Paper tape heating structure and paper tube forming machine

Abstract

The utility model provides a paper tape heating structure. The paper tape heating structure comprises a heating block and a paper tape channel formed in the heating block, the paper tape channel extends along the length direction of the heating block; in the width direction of the heating block, the heating block is divided into a high-temperature heating block unit and a low-temperature heating block unit which are spaced from each other; the paper tape channel is located in the high-temperature heating block unit and the low-temperature heating block unit, the high-temperature heating block unit is arranged corresponding to one bonding position of the double-layer paper tape, and the low-temperature heating block unit is arranged corresponding to the other bonding position of the double-layer paper tape. Meanwhile, the utility model further provides a paper tube forming machine. Compared with the prior art, the paper tape heating structure and the paper tube forming machine provided by the utility model not only can meet the bonding between double layers of paper tapes, but also can avoid influencing the subsequent rolling forming of the double layers of paper tapes.

Description

Technical Field

[0001] This utility model relates to the field of paper tube production equipment technology, and in particular to a paper strip heating structure and a paper tube forming machine. Background Technology

[0002] Paper tubes are tubular objects made from paper strips, and they have a wide range of uses in production and daily life. For example, paper tubes can be used in tobacco products as wrappers or other functional structures.

[0003] Currently, paper tubes are typically manufactured automatically using paper tube forming machines. These machines usually include a raw material placement area, a gluing mechanism, and a forming mechanism. During production, a paper roll made from paper strip is first placed in the raw material placement area. The paper strip then passes sequentially through the gluing mechanism and the forming mechanism. The gluing mechanism first sprays glue onto the overlapping edges of the paper strip, and then the forming mechanism winds the flat paper strip into a paper tube through a circular cavity. Because glue has been pre-applied to the paper strip by the gluing mechanism, the edges of the paper strip are glued together when the forming mechanism winds it into a tube, thus forming a stable paper tube.

[0004] Current technology produces single-layer paper tubes. Because single-layer paper tubes are relatively thin, they cannot meet the requirements of some tobacco products. Therefore, there is currently a demand for the production of double-layer paper tubes. For example... Figure 1 As shown, during the production of double-layer paper tubes, the upper and lower paper tapes 200 need to be placed in a staggered manner. One side of the upper paper tape 200 is left open as the overlap of the subsequent paper tube, and the other side of the lower paper tape 200 is also left open as the overlap of the subsequent paper tube.

[0005] To meet automated production requirements, the paper tube forming machine was improved by adding a double-layer paper tape gluing mechanism and a double-layer paper tape heating mechanism in front of the gluing mechanism. During manufacturing, two paper rolls are placed in different raw material placement positions. One layer of paper tape 200 first passes through the double-layer paper tape gluing mechanism to apply hot melt adhesive to the two bonding positions 300. Then, both layers of paper tape 200 enter the double-layer paper tape heating mechanism for heating, connecting the two layers together to form a double-layer paper tape. The double-layer paper tape then sequentially enters the gluing mechanism and the forming mechanism to achieve the formation of a double-layer paper tube.

[0006] However, the existing structure for heating hot melt adhesive usually uses a single heating block for high-temperature heating. While this structure is beneficial for bonding the two layers of paper tape 200, directly bonding the two layers of paper tape 200 together is not conducive to the subsequent winding of the two layers of paper tape 200 and affects the formation of the double-layer paper tube.

[0007] Therefore, how to provide a paper tape heating structure that can both satisfy the bonding between the two layers of paper tape and avoid affecting the subsequent forming of the double-layer paper tube is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0008] To address the aforementioned technical problems, this utility model provides a paper tape heating structure, which includes a high-temperature heating block unit and a low-temperature heating block unit. When the double-layer paper tape flows through the paper tape heating structure, the two bonding positions respectively flow through the high-temperature heating block unit and the low-temperature heating block unit. The high-temperature heating block unit can bond one bonding position on the double-layer paper tape at high temperature, while the low-temperature heating block unit can position the other bonding position on the double-layer paper tape at low temperature, thereby ensuring a firm bond between the double-layer paper tapes and avoiding affecting the subsequent forming of the double-layer paper tube.

