A quick change dispensing needle assembly
By incorporating a locking buckle, a return spring, and an extension block, the design solves the problem of complex and easily damaged replacement of traditional dispensing needle components. It enables rapid disassembly and installation, improves work efficiency and equipment stability, and meets the needs of high-frequency replacement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MINGXIN ADVANCED TECHNOLOGY CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional dispensing needle assemblies require tools for replacement, which is complicated and prone to damage, leading to decreased accuracy and equipment failure, making it difficult to meet the requirements of high-frequency replacement and high precision.
Employing a structure including a locking buckle, a return spring, and an extension block, the dispensing needle can be quickly disassembled and installed by simply pressing and rotating the base. The vertical groove and the surrounding groove work together to provide guidance and positioning, ensuring stability.
It enables quick replacement of dispensing needles, reduces operation time, improves work efficiency and equipment stability, and ensures dispensing accuracy and normal equipment operation.
Smart Images
Figure CN224371906U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dispensing needle technology, and in particular to a quick-change dispensing needle assembly. Background Technology
[0002] In the production process of electronic devices, such as the assembly of circuit boards, it is necessary to accurately apply glue to specific locations, such as chip bonding and electronic component fixing. The accuracy and efficiency of dispensing directly affect the product quality and production speed. Traditional dispensing methods are difficult to meet the increasingly demanding production requirements, especially in large-scale production, where the frequency of dispensing needle replacement is high because different types of glue, different dispensing locations and shapes may require different needle specifications.
[0003] Traditional dispensing needle assemblies are usually connected to dispensing equipment via threaded connections or tight fits. When it is necessary to replace the needle, operators often need to use tools such as wrenches to disassemble and install the needle. This process is not only time-consuming, but also prone to damaging the needle or connection parts during operation, resulting in decreased dispensing accuracy or equipment failure. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a quick-change dispensing needle assembly.
[0005] This utility model is achieved using the following technical solution: a quick-change dispensing needle assembly, including a mounting base, a vertical groove and a circumferential groove on the inner wall of the mounting base, an ejection hole on the inner wall of the circumferential groove, an ejection spring fixedly connected to the inner bottom wall of the mounting base, a pressure ring fixedly connected to the top of the ejection spring, a base snapped onto the surface of the mounting base, an extension block fixedly connected to the surface of the base, