CN110194294B

CN110194294B - Film feeding mechanism of bundling machine

Info

Publication number: CN110194294B
Application number: CN201910558511.8A
Authority: CN
Inventors: 杨松; 池仁荣
Original assignee: ZHEJIANG JIANGNAN PHARMACEUTICAL MACHINERY CO Ltd
Current assignee: ZHEJIANG JIANGNAN PHARMACEUTICAL MACHINERY CO Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2024-09-27
Anticipated expiration: 2039-06-26
Also published as: CN110194294A

Abstract

The invention discloses a film feeding mechanism of a binding machine, which comprises a unreeling shaft and is characterized in that: the shaft end of the unwinding shaft is connected with a speed reducer with a self-locking function, a front guide roller, a floating guide roller and a rear guide roller are sequentially arranged on a film delivery path of the unwinding shaft, the floating guide roller is arranged on a guide roller bracket in a vertically floating manner, an upper electric eye is correspondingly arranged at the upper limit position of the floating guide roller, a lower electric eye is correspondingly arranged at the middle position of the floating guide roller, a brake block is arranged above the rear guide roller, the brake block is arranged in a vertically movable manner, and the vertical movement of the brake block is pushed by a brake cylinder; when the film feeding device is used, when the floating guide roller passes through the lower electric eye from bottom to top, the lower electric eye controls the speed reducer to start working, when the floating guide roller reaches the upper limit position, the upper electric eye controls the brake cylinder to act and delays to control the speed reducer to stop working, and the length of the film discharged by the unreeling shaft in the delay time period enables the floating guide roller to return to the lower limit position from the upper limit position. The invention can realize quick and accurate film feeding action so as to ensure the bundling speed and quality of the bundling machine.

Description

Film feeding mechanism of bundling machine

Technical Field

The invention relates to a binding machine, in particular to a film feeding mechanism of the binding machine.

Background

The strapping machine is a machine that performs a strapping operation by strapping packages with a strapping tape. If the strapping tape is a film, the strapping machine needs to use a film feeding mechanism, and whether the film feeding action of the film feeding mechanism is rapid and accurate is an important factor for ensuring the strapping speed and quality of the strapping machine. The film feeding mechanism of the strapping machine in the prior art is difficult to realize quick and accurate film feeding action.

Disclosure of Invention

In view of the shortcomings of the prior art, the technical problem to be solved by the invention is to provide a film feeding mechanism of a strapping machine, which can realize quick and accurate film feeding action so as to ensure strapping speed and quality.

The invention is completed by adopting the following technical scheme:

Film feeding mechanism of bundling machine, including unreeling axle, its characterized in that: the shaft end of the unwinding shaft is connected with a speed reducer with a self-locking function, a front guide roller, a floating guide roller and a rear guide roller are sequentially arranged on a film delivery path of the unwinding shaft, the floating guide roller is arranged on a guide roller bracket in a vertically floating manner, an upper electric eye is correspondingly arranged at the upper limit position of the floating guide roller, a lower electric eye is correspondingly arranged at the middle position of the floating guide roller, a brake block is arranged above the rear guide roller, the brake block is arranged in a vertically movable manner, and the vertical movement of the brake block is pushed by a brake cylinder; when the film feeding device is used, when the floating guide roller passes through the lower electric eye from bottom to top, the lower electric eye controls the speed reducer to start working, when the floating guide roller reaches the upper limit position, the upper electric eye controls the brake cylinder to act and delays to control the speed reducer to stop working, and the length of the film discharged by the unreeling shaft in the delay time period enables the floating guide roller to return to the lower limit position from the upper limit position.

