CN209240651U - A large cylinder lifting mechanism of a printing machine - Google Patents

Abstract

The utility model provides a kind of swift elevating mechanism of printing machine, including two pieces of swift mounting plates hinged with two pieces of side plate upper ends of press rack respectively, swift is mounted between two pieces of swift mounting plates, a shaft is can be rotatably set on every block of side plate, the outer end of the shaft is provided with eccentric connecting column, the lower end of the bias connecting column and a strut is rotatablely connected, the upper end of the strut is pivotally connected with corresponding swift mounting plate, and by a motor driven, they are rotated synchronously two shafts.The swift elevating mechanism can reliably control swift lifting, and structure is simple, cost is relatively low.

Description

A large cylinder lifting mechanism of a printing machine

technical field

The utility model relates to the technical field of printing machines, in particular to a large cylinder lifting mechanism of a printing machine.

Background technique

In a general fixed printing machine, the lifting of the large cylinder is controlled by a screw rod and a servo system. The vacuum box or the large cylinder is connected through the screw rod, and the rotation of the screw rod is controlled by the servo system to drive the lifting of the parts. System control, high cost.

It can be seen that the prior art needs to be improved and enhanced.

Utility model content

In view of the shortcomings of the above-mentioned prior art, the purpose of this utility model is to provide a large cylinder lifting mechanism of a printing machine, which can reliably control the lifting of the large cylinder, and has a simple structure and low cost.

In order to achieve the above object, the utility model has taken the following technical solutions:

A lifting mechanism for a large cylinder of a printing machine, comprising two large cylinder mounting plates respectively hinged to the upper ends of two side plates of a printing machine frame, the large cylinder is installed between the two large cylinder mounting plates, each side plate A rotating shaft is rotatably provided, the outer end of the rotating shaft is provided with an eccentric connecting column, and the eccentric connecting column is rotatably connected with the lower end of a strut, and the upper end of the strut is pivotally connected with the corresponding large roller mounting plate, The two rotating shafts are driven by a motor to rotate synchronously.

In the large cylinder lifting mechanism of the printing press, each side plate is rotatably provided with a driven gear and a driving gear, the driving gear meshes with the driven gear and is used to drive the driven gear to rotate; the driven gear is eccentric A shaft hole is opened on the ground, and the rotating shaft passes through the shaft hole through the bearing.

In the large cylinder lifting mechanism of the printing press, the diameter of the driving gear is smaller than the diameter of the driven gear.

In the large cylinder lifting mechanism of the printing press, the output end of the motor is provided with a reducer, and a drive shaft is respectively connected between the output end of the reducer and the two rotating shafts; one end of the drive shaft passes through a universal joint The shaft is connected to the output end of the reducer, and the other end is connected to the inner end of the corresponding rotating shaft through a universal coupling.

In the lifting mechanism of the large cylinder of the printing press, the universal coupling and the rotating shaft are connected by keys, and the universal coupling can move axially relative to the rotating shaft.

In the large cylinder lifting mechanism of the printing press, the inner end of the driven gear is provided with a bearing cover, the bearing cover and the inner end of the driven gear are both provided with an oil cup, and the oil cup is connected to the shaft hole .

In the large cylinder lifting mechanism of the printing press, the upper end of the support rod is rotatably provided with a pivot shaft, and the inner end of the pivot shaft is connected to the large cylinder mounting plate through a bearing.

In the lifting mechanism of the large cylinder of the printing press, the driven gear is provided with an indicator line, and the side plate is provided with a scale line for marking the size of the embossing gap.

Beneficial effect:

The utility model provides a lifting mechanism for a large cylinder of a printing machine, which drives a rotating shaft to rotate through a motor, and an eccentric connecting column on the rotating shaft drives a strut to move up and down, and the strut drives the mounting plate of the large cylinder to swing up and down, so that the mounting plate mounted on the large cylinder The large roller on the mounting plate is lifted; the lifting control of the large roller is simple and reliable, and compared with the large roller lifting mechanism using a servo system, its structure is simpler and the cost is lower.

