Extrusion molding and filter stick forming process and equipment

Abstract

The invention provides an extrusion molding and filter stick forming process and equipment, and the forming equipment comprises opening equipment, filter stick forming equipment, an acetate fiber spiral fixing piece arranged between the opening equipment and the filter stick forming equipment, and a hollow wiredrawing filter stick forming device, the acetate fiber spiral firmware and hollow wiredrawing filter stick forming device comprises a rack, an acetate fiber spiral firmware forming unit used for forming an acetate fiber spiral filter stick and a hollow wiredrawing filter stick forming unit used for forming a hollow wiredrawing filter stick. The acetate fiber spiral firmware forming unit and the hollow wiredrawing filter stick forming unit are oppositely arranged on the top of the rack front and back; and the position of the rack in the front-back direction is adjustable, so that any one of the acetate fiber spiral firmware forming unit and the hollow wiredrawing filter stick forming unit is aligned with a production station of the opening equipment and a production station of the filter stick forming equipment. According to the filter stick forming device, different types of filter sticks can be formed, and the universality of the filter stick forming device is effectively improved.

Description

Technical Field

[0001] This invention belongs to the technical field of cigarette equipment, specifically relating to an extrusion molding and filter rod forming process and equipment. Background Technology

[0002] When adding fasteners to transparent cavity composite filter rods, the yield of finished composite filter rods is extremely low due to factors such as low fastener production efficiency, slow fastener material arrangement speed, and easy jamming of the mechanism. Furthermore, existing filter rod forming equipment can only produce one type of fastener base rod, resulting in poor versatility.

[0003] Therefore, how to design an extrusion molding and filter rod forming process and equipment to improve its versatility has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide an extrusion molding and filter rod forming process and equipment to solve the above-mentioned technical problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An extrusion molding and filter rod forming equipment includes an opening device, a filter rod forming device, and a cellulose acetate spiral fastener and a hollow fiber-drawing filter rod forming device disposed between the opening device and the filter rod forming device. The cellulose acetate spiral fastener and hollow fiber-drawing filter rod forming device includes a frame, a cellulose acetate spiral fastener forming unit for forming cellulose acetate spiral filter rods, and a hollow fiber-drawing filter rod forming unit for forming hollow fiber-drawing filter rods. The cellulose acetate spiral fastener forming unit and the hollow fiber-drawing filter rod forming unit are arranged opposite each other on the top of the frame. The position of the frame in the front-to-back direction is adjustable so that any one of the cellulose acetate spiral fastener forming unit and the hollow fiber-drawing filter rod forming unit is aligned with the production station of the opening device and the filter rod forming device.

[0007] Preferably, a high-temperature steam generator and a compressed air supply system are installed inside the frame.

[0008] Preferably, the cellulose acetate spiral fastener forming unit includes a spiral filter rod feeder, a double-chain circular line, and a mold closing station.

[0009] Preferably, a preheating module is provided on the left side of the spiral filter rod feeder. The preheating module has a heating conduit and a steam inlet connected thereto. The heating conduit is coaxially arranged with the spiral filter rod feeding port of the spiral filter rod feeder.

[0010] Preferably, the spiral filter rod feeder is connected to the frame via a spiral filter rod adjusting support.

[0011] Preferably, the spiral filter rod adjusting support makes the position of the spiral filter rod feeder adjustable in the left-right and up-down directions.

[0012] Preferably, the hollow wire drawing filter rod forming unit includes a hollow wire drawing filter rod feeder, a hollow wire drawing filter rod thermoforming module, and a hollow wire drawing filter rod cold forming module arranged sequentially from right to left.

[0013] Preferably, the hollow fiber drawing filter rod feeder is connected to the frame via a hollow fiber drawing filter rod adjusting support.

