Cigarette filter stick forming equipment based on linear motor
By using a linear motor to drive the heating setting device to move in the cigarette filter rod forming equipment, the problems of small equipment space and complex structure of the mandrel drive device are solved, and high-quality Venturi cavity molding is achieved.
Patent Information
- Application Number
- CN202421653650.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing cigarette filter rod forming equipment has the problem of small equipment space, complex structure of the mandrel drive device and inconvenient arrangement.
The cigarette filter rod forming equipment based on a linear motor is adopted to drive the heating setting device to move through the driving device, replacing the movement of the mandrel, ensuring that the mandrel and the heating setting device are coaxial, and forming the Venturi cavity is realized.
It solves the problems of small equipment space and complex structure of the mandrel drive device, improves the quality and efficiency of filter rod molding, and ensures the correct molding of the Venturi cavity.
Smart Images
Figure CN222954864U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a filter rod forming device, in particular to a cigarette filter rod forming device based on a linear motor. Background Technique
[0002] As a type of new tobacco, heated tobacco products are different from conventional cigarettes. The filter rod is required to have the functions of extracting smoke and cooling, and in terms of quality, low suction resistance and low filtration are required.
[0003] In recent years, new filter tips for heated tobacco products have been continuously developed. As a new type of single-component filter rod, the Venturi filter rod changes the smoke pressure by continuously changing the inner diameter on the premise of realizing smoke extraction, thereby realizing a certain degree of smoke cooling and having a good sensory smoking experience.
[0004] At present, the forming of the Venturi filter rod is mainly realized by the cooperation of the core rod and the hot die. In the existing equipment, the Venturi-shaped cavity is mainly formed by adjusting the position of the core rod. However, this method has the problems of small equipment space, complex structure of the core rod driving device and inconvenient layout. Content of the Utility Model
[0005] The purpose of the utility model is to provide a cigarette filter rod forming device based on a linear motor to solve the technical problems of small equipment space, complex structure of the core rod driving device and inconvenient layout in the prior art.
[0006] The utility model provides a cigarette filter rod forming device based on a linear motor, which includes a wire feeding device and a heating and shaping device, and also includes a core rod. The core rod and the wire feeding device are both fixed on the frame. The core rod penetrates through the wire feeding device and is connected to the heating and shaping device in a non-contact manner. A driving device is arranged on the frame, and the driving device is connected to the heating and shaping device.
[0007] In the aforementioned cigarette filter rod forming device based on a linear motor, preferably, the driving device is a linear motor. The linear motor is fixed on the frame by bolts, and the moving seat of the linear motor is fixedly connected to the heating and shaping device through a connecting plate.
[0008] In the aforementioned cigarette filter rod forming device based on a linear motor, preferably, a plurality of cooling and shaping devices are further arranged on the frame, and the cooling and shaping devices, the heating and shaping devices, the wire feeding device and the core rod are all coaxially arranged.
[0009] In the aforementioned cigarette filter rod forming device based on a linear motor, preferably, the cooling and shaping device includes a cooling outer shell, a cooling core mold, and a cooling gas connector. The cooling core mold is fixedly arranged inside the cooling outer shell. A cooling gas chamber is formed between the outer wall of the cooling core mold and the inner wall of the cooling outer shell. The cooling core mold is axially provided with a cooling channel, and cooling air holes are arranged on the side wall of the cooling core mold. The cooling air holes communicate the cooling gas chamber with the cooling channel.
[0010] In the aforementioned cigarette filter rod forming device based on a linear motor, preferably, the heating and shaping device includes a heating outer shell, a heating core mold, and a heating gas connector. The heating core mold is fixedly arranged inside the heating outer shell. A heating gas chamber is formed between the outer wall of the heating core mold and the inner wall of the heating outer shell. The heating core mold is axially provided with a heating channel, and heating air holes are arranged on the side wall of the heating core mold. The heating air holes communicate the heating gas chamber with the heating channel.
[0011] In the aforementioned cigarette filter rod forming device based on a linear motor, preferably, the core rod includes a first cylindrical section, a frustum section, and a second cylindrical section. One end of the first cylindrical section is fixedly connected to the second cylindrical section through the frustum section.
[0012] In the aforementioned cigarette filter rod forming device based on a linear motor, preferably, a core rod fixing assembly is fixedly installed on the frame. The core rod fixing assembly includes a fixed bottom plate, a clamping upright seat, a core rod cantilever rod, and a locking end cap. The fixed bottom plate is fixed on the frame by bolts. The clamping upright seat is fixed on the fixed bottom plate by bolts. An installation pipe and a clamping block are fixedly arranged on the clamping upright seat. One end of the core rod cantilever rod passes through the installation pipe and the clamping block. The clamping block is used to clamp the core rod cantilever rod. A claw structure is fixedly arranged at the other end of the core rod cantilever rod. The first cylindrical section is inserted and connected with the claw structure. The first cylindrical section is fixed on the core rod cantilever rod through the cooperation of the locking end cap and the claw structure.