[0009] A paper tape heating structure includes a heating block and a paper tape channel formed in the heating block;

[0010] The paper tape channel extends along the length of the heating block;

[0011] Along the width direction of the heating block, the heating block is divided into high-temperature heating block units and low-temperature heating block units that are spaced apart from each other;

[0012] The paper tape channel is located in the high-temperature heating block unit and the low-temperature heating block unit. The high-temperature heating block unit is set at one bonding position of the double-layer paper tape, and the low-temperature heating block unit is set at the other bonding position of the double-layer paper tape.

[0013] Preferably, the paper tape channel is formed on the surface of the heating block.

[0014] Preferably, it also includes a pressure shaft, which is located above the paper tape channel to limit the double-layer paper tape.

[0015] Preferably, the pressure shaft extends along the width direction of the heating block.

[0016] Preferably, along the length of the heating block, multiple pressure shafts are arranged at intervals.

[0017] Preferably, the pressure shaft is connected to the heating block.

[0018] Preferably, it also includes a housing, in which the heating block is installed.

[0019] Preferably, it further includes a sliding unit, wherein the outer casing is disposed on the sliding table of the sliding unit, and the sliding direction of the sliding table is the width direction of the heating block.

[0020] A paper tube forming machine includes a raw material placement area, a double-layer paper tape gluing mechanism, a double-layer paper tape heating mechanism, a gluing mechanism, and a forming mechanism.

[0021] The double-layer paper tape coating mechanism is located behind the raw material placement position;

[0022] The double-layer paper tape heating mechanism is located behind the double-layer paper tape gluing mechanism and is provided with a paper tape heating structure as described in any one of the above descriptions.

[0023] The glue coating mechanism is located behind the double-layer paper tape heating mechanism;

[0024] The molding mechanism is located behind the adhesive coating mechanism.

[0025] Preferably, at least two double-layer paper tape heating mechanisms are provided along the conveying direction of the double-layer paper tape.

[0026] Compared with the prior art, the paper tape heating structure provided by this utility model includes a heating block and a paper tape channel formed in the heating block; the paper tape channel extends along the length direction of the heating block; along the width direction of the heating block, the heating block is divided into mutually spaced high-temperature heating block units and low-temperature heating block units; the paper tape channel is located in the high-temperature heating block units and the low-temperature heating block units, the high-temperature heating block units are set corresponding to one bonding position of the double-layer paper tape, and the low-temperature heating block units are set corresponding to the other bonding position of the double-layer paper tape. The paper tape heating structure includes the high-temperature heating block units and the low-temperature heating block units. When the double-layer paper tape flows through the paper tape heating structure, the high-temperature heating block units can perform high-temperature bonding on one bonding position of the double-layer paper tape, thereby ensuring a firm bond between the two paper tapes; while the low-temperature heating block units perform low-temperature positioning on the other bonding position of the double-layer paper tape, without directly performing high-temperature bonding on the other bonding position, thus facilitating the subsequent winding and forming of the double-layer paper tube. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the cross-sectional structure of a double-layer paper tape provided in one embodiment;

[0029] Figure 2 A three-dimensional structural diagram of a paper tape heating structure provided in one embodiment;

[0030] Figure 3 for Figure 2 A three-dimensional structural diagram of the heating block and the pressure shaft is shown.

