A dynamic storage and rolling device for bag making machine

Abstract

The present invention discloses a dynamic storage and winding device for a bag making machine. A dynamic storage mechanism composed of a storage roller group is arranged between a film roll and a feed roller group. The film drawn out of the film roll is distributed in a V-shape around upper and lower guide rollers. The upper and lower guide rollers are respectively arranged on the lifting inner and outer bases of the column. The lifting inner and outer bases are respectively connected to one side of the chain of the sprocket chain transmission mechanism. When the chain makes a rotary motion, the movement directions of the lifting outer base and the lifting inner base are opposite. The device realizes the non-stop material change and material connection of the bag making machine, improves the production efficiency, ensures the bag making quality, and is simple, reliable, easy to maintain, and compact.

Description

Technical Field

[0001] The invention relates to an automatic packaging bag making machine, in particular to a reel unwinding mechanism. Background Art

[0002] The bag making machine is an automatic device for making plastic packaging bags of various sizes, thicknesses and specifications. During the operation of the bag making machine, the film roll used as the raw material for making bags is located at the head end of the equipment. Under the traction of the equipment, the unrolled film of the film roll enters the feed roller group of the equipment for processing. After the film of the current film roll is unrolled, it is necessary to manually replace the new film roll (called material replacement), and the tail end of the film of the current film roll and the head end of the film of the new film roll must be connected with tape (called material splicing).

[0003] In the prior art, in order to complete the above-mentioned material replacement and material connection work, the equipment must be stopped to wait for the material, which seriously affects the production efficiency. Summary of the invention

[0004] In order to solve the above-mentioned drawbacks, the technical problem to be solved by the present invention is to provide a reeling device for a bag making machine, which does not require the bag making machine to be stopped during the material changing and connecting process. In order to solve the above technical problems, the technical solution adopted by the present invention is a dynamic storage and winding device of a bag making machine, including a film roll and a feed roller group, characterized in that a dynamic storage mechanism is provided between the film roll and the feed roller group, and the dynamic storage mechanism includes at least one storage roller group; the storage roller group includes two upper guide rollers in a high position, and a lower guide roller in a low position is provided between the two upper guide rollers; the film led out of the film roll is distributed in a V-shape around the upper and lower guide rollers; the two end shafts of the two upper guide rollers are arranged at the two ends of the cross arm, the middle part of the cross arm is fixedly connected to the lifting outer base of the column, and the two end shafts of the lower guide roller are arranged on the lifting inner base of the column; a sprocket chain transmission mechanism is provided in the column: the lower end sprocket located at the bottom of the column is connected to the servo motor, the upper end sprocket is located at the top of the column, the lifting outer base and the lifting inner base are respectively connected to one side of the chain, and when the chain makes a rotating motion, the movement directions of the lifting outer base and the lifting inner base are opposite.

[0005] By adopting the above technical solution, during normal operation, the film drawn out from the working film roll bypasses the upper and lower guide rollers and enters the feed roller group without affecting normal operation; when it is necessary to change materials or connect materials, start the servo motor, and drive the two upper guide rollers to descend and the lower guide roller to rise through the sprocket chain and the lifting inner and outer bases; the V-shaped film on the storage roller group is replenished with feed to keep the end of the working film roll from being pulled, freeing up time for connecting and changing materials without stopping. At the same time, the speed of replenishing feed of this device is stable and balanced, avoiding large fluctuations in film tension, which is beneficial to ensuring the quality of bag making and reducing the size of the equipment. The column with sprocket chain as the transmission has completed the support and synchronous reverse drive work well, and it is simple, reliable, easy to maintain, and compact.

[0006] As can be seen from the above, the beneficial effects of the present invention are that it enables the bag making machine to change materials without stopping, improves production efficiency, ensures bag making quality, and is simple, reliable, easy to maintain, and compact.

[0007] Preferably, the bag making machine is provided with a tachometer for monitoring the moving speed of the film, and the control mechanism controls the speed of the servo motor according to the signal of the tachometer, so that the speed of replenishing the feed matches the moving speed of the film.

[0008] Preferably, a guide column is arranged inside the column, and the lifting outer base and the lifting inner base are connected to a slider on the guide column to ensure the stability of the lifting movement of the upper and lower guide rollers.

[0009] Preferably, the dynamic material storage mechanism comprises 2 to 5 material storage roller groups, thereby extending the available time for material replacement and material connection.