[0014] A forming process based on the extrusion molding and filter rod forming equipment described above includes the following steps during the forming of cellulose acetate spiral filter rods:

[0015] The position of the frame in the front-to-back direction is adjustable so that the cellulose acetate spiral fastener forming unit is aligned with the production station of the loosening equipment and the filter rod forming equipment;

[0016] After the opening device opens the filament bundle and applies glycerin, the filament bundle is then fed into the spiral filter rod feeder for winding. After being heated and pre-shaped and cured by the heating conduit, it passes through the filament bundle forming module and then enters the mold closing station.

[0017] The fiber bundle is closed by the forming mold, which is driven by a double chain ring line and continuously passes through the mold closing station. After being formed by high temperature steam pressing and cold dry air shaping, it is transferred to the filter rod forming equipment for conveying, cutting to a fixed length and accelerating the smoke separation process.

[0018] Preferably, it also includes the process of forming hollow wire drawing filter rods:

[0019] The position of the frame in the front-to-back direction is adjustable so that the hollow wire drawing filter rod forming unit is aligned with the production station of the opening equipment and the filter rod forming equipment;

[0020] After the opening device opens the filament bundle and applies glycerin, the filament bundle is then fed into the hollow drawing filter rod feeder for gathering. It is then subjected to qualitative solidification by the hollow drawing filter rod thermoforming module and the hollow drawing filter rod cooling module, and then enters the filter rod forming equipment, where it is conveyed by the filter rod, cut to a fixed length, and accelerated for the smoke separation process.

[0021] The beneficial effects of this invention are as follows:

[0022] The extrusion molding and filter rod forming equipment and process of the present invention, when in use, only requires adjusting the position of the frame in the front-to-back direction to align either the cellulose acetate spiral fastener forming unit or the hollow drawn filter rod forming unit with the production station of the loosening equipment and the filter rod forming equipment. This not only enables the forming of cellulose acetate spiral filter rods, but also the forming of hollow drawn filter rods, effectively improving its versatility. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly described below, and the specific embodiments of the present invention will be further described in detail with reference to the drawings, wherein...

[0024] Figure 1 A schematic diagram of the extrusion molding and filter rod forming equipment provided in an embodiment of the present invention;

[0025] Figure 2 This is a top view of the cellulose acetate spiral fastener and hollow fiber drawing filter rod forming device provided in an embodiment of the present invention;

[0026] Figure 3 This is an isometric view of the cellulose acetate spiral fastener and hollow fiber drawing filter rod forming device provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the spiral filter rod feeder provided in an embodiment of the present invention during installation;

[0028] Figure 5 A schematic diagram of the preheating module provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the installation of the double-chain circular line and the mold closing station provided in an embodiment of the present invention.

[0030] Figure 7 A schematic diagram of the air distribution plate provided in an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of the mold closing station provided in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of a double-chain loop provided in an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of a hollow wire drawing filter rod forming unit provided in an embodiment of the present invention.

[0034] Marked in the attached diagram:

[0035] 11. Opening equipment; 21. Acetate fiber spiral fastener and hollow fiber drawing filter rod forming device;

[0036] 22. Acetate fiber spiral fastener forming unit; 221. Spiral filter rod feeder.

[0037] 222. Preheating module; 223. Mold closing station; 224. Double chain circular line;

[0038] 23. Hollow fiber filter rod forming unit; 2211. Spiral filter rod adjusting support.

[0039] 2212. Heating conduit; 2213. Steam inlet.

[0040] 2231. Drive wheel; 2232. Rolling limit block; 2233. Valve train.

[0041] 2234. Driven wheel; 2235. Molding mold; 2236. Servo motor.

[0042] 22331, intake chamber; 22332, hinge pin; 22333, chain link.

[0043] 225. Upper rolling block; 226. Lower rolling block; 227. Adjusting bolt.

[0044] 228. Steam inlet; 229. Cold and dry air inlet; 2291. Side fixing plate;

[0045] 2241. High-temperature steam section; 2242. Cold and dry air section;

[0046] 231. Hollow fiber filter rod feeder; 232. Hollow fiber filter rod thermoforming module.

