Tow circular ring device and filter stick forming equipment

Abstract

The utility model relates to the field of filter stick forming, in particular to a tow circular ring device and filter stick forming equipment, in the tow circular ring device, a tow circular ring comprises a circular ring and a connecting rod, the connecting rod is perpendicular to the radial direction of the circular ring, one end of the connecting rod is connected with the circular ring, and the other end of the connecting rod is connected with the output end of a rotary driving unit; the rotary driving unit can drive the circular ring to rotate around the horizontal axis by taking the connecting rod as the radius, so that the circular ring applies external force to the tow penetrating through the circular ring, and the section of tow is pre-stretched; the fixed end of the rotary driving unit is connected with the fixed end of the lifting assembly, the lifting assembly can drive the rotary driving unit to ascend and descend so as to adjust the position of the tow ring in the vertical direction, and the situation that the distance between the tow bag and the ring device is increased due to the fact that the height of the top of the tow bag is reduced is avoided; and therefore, the stability of the circumferential pressure drop of the filter stick is ensured.

Description

Technical Field

[0001] The utility model relates to the field of filter rod forming, in particular to a tow ring device and filter rod forming equipment. Background Art

[0002] In cigarette production, the loosened tow is generally made into filter rods that meet the process quality requirements through a filter rod forming machine. The tow is one of the main forming materials for producing filter rods.

[0003] In the prior art, the tow is drawn out from the tow bag, passes through the ring device of the filter rod forming machine, and then passes through the air opening device. Finally, the plasticizer is sprayed on the evenly opened tow belt and transported to the forming gun to make the filter rod. Since the position of the ring device is fixed, the ring device only limits the tow, and the tow entering the air opening device is not pre-expanded, which affects the subsequent tow stretching and opening effect, and increases the instability of the circumferential pressure drop of the filter rod.

[0004] In addition, the height of the top of the tow package will gradually decrease during continuous use, and the distance between the tow package and the circular ring device will continue to increase. The swing amplitude of the tow will continue to change. The change in the swing amplitude causes the tension on the tow to fluctuate, which will also increase the instability of the circumferential pressure drop of the filter rod, resulting in quality problems in the produced filter rods. Utility Model Content

[0005] One purpose of the utility model is to provide a tow ring device and a filter rod forming device, which can adjust the position of the tow ring and stabilize the circumferential pressure drop of the filter rod.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A tow ring device, comprising:

[0008] A tow ring, comprising a connecting rod and a ring, wherein the connecting rod is perpendicular to the radial direction of the ring, one end of the connecting rod is connected to the ring, and the ring is used to pass the tow;

[0009] A rotation drive unit, wherein the output end of the rotation drive unit is connected to the other end of the connecting rod, and the rotation drive unit is used to drive the tow circle to rotate around a horizontal axis;

[0010] A lifting assembly, wherein the fixed end of the rotary drive unit is connected to the lifting assembly, and the lifting assembly is used to drive the rotary drive unit to lift.

[0011] Preferably, a bottom plate is also included, and the lifting assembly includes:

[0012] A mounting seat, wherein the mounting seat and the bottom plate are slidably matched in a vertical direction, and a fixed end of the rotation drive unit is mounted on the mounting seat;

[0013] A lifting drive unit, wherein the lifting drive unit is used to drive the mounting seat to lift.

[0014] Preferably, one of the base plate and the mounting seat is provided with a slide rail, and the other is provided with a slide groove, and the slide rail and the slide groove are slidably matched in a vertical direction.

[0015] Preferably, the filament bundle ring and the bottom plate are spaced apart from each other along the extension direction of the horizontal axis.

[0016] Preferably, the bottom plate is provided with a fixed rack extending in the vertical direction;

[0017] The lifting drive unit includes a lifting motor and a moving gear. The lifting motor is fixed on the mounting seat. The output end of the lifting motor is connected to the moving gear to drive the moving gear to rotate. The moving gear is meshed with the fixed rack.

[0018] Preferably, the mounting seat comprises a first panel that is slidably matched with the base plate in a vertical direction;

[0019] The moving gear is located between the first panel and the bottom plate, the lifting motor is fixedly installed on the first panel, and the moving gear and the lifting motor are located on opposite sides of the first panel;

[0020] The output end of the lifting motor passes through the first panel and is connected to the moving gear. The output end of the lifting motor is rotatably connected to the first panel.

[0021] Preferably, the tow ring device further comprises a fixing seat for connecting the tow boom, wherein the fixing seat is mounted on the base plate via a universal joint, and the universal joint is used to ensure that the base plate is always arranged in a vertical direction.

