Paper tube forming device and filter stick forming equipment

Abstract

The utility model discloses a paper tube forming device and filter stick forming equipment, and the paper tube forming device comprises a bottom plate, an arc-shaped cavity is formed in the bottom plate, and the diameter of the arc-shaped cavity is gradually reduced in the moving direction of forming paper; the pressing block is arranged above the large end of the arc-shaped cavity, the bottom face of the pressing block protrudes in the direction of the arc-shaped cavity, and an arc-shaped channel for forming paper to move is formed between the pressing block and the arc-shaped cavity; the pressing plate set is arranged above the small end of the arc-shaped cavity, and the pressing plate set is used in cooperation with the arc-shaped cavity and used for extruding and forming the forming paper into a paper tube in a preset shape. Compared with the prior art, the paper tube forming device and the filter stick forming equipment provided by the utility model have the advantages that paper tubes with smaller diameters can be formed, the processing precision is higher, and the stability is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tobacco production, and more particularly to a paper tube forming device and a filter rod forming equipment. BACKGROUND

[0002] Compared with traditional cigarettes, the smoke generation mode of heat-not-burn cigarettes is heating instead of burning, the heating temperature is below 500°C, and the generated aerosol is limited. However, due to the high water content in the heating segment of heat-not-burn cigarettes, the temperature of the generated aerosol is relatively high, so the filter segment of heat-not-burn cigarettes is relatively longer than that of traditional cigarettes, thereby increasing the cooling time and path of the generated aerosol. However, the longer filter segment will adsorb and intercept more aerosol, thereby reducing the amount of smoke and nicotine entering the mouth.

[0003] In order to reduce the adsorption and interception of aerosol by filter rods of cigarettes, paper tubes are widely used in composite filter rods in the industry. However, the current paper tubes are usually wrapped with cloth tape, and the paper tube is formed in the gun under the driving of the cloth tape. However, for paper tubes with smaller diameters, the above forming method cannot meet the requirements of precision and stability.

[0004] Therefore, there is an urgent need for a paper tube forming device and a filter rod forming equipment, which can form paper tubes with smaller diameters, and have higher processing precision and better stability. CONTENT OF THE INVENTION

[0005] To solve the above technical problems, the present application provides a paper tube forming device and a filter rod forming equipment, which can form paper tubes with smaller diameters, and have higher processing precision and better stability.

[0006] The technical scheme provided by the present application is as follows:

[0007] A paper tube forming device, comprising:

[0008] A bottom plate is provided with an arc-shaped cavity, and the diameter of the arc-shaped cavity gradually decreases along the direction of movement of the forming paper;

[0009] A pressing block is arranged above the large end of the arc-shaped cavity, the bottom surface of the pressing block protrudes towards the direction of the arc-shaped cavity, and the pressing block and the arc-shaped cavity form an arc-shaped channel for the movement of the forming paper;

[0010] A pressing plate group is arranged above the small end of the arc-shaped cavity, and the pressing plate group is used in cooperation with the arc-shaped cavity to extrude the forming paper into a paper tube with a predetermined shape.

[0011] Preferably, it further comprises:

[0012] A forming shaft is arranged in the arc-shaped cavity, and one end of the forming shaft is connected with the pressing block.

[0013] Preferably, the bottom surface of the pressing block is conical in shape, and the cross-sectional size of the pressing block is tapered towards the arc-shaped cavity.

[0014] Preferably, the bottom surface of the pressing block is a circular arc bottom surface.

[0015] Preferably, the pressing plate set comprises:

[0016] A first pressing plate and a second pressing plate are respectively arranged on two sides of the arc-shaped cavity, and the first pressing plate, the second pressing plate and the arc-shaped cavity form a preset shape accommodating groove.

[0017] Preferably, along the direction extending along the arc-shaped cavity, the first pressing plate comprises a first forming portion, a first transition portion and a first guide portion arranged in sequence, the second pressing plate comprises a second guide portion, a second transition portion and a second forming portion arranged in sequence, the first forming portion is arranged above the arc-shaped cavity, a forming groove is arranged below the first forming portion, the first guide portion is arranged outside the arc-shaped cavity, and the first transition portion is used to connect the first forming portion and the first guide portion.

[0018] Preferably, three arc-shaped cavities are arranged along the width direction of the bottom plate, and the pressing block, the pressing plate set and the arc-shaped cavities are arranged one by one.

[0019] Preferably, further comprising:

[0020] A gluing assembly for gluing the forming paper, the arc-shaped cavity is used for receiving the forming paper after gluing, and the forming paper is extruded into a paper tube with a preset shape;

[0021] A shaping assembly for shaping the paper tube.

