A glue extrusion device

Abstract

The application relates to the field of fluid extrusion, in particular to a glue extrusion device which comprises a glue bucket, a bottom cover, a film assembly and an extrusion push rod, the bottom of the glue bucket is provided with an opening, the bottom cover is connected with the opening at the bottom of the glue bucket, the bottom cover is provided with a supporting cylinder extending to the inside of the glue bucket, the film assembly covers the opening at the bottom of the glue bucket and is attached to one end of the supporting cylinder, the film assembly is provided with cross marks, the extrusion push rod can extend into the glue bucket to press the glue, the film assembly is broken at the cross marks, and the thickness of the film assembly, the processing mode of the cross marks, the connecting mode of the bottom cover and the glue bucket and the like are limited. The application achieves the technical effects that the glue extrusion can be effectively controlled when the glue needs to be extruded, the glue can be well stored, and the installation and use are convenient.

Description

Technical Field

[0001] This application relates to the field of fluid extrusion, and more particularly to an adhesive extrusion apparatus. Background Technology

[0002] Currently, glue storage and dispensing technology is widely used in industrial production, especially in high-precision manufacturing fields requiring precise control of glue flow. Traditional glue bucket dispensing devices typically employ simple valves or sealing caps, but these structures often suffer from incomplete sealing when the cap is opened for dispensing, leading to glue leakage. With increasing environmental requirements and demands for higher production efficiency, higher demands are placed on the sealing and controllability of glue dispensing devices. In recent years, some improvements have attempted to address leakage by adding complex mechanical structures or electronic control systems, but these solutions are often costly and complex to maintain, making them unsuitable for large-scale production.

[0003] In existing technologies, common solutions for discharging glue buckets include the following: First, using a threaded sealing cap, which achieves a seal by tightening the cap, but leakage may still occur during opening; second, using an elastic sealing ring, which relies on elastic deformation to achieve a seal, but is prone to aging and failure after long-term use; third, using a solenoid valve or pneumatic valve to control the discharge, which offers good controllability but is costly and requires external power support. Each of these solutions has its advantages and disadvantages: the threaded sealing cap has a simple structure but insufficient sealing performance; the elastic sealing ring has good initial performance but poor durability; and the solenoid valve offers precise control but is expensive.

[0004] The main drawback of existing technology is that it cannot completely prevent glue leakage when the lid is opened to prepare for discharging, especially during the time gap before the receiving device is fully connected. The lack of an effective sealing structure leads to glue waste and pollution of the production environment. In addition, the discharging control precision of existing technology is insufficient, making it difficult to achieve a controllable process of "discharging upon application of pressure," which affects production efficiency. Utility Model Content

[0005] The purpose of this application is to provide an adhesive extrusion device.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: an adhesive extrusion device, comprising an adhesive bucket, a bottom cover, a film assembly, and an extrusion pusher; the bottom of the adhesive bucket has an opening; the bottom cover is connected to the opening at the bottom of the adhesive bucket, and a support cylinder extending into the interior of the adhesive bucket is provided at the center of the bottom cover; the film assembly covers the opening at the bottom of the adhesive bucket, and the side of the film assembly away from the interior of the adhesive bucket is attached to the end of the support cylinder away from the bottom cover; the film assembly has cross-shaped scratches; the extrusion pusher can extend into the adhesive bucket to apply pressure to the adhesive in the adhesive bucket to cause the film assembly to rupture at the cross-shaped scratches.

[0007] By adopting the above technical solution, in the closed state, the supporting cylinder of the bottom cover fits tightly with the film assembly, effectively supporting the film and preventing the adhesive from leaking due to internal pressure breaking through the film during stirring. During the opening process, the film itself remains intact, ensuring that the adhesive does not leak quickly when the cover is opened. Only when pressure is applied by the extrusion pusher will the film precisely rupture along the cross-shaped scratch, achieving reliable control of "no flow without pressure". This structure not only avoids adhesive waste and environmental pollution when the cover is opened, but also improves the discharge accuracy and production efficiency through the controllable process of "discharge upon pressure". At the same time, the overall structure does not require complex external power or electronic components, the film assembly has simple processing technology and low material requirements, reducing the cost of the device. Moreover, the film thickness can be adjusted according to the adhesive characteristics, further enhancing the applicability and reliability of the device and making it more suitable for large-scale production needs.

