A machine for processing a cigarette filter rod

Abstract

This utility model belongs to the field of cigarette filter rod production technology, and discloses an opening machine for processing cigarette filter rods. The opening machine includes: a machine body and a primary air pressure opening plate, a secondary air pressure opening plate, a pretension roller, an input roller, an extension roller, a tertiary air pressure opening plate, a plasticizer chamber, a conveying roller, and a bundling roller arranged sequentially along the direction of the filament bundle movement. A filament bundle tensioning device is also provided between the primary and secondary air pressure opening plates. The filament bundle tensioning device includes a bracket and at least two tensioning shafts, both of which are mounted on the bracket. The filament bundle can be wound around the tensioning shafts, and the position of at least one tensioning shaft on the bracket is adjustable. By setting up the filament bundle tensioning device, the operating filament bundle can be effectively stabilized, ensuring that the filament bundle can be fully opened, thereby stabilizing the suction resistance value of the filter rod. Furthermore, by appropriately adjusting the tension state of the filament bundle, the phenomenon of filter rods easily shrinking before and after filament replacement during the production process can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of cigarette filter rod production technology, and in particular to an opening machine for processing cigarette filter rods. Background Technology

[0002] The raw material for producing cigarette filter rods is cellulose acetate bundles, or simply tow. As raw material, the tow is usually supplied in bundles, so it needs to be loosened before the filter rods are formed.

[0003] like Figure 1 As shown, an existing opening machine for processing cigarette filter rods includes: a primary air pressure opening plate 1', a secondary air pressure opening plate 2', a pretension roller 3', an input roller 4', an extension roller 5', a tertiary air pressure opening plate 6', a plasticizer chamber 7', a conveying roller 8', and a bundling roller 9' arranged sequentially along the moving direction of the filament bundle 10'. Specifically, the working process of this opening machine is as follows: the filament bundle 10' is tensioned by the pretension roller 3', input roller 4', extension roller 5', and conveying roller 8' with different rotation speeds; the length is stretched and the width is extended by the opening method of blowing through the primary air pressure opening plate 1', the secondary air pressure opening plate 2', and the tertiary air pressure opening plate 6' with the same air pressure; then, a plasticizer that has been heated and atomized under high pressure is applied through the plasticizer chamber 7'; finally, after being collected by the bundling roller 9', it is conveyed to the forming machine to be rolled into a cigarette filter rod.

[0004] Before the fiber bundle 10' enters the plasticizer chamber 7', it needs to be fully opened to ensure that glycerin is evenly sprayed onto its surface. If the fiber bundle 10' is not fully opened before entering the plasticizer chamber 7', uneven spraying of glycerin will lead to unstable suction resistance and uneven quality of the filter rod. To address this issue, operators typically increase the amount of fiber bundle 10' to resolve the problem of large fluctuations in the filter rod's suction resistance.

[0005] However, in actual operation, it was found that due to the excessively long suspension distance between the primary air pressure opening plate 1' and the secondary air pressure opening plate 2' in the existing opening machine, the filament bundle 10' lacks force support during transmission and has a certain degree of looseness, resulting in a large longitudinal rebound force and large swing amplitude. This leads to uneven opening and spreading when the filament bundle 10' reaches the plasticizer chamber 7'. Furthermore, when the filling amount is increased, the filament bundle 10' will also be lifted by the conveying roller 8', further increasing the swing amplitude of the filament bundle 10' and causing the filter rod to shrink.

[0006] In addition, the yarn needs to be changed multiple times a day (4-6 times) during production. Due to the quality differences between different yarn bundles, there are large differences in the 10' filling and swing amplitude of the yarn bundle before and after yarn change, which further increases the probability of quality problems such as shrinkage.

[0007] Therefore, there is an urgent need to design an opening machine that can solve the above-mentioned technical problems. Utility Model Content

[0008] The purpose of this invention is to provide an opening machine for processing cigarette filter rods. This opening machine can reduce the sway during the movement of the filament bundle, so that the filament bundle can be fully opened and spread evenly.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] A loosening machine for processing cigarette filter rods includes: a machine body and, arranged sequentially along the direction of fiber bundle movement, a primary air pressure loosening plate, a secondary air pressure loosening plate, a pretension roller, an input roller, an extension roller, a tertiary air pressure loosening plate, a plasticizer chamber, a conveying roller, and a bundling roller, characterized in that:

[0011] A wire bundle tensioning device is also provided between the primary air pressure opening plate and the secondary air pressure opening plate;

[0012] The filament tensioning device includes a bracket and at least two tensioning shafts, both of which are mounted on the bracket. The filament can be wound around the tensioning shafts, and the position of at least one tensioning shaft on the bracket is adjustable.

