Latex storage mechanism for cigarette glue supply system

Abstract

The invention discloses a latex storage mechanism for a cigarette latex supply system, which relates to the technical field of cigarette production equipment and comprises a latex barrel, a flexible inner bag and a gravity extrusion component. The flexible inner bag is arranged in the glue barrel, and an input connector and an output connector are arranged at the bottom of the flexible inner bag and connected with an external glue injection pipeline and a glue supply pipeline respectively. The gravity extrusion assembly comprises a pressing plate and a guide rod, the pressing plate is arranged above the flexible inner bag, one end of the guide rod is connected with the pressing plate, and the other end penetrates through a guide hole in the top of the glue barrel; and the pressing plate moves downwards along the guide rod under the action of gravity to continuously extrude the flexible inner bag, so that the latex is stably discharged. In the using process, traditional air pressure driving is replaced with gravity driving, the problems of oxidation, caking and bubbles caused by the fact that latex makes contact with air are solved, and therefore the latex supply stability and continuity are improved, and the product quality is guaranteed.

Description

Technical Field

[0001] This application relates to the field of cigarette production equipment technology, specifically to a latex storage mechanism for a cigarette adhesive supply system. Background Technology

[0002] In cigarette production, latex, as a key adhesive material, directly affects the quality of cigarette joints, tipping paper application, and packaging. Currently, the industry's commonly used latex supply system typically includes an open or semi-open metal latex tank. To achieve stable latex delivery, this system relies on external compressed air: compressed air is continuously introduced into the upper space of the tank, and under the combined action of air pressure and the latex's own weight, the latex is forced into the delivery pipes, and finally pumped to various coating points by a glue pump.

[0003] However, this air-powered supply method has inherent drawbacks. First, prolonged contact between the latex and the incoming air causes the moisture in the latex to gradually evaporate and react with oxygen, leading to the formation of a skin or clumps on the surface and inside the latex. Second, under continuous pressure fluctuations, more air dissolves into the latex, forming tiny bubbles. These clumps and bubbles flow with the latex during the supply process and easily accumulate at pipe bends, valves, or filters, gradually causing poor flow or even complete blockage. Once the continuity of the latex supply is disrupted, it directly leads to a series of product quality defects such as uneven adhesive application, loose cigarette seams, or packaging detachment.

[0004] Therefore, this application proposes a latex storage mechanism for a cigarette adhesive supply system, which can eliminate the problems of latex oxidation and agglomeration and bubble dissolution caused by contact with air, ensure the long-term stability and continuity of the adhesive supply process, and achieve the effects of maintenance-free operation, improved product quality and reduced production losses. Summary of the Invention

[0005] The main objective of this application is to provide a latex storage mechanism for a cigarette latex supply system, in order to solve the problems of oxidation and agglomeration of latex and the dissolution of air bubbles caused by latex contact with air in traditional latex storage and supply methods.

[0006] To achieve the above objectives, this application provides the following technical solution: A latex storage mechanism for a cigarette adhesive supply system, comprising: The plastic bucket has an internal cavity for receiving contents. A flexible inner bag is provided inside the cavity of the glue bucket. The bottom of the flexible inner bag is provided with an input connector and an output connector. The input connector and the output connector are both installed in the through hole provided at the bottom and are respectively connected to the glue injection pipeline and the glue supply pipeline of the glue supply system. The gravity extrusion assembly includes a pressure plate and a guide rod. The pressure plate is disposed in the receiving cavity and located above the flexible inner bag. One end of the guide rod is vertically connected to the center of the top surface of the pressure plate, and the other end of the guide rod extends through a guide hole provided at the top of the glue bucket, so that the pressure plate can be displaced downward under the action of gravity and apply extrusion pressure to the latex inside by extruding the glue bag.

[0007] As a further improvement of this application, the glue bucket includes a cylindrical body and a cover that is detachably disposed on the top of the body; the cover is locked to the body by a fastening bolt screwed into the side wall of the body to resist the upward force that may be generated when the gravity extrusion assembly is in operation.

[0008] As a further improvement of this application, the pressure plate is a circular plate adapted to the contour of the inner wall of the cylinder, and its outer peripheral surface maintains a clearance fit with the inner wall of the cylinder to uniformly squeeze the flexible inner bag during descent; the guide hole is located in the middle of the cover, the guide rod passes through the guide hole, and the side wall of the guide rod and the inner wall of the guide hole are in clearance fit to limit the movement path of the pressure plate and prevent it from swaying.