[0008] Optionally, the thickness of the thin film assembly is 0.1mm-0.3mm.

[0009] By adopting the above technical solution, the film assembly uses a thickness of 0.1mm-0.3mm, which ensures that the film has sufficient structural strength. When the cover is closed, it works with the supporting cylinder of the bottom cover to stably withstand the internal pressure generated during glue mixing, preventing premature film breakage and leakage. It also ensures that when the set pressure is applied by the extrusion pusher, it breaks precisely and smoothly along the cross-shaped scratch, realizing a controllable process of material discharge upon pressure application. At the same time, this thickness range can be flexibly adjusted according to the viscosity, strength and other characteristics of the glue. This allows the film to prevent rapid glue leakage when the cover is open by its own structural strength, and to reliably respond to pressure to trigger rupture when material discharge is required. This further improves the device's adaptability to different types of glue and the reliability of sealing and material discharge control. Moreover, the moderate thickness facilitates mass production through simple processes such as injection molding or welding, which helps control costs and adapt to the needs of large-scale production.

[0010] Optionally, the cross-shaped scratches on the thin film assembly are formed by laser cutting or ultrasonic welding after pre-reserving a thin area through injection molding.

[0011] By adopting the above technical solutions, the injection molding pre-reserved thin area provides a uniform and stable substrate foundation for the processing of cross-shaped scratches, ensuring accurate preset material thickness at the scratch location. Combined with laser cutting or ultrasonic welding processes, the depth, length, and shape consistency of the cross-shaped scratches can be precisely controlled, avoiding premature breakage or difficulty in rupture of the film under non-pressure conditions due to scratch processing deviations. The high precision of laser cutting ensures neat scratch edges, while ultrasonic welding strengthens the connection stability between the scratch area and the film body during processing. This allows the film to be stably sealed by the supporting cylinder when the cap is closed, preventing glue leakage during stirring or standing, and to maintain structural integrity after the cap is opened to prevent rapid glue outflow. It only breaks precisely along the cross-shaped scratches when the set pressure is applied by the extrusion pusher, achieving reliable pressure-based material discharge control. At the same time, this processing technology is mature and efficient, suitable for mass production, ensuring the consistency and stability of film components, reducing production errors, further adapting to the needs of large-scale production, and improving the overall reliability and economy of the equipment.

[0012] Optionally, the inner wall of the bottom cover is provided with internal threads, and the outer wall of the bottom opening of the glue bucket is provided with external threads. The bottom cover and the glue bucket are connected by the cooperation of the internal and external threads.

[0013] By adopting the above technical solution, the threaded connection between the bottom cover and the glue bucket can achieve a tight and stable fixation, ensuring that the support cylinder at the center of the bottom cover can accurately fit the film assembly, providing continuous and stable support for the film and effectively preventing glue leakage caused by support failure due to loose connection. At the same time, the threaded connection structure is simple and easy to disassemble and assemble, which is convenient for filling the glue bucket with glue and installing the film assembly before production, and also facilitates subsequent maintenance or replacement of the film assembly, improving the ease of use of the device. Compared with the connection method in the prior art that requires external power, this threaded connection does not require additional power support, reducing the complexity and cost of the device. Moreover, the sealing performance of the threaded fit can further enhance the overall sealing performance at the connection between the bottom cover and the glue bucket, reducing the possibility of glue leakage from the connection gap. Together with the film assembly, it forms a double protection, ensuring that the glue will not leak due to stirring or standing when the lid is closed, and that the integrity of the film can be guaranteed by the stable connection during the opening process, until the extrusion push rod applies pressure to make the film rupture and discharge, further improving the sealing reliability and operational stability of the device, and making it more suitable for the operational needs of large-scale production.