[0013] Optionally, three tensioning shafts are provided, the axes of the three tensioning shafts are parallel, and the projections of the three tensioning shafts on the bracket are arranged in a triangular pattern.

[0014] Optionally, the bracket includes a support member and a connector, the support member and the connector are fixedly connected, the tensioning shaft is mounted on the support member, and the connector can be fixed to the machine body.

[0015] Optionally, the support member has an elongated hole, and a slidable first screw is disposed in the elongated hole, and the tensioning shaft can be fixedly connected to the first screw.

[0016] Optionally, the support member includes a protrusion, and the elongated hole portion is formed on the protrusion.

[0017] Optionally, the support member is further provided with scale lines along the length direction of the elongated hole.

[0018] Optionally, a washer is also provided between the head of the first screw and the support member.

[0019] Optionally, the head of the first screw is provided with a knob, which is fixedly connected to the head of the first screw.

[0020] Optionally, the connector includes a transverse connecting plate, and / or the connector includes a longitudinal connecting plate.

[0021] Optionally, a positioning pin is also provided between the connector and the support.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides an opening machine for processing cigarette filter rods. By setting a tow tensioning device between the primary and secondary air pressure opening plates, it can effectively stabilize the tow during operation, reduce the sway of the tow before entering the plasticizer chamber, and ensure that the tow is fully opened and evenly spread, thus ensuring that glycerin is evenly sprayed onto the tow and stabilizing the suction resistance value of the filter rod. Furthermore, by setting the position of the tensioning shaft in the tow tensioning device to be adjustable, the tension of the tow can be appropriately changed by adjusting the distance between the tensioning shafts for tows of different qualities after tow replacement, thereby effectively improving the phenomenon of filter rods easily shrinking before and after tow replacement during the production process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an existing opening machine for processing cigarette filter rods, as mentioned in the background section.

[0025] Figure 2 This is a schematic diagram of an opening machine for processing cigarette filter rods provided in an embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the filament tensioning device provided in this embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the wire bundle tensioning device provided in this embodiment of the present invention installed on the machine body;

[0028] Figure 5 This is a partial sectional view of the support member provided in an embodiment of this utility model;

[0029] Figure 6 This is a top view of the transverse connecting plate provided in this embodiment of the utility model;

[0030] Figure 7 This is a structural schematic diagram of the support member provided in an embodiment of the present utility model;

[0031] Figure 8 This is a structural schematic diagram of the first screw and knob provided in this embodiment of the utility model;

[0032] Figure 9 This is a partial cross-sectional view of the tensioning shaft provided in an embodiment of this utility model.

[0033] In the picture:

[0034] 1' Primary air pressure opening plate; 2' Secondary air pressure opening plate; 3' Pre-tension roller; 4' Input roller; 5' Extension roller; 6' Tertiary air pressure opening plate; 7' Plasticizer chamber; 8' Conveyor roller; 9' Bundling roller; 10' Filament bundle;

[0035] 1. First-level air pressure opening plate;

[0036] 2. Wire bundle tensioning device; 21. Bracket; 22. Tensioning shaft; 221. First connecting hole; 23. First screw; 24. Washer; 25. Knob; 26. Positioning pin;

[0037] 211. Support component; 2111. Elongated hole; 2112. Protrusion; 2113. Scale line; 2114. First positioning hole;

[0038] 212. Connector; 2121. Transverse connecting plate; 21211. Second positioning hole; 2122. Longitudinal connecting plate;

[0039] 3. Secondary pneumatic opening plate; 4. Pretension roller; 5. Input roller; 6. Extension roller; 7. Tertiary pneumatic opening plate; 8. Plasticizer chamber; 9. Conveyor roller; 10. Bundling roller; 11. Fiber bundle; 12. Machine body. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] like Figures 2 to 3 As shown, this embodiment provides a cigarette filter rod opening machine. The opening machine includes a machine body 12 and, arranged sequentially along the moving direction of the filament bundle 11, a primary air pressure opening plate 1, a secondary air pressure opening plate 3, a pretension roller 4, an input roller 5, an extension roller 6, a tertiary air pressure opening plate 7, a plasticizer chamber 8, a conveying roller 9, and a bundling roller 10. A filament bundle tensioning device 2 is further provided between the primary air pressure opening plate 1 and the secondary air pressure opening plate 3. The filament bundle tensioning device 2 includes a bracket 21 and at least two tensioning shafts 22, both mounted on the bracket 21. The filament bundle 11 can be wound around the tensioning shafts 22, and the position of at least one tensioning shaft 22 on the bracket 21 is adjustable.

