A tension adjustment device for processing rope bag

Abstract

The present invention relates to the technical field of tension adjustment equipment for processing a string bag, and provides a tension adjustment device for processing a string bag, including a machine body, a cutting device and an edge banding machine are arranged on the machine body, and the same film is inserted in the cutting device and the edge banding machine, and a first servo motor and a second servo motor are arranged on the machine body. The present invention overcomes the shortcomings of the prior art, has a reasonable design, and a compact structure, and solves the problems that the existing stringing machine has excessive power requirements for the servo motor, the traditional structure has excessive strength requirements, and the film tension adjustment is too difficult. The present invention uses two servo motors to control the stringing machine through a simple structural combination, and can be driven by two low-power servo motors to share the driving pressure and reduce the strength of the transmission structure. At the same time, the two servo motors cooperate with the tension adjustment device to automatically adjust the tension of the film, and has strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of tension regulating equipment for processing a string bag, and in particular to a tension regulating device for processing a string bag. Background Art

[0002] A drawstring bag is a plastic bag with a drawstring at the opening. The opening of the plastic bag can be sealed by pulling the drawstring. It is widely used in life.

[0003] The drawstring bag is made by a drawstring machine, and a plastic film with a drawstring is heat-sealed on the plastic bag through the edge sealing machine on the drawstring machine.

[0004] The rope threading machines currently on the market still have the following problems in actual use:

[0005] 1. The traditional rope threading machine is a servo motor with 3 sets of rubber rollers, which requires the servo motor to have high power, high strength requirements for the transmission mechanism, and is more prone to damage.

[0006] 2. It is not convenient to adjust the tightness of the film with the traditional rope threading machine. It is necessary to adjust the pressure of the rubber roller. If it is not adjusted well or not adjusted well, the film may be easily broken or too loose, which will affect the edge sealing and cutting effects.

[0007] To this end, we propose a tension regulating device for processing rope-drawn bags. Summary of the invention

[0008] 1. Technical issues to be resolved

[0009] In view of the deficiencies in the prior art, the present invention provides a tension adjustment device for processing rope bag, which overcomes the deficiencies in the prior art and has a reasonable design and compact structure. It solves the problems that the existing rope threading machine has excessively high power requirements for the servo motor, excessive strength requirements for the traditional structure, and excessive difficulty in adjusting the tension of the film. The present invention uses two servo motors to control the rope threading machine through a simple structural combination. The two low-power servo motors can drive the machine, share the driving pressure, and reduce the strength of the transmission structure. At the same time, the two servo motors cooperate with the tension adjustment device to automatically adjust the tension of the film, which has strong practicality.

[0010] (II) Technical solution

[0011] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0012] A tension adjustment device for processing a drawstring bag comprises a machine body, a cutting device and an edge banding machine are arranged on the machine body, and the same film is inserted in the cutting device and the edge banding machine, a first servo motor and a second servo motor are arranged on the machine body, an output shaft of the first servo motor is connected to a first rubber roller group through a first conveyor belt, and the first rubber roller group is connected to an upper end of one side of the machine body;

[0013] A tension adjusting device is provided on a section of the film between the first rubber roller group and the cutting device, the tension adjusting device comprising a floating roller, the floating roller abutting against the upper end of the film, the two ends of the floating roller being slidably connected to the limiting grooves provided on the limiting groove, and the inner wall of the limiting groove being connected with two switches corresponding to the floating roller;

[0014] A second rubber roller group is arranged on a section of the machine body between the cutting device and the edge banding machine, and a third rubber roller group is connected to the upper end of the other side of the machine body. The rotating shaft of the third rubber roller group is connected to the driving shaft of the second servo motor through a second conveyor belt.

[0015] Furthermore, the second rubber roller group is connected to the driving shaft of the second servo motor through a third conveyor belt.

[0016] Furthermore, each of the first rubber roller group, the second rubber roller group and the third rubber roller group comprises two rubber rollers which are distributed up and down and contact each other, and a film is arranged between the two rubber rollers.