[0022] Preferably, the fixing seat comprises a clamping member and a mounting plate, the clamping member and the universal joint are both fixedly mounted on the mounting plate, and the clamping member is used to connect the tow boom.

[0023] As a preference, it also includes:

[0024] A position detection unit is used to detect the height of the tow package formed by winding the tow.

[0025] Another object of the utility model is to provide a filter rod forming device, which can adjust the position of the filament ring and stabilize the circumferential pressure drop of the filter rod.

[0026] To achieve this purpose, the utility model adopts the following technical solutions:

[0027] A filter rod forming device, comprising an air opener and a forming gun, and also comprising the tow ring device, wherein the tow passes through the tow ring device, the air opener and the forming gun in sequence;

[0028] The air opener is used to stretch the length and width of the filament bundle;

[0029] The forming cigarette gun is used to make the filament bundle into a filter rod.

[0030] Beneficial effects:

[0031] The utility model proposes a wire bundle ring device and filter rod forming equipment, in which the wire bundle ring device comprises a ring and a connecting rod, the connecting rod is perpendicular to the radial direction of the ring, one end of the connecting rod is connected to the ring, and the other end of the connecting rod is connected to the output end of a rotation driving unit, so that the rotation driving unit can drive the ring to rotate around a horizontal axis with the connecting rod as a radius, so that the ring exerts an external force on the wire bundle passing through it, and pre-stretches the section of the wire bundle; by connecting the fixed end of the rotation driving unit with the fixed end of the lifting component, the lifting component can drive the rotation driving unit to rise and fall to adjust the position of the wire bundle ring in the vertical direction, so as to avoid the situation where the distance between the wire bundle and the ring device becomes larger due to the height reduction of the top of the wire bundle package, thereby affecting the swing amplitude of the wire bundle and causing the tension fluctuation of the wire bundle, thereby ensuring the stability of the circumferential pressure drop of the filter rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a partial structural schematic diagram of the filter rod forming device provided by an embodiment of the utility model;

[0033] Figure 2 It is a schematic structural diagram of a tow ring device provided in an embodiment of the utility model;

[0034] Figure 3 It is a top view of the structure of the lifting assembly of the tow ring device provided by the embodiment of the utility model;

[0035] Figure 4 It is a top view of the structure of the tow ring device provided by the embodiment of the utility model;

[0036] Figure 5 It is a schematic structural diagram of the dustproof shell of the tow ring device provided in an embodiment of the utility model.

[0037] in:

[0038] 1. Bottom plate; 11. Slide rail; 12. Fixed rack; 2. Lifting assembly; 21. Mounting seat; 211. Slide groove; 212. First panel; 213. Second panel; 22. Lifting drive unit; 221. Moving gear; 222. Lifting motor; 3. Rotation drive unit; 4. Wire bundle ring; 41. Ring; 42. Connecting rod; 5. Fixed seat; 51. Clamp; 52. Mounting plate; 6. Universal joint; 7. Position detection unit; 8. Dustproof housing; 9. Touch screen; 100. Air opener; 200. Wire bundle boom; 300. Wire bundle package; 301. Suspension segment wire bundle; 302. Pre-expansion segment wire bundle. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0041] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] The present embodiment provides a filament ring device and a filter rod forming device. The filter rod forming device includes an air opener 100, a forming cigarette gun and the above-mentioned filament ring device. The filament first passes through the filament ring device and enters the air opener 100. The air opener 100 can stretch the length and width of the filament. Then, a plasticizer is sprayed on the evenly opened filament. The filament is transported to the forming cigarette gun, wrapped with forming paper, and formed, glued and cut according to the process requirements. Finally, a filter rod that meets the process requirements is formed.

[0044] Please refer to Figure 1-5 The filament ring device provided in this embodiment includes a filament ring 4, a rotation drive unit 3 and a lifting assembly 2. The filament ring 4 includes a ring 41 and a connecting rod 42. The ring 41 is used to pass the filaments. The axial direction of the connecting rod 42 is perpendicular to the radial direction of the ring 41. One end of the connecting rod 42 is connected to the ring 41, and the other end of the connecting rod 42 is connected to the output end of the rotation drive unit 3, so that the rotation drive unit 3 can drive the filament ring 4 to rotate around the horizontal axis. The fixed end of the rotation drive unit 3 is connected to the lifting assembly 2, and the lifting assembly 2 can drive the rotation drive unit 3 to rise and fall to adjust the position of the filament ring 4 in the vertical direction.