[0022] Preferably, the shaping assembly comprises:

[0023] A shaping block is arranged above the arc-shaped cavity, and a shaping cavity is formed between the shaping block and the arc-shaped cavity.

[0024] A heating mechanism is arranged above the shaping block and is used for heating the paper tube.

[0025] A cooling mechanism is arranged above the shaping block and is used for cooling the heated paper tube.

[0026] A filter rod forming equipment, comprising the paper tube forming device of any one of the above.

[0027] The paper tube forming device provided by the utility model, firstly, due to being provided with the bottom plate, the arc cavity is arranged on the bottom plate, the arc cavity is used for placing the forming paper and moving the forming paper in the arc cavity, the diameter of the arc cavity is tapered along the direction of the forming paper movement, the bottom of the forming paper is constrained into a preset shape through the change of the shape of the arc cavity and the inner wall of the arc cavity. Secondly, the pressing block and the pressing plate are further arranged, wherein the pressing block is arranged above the large end of the arc cavity, the bottom surface of the pressing block protrudes towards the arc cavity, the forming paper is pre-pressed through the pressing block, the arc-shaped channel for the movement of the forming paper is formed between the pressing block and the arc cavity, when the forming paper enters the arc cavity, the bottom surface of the pressing block pre-presses the forming paper, so that the forming paper is attached to the bottom surface of the arc cavity and the forming paper is formed into the arc-shaped structure with the open top, the forming paper moves in the arc-shaped channel along the arc cavity, the pressing plate group is arranged above the small end of the arc cavity, the pressing plate group is used in cooperation with the arc cavity to extrude the arc-shaped forming paper into the paper tube with the preset shape. In this way, the forming paper is first pre-pressed into the arc shape through the pressing block and the arc cavity, then the arc-shaped structure is extruded into the paper tube through the cooperation of the pressing plate group and the arc cavity, the shapes of the arc cavity, the pressing block and the pressing plate group are all rigid structures, the forming precision is higher and the stability is better, and based on the use requirement, the device can be used for the forming of the paper tube with a smaller diameter. It can be seen that, compared with the prior art, the paper tube forming device in the utility model embodiment can form the paper tube with a smaller diameter, the processing precision is higher and the stability is better.

[0028] The application also provides a filter rod forming device comprising the paper tube forming device. ACCURACY

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0030] Figure 1 A structural schematic view of the paper tube forming device provided by the utility model embodiment;

[0031] Figure 2 A partial enlarged view of Figure 1

[0032] Figure 3 A structural schematic view of the top view of the paper tube forming device provided by the utility model embodiment;

[0033] Figure 4 A partial enlarged view of Figure 3 ​​

[0034] Figure 5 A-A is a sectional view provided for the embodiment of the utility model;

[0035] Figure 6 A structure schematic view of the second pressing plate provided for the embodiment of the utility model;

[0036] Figure 7 A structure schematic view of the paper tube forming device provided for the embodiment of the utility model (with a shaping block);

[0037] Figure 8 A structure schematic view of the paper tube forming device provided for the embodiment of the utility model (with a shaping assembly).

[0038] The figure mark: 1, bottom plate; 2, arc cavity; 3, pressing block; 4, pressing plate group; 5, forming shaft; 6, heating mechanism; 7, cooling mechanism; 8, shaping block; 41, first pressing plate; 42, second pressing plate; 43, accommodating groove; 411, first forming part; 412, first transition part; 413, first guide part; 421, second guide part; 422, second transition part; 423, second forming part. DETAILED DESCRIPTION

[0039] In order to make the skilled in the art better understand the technical scheme in the present application, the technical scheme in the embodiment of the present application will be described clearly and completely below, obviously, the described embodiment is only a part of the embodiment of the present application, not all the embodiments. Based on the embodiment in the present application, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the present application.

[0040] It should be noted that when an element is referred to as "fixed to" or "set to" another element, it can be directly on another element or indirectly on another element; when an element is referred to as "connected to" another element, it can be directly connected to another element or indirectly connected to another element.

[0041] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0042] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of the technical features. Therefore, the features with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0043] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the disclosed content, to be understood and read by those skilled in the art, and do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effect and purpose that can be achieved by the present application, should still fall within the scope of the disclosed technical content.

[0044] The embodiments of the present application are written in a progressive manner.