Description of drawings

Fig. 1 is a perspective view of the large cylinder lifting mechanism of the printing machine provided by the utility model.

Fig. 2 is a front view of the large cylinder lifting mechanism of the printing machine provided by the utility model.

Fig. 3 is a side view of the large cylinder lifting mechanism of the printing machine provided by the utility model.

Fig. 4 is a connection diagram among the rotating shaft, the driven gear and the strut in the lifting mechanism of the large cylinder of the printing machine provided by the utility model.

Fig. 5 is a cross-sectional view of A-A in Fig. 4 .

Fig. 6 is a B-B sectional view in Fig. 4 .

Detailed ways

The utility model provides a large cylinder lifting mechanism of a printing machine. In order to make the purpose, technical solution and effect of the utility model clearer and clearer, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Fig. 1-6, a kind of large cylinder elevating mechanism of printing machine provided by the utility model, comprises two large cylinder mounting plates 1 respectively hinged with the upper ends of two side plates 90 of the printing machine frame, the large cylinder (Fig. (not pictured in the middle) is installed between two large drum mounting plates, each side plate is rotatably provided with a rotating shaft 2, and the outer end of the rotating shaft is provided with an eccentric connecting column 2.1, which is connected to a support The lower end of the bar 3 is rotatably connected, the upper end of the strut is pivotally connected with the corresponding large roller mounting plate 1, and the two rotating shafts 2 are driven by a motor 4 to rotate synchronously.

When adjusting the height of the large roller, the rotating shaft is driven by the motor to rotate, and the eccentric connecting column on the rotating shaft drives the support rod to move up and down, and the support rod drives the large roller mounting plate to swing up and down, so that the large roller installed on the large roller mounting plate is lifted; The lifting control of the large drum is simple and reliable, and compared with the lifting mechanism of the large drum using a servo system, the structure is simpler and the cost is lower.

Further, each side plate 90 is rotatably provided with a driven gear 5 and a driving gear 6, the driving gear meshes with the driven gear and is used to drive the driven gear to rotate; the driven gear is eccentrically provided with a shaft hole 5.1 , the shaft 2 passes through the shaft hole through the bearing 7 . The driven gear can be driven to rotate by turning the driving gear. When the driven gear rotates, the rotating shaft 2 is driven to move up and down through the shaft hole, and then the large roller is driven up and down through the support rod 3. By controlling the rotation angle of the driven gear, it can be precisely controlled. The lifting height of the large drum, therefore, if the large drum needs to be raised and lowered (such as when replacing the large drum), the motor 4 can be used to control the rapid lifting of the large drum. If it is necessary to accurately control the embossing gap (that is, the The gap between them) to meet the requirements of paper of different thickness, it can be adjusted through the driving gear.

Here, the specific control mode of the driving gear 6 is not limited, for example, a rocking handle can be connected on the driving gear, the rotation of the driving gear can be controlled by hand, and the rocking handle can be locked by a locking screw; it can also be controlled by a motor ( It does not mean that the motor 4) drives the driving gear to rotate through a multi-stage reduction mechanism; other methods can also be used to control the rotation of the driving gear.

In this embodiment, the diameter of the driving gear 6 is smaller than that of the driven gear 5 . When there is an angle error in the driving gear 6, the error caused at the driven gear will be smaller, thereby reducing the control error.

Specifically, the output end of the motor 4 is provided with a speed reducer 8, and a drive shaft 9 is respectively connected between the output end of the speed reducer and the two rotating shafts 2; The output end of the device is connected, and the other end is connected with the inner end of the corresponding rotating shaft through the universal joint 10. On the one hand, setting the reducer can increase the output torque, so that the motor with small power can be used to reliably drive the large roller up and down, and on the other hand, it can reduce the control error; and the universal coupling at both ends of the drive shaft can ensure that the shaft 2 can follow the While moving up and down due to the rotation of the moving gear, the transmission effect of the drive shaft is not affected.