[0047] 233. Hollow wire drawing filter rod cold mold module; 234. Hollow wire drawing filter rod adjustment support;

[0048] 24. Frame; 25. High-temperature steam generator; 26. Compressed air supply system;

[0049] 31. Filter rod forming equipment. Detailed Implementation

[0050] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0051] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0052] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0053] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0054] like Figures 1 to 10 As shown, this embodiment of the invention provides an extrusion molding and filter rod forming equipment, which includes an opening device 11, a filter rod forming device 31, and a cellulose acetate spiral fastener and hollow fiber-drawing filter rod forming device 21 disposed between the opening device and the filter rod forming device. The cellulose acetate spiral fastener and hollow fiber-drawing filter rod forming device includes a frame 24, a cellulose acetate spiral fastener forming unit 22 for forming cellulose acetate spiral filter rods, and a hollow fiber-drawing filter rod forming unit 23 for forming hollow fiber-drawing filter rods. The cellulose acetate spiral fastener forming unit and the hollow fiber-drawing filter rod forming unit are arranged opposite each other on the top of the frame. The position of the frame in the front-to-back direction is adjustable so that any one of the cellulose acetate spiral fastener forming unit and the hollow fiber-drawing filter rod forming unit is aligned with the production station of the opening device and the filter rod forming device.

[0055] Furthermore, a high-temperature steam generator 25 and a compressed air supply system 26 are provided inside the frame, thereby providing steam and compressed air to the cellulose acetate spiral fastener forming unit and the hollow fiber filter rod forming unit.

[0056] Specifically, the cellulose acetate spiral fastener forming unit includes a spiral filter rod feeder 221, a double-chain circular line 224, and a mold closing station 223. The mold closing station has a filament forming module, and the forming unit has an electrical control system for control.

[0057] Furthermore, a preheating module 222 is provided on the left side of the spiral filter rod feeder. The preheating module has a heating conduit 2212 and a steam inlet 2213 connected to it. The heating conduit is coaxially arranged with the spiral filter rod feeding port of the spiral filter rod feeder, so that the filament bundle can be heated and pre-shaped when passing through the heating conduit.

[0058] Specifically, the spiral filter rod feeder is connected to the frame via the spiral filter rod adjusting support 2211.

[0059] Preferably, the spiral filter rod adjusting support makes the position of the spiral filter rod feeder adjustable in the left-right and up-down directions, thereby facilitating the adjustment of the installation position of the spiral filter rod feeder in the left-right and up-down directions for alignment with the opening equipment.

[0060] Understandably, the loose filaments fed by the opening equipment, when passing through the filament feeder, are guided by compressed air from the outside, causing the loose filaments to form an ordered filament bundle and generating forward momentum. After the cellulose acetate filament bundle enters the heating conduit through the filament feeder, high-temperature steam is introduced into the heating conduit through its steam inlet. The high-temperature steam heats and solidifies the cellulose acetate filament bundle, which then enters the mold closing station. The mold is closed by the forming mold, which is fixed on a double-chain circular line. Driven by the double-chain circular line, the filament bundle continuously passes through the mold closing station. After passing through the air distribution plate set at the mold closing station, the filament bundle undergoes high-temperature steam pressing and cold-dry air shaping before being transferred to the subsequent processes.