[0013] Compared with the prior art, the utility model includes a wire feeding device, a heating and shaping device, and a core rod fixedly arranged on a frame. The core rod passes through the wire feeding device and is connected to the heating and shaping device in a non-contact manner. A driving device is arranged on the frame, and the driving device is connected to the heating and shaping device. The utility model drives the heating and shaping device to move through the driving device, replacing the core rod movement mode in the prior art. Since there is sufficient space above and below the heating and shaping device, it is convenient to fix the driving device. In addition, the reciprocating movement mode of the heating and shaping device is adopted instead of the reciprocating movement mode of the core rod, so that the core rod can always maintain a coaxial state with the heating and shaping device, thereby ensuring the forming quality of the Venturi cavity and the quality of the produced filter rods. Description of the Drawings
[0014] Figure 1 is an isometric view of the present utility model;
[0015] Figure 2 is a sectional view of the cooling and shaping device;
[0016] Figure 3 is a sectional view of the heating and shaping device;
[0017] Figure 4 is a schematic structural view of the mandrel;
[0018] Figure 5 is an isometric view of the mandrel fixing assembly;
[0019] Figure 6 is a sectional view of the mandrel fixing assembly.
[0020] Description of reference numerals in the drawings: frame 1, wire feeding device 2, heating and shaping device 3, mandrel 4, driving device 5, moving seat 6 of the linear motor, connecting plate 7, cooling and shaping device 8, cooling outer shell 9, cooling core mold 10, cooling gas joint 11, cooling gas chamber 12, cooling channel 13, cooling air hole 14, heating outer shell 15, heating core mold 16, heating gas joint 17, heating gas chamber 18, heating channel 19, heating air hole 20, first cylindrical section 21, frustum section 22, second cylindrical section 23, fixed bottom plate 24, clamping upright seat 25, mandrel cantilever rod 26, locking end cap 27, mounting pipe 28, clamping block 29, claw structure 30. Detailed implementation manners
[0021] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.
[0022] Embodiments of the present utility model: As Figures 1 - 6 shown, a cigarette filter rod forming device based on a linear motor includes a wire feeding device 2, a heating and shaping device 3, and a mandrel 4. The wire feeding device 2 and the mandrel 4 are both fixedly arranged on the frame 1. The mandrel 4 penetrates through the wire feeding device 2 and is connected to the heating and shaping device 3 in a non-contact manner. A driving device 5 is arranged on the frame 1, and the driving device 5 is connected to the heating and shaping device 3.
[0023] The wire feeding device 2, the heating and shaping device 3, and the mandrel 4 are all coaxially arranged. The wire feeding device is used to converge the loosened tow. The converged tow enters the heating and shaping device 3 and is heated by high-temperature and high-pressure gas and forms a cigarette filter rod under the action of a plasticizer. The wire feeding device 2 is a prior art and its specific structure will not be described in detail in this embodiment.
[0024] The driving device 5 can be arranged above or below the heating and shaping device 3, and can be freely selected according to the space on the rack 1. In this embodiment, the driving device 5 is arranged above the heating and shaping device 3. The driving device 5 is used to drive the heating and shaping device 3 to perform linear reciprocating motion. The heating and shaping device 3 cooperates with the mandrel 4 to form a Venturi-shaped cavity inside the cigarette filter rod during shaping.
[0025] In a specific embodiment, the driving device 5 is a linear motor. The linear motor is fixed to the rack 1 by bolts, and the mover seat 6 of the linear motor is fixedly connected to the heating and shaping device 3 through a connecting plate 7.
[0026] The linear motor is electrically connected to the PLC programmable controller (not shown in the figure) of the filter rod forming equipment. The working state of the linear motor is controlled by the PLC programmable controller. The linear motor is a commercially available product and can be directly purchased. It should be noted that the driving device 5 can also use other structures, such as a cam structure, a cylinder structure, a hydraulic cylinder structure, etc. However, for some filter rods with a more complex Venturi cavity structure, the linear motor scheme is preferably adopted. For example, in the case where the cavity sizes inside the filter rods in a cycle unit are different, it is convenient to control the position of the heating and shaping device 3 by using a linear motor, so as to process the required cavity.