According to the film feeding mechanism of the strapping machine, when the film is fed each time, the upper and lower floating distance of the floating guide roller can be smaller, and the film storage length of the floating guide roller can be smaller than the film feeding length each time, because the speed reducer can be put into operation each time when the film is fed each time and the floating guide roller passes through the lower electric eye, and the unreeling shaft can be enabled to release a certain film length for compensation; because the action distance of the floating guide roller is small, the film feeding action can be realized more quickly, so that the strapping speed and the strapping quality of the strapping machine are ensured. The specific working principle is as follows: when the floating guide roller reaches the upper limit position, the upper electric eye sends a signal to control a brake cylinder to act, a brake block tightly presses the passing film on the rear guide roller, at the moment, a film sealing mechanism of the bundling machine starts to seal and bundle a box, meanwhile, the speed reducer delays to brake, the length of the film discharged by the discharging shaft in the delay time period enables the floating guide roller to return to the lower limit position from the upper limit position to wait for the next film feeding action, and the quick and accurate film feeding action is completed according to the circulation.

Preferably, two ends of the floating guide roller are connected with lifting sliding blocks, and the vertical movement of the lifting sliding blocks is guided by vertical guide posts arranged on the guide roller support.

Preferably, the speed reducer is a worm gear speed reducer.

Drawings

The invention has the following drawings:

Figure 1 is a schematic view of the structure of the present invention,

Fig. 2 is a top directional view of fig. 1.

Detailed Description

As shown in the figure, the film feeding mechanism of the strapping machine comprises a unwinding shaft 1, a speed reducer 2 with a self-locking function is connected to the shaft end of the unwinding shaft 1, the speed reducer 2 is a worm gear speed reducer, a front guide roller 3, a floating guide roller 7 and a rear guide roller 9 are sequentially arranged on a film feeding path of the unwinding shaft 1, the floating guide roller 7 is arranged on a guide roller support 12 in a vertically floating mode, two ends of the floating guide roller 7 are connected with lifting sliding blocks 8, the vertical movement of the lifting sliding blocks 8 is guided by vertical guide posts 6 arranged on the guide roller support 12, lower springs are arranged below the lifting sliding blocks 8 to play a role of buffering, upper springs are arranged above the lifting sliding blocks 8 to play a role of enabling the floating guide roller to quickly return and assist in tensioning films, corresponding upper electric holes 4 are arranged at the upper limit positions of the floating guide roller 7, corresponding lower electric holes 5 are arranged at the middle positions of the floating guide roller 7, brake blocks 10 are arranged above the rear guide roller 9, the brake blocks 10 are arranged in a vertically movable mode, and the vertical movement of the brake blocks 10 are pushed by a brake cylinder 11. When the film feeding work, when the floating guide roller 7 passes through the lower electric eye 5 from bottom to top, the lower electric eye 5 controls the speed reducer 2 to start working, when the floating guide roller 7 reaches the upper limit position, the upper electric eye 4 controls the brake cylinder 11 to act and delays to control the speed reducer 2 to stop working, the length of the film discharged by the unwinding shaft 1 in the delay time period enables the floating guide roller 7 to return to the lower limit position from the upper limit position again, the distance between the upper electric eye 4 and the lower electric eye 5 can be adjusted, and the speed reducer 2 works to enable the unwinding shaft 1 to discharge the film length which just meets the compensation requirement in the action process from the lower electric eye 4 to the upper electric eye 5.

Claims

1. Film feeding mechanism of bundling machine, including unreeling axle, its characterized in that: the shaft end of the unwinding shaft is connected with a speed reducer with a self-locking function, a front guide roller, a floating guide roller and a rear guide roller are sequentially arranged on a film delivery path of the unwinding shaft, the floating guide roller is arranged on a guide roller bracket in a vertically floating manner, an upper electric eye is correspondingly arranged at the upper limit position of the floating guide roller, a lower electric eye is correspondingly arranged at the middle position of the floating guide roller, a brake block is arranged above the rear guide roller, the brake block is arranged in a vertically movable manner, and the vertical movement of the brake block is pushed by a brake cylinder; when the floating guide roller reaches the upper limit position, the upper electric eye controls the brake cylinder to act and delays to control the speed reducer to stop working, and the length of the film discharged by the unwinding shaft in the delay time period enables the floating guide roller to return to the lower limit position from the upper limit position; the two ends of the floating guide roller are connected with lifting sliding blocks; the speed reducer is a worm gear speed reducer.