of printing period, less cost and manpower investment, the technology and auxiliary products involved in the format conversion of folding machines also need to be continuously innovated. The original format conversion requires opening the transmission box of the folding lower frame, manually disengaging the gears and hubs of the folding roller and the fan plate, and then manually adjusting the rotation of the fan plate. It requires the cooperation of multiple people and repeated adjustments to ensure that the folding knife position is on the correct format size line, and it is also necessary to manually replace the cam of the corresponding format, which is cumbersome and time-consuming to adjust. Therefore, a device that allows the folding machine to quickly change the format is very necessary. Summary of the invention

[0003] The first purpose of the present invention is to provide an automatic booklet changing device for a roll-folding folding machine, which solves the technical problem of cumbersome and time-consuming manual booklet folding and booklet changing adjustments in the prior art.

[0004] A second object of the present invention is to provide an automatic book-changing method for a roll-folding machine.

[0005] The first technical solution adopted by the present invention is an automatic opening device for a roll-folding folding machine, including a threaded shaft and a servo motor, the servo motor drives the threaded shaft to rotate, a harmonic differential reducer is sleeved on the threaded shaft, and roller meshing gears and fan plate meshing gears are respectively connected on both sides of the harmonic differential reducer, the roller meshing gears and fan plate meshing gears are used to mesh with the roller gears and fan plate gears in the roll-folding folding machine; it also includes a cam patch block sleeved on the cam sleeve in the roll-folding folding machine, the outer wall of the cam sleeve is connected to a second support plate, the second support plate is hinged with a cylinder joint, and the cylinder joint is connected to a cylinder.

[0006] The first technical solution of the present invention is also characterized in that: The output end of the servo motor is connected to a reducer, and the output end of the reducer is connected to a driving gear; a driven gear is fixedly installed circumferentially on the threaded shaft; the axis of the servo motor and the threaded shaft are parallel, and the driving gear and the driven gear are meshed with each other.

[0007] The outer periphery of the threaded shaft near the driving gear is provided with a first shaft shoulder and a retaining ring, and the retaining ring is fixedly connected to the threaded shaft; the outer periphery of the threaded shaft located between the first shaft shoulder and the retaining ring is provided with an external thread, and a limit plate is threadedly connected to the external thread, and a first support plate is connected to the limit plate, the first support plate is sleeved on the threaded shaft, a guide shaft is sleeved on the top of the first support plate, and the first support plate is slidably connected to the guide shaft.

[0008] A second shoulder is provided on the threaded shaft away from the first shoulder, a bearing round nut is fixedly connected to the end of the threaded shaft close to the second shoulder, the roller meshing gear, the harmonic differential reducer and the sector plate meshing gear are arranged in sequence along the second shoulder toward the bearing round nut, a spacer ring sleeved on the threaded shaft is provided between the sector plate meshing gear and the bearing round nut, an end plate for support is circumferentially sleeved on the bearing round nut, and a pressure cover abutting against the bearing round nut is fixedly connected to the side wall of the end plate.

[0009] The second technical solution adopted by the present invention is an automatic book-changing method for a roll-folding folding machine, which adopts the above-mentioned automatic book-changing device for a roll-folding folding machine, and specifically comprises the following steps: S1: The servo motor drives the threaded shaft to rotate, which further drives the harmonic differential reducer to rotate; S2: The harmonic differential reducer drives the drum meshing gear and the sector plate meshing gear to rotate at different speeds according to the transmission ratio; S3: The roller meshing gear and the sector plate meshing gear respectively drive the roller and the sector plate to rotate at different speeds, thereby changing the distance from the folding knife to the clamping plate; S4: The cam patch is driven to rotate by the cylinder extension and retraction, leaving the cam curve required for the current book opening, and the automatic book opening change can be completed.

[0010] The beneficial effects of the present invention are: It is suitable for various roll-folding folding machines. It can be installed in the transmission box of the lower frame of the folding machine and meshed with the folding roller gear and the fan-shaped plate gear. It has a simple structure, high transmission accuracy, easy installation, easy operation and small footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the installation structure of the automatic page-changing device for a roll-folding folding machine and the roll-folding folding machine of the present invention; Figure 2 It is a schematic diagram of the connection structure of the cylinder and the cam patch block in the automatic opening device of the roll-folding folding machine of the present invention; Figure 3 The invention is a schematic diagram of the connection structure of a threaded shaft and a harmonic differential reducer in an automatic opening device for a roll-folding folding machine.

