Adjustable pressure stabilizing device for dispensing channel

Abstract

This utility model relates to an adjustable pressure stabilizing device suitable for dispensing channels, comprising a device body, a docking cover installed at the bottom of the device body, a pressure stabilizing chamber formed between the docking cover and the device body, a pressure stabilizing hole on the docking cover, and a pressure regulating component installed inside the pressure stabilizing chamber; a transmission mechanism installed inside the device body, the lower end of the transmission mechanism being connected to the pressure regulating component, and an adjustable pressure applying component installed above the transmission mechanism on the device body; the adjustable pressure applying component includes an adjusting block threadedly connected to the device body, and a buffer mechanism installed at the lower end of the adjusting block, which contacts the transmission mechanism. Thus, through the threaded adjusting block and the spring buffer mechanism, linear pressure regulation of the transmission mechanism can be achieved, and the pressure regulating diaphragm adopts an elastic structure that is thin in the middle and thick at the edges, enabling sensitive response to changes in fluid pressure within the pressure stabilizing chamber.

Description

Technical Field

[0001] This utility model relates to a pressure stabilizing device during the dispensing of adhesive in a dispensing machine, and more particularly to an adjustable pressure stabilizing device suitable for dispensing channels. Background Technology

[0002] In dispensing processes for electronics manufacturing and semiconductor packaging, the stability of adhesive volume directly affects key quality indicators such as bond strength and sealing performance. Pressure control within the dispensing channel is crucial for ensuring uniform adhesive distribution. To address the inconsistent adhesive volume caused by pressure fluctuations in traditional dispensing processes, various pressure regulating devices have been developed. These devices use mechanical structures or pneumatic controls to regulate the adhesive pressure, adapting to the application requirements of different workpieces and adhesive types.

[0003] Traditional adhesive supply systems typically use a pressure plate pump directly connected to the dispensing valve via a long adhesive hose, such as the dispensing pressure stabilizing device and dispensing equipment disclosed in CN218742890U. However, uneven pressure in the pipeline leads to fluctuations in the adhesive dispensing thickness, making it difficult to meet precision dispensing requirements. To improve this problem, existing technologies have proposed pressure stabilizing chamber structures, such as CN208482727U, which discloses an automatic dispensing pressure compensation device and dispensing equipment. This device dynamically adjusts the pressure inside the barrel using a proportional valve to compensate for changes in adhesive viscosity. However, this solution relies on air circuit control and cannot adapt to interfaces of different dispensing channel specifications.

[0004] Furthermore, CN114749331A discloses a high-precision pressure-stabilized dispensing device, which attempts to achieve closed-loop pressure stabilization by installing a pressure sensor inside the dispensing channel. However, its pressure stabilizing chamber and dispensing channel are fixedly connected, requiring complete disassembly for maintenance. In addition, the fixed structure at the edge of its pressure regulating diaphragm is prone to displacement due to high-frequency deformation, affecting sealing performance and response sensitivity. Meanwhile, CN218742890U discloses a magnetic ring pressure-block type pressure stabilizing device that can isolate gas and colloid, but its pressure block movement relies on linear bearings, and long-term friction leads to a decrease in transmission accuracy; moreover, it lacks a buffer mechanism to cope with sudden pressure changes.

[0005] In summary, existing dispensing and voltage regulation technologies have three main drawbacks: first, poor interface compatibility, with traditional devices struggling to accommodate voltage regulation interfaces of different thread specifications; second, insufficient dynamic response, as the edge-fixing method of the voltage regulation diaphragm easily leads to sealing failure and response delay; and third, the transmission mechanism is prone to wear, and the lack of friction optimization and buffer design affects long-term stability. This device aims to specifically address these shortcomings.

[0006] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create an adjustable voltage regulator suitable for dispensing channels, making it more valuable for industrial applications. Utility Model Content

[0007] To solve the above-mentioned technical problems, the purpose of this utility model is to provide an adjustable voltage regulator suitable for dispensing channels.

[0008] This utility model discloses an adjustable pressure stabilizing device for dispensing channels, comprising a device body, wherein: a docking cover is installed at the bottom of the device body, a pressure stabilizing chamber is formed between the docking cover and the device body, a pressure stabilizing hole is formed on the docking cover, and a pressure regulating component is installed in the pressure stabilizing chamber; a transmission mechanism is installed inside the device body, the lower end of the transmission mechanism is connected to the pressure regulating component, and an adjustable pressure applying component is installed at the upper end of the device body above the transmission mechanism; the adjustable pressure applying component includes an adjusting block threadedly connected to the device body, a buffer mechanism is installed at the lower end of the adjusting block, and the buffer mechanism is in contact with the transmission mechanism.

[0009] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, the voltage regulating component includes a voltage regulating diaphragm horizontally placed in the voltage regulating chamber, the edge of the voltage regulating diaphragm being sealed to the voltage regulating chamber, and a plurality of grommets being installed on the docking cover, one end of each grommet abutting against the edge of the voltage regulating diaphragm.

[0010] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, sealant is distributed between the edge of the voltage regulating diaphragm and the voltage regulating chamber; the thickness of the middle of the voltage regulating diaphragm is less than the thickness of its edge.

[0011] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, the transmission mechanism includes a guide rod, a pressure plate mounted on the lower end of the guide rod, and a connecting post extending from the upper end of the guide rod.

[0012] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, the lower end of the adjusting block has a receiving channel, and a buffer mechanism is installed in the receiving channel. The buffer mechanism includes a spring, and a guide seat is installed at the lower end of the spring, with the guide seat in contact with the guide rod.

[0013] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, the guide seat has a mating groove distributed below it, the upper end of the guide rod is inserted into the mating groove, a limiting protrusion is distributed above the guide seat, and the buffer mechanism is connected to the limiting protrusion.

[0014] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, a POM lubricating sleeve is distributed within the device body, and the sidewall of the conduction mechanism contacts the POM lubricating sleeve.

[0015] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, a sealing ring is installed at the contact end between the adjusting block and the device body.

[0016] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, the lower outer wall of the device body is provided with mating threads.

[0017] Furthermore, in the aforementioned adjustable voltage regulator for dispensing channels, the voltage regulator hole is either an elliptical hole or a conical hole, and the conical angle of the conical hole is 30° to 60°; the voltage regulator hole is a single hole or a plurality of holes arranged in a ring.

[0018] By means of the above solution, this utility model has at least the following advantages:

[0019] 1. The device uses a threaded adjustment block in conjunction with a spring buffer mechanism to achieve linear pressure adjustment of the transmission mechanism. The pressure regulating diaphragm adopts an elastic structure that is thin in the middle and thick at the edges, which can sensitively respond to changes in fluid pressure in the pressure stabilizing chamber. At the same time, the POM lubrication sleeve ensures smooth movement of the guide rod and avoids pressure adjustment deviation caused by transmission jamming, adapting to the pressure requirements of different dispensing scenarios.

[0020] 2. The pressure stabilizing chamber forms a double-sealing structure through the sealing adhesive at the edge of the pressure regulating diaphragm and the sealing ring at the adjusting block, effectively preventing leakage of the dispensing fluid or intrusion of external impurities. At the same time, the nut screws fix the edge of the pressure regulating diaphragm to prevent slippage, ensuring that the pressure regulating diaphragm always maintains a tight seal with the pressure stabilizing chamber when deformed, reducing pressure fluctuations caused by seal failure or component misalignment, and ensuring uniform dispensing.

[0021] 3. The device body has a threaded connection at the bottom, allowing for direct and detachable connection to the pressure regulating interface without the need for complex assembly tools. The docking cover and the device body are designed as separate units, and core components such as the pressure regulating diaphragm and spring can be replaced by disassembling the docking cover or adjusting block, reducing the difficulty and cost of later maintenance and adapting to the daily maintenance needs of dispensing equipment.

[0022] 4. The pressure regulating diaphragm is made of elastic material resistant to the corrosion of dispensing fluids, the sealing ring is made of temperature- and corrosion-resistant fluororubber, the POM lubrication sleeve has self-lubricating properties to reduce wear on the guide rod, and the anti-slip texture design on the outer wall of the adjusting block facilitates manual operation. The above materials and structural design enable the device to adapt to different types of dispensing fluids (such as corrosive adhesives) and operating temperature ranges, extend the service life of components, and reduce the frequency of frequent component replacement.

[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a cross-sectional structural diagram of an adjustable voltage regulator suitable for dispensing channels.

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the voltage regulating diaphragm.

[0026] The meanings of the labels in the figures are as follows.

[0027] 1. Device body 2. Connecting cover

[0028] 3. Pressure stabilizing chamber; 4. Pressure stabilizing port

[0029] 5 Adjusting block 6 Pressure regulating diaphragm

[0030] 7. Meter screws 8. Guide rods

[0031] 9 Pressure plate 10 Connecting column

[0032] 11 Spring 12 Guide Seat

[0033] 13. Docking groove; 14. Limiting protrusion

[0034] 15POM lubrication sleeve 16 sealing ring

[0035] 17. Threaded joint; 18. Adjustment groove Detailed Implementation

[0036] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0037] like Figures 1 to 2 An adjustable pressure regulator for dispensing channels is disclosed, comprising a device body 1, which serves as the mounting base for the entire device and can be connected to a dispensing channel equipped with a pressure regulating interface. During manufacturing, it can be made of aluminum alloy or engineering plastic, ensuring structural strength while reducing the overall weight of the device, adapting to the installation space requirements of dispensing equipment. Its unique feature is the detachable connection cover 2 located below the device body 1. The connection cover 2 is fixed to the device body 1 by bolts, and their mating surfaces form a closed pressure regulating chamber 3, providing space for pressure regulation of the dispensing fluid. Simultaneously, connecting threads 17 are distributed on the lower outer wall of the device body 1. The specifications of these threads 17 can be designed according to the thread parameters of the pressure regulating interface, enabling a detachable connection with the interface for convenient subsequent installation, disassembly, and maintenance.

[0038] According to a preferred embodiment of this utility model, a pressure-stabilizing hole 4 for the dispensing fluid to enter and exit is provided through the docking cover 2. The structural design of the pressure-stabilizing hole 4 can be adjusted according to the actual pressure stabilization range: in terms of shape, the pressure-stabilizing hole 4 can be an elliptical hole or a conical hole, wherein the conical angle of the conical hole is controlled within the range of 30° to 60°. In terms of quantity, the pressure-stabilizing hole 4 can be a single hole or several holes arranged in a ring along the circumference of the docking cover 2. The several pressure-stabilizing holes 4 arranged in a ring can make the fluid flow out more uniformly in the pressure stabilizing chamber 3, avoid fluctuations in glue flow caused by sudden changes in local pressure, and achieve stable glue dispensing.

[0039] Further examining the pressure chamber 3, a pressure regulating assembly is installed inside to adjust the internal pressure. This assembly includes a pressure regulating diaphragm 6 horizontally positioned within the chamber. The diaphragm 6 is made of an elastic polymer material, such as fluororubber or polyurethane film. During installation, its edges are sealed to the inner wall of the pressure chamber 3, and sealant is distributed between the edges of the diaphragm 6 and the inner wall of the chamber 3. Specifically, the sealant can be a silicone adhesive or a nitrile rubber adhesive resistant to fluid corrosion, ensuring the airtightness of the pressure chamber 3 and preventing fluid leakage from affecting the pressure stabilization effect. Simultaneously, the thickness of the diaphragm 6 in the middle is less than that at the edges. This thickness difference design allows the middle region of the diaphragm 6 to more easily undergo elastic deformation when subjected to fluid pressure, thus responding more sensitively to pressure changes and improving pressure stabilization accuracy. To prevent the diaphragm 6 from slipping during deformation, several grommets 7 are installed on the docking cover 2. One end of each grommet 7 passes through the docking cover 2 and abuts against the edge of the diaphragm 6. During implementation, the number of machine screws 7 can be set to 3-4 according to the diameter of the pressure regulating diaphragm 6, and they are evenly distributed along the circumference of the docking cover 2 to balance the force on the edge of the pressure regulating diaphragm 6 and further prevent it from sliding off.

[0040] In practical implementation, this invention also includes a pressure transmission mechanism installed inside the device body 1. This mechanism includes a vertically arranged guide rod 8, with a pressure plate 9 fixedly mounted at its lower end. The diameter of the pressure plate 9 matches the diameter of the middle region of the pressure regulating diaphragm 6, ensuring that the pressure plate 9 acts evenly on the pressure regulating diaphragm 6. Simultaneously, a connecting post 10 extends upward from the upper end of the guide rod 8, coaxially arranged with the guide rod 8. To ensure smooth movement of the guide rod 8 within the device body 1, POM lubricating sleeves 15 are also fixedly distributed within the device body 1, with the inner wall of the POM lubricating sleeve 15 contacting the side wall of the guide rod 8 in the transmission mechanism. During use, the POM lubricating sleeve 15 and the guide rod 8 are in a sliding fit, significantly reducing the frictional resistance of the guide rod 8 during its up-and-down movement, preventing wear caused by long-term friction and affecting transmission accuracy. Furthermore, the POM material has excellent self-lubricating properties, eliminating the need for additional lubricant.

[0041] Meanwhile, an adjustable pressure-applying component for adjusting pressure is installed on the upper end of the transmission mechanism on the device body 1. Specifically, the adjustable pressure-applying component includes an adjusting block 5 that is threadedly connected to the device body 1. An adjusting groove 18 is provided at the upper end of the adjusting block 5, allowing the operator to manually rotate the adjusting block 5 using a screwdriver or other tools to change its axial position within the device body 1. At the lower end of the adjusting block 5, an axial storage channel is provided, within which a buffer mechanism is installed. During implementation, the buffer mechanism includes a spring 11, with a guide seat 12 installed at the lower end of the spring 11. The guide seat 12 contacts the docking post 10 of the guide rod 8 in the transmission mechanism to achieve pressure transmission. Specifically, a docking groove 13 is provided below the guide seat 12, and the upper end of the docking post 10 of the guide rod 8 is inserted into the docking groove 13. Furthermore, the inner diameter of the mating groove 13 matches the outer diameter of the mating post 10, ensuring coaxiality between the guide seat 12 and the mating post 10 and preventing force deviation of the buffer mechanism from causing jamming of the transmission mechanism. An annular limiting protrusion 14 is integrally formed above the guide seat 12. The lower end of the spring 11 in the buffer mechanism is sleeved on and connected to the limiting protrusion 14. Thus, the limiting protrusion 14 can axially limit the spring 11, preventing lateral displacement of the spring 11 during compression or extension, ensuring stable transmission of the buffering force.

[0042] In addition, a sealing ring 16 is installed at the contact end between the adjusting block 5 and the device body 1, that is, at the junction of the lower end face of the adjusting block 5 and the upper end face of the device body 1. During implementation, the sealing ring 16 can be made of fluororubber, which has good temperature resistance and sealing performance, and can prevent external dust and impurities from entering the device body 1 and affecting the operation of the components, while avoiding possible fluid leakage inside the device body 1.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An adjustable voltage regulator for dispensing channels, comprising a device body, characterized in that: A docking cover is installed at the bottom of the device body, and a pressure stabilizing chamber is formed between the docking cover and the device body. A pressure stabilizing hole is formed on the docking cover, and a pressure regulating component is installed in the pressure stabilizing chamber. A transmission mechanism is installed inside the device body, and the lower end of the transmission mechanism is connected to the pressure regulating component. An adjustable pressure applying component is installed on the upper end of the device body at the transmission mechanism. The adjustable pressure applying component includes an adjusting block that is threadedly connected to the device body. A buffer mechanism is installed at the lower end of the adjusting block, and the buffer mechanism is in contact with the transmission mechanism.

2. The adjustable voltage regulator for dispensing channels according to claim 1, characterized in that: The pressure regulating assembly includes a pressure regulating diaphragm placed horizontally in the pressure stabilizing chamber. The edge of the pressure regulating diaphragm is sealed to the pressure stabilizing chamber. Several ferrules are installed on the docking cover, with one end of each ferrule abutting against the edge of the pressure regulating diaphragm.

3. The adjustable voltage regulator for dispensing channels according to claim 2, characterized in that: The edge of the pressure regulating diaphragm is sealed with sealant between it and the pressure stabilizing chamber; the thickness of the middle of the pressure regulating diaphragm is less than the thickness of its edge.

4. The adjustable voltage regulator for dispensing channels according to claim 1, characterized in that: The transmission mechanism includes a guide rod, a pressure plate is installed at the lower end of the guide rod, and a docking post extends from the upper end of the guide rod.

5. The adjustable voltage regulator for dispensing channels according to claim 1, characterized in that: The lower end of the adjusting block has a storage channel, and a buffer mechanism is installed in the storage channel. The buffer mechanism includes a spring, and a guide seat is installed at the lower end of the spring. The guide seat contacts the guide rod.

6. The adjustable voltage regulator for dispensing channels according to claim 5, characterized in that: The guide seat has a mating groove at its lower part, the upper end of the guide rod is inserted into the mating groove, and a limiting protrusion is distributed above the guide seat. The buffer mechanism is connected to the limiting protrusion.

7. The adjustable voltage regulator for dispensing channels according to claim 1, characterized in that: The device body contains POM lubricating sleeves, and the sidewalls of the transmission mechanism are in contact with the POM lubricating sleeves.

8. The adjustable voltage regulator for dispensing channels according to claim 1, characterized in that: A sealing ring is installed at the contact end between the adjusting block and the device body.

9. The adjustable voltage regulator for dispensing channels according to claim 1, characterized in that: The lower outer wall of the device body has mating threads.

10. The adjustable voltage regulator for dispensing channels according to claim 1, characterized in that: The voltage stabilizing hole is an elliptical hole or a conical hole, and the conical hole has a conical angle of 30° to 60°; the voltage stabilizing hole is a single hole or a number of holes arranged in a ring.

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