[0014] Optionally, when the bottom cover is tightened to the glue bucket, the end of the supporting cylinder away from the bottom cover is fully attached to the film assembly to support the film assembly.

[0015] By adopting the above technical solution, when the bottom cover is tightened with the glue bucket, the end of the supporting cylinder away from the bottom cover is completely in contact with the film assembly, which can provide uniform and stable support for the film. This avoids deformation or damage to the film when the lid is closed (such as when internal pressure is generated during glue mixing) due to insufficient local force, thus reliably preventing glue leakage. This tight fit also strengthens the sealing fit between the film and the bottom opening of the glue bucket, ensuring that the film remains intact to block glue flowout, regardless of whether the glue bucket is stationary or moving, before the extrusion force is applied. This provides a safe gap for subsequent opening operations. Even if the receiving device is not fully connected after the lid is opened, the film can still rely on its own structure and the stable support base formed when the lid is closed to prevent glue from leaking quickly. Only when the extrusion push rod applies pressure will the film precisely break along the cross-shaped scratch, effectively realizing a controllable process of "no flow without pressure". This further improves the reliability of the device in the entire process of lid sealing, lid opening transition and material discharge control, reduces glue waste and environmental pollution, and ensures production efficiency.

[0016] Optionally, the outer diameter of the extrusion push rod is smaller than the inner diameter of the glue bucket, and the extrusion push rod can move axially along the glue bucket to apply pressure to the glue inside the glue bucket.

[0017] By adopting the above technical solution, the outer diameter of the extrusion pusher is smaller than the inner diameter of the glue bucket, ensuring that the pusher can move smoothly along the axial direction of the glue bucket without jamming. This facilitates precise control of the timing and stroke of pressure application by operators or automated equipment. The axial movement allows the pusher to apply uniform and direct pressure to the glue in the glue bucket, avoiding pressure dispersion that could prevent the film assembly from rupturing precisely at the cross-shaped scratches. This ensures that pressure is efficiently transmitted to the film, guaranteeing the controllability of "pressure-based discharge." At the same time, this structural design eliminates the need for complex guide or transmission components, simplifying the overall structure of the device and reducing production and maintenance costs. Furthermore, the smooth movement of the pusher, combined with the sealing effect of the film assembly, does not interfere with the integrity of the film when no pressure is applied. This further ensures that the glue will not leak prematurely due to the presence of the pusher when the lid is opened. The film rupture is only triggered when the pusher actively applies pressure, effectively improving the reliability and ease of operation of discharge control, and meeting the high-efficiency operation requirements of large-scale production.

[0018] Optionally, the film assembly is fixed to the opening at the bottom of the glue bucket by bonding, and the edge of the film assembly is sealed to the edge of the opening at the bottom of the glue bucket.

[0019] By adopting the above technical solution, the film assembly is fixed to the bottom opening of the glue tank by bonding, which is simple to operate and has a solid connection, facilitating efficient assembly in mass production. At the same time, the sealing fit between its edge and the opening edge can completely prevent the possibility of glue leakage from the connection gap between the film and the glue tank. Combined with the support of the bottom cover support cylinder for the film, the overall sealing performance can be further enhanced when the lid is closed, preventing glue from breaking through the film during stirring. Even after the lid is opened, the stability of the bonding and the reliability of the edge seal can still ensure that the film remains intact, preventing glue from leaking from the edge or the film body in advance. The film will only precisely break along the cross-shaped scratch when pressure is applied by the extrusion pusher, achieving strict control of "no leakage without pressure". This fixing and sealing method does not require a complex connection structure, which reduces the assembly difficulty and ensures the durability of the seal, further improving the sealing reliability of the device under different operating conditions, reducing glue waste and environmental pollution, and meeting the high efficiency and stability requirements of large-scale production.