[0012] In the figure, 1. servo motor, 2. reducer, 3. driving gear, 4. motor seat, 5. driven gear, 6. threaded shaft, 7. first support plate, 8. guide shaft, 9. limit plate, 10. flat key, 11. spacer ring, 12. end plate, 13. pressure cover, 14. roller meshing gear, 15. sector plate meshing gear, 16. harmonic differential reducer, 17. cylinder, 18. support, 19. cam patch, 20. folding knife cam, 21. splint cam, 22. folding knife, 23. splint, 24. cam seat, 25. cam sleeve, 26. pressure block, 27. cylinder joint, 28. pin, 29. second support plate, 30. bearing, 31. transmission surface wall panel, 32. roller gear, 33. sector plate gear, 34. retaining ring, 35. bearing round nut, 36. operating surface wall panel. DETAILED DESCRIPTION

[0013] 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 32 embodiments described 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 making creative work are within the scope of protection of this application.

[0014] Example 1 like Figure 1-3 As shown, the automatic opening device for a roll-folding folding machine disclosed in this embodiment includes a threaded shaft 6 and a servo motor 1. The servo motor 1 drives the threaded shaft 6 to rotate. A harmonic differential reducer 16 is sleeved on the threaded shaft 6. The two sides of the harmonic differential reducer 16 are respectively connected to a roller meshing gear 14 and a fan plate meshing gear 15. The roller meshing gear 14 and the fan plate meshing gear 15 are used to mesh with the roller gear 32 and the fan plate gear 33 in the roll-folding folding machine; it also includes a cam patch block 19 sleeved on the cam sleeve 25 in the roll-folding folding machine, the outer wall of the cam sleeve 25 is connected to a second support plate 29, the second support plate 29 is hinged to a cylinder joint 27, and the cylinder joint 27 is connected to the cylinder 17.

[0015] In this embodiment, the servo motor 1 serves as a power source, and the threaded shaft 6 is connected to the harmonic differential reducer 16 through a flat key and transmits power, driving the harmonic differential reducer 16 to rotate, thereby causing the roller meshing gear 14 to rotate relative to the fan plate meshing gear 15, thereby achieving the purpose of changing the distance from the folding knife 22 to the clamping plate 23, and then the cam patch block 19 is driven by the cylinder 17 to extend and retract, leaving the cam curve required for the current book opening, thereby completing the automatic book opening change. Specifically, a servo motor 1 is used to drive the reducer 2, and the reducer 2 drives the driving gear 3 to rotate and transmits it to the driven gear 5. The driven gear 5 drives the threaded shaft 6 to rotate. The threaded shaft 6 is connected to the harmonic differential reducer 16 by a flat key 10, and can drive the harmonic differential reducer 16 to rotate. According to the transmission ratio of driving the harmonic differential reducer 16 to rotate, the roller meshing gear 14 is rotated relative to the fan plate meshing gear 15. The roller meshing gear 14 and the fan plate meshing gear 15 are connected by bearings 30 and the threaded shaft 6, and then the roller meshing gear 14 and the fan plate meshing gear 15 are respectively fixed at both ends of the harmonic differential reducer 16 by bolts, and the fan plate meshing gear 15 and the roller meshing gear 15 are meshed with the fan plate gear 33 and the roller gear 32, so that the roller gear on the folding roller rotates, and the fan plate can be controlled to rotate relative to the folding roller, thereby changing the distance from the folding knife to the clamping plate.

[0016] In the specific use process, the device is installed on the transmission surface wallboard 31 of the lower frame of the roll-folding folding machine, the servo motor 1, the driving gear 3 and the driven gear 5 are installed on the left side of the transmission surface wallboard 31, the servo motor 1 can be installed through the motor seat 4, and the fan plate meshing gear 15, the roller meshing gear 14 and the harmonic differential reducer 16 are installed on the right side of the transmission surface wallboard 31. And according to the transmission ratio of the harmonic differential reducer 16, the gear transmission ratio and the roller diameter and other parameters, it can be calculated how much the folding knife 22 rotates relative to the clamping plate 23 when the servo motor 1 rotates one circle, so the number of circles that the servo motor 1 needs to rotate for different book openings can be set in the program, so that the folding knife 22 can be in the corresponding book opening position, and then the cylinder 17 is used to extend and retract the cam patch 19 to leave the cam curve required for the current book opening. The cam seat 24 is sleeved on the folding roller shaft, and the cam seat 24 is fixed to the right side of the operating surface wall panel 36 by a pressing block 26, and a cam having cam curves required for all book openings is fixed on the cam seat 24, and the cam sleeve 25 is sleeved on the cam seat 24 so that it can rotate around the cam seat 24, and one end of the cylinder 17 is connected to the cam sleeve 25 using the second support plate 29, the pin shaft 28 and the cylinder joint 27, and the other end of the cylinder 17 is fixed to the right side of the operating surface wall panel 36. In this way, the rotation of the cam sleeve 25 can be controlled by the extension and retraction of the cylinder 17, so that the cam patch block 19 can cover different positions of the cam, and then the extension and retraction of the cylinder 17 is controlled by the solenoid valve. In this way, when folding different book openings, the cam patch block 19 can be directly controlled by the cylinder 17 to change the cam curve to complete the automatic book opening change. In summary, in this embodiment, the automatic book changing device for a roll-folding folding machine is installed on the transmission surface wall panel 31 and the operating surface wall panel 36, and then the cam structure of the folding roller is changed to a structure with a cam patch 19 and a cylinder 17, which can be driven by a servo motor 1, and the distance from the roller folding knife 22 to the clamping plate 23 is changed through parts such as gears and harmonic differential reducer 16, thereby completing automatic book changing.

[0017] Example 2 On the basis of Example 1, the output end of the servo motor 1 is connected to the reducer 2, and the output end of the reducer 2 is connected to the driving gear 3; the threaded shaft 6 is circumferentially fixed with a driven gear 5; the axis of the servo motor 1 and the threaded shaft 6 are parallel, and the driving gear 3 and the driven gear 5 are meshed with each other.

[0018] In this embodiment, the reducer 2 is used to reduce the speed of the servo motor 1, while increasing the output torque and improving the rotation accuracy. The reducer 2 plays a transitional role between the servo motor 1 and the load. When the load is too large, the reducer 2 will first bear a larger torque, thereby protecting the servo motor 1 from damage. If the servo motor 1 is directly connected to the load, the servo motor 1 may be seriously damaged when overloaded, and the use of the reducer 2 can reduce the burden on the motor and extend its service life.

[0019] Example 3 On the basis of Example 2, a first shoulder and a retaining ring 34 are provided on the outer periphery of the threaded shaft 6 near the driving gear 3, and the retaining ring 34 is fixedly connected to the threaded shaft 6; an external thread is provided on the outer periphery of the threaded shaft 6 between the first shoulder and the retaining ring 34, and a limit plate 9 is threadedly connected to the external thread, and a first support plate 7 is connected to the limit plate 9, the first support plate 7 is sleeved on the threaded shaft 6, a guide shaft 8 is sleeved on the top of the first support plate 7, and the first support plate 7 is slidably connected to the guide shaft 8.

[0020] In this embodiment, the guide shaft 8 is installed on the left side of the transmission surface wall plate 31, the first support plate 7 passes through the guide shaft 8 and is connected with the limit plate 9 by screws, the limit plate 9 has a screw hole and cooperates with the threaded shaft 6, when the threaded shaft 6 rotates, the limit plate 9 will move along the direction of the guide shaft 8, and the retaining ring 34 is fixed on the guide shaft 8 with a set screw, which acts as a mechanical limit to limit the displacement of the limit plate 9. When the limit plate 9 abuts against the retaining ring 34, the servo motor 1 automatically stops due to overload, and the mechanical limit is realized.

[0021] Example 4 On the basis of Example 3, a second shoulder is provided on the threaded shaft 6 away from the first shoulder, and a bearing round nut 35 is fixedly connected to the end of the threaded shaft 6 close to the second shoulder. The roller meshing gear 14, the harmonic differential reducer 16 and the fan-shaped plate meshing gear 15 are arranged in sequence along the second shoulder toward the bearing round nut 35. A spacer ring 11 sleeved on the threaded shaft 6 is provided between the fan-shaped plate meshing gear 15 and the bearing round nut 35. The bearing round nut 35 is circumferentially sleeved with an end plate 12 for support, and the side wall of the end plate 12 is fixedly connected with a pressure cover 13 abutting against the bearing round nut 35.

[0022] In this embodiment, the end plate 12 is installed on the outside of the transmission surface wall panel 31 through the support 18. The end plate 12 is parallel to the transmission surface wall panel 31. The threaded shaft 6 passes through the transmission surface wall panel 31 and the end plate 12. The spacer ring 11, the bearing round nut 35 and the pressure cover 13 are used on the end plate 12 to limit the threaded shaft 6 to prevent the threaded shaft 6 from axial displacement, but the threaded shaft 6 can rotate circumferentially.

[0023] Example 5 Based on the embodiment 2, the transmission ratio of the reducer 2 is 1:100. The gear ratio of the driving gear 3 and the driven gear 5 is 1:1. The transmission ratio of the harmonic differential reducer 16 is 100:102.

[0024] In this embodiment, the harmonic differential reducer 16 selects a transmission ratio of 100:102; the reducer 2 has a transmission ratio of 1:100; the driven gear 5 has a number of teeth Z1=80, the driving gear 3 has a number of teeth Z2=80, the drum meshing gear 14 has a number of teeth Z3=51, a module m=4, a helix angle β=23.9°, and a pitch circle diameter d14=m×Z3 / cosβ=223.133mm; the sector plate meshing gear 15 has a number of teeth Z4=50, a module m=4, a helix angle β=23.9°, and a pitch circle diameter d15=m*z4 / cosβ=218.758mm; the drum gear 32 has a number of teeth Z5=90, a module m=4, and a helix angle β=23.9°; the sector plate gear 33 has a number of teeth Z6=90, a module m=4, and a helix angle β=23. 9°, pitch circle diameter d33=m×z6 / cosβ=393.764mm; folding roller diameter D=398.36mm; assuming that when the harmonic differential reducer 16 rotates 1 circle, the harmonic differential reducer 16 will keep the roller meshing gear 14 stationary and let the fan plate meshing gear 15 rotate relatively, the displacement of the folding knife 22 = (102-100)×102×π×d15×D / 360 / 360≈1.094mm When converting from 32 to 24, taking the 546 specification folding machine as an example, the folding knife 22 needs to move 45.5mm, so the harmonic differential reducer 16 needs to rotate 45.5 / 1.094≈41.59r, and the servo motor 1 needs to rotate =41.59x100x80 / 80=4159r.

[0025] Example 6 The present invention also discloses an automatic booklet replacement method for a roll-folding folding machine, which uses the automatic booklet replacement device for a roll-folding folding machine described in embodiments 1 to 5, and specifically includes the following steps: S1: The servo motor 1 drives the threaded shaft 6 to rotate, which further drives the harmonic differential reducer 16 to rotate; S2: The harmonic differential reducer 16 drives the drum meshing gear 14 and the sector plate meshing gear 15 to rotate at different speeds according to the transmission ratio; S3: The roller meshing gear 14 and the sector plate meshing gear 15 respectively drive the roller and the sector plate to rotate at different speeds, thereby changing the distance from the folding knife 22 to the clamping plate 23; S4: The cam patch block 19 is driven to rotate by the cylinder 17 to leave the cam curve required for the current book opening, so that the automatic book opening can be completed.

[0026] The present invention aims to reduce the adjustment time and steps when changing the page size, reduce the labor intensity of operators, and improve labor productivity. In view of the problem that a roll-folding folding machine needs to be manually adjusted repeatedly to change different page sizes, the present invention is designed to drive the threaded shaft 6 by a servo motor 1 to drive the harmonic differential reducer 16, so that the fan plate meshing gear 15 and the roller meshing gear 15 installed at both ends of the harmonic differential reducer 16 can rotate relative to each other, thereby changing the distance from the roller folding knife 22 to the clamping plate 23, and using an electromagnetic valve to control the extension and retraction of the cylinder 17 to change the cam curve, so that the folding page size can be automatically changed.

