A tipping paper tray fastening device

Abstract

The utility model relates to cigarette packing machine auxiliary frock technical field discloses a kind of tipping paper disc paper rack fastening devices, comprising: inner shaft sleeve, fixedly connected to the outer surface of paper disc shaft;Outer shaft sleeve, coaxial sleeve is located at the outside of inner shaft sleeve, and outer shaft sleeve can occur radial displacement;Annular air bag, between outer shaft sleeve and inner shaft sleeve, annular air bag is equipped with the gas source interface for being communicated with compressed air source;Wherein, the outer shaft sleeve can be used to set tipping paper disc, when the annular air bag inflation expands, drive the radial expansion of outer shaft sleeve and form interference fit with the inner hole of tipping paper disc.Solve the problem of slow speed, low efficiency of paper rack in prior art during loading and unloading and fastening.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling technology for cigarette packaging machines, and in particular to a fastening device for cork paper trays and paper holders. Background Technology

[0002] The tipping paper supply tray fastening device for cigarette machines mainly consists of a paper tray frame, an automatic tipping paper overlapping device, a brake tipping paper tray fastening device, a tape dispenser, a paper magazine, a tipping paper feed roller, a pre-glue heater, and a post-glue heater.

[0003] In existing technology, the tipped paper tray is secured to a paper tray shaft by locking a nut. The pressure between the nut and the shaft maintains the tray's stability. The shaft is connected to the tray holder via bearings, allowing for free rotation and paper feeding. Loading and unloading the tray requires manually loosening the locking nut, placing the replacement tray on the shaft, and then tightening the nut. This manual loosening requires specialized tools, is slow, and inefficient. Furthermore, these locking nuts are prone to loosening during operation, posing a risk of instability. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a paper tray fastening device for cork paper trays, which solves the problems of slow loading and unloading speed and low efficiency of paper trays in the prior art.

[0005] This utility model solves the above-mentioned technical problems through the following technical means: a paper tray fastening device for cork paper trays, comprising: an inner bushing, which is fixedly connected to the outer surface of the paper tray shaft;

[0006] The outer bushing is coaxially positioned outside the inner bushing, and the outer bushing can undergo radial displacement.

[0007] An annular airbag is disposed between the outer bushing and the inner bushing, and the annular airbag is provided with an air source interface for connecting to a compressed air source.

[0008] The outer bushing can be used to fit a cork paper disc. When the annular airbag is inflated, it drives the outer bushing to expand radially and form an interference fit with the inner hole of the cork paper disc to fasten the cork paper disc.

[0009] Optionally, one end of the inner sleeve is provided with a flange, which is threadedly connected to the paper disc shaft, and the inner surface of the inner sleeve is keyed to the outer surface of the paper disc shaft.

[0010] Optionally, the outer bushing includes multiple sector-shaped blocks that are flexibly connected to each other.

[0011] Optionally, the annular airbag is bonded to the inner bushing and the outer bushing respectively.

[0012] Optionally, the paper disc shaft is provided with an air hole for communicating with a compressed air source, and the air hole is connected to the air source interface of the annular air bladder.

[0013] Optionally, on one side of the installation direction of the cork paper tray, a limiting bushing is also fixedly connected to the paper tray shaft. The paper tray shaft abuts against the inner bushing. Several limiting blocks are also circumferentially inserted into the limiting bushing. The bottom of the limiting block is provided with a cavity for accommodating the movement of the limiting block. A return spring is provided between the bottom of the cavity and the bottom of the limiting block. The cavity is connected to the air hole.

[0014] Optionally, the initial position of the limiting block is flush with the limiting bushing. After the compressed air source is connected, the limiting block extends outward and its side abuts against the end face of the outer bushing and the end face of the paper tray hole of the cork paper tray.

[0015] Optionally, it also includes a pressure relief solenoid valve and a pressure relief pipe; one end of the pressure relief pipe is used to communicate with the inner cavity of the annular airbag, and the other end is used to communicate with the atmosphere or an external negative pressure device; the pressure relief solenoid valve is installed on the pipeline of the pressure relief pipe.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes an inner bushing, an annular air bladder, and an outer bushing driven by a compressed air source. The outer bushing expands radially to form an interference fit with the inner hole of the tipping paper disc, thereby achieving radial tightening and a certain degree of axial tightening of the tipping paper disc. Simultaneously, compressed air enters the cavity through the air hole, pushing the limiting block outward to abut against the end face of the outer bushing and the end face of the paper disc hole (also known as the paper ring core, etc.) of the tipping paper disc. This, combined with the flange end face of the inner bushing, completes the axial physical limiting of the tipping paper disc, thus achieving high-speed and efficient tightening and loosening (loading and unloading) of the paper disc. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the cork paper tray of this utility model;

[0020] Figure 3 This is a schematic diagram of the outer bushing structure of this utility model;

[0021] Figure 4 This is a cross-sectional schematic diagram of the present invention;

[0022] Figure 5 yes Figure 4 A magnified view of a portion of point M in the middle.