[0045] The tow ring 4 limits the tow passing through it, and the tow enters the air opener 100 after passing through the tow ring 4. For ease of description, the tow between the tow ring 4 and the air opener 100 is recorded as the pre-expansion segment tow 302, and the tow between the tow package 300 and the tow ring 4 is recorded as the hanging segment tow 301.

[0046] The rotary drive unit 3 causes the ring 41 to rotate around the horizontal axis with the connecting rod 42 as the radius to change the angle between the filament ring 4 and the vertical direction, so that the ring 41 applies an external force to the filament bundle passing through it, and the applied external force can be decomposed into a horizontal force and a vertical force, wherein the horizontal force can make the pre-expansion segment filament bundle 302 form an angle of 60° with the vertical direction. In actual production, the pre-expansion effect produced by the 60° angle is optimal, and the vertical force can balance a part of the dead weight of the hanging segment filament bundle 301, thereby alleviating the influence of the hanging segment filament bundle 301 on the stability of the circumferential pressure drop of the filter rod.

[0047] During the filter rod forming process, the tow is continuously consumed, and the height of the top of the tow package 300 is continuously reduced, so that the distance between the tow package 300 and the ring 41 becomes larger, which affects the swing amplitude of the suspension segment tow 301, resulting in the tension fluctuation of the pre-expansion segment tow 302. In this embodiment, the lifting assembly 2 drives the rotary drive unit 3 to rise and fall in the vertical direction to change the position of the tow ring 4 in the vertical direction, so that the length of the suspension segment tow 301 remains unchanged as much as possible, so as to ensure the stability of the circumferential pressure drop of the filter rod.

[0048] For further information, please refer to Figure 1 The tow ring device also includes a position detection unit 7, which is used to detect the height of the tow package 300 formed by winding the tow along the vertical direction. The rotation drive unit 3 and the lifting assembly 2 can work according to the detection result of the position detection unit 7.

[0049] For example, please refer to Figure 1 According to the height of the tow package 300 in the vertical direction, three position detection units 7 are provided, and the three position detection units 7 are arranged on the mounting frame of the filter rod forming device at intervals in the vertical direction. It should be noted that the position detection units 7 are not limited to three, but can also be two, four, five, or more.

[0050] When the top surface of the tow package 300 passes through the position detection unit 7 at the uppermost end in the vertical direction, the position detection unit 7 sends a signal to the controller, so that the lifting assembly 2 drives the tow ring 4 to descend the first preset distance and then stop descending. Due to the descent of the tow ring 4, the angle between the pre-expansion segment tow 302 and the vertical direction decreases; after the tow ring 4 stops descending, the rotary drive unit 3 drives the tow ring 4 to rotate a certain angle around the horizontal axis, changes the position of the tow ring 4, and restores the angle between the pre-expansion segment tow 302 and the vertical direction to 60°; thereafter, the tow ring 4 is controlled to descend the second preset distance to balance the displacement caused by the rotary drive unit 3 driving the tow ring 4 to rotate around the horizontal axis.

[0051] When the top surface of the tow package 300 passes through the second position detection unit 7, the above adjustment steps are repeated. When the top surface of the tow package 300 passes through the lowest position detection unit 7, after repeating the above adjustment steps, the lifting assembly 2 and the rotation drive unit 3 no longer adjust the position of the tow ring 4 until the tow in the tow package 300 is completely consumed. Specifically, the position detection unit 7 can be a detector commonly used in the prior art, such as a photoelectric detector or an infrared detector, which are not listed here one by one.

[0052] In other embodiments, the position detection unit 7 can also be fixed in the vertical direction at a designated position directly above the filament bundle 300, and the height difference between the designated position and the top surface of the filament bundle 300 can be detected in real time by the position detection unit 7. Whenever the height difference decreases by a first preset distance, the above adjustment steps are repeated.

[0053] Furthermore, the tow ring device also includes a touch screen 9, on which two buttons "up" and "down" are provided to control the rise and fall of the tow ring 4, and two buttons "forward" and "reverse" are provided to control the rotation of the tow ring 4 around the horizontal axis. Specifically, the touch screen 9 can be set on the mounting frame of the filter rod forming device, or can be set independently.

[0054] For further information, please refer to Figure 2 The tow ring device also includes a base plate 1, a lifting assembly 2 is arranged on the base plate 1, and the lifting assembly 2 includes a mounting seat 21 and a lifting drive unit 22. The mounting seat 21 and the base plate 1 slide in a vertical direction. The fixed end of the rotation drive unit 3 is installed on the mounting seat 21. The lifting drive unit 22 can drive the mounting seat 21 to rise and fall, so that the mounting seat 21 slides in the vertical direction relative to the base plate 1, thereby changing the position of the rotation drive unit 3 in the vertical direction.

