Blow joint and cigarette making machine using the same

Abstract

The utility model relates to a cigarette making machine production equipment field discloses a kind of blowing connector and the cigarette making machine of its application, blowing connector includes main part, and internal passage, positive pressure passage and air pressure balance hole are set in main part, internal passage is through and is set in main part, internal passage has first opening and second opening, first opening is used to connect the air hole of guide rail pipeline and second opening is used to connect negative pressure source, positive pressure passage side is connected with internal passage and other side is used to connect positive pressure source, and positive pressure passage and internal passage communication part is towards first opening side, air pressure balance hole side is connected with internal passage and other side is connected with positive pressure passage, and the communication position of air pressure balance hole and internal passage is located in the communication position of positive pressure passage and internal passage close to the side of second opening, by the inclined communication between positive pressure passage and internal passage setting, make positive pressure flow form spiral airflow, spiral airflow blows towards guide rail pipeline, ensure cleaning effect.

Description

Technical Field

[0001] This utility model relates to the technical field of cigarette machine production equipment, specifically to a blowing connector and its application in a cigarette machine. Background Technology

[0002] In cigarette making equipment, the guide rail system is located in the cigarette forming section (SE section) to ensure stable transport of the slit cigarette strips. However, during production, tobacco scraps, dust, glue, and oil can easily accumulate in the guide rail system, causing poor cigarette strip transport. This can lead to failure in the transfer of cigarette strip segments between the cigarette forming section (SE section) and the filter tip assembly section (MAX section), resulting in cigarette strip breakage, no-smoker operation, and other malfunctions and shutdowns. Consequently, equipment operating efficiency decreases, and even product quality is affected.

[0003] During equipment shutdown or routine maintenance, the guide rails and pipes are manually cleaned to ensure stable operation. However, even after prolonged operation, impurities can accumulate in the guide rails and pipes, affecting equipment operation and product quality. Frequent disassembly and reassembly of pipes not only requires significant manpower but also easily leads to problems such as stripped and loosened joints and threads.

[0004] In existing technologies, some solutions involve installing air-blowing connectors in the guide rail pipeline, using compressed air to blow through air holes in the pipeline to achieve cleaning. However, this method has limited cleaning effectiveness and is difficult to completely remove stubborn adhesive residues, oil stains, and tobacco residues, failing to meet the need for efficient and thorough cleaning. This results in the equipment still facing problems such as insufficient operational stability and a high failure rate. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that the blowing effect of existing air-blowing connectors cannot meet the cleaning requirements, and to provide an air-blowing connector that can form a spiral airflow to increase the blowing coverage area, shorten the suspension time of smoke particles, prevent secondary deposition, and ensure the cleaning effect.

[0006] To achieve the above objectives, this utility model provides an air blowing connector, including a main body. The main body has an internal channel, a positive pressure channel, and an air pressure balance hole. The internal channel is formed through the main body and has a first opening and a second opening. The first opening is used to connect to the air hole of the guide rail pipe, and the second opening is used to connect to the negative pressure source. One side of the positive pressure channel is connected to the internal channel, and the other side is used to connect to the positive pressure source. The connection between the positive pressure channel and the internal channel faces the first opening. One side of the air pressure balance hole is connected to the internal channel, and the other side is connected to the positive pressure channel. The connection position between the air pressure balance hole and the internal channel is located on the side of the connection position between the positive pressure channel and the internal channel closer to the second opening.

[0007] In some embodiments, the opening at the junction of the positive pressure channel and the internal channel forms an angle of 25° with the central axis of the internal channel.

[0008] In some embodiments, the air blowing connector further includes a connector element for connecting a positive pressure channel and a positive pressure source, one end of which is threaded to the body and the other end is used to connect to the positive pressure source.

[0009] In some embodiments, a filter structure is provided within the connector element.

[0010] In some embodiments, the ends of the connector element are provided with a sealing structure.