[0020] Optionally, the cross-shaped scratch on the film assembly is located at the center of the film assembly, and the center of the cross-shaped scratch is collinear with the axis of the supporting cylinder.

[0021] By adopting the above technical solution, the cross-shaped scratch on the membrane module is located in the center and is collinear with the axis of the supporting cylinder. This allows the supporting force of the supporting cylinder on the membrane to be concentrated on the area around the scratch, ensuring uniform force on the membrane when the cover is closed. This prevents premature membrane breakage during stirring or settling due to insufficient local support, effectively enhancing the sealing reliability when the cover is closed. At the same time, this alignment design allows the central area of ​​the membrane to maintain structural integrity after the cover is opened, relying on the stable support provided by the supporting cylinder. This prevents accidental leakage of adhesive from the central scratch when no pressure is applied. When the extrusion pusher applies pressure axially, the pressure can be accurately transmitted to the cross-shaped scratch that is collinear with the axis, causing the membrane to break symmetrically and completely along the scratch. This ensures concentrated discharge direction and stable flow, avoiding uneven breakage or discharge deviation caused by scratch offset. This further improves the controllability and accuracy of "discharge upon pressure application". Combined with the sealing fit of the membrane edge, this reduces adhesive waste and environmental pollution, and enhances the operational stability and efficiency of the device in large-scale production.

[0022] In summary, this application has at least the following beneficial effect: 1. In the closed state, the supporting cylinder of the bottom cover fits tightly with the film assembly, effectively supporting the film and preventing the adhesive from leaking due to internal pressure breaking through the film during stirring. During the opening process, the film itself remains intact, ensuring that the adhesive does not leak rapidly when the lid is opened. Only when pressure is applied by the extrusion pusher will the film precisely rupture along the cross-shaped scratches, achieving reliable control of "no flow without pressure". This structure avoids adhesive waste and environmental pollution when the lid is opened, and improves the discharge accuracy and production efficiency through the controllable process of "discharge upon pressure". At the same time, the overall structure does not require complex external power or electronic components, the film assembly has simple processing technology and low material requirements, reducing the cost of the device. Moreover, the film thickness can be adjusted according to the characteristics of the adhesive, further enhancing the applicability and reliability of the device and making it more suitable for large-scale production needs.

[0023] 2. When the bottom cover is tightened with the glue bucket, the end of the support cylinder furthest from the bottom cover is fully in contact with the film assembly, providing uniform and stable support for the film. This prevents deformation or damage to the film when the lid is closed (such as when internal pressure is generated during glue mixing) due to insufficient local force, thus reliably preventing glue leakage. This tight fit also strengthens the sealing between the film and the bottom opening of the glue bucket, ensuring that the film remains intact to block glue flow, regardless of whether the glue bucket is stationary or moving, before the extrusion force is applied. This provides a safe gap for subsequent opening operations. Even if the receiving device is not fully connected after the lid is opened, the film can still rely on its own structure and the stable support base formed when the lid is closed to prevent rapid glue leakage. Only when the extrusion push rod applies pressure will the film precisely rupture along the cross-shaped scratch, effectively achieving a controllable process of "no flow without pressure." This further improves the reliability of the device in the entire process of lid sealing, lid opening transition, and material discharge control, reducing glue waste and environmental pollution, and ensuring production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a glue extrusion device; Figure 2 This is a cross-sectional view of an adhesive extrusion device; Figure 3 This is an exploded view of a glue extrusion device. Figure 4 This is a diagram showing the location of the cross-shaped scratches; Figure 5 This is a structural diagram of the bottom cover; Figure Labels 1. Glue bucket; 2. Bottom cover; 3. Film assembly; 4. Extrusion push rod; 5. Opening; 6. Support cylinder; 7. Cross-shaped scratch. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] In this embodiment, refer to Figures 1-5 An adhesive extrusion device includes an adhesive bucket 1, a bottom cover 2, a film assembly 3, and an extrusion pusher 4. The bottom cover 2 is threadedly connected to the bottom opening 5 of the adhesive bucket 1 to form a sealed space. The film assembly 3 covers the bottom opening 5 of the adhesive bucket 1 and is supported by the supporting cylinder 6 at the center of the bottom cover 2. The extrusion pusher 4 can extend into the adhesive bucket 1 to apply pressure to the adhesive, which effectively avoids adhesive leakage and can accurately control the discharge. This is because the threaded connection between the bottom cover 2 and the adhesive bucket 1 ensures a seal, the support cylinder 6 prevents the adhesive from breaking through the film when no pressure is applied, and the pressure applied by the extrusion pusher 4 can cause the film assembly 3 to precisely break and discharge at the cross-shaped scratch 7.

