CN211470217U - Dynamic storage and unwinding device of bag making machine - Google Patents

Abstract

The utility model discloses a dynamic storage and unwinding device of a bag making machine. A dynamic material storage mechanism composed of a material storage roller group is arranged between a film roll and a feeding roller group, and the film drawn from the film roll bypasses the upper and lower guides. The guide rollers are distributed in a V shape; the upper and lower guide rollers are respectively installed on the inner and outer bases of the vertical column; the inner and outer bases of the lift are respectively connected to one side of the chain of the sprocket chain transmission mechanism. , the movement directions of the lifting outer base and the lifting inner base are opposite. The device realizes the non-stop feeding and feeding of the bag making machine, improves the production efficiency, ensures the quality of bag making, and is simple, reliable, easy to maintain, and small in size.

Description

A dynamic storage and unwinding device for a bag making machine

technical field

The utility model relates to an automatic bag making machine for packaging bags, in particular to an unwinding mechanism.

Background technique

The bag making machine is an automatic equipment for making plastic packaging bags of various sizes and thicknesses. During the operation of the bag making machine, the film roll as the raw material for bag making is located at the head end of the equipment, under the traction of the equipment. The film roll is unrolled and the film enters the equipment feeding roller group for processing. After the film of the current film roll is unrolled, it needs to be manually replaced with a new film roll (called refilling), and the film tail end of the current film roll and the film head end of the new film roll should be connected with tape (called jointing). material).

In the prior art, in order to complete the above-mentioned refueling and receiving work, the equipment must be shut down to wait for the material, which seriously affects the production efficiency.

Utility model content

In order to solve the above drawbacks, the technical problem to be solved by the present invention is to provide an unwinding device of the bag making machine, which does not need to stop the bag making machine during the material changing and feeding process. In order to solve the above technical problems, the technical solution adopted by the present invention is that a dynamic storage and unwinding device of a bag making machine includes a film roll and a feeding roller group, characterized in that the film roll and the feeding roller group are between the film roll and the feeding roller group. A dynamic material storage mechanism is arranged between, and the dynamic material storage mechanism includes at least one storage roller group; the storage roller group includes two upper guide rollers in a high position, and a The lower guide roller at a low position; the film drawn from the film roll bypasses the upper and lower guide rollers in a V-shaped distribution; the rotating shafts at both ends of the two upper guide rollers are installed at both ends of the cross arm, and the middle of the cross arm is fixedly connected On the lifting outer base of the column, the two ends of the lower guide rollers are mounted on the inner lifting base of the column; the column is provided with a sprocket chain transmission mechanism: the lower end sprocket at the bottom of the column is connected to the servo motor, and the upper end chain The wheel is located on the top of the column, and the lifting outer base and the lifting inner base are respectively connected to one side of the chain. When the chain rotates, the lifting outer base and the lifting inner base move in opposite directions.

With the above technical solution, during normal operation, the film drawn from the working film roll bypasses the upper and lower guide rollers and enters the feeding roller group without affecting the normal operation; when the material needs to be changed, start the servo motor and pass the sprocket. The chain, the lifting inner and outer bases drive the two upper guide rollers to descend and simultaneously drive the lower guide rollers to rise; the V-shaped distribution film on the storage roller group supplements the feeding to keep the end of the working film roll from being pulled , freeing up time for receiving and refueling work without downtime. At the same time, the speed of the supplementary feeding of the device is stable and balanced, avoiding the large fluctuation of the film tension, which is conducive to ensuring the quality of bag making and reducing the volume of the equipment. The column driven by the sprocket chain can better complete the support and synchronous reverse drive work, and is simple, reliable, easy to maintain, and small in size.

As can be seen from the above, the beneficial effect of the utility model is that it realizes the non-stop material change of the bag making machine, improves the production efficiency, ensures the quality of bag making, and is simple, reliable, easy to maintain, and small in size.

Preferably, the bag making machine is provided with a speedometer for monitoring the moving speed of the film, and the control mechanism controls the rotation speed of the servo motor according to the signal of the speedometer. Match the speed of the supplemental feed to the speed of the film movement.

Preferably, a guide column is arranged in the upright column, and the lifting outer base and the lifting inner base are connected to the slider on the guide column. Ensure the stability of the lifting and lowering movement of the upper and lower guide rollers.

Preferably, the dynamic material storage mechanism includes 2 to 5 material storage roller groups. Extends the time available for refill splice.

