Bag bottom air supply device of bag making machine
By installing a filter plate and a diversion pipe driven by a rotating motor in the air supply device at the bottom of the bag making machine, the problem of air impurity pollution is solved, and the quality and safety of the packaging bags are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-06
AI Technical Summary
The existing bag-bottom air supply device of the bag-making machine does not effectively filter the introduced air, resulting in impurities contaminating the bag bottom material and affecting the quality and safety of the packaging bag.
The bag bottom air supply device of the bag making machine is equipped with a first filter plate and a second filter plate inside the air inlet pipe. Combined with the slide rail and the diversion pipe driven by the rotating motor, the air can be filtered and flexibly supplied.
It effectively filters impurities in the air, prevents dust and microorganisms from contaminating the bottom material of the bag, improves the forming quality and sealing of the packaging bag, and ensures food safety and appearance quality.
Smart Images

Figure CN223972230U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of bottom air supply devices for bag making machines, and more particularly to bottom air supply devices for bag making machines. Background Technology
[0002] Bag-making machines play an indispensable role in the modern packaging industry, widely used in food, daily chemicals, pharmaceuticals, and many other fields to produce packaging bags of various specifications and materials. Whether it's a common plastic packaging bag or a paper or composite material packaging bag, the forming quality of the bag bottom directly affects the overall quality and performance of the bag.
[0003] In the bag-making process, the bottom air supply device plays a crucial role in the processing of the bag bottom. For example, in the heat-sealing process, a suitable airflow is needed to assist in the shaping and welding of the bag bottom material. However, a significant problem exists in the bottom air supply devices of many current bag-making machines: the introduced air is not effectively filtered.
[0004] Unfiltered air typically contains a large number of impurities, such as dust particles, oil, and microorganisms. When this air containing impurities enters the bag bottom air supply system, it directly affects the processing quality of the bag bottom. Taking the production of food packaging bags as an example, if unfiltered air participates in the heat-sealing process of the bag bottom, impurities such as dust and microorganisms may adhere to the surface of the bag bottom material. This can not only contaminate the food inside the packaging but also lead to inadequate heat sealing at the bag bottom, affecting the airtightness of the packaging and thus shortening the shelf life of the food.
[0005] For packaging bags with high appearance requirements, such as cosmetic packaging bags, unfiltered dust particles from the air may become embedded in the material surface during the bottom forming process, forming obvious defects and greatly affecting the product's aesthetics and brand image. In the production of electronic component packaging bags, oil stains and other impurities may enter the bottom of the bag with the airflow, potentially corroding the electronic components and affecting the product's quality and safety. Those skilled in the art have provided a bottom air supply device for bag-making machines to solve the problems mentioned in the background section. Utility Model Content
[0006] To address the problems mentioned in the background art, this application provides a bag bottom air supply device for a bag making machine.
[0007] The bag bottom air supply device for the bag making machine provided in this application adopts the following technical solution:
[0008] The bag bottom air supply device of the bag making machine includes a fixed frame, a connecting plate fixedly installed on one side of the fixed frame, an air pump fixedly installed on the upper end of the connecting plate, an air outlet pipe connected to the upper end of the air pump, an air inlet pipe connected to one side of the air pump, a threaded sleeve fixedly installed on one side of the air inlet pipe, the threaded sleeve being threadedly connected to the air pump, a first filter plate fixedly installed inside the air inlet pipe, and a second filter plate fixedly installed inside the air inlet pipe on the side near the first filter plate.
[0009] Preferably, two slide rails are fixedly installed inside the fixed frame, and a U-shaped plate is slidably connected above the slide rails.
[0010] Preferably, a rotating motor is fixedly installed on one side of the U-shaped plate, and a diverter pipe is fixedly installed on one end of the output shaft of the rotating motor.
[0011] Preferably, the external connection of the diverter is a plurality of jet pipes, and the plurality of jet pipes are arranged horizontally at equal intervals.
[0012] Preferably, the diverter pipe and the outlet pipe are connected by a flexible air guide tube.
[0013] In summary, this application includes the following beneficial technical effects: by setting an air inlet pipe, the air inlet pipe is equipped with a first filter plate and a second filter plate, which can filter impurities in the air, making the air supply clean and preventing dust, microorganisms and other impurities from adhering to the surface of the bag bottom material, which would not only contaminate the food inside the food packaging, but also cause the bag bottom heat seal to be insecure.
[0014] The sliding rails facilitate gas supply to packaging bags in different locations, and the entire distribution pipe can be rotated by a motor for better gas supply. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the bag bottom air supply device of the bag making machine in the embodiments of this application;
[0016] Figure 2 This is a schematic diagram of the air inlet pipe structure of the bag bottom air supply device of the bag making machine in the embodiments of this application;
[0017] Figure 3 This is a schematic diagram of the internal structure of the air inlet pipe of the bag bottom air supply device of the bag making machine in the embodiments of this application.