[0023] Among them, 1-inner bushing, 11-flange, 2-outer bushing, 21-sector block, 3-annular airbag, 4-tip paper disc, 5-limiting bushing, 51-limiting block, 52-cavity, 53-reset spring, 6-paper disc shaft. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.

[0025] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.

[0026] like Figures 1-5 As shown, this utility model provides a paper tray fastening device, which includes an inner bushing 1, an outer bushing 2, and an annular air bladder 3. The inner bushing 1 is fixedly connected to the outer surface of the paper tray shaft 6. Specifically, one end of the inner bushing 1 is provided with a flange 11, which is threadedly connected to the paper tray shaft 6. The inner surface of the inner bushing 1 is keyed to the outer surface of the paper tray shaft 6.

[0027] In this embodiment, the outer bushing 2 is coaxially sleeved outside the inner bushing 1, and the outer bushing 2 can undergo radial displacement. Specifically, the outer bushing 2 includes multiple flexibly connected sector-shaped blocks 21. The annular airbag 3 is disposed between the outer bushing 2 and the inner bushing 1. The annular airbag 3 is provided with an air source interface for connecting to a compressed air source. When a fixed amount of compressed air is introduced into the annular airbag 3, it drives the outer bushing 2 to expand radially and form an interference fit with the inner hole of the cork paper tray 4. This achieves the fastening of the cork paper tray 4. Through the high-pressure compressed air, the inner bushing 1, the annular airbag 3, and the outer bushing 2 as a whole have a certain "rigidity," and the paper tray is fixed by the reaction force of deformation.

[0028] In this embodiment, to prevent the inner bushing 1, the annular airbag 3 and the outer bushing 2 from separating in the depressurization state, and to enhance the stability of the entire fastening device during pressurization, the annular airbag 3 is bonded to the inner bushing 1 and the outer bushing 2 respectively. For example, the inner ring surface of the annular airbag 3 is bonded to the outer surface of the inner bushing 1, and the outer ring surface is bonded to the inner surface of the fan-shaped block of the outer bushing 2.

[0029] In this embodiment, the paper tray shaft 6 is provided with an air hole for communicating with a compressed air source, and the air hole is connected to the air source interface of the annular air bladder 3. When installing the cork paper tray 4, the cork paper tray 4 can be placed outside the outer shaft sleeve 2. A fixed amount of compressed air is supplied to the annular air bladder 3 through an external compressed air source, causing the annular air bladder 3 to expand, thereby driving the outer shaft sleeve 2 to expand radially and form an interference fit with the inner hole of the cork paper tray 4. It should be understood that the external compressed air source will also be equipped with necessary existing equipment or components such as solenoid valves or check valves and air separation units, which will not be described in detail here.

[0030] In this embodiment, to further enhance the axial fastening of the cork paper tray 4 and prevent it from shaking during operation, a limiting sleeve 5 is fixedly connected to the paper tray shaft 6 on one side of the installation direction of the cork paper tray 4. The paper tray shaft 6 abuts against the inner sleeve 1. Several limiting blocks 51 are circumferentially inserted into the limiting sleeve 5. The bottom of the limiting block 51 is provided with a cavity 52 for accommodating the movement of the limiting block 51. A return spring 53 is provided between the bottom of the cavity 52 and the bottom of the limiting block 51. The cavity 52 is connected to the air hole. The initial position of the limiting block 51 is flush with the limiting sleeve 5. After the compressed air source is connected, the limiting block 51 extends outward and its side abuts against the end face of the outer sleeve 2 and the end face of the paper tray hole (also called the paper ring core, etc.) of the cork paper tray 4.

[0031] It should be understood that, in order to facilitate the installation and disassembly of the cork paper plate 4, when the device is in a depressurized state, the outer diameter of the outer bushing 2 is obviously smaller than the inner diameter of the paper plate hole of the cork paper plate 4, and the outer diameter of the limiting bushing 5 is also smaller than or equal to the outer diameter of the outer bushing in this state.