[0011] In some embodiments, the air blowing connector further includes a negative pressure pipe, a flange, and fasteners. One end of the negative pressure pipe is connected to the second opening and the other end is used to connect to a negative pressure source. The flange is fixedly mounted on the negative pressure pipe, and the fasteners are used to fix the flange and the main body. The main body has a mounting surface and the flange fits onto the mounting surface. The second opening is opened on the mounting surface, and the mounting surface has a connection hole for connecting fasteners.

[0012] In some embodiments, the axial direction of the connecting hole is oblique to the mounting surface; The air blowing connector also includes a gasket, which is sleeved around the negative pressure pipe. The gasket has a mating surface and a vertical surface. The mating surface is mated to the side of the flange that is away from the main body, and the vertical surface is perpendicular to the axis of the connecting hole. Fasteners are used to fix the connecting gasket, flange, and main body.

[0013] In some embodiments, the pad has a circumferentially split structure.

[0014] In some embodiments, the pad includes a first split portion and a second split portion, which are connected by at least one set of plugs and slots.

[0015] This utility model also provides a cigarette rolling machine, including the air blowing connector as described above.

[0016] The air-blowing connector provided by applying the above-mentioned technical solution of this utility model has the following effects: By using an inclined connection between the positive pressure channel and the internal channel, the positive pressure airflow is formed into a spiral airflow. The spiral airflow is blown into the guide rail pipe through the first opening and the air holes on the guide rail pipe, which increases the airflow coverage area and shortens the suspension time of smoke particles, thereby preventing their secondary deposition and ensuring the cleaning effect. The pressure balance hole compensates for the pressure difference, suppresses the intensity of turbulence in the channel, reduces the amplitude of negative pressure fluctuations, and thus extends the service life of the main body.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an air blowing connector according to one embodiment of the present invention; Figure 2 This is a top view of the air-blowing connector according to one embodiment of the present invention. Figure 3 This is a cross-sectional view of the air blowing connector in the AA direction according to one embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of an air blowing connector according to one embodiment of the present invention, after configuring connector elements, negative pressure pipe, flange and gasket. Figure 5 This is a cross-sectional view along the AA direction of an air blowing connector according to one embodiment of the present invention, after configuring a negative pressure pipe, flange and gasket. Figure 6 yes Figure 5 An explosion diagram; Figure 7 This is a cross-sectional view of the air blowing connector in the AA direction according to another embodiment of this utility model; Figure 8 This is a cross-sectional view along the AA direction of another embodiment of the air blowing connector after configuring the negative pressure pipe, flange and gasket. Figure 9 yes Figure 8 An explosion diagram; Figure 10 This is a three-dimensional structural diagram of the connection between the negative pressure pipe and the pad according to one embodiment of the present invention; Figure 11 This is a top view schematic diagram of the connection between the negative pressure pipe and the pad in one embodiment of this utility model; Figure 12 yes Figure 11 A partial cross-sectional diagram.

[0019] Explanation of reference numerals in the attached figures 1. Main body; 11. Internal channel; 12. Positive pressure channel; 13. Air pressure balance hole; 14. First opening; 15. Second opening; 16. Mounting surface; 17. Connecting hole; 18. Groove; 2. Connector element; 3. Negative pressure pipe; 4. Flange; 6. Gasket; 6a. First split part; 6b. Second split part; 61. Fitting surface; 62. Vertical surface; 63. Through hole; 64. Plug; 65. Slot. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] This utility model provides an air blowing connector, combined with the attached... Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the air blowing connector includes a main body 1, in which an internal channel 11, a positive pressure channel 12, and an air pressure balance hole 13 are provided.

[0022] An internal channel 11 is formed through the main body 1. The internal channel 11 has a first opening 14 and a second opening 15. The first opening 14 is used to connect the air hole of the guide rail pipe and the second opening 15 is used to connect the negative pressure source.