[0018] Explanation of reference numerals in the attached drawings: 1. Fixed frame; 2. Connecting plate; 3. Air pump; 4. Air outlet pipe; 5. Slide rail; 6. U-shaped plate; 7. Rotating motor; 8. Air guide hose; 9. Diverter pipe; 10. Jet pipe; 12. Air inlet pipe; 13. Threaded sleeve; 14. First filter plate; 15. Second filter plate. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] like Figures 1-3 As shown, the bag bottom air supply device of the bag making machine includes a fixed frame 1. A connecting plate 2 is fixedly installed on one side of the fixed frame 1. An air pump 3 is fixedly installed on the upper end of the connecting plate 2. An air outlet pipe 4 is connected to the upper end of the air pump 3. An air inlet pipe 12 is connected to one side of the air pump 3. A threaded sleeve 13 is fixedly installed on one side of the air inlet pipe 12. The threaded sleeve 13 is threadedly connected to the air pump 3. A first filter plate 14 is fixedly installed inside the air inlet pipe 12. A second filter plate 15 is fixedly installed inside the air inlet pipe 12 on the side close to the first filter plate 14.
[0021] The air inlet pipe 12, which is equipped with a first filter plate 14 and a second filter plate 15, can filter out impurities in the air, ensuring clean air supply and preventing dust, microorganisms, and other impurities from adhering to the surface of the bag bottom material. This would not only contaminate the food inside the food packaging but also cause the bag bottom to not be properly heat-sealed.
[0022] In this embodiment, two slide rails 5 are fixedly installed inside the fixed frame 1, and a U-shaped plate 6 is slidably connected above the slide rails 5.
[0023] In this embodiment, a rotating motor 7 is fixedly installed on one side of the U-shaped plate 6, and a diverter pipe 9 is fixedly installed on one end of the output shaft of the rotating motor 7.
[0024] In this embodiment, the external connection of the diversion pipe 9 is a plurality of jet pipes 10, and the plurality of jet pipes 10 are arranged horizontally at equal intervals.
[0025] The slide rail 5 facilitates gas supply to packaging bags at different locations, and the entire diversion pipe 9 can be rotated by the motor 7 to improve the gas supply effect.
[0026] In this embodiment, the diversion pipe 9 and the outlet pipe 4 are connected by a flexible air guide hose 8.
[0027] The implementation principle of the bag bottom air supply device of the bag making machine in this application embodiment is as follows: through the air inlet pipe 12, the air inlet pipe 12 is provided with a first filter plate 14 and a second filter plate 15, which can filter impurities in the air, so that the air supply is clean and prevent dust, microorganisms and other impurities from adhering to the surface of the bag bottom material, which will not only contaminate the food inside the food packaging, but may also cause the bag bottom heat seal to be insecure. The slide rail 5 facilitates the supply of air to the packaging bags at different positions, and the entire diversion pipe 9 can be rotated by the rotating motor 7 to make the air supply effect better.
[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bag bottom air supply device for a bag making machine, characterized by: The utility model provides a kind of air supply device, including fixed frame (1), one side of the fixed frame (1) is fixedly installed with connecting plate (2), the upper end of the connecting plate (2) is fixedly installed with air pump (3), the upper end of the air pump (3) is connected with air outlet pipe (4), one side of the air pump (3) is connected with air inlet pipe (12), one side of the air inlet pipe (12) is fixedly installed with threaded sleeve (13), the threaded sleeve (13) is connected with air pump (3) in screw thread, the inside of the air inlet pipe (12) is fixedly installed with first filter plate (14), the inside of the air inlet pipe (12) is fixedly installed with second filter plate (15) in the side close to first filter plate (14).
2. The bag bottom gas supply device of the bag making machine according to claim 1, characterized by: The inside of the fixed frame (1) is fixedly installed with two slide rails (5), the upper side of the slide rail (5) is slidably connected with the board of the character of Chinese character nu (6).
3. The bag bottom gas supply device of the bag making machine according to claim 2, characterized by: One side of the board of the character of Chinese character nu (6) is fixedly installed with rotary motor (7), the output shaft one end of the rotary motor (7) is fixedly installed with shunt pipe (9).
4. The bag bottom gas supply device of the bag making machine according to claim 3, characterized by: The outside of the shunt pipe (9) is connected with several air injection pipes (10), and several air injection pipes (10) are horizontally equidistantly arranged.
5. The bag bottom gas supply apparatus of the bag making machine according to claim 4, characterized by: The shunt pipe (9) and air outlet pipe (4) are connected by air guide hose (8).