[0027] Furthermore, a plurality of cooling and shaping devices 8 are also arranged on the rack 1. The cooling and shaping devices 8, the heating and shaping device 3, the wire feeding device 2 and the mandrel 4 are all coaxially arranged. In this embodiment, the number of cooling and shaping devices 8 is three. The three cooling and shaping devices 8 are coaxially arranged and there is a certain distance between adjacent two. It should be noted that the number of cooling and shaping devices 8 can be increased or decreased according to actual needs.
[0028] The cooling and shaping device 8 includes a cooling outer shell 9, a cooling core mold 10 and a cooling gas joint 11. The cooling core mold 10 is fixedly arranged inside the cooling outer shell 9. A cooling gas chamber 12 is formed between the outer wall of the cooling core mold 10 and the inner wall of the cooling outer shell 9. The cooling core mold 10 is axially formed with a cooling channel 13. Cooling air holes 14 are arranged on the side wall of the cooling core mold 10. The cooling air holes 14 communicate the cooling gas chamber 12 with the cooling channel 13.
[0029] After the cigarette filter rod is formed, it enters the cooling channel 13 of the cooling and shaping device 8. The diameter of the cooling channel 13 is equal to the outer diameter of the cigarette filter rod. The cooling gas enters the cooling gas chamber 12 through the cooling gas joint 11, and then evenly enters the cooling channel 13 through the cooling air holes 14 to cool down the cigarette filter rod.
[0030] Further, the heating and shaping device 3 includes a heating outer shell 15, a heating mandrel 16, and a heating gas connector 17. The heating mandrel 16 is fixedly arranged inside the heating outer shell 15. A heating gas chamber 18 is formed between the outer wall of the heating mandrel 16 and the inner wall of the heating outer shell 15. The heating mandrel 16 is axially formed with a heating channel 19. Heating air holes 20 are arranged on the side wall of the heating mandrel 16, and the heating air holes 20 communicate the heating gas chamber 18 with the heating channel 19.
[0031] After the tow enters the heating channel 19, the high-temperature and high-pressure gas enters the heating gas chamber 18 through the heating gas connector 17, and then evenly enters the heating channel 19 through the heating air holes 20. The high-temperature and high-pressure gas acts on the tow, and under the action of the plasticizer, the tow is solidified to form a cigarette filter rod.
[0032] Further, the core rod 4 includes a first cylindrical section 21, a frustum section 22, and a second cylindrical section 23. One end of the first cylindrical section 21 is fixedly connected to the second cylindrical section 23 through the frustum section 22. The diameter of the first cylindrical section 21 is larger than that of the second cylindrical section 23. The diameter of one end of the frustum section 22 is equal to that of the first cylindrical section 21, and the diameter of the other end of the frustum section 22 is equal to that of the second cylindrical section 23.
[0033] It should be noted that for processing Venturi cavities of different shapes, the structure of the core rod 4 needs to be adjusted. The cavity processed by the core rod 4 provided in this embodiment has a structure with a cylindrical cavity in the middle and conical cavities at both ends, and the cavities communicate with each other.
[0034] Furthermore, a core rod fixing assembly is fixedly installed on the frame 1. The core rod fixing assembly includes a fixed bottom plate 24, a clamping upright seat 25, a core rod cantilever rod 26, and a locking end cap 27. The fixed bottom plate 24 is fixed on the frame 1 by bolts. The clamping upright seat 25 is fixed on the fixed bottom plate 24 by bolts. An installation pipe 28 and a clamping block 29 are fixedly arranged on the clamping upright seat 25. One end of the core rod cantilever rod 26 passes through the installation pipe 28 and the clamping block 29. The clamping block 29 is used to clamp the core rod cantilever rod 26. A claw structure 30 is fixedly arranged at the other end of the core rod cantilever rod 26. The first cylindrical section 21 is inserted and connected with the claw structure 30, and the first cylindrical section 21 is fixed on the core rod cantilever rod 26 through the cooperation of the locking end cap 27 and the claw structure 30.
[0035] The structure of the clamping block 29 is similar to that of a hoop structure. A locking bolt is installed on the clamping block 29. By tightening the locking bolt, the clamping block 29 can clamp the end of the core rod cantilever rod 26. The inner diameter of the installation pipe 28 is equal to the diameter of the core rod cantilever rod 26. The function of the installation pipe 28 is to improve the stability and firmness of the core rod cantilever rod 26. The function of the core rod cantilever rod 26 is to facilitate the installation and fixation of the core rod 4 and ensure the coaxiality of the core rod 4 and the heating and shaping device 3.