[0009] As a further improvement of this application, the inner surface of the bottom of the cylinder is a conical surface that tapers downwards, and the lower surface of the pressure plate is a conical surface that matches the conical surface of the bottom of the glue bucket. When the pressure plate descends to the bottom of the glue bucket, the two conical surfaces cooperate to jointly squeeze the flexible inner bag to eliminate the residual space at its bottom, so as to avoid forming latex dead corners.

[0010] As a further improvement of this application, the input and output connectors at the bottom of the flexible inner bag are hollow cylindrical connectors integrally formed on the bag body; the outer wall of the hollow cylindrical connector is provided with external threads, and the inner wall is provided with internal threads; a hollow cylindrical interface is installed at the through hole at the bottom of the glue bucket, and the inner wall of the hollow cylindrical interface is provided with internal threads; the hollow cylindrical connector is detachably connected to the glue bucket by engaging its external threads with the internal threads of the hollow cylindrical interface; the hollow cylindrical connector is directly connected to the glue injection pipeline or glue supply pipeline of the glue supply system by its internal threads.

[0011] As a further improvement of this application, the latex storage mechanism for the cigarette glue supply system further includes a glue quantity detector, which is installed on the inner side of the cover and is used to detect the distance between the top surface of the pressure plate and the inner side of the cover. The glue quantity detector is configured to issue a glue replenishment prompt when the distance exceeds a first preset value, and to issue a stop glue replenishment prompt when the distance is less than a second preset value.

[0012] As a further improvement of this application, the latex storage mechanism for the cigarette adhesive supply system further includes a support; the support includes: a tray, columns, and connecting rods; the top of the tray is recessed to form a groove that matches the outer contour of the bottom of the cylinder, and the bottom surface of the tray is hollowed out at the position corresponding to the groove; at least three columns are arranged along the circumferential edge of the tray, the top of each column is fixedly connected to the tray, the bottom of each column is connected to one end of a connecting rod, and the other ends of all the connecting rods converge and connect at one point.

[0013] The technical solution provided in this application may include the following beneficial effects: This application fundamentally changes the latex extrusion principle by using a gravity extrusion assembly instead of the traditional pneumatic drive method. Since the pressure plate acts directly on the flexible inner bag under gravity, there is no need to inject compressed air into the glue tank, thus isolating the latex from air throughout the storage and discharge process. Gravity-based mechanical extrusion provides continuous and stable pressure output, helping to achieve uniform and controllable latex flow, thereby improving glue supply stability and reducing product quality problems caused by flow fluctuations. Furthermore, the independently replaceable flexible inner bag design eliminates the need to clean the rigid glue tank when changing latex, reducing the complexity and frequency of maintenance operations. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments 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.

[0015] Figure 1 This is a schematic diagram of a latex storage mechanism used in a cigarette adhesive supply system. Figure 2 yes Figure 1 Schematic diagram of the middle cylinder; Figure 3 yes Figure 1 Schematic diagram of the mid-support structure; Figure label: 1. Glue bucket; 11. Cylinder body; 11a. Through hole; 12. Cover body; 12a. Guide hole; 2. Flexible inner bag; 21. Input connector; 22. Output connector; 3. Gravity extrusion assembly; 31. Pressure plate; 32. Guide rod; 4. Bracket; 41. Pallet; 42. Column; 43. Connecting rod. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0017] Figure 1 This application illustrates an embodiment of a latex storage mechanism for a cigarette adhesive supply system, see [link to relevant documentation]. Figure 1 In this embodiment, the latex storage mechanism for the cigarette glue supply system includes: a glue tank 1, a flexible inner bag 2, and a gravity extrusion assembly 3.

[0018] Among them, see Figures 1 to 2 The glue bucket 1 has an internal cavity for accommodating the flexible inner bag 2. The flexible inner bag 2 is disposed within the internal cavity of the glue bucket 1. The bottom of the flexible inner bag 2 is provided with an input connector 21 and an output connector 22. Both the input connector 21 and the output connector 22 are installed in a through hole 11a at the bottom of the glue bucket 1 and are respectively connected to the external glue injection pipeline and the glue supply pipeline of the glue supply system. The gravity extrusion assembly 3 includes a pressure plate 31 and a guide rod 32. The pressure plate 31 is disposed within the cavity and positioned above the flexible inner bag 2. One end of the guide rod 32 is vertically connected to the center of the top surface of the pressure plate 31, and the other end of the guide rod 32 extends outward through a guide hole 12a at the top of the glue bucket 1. This allows the pressure plate 31 to move downward along the path defined by the guide rod 32 under its own gravity, continuously and uniformly extruding the flexible inner bag 2 to apply a stable extrusion pressure to the latex inside, thereby expelling the latex. By abandoning the traditional compressed air drive method, the oxidation, clumping, and increased air bubbles caused by latex contact with compressed air are fundamentally avoided, ensuring the stability and continuity of the latex supply process.

[0019] Optionally, the flexible inner bag 2 is made of polyethylene. This material has good flexibility, chemical stability, and low cost, can reliably form a sealed storage space, and is easy to replace after compression, enabling a maintenance-free design for the device.

[0020] Further, see Figures 1 to 2 The glue container 1 includes a cylindrical body 11 and a cover 12 detachably attached to the top of the body 11. The cover 12 is secured to the body 11 by at least one fastening bolt screwed into the side wall of the body 11. When the gravity-resistant compression assembly 3 is in operation, the guide rod 32 may transmit an upward force through the cover 12, ensuring that the cover 12 remains stable during long-term use and maintaining the sealing and structural integrity of the entire glue storage mechanism.

[0021] Optionally, one or more micropores are provided on the cover 12. These micropores allow gas to pass through extremely slowly, thereby balancing the air pressure inside and outside the cylinder 11 and preventing the formation of a local vacuum inside the cylinder 11 due to the descent of the pressure plate 31 or the discharge of latex, thus avoiding affecting the normal flow of latex. At the same time, the micropores can block most dust and significantly slow down the exchange rate between the internal latex and the outside air.

[0022] Further, see Figure 1 The pressure plate 31 is designed as a circular plate that conforms to the contour of the inner wall of the cylinder 11. Its outer circumference maintains an appropriate clearance fit with the inner wall of the cylinder 11, ensuring that the pressure plate 31 remains parallel to the inner wall of the cylinder 11 during descent. This allows for uniform pressure application to the flexible inner bag 2, preventing localized wrinkles or uneven stress on the inner bag due to pressure plate 31 misalignment. A guide hole 12a is located in the center of the cover 12, through which a guide rod 32 passes. The side wall of the guide rod 32 also has a clearance fit with the inner wall of the guide hole 12a. The pressure plate 31 and the guide rod 32 work together to strictly limit the movement path of the pressure plate 31, preventing horizontal swaying and ensuring the verticality and stability of the squeezing action.

[0023] Optionally, the mating edges of the cover 12 and the cylinder 11 are provided with mutually cooperating positioning bosses and grooves. When the cover 12 is fastened to the cylinder 11, the positioning bosses and grooves can achieve precise alignment, ensuring that the bolt holes on the cover 12 and the threaded holes on the side wall of the cylinder 11 are automatically aligned, which facilitates quick and accurate assembly and fastening.

[0024] Optionally, the guide hole 12a is located in the middle of the cover 12, so that the guiding force on the guide rod 32 is centered, further optimizing the movement stability of the pressure plate 31.

[0025] Optionally, a guide tube is fixedly installed at the guide hole 12a, through which the guide rod 32 passes. The guide tube can extend the guide length, improve the constraint accuracy of the guide rod 32, and further enhance the straightness of the movement trajectory of the pressure plate 31.

[0026] Further, see Figure 2 The inner surface of the bottom of the cylinder 11 is machined into a downward-convex surface. Correspondingly, the lower surface of the pressure plate 31 is also machined into an inverted conical surface that matches the conical surface. When the pressure plate 31 descends to the bottom of the cylinder 11 under the action of gravity, the conical surface of the lower surface of the pressure plate 31 gradually fits into the conical surface of the bottom of the cylinder 11, and together they perform the final stage of compression on the bottom of the flexible inner bag 2 located therebetween. This can minimize or even eliminate the residual space and residual latex at the bottom of the flexible inner bag 2, avoid the formation of latex dead corners, improve the utilization rate of latex, and prevent the residual latex from drying and hardening.

[0027] Optionally, a rounded corner can be provided at the junction of the bottom surface of the cylinder 11 and its side wall. Similarly, a rounded corner is also provided at the junction of the bottom surface of the pressure plate 31 and its side wall, which can reduce the local stress concentration that the flexible inner bag 2 may bear during the extrusion process, reduce the risk of the inner bag being scratched or torn, and extend its service life.