[0032] In some other embodiments, to further improve the pressure relief response speed, a pressure relief solenoid valve and a pressure relief pipe can also be provided. The pressure relief pipe can refer to the setting of the air hole in the paper disc shaft 6, with the same opening parallel to the inside of the paper disc shaft 6, or it can be externally placed according to the site conditions. One end of the pressure relief pipe is used to communicate with the inner cavity of the annular airbag 3, and the other end is used to communicate with the atmosphere or an external negative pressure device. The pressure relief solenoid valve is installed on the pipeline of the pressure relief pipe 10. The control of electrical components such as the pressure relief solenoid valve and the external negative pressure device can be integrated into the control cabinet of the existing cigarette machine, which will not be described in detail here.

[0033] The working principle of this utility model is as follows:

[0034] When using the fastening device of this utility model, when the compressed air source is cut off (or the positive pressure is switched to the negative pressure state), the outer diameter of the outer bushing 2 is smaller than the inner diameter of the paper plate hole of the cork paper plate 4 under the contraction traction of the annular air bladder 3. At the same time, the limiting block 51 is also kept in the initial state under the action of the return spring 53. The operator can easily put the cork paper plate 4 into the installation position of the outer bushing 2. When the compressed air source is connected (or the negative pressure is switched to the positive pressure state), after the annular air bladder 3 introduces a fixed amount of compressed air, it drives the outer bushing 2 to expand radially and form an interference fit with the inner hole of the cork paper plate 4, thereby realizing the radial fastening and a certain degree of axial fastening of the cork paper plate 4. At the same time, the compressed air enters the cavity 52 through the air hole, pushing the limiting block 51 out to the side and abutting against the end face of the outer bushing 2 and the end face of the paper plate hole (also called paper ring core, etc.) of the cork paper plate 4, thus completing the axial physical limiting of the cork paper plate 4.

[0035] During this process, due to the fast response of the valve controlling the compressed air source, the state switching speed of the annular airbag 3 and the limit block 51 is also fast, realizing high-speed and efficient fastening and loosening (loading and unloading) of the paper tray.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A fastening device for a cork paper tray holder, characterized in that, include: Inner bushing (1) is fixedly connected to the outer surface of paper tray shaft (6); The outer bushing (2) is coaxially disposed outside the inner bushing (1), and the outer bushing (2) can undergo radial displacement; An annular airbag (3) is disposed between the outer bushing (2) and the inner bushing (1), and the annular airbag (3) is provided with an air source interface for communicating with a compressed air source; The outer bushing (2) can be used to fit the cork paper disc (4). When the annular airbag (3) is inflated, it drives the outer bushing (2) to expand radially and form an interference fit with the inner hole of the cork paper disc (4) to fasten the cork paper disc (4).

2. The paper tray fastening device according to claim 1, characterized in that: One end of the inner bushing (1) is provided with a flange (11), the flange (11) is threadedly connected to the paper disc shaft (6), and the inner surface of the inner bushing (1) is keyed to the outer surface of the paper disc shaft (6).

3. The paper tray fastening device according to claim 1, characterized in that: The outer bushing (2) includes multiple sector blocks (21) that are flexibly connected to each other.

4. The paper tray fastening device according to claim 1, characterized in that: The annular airbag (3) is bonded to the inner bushing (1) and the outer bushing (2) respectively.

5. The paper tray fastening device according to claim 1, characterized in that: The paper disc shaft (6) is provided with an air hole for communicating with a compressed air source, and the air hole is connected to the air source interface of the annular air bag (3).

6. The paper tray fastening device according to claim 5, characterized in that: Located on one side of the installation direction of the cork paper tray (4), a limiting sleeve (5) is also fixedly connected to the paper tray shaft (6). The paper tray shaft (6) abuts against the inner sleeve (1). A number of limiting blocks (51) are also inserted circumferentially on the limiting sleeve (5). The bottom of the limiting block (51) is provided with a cavity (52) for accommodating the movement of the limiting block (51). A return spring (53) is provided between the bottom of the cavity (52) and the bottom of the limiting block (51). The cavity (52) is connected to the air hole.

7. The paper tray fastening device according to claim 6, characterized in that: The initial position of the limiting block (51) is flush with the limiting bushing (5). After the compressed air source is connected, the limiting block (51) extends outward and its side abuts against the end face of the outer bushing (2) and the end face of the paper plate hole of the cork paper plate (4).

8. The paper tray fastening device according to any one of claims 1-7, characterized in that: It also includes a pressure relief solenoid valve and a pressure relief pipe; one end of the pressure relief pipe is used to communicate with the inner cavity of the annular airbag (3), and the other end is used to communicate with the atmosphere or an external negative pressure device; the pressure relief solenoid valve is installed on the pipeline of the pressure relief pipe (10).

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