[0031] Figure 4 This is a front view of a paper tube forming machine provided in one embodiment. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that when a component is referred to as being "fixed to", "mounted to", or "set on" another component, it can be directly on or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0036] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0037] This utility model provides a paper tape heating structure, which includes a heating block and a paper tape channel formed in the heating block; the paper tape channel extends along the length direction of the heating block; along the width direction of the heating block, the heating block is divided into mutually spaced high-temperature heating block units and low-temperature heating block units; the paper tape channel is located at the high-temperature heating block units and the low-temperature heating block units, the high-temperature heating block units are set at one bonding position of the double-layer paper tape, and the low-temperature heating block units are set at the other bonding position of the double-layer paper tape. The paper tape heating structure includes the high-temperature heating block units and the low-temperature heating block units. When the double-layer paper tape flows through the paper tape heating structure, the high-temperature heating block units can perform high-temperature bonding at one bonding position of the double-layer paper tape, thereby ensuring a firm bond between the two paper tapes; while the low-temperature heating block units perform low-temperature positioning at the other bonding position of the double-layer paper tape, without directly performing high-temperature bonding at the other bonding position, thus facilitating the subsequent winding and forming of the double-layer paper tube.

[0038] Please refer to the following: Figures 1 to 3 In one embodiment, a paper tape heating structure 100 is provided, which is mainly used to heat and bond double-layer paper tapes, so as to satisfy the bonding between the double-layer paper tapes and avoid affecting the subsequent forming of double-layer paper tubes.

[0039] The paper tape heating structure 100 includes a heating block 10 and a paper tape channel 20 formed in the heating block 10. The paper tape channel 20 is used for the flow of double-layer paper tape; specifically, when double-layer paper tape flows into the paper tape heating structure 100, it flows into the paper tape channel 20 and gradually flows out of the paper tape heating structure 100 along the paper tape channel 20. The paper tape channel 20 extends along the length direction of the heating block 10. The length direction of the heating block 10 is as follows: Figure 2 As shown in the X direction, the width direction of the heating block 10 is as follows: Figure 2 As shown in the Y direction, the thickness direction of the heating block 10 is... Figure 2 The Z direction is shown.

[0040] Along the width of the heating block 10, the heating block 10 is divided into mutually spaced high-temperature heating block units 11 and low-temperature heating block units 12. The high-temperature heating block unit 11 refers to the unit with a relatively higher operating temperature during operation; the low-temperature heating block unit 12 refers to the unit with a relatively lower operating temperature during operation. That is, the heating temperatures on both sides of the heating block 10 are different along its width, with one side having a relatively higher temperature and the other side having a relatively lower temperature. Furthermore, the high-temperature heating block unit 11 and the low-temperature heating block unit 12 are spaced apart, thus preventing heat from easily conducting between them.

[0041] The paper tape channel 20 is located in both the high-temperature heating block unit 11 and the low-temperature heating block unit 12. Specifically, a portion of the paper tape channel 20 is located on the high-temperature heating block unit 11, and the other portion is located on the low-temperature heating block unit 12. The high-temperature heating block unit 11 is configured at one bonding position 300 of the double-layer paper tape, and the low-temperature heating block unit 12 is configured at the other bonding position of the double-layer paper tape. In other words, when the double-layer paper tape flows into the paper tape channel 20, one bonding position 300 on the double-layer paper tape is located in the high-temperature heating block unit 11, where it is heated at high temperature; while the other bonding position 300 is located in the low-temperature heating block unit 12, where it is positioned at low temperature.

[0042] It is understandable that, since the double-layer paper tape is laid flat when heated, if a single heating block is used to completely bond the double-layer paper tape firmly, it will be difficult to roll the double-layer paper tape into a circle during the subsequent winding process, which will affect the smooth formation of the double-layer paper tube.

[0043] In this embodiment, the heating block 10 is modified into a split design, and the two sides can be heated at different temperatures. One side is heated at high temperature to bond firmly, thereby ensuring the strong adhesion between the two layers of paper tape; while the other side is positioned at low temperature, so that the glue will not be completely bonded, which facilitates the subsequent winding of the two layers of paper tape and is conducive to the smooth formation of the two layers of paper tube.