[0045] As shown in Figures 1 to 8 The embodiments of the present application provide a paper tube forming device, which comprises a bottom plate 1, an arc-shaped cavity 2 is arranged on the bottom plate 1, the arc-shaped cavity 2 is used for placing a forming paper, the diameter of the arc-shaped cavity 2 is tapered along the direction of the forming paper movement; a pressing block 3 is arranged above the large end of the arc-shaped cavity 2, the bottom surface of the pressing block 3 protrudes towards the direction of the arc-shaped cavity 2, and an arc-shaped channel for the movement of the forming paper is formed between the pressing block 3 and the arc-shaped cavity 2; a pressing plate group 4 is arranged above the small end of the arc-shaped cavity 2, and the pressing plate group 4 is used in cooperation with the arc-shaped cavity 2 to extrude the forming paper into a paper tube with a preset shape.

[0046] At present, the paper tube forming is often wrapped with a cloth tape to form a paper tube in a smoke gun, but for some small-diameter paper tubes, for example, the diameter of the paper tube is about 3mm, the forming method in the prior art may not meet the size requirements.

[0047] The paper tube forming device provided by the utility model, firstly, because the bottom plate 1 is arranged, the arc cavity 2 is arranged on the bottom plate 1, the arc cavity 2 is used for placing the forming paper and moving the forming paper in the arc cavity 2, the diameter of the arc cavity 2 is gradually reduced along the direction of the movement of the forming paper, the bottom of the forming paper is restrained into a preset shape through the change of the shape of the arc cavity 2 and the inner wall of the arc cavity 2. Secondly, the pressing block 3 and the pressing plate are further arranged, wherein the pressing block 3 is arranged above the large end of the arc cavity 2, the bottom surface of the pressing block 3 protrudes towards the arc cavity 2, the forming paper is pre-pressed through the pressing block 3, the arc-shaped channel for the movement of the forming paper is formed between the pressing block 3 and the arc cavity 2, when the forming paper enters the arc cavity 2, the bottom surface of the pressing block 3 pre-presses the forming paper, so that the forming paper is attached to the bottom surface of the arc cavity 2 and the forming paper is formed into the arc-shaped structure with the top opening, the forming paper moves in the arc-shaped channel along the arc cavity 2, the pressing plate group 4 is arranged above the small end of the arc cavity 2, the pressing plate group 4 is used in cooperation with the arc cavity 2, and the arc-shaped forming paper is extruded into the paper tube with the preset shape. In this way, firstly, the forming paper is pre-pressed into the arc shape through the pressing block 3 and the arc cavity 2, then the arc-shaped structure is extruded into the paper tube through the cooperation of the pressing plate group 4 and the arc cavity 2, in this way, the shapes of the arc cavity 2, the pressing block 3 and the pressing plate group 4 are all rigid structures, the forming precision is higher, the stability is better, and based on the need of use, the device can be used in the forming of the paper tube with a smaller diameter. It can be seen that, compared with the prior art, the paper tube forming device in the utility model embodiment can form the paper tube with a smaller diameter, the machining precision is higher, and the stability is better.

[0048] It should be noted that the bottom surface of the pressing block 3 extends towards the arc cavity 2, the forming paper is pressed in the arc cavity 2 through the pressing block 3, so that the forming paper is formed into the shape that the bottom surface is adapted to the shape of the arc cavity 2 and the top surface is open. The pressing block 3 is arranged at the large end of the arc cavity 2, the forming paper is pre-pressed when being input into the large end of the arc cavity 2, the bottom surface of the forming paper is formed through the surface of the arc cavity 2 in the conveying process, finally, the forming paper is formed into the paper tube with the preset shape through the cooperation of the pressing block 3 group and the arc cavity 2 in the small end of the arc cavity 2, and the forming paper is gradually formed in the conveying process, so the stability is better.

[0049] Further, in order to better support the hollow paper tube, as one of the embodiments, the paper tube forming device in the utility model embodiment further comprises a forming shaft 5, wherein the forming shaft 5 is arranged in the arc cavity 2, one end of the forming shaft 5 is connected with the pressing block 3, the other end of the forming shaft 5 extends along the axis direction of the arc cavity 2, the forming shaft 5 supports and guides the paper tube, so that the forming paper advances along the preset path, and the roundness of the formed paper tube can be ensured.

[0050] More specifically, the pressing block 3 is provided with a mounting hole, and one end of the forming shaft 5 is fixedly connected with the pressing block 3 through the mounting hole. As a preferred embodiment, the forming shaft 5 of the utility model is detachably connected with the mounting hole, so that the forming shaft 5 can be replaced conveniently.

[0051] Further, as one of the embodiments, the pressing block 3 of the paper tube forming device is in a conical structure, and the cross-sectional size of the pressing block 3 is tapered towards the arc-shaped cavity 2. The bottom surface of the pressing block 3 forms a gap with the arc-shaped cavity 2 for the movement of the forming paper. When the forming paper is pre-pressed on the arc-shaped cavity 2 by the pressing block 3, the forming paper can still move along the arc-shaped cavity 2.