In order to make the above objects, features and advantages of the present utility model more clearly understood, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not subject to the specific embodiments disclosed below. limit.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Description of drawings

1 is a schematic diagram of the overall structure and principle of the unwinding device according to the embodiment of the present invention (front view, normal working state);

Fig. 2 is the structural principle schematic diagram (side view) of the dynamic storage mechanism according to the embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal structure principle of the right column 10 shown in FIG. 2;

FIG. 4 is a schematic diagram of the overall structure of the unwinding device according to the embodiment of the present invention (front view, material changing and receiving state). Detailed ways

Referring to the drawings, reflecting a specific structure of the present invention, a dynamic material storage mechanism is arranged between the film roll 1 and the feeding roller group 7 of the bag making machine, and the dynamic material storage mechanism includes a material storage roller The storage roller group includes an upper guide roller 3 and an upper guide roller 6 at a high position, and a lower guide roller 9 at a low position is arranged between the two upper guide rollers.

The film 2 drawn from the film roll 1 bypasses the upper and lower guide rollers in a V-shaped distribution. The rotating shafts 13 at both ends of the two upper guide rollers are installed at both ends of the cross arm 5, the middle part of the cross arm 5 is fixed on the lifting outer base 4 of the upright column 10, and the two ends of the rotating shafts 8 of the lower guide rollers 9 are installed in the upright column. 10 on the lifting inner base 15.

The column 10 is provided with a sprocket chain transmission mechanism: the lower end sprocket 19 in the electric box 12 at the bottom of the column 10 is connected to the servo motor 20, the upper end chain wheel 18 is located at the top of the column 10, and the lifting outer base 4 is connected to the outer chain 17, The inner lift bases 15 are respectively connected to the inner chains 16 , and when the chains perform rotary motion, the lift movement directions of the lift outer base 4 and the lift inner base 15 are opposite.

The bag making machine is provided with a tachometer for monitoring the moving speed of the film, and the control mechanism controls the rotation speed of the servo motor 20 according to the signal of the tachometer. The speed of supplementary feeding is matched with the moving speed of the film, so as to avoid the change of film tension and affect the quality of bag making.

Using the above technical solution, during normal operation, the film 2 drawn from the working film roll 1 bypasses the upper and lower guide rollers and enters the feeding roller group 7 without affecting normal operation; when the material needs to be changed and connected, the servo motor 20 is activated. , the two upper guide rollers 3 and 6 are driven down by the sprocket chain, the lifting inner and outer bases in sequence, and the lower guide roller 9 is driven to rise at the same time. As shown in Figure 3, the V-shaped distribution on the storage roller group The film changes from the peak waveform shown by the dotted line 2-1 to the low peak waveform shown by the solid line 2-2. During this period, a certain length of film 2 is output to supplement the feed to keep the end of the film of the working film roll 1 from being pulled. moving, freeing up time for material receiving and refueling work without downtime. The upper and lower guide rollers move closer to the middle position at the same time, so that the speed of the above-mentioned supplementary feeding is stable and balanced, and the large fluctuation of the tension of the film 2 is avoided.

The above implementation manners are only to clearly illustrate the technical solutions of the present invention, and should not be construed as making any limitations to the present invention. The present invention has various known alternatives or modifications in the technical field, which all fall into the protection scope of the present invention without departing from the essential meaning of the present invention.

Claims (5)

1. A dynamic storage unwinding device of a bag making machine comprises a film roll and a feeding roller group, and is characterized in that a dynamic material storage mechanism is arranged between the film roll and the feeding roller group, and the dynamic material storage mechanism comprises at least one material storage roller group; the material storage roller group comprises two upper guide rollers at a high position, and a lower guide roller at a low position is arranged between the two upper guide rollers; the film led out by the film roll rounds the upper and lower guide rollers and is distributed in a V shape; two rotating shafts at two ends of the two upper guide rollers are arranged at two ends of the cross arm, the middle part of the cross arm is fixedly connected on a lifting outer base of the upright post, and two rotating shafts at two ends of the lower guide roller are arranged on a lifting inner base of the upright post; the stand is internally provided with a chain wheel and chain transmission mechanism: the lower end chain wheel located at the bottom of the stand column is connected with the servo motor, the upper end chain wheel is located at the top of the stand column, the lifting outer base and the lifting inner base are respectively connected with one side of the chain, and when the chain does rotary motion, the moving directions of the lifting outer base and the lifting inner base are opposite.

2. The dynamic storage unwind apparatus of claim 1 wherein said bag machine has a tachometer for monitoring the speed of film travel, and said control mechanism controls the speed of said servo motor based on signals from said tachometer.

3. The dynamic storage unwinding device of claim 1 or 2 wherein a guide post is provided in the post, and the outer lifting base and the inner lifting base are connected to a slider on the guide post.

4. The dynamic storage unwinding device as claimed in claim 1 or 2, wherein the dynamic storage mechanism comprises 2 to 5 storage roller sets.

5. The dynamic storage unwinding device of claim 3, wherein the dynamic storage mechanism comprises 2 to 5 storage roller sets.

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