[0044] The high-temperature heating block unit 11 and the low-temperature heating block unit 12 can adopt any heating structure, as long as they can achieve constant temperature heating, such as using a resistance wire structure, which is well known in the art and will not be described in detail here. The specific heating temperature used by the high-temperature heating block unit 11 and the low-temperature heating block unit 12 can be selected according to specific production needs or specific experimental data. It is sufficient that one side can meet the high-temperature melting requirement to ensure a firm bond between the two layers of paper tape, and the other side can perform low-temperature positioning to allow the adhesive to set and position.

[0045] Preferably, in one embodiment, the paper tape channel 20 is formed on the surface of the heating block 10. Specifically, in one embodiment, the paper tape channel 20 is formed on the top surface of the heating block 10.

[0046] Preferably, in one embodiment, the paper tape heating structure 100 further includes a pressure shaft 30, which is located above the paper tape channel 20 and is used to limit the double-layer paper tape. By setting the pressure shaft 30, the double-layer paper tube can be pressed down to a certain extent, thereby improving the bonding and fixing effect.

[0047] Preferably, in one embodiment, the pressure shaft 30 extends along the width direction of the heating block 10, that is, the axis of the pressure shaft 30 is parallel to the width direction of the heating block 10. This allows the pressure shaft 30 to roll and press down on the double-layer paper tape, better avoiding wear on the double-layer paper tape.

[0048] Preferably, in one embodiment, multiple pressure shafts 30 are arranged sequentially at intervals along the length direction of the heating block 10, which can further improve the pressing effect.

[0049] Understandably, during the production process, the double-layer paper tape (double-layer paper tube) may shift laterally due to various factors, resulting in a certain offset between the front and rear positions of the double-layer paper tape (double-layer paper tube). Therefore, it is often necessary to adjust the position of the heating block 10 to accommodate the positions of the front and rear double-layer paper tape (double-layer paper tube).

[0050] Preferably, in one embodiment, the pressure shaft 30 is connected to the heating block 10. This allows for simultaneous adjustment of the position of the pressure shaft 30 while adjusting the position of the heating block 10, eliminating the need for additional adjustment of the pressure shaft 30 and thus improving adjustment efficiency.

[0051] Preferably, in one embodiment, the paper tape heating structure 100 further includes a housing 40, and the heating block 10 is installed in the housing 40, thereby better ensuring safety.

[0052] Preferably, in one embodiment, the paper tape heating structure 100 further includes a sliding unit 50, and the outer shell 40 is disposed on the slide table of the sliding unit 50. The sliding direction of the slide table is the width direction of the heating block 10. The sliding unit 50 facilitates the adjustment of the lateral position of the heating block 10 to better accommodate the offset of the double-layer paper tape (double-layer paper tube). Specifically, the sliding unit 50 can adopt any desired structure, such as an electric slide table, a pneumatic slide table, or even a manually driven method, as long as it can drive the heating block 10 to move laterally.

[0053] Please refer to the following: Figure 4Meanwhile, in one embodiment, a paper tube forming machine 400 is also provided, which includes a raw material placement position 410, a double-layer paper tape gluing mechanism 420, a double-layer paper tape heating mechanism 430, a gluing mechanism 440, and a forming mechanism 450. The raw material placement position 410 is used to place paper rolls formed by winding paper tape. Specifically, there are two raw material placement positions 410, and each of the two raw material placement positions 410 holds a paper roll. The double-layer paper tape gluing mechanism 420 is located behind the raw material placement position 410, wherein the rear side is referenced to the conveying direction of the paper tape. One paper tape in the raw material placement position 410 flows through the double-layer paper tape gluing mechanism 420. The double-layer paper tape gluing mechanism 420 is provided with two glue guns, and the two glue guns spray glue onto two bonding positions 300 respectively. The double-layer paper tape heating mechanism 430 is located behind the double-layer paper tape gluing mechanism 420, and the double-layer paper tape heating mechanism 430 is equipped with the paper tape heating structure 100. The double-layer paper tape heating mechanism 430 is used to heat and bond the glued double-layer paper tape. The gluing mechanism 440 is located behind the double-layer paper tape heating mechanism 430, and the forming mechanism 450 is located behind the gluing mechanism 440. After the double-layer paper tape flows out of the double-layer paper tape heating mechanism 430, it first flows into the gluing mechanism 440 for gluing, and then flows into the cavity of the forming mechanism 450 to form the double-layer paper tube.