[0023] Positive pressure channel 12 is connected to internal channel 11 on one side and to a positive pressure source on the other side, as detailed in the appendix. Figure 3 As shown, the connection between the positive pressure channel 12 and the internal channel 11 faces the first opening 14. Traditional connections are vertical, meaning the connection between the positive pressure channel 12 and the internal channel 11 is perpendicular to the axis of the internal channel 11. In comparison, the air-blowing connector provided in this application allows the positive pressure airflow to form a spiral airflow within the internal channel 11. The airflow passes through the first opening 14 and the air holes in the guide rail pipe, blowing onto and cleaning the guide rail pipe. This increases the coverage area of ​​the airflow, and the spiral airflow shortens the suspension time of tobacco particles, preventing secondary deposition of tobacco particles on the guide rail pipe and ensuring effective cleaning of the guide rail pipe.

[0024] The pressure balance hole 13 is connected to the internal channel 11 on one side and to the positive pressure channel 12 on the other side. (See attached diagram.) Figure 3 As shown, the connection point between the pressure balance hole 13 and the internal channel 11 is located on the side near the second opening 15 where the connection point between the positive pressure channel 12 and the internal channel 11 is located. This achieves differential pressure compensation, suppresses turbulence intensity within the channel, reduces negative pressure fluctuations during operation, and thus extends the service life of the main body 1, balancing cleaning strength and negative pressure regulation. The main body 1 can be made of engineering plastics to extend its service life.

[0025] In some preferred embodiments, as shown in the appendix Figure 3 As shown, the opening at the junction of the positive pressure channel 12 and the internal channel 11 forms an angle of 25° with the central axis of the internal channel 11. Under this 25° angle design, the spiral airflow formed by the positive pressure airflow has a good cleaning effect on the guide rail pipeline.

[0026] In some preferred embodiments, combined with appendix Figure 4As shown, the air blowing connector also includes a connector element 2, which connects the positive pressure channel 12 and the positive pressure source. Specifically, one end of the connector element 2 is threaded to the main body 1, and the other end is used to connect to the positive pressure source. Disconnecting the connector element 2 from the main body 1 cuts off the positive pressure airflow, enabling rapid connection and disconnection.

[0027] In some preferred embodiments, a filter structure is provided inside the connector element 2. The connector element 2 needs to be connected to the positive pressure channel 12 and the positive pressure source. The connector element 2 needs to have a channel with a conduction function inside. The filter structure inside the connector element 2 filters the positive pressure airflow to prevent blockage in the air blowing connector and connector element 2, and to prevent new impurities from being blown into the guide rail pipeline. Specifically, the filter structure includes, but is not limited to, multi-layer filter mesh.

[0028] In some preferred embodiments, a sealing structure is provided at the end of the connector element 2 to ensure airtightness. Specifically, the sealing structure includes, but is not limited to, a sealing rubber ring.

[0029] In some preferred embodiments, combined with appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, the air blowing connector also includes a negative pressure pipe 3, a flange 4, and fasteners. One end of the negative pressure pipe 3 is connected to the second opening 15, and the other end is used to connect to a negative pressure source. The flange 4 is fixedly mounted on the negative pressure pipe 3, and the fasteners are used to fix the flange 4 and the main body 1, thereby realizing the assembly and disassembly of the negative pressure pipe 3 and the main body 1. Specifically, the main body 1 has a mounting surface 16, and the flange 4 is fitted to the mounting surface 16. The second opening 15 is opened on the mounting surface 16, and the mounting surface 16 has a connecting hole 17 for connecting the fasteners. The fasteners are generally bolts. By passing the bolts through the flange 4 and threading them into the connecting hole 17, the flange 4 can be connected to the negative pressure pipe 3 and fixed to the main body 1, making assembly and disassembly convenient and quick.

[0030] In a further preferred embodiment, the negative pressure pipe 3 and the flange 4 are integrally formed. The connection between the flange and the pipe is generally a separate connection, meaning the flange and the pipe are two independent parts, fixedly connected by welding or threaded connections. In this embodiment, the flange 4 is made of the same material as the negative pressure pipe 3 and is integrally formed with it, reducing the steps involved in connecting the flange 4 to the negative pressure pipe 3 and making the installation of the air blowing connector more convenient and quick.