[0055] For further information, please refer to Figure 2 , a slide rail 11 is provided on the bottom plate 1, a slide groove 211 is provided on the mounting seat 21, and the slide rail 11 and the slide groove 211 slide together in the vertical direction. Exemplarily, in order to enhance the stability of the sliding cooperation between the mounting seat 21 and the bottom plate 1, two slide rails 11 are provided on the bottom plate 1, and the two slide rails 11 are respectively provided on the two side edges of the bottom plate 1 along the first horizontal direction, and the mounting seat 21 is provided with two slide grooves 211 corresponding to the two slide rails 11. In other embodiments, a slide groove may be provided on the bottom plate 1, and a slide rail may be provided on the mounting seat 21.

[0056] For further information, please refer to Figure 2 In order to avoid interference between the tow ring 4 and the bottom plate 1, the tow ring 4 and the bottom plate 1 are spaced apart along the extension direction of the horizontal axis. The first horizontal direction is consistent with the extension direction of the horizontal axis.

[0057] For example, please refer to Figure 2The mounting base 21 includes a first panel 212 that slides with the base plate 1 in the vertical direction, and a second panel 213 that is arranged along the second horizontal direction. The second panel 213 is connected to one end of the first panel 212 to form an L-shaped plate. The first horizontal direction is perpendicular to the second horizontal direction. The fixed end of the rotation drive unit 3 is fixed on the second panel 213. The output end of the rotation drive unit 3 passes through the second panel 213 along the first horizontal direction and is connected to one end of the rotating rod 31. The other end of the rotating rod 31 is connected to a wire bundle ring 4. The wire bundle ring 4 is always spaced apart from the base plate 1 along the first horizontal direction, which further avoids the wire bundle from touching the base plate 1 after passing through the ring 41, resulting in a deviation in the angle formed by the pre-expansion segment wire bundle 302 and the vertical direction.

[0058] For further information, please refer to Figure 3 In order to save the space occupied by the tow ring device, a fixed rack 12 extending in the vertical direction is provided on the bottom plate 1, and the lifting drive unit 22 includes a lifting motor 222 and a moving gear 221. The lifting motor 222 is fixed on the mounting seat 21, and the output end of the lifting motor 222 is connected to the moving gear 221 to drive the moving gear 221 to rotate, and the moving gear 221 is meshed with the fixed rack 12. The moving gear 221 is driven to rotate by the lifting motor 222. Since the fixed rack 12 cannot be raised or lowered, the moving gear 221 will move in the vertical direction relative to the meshed fixed rack 12, thereby driving the mounting seat 21 to rise or fall, and the structure is simple and the space occupied is small.

[0059] For further information, please refer to Figure 3 In order to make the sliding cooperation between the first panel 212 and the bottom plate 1 stable, the slide groove 211 is located between the first panel 212 and the bottom plate 1, the lifting motor 222 is fixedly installed on the first panel 212, the moving gear 221 and the lifting motor 222 are located on opposite sides of the first panel 212, the output end of the lifting motor 222 passes through the first panel 212 and is connected to the moving gear 221, and the output end of the lifting motor 222 is rotatably connected to the first panel 212. By placing the moving gear 221 and the lifting motor 222 on opposite sides of the first panel 212, the distance between the first panel 212 and the bottom plate 1 is reduced, and the sliding cooperation between the first panel 212 and the bottom plate 1 is more stable.

[0060] For further information, please refer to Figure 1 and Figure 4 The filter rod forming device includes a tow arm 200, and the tow ring device also includes a fixing seat 5 for connecting the tow arm 200, and the fixing seat 5 is connected to the bottom plate 1, so that the tow ring device can be fixed on the mounting frame of the filter rod forming device.

[0061] For further information, please refer to Figure 4To ensure that the bottom plate 1 is always arranged in the vertical direction, the fixing seat 5 is installed on the bottom plate 1 through the universal joint 6. Since the setting direction of the tow boom 200 is changeable, the bottom plate 1 is often not arranged in the vertical direction after the tow ring device is fixed. The universal joint 6 can adjust the direction of the bottom plate 1 so that the bottom plate 1 is always arranged in the vertical direction. On the one hand, it can reduce the space occupied by the tow ring device in the filter rod equipment forming machine, and on the other hand, it can make the tow ring 4 be able to be lifted and lowered in the vertical direction for a longer distance.