[0045] By installing a fiber bundle tensioning device 2 between the primary air pressure opening plate 1 and the secondary air pressure opening plate 3, the fiber bundle tensioning device 2 can tension the fiber bundle 11 between the primary air pressure opening plate 1 and the secondary air pressure opening plate 3, thereby effectively stabilizing the operating fiber bundle 11, reducing the sway of the fiber bundle 11 before entering the plasticizer chamber 8, and ensuring that the fiber bundle 11 is fully opened and evenly spread before entering the plasticizer chamber 8. After entering the plasticizer chamber 8, glycerin can be evenly sprayed onto the fiber bundle 11, thereby stabilizing the suction resistance value of the filter rod. Furthermore, by installing at least two tensioning shafts 22 to tension the fiber bundle 11, the tensioning effect of the fiber bundle 11 can be guaranteed. At the same time, the position of at least one tensioning shaft 22 on the support 21 is adjustable. Therefore, for fiber bundles 11 of different qualities after fiber replacement, the tension state of the fiber bundle 11 can be appropriately adjusted by adjusting the distance between the tensioning shafts 22, thereby effectively improving the phenomenon of filter rods easily shrinking before and after fiber replacement during production.

[0046] Optionally, such as Figure 3 As shown, in this embodiment, the support 21 is provided with three tensioning shafts 22. The axes of the three tensioning shafts 22 are parallel, and their projections on the support 21 form a triangular arrangement. By arranging the three tensioning shafts 22 in a triangular pattern, the filament bundle 11 needs to make three turns when passing through the three tensioning shafts 22, forming a zigzag path. Throughout the process, each segment of the filament bundle 11 remains stretched due to the path turns, which enhances the tensioning effect on the filament bundle 11. It is understood that in some other embodiments, the number of tensioning shafts 22 and the arrangement of the tensioning shafts 22 on the support 21 can be set according to actual needs and are not limited here.

[0047] Optionally, such as Figure 3 As shown, in this embodiment, the bracket 21 includes a support member 211 and a connector 212. The support member 211 and the connector 212 are fixedly connected. The tensioning shaft 22 is mounted on the support member 211, and the connector 212 can be fixed to the body 12. By using the support member 211 and the connector 212 to form the bracket 21, the overall production difficulty of the bracket 21 can be reduced because the support member 211 and the connector 212 are relatively easy to manufacture. It is understood that in some other embodiments, the bracket 21 can also be a one-piece molded structure. The one-piece molded bracket 21 has higher overall structural strength, but it is more difficult to manufacture.

[0048] Optionally, such as Figure 3 As shown, in this embodiment, the connector 212 includes a horizontal connecting plate 2121 and a vertical connecting plate 2122. The horizontal connecting plate 2121 is perpendicularly connected to the support member 211 in the horizontal direction, and the vertical connecting plate 2122 is perpendicularly connected to the support member 211 in the vertical direction, and the connection points are all T-shaped. Further, as... Figure 4As shown, the transverse connecting plate 2121 is fixedly connected to the top wall of the machine body 12, and the longitudinal connecting plate 2122 is fixedly connected to the side wall of the machine body 12. By setting the transverse connecting plate 2121 and the longitudinal connecting plate 2122 to be connected to the machine body 12 respectively, the stability of the wire bundle tensioning device 2 on the machine body 12 can be enhanced. It is understood that in some other embodiments, only the transverse connecting plate 2121 or the longitudinal connecting plate 2122 may be provided. It is also understood that in some other embodiments, the connecting member 212 is not limited to a plate structure, as long as it can enable the wire bundle tensioning device 2 to be installed on the machine body 12.

[0049] Optionally, in this embodiment, the tensioning shaft 22 is fixedly connected to the support member 211, the support member 211 is fixedly connected to the connector 212, and the connector 212 is fixedly connected to the body 12 by screws. It is understood that in some other embodiments, the tensioning shaft 22 is fixedly connected to the support member 211, the support member 211 is fixedly connected to the connector 212, and the connector 212 is fixedly connected to the body 12 by other methods, such as adhesive bonding, and this is not limited here.