[0017] Furthermore, both ends of the rubber rollers located at the upper ends of the first rubber roller group, the second rubber roller group and the third rubber roller group are movably connected with output shafts of the telescopic device.

[0018] Furthermore, the switch is a proximity switch, and the proximity switch is electrically connected to the second servo motor.

[0019] Furthermore, the cutting device includes a hydraulic device and a copper hot knife.

[0020] (III) Beneficial effects

[0021] The embodiment of the present invention provides a tension adjustment device for processing a string bag, which has the following beneficial effects:

[0022] 1. The first servo motor and the second servo motor and two transmission mechanisms can share the driving pressure with each other, improve the driving stability, prevent one of the servo motors from being overloaded and damaged, and facilitate the subsequent control of the film tension.

[0023] 2. It can automatically control the tension of the film, improve the effect of heat sealing, and improve work efficiency. By adding a tension adjustment device, if the film is too tight, the film will lift the floating roller and move it upward, so that the floating roller is close to the switch located above. At this time, the switch transmits a signal to the second servo motor, and the second servo motor increases the speed to loosen the film; if the film is too loose, the film cannot lift the floating roller, so that the floating roller is close to the switch located below. At this time, the switch transmits a signal to the second servo motor, and the second servo motor reduces the speed to make the film appropriately tight. In this way, the film is always in a state of neither loose nor tight, which is convenient for the copper hot knife to perform heat sealing.

[0024] 3. The third rubber roller group and the second rubber roller group are driven to operate simultaneously by the same second servo motor, which can ensure that a section of film between the third rubber roller group and the second rubber roller group can move smoothly without wrinkles due to uneven speed, thereby improving the edge sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the tension adjustment device of the present invention.

[0027] In the figure: machine body 1, first servo motor 2, first conveyor belt 3, first rubber roller group 4, tension adjustment device 5, floating roller 5.1, limit groove 5.2, switch 5.3, cutting device 6, second rubber roller group 7, edge banding machine 8, third rubber roller group 9, second servo motor 10, film 11. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Refer to the attached Figure 1-2 A tension regulating device for processing a drawstring bag, a tension regulating device for processing a drawstring bag, comprises a machine body 1, a cutting device 6 and an edge banding machine 8 are arranged on the machine body 1, and the same film 11 is inserted in the cutting device 6 and the edge banding machine 8, the cutting device 6 comprises a hydraulic device and a copper hot knife, and the film 11 can be heat-sealed by the copper hot knife, which can seal the bottom of the bag on the one hand and separate the two bags conveniently at the same time, the edge banding machine 8 is a prior art, and its purpose is to connect the film and the film strip with a drawstring together by heat sealing, and is widely used in drawstring bag processing equipment.

[0030] In this embodiment, Figure 1 As shown, the machine body 1 is provided with a first servo motor 2 and a second servo motor 10. Through the two servo motors of the first servo motor 2 and the second servo motor 10 and the two transmission mechanisms composed accordingly, the transmission pressure can be shared with each other to improve the driving stability. The output shaft of the first servo motor 2 is connected to a first rubber roller group 4 through a first conveyor belt 3. The first rubber roller group 4 is connected to an upper end of one side of the machine body 1. The first rubber roller group 4 can drive the film 11 to move.

[0031] In this embodiment, Figure 1 and 2 As shown, a tension adjusting device 5 is provided on a section of the film 11 between the first rubber roller group 4 and the cutting device 6. The tension adjusting device 5 comprises a floating roller 5.1. The floating roller 5.1 abuts against the upper end of the film 11. Both ends of the floating roller 5.1 are slidably connected to the limit grooves provided on the limit groove 5.2. Two switches 5.3 corresponding to the floating roller 5.1 are connected to the inner wall of the limit groove 5.2. By adding the tension adjusting device 5, if the film 11 is too tight, the film 11 will lift the floating roller 5.1 to move upward, so that the floating roller 5.1 .1 is close to the switch 5.3 located at the top, and the switch 5.3 transmits a signal to the second servo motor 10, and the second servo motor 10 increases the speed to loosen the film 11; if the film 11 is too loose, the film 11 cannot lift the floating roller 5.1, so that the floating roller 5.1 is close to the switch 5.3 located at the bottom, and the switch 5.3 transmits a signal to the second servo motor 10, and the second servo motor 10 reduces the speed to make the film 11 appropriately tight, so that the film 11 is always in a state of neither loose nor tight, which is convenient for the copper hot knife to perform heat sealing.

