Stable bag opening mechanism

Abstract

The utility model relates to a stable bag opening mechanism which comprises a vacuum negative pressure conveying belt, and side face bag opening assemblies which can be close to or away from each other are arranged on the two sides, close to the feeding end, of the vacuum negative pressure conveying belt. A top bag opening component is arranged on one side of the side face bag opening assembly in a lifting mode. The bag opening device is simple in structure, high in bag opening efficiency and stable in bag opening.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a stable bag opening mechanism for opening a bag mouth of a packaging bag. Background Art

[0002] In the existing bag feeding machine packaging process, various prefabricated bags are available on the market, some of which are relatively thick and made of hard materials; some are self-supporting bags with a large space at the bottom but not easy to open; some bags are long and cannot be fully opened at one time; some bags have static electricity on their surfaces and the two bag surfaces are adsorbed together; the above situations may lead to insufficient space inside the bag to hold enough materials, resulting in material overflow; in order to solve the problem of insufficient opening of existing prefabricated bags, various bag opening mechanisms have appeared on the market, including opening the bag by blowing air directly from the bag mouth to the inside, opening the bag by pure mechanical mechanism, and opening the bag by using a cylinder structure, but the above mechanisms have the problems of poor bag opening effect, too complicated mechanism, occupying too much installation space, and inconvenient adjustment. Summary of the invention

[0003] The utility model aims to provide a stable bag opening mechanism with simple structure, high bag opening efficiency and stable bag opening, so as to solve the problems of poor bag opening effect, too complicated mechanism, too much installation space occupied and inconvenient adjustment in the existing mechanism.

[0004] In order to realize the above technical scheme, the technical scheme of the utility model is as follows: a stable bag opening mechanism, including a vacuum negative pressure conveyor belt, and the vacuum negative pressure conveyor belt is provided with side bag opening components that can move closer to or away from each other on both sides near the feed end; one side of the side bag opening component can be raised to be provided with a top bag opening component.

[0005] Furthermore, the top bag opening component comprises:

[0006] A lifting bracket, which can be slidably inserted on the vacuum negative pressure conveyor belt;

[0007] A first driving source, fixedly mounted on the top of the lifting bracket, for providing power; and

[0008] The micro-bag-turning assembly is located above the lifting bracket; the first driving source can drive the micro-bag-turning assembly to move back and forth.

[0009] Furthermore, the first driving source is a lifting cylinder; the lifting cylinder is fixed on the lifting bracket by a fastener;

[0010] The micro-turn bag assembly comprises a belt turning base; one end of the belt turning base is rotatably provided with a negative pressure element, and the other end is swingably provided with a micro-turn power source; the micro-turn power source can drive the negative pressure element to swing back and forth.

[0011] Furthermore, a long strip through hole is provided on the belt turning base; one end of the belt turning base is fixedly connected to a rotating base;

[0012] The micro-turning power source is a swing cylinder; the swing cylinder is swingably mounted on the belt turning base through a cylinder connecting seat;

[0013] The negative pressure element comprises a hollow connecting tube; a hollow first adsorption part is welded at one end of the connecting tube; suction holes are arranged in an array on the first adsorption part; and the area enclosed by all the suction holes is much smaller than the cross-sectional area of ​​the connecting tube.

[0014] Furthermore, the side bag opening assembly includes the side bag opening base fixedly mounted on the vacuum negative pressure conveyor belt; a telescopic cylinder is disposed on one side of the side bag opening base; and a second adsorption portion is disposed at the output end of the telescopic cylinder.

[0015] Furthermore, the vacuum negative pressure conveyor belt includes a vacuum negative pressure conveyor bracket; a servo drive motor is provided under the vacuum negative pressure conveyor bracket; a conveyor belt is arrayed on the vacuum negative pressure conveyor bracket; and the servo drive motor can drive the conveyor belt to rotate.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple structure and adopts an adsorption type, and the vacuum negative pressure conveyor belt, the side bag opening assembly and the top bag opening component cooperate with each other to construct a bag opening space, which effectively ensures the stability of the bag opening (large-area negative pressure adsorption on all sides). In addition, the bag opening method is provided with movement on both sides, which can meet the needs of fully opening packaging bags of different sizes, thereby ensuring smooth feeding of materials and avoiding interference of materials at the bag opening; the top bag opening component can be raised and lowered and can be swung, so that the top bag opening component can be adjusted to the best material inlet to the maximum extent, which is convenient for smoothly guiding the material into the bag opening mechanism for packaging, thereby improving the bag opening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the stable bag opening mechanism of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Please see attached Figure 1 As shown: a stable bag opening mechanism, including a vacuum negative pressure conveyor belt 1, the vacuum negative pressure conveyor belt 1 is provided with side bag opening components 2 that can move closer or farther away from each other on both sides near the feeding end; the side bag opening component 2 can be raised and provided with a top bag opening component 3 on one side. The utility model has a simple structure and adopts an adsorption type, and the vacuum negative pressure conveyor belt, the side bag opening component and the top bag opening component cooperate with each other to construct a bag opening space, which effectively ensures the stability of bag opening (large-area negative pressure adsorption on all sides). In addition, the bag opening method with two-side movement can meet the needs of fully opening packaging bags of different sizes, thereby ensuring smooth material feeding and avoiding interference of materials at the bag mouth. In this example, the top bag opening component can be raised and lowered and can be swung, so that the top bag opening component can be adjusted to the best material inlet to the maximum extent, which is convenient for smoothly guiding the material into the bag opening mechanism for packaging, thereby improving the bag opening efficiency.