Further, as shown in FIG. 6 , the universal coupling 10 and the rotating shaft 2 are both keyed, and the universal coupling can move axially relative to the rotating shaft. When the rotating shaft rises and falls with the rotation of the driven gear so that the rotating shaft and the driving shaft 9 are not on the same straight line, the driving shaft will be inclined at a small angle. If the universal coupling cannot move axially relative to the rotating shaft, it will be due to The pulling force makes the rotating shaft 2 unable to lift up and down, thus causing the driving gear and the driven gear to be stuck.

In this embodiment, the inner end of the driven gear 5 is provided with a bearing cover 7.1, the bearing cover and the inner end of the driven gear are both provided with an oil cup 11, and the oil cup communicates with the shaft hole 5.1. This structure can facilitate the replenishment of lubricating oil and can ensure the retention of lubricating oil, thereby ensuring lubricating performance.

Specifically, a pivot shaft 3.1 is rotatably provided on the upper end of the support rod 3, and the inner end of the pivot shaft is connected with the large roller mounting plate 1 through a bearing.

3 and 4, in order to facilitate the adjustment of the stamping gap, the driven gear 5 is provided with an indicator line 5.2, and the side plate 90 is provided with a scale line 90.1 for marking the size of the stamping gap. When adjusting, you can quickly judge whether the adjustment is in place through the indicator line and scale line.

It can be understood that those skilled in the art can make equivalent substitutions or changes according to the technical solution of the utility model and the utility model concept thereof, and all these changes or substitutions should belong to the protection scope of the utility model.

Claims (8)

1. A large cylinder lifting mechanism of a printing press, characterized in that it comprises two large cylinder mounting plates that are respectively hinged to the upper ends of the two side plates of the printing machine frame, and the large cylinder is installed between the two large cylinder mounting plates , each side plate is rotatably provided with a rotating shaft, the outer end of the rotating shaft is provided with an eccentric connecting column, and the eccentric connecting column is rotatably connected with the lower end of a strut, and the upper end of the strut is connected with the corresponding large roller The mounting plate is pivotally connected, and the two shafts are rotated synchronously by a motor. 2. The large cylinder lifting mechanism of a printing press according to claim 1, wherein each side plate is rotatably provided with a driven gear and a driving gear, and the driving gear meshes with the driven gear and is used to drive the driven gear. The driven gear rotates; a shaft hole is eccentrically opened on the driven gear, and the rotating shaft is passed through the shaft hole through a bearing. 3. The large cylinder lifting mechanism of a printing press according to claim 2, wherein the diameter of the driving gear is smaller than that of the driven gear. 4. The lifting mechanism of the large cylinder of the printing press according to claim 2, characterized in that, the output end of the motor is provided with a reducer, and a drive shaft is respectively connected between the output end of the reducer and the two rotating shafts ; One end of the drive shaft is connected to the output end of the reducer through a universal coupling, and the other end is connected to the inner end of the corresponding rotating shaft through a universal coupling. 5. The lifting mechanism of the large cylinder of the printing press according to claim 4, characterized in that, the universal coupling and the rotating shaft are connected by keys, and the universal coupling can move axially relative to the rotating shaft move. 6. The large cylinder lifting mechanism of printing press according to claim 2, characterized in that, the inner end of the driven gear is provided with a bearing cover, and the bearing cover and the inner end of the driven gear are both provided with an oil cup, The oil cup communicates with the shaft hole. 7. The lifting mechanism of the large cylinder of the printing press according to claim 1, wherein the upper end of the support rod is rotatably provided with a pivot shaft, and the inner end of the pivot shaft is connected to the large cylinder mounting plate through a bearing . 8 . The large cylinder lifting mechanism of a printing press according to claim 2 , wherein the driven gear is provided with an indicator line, and the side plate is provided with a scale line for marking the size of the embossing gap.