[0027] Specifically, the glue bucket 1 has an opening 5 at the bottom. The glue bucket 1 is generally made of plastic or metal, is cylindrical, and has a certain wall thickness and strength to withstand the weight and pressure of the glue. Plastic glue buckets 1 are lighter, less expensive, and more corrosion-resistant; metal glue buckets 1 are more robust and durable, and can withstand greater pressure. The opening 5 of the glue bucket 1 is located at the bottom for easy glue dispensing.

[0028] Specifically, the bottom cover 2 is connected to the opening 5 at the bottom of the glue bucket 1, and a supporting cylinder 6 extending into the glue bucket 1 is provided at the center of the bottom cover 2. The bottom cover 2 is usually made of plastic or metal, matching the material of the glue bucket 1. Preferably, the inner wall of the bottom cover 2 has internal threads, and the outer wall of the opening 5 at the bottom of the glue bucket 1 has external threads. The two are connected by the engagement of the internal and external threads. When the bottom cover 2 is tightened to the glue bucket 1, the end of the supporting cylinder 6 away from the bottom cover 2 is completely fitted with the film assembly 3 to support the film assembly 3. The diameter and height of the supporting cylinder 6 are determined according to the size of the glue bucket 1 and the film assembly 3. It can be connected to the bottom cover 2 in an integral molding manner, or it can be fixed to the bottom cover 2 by welding, bonding, or other methods. For example, in the design of some small glue buckets 1, the supporting cylinder 6 and the bottom cover 2 are integrally injection molded from plastic, which is efficient and low-cost; while in large glue buckets 1 or in cases where high strength is required, the supporting cylinder 6 can be made of metal and welded to the metal bottom cover 2.

[0029] Specifically, the film assembly 3 covers the opening 5 at the bottom of the glue container 1, and the side of the film assembly 3 away from the inside of the glue container 1 is attached to the end of the supporting cylinder 6 away from the bottom cover 2. The film assembly 3 is generally made of a plastic film with a certain degree of flexibility and strength, such as polyethylene or polypropylene. The thickness of the film assembly 3 is 0.1mm-0.3mm, which can be adjusted according to the strength of the adhesive. If the adhesive has high viscosity and high pressure, a thicker film can be selected; conversely, a thinner film can be selected. The film assembly 3 has a cross-shaped scratch 7, which is located at the center of the film assembly 3, and the center of the cross-shaped scratch 7 is collinear with the axis of the supporting cylinder 6. The cross-shaped scratch 7 of the film assembly 3 is formed by laser cutting or ultrasonic welding after pre-reserving a thin area through injection molding. This processing method can ensure the accuracy and consistency of the cross-shaped scratch 7, so that the film assembly 3 can accurately break at the cross-shaped scratch 7 when subjected to the pressure of the extrusion push rod 4. The film assembly 3 is fixed to the opening 5 at the bottom of the glue bucket 1 by bonding, and the edge of the film assembly 3 is sealed to the edge of the opening 5 at the bottom of the glue bucket 1. It can be fixed and sealed by means of adhesive bonding, hot pressing, etc.