[0028] Further, see Figure 2 The input connector 21 and output connector 22 at the bottom of the flexible inner bag 2 are integrally formed hollow cylindrical connectors on the bag body. The outer wall of this hollow cylindrical connector is machined with external threads, and its inner wall is machined with internal threads. A hollow cylindrical interface is installed at the through hole 11a at the bottom of the glue bucket 1, and the inner wall of the hollow cylindrical interface is also machined with internal threads. During assembly, the flexible inner bag 2 is screwed into the corresponding internal thread of the hollow cylindrical interface at the bottom of the glue bucket 1 through the external thread of its hollow cylindrical connector, achieving a detachable and sealed connection with the glue bucket 1. Subsequently, the glue supply system's injection pipe or glue supply pipe can be directly connected to the internal thread of the inner wall of the hollow cylindrical connector via threads. This double-threaded structure achieves a double reliable connection and seal between the inner bag and the glue bucket 1, and between the inner bag and the external pipeline, simplifying the structure and facilitating quick replacement of the inner bag.

[0029] Optionally, the bottom of the glue container 1 is provided with two hollow cylindrical interfaces. One of them is located at or near the center of the bottom of the container 11 and is used to install the output connector 22, so that the latex can be collected and output under the action of gravity. The other is located on the side of the bottom of the container 11 and is used to install the input connector 21, so that the latex can be replenished from the side.

[0030] Furthermore, the latex storage mechanism may also include a latex quantity detector. The latex quantity detector is installed on the inner side of the cover 12 and is used for non-contact detection of the real-time distance between the top surface of the pressure plate 31 and the inner side of the cover 12. The latex quantity detector can be configured to: issue a latex replenishment warning signal when the detected distance value exceeds a first preset value (corresponding to insufficient latex); and issue a stop latex replenishment warning signal when the detected distance value is less than a second preset value (corresponding to full or excessive latex). This automated monitoring of the latex quantity reminds operators to add latex in a timely manner, avoiding production interruptions due to insufficient latex or overflow due to excessive latex addition.

[0031] Alternatively, the adhesive volume detector may employ an appropriate type from the existing technology, such as an ultrasonic sensor, an infrared sensor, or a laser rangefinder.

[0032] Optionally, the prompt signal can be implemented through audible and visual alarms, numerical prompts on the display screen, or communication linkage with a host computer.

[0033] It should be noted that the adhesive volume detector and its related signal indication circuits all employ mature existing technologies in the field and are not the focus of this embodiment. Their specific circuit structure and connection methods will not be elaborated here.

[0034] Further, see Figure 3 The latex storage mechanism also includes a support 4. The support 4 mainly consists of a tray 41, columns 42, and connecting rods 43. The top of the tray 41 is recessed to form a groove that matches the outer contour of the bottom of the cylinder 11, used to support and position the glue bucket 1. The bottom surface of the tray 41 is hollowed out at the position corresponding to the groove, providing space for the input / output interfaces and pipelines at the bottom of the glue bucket 1. At least three columns 42 are evenly distributed around the perimeter of the tray 41, with the top of each column 42 fixedly connected to the tray 41. The bottom end of each column 42 is hinged or fixedly connected to one end of a connecting rod 43, and the other ends of all connecting rods 43 converge inward and connect at one point, forming a stable support node. This provides stable support for the entire latex storage mechanism, allowing it to be placed stably on the equipment base or ground, and the hollow design facilitates maintenance of the bottom pipelines.

[0035] For example, the working principle or usage of a latex storage mechanism: First, place the empty flexible inner bag 2 into the glue tank 1, and screw the cylindrical connector at the bottom of the bag into the corresponding hollow cylindrical interface at the bottom of the glue tank 1 to complete the installation and sealing of the inner bag. Place the pressure plate 31 into the glue tank 1, allowing its guide rod 32 to pass through the guide hole 12a of the cover 12, and then cover the cover 12 and tighten it with the fastening bolts. Inject latex into the flexible inner bag 2 through the pipeline connected to the input connector 21. The latex fills the inner bag and pushes the pressure plate 31 upward. When glue supply is needed, open the valve on the pipeline of the output connector 22. The pressure plate 31 begins to move steadily downward under its own weight, evenly squeezing the flexible inner bag 2, so that the latex flows out continuously and stably from the output connector 22 under constant pressure and enters the subsequent glue supply system. When the glue level detector issues a glue replenishment prompt, the operator can inject latex again through the input connector 21, and the pressure plate 31 will rise accordingly, repeating the cycle.