[0052] In order to avoid the bottom surface of the pressing block 3 from damaging the forming paper, as one of the embodiments, the bottom surface of the pressing block 3 is in a circular arc shape.

[0053] As shown in Figures 3 to 6 As one of the above-mentioned modes, the pressing plate set 4 of the utility model comprises a first pressing plate 41 and a second pressing plate 42. The first pressing plate 41 and the second pressing plate 42 are arranged on the two sides of the arc-shaped cavity 2 respectively, and the first pressing plate 41, the second pressing plate 42 and the arc-shaped cavity 2 form a preset shape accommodating groove 43. The paper tube of the preset shape is formed through the accommodating groove 43.

[0054] More specifically, the first pressing plate 41 and the second pressing plate 42 are fixedly connected with the bottom plate 1. Preferably, the first pressing plate 41 and the bottom plate 1 are connected through screw threads, and the second pressing plate 42 and the bottom plate 1 are connected through screw threads.

[0055] Further, the utility model also provides a specific structure of the first pressing plate 41 and the second pressing plate 42. Specifically, along the extending direction of the arc-shaped cavity 2, the first pressing plate 41 comprises a first forming part 411, a first transition part 412 and a first guide part 413 arranged in sequence, and the second pressing plate 42 comprises a second guide part 421, a second transition part 422 and a second forming part 423 arranged in sequence. The first forming part 411 is arranged above the arc-shaped cavity 2, the bottom surface of the first forming part 411 is provided with a forming groove, the first guide part 413 is arranged outside the arc-shaped cavity 2, and the first transition part 412 is used for connecting the first forming part 411 and the first guide part 413.

[0056] Similarly, the second forming part 423 is arranged above the cavity, the bottom of the second forming part 423 is provided with a forming groove, the second guide part 421 is arranged outside the arc-shaped cavity 2, and the second transition part 422 is used for connecting the second forming part 423 and the second guide part 421.

[0057] Specifically, at the front end of the first pressing plate 41, the accommodation groove 43 is formed between the first forming part 411, the second guide part 421 and the arc-shaped cavity 2, the bottom surface of the forming paper is formed into an arc-shaped forming paper through the arc-shaped cavity 2, the first side of the arc-shaped forming paper is formed through the constraint of the first forming part 411, the second side of the arc-shaped forming paper is guided through the second guide part 421, and as the forming paper moves to the end of the first pressing plate 41, the accommodation groove 43 is formed between the second forming part 423, the first guide part 413 and the arc-shaped cavity 2, the second side of the arc-shaped forming paper is formed into a paper tube through the constraint of the second forming part 423, and the first side of the paper tube is guided through the first guide part 413, so that the forming paper is extruded into a paper tube with a preset shape.

[0058] In the above structure, as one of the embodiments, the arc-shaped cavity 2 in the embodiment of the utility model is provided with three arc-shaped cavities, which are arranged at intervals along the width direction of the bottom plate 1, the arc-shaped cavities 2 extend along the length direction of the bottom plate 1, the pressing block 3, the pressing plate group 4 and the arc-shaped cavity 2 are arranged one by one, in this way, three paper tubes can be formed at the same time, and the three paper tubes are arranged in a “pin” shape in contact with each other.

[0059] Further, the forming shaft 5 is also provided with three forming shafts, and the forming shaft 5 is arranged in the forming groove 43 and corresponds to the accommodation groove 43 one by one.

[0060] In the above structure, as one of the embodiments, the paper tube forming device in the embodiment of the utility model further comprises a gluing assembly (not shown in the figure) and a shaping assembly, wherein the gluing assembly is used for gluing the forming paper, the arc-shaped cavity 2 is used for receiving the forming paper after gluing and extruding the forming paper into a paper tube with a preset shape; and the shaping assembly is used for shaping the paper tube.

[0061] Specifically, the forming paper is glued by the gluing assembly before being conveyed to the arc-shaped cavity 2, and the forming paper is extruded into a paper tube with a preset shape during the conveying process in the arc-shaped cavity 2, and the paper tube is subsequently conveyed to the shaping assembly for shaping.

[0062] Further, the shaping assembly in the embodiment of the utility model comprises a shaping block 8, a heating mechanism 6 and a cooling mechanism 7, wherein the shaping block 8 is arranged above the arc-shaped cavity, a shaping cavity is formed between the arc-shaped cavity and the shaping block 8, the shaping cavity is used for receiving the paper tube, the heating mechanism 6 is arranged above the shaping block 8 and is used for heating the paper tube with a preset shape; and the cooling mechanism 7 is used for cooling and shaping the heated paper tube.