[0022] On the basis of the above-mentioned embodiment, the top bag opening component 3 includes: a lifting bracket 31, a first driving source 32 and a micro-bag turning assembly 33. The lifting bracket 31 can be slidably inserted on the vacuum negative pressure conveyor belt 1, and the lifting bracket 31 is driven to rotate by a servo motor through a screw assembly to achieve height adjustment in the vertical direction; the first driving source 32 is fixed on the top of the lifting bracket 31, and is used to provide power for adjusting the height of the micro-bag turning assembly 33 in the vertical direction; the micro-bag turning assembly 33 is located above the lifting bracket 31; the first driving source 32 can drive the micro-bag turning assembly 33 to move back and forth; the micro-bag turning assembly 33 is used to set the bag mouth of the packaging bag slightly upward.

[0023] Based on the above embodiment, the first driving source 32 is a lifting cylinder; the lifting cylinder is fixed on the lifting bracket 31 by a fastener;

[0024] The micro-turnover bag assembly 33 includes a turnover base 331; one end of the turnover base 331 is rotatably provided with a negative pressure element 332, and the other end is swingably provided with a micro-turnover power source 333; the micro-turnover power source 333 can drive the negative pressure element 332 to swing back and forth.

[0025] Based on the above embodiment, the belt turning base 331 is provided with a long strip through hole; one end of the belt turning base 331 is fixedly connected to a rotating base;

[0026] The micro-turning power source 333 is a swing cylinder; the swing cylinder is swingably mounted on the belt turning base 331 through a cylinder connecting seat;

[0027] The negative pressure element 332 comprises a hollow connecting tube; a hollow first adsorption portion is welded at one end of the connecting tube; suction holes are arranged in an array on the first adsorption portion; and the area enclosed by all the suction holes is much smaller than the cross-sectional area of ​​the connecting tube.

[0028] Based on the above embodiment, the side bag opening assembly 2 includes the side bag opening base 21 fixed on the vacuum negative pressure conveyor belt 1; a telescopic cylinder 22 is provided on one side of the side bag opening base 21; and a second adsorption part 23 is provided at the output end of the telescopic cylinder 22.

[0029] Based on the above embodiment, the vacuum negative pressure conveyor belt 1 comprises a vacuum negative pressure conveyor support 11; a servo drive motor 12 is provided below the vacuum negative pressure conveyor support 11; a conveyor belt 13 is provided on the vacuum negative pressure conveyor support 11; the servo drive motor 12 can drive the conveyor belt 13 to rotate

[0030] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any person skilled in the art should be able to use the technical content disclosed above to make equivalent embodiments that are equivalent changes by slight changes or modifications without departing from the scope of the technical solution of the present invention. However, any brief modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A stable bag opening mechanism, comprising a vacuum negative pressure conveyor belt (1), characterized in that: The vacuum negative pressure conveyor belt (1) is provided with side bag opening components (2) on both sides close to the feeding end, which can move closer to or farther away from each other; one side of the side bag opening component (2) can be raised and provided with a top bag opening component (3); The top bag opening component (3) comprises: A lifting bracket (31), wherein the lifting bracket (31) can be slidably inserted on the vacuum negative pressure conveyor belt (1); A first driving source (32) is fixedly mounted on the top of the lifting bracket (31) and is used to provide power; and A micro-bag-turning assembly (33) is located above the lifting bracket (31); the first driving source (32) can drive the micro-bag-turning assembly (33) to move back and forth; The side bag opening assembly (2) comprises a side bag opening base (21) fixedly mounted on the vacuum negative pressure conveyor belt (1); a telescopic cylinder (22) is provided on one side of the side bag opening base (21); and a second adsorption portion (23) is provided at the output end of the telescopic cylinder (22).

2. The stable bag opening mechanism according to claim 1, characterized in that: The first driving source (32) is a lifting cylinder; the lifting cylinder is fixed on the lifting bracket (31) by a fastener; The micro-turnover bag assembly (33) comprises a belt turning base (331); one end of the belt turning base (331) is rotatably provided with a negative pressure element (332), and the other end is swingably provided with a micro-turnover power source (333); the micro-turnover power source (333) can drive the negative pressure element (332) to swing back and forth.

3. The stable bag opening mechanism according to claim 2, characterized in that: The belt turning base (331) is provided with a long strip through hole; one end of the belt turning base (331) is fixedly connected to a rotating base; The micro-turning power source (333) is a swing cylinder; the swing cylinder is swingably mounted on the belt turning base (331) via a cylinder connecting seat; The negative pressure element (332) comprises a hollow connecting tube; a hollow first adsorption portion is welded to one end of the connecting tube; an array of suction holes is arranged on the first adsorption portion; and the area enclosed by all the suction holes is much smaller than the cross-sectional area of ​​the connecting tube.

4. The stable bag opening mechanism according to claim 1, characterized in that: The vacuum negative pressure conveyor belt (1) comprises a vacuum negative pressure conveyor support (11); a servo drive motor (12) is provided below the vacuum negative pressure conveyor support (11); a conveyor belt (13) is arranged in an array on the vacuum negative pressure conveyor support (11); and the servo drive motor (12) can drive the conveyor belt (13) to rotate.

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