[0062] For further information, please refer to Figure 4 In order to make the tow ring device adapt to tow booms 200 of different sizes, the fixing seat 5 includes a clamping member 51 and a mounting plate 52. The clamping member 51 and the universal joint 6 are fixedly mounted on the mounting plate 52. The clamping member 51 is used to connect the tow boom 200. The clamping member 51 can adaptively adjust the size of the clamp according to the size of the tow boom 200.

[0063] For further information, please refer to Figure 5 In order to prevent dust in the air from affecting the operation of the tow ring device, a dustproof shell 8 is provided on one side of the base plate 1. The base plate 1 is connected to the dustproof shell 8 and forms a sealed space. The lifting component 2 and the rotating drive unit 3 are both arranged in the sealed space to prevent dust from affecting the lifting component 2 and the rotating drive unit 3.

[0064] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A tow ring device, characterized in that: include: A tow ring (4), the tow ring (4) comprising a connecting rod (42) and a ring (41), the connecting rod (42) being perpendicular to the ring (41), one end of the connecting rod (42) being connected to the ring (41), and the ring (41) being used for threading the tow; A rotation drive unit (3), wherein an output end of the rotation drive unit (3) is connected to the other end of the connecting rod (42), and the rotation drive unit (3) is used to drive the filament tow ring (4) to rotate around a horizontal axis; A lifting component (2), wherein the fixed end of the rotary drive unit (3) is connected to the lifting component (2), and the lifting component (2) is used to drive the rotary drive unit (3) to lift.

2. The tow ring device according to claim 1, characterized in that: It also includes a base plate (1), and the lifting assembly (2) includes: A mounting seat (21), wherein the mounting seat (21) and the base plate (1) are slidably matched in a vertical direction, and a fixed end of the rotation drive unit (3) is mounted on the mounting seat (21); A lifting drive unit (22), wherein the lifting drive unit (22) is used to drive the mounting seat (21) to lift and lower.

3. The tow ring device according to claim 2, characterized in that: One of the base plate (1) and the mounting seat (21) is provided with a slide rail (11), and the other is provided with a slide groove (211), and the slide rail (11) and the slide groove (211) are slidably matched in a vertical direction.

4. The tow ring device according to claim 2, characterized in that: The filament bundle ring (4) and the bottom plate (1) are arranged at intervals along the extension direction of the horizontal axis.

5. The tow ring device according to claim 2, characterized in that: The bottom plate (1) is provided with a fixed rack (12) extending in a vertical direction; The lifting drive unit (22) comprises a lifting motor (222) and a moving gear (221); the lifting motor (222) is fixed on the mounting seat (21); an output end of the lifting motor (222) is connected to the moving gear (221) to drive the moving gear (221) to rotate; and the moving gear (221) is meshed with the fixed rack (12).

6. The tow ring device according to claim 5, characterized in that: The mounting seat (21) comprises a first panel (212) which is slidably matched with the base plate (1) along a vertical direction; The moving gear (221) is located between the first panel (212) and the bottom plate (1), the lifting motor (222) is fixedly installed on the first panel (212), and the moving gear (221) and the lifting motor (222) are located on opposite sides of the first panel (212); The output end of the lifting motor (222) passes through the first panel (212) and is connected to the moving gear (221). The output end of the lifting motor (222) is rotationally connected to the first panel (212).

7. The tow ring device according to claim 2, characterized in that: The tow ring device also includes a fixing seat (5) for connecting the tow boom (200), wherein the fixing seat (5) is mounted on the base plate (1) via a universal joint (6), and the universal joint (6) is used to ensure that the base plate (1) is always arranged in a vertical direction.

8. The tow ring device according to claim 7, characterized in that: The fixing seat (5) comprises a clamping member (51) and a mounting plate (52); the clamping member (51) and the universal joint (6) are both fixedly mounted on the mounting plate (52); and the clamping member (51) is used for connecting the tow boom (200).

9. The tow ring device according to claim 2, characterized in that: Also includes: A position detection unit (7) is used to detect the height of a tow package (300) formed by winding the tow.

10. A filter rod forming device, comprising an air opener (100) and a forming cigarette gun, characterized in that: It also comprises the tow ring device according to any one of claims 1 to 9, wherein the tow passes through the tow ring device, the air opener (100) and the forming gun in sequence; The air opener (100) is used to stretch the length and width of the filament bundle; The forming cigarette gun is used to make the filament bundle into a filter rod.

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