[0030] Specifically, the extrusion pusher 4 extends into the glue container 1 to apply pressure to the glue inside, causing the film assembly 3 to rupture at the cross-shaped scratch 7. The extrusion pusher 4 is typically a cylindrical rod-shaped structure with an outer diameter smaller than the inner diameter of the glue container 1, allowing it to move axially along the glue container 1 to apply pressure to the glue inside. The extrusion pusher 4 can be made of materials such as metal or plastic. If frequent operation is required, using metal ensures strength and wear resistance; if cost control is more stringent, plastic can be used. The end of the extrusion pusher 4 can be designed as a flat or spherical surface for better pressure application to the glue.

[0031] The implementation principle of this embodiment is as follows: When the receiving device is not connected, the bottom cover 2 is tightened to the bottom of the glue tank 1, and the supporting cylinder 6 supports the film assembly 3. Even if the glue in the glue tank 1 has a certain pressure, it will not break the film assembly 3, thereby avoiding glue leakage and reducing material waste and equipment pollution. After the receiving device is connected, the extrusion push rod 4 is inserted into the glue tank 1 to apply pressure to the glue. Since the film assembly 3 has cross-shaped scratches 7, when the pressure reaches a certain level, the film assembly 3 will precisely break at the cross-shaped scratches 7, and the glue will flow out in a direction, realizing a controllable process of "pressure-based material discharge". Moreover, the thickness of the film assembly 3 and the design of the cross-shaped scratches 7 can be adjusted according to the glue strength. The processing technology is simple, the material has no special requirements, it is suitable for mass production, and reduces the overall cost of the device.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A glue extrusion device, characterized in that, The device includes a glue bucket (1), a bottom cover (2), a film assembly (3), and a pressing rod (4); the glue bucket (1) has an opening (5) at the bottom; the bottom cover (2) is connected to the opening (5) at the bottom of the glue bucket (1), and the center of the bottom cover (2) has a supporting cylinder (6) extending into the glue bucket (1); the film assembly (3) covers the opening (5) at the bottom of the glue bucket (1), and the side of the film assembly (3) away from the inside of the glue bucket (1) is attached to the end of the supporting cylinder (6) away from the bottom cover (2); the film assembly (3) has a cross-shaped scratch (7); the pressing rod (4) can extend into the glue bucket (1) to apply pressure to the glue in the glue bucket (1) to cause the film assembly (3) to break at the cross-shaped scratch (7).

2. The glue extrusion device according to claim 1, characterized in that, The thickness of the thin film component (3) is 0.1mm-0.3mm.

3. The glue extrusion device according to claim 1, characterized in that, The cross-shaped scratches (7) on the thin film assembly (3) are formed by laser cutting or ultrasonic welding after the thin area is reserved by injection molding.

4. The glue extrusion device according to claim 1, characterized in that, The inner wall of the bottom cover (2) is provided with an internal thread, and the outer wall of the bottom opening (5) of the glue bucket (1) is provided with an external thread. The bottom cover (2) and the glue bucket (1) are connected by the cooperation of the internal thread and the external thread.

5. The glue extrusion device according to claim 1, characterized in that, When the bottom cover (2) is tightened with the glue bucket (1), the end of the support cylinder (6) away from the bottom cover (2) is completely attached to the film assembly (3) to support the film assembly (3).

6. The glue extrusion apparatus according to claim 1, characterized in that, The outer diameter of the extrusion push rod (4) is smaller than the inner diameter of the glue bucket (1), and the extrusion push rod (4) can move along the axial direction of the glue bucket (1) to apply pressure to the glue in the glue bucket (1).

7. The glue extrusion apparatus according to claim 1, characterized in that, The film assembly (3) is fixed to the opening (5) at the bottom of the glue bucket (1) by bonding, and the edge of the film assembly (3) is sealed to the edge of the opening (5) at the bottom of the glue bucket (1).

8. The glue extrusion apparatus according to claim 1, characterized in that, The cross-shaped scratch (7) on the thin film assembly (3) is located at the center of the thin film assembly (3), and the center of the cross-shaped scratch (7) is collinear with the axis of the supporting cylinder (6).

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