[0054] Preferably, in one embodiment, at least two double-layer paper tape heating mechanisms 430 are provided along the conveying direction of the double-layer paper tape, thereby enabling longer-term melt fixation.

[0055] Preferably, in one embodiment, a paper tube forming unit is also provided, which includes the paper tube forming machine 400 and a small paper tube forming machine 500 located in front of the paper tube forming machine 400. The small paper tube forming machine 500 is used to form three small paper tubes (the paper tubes formed by the small paper tube forming machine 500 have a smaller diameter than those formed by the paper tube forming machine 400). After the small paper tubes are formed by the small paper tube forming machine 500, they are fed into the forming mechanism 450, so that the small paper tubes are located inside the double-layer paper tube formed by the paper strip 200, thereby making the final formed paper tube a multi-paper tube structure (i.e., a structure in which a large paper tube contains multiple small paper tubes), thus meeting the needs of production use.

[0056] The small paper tube forming machine 500 may also include a corresponding raw material placement position, a glue coating mechanism, and a forming mechanism, thereby realizing the automatic winding and forming of paper tape into paper tubes, which will not be elaborated here.

[0057] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A paper tape heating structure, characterized in that, Includes a heating block and a paper tape channel formed in the heating block; The paper tape channel extends along the length of the heating block; Along the width direction of the heating block, the heating block is divided into high-temperature heating block units and low-temperature heating block units that are spaced apart from each other; The paper tape channel is located in the high-temperature heating block unit and the low-temperature heating block unit. The high-temperature heating block unit is set at one bonding position of the double-layer paper tape, and the low-temperature heating block unit is set at the other bonding position of the double-layer paper tape.

2. The paper tape heating structure according to claim 1, characterized in that, The paper tape channel is formed on the surface of the heating block.

3. The paper tape heating structure according to claim 2, characterized in that, It also includes a pressure shaft, which is located above the paper tape channel to limit the double-layer paper tape.

4. The paper tape heating structure according to claim 3, characterized in that, The pressure shaft extends along the width direction of the heating block.

5. The paper tape heating structure according to claim 4, characterized in that, Along the length of the heating block, multiple pressure shafts are arranged at intervals.

6. The paper tape heating structure according to claim 3, characterized in that, The pressure shaft is connected to the heating block.

7. The paper tape heating structure according to claim 1, characterized in that, It also includes a housing, in which the heating block is installed.

8. The paper tape heating structure according to claim 7, characterized in that, It also includes a sliding unit, the outer shell being disposed on the sliding table of the sliding unit, the sliding direction of the sliding table being the width direction of the heating block.

9. A paper tube forming machine, characterized in that, It includes a raw material placement area, a double-layer paper tape gluing mechanism, a double-layer paper tape heating mechanism, a gluing mechanism, and a forming mechanism; The double-layer paper tape coating mechanism is located behind the raw material placement position; The double-layer paper tape heating mechanism is located behind the double-layer paper tape coating mechanism and is provided with a paper tape heating structure as described in any one of claims 1 to 8; The glue coating mechanism is located behind the double-layer paper tape heating mechanism; The molding mechanism is located behind the adhesive coating mechanism.

10. The paper tube forming machine according to claim 9, characterized in that, Along the conveying direction of the double-layer paper tape, at least two double-layer paper tape heating mechanisms are provided.

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