[0036] Working principle of the present utility model: The loosened tow converges in the wire feeding device 2. When the tow passes through the heating and shaping device 3, it contacts the high-temperature and high-pressure gas in the heating channel 19. Under the action of the plasticizer, the tow is solidified to form a cigarette filter rod. When forming the cigarette filter rod, the heating and shaping device 3 is driven by a linear motor to reciprocate horizontally. When the heating and shaping device 3 moves, the positional relationship between the mandrel 4 and the heating and shaping device 3 continuously changes, so as to form a Venturi-shaped cavity in the cigarette filter rod. The formed cigarette filter rod enters the cooling and shaping device 8 for cooling. Finally, it is sent to the splitting device for splitting.
[0037] The structure, features and function effects of the present utility model have been described in detail based on the embodiments shown in the drawings. The above is only the preferred embodiment of the present utility model, but the present utility model is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present utility model, or equivalent embodiments modified into equivalent changes, still within the spirit covered by the specification and the drawings, shall be within the protection scope of the present utility model.
Claims
1. A cigarette filter rod forming device based on a linear motor, comprising a wire feeding device (2) and a heating and shaping device (3), characterized in that: It also comprises a mandrel (4), wherein the mandrel (4) and the wire feeding device (2) are both fixedly mounted on the frame (1), the mandrel (4) passes through the wire feeding device (2) and is non-contactly connected to the heating and shaping device (3), and a driving device (5) is arranged on the frame (1), and the driving device (5) is connected to the heating and shaping device (3).
2. The cigarette filter rod forming device based on a linear motor according to claim 1, characterized in that: The driving device (5) is a linear motor, which is fixed to the frame (1) by means of bolts, and the mover seat (6) of the linear motor is fixedly connected to the heating and shaping device (3) by means of a connecting plate (7).
3. The cigarette filter rod forming device based on a linear motor according to claim 1, characterized in that: The frame (1) is also provided with a plurality of cooling and shaping devices (8), and the cooling and shaping devices (8), the heating and shaping devices (3), the wire feeding device (2) and the core rod (4) are all coaxially arranged.
4. The cigarette filter rod forming device based on a linear motor according to claim 3, characterized in that: The cooling and shaping device (8) comprises a cooling shell (9), a cooling core mold (10) and a cooling gas connector (11); the cooling core mold (10) is fixedly arranged in the cooling shell (9); a cooling air chamber (12) is formed between the outer wall of the cooling core mold (10) and the inner wall of the cooling shell (9); a cooling channel (13) is formed in the axial direction of the cooling core mold (10); a cooling air hole (14) is arranged on the side wall of the cooling core mold (10); and the cooling air hole (14) connects the cooling air chamber (12) with the cooling channel (13).
5. The cigarette filter rod forming device based on a linear motor according to claim 1, characterized in that: The heating and shaping device (3) comprises a heating shell (15), a heating core mold (16) and a heating gas connector (17); the heating core mold (16) is fixedly arranged in the heating shell (15); a heating air chamber (18) is formed between the outer wall of the heating core mold (16) and the inner wall of the heating shell (15); a heating channel (19) is formed in the axial direction of the heating core mold (16); a heating air hole (20) is arranged on the side wall of the heating core mold (16); the heating air hole (20) connects the heating air chamber (18) with the heating channel (19).
6. The cigarette filter rod forming device based on a linear motor according to claim 1, characterized in that: The core rod (4) comprises a first cylindrical section (21), a truncated cone section (22) and a second cylindrical section (23); one end of the first cylindrical section (21) is fixedly connected to the second cylindrical section (23) via the truncated cone section (22).
7. The cigarette filter rod forming device based on a linear motor according to claim 6, characterized in that: A mandrel fixing assembly is fixedly mounted on the frame (1), the mandrel fixing assembly comprising a fixed base plate (24), a clamping stand (25), a mandrel cantilever rod (26) and a locking end cap (27), the fixed base plate (24) being fixed to the frame (1) by bolts, the clamping stand (25) being fixed to the fixed base plate (24) by bolts, a mounting tube (28) and a clamping block (29) being fixed to the clamping stand (25), and the mandrel cantilever rod (26) being fixed to the frame (1) by bolts. 6) passes through the mounting tube (28) and the clamping block (29), the clamping block (29) is used to clamp the mandrel cantilever rod (26), the other end of the mandrel cantilever rod (26) is fixedly provided with a claw structure (30), the first cylindrical section (21) is plug-connected with the claw structure (30), and the first cylindrical section (21) is fixed to the mandrel cantilever rod (26) through the cooperation of the locking end cap (27) and the claw structure (30).