[0031] In a further preferred embodiment, combined with the appendix Figure 7 Appendix Figure 8 and appendix Figure 9As shown, a groove 18 for inserting the negative pressure pipe 3 is provided at the second opening 15. In this embodiment, there is a certain distance between the end of the negative pressure pipe 3 and the flange 4. This section of the negative pressure pipe 3 can be inserted into the groove 18 to connect with the main body 1, thereby strengthening the connection between the negative pressure pipe 3 and the main body 1.

[0032] During actual installation, due to issues with installation space and orientation, the axial direction of the connecting hole 17 may be oblique to the mounting surface 16, making it difficult for the fasteners to guarantee a secure connection. Therefore, in conjunction with the attached... Figure 4 To be continued Figure 9 The air-blowing connector also includes a gasket 6, which is fitted around the negative pressure pipe 3. The gasket 6 has a mating surface 61 and a vertical surface 62. The mating surface 61 is mated to the side of the flange 4 away from the main body 1, and the vertical surface 62 is perpendicular to the axis of the connecting hole 17. Fasteners are used to fix the connecting gasket 6, the flange 4, and the main body 1. The gasket 6 is configured to provide a plane perpendicular to the connecting hole 17 for the fastener connection. To ensure the connection effect of the fastener, the plane fit between the gasket 6 and the flange 4 must be greater than 98%.

[0033] In a further preferred embodiment, the pad 6 has a through hole 63 for fasteners, facilitating fastener insertion and connection without the need for self-tapping, making it convenient and quick. Additionally, in conjunction with the attached... Figure 5 Appendix Figure 6 and appendix Figure 8 and attached Figure 9 As shown, the through hole 63 is countersunk at the vertical plane 62.

[0034] In practical use, the negative pressure pipe 3 is generally a flexible hose, which is prone to bending. If the gasket 6 uses a common annular gasket that fits the outer diameter of the negative pressure pipe 3, it is easy to get stuck at the bend and fail to fit snugly with the flange 4. If the gasket 6 uses an annular gasket with an inner diameter larger than the outer diameter of the negative pressure pipe 3, the annular gasket is only connected to the flange 4 by fasteners, and the pipe body of the negative pressure pipe 3 cannot provide support for the annular gasket. Over time, this can easily cause stress fatigue of the fasteners and reduce the connection strength. In addition, when the flange 4 and the negative pressure pipe 3 are integrally formed, the annular gasket needs to be fitted onto the negative pressure pipe 3 from the side away from the flange 4. If the negative pressure pipe 3 is long, the movement of the annular gasket on the negative pressure pipe 3 takes a long time, reducing installation efficiency.

[0035] In this regard, in conjunction with the appendix Figure 10 Appendix Figure 11As shown, this embodiment uses a circumferentially split-type gasket 6. The split parts of the gasket 6 are spliced ​​together at one end of the negative pressure pipe 3 where the flange 4 is located to form the gasket 6. After splicing, the gasket 6 can be moved a short distance along the negative pressure pipe 3 to fit the flange 4, improving installation efficiency. The inner diameter of the spliced ​​gasket 6 matches the outer diameter of the negative pressure pipe 3. Since the gasket 6 is directly spliced ​​at the end of the negative pressure pipe 3, it does not need to be moved a long distance along the negative pressure pipe 3, eliminating the risk of the gasket 6 getting stuck at the bend of the negative pressure pipe 3.

[0036] In some preferred embodiments, combined with appendix Figure 12 As shown, the pad 6 includes a first split part 6a and a second split part 6b, which are connected by at least one set of plugs 64 and slots 65. The split parts are connected by plugs 64 and slots, making installation convenient and quick, and improving installation efficiency. In this embodiment, the first split part 6a and the second split part 6b are connected by two sets of plugs 64 and slots 65. The first split part 6a has one plug 64 and one slot 65, while the second split part 6b has one slot 65 and one plug 64. This design distinguishes the orientation of the first split part 6a and the second split part 6b.