[0032] In this embodiment, Figure 1 As shown, a second rubber roller group 7 is provided on a section of the machine body 1 between the cutting device 6 and the edge banding machine 8, and a third rubber roller group 9 is connected to the upper end of the other side of the machine body 1. The second rubber roller group 7 and the third rubber roller group 9 are both driving devices of the film 11, and cooperate with the first rubber roller group 4 to drive the film 11 to move. The rotating shaft of the third rubber roller group 9 is interconnected with the driving shaft of the second servo motor 10 through the second conveyor belt, and the second rubber roller group 7 is interconnected with the driving shaft of the second servo motor 10 through the third conveyor belt. The third rubber roller group 9 and the second rubber roller group 7 are driven by the same second servo motor 10 to operate simultaneously, which can ensure that a section of the film 11 between the third rubber roller group 9 and the second rubber roller group 7 can move smoothly without wrinkles due to uneven speed, thereby improving the edge banding effect.

[0033] In this embodiment, Figure 1 As shown, the first rubber roller group 4, the second rubber roller group 7 and the third rubber roller group 9 each include two rubber rollers which are distributed up and down and contact each other, and a film 11 is arranged between the two rubber rollers.

[0034] In this embodiment, both ends of the rubber rollers located at the upper ends of the first rubber roller group 4, the second rubber roller group 7 and the third rubber roller group 9 are movably connected to the output shaft of the hydraulic cylinder, which facilitates improving the connection effect between the rubber rollers and the film 11.

[0035] In this embodiment, the switch 5.3 is a proximity switch. By setting the proximity switch, the tension adjustment device 5 can be prevented from colliding with the switch 5.3, thereby improving the protection effect and the service life. The proximity switch is electrically connected to the second servo motor 10, and the speed of the second servo motor 10 can be controlled by the proximity switch, thereby achieving the purpose of automatic adjustment.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tension adjustment device for processing a drawstring bag, comprising a machine body, a cutting device and an edge banding machine are arranged on the machine body, and the same film is inserted in the cutting device and the edge banding machine, characterized in that: The machine body is provided with a first servo motor and a second servo motor, the output shaft of the first servo motor is connected to a first rubber roller group through a first conveyor belt, and the first rubber roller group is connected to an upper end of one side of the machine body; A tension adjusting device is provided on a section of the film between the first rubber roller group and the cutting device, the tension adjusting device comprising a floating roller, the floating roller abutting against the upper end of the film, the two ends of the floating roller being slidably connected to the limiting grooves provided on the limiting groove, and the inner wall of the limiting groove being connected with two switches corresponding to the floating roller; A second rubber roller group is provided on a section of the machine body between the cutting device and the edge banding machine, and a third rubber roller group is connected to the upper end of the other side of the machine body, and the rotating shaft of the third rubber roller group is connected to the driving shaft of the second servo motor through the second conveyor belt; The first rubber roller group, the second rubber roller group and the third rubber roller group each include two rubber rollers which are distributed up and down and contact each other, and a film is arranged between the two rubber rollers; The switch is a proximity switch, and the proximity switch is electrically connected to the second servo motor.

2. A tension adjustment device for processing a string bag as claimed in claim 1, characterized in that: The second rubber roller group is connected to the driving shaft of the second servo motor through a third conveyor belt.

3. A tension adjustment device for processing a drawstring bag as claimed in claim 1, characterized in that: Both ends of the rubber rollers located at the upper ends of the first rubber roller group, the second rubber roller group and the third rubber roller group are movably connected with the output shaft of the telescopic device.

4. A tension adjustment device for processing a string bag as claimed in claim 1, characterized in that: The cutting device comprises a hydraulic device and a copper hot knife.

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