[0050] Furthermore, such as Figure 3 As shown, a locating pin 26 is also provided between the connector 212 and the support 211. Specifically, as... Figure 5 and Figure 6 As shown, in this embodiment, the support member 211 has a first positioning hole 2114, and the transverse connecting plate 2121 has a second positioning hole 21211. The positioning pin 26 is disposed in the first positioning hole 2114 and the second positioning hole 21211. By providing the positioning pin 26, it is convenient to position the connector 212 and the support member 211 during assembly, thereby improving assembly efficiency.

[0051] Optionally, such as Figure 3 and Figure 7 As shown, in this embodiment, the support member 211 has an elongated hole 2111, and a slidable first screw 23 is disposed in the elongated hole 2111. The tensioning shaft 22 can be fixedly connected to the first screw 23. Specifically, the head of the first screw 23 is limited to the side of the support member 211 away from the tensioning shaft 22, and the screw shank of the first screw 23 can pass through the elongated hole 2111, such as... Figure 9 As shown, a first connecting hole 221 is provided at one end of the tensioning shaft 22, and the screw of the first screw 23 can be screwed into the first connecting hole 221. When the first screw 23 is tightened, the tensioning shaft 22 can be fixed on the support member 211.

[0052] When adjusting the position of the tensioning shaft 22, first loosen the first screw 23 so that it can move along the elongated hole 2111. After the first screw 23 and the tensioning shaft 22 have moved to the target position, tighten the first screw 23 to fix the tensioning shaft 22 at the target position. This adjustment method is simple to operate and makes it easy for operators to adjust the position of the tensioning shaft 22.

[0053] It is understood that in some other embodiments, other structures can be used to make the position of the tensioning shaft 22 on the support 211 adjustable. For example, the tensioning shaft 22 can be set to slide on the support 211. After reaching the target position, the tensioning shaft 22 can be fixed by a rotation locking mechanism. No limitation is made here.

[0054] Furthermore, such as Figure 8 As shown, the head of the first screw 23 is also provided with a knob 25, which is fixedly connected to the head of the first screw 23. By providing the knob 25, when the operator adjusts the position of the tension shaft 22, the first screw 23 and the tension shaft 22 can be loosened or tightened by directly turning the knob 25, without the need for other tightening tools, thus further facilitating the operator to adjust the position of the tension shaft 22.

[0055] Furthermore, such as Figure 3 As shown, a washer 24 is also provided between the head of the first screw 23 and the support member 211. By providing the washer 24, the stability of the connection between the first screw 23 and the support member 211 can be increased, preventing the first screw 23 from loosening due to vibration or other external forces.

[0056] Optionally, such as Figure 7 As shown, in this embodiment, the support member 211 has two elongated holes 2111, which allows the positions of the two tensioning shafts 22 on the support member 211 to be adjustable. This increases the adjustment range of the distance between the tensioning shafts 22, and thus allows for better adjustment of the tension of the yarn bundle 11 when changing yarns of different qualities. It is understood that in some other embodiments, the number of elongated holes 2111 can be set according to actual needs, and is not limited here.

[0057] Furthermore, such as Figure 7 As shown, in this embodiment, the support member 211 includes a protrusion 2112, and an elongated hole 2111 is partially formed on the protrusion 2112. Specifically, the protrusion 2112 is an elongated structure formed by extending the sidewall of the support member 211 outward. By providing the protrusion 2112, the support member 211 does not need to be designed to be very large in order to open the elongated hole 2111, thus reducing the overall volume of the support member 211 and reducing production costs.

[0058] Furthermore, such as Figure 4As shown, along the length of the elongated hole 2111, the support member 211 is also provided with a scale line 2113. Specifically, in this embodiment, the scale line 2113 is provided on the protrusion 2112. By setting the scale line 2113, the position of the tensioning shaft 22 can be adjusted more accurately, and the specific position information can also be recorded. When tensioning a bundle of filaments 11 of the same mass, the position of the tensioning shaft 22 can be quickly adjusted according to the recorded position information, further facilitating the operator to adjust the position of the tensioning shaft 22.