[0063] Specifically, the arc-shaped cavity 2 and the sizing block 8 form a sizing cavity, the forming shaft 5 extends to the inside of the sizing cavity, and further, the bottom surface of the sizing block 8 is a semicircular structure, and the surface of the part of the arc-shaped cavity used in cooperation with the sizing block 8 is a semicircular structure, and the arc-shaped cavity and the sizing block 8 form the sizing cavity.

[0064] The paper tube is heated by the heating mechanism 6 first, so that the glue on the paper tube is melted, and then the paper tube is cooled by the cooling mechanism 7, so that the glue in the paper tube is solidified.

[0065] More specifically, the heating mechanism 6 in the embodiment of the utility model is used for heating the paper tube, and the heating mechanism 6 can be a steam generator, an electric soldering iron or a heating coil, and the specific form of the heating mechanism 6 is not limited here.

[0066] Specifically, the cooling mechanism 7 is used for cooling the paper tube, and the cooling mechanism 7 can be an air pump, which uses normal room temperature air to cool and cool the paper tube, or uses the mode of connecting a cooling interface to cool the whole.

[0067] The application also provides a filter rod forming equipment comprising the paper tube forming device, which can also form a paper tube with a smaller diameter, has higher processing precision and good stability.

[0068] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A paper tube forming apparatus characterized by comprising: The paper tube forming device comprises a bottom plate (1) provided with an arc-shaped cavity (2) with a gradually reduced diameter along the direction of movement of the forming paper; a pressing block (3) arranged above the large end of the arc-shaped cavity (2), the bottom surface of the pressing block (3) protruding towards the arc-shaped cavity (2), and an arc-shaped channel for the movement of the forming paper being formed between the pressing block (3) and the arc-shaped cavity (2); and a pressing plate set (4) arranged above the small end of the arc-shaped cavity (2), the pressing plate set (4) being used in cooperation with the arc-shaped cavity (2) to extrude the forming paper into a paper tube with a preset shape.

2. The paper tube forming device according to claim 1, further comprising: a forming shaft (5) arranged in the arc-shaped cavity (2), one end of the forming shaft (5) being connected to the pressing block (3).

3. The paper tube forming device according to claim 2, wherein the bottom surface of the pressing block is conical in shape, and the cross-sectional size of the pressing block gradually reduces towards the arc-shaped cavity.

4. The paper tube forming device according to claim 3, wherein the bottom surface of the pressing block is a circular arc bottom surface.

5. The paper tube forming device according to any one of claims 1 to 4, wherein the pressing plate set (4) comprises: a first pressing plate (41) and a second pressing plate (42) arranged on the two sides of the arc-shaped cavity (2) respectively, and a preset shape accommodating groove (43) being formed between the first pressing plate (41), the second pressing plate (42) and the arc-shaped cavity (2).

6. The paper tube forming device according to claim 5, wherein along the direction of extension of the arc-shaped cavity, the first pressing plate (41) comprises a first forming portion (411), a first transition portion (412) and a first guide portion (413) arranged in sequence, the second pressing plate (42) comprises a second guide portion (421), a second transition portion (422) and a second forming portion (423) arranged in sequence, the first forming portion (411) is arranged above the arc-shaped cavity (2), a forming groove is arranged below the first forming portion (411), the first guide portion (413) is arranged outside the arc-shaped cavity (2), and the first transition portion (412) is used to connect the first forming portion (411) and the first guide portion (413).

7. The paper tube forming device according to any one of claims 1 to 4 or 6, wherein three arc-shaped cavities (2) are arranged along the width direction of the bottom plate (1) at intervals, and the pressing block, the pressing plate set and the arc-shaped cavities are arranged one by one in correspondence.

8. The paper tube forming device according to any one of claims 1 to 4 or 6, further comprising: a glue applying assembly for applying glue to the forming paper, the arc-shaped cavity being used to receive the forming paper after glue application and extrude the forming paper into a paper tube with a preset shape; and a shaping assembly for shaping the paper tube.

9. The paper tube forming device according to claim 8, wherein the shaping assembly comprises: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A shaping block is arranged above the arc-shaped cavity (2), and a shaping cavity is formed between the shaping block and the arc-shaped cavity; A heating mechanism (6) is arranged above the shaping block to heat the paper tube; A cooling mechanism (7) is arranged above the shaping block to cool the heated paper tube.

10. A filter rod forming apparatus characterized by comprising: The paper tube forming device comprises the paper tube forming device according to any one of claims 1 to 9.

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