[0061] Specifically, the double-chain looper 224 consists of two loops, primarily composed of an air distribution plate 2233, rollers, a drive wheel, a driven wheel, chain plates, and hinge pins. The forming molds are mounted on the outer sides of the loops and fixed to the air distribution plate with fasteners. A servo motor 2236 drives the drive wheel 2231 to rotate, thus causing the loops to circulate. Rolling limit blocks are laid around the two loops to reduce friction, increase operating speed, and extend service life. Each loop is composed of multiple chain links 22333. The air inlet chamber of the air distribution plate is connected to multiple air inlets on the forming mold to achieve heating and cooling of the filament bundle within the mold. The mold-closing station includes components such as a side fixing plate 2291, a positioning guide plate, an upper cover plate, an upper rolling block 225, and adjusting bolts 227. By adjusting the bolts, the gap between the positioning guide plate, the upper rolling block, and the forming mold is adjusted, ensuring that the air distribution plate on the chain loop and the air inlet chamber on the guide plate align within 0.05-0.1mm, guaranteeing accurate positioning and preventing misalignment during operation. The mold-closing station is divided into two areas: the cold dry air section 2242 on the left and the high-temperature steam section 2241 on the right, which can also be referred to as the cold forming module and the hot forming module, respectively. The cold dry air section is the length of four forming molds, and the high-temperature steam section is the length of three forming molds. During operation, the air distribution plate on the chain loop and the air inlet chamber of the guide plate can quickly connect, realizing the heating and cooling functions in the tow forming mold.

[0062] Furthermore, the hollow fiber filter rod forming unit includes a hollow fiber filter rod feeder 231, a hollow fiber filter rod thermoforming module 232, and a hollow fiber filter rod cold forming module 233, arranged sequentially from right to left. Preferably, there is one hollow fiber filter rod thermoforming module, located on the far right; and three hollow fiber filter rod cold forming modules.

[0063] Specifically, the hollow fiber filter rod feeder is connected to the frame via a hollow fiber filter rod adjusting support 234. Preferably, the hollow fiber filter rod adjusting support allows the position of the hollow fiber filter rod feeder to be adjusted in the left-right and up-down directions, thereby facilitating the adjustment of the installation position of the hollow fiber filter rod feeder in the left-right and up-down directions to align it with the opening equipment.

[0064] This invention also provides a forming process based on the extrusion molding and filter rod forming equipment described above, which includes forming a cellulose acetate spiral filter rod:

[0065] The position of the frame in the front-to-back direction is adjustable so that the cellulose acetate spiral fastener forming unit is aligned with the production station of the loosening equipment and the filter rod forming equipment, that is, the center line of the filter rod is on a straight line.

[0066] After the opening device opens the filament bundle and applies glycerin, the filament bundle is then fed into the spiral filter rod feeder for winding. After being heated and pre-shaped and cured by the heating conduit, it passes through the filament bundle forming module and then enters the mold closing station.

[0067] The fiber bundle is closed by the forming mold, which is driven by a double chain ring line and continuously passes through the mold closing station. After being formed by high temperature steam pressing and cold dry air shaping, it is transferred to the filter rod forming equipment for conveying, cutting to a fixed length and accelerating the smoke separation process.

[0068] Furthermore, the forming process also includes the forming of hollow wire drawing filter rods:

[0069] The position of the frame in the front-to-back direction is adjustable so that the hollow wire drawing filter rod forming unit is aligned with the production station of the opening equipment and the filter rod forming equipment, that is, the center line of the filter rod is on a straight line.

[0070] After the opening device opens the filament bundle and applies glycerin, the filament bundle is then fed into the hollow drawing filter rod feeder for gathering. It is then subjected to qualitative solidification by the hollow drawing filter rod thermoforming module and the hollow drawing filter rod cooling module, and then enters the filter rod forming equipment, where it is conveyed by the filter rod, cut to a fixed length, and accelerated for the smoke separation process.

[0071] The extrusion molding and filter rod forming equipment and process provided in this invention embodiment can be aligned with the production station of the opening equipment and filter rod forming equipment by simply adjusting the position of the frame in the front-back direction. This not only enables the forming of cellulose acetate spiral filter rods, but also the forming of hollow drawn filter rods, effectively improving its versatility.

[0072] The components related to the size of the equipment and products in this invention are all modularly designed, which can quickly switch or replace the specifications of the parts to achieve the switching production of products such as fastener base rods, hollow wire drawing base rods, and Collins rods of different sizes and shapes.