[0059] This embodiment provides an opening machine for processing cigarette filter rods, the operation process of which is as follows:

[0060] The filament bundle 11 is tensioned by pre-tension rollers 4, input rollers 5, extension rollers 6 and conveying rollers 9 with different rotation speeds. It is then stretched in length and width by blowing air through first-stage air pressure opening plates 1, second-stage air pressure opening plates 3 and third-stage air pressure opening plates 7 with the same air pressure. Between the first-stage air pressure opening plates 1 and the second-stage air pressure opening plates 3, the filament bundle 11 is also tensioned by the filament bundle tensioning device 2 to ensure that the filament bundle 11 can be fully opened and spread evenly. Then, it passes through the plasticizer chamber 8 to apply a heated and high-pressure atomized plasticizer. Finally, it is collected by the bundling roller 10 and conveyed to the forming machine to be rolled into a cigarette filter rod.

[0061] This embodiment provides an opening machine for processing cigarette filter rods. By setting a tow tensioning device 2 between the primary air pressure opening plate 1 and the secondary air pressure opening plate 3, the machine can effectively stabilize the operating tow 11, reduce the sway of the tow 11 before entering the plasticizer chamber 8, and ensure that the tow 11 is fully opened and evenly spread, allowing glycerin to be evenly sprayed onto the tow 11, thereby stabilizing the suction resistance value of the filter rod. Furthermore, by setting the position of the tensioning shaft 22 in the tow tensioning device 2 to be adjustable, the tension of the tow 11 can be appropriately changed by adjusting the distance between the tensioning shafts 22 for tows 11 of different qualities after tow replacement, thus effectively improving the phenomenon of filter rods easily shrinking before and after tow replacement during the production process. At the same time, the tow tensioning device 2 is easy to modify and install, and can be promoted for use in similar forming equipment in the industry.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A loosening machine for processing cigarette filter rods, comprising: The machine body (12) and the first-stage pneumatic opening plate (1), the second-stage pneumatic opening plate (3), the pretension roller (4), the input roller (5), the extension roller (6), the third-stage pneumatic opening plate (7), the plasticizer chamber (8), the conveying roller (9), and the bundling roller (10) arranged sequentially along the moving direction of the filament bundle (11) are characterized in that: A wire bundle tensioning device (2) is also provided between the primary air pressure opening plate (1) and the secondary air pressure opening plate (3); The filament tensioning device (2) includes a bracket (21) and at least two tensioning shafts (22), both of which are mounted on the bracket (21). The filament (11) can be wound around the tensioning shafts (22), and the position of at least one tensioning shaft (22) on the bracket (21) is adjustable.

2. The opening machine for processing cigarette filter rods according to claim 1, characterized in that, There are three tensioning shafts (22), the axes of the three tensioning shafts (22) are parallel, and the projections of the three tensioning shafts (22) on the bracket (21) are arranged in a triangular pattern.

3. The opening machine for processing cigarette filter rods according to claim 2, characterized in that, The bracket (21) includes a support member (211) and a connector (212). The support member (211) is fixedly connected to the connector (212). The tensioning shaft (22) is mounted on the support member (211). The connector (212) can be fixed on the body (12).

4. The opening machine for processing cigarette filter rods according to claim 3, characterized in that, The support member (211) has an elongated hole (2111) and a slidable first screw (23) is provided in the elongated hole (2111). The tensioning shaft (22) can be fixedly connected to the first screw (23).

5. The opening machine for processing cigarette filter rods according to claim 4, characterized in that, The support member (211) includes a protrusion (2112), and the elongated hole (2111) is partially formed on the protrusion (2112).

6. The opening machine for processing cigarette filter rods according to claim 4, characterized in that, Along the length of the elongated hole (2111), the support member (211) is also provided with scale lines (2113).

7. The opening machine for processing cigarette filter rods according to claim 4, characterized in that, A washer (24) is also provided between the head of the first screw (23) and the support member (211).

8. The opening machine for processing cigarette filter rods according to claim 4, characterized in that, The head of the first screw (23) is provided with a knob (25), which is fixedly connected to the head of the first screw (23).

9. The opening machine for processing cigarette filter rods according to claim 3, characterized in that, The connector (212) includes a transverse connecting plate (2121), and / or the connector (212) includes a longitudinal connecting plate (2122).

10. The opening machine for processing cigarette filter rods according to claim 3, characterized in that, A positioning pin (26) is also provided between the connector (212) and the support (211).

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