[0010] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0011] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structural principle of the unwinding device according to an embodiment of the present invention (front view, normal working state);

[0014] Figure 2 Schematic diagram of the structural principle of the dynamic storage mechanism of an embodiment of the present invention (side view);

[0015] Figure 3 for Figure 2 The schematic diagram of the internal structure principle of the right column 10 is shown;

[0016] Figure 4 It is a schematic diagram of the overall structural principle of the unwinding device according to an embodiment of the present invention (front view, material changing and connecting state). DETAILED DESCRIPTION

[0017] Referring to the accompanying drawings, a specific structure of the present invention is reflected, in which a dynamic storage mechanism is provided between the film roll 1 and the feed roller group 7 of the bag making machine, and the dynamic storage mechanism includes a storage roller group; the storage roller group includes an upper guide roller 3 and an upper guide roller 6 in a high position, and a lower guide roller 9 in a low position is provided between the two upper guide rollers.

[0018] The film 2 led out of the film roll 1 passes over the upper and lower guide rollers in a V-shaped distribution. The two end shafts 13 of the two upper guide rollers are installed at the two ends of the cross arm 5, the middle part of the cross arm 5 is fixed to the lifting outer base 4 of the column 10, and the two end shafts 8 of the lower guide roller 9 are installed on the lifting inner base 15 of the column 10.

[0019] A sprocket chain transmission mechanism is provided in the column 10: the lower sprocket 19 in the electric box 12 located at the bottom of the column 10 is connected to the servo motor 20, the upper sprocket 18 is located at the top of the column 10, the lifting outer base 4 is connected to the outer chain 17, and the lifting inner base 15 is respectively connected to the inner chain 16. When the chain rotates, the lifting and lowering movement directions of the lifting outer base 4 and the lifting inner base 15 are opposite.

[0020] The bag making machine is provided with a tachometer for monitoring the speed of the film, and the control mechanism controls the speed of the servo motor 20 according to the signal of the tachometer, so that the speed of the replenishing feed matches the speed of the film movement, avoiding changes in the film tension and affecting the bag making quality.

[0021] By adopting the above technical solution, during normal operation, the film 2 led out of the working film roll 1 bypasses the upper and lower guide rollers and enters the feed roller group 7 without affecting normal operation; when it is necessary to change materials and connect materials, the servo motor 20 is started, and the two upper guide rollers 3 and 6 are driven to descend and the lower guide roller 9 is driven to rise in sequence through the sprocket chain and the lifting inner and outer bases, such as Figure 3 As shown, the V-shaped distribution of the film on the storage roller group changes from the high 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, so as to keep the end of the film of the working film roll 1 from being pulled, and to make time for the material connection and replacement work without stopping the machine. 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 feed is stable and balanced, avoiding large fluctuations in the tension of the film 2.

[0022] The above implementation is only for the purpose of clearly illustrating the technical solution of the present invention and cannot be understood as limiting the present invention in any way. The present invention has various known substitutions or modifications in the technical field, which fall within the protection scope of the present invention without departing from the essential meaning of the present invention.

Claims

1. A dynamic storage roll device for a bag making machine, comprising a film roll and a feed roller group, characterized in that: A dynamic storage mechanism is provided between the film roll and the feed roller group, and the dynamic storage mechanism includes at least one storage roller group; the storage roller group includes two upper guide rollers at a high position, and a lower guide roller at a low position is provided between the two upper guide rollers; the film led out of the film roll bypasses the upper and lower guide rollers in a V-shaped distribution; the two end shafts of the two upper guide rollers are installed at the two ends of the cross arm, the middle part of the cross arm is fixedly connected to the lifting outer base of the column, and the two end shafts of the lower guide roller are installed on the lifting inner base of the column; a sprocket chain transmission mechanism is provided in the column: the lower end sprocket located at the bottom of the column is connected to the servo motor, and the upper end sprocket is located at the top of the column, the lifting outer base and the lifting inner base are respectively connected to one side of the chain, and when the chain makes a rotational motion, the movement directions of the lifting outer base and the lifting inner base are opposite.

2. The dynamic storage and winding device according to claim 1, characterized in that: The bag making machine is provided with a speed meter for monitoring the moving speed of the film, and the control mechanism controls the rotating speed of the servo motor according to the signal of the speed meter.

3. The dynamic storage and winding device according to claim 1 or 2, characterized in that: A guide column is arranged inside the column, and a lifting outer base and a lifting inner base are connected to a slider on the guide column.

4. The dynamic storage and winding device according to claim 1 or 2, characterized in that: The dynamic material storage mechanism comprises 2 to 5 material storage roller groups.

5. The dynamic storage and winding device according to claim 3, characterized in that: The dynamic material storage mechanism comprises 2 to 5 material storage roller groups.

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