[0073] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. An extrusion molding and filter rod forming equipment, characterized in that, It includes an opening device, a filter rod forming device, and a cellulose acetate spiral fastener and a hollow fiber-drawing filter rod forming device disposed between the opening device and the filter rod forming device. The cellulose acetate spiral fastener and hollow fiber-drawing filter rod forming device includes a frame, a cellulose acetate spiral fastener forming unit for forming cellulose acetate spiral filter rods, and a hollow fiber-drawing filter rod forming unit for forming hollow fiber-drawing filter rods. The cellulose acetate spiral fastener forming unit and the hollow fiber-drawing filter rod forming unit are arranged opposite each other on the top of the frame. The position of the frame in the front-to-back direction is adjustable so that either the cellulose acetate spiral fastener forming unit or the hollow fiber-drawing filter rod forming unit is aligned with the production station of the opening device and the filter rod forming device.

2. The extrusion molding and filter rod forming equipment according to claim 1, characterized in that, The frame is equipped with a high-temperature steam generator and a compressed air supply system.

3. The extrusion molding and filter rod forming equipment according to claim 1, characterized in that, The cellulose acetate spiral fastener forming unit includes a spiral filter rod feeder, a double-chain circular line, and a mold closing station.

4. The extrusion molding and filter rod forming equipment according to claim 3, characterized in that, A preheating module is provided on the left side of the spiral filter rod feeder. The preheating module has a heating conduit and a steam inlet connected to it. The heating conduit is coaxially arranged with the spiral filter rod feeding port of the spiral filter rod feeder.

5. The extrusion molding and filter rod forming equipment according to claim 4, characterized in that, The spiral filter rod feeder is connected to the frame via a spiral filter rod adjusting support.

6. The extrusion molding and filter rod forming equipment according to claim 5, characterized in that, The spiral filter rod adjustment support allows the spiral filter rod feeder to be adjusted in both the left-right and up-down directions.

7. The extrusion molding and filter rod forming equipment according to claim 1, characterized in that, The hollow wire drawing filter rod forming unit includes, from right to left, a hollow wire drawing filter rod feeder, a hollow wire drawing filter rod thermoforming module, and a hollow wire drawing filter rod cold forming module.

8. The extrusion molding and filter rod forming equipment according to claim 7, characterized in that, The hollow fiber drawing filter rod feeder is connected to the frame via a hollow fiber drawing filter rod adjusting support.

9. A forming process based on the extrusion molding and filter rod forming equipment according to claim 1, characterized in that, This includes the molding of cellulose acetate spiral filter rods: The position of the frame in the front-to-back direction is adjustable so that the cellulose acetate spiral fastener forming unit is aligned with the production station of the loosening equipment and the filter rod forming equipment; After the opening device opens the filament bundle and applies glycerin, the filament bundle is then fed into the spiral filter rod feeder for winding. After being heated and pre-shaped and cured by the heating conduit, it passes through the filament bundle forming module and then enters the mold closing station. The fiber bundle is closed by the forming mold, which is driven by a double chain ring line and continuously passes through the mold closing station. After being formed by high temperature steam pressing and cold dry air shaping, it is transferred to the filter rod forming equipment for conveying, cutting to a fixed length and accelerating the smoke separation process.

10. The forming process according to claim 9, characterized in that, It also includes the process of forming hollow wire drawing filter rods: The position of the frame in the front-to-back direction is adjustable so that the hollow wire drawing filter rod forming unit is aligned with the production station of the opening equipment and the filter rod forming equipment; After the opening device opens the filament bundle and applies glycerin, the filament bundle is then fed into the hollow drawing filter rod feeder for gathering. It is then subjected to qualitative solidification by the hollow drawing filter rod thermoforming module and the hollow drawing filter rod cooling module, and then enters the filter rod forming equipment, where it is conveyed by the filter rod, cut to a fixed length, and accelerated for the smoke separation process.

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