[0036] In this embodiment, a relatively sealed latex storage and supply unit driven by gravity is constructed through the coordinated operation of the glue bucket 1, the flexible inner bag 2 with a specific structure, and the gravity extrusion component 3. This isolates the latex from contact with compressed air, solving the problems of oxidation, agglomeration, and increased air bubbles. The structure is simple and reliable, easy to maintain, and improves the stability and continuity of latex supply during cigarette production, thereby ensuring product quality.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A latex storage mechanism for a cigarette adhesive supply system, characterized in that, include: The plastic bucket has an internal cavity for receiving contents. A flexible inner bag is provided inside the cavity of the glue bucket. The bottom of the flexible inner bag is provided with an input connector and an output connector. The input connector and the output connector are both installed in the through hole provided at the bottom and are respectively connected to the glue injection pipeline and the glue supply pipeline of the glue supply system. The gravity extrusion assembly includes a pressure plate and a guide rod. The pressure plate is disposed in the receiving cavity and located above the flexible inner bag. One end of the guide rod is vertically connected to the center of the top surface of the pressure plate, and the other end of the guide rod extends through a guide hole provided at the top of the glue bucket, so that the pressure plate can be displaced downward under the action of gravity and apply extrusion pressure to the latex inside by extruding the glue bag.

2. The latex storage mechanism for a cigarette adhesive supply system according to claim 1, characterized in that, The glue bucket includes a cylindrical body and a cover that is detachably placed on top of the body; the cover is locked to the body by a fastening bolt screwed into the side wall of the body to resist the upward force that may be generated when the gravity extrusion assembly is in operation.

3. The latex storage mechanism for a cigarette adhesive supply system according to claim 2, characterized in that, The pressure plate is a circular plate that is adapted to the contour of the inner wall of the cylinder. Its outer circumferential surface is in clearance fit with the inner wall of the cylinder to uniformly compress the flexible inner bag during descent. The guide hole is located in the middle of the cover. The guide rod passes through the guide hole, and the side wall of the guide rod is in clearance fit with the inner wall of the guide hole to limit the movement path of the pressure plate and prevent it from swaying.

4. The latex storage mechanism for a cigarette adhesive supply system according to claim 2, characterized in that, The inner surface of the bottom of the cylinder is a downward-convex conical surface, and the lower surface of the pressure plate is a conical surface that matches the conical surface of the bottom of the glue bucket. When the pressure plate descends to the bottom of the glue bucket, the two conical surfaces cooperate to squeeze the flexible inner bag together to eliminate the residual space at the bottom and avoid forming latex dead corners.

5. The latex storage mechanism for a cigarette adhesive supply system according to claim 1, characterized in that, The input and output connectors at the bottom of the flexible inner bag are integrally formed hollow cylindrical connectors on the bag body; the outer wall of the hollow cylindrical connector is provided with external threads, and the inner wall is provided with internal threads; a hollow cylindrical interface is installed at the through hole at the bottom of the glue bucket, and the inner wall of the hollow cylindrical interface is provided with internal threads; the hollow cylindrical connector is detachably connected to the glue bucket by engaging its external threads with the internal threads of the hollow cylindrical interface; the hollow cylindrical connector is directly connected to the glue injection pipeline or glue supply pipeline of the glue supply system by its internal threads.

6. The latex storage mechanism for a cigarette adhesive supply system according to claim 2, characterized in that, It also includes an adhesive quantity detector, which is installed on the inner side of the cover and is used to detect the distance between the top surface of the pressure plate and the inner side of the cover. The adhesive quantity detector is configured to issue a prompt that adhesive needs to be added when the distance exceeds a first preset value, and to issue a prompt to stop adding adhesive when the distance is less than a second preset value.

7. The latex storage mechanism for a cigarette adhesive supply system according to claim 1, characterized in that, It also includes a support frame; the support frame includes: a tray, columns, and connecting rods; the top of the tray is recessed to form a groove that matches the outer contour of the bottom of the cylinder, and the bottom surface of the tray is hollowed out at the position corresponding to the groove; at least three columns are arranged along the circumferential edge of the tray, the top of each column is fixedly connected to the tray, the bottom of each column is connected to one end of a connecting rod, and the other ends of all the connecting rods converge and connect at one point.

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