[0037] This utility model also provides a cigarette making machine, including an air blowing connector as described in any of the above embodiments. Specifically, the first opening 14 in the air blowing connector is connected to the air hole of the guide rail pipe in the cigarette making machine. Positive pressure airflow is input from the positive pressure pipe, forming a spiral airflow in the internal channel 11. The spiral airflow is blown through the first opening 14 and the air hole into the guide rail pipe for cleaning.

[0038] Specifically, when the air-blowing connector of any of the above embodiments is applied to an M8 cigarette machine, where the guide rail is a V-shaped guide rail, the shape of the main body 1 can be adapted for connection with the air holes of the V-shaped guide rail. Of course, when using the air-blowing connector for cleaning the guide rail in other types of cigarette machines, the shape of the main body 1 can be modified accordingly for connection with air holes of other types of guide rails, either specifically or universally.

[0039] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0040] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0041] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An air blowing connector, comprising a main body (1), characterized in that, The main body (1) is provided with an internal channel (11), a positive pressure channel (12) and a pressure balance hole (13). The internal channel (11) is opened through the main body (1). The internal channel (11) has a first opening (14) and a second opening (15). The first opening (14) is used to connect the air hole of the guide rail pipeline and the second opening (15) is used to connect the negative pressure source. The positive pressure channel (12) is connected to the internal channel (11) on one side and is used to connect the positive pressure source on the other side. The part of the positive pressure channel (12) that connects to the internal channel (11) faces the first opening (14). The pressure balance hole (13) is connected to the internal channel (11) on one side and to the positive pressure channel (12) on the other side. The connection position of the pressure balance hole (13) and the internal channel (11) is located on the side of the connection position of the positive pressure channel (12) and the internal channel (11) close to the second opening (15).

2. The air-blowing connector according to claim 1, characterized in that, The opening at the junction of the positive pressure channel (12) and the internal channel (11) forms an angle of 25° with the central axis of the internal channel (11).

3. The air-blowing connector according to claim 1, characterized in that, The air blowing connector also includes a connector element (2) for connecting the positive pressure channel (12) and the positive pressure source. One end of the connector element (2) is threaded to the main body (1) and the other end is used to connect to the positive pressure source.

4. The air-blowing connector according to claim 3, characterized in that, The connector element (2) is equipped with a filter structure.

5. The air-blowing connector according to claim 3, characterized in that, The end of the connector element (2) is provided with a sealing structure.

6. The air-blowing connector according to claim 1, characterized in that, The air blowing connector also includes a negative pressure pipe (3), a flange (4) and fasteners. One end of the negative pressure pipe (3) is connected to the second opening (15) and the other end is used to connect to a negative pressure source. The flange (4) is fixedly installed on the negative pressure pipe (3). The fasteners are used to fix the flange (4) and the main body (1). The main body (1) has a mounting surface (16) and the flange (4) is attached to the mounting surface (16). The second opening (15) is opened on the mounting surface (16), and the mounting surface (16) has a connecting hole (17) for connecting the fastener.

7. The air-blowing connector according to claim 6, characterized in that, The axial direction of the connecting hole (17) is oblique to the mounting surface (16); The air blowing connector also includes a gasket (6), which is sleeved around the negative pressure pipe (3). The gasket (6) has a mating surface (61) and a vertical surface (62). The mating surface (61) is mated to the side of the flange (4) away from the main body (1). The vertical surface (62) is perpendicular to the axis of the connecting hole (17). The fastener is used to fix the gasket (6), the flange (4) and the main body (1).

8. The air-blowing connector according to claim 7, characterized in that, The pad (6) has a circumferential split structure.

9. The air-blowing connector according to claim 8, characterized in that, The pad (6) includes a first split part (6a) and a second split part (6b), and the first split part (6a) and the second split part (6b) are connected by at least one set of plugs (64) and slots (65).

10. A cigarette rolling machine, characterized in that, Includes the air-blowing connector as described in any one of claims 1 to 9.

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