[0027] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0028] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0029] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic re-opening device for a roll-folding folding machine, characterized in that: The invention comprises a threaded shaft (6) and a servo motor (1), wherein the servo motor (1) drives the threaded shaft (6) to perform rotational motion, a harmonic differential reducer (16) is sleeved on the threaded shaft (6), and roller meshing gears (14) and fan-shaped plate meshing gears (15) are respectively connected to the two sides of the harmonic differential reducer (16), and the roller meshing gears (14) and fan-shaped plate meshing gears (15) are used to mesh with roller gears (32) and fan-shaped plate gears (33) in a roll-folding folding machine; and further comprises a cam patch (19) sleeved on a cam sleeve (25) in the roll-folding folding machine, wherein the outer wall of the cam sleeve (25) is connected to a second support plate (29), and the second support plate (29) is hinged to a cylinder joint (27), and the cylinder joint (27) is connected to a cylinder (17).

2. The automatic re-opening device for a roll-folding folding machine according to claim 1, characterized in that: The output end of the servo motor (1) is connected to a reducer (2), and the output end of the reducer (2) is connected to a driving gear (3); a driven gear (5) is fixedly mounted on the threaded shaft (6) in the circumferential direction; the axes of the servo motor (1) and the threaded shaft (6) are parallel, and the driving gear (3) and the driven gear (5) are meshed with each other.

3. The automatic re-opening device for a roll-folding folding machine according to claim 2, characterized in that: The transmission ratio of the reducer (2) is 1:

100.

4. The automatic re-opening device for a roll-folding folding machine according to claim 3, characterized in that: The gear ratio between the driving gear (3) and the driven gear (5) is 1:

1.

5. The automatic re-opening device for a roll-folding folding machine according to claim 3, characterized in that: The transmission ratio of the harmonic differential reducer (16) is 100:

102.

6. The automatic re-opening device for a roll-folding folding machine according to claim 2, characterized in that: The threaded shaft (6) is provided with a first shaft shoulder and a retaining ring (34) on its outer periphery close to the driving gear (3), and the retaining ring (34) is fixedly connected to the threaded shaft (6); the threaded shaft (6) is provided with an external thread on its outer periphery located between the first shaft shoulder and the retaining ring (34), and a limit plate (9) is threadedly connected to the external thread, and a first support plate (7) is connected to the limit plate (9), and the first support plate (7) is sleeved on the threaded shaft (6), and a guide shaft (8) is sleeved on the top of the first support plate (7), and the first support plate (7) is slidably connected to the guide shaft (8).

7. The automatic re-opening device for a roll-folding folding machine according to claim 6, characterized in that: A second shoulder is provided on the threaded shaft (6) away from the first shoulder, a bearing nut (35) is fixedly connected to the end of the threaded shaft (6) close to the second shoulder, the roller meshing gear (14), the harmonic differential reducer (16) and the fan-shaped plate meshing gear (15) are arranged in sequence along the second shoulder in a direction toward the bearing nut (35), a spacer ring (11) sleeved on the threaded shaft (6) is provided between the fan-shaped plate meshing gear (15) and the bearing nut (35), an end plate (12) for support is sleeved on the bearing nut (35) in the circumferential direction, and a pressure cover (13) abutting against the bearing nut (35) is fixedly connected to the side wall of the end plate (12).

8. An automatic booklet-changing method for a roll-folding folding machine, using the automatic booklet-changing device for a roll-folding folding machine as claimed in claim 7, characterized in that: The specific steps include: S1: The servo motor (1) drives the threaded shaft (6) to rotate, which further drives the harmonic differential reducer (16) to rotate; S2: The harmonic differential reducer (16) drives the drum meshing gear (14) and the sector plate meshing gear (15) to rotate at different speeds according to the transmission ratio; S3: The roller meshing gear (14) and the fan-shaped plate meshing gear (15) respectively drive the roller and the fan-shaped plate to rotate at different speeds, thereby changing the distance between the folding knife (22) and the clamping plate (23); S4: The cylinder (17) is extended and retracted to drive the cam patch (19) to rotate, leaving a cam curve required for the current book opening, thereby completing the automatic book opening change.

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