Phase adjustment mechanism for paper pulling roller and chopping knife

Abstract

The present invention belongs to the technical field of printing press equipment, and relates to a phase adjustment mechanism for a paper pulling roller and a chopper, comprising a frame, a connecting shaft is rotatably arranged on the frame, a cam gear is installed on the connecting shaft corresponding to the shaft diameter on one side of the frame, and a cam is installed on the connecting shaft corresponding to the shaft diameter on the other side of the frame; a harmonic reducer is also installed on the frame, a front transmission gear and a rear transmission gear are installed on the harmonic reducer, and the harmonic reducer includes a wave generator, and the wave generator rotates to achieve phase adjustment of the front transmission gear and the rear transmission gear; a bridge gear is also installed on the frame, and the bridge gear transmits the power of the cam gear to the front transmission gear. The adjustment mechanism can effectively improve the convenience of phase adjustment between the paper pulling roller and the chopper, improve the rotation accuracy of the paper pulling roller, and effectively improve the folding accuracy of the folding machine.

Description

Technical Field

[0001] The invention belongs to the technical field of printing machine equipment and relates to a phase adjustment mechanism for a paper pulling roller and a chopping knife. Background Art

[0002] The original front and rear clamping rollers are split, and the left ends of the front and rear clamping rollers are bolted to the two shaft heads on the left end. The right ends of the front and rear clamping rollers are bolted to the two shaft heads on the left end through the pressure plate. When the pressure plate bolts are loosened, the front and rear clamping rollers can rotate around their right shaft heads. The front and rear clamping rollers are equipped with pressure strips. When the phase of the pressure strips of the front and rear clamping rollers and the chopper needs to be adjusted, loosen the pressure plate bolts, rotate the front and rear clamping rollers to the required position, and tighten the pressure plate bolts. The adjustment amount of this mechanism is difficult to control, and it is time-consuming and laborious to adjust. Because the clamping roller is split, its parts processing accuracy is high. Even if the parts processing accuracy is high, the rotation accuracy of the clamping roller is low after assembly. Reduced the folding accuracy of the folding machine. Summary of the invention

[0003] In view of the above problems, the present invention provides a phase adjustment mechanism for a paper pulling roller and a chopper, which can effectively improve the convenience of phase adjustment between the paper pulling roller and the chopper, improve the rotation accuracy of the paper pulling roller, and effectively improve the folding accuracy of the folding machine.

[0004] According to the technical solution of the present invention: a paper pulling roller and chopping knife phase adjustment mechanism, characterized in that: it includes a frame, a connecting shaft is rotatably arranged on the frame, a cam gear is installed on the connecting shaft corresponding to the shaft diameter on one side of the frame, and a cam is installed on the connecting shaft corresponding to the shaft diameter on the other side of the frame;

[0005] A harmonic reducer is also installed on the frame, on which a front transmission gear and a rear transmission gear are installed, and the harmonic reducer includes a wave generator, and the wave generator rotates to achieve phase adjustment of the front transmission gear and the rear transmission gear; a bridge gear is also installed on the frame, and the bridge gear transmits the power of the cam gear to the front transmission gear;

[0006] The frame is also provided with a left transition gear and a right transition gear which mesh with each other, and the right transition gear meshes with the rear transmission gear. The upper part of the frame is also rotatably provided with a left clamping roller shaft and a right clamping roller. The left clamping roller shaft is provided with a left clamping roller and a left clamping roller gear, and the right clamping roller and a right clamping roller gear are provided on the right clamping roller. The left clamping roller gear meshes with the left transition gear, and the right clamping roller gear meshes with the right transition gear. A left pressure strip is provided on the left clamping roller, and a right pressure strip is provided on the right clamping roller. When working, the cutting edge of the machete falls between the left pressure strip and the right pressure strip.

[0007] A chopper shaft is rotatably arranged on the upper part of the frame, a chopper is mounted on the chopper shaft, and a connecting rod portion of the chopper matches with a cam surface.

[0008] As a further improvement of the present invention, a motor is installed on the frame, and a motor gear installed on the motor output shaft is meshed with the cam gear.

[0009] As a further improvement of the present invention, the bridge gear is provided with two gear parts, one of which is meshed with the cam gear, and the other is meshed with the front transmission gear.

[0010] As a further improvement of the present invention, a hand wheel is installed at the outer end of the harmonic shaft of the harmonic reducer, and the harmonic shaft is locked or loosened by a set screw.

[0011] The technical effect of the present invention is that the product structure design of the present invention is reasonable and ingenious. By changing the front and rear paper clamping rollers from split type to integrated type, the processing difficulty is reduced, the rotation accuracy is improved, the assembly error is reduced, and the rotation accuracy of the paper clamping roller is effectively improved. A harmonic reducer is added between the transmission gear of the paper clamping roller and the chopper. By rotating the wave generator of the harmonic reducer, the phase relationship between the paper pulling roller and the chopper can be adjusted. It is not only convenient and reliable to adjust, but also the adjustment amount is easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 for Figure 1 AA section view.

[0014] Figure 3 for Figure 1 Middle BB section view.

[0015] Figure 4 for Figure 3 CC section view.

[0016] Figure 5 for Figure 3 Middle DD section view.

[0017] Figure 6 for Figure 3 EE section view. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figures 1 to 6It includes a left transition gear 1, a right transition gear 2, a left paper clamping roller 3, a left paper clamping roller gear 4, a left pressure bar 5, a right pressure bar 6, a right paper clamping roller gear 7, a right paper clamping roller 8, a harmonic reducer 9, a bridge gear 10, a cam 11, a cam gear 12, a chopper 13, a chopper shaft 14, a motor gear 15, a front transmission gear 16, a rear transmission gear 17, a wave generator 18, a connecting shaft 19, a set screw 20, a hand wheel 21, etc.

[0020] like Figures 1 to 6 As shown, the present invention is a paper pulling roller and chopping knife phase adjustment mechanism, including a frame, on which a connecting shaft 19 is rotatably arranged, a cam gear 12 is installed on the connecting shaft 19 corresponding to the shaft diameter on one side of the frame, and a cam 11 is installed on the connecting shaft 19 corresponding to the shaft diameter on the other side of the frame.

[0021] like Figure 2 As shown, a harmonic reducer 9 is also installed on the frame, and a harmonic reducer 9 is also installed on the frame. The harmonic reducer 9 is installed with a front transmission gear 16 and a rear transmission gear 17. The harmonic reducer 9 includes a wave generator 18, and the wave generator 18 rotates to achieve phase adjustment of the front transmission gear 16 and the rear transmission gear 17; a bridge gear 10 is also installed on the frame, and the bridge gear 10 transmits the power of the cam gear 12 to the front transmission gear 16; a bridge gear 10 is also installed on the frame, and the bridge gear 10 transmits the power of the cam gear 12 to the front transmission gear 16; a hand wheel 21 is installed at the outer end of the harmonic shaft of the harmonic reducer 9, and the harmonic shaft is locked or loosened by a set screw 20. When the set screw 20 is loosened and the hand wheel 21 is rotated, the wave generator 18 causes the rear transmission gear 16 and the front transmission gear 17 to rotate and generate a differential. The harmonic reducer 9 is a mature product in the prior art, and the present invention does not make any structural improvements to it. It is directly installed in the product of the present invention according to the use requirements.

[0022] like Figures 3-5 As shown, the frame is also equipped with a left transition gear 1 and a right transition gear 2 that mesh with each other, and the right transition gear 2 meshes with the rear transmission gear 17. The upper part of the frame is also rotatably provided with a left clamping roller shaft and a right clamping roller. The left clamping roller shaft is provided with a left clamping roller 3 and a left clamping roller gear 4, and the right clamping roller is provided with a right clamping roller 8 and a right clamping roller gear 7. The left clamping roller gear 4 meshes with the left transition gear 1, and the right clamping roller gear 7 meshes with the right transition gear 2. A left pressure strip 5 is provided on the left clamping roller 3, and a right pressure strip 6 is provided on the right clamping roller 8. When working, the cutting edge of the machete 13 falls between the left pressure strip 5 and the right pressure strip 6.

[0023] A chopper shaft 14 is rotatably arranged on the upper part of the frame, and a chopper 13 is installed on the chopper shaft 14 . The connecting rod portion of the chopper 13 matches with the surface of the cam 11 .

[0024] like Figure 1 , 2As shown, the machete 13 is hinged on the machete shaft 14, and the machete 13 can swing around the machete shaft 14. During specific use, the cam gear 12 is key-connected to the connecting shaft 19, and the cam 11 is fastened to the connecting shaft 19 by bolts; when the cam gear 12 rotates, the machete 13 swings back and forth around the machete shaft 14 along the trajectory of the cam 11.

[0025] like Figure 2 As shown, a motor is installed on the frame, and a motor gear 15 installed on the motor output shaft is meshed with the cam gear 12.

[0026] Figure 2 As shown, the carrier gear 10 is provided with two gear parts, one of which is meshed with the cam gear 12 , and the other is meshed with the front transmission gear 16 .

[0027] like Figures 1 to 6 As shown, when the product of the present invention is working, the motor gear 15 meshes with the cam gear 12, the cam gear 12 meshes with the bridge gear 10, the bridge gear 10 meshes with the front transmission gear 16, the rear transmission gear 17 meshes with the right transition gear 2, and the right transition gear 2 meshes with the left transition gear 1. The right transition gear 2 meshes with the right clamping roller gear 7, and the left transition gear 1 meshes with the left clamping roller gear 4. When the motor gear 15 rotates, the left clamping roller 3 and the right clamping roller 8 rotate in opposite directions, and the chopper 13 swings back and forth around the chopper shaft 14 along the trajectory of the cam 11.

[0028] The phase adjustment process of the product of the present invention is as follows: when the phase of the left pressure strip 5 on the left paper clamping roller 3 and the right pressure strip 6 on the right paper clamping roller 8 with the lowest point of the chopper 13 needs to be adjusted, loosen the set screw 20 on the harmonic reducer 9, turn the hand wheel 21 wave generator 18 to rotate the rear transmission gear 16 and the front transmission gear 17 and generate a differential to the required phase α°, when the left pressure strip 5 on the left paper clamping roller 3 and the right pressure strip 6 on the right paper clamping roller 8 with the lowest point of the chopper 13 reach the required phase α°, tighten the set screw 20.

Claims

1. A paper pulling roller and chopping knife phase adjustment mechanism, characterized in that: It comprises a frame, a connecting shaft (19) is rotatably arranged on the frame, a cam gear (12) is installed on the connecting shaft (19) corresponding to the shaft diameter on one side of the frame, and a cam (11) is installed on the connecting shaft (19) corresponding to the shaft diameter on the other side of the frame; A harmonic reducer (9) is also mounted on the frame, a front transmission gear (16) and a rear transmission gear (17) are mounted on the harmonic reducer (9), and the harmonic reducer (9) includes a wave generator (18), and the wave generator (18) rotates to achieve phase adjustment of the front transmission gear (16) and the rear transmission gear (17); a bridge gear (10) is also mounted on the frame, and the bridge gear (10) transmits power from the cam gear (12) to the front transmission gear (16); The frame is also provided with a left transition gear (1) and a right transition gear (2) meshing with each other, the right transition gear (2) meshing with the rear transmission gear (17), and the upper part of the frame is also provided with a left clamping roller shaft and a right clamping roller for rotation, the left clamping roller shaft is provided with a left clamping roller (3) and a left clamping roller gear (4), the right clamping roller (8) and a right clamping roller gear (7) are provided with the right clamping roller, the left clamping roller gear (4) meshing with the left transition gear (1), the right clamping roller gear (7) meshing with the right transition gear (2), the left clamping roller (3) is provided with a left pressure strip (5), and the right clamping roller (8) is provided with a right pressure strip (6), and when working, the cutting edge of the chopper (13) falls between the left pressure strip (5) and the right pressure strip (6); A chopper shaft (14) is rotatably arranged on the upper part of the frame, a chopper (13) is mounted on the chopper shaft (14), and a connecting rod portion of the chopper (13) is matched with a surface of the cam (11).

2. The paper pulling roller and chopping knife phase adjustment mechanism according to claim 1, characterized in that: A motor is mounted on the frame, and a motor gear (15) mounted on the motor output shaft meshes with the cam gear (12).

3. The paper pulling roller and chopping knife phase adjustment mechanism according to claim 1, characterized in that: The bridge gear (10) is provided with two gear parts, one of which is meshed with the cam gear (12), and the other is meshed with the front transmission gear (16).

4. The paper pulling roller and chopping knife phase adjustment mechanism according to claim 1, characterized in that: A hand wheel (21) is installed at the outer end of the harmonic shaft of the harmonic reducer (9), and the harmonic shaft is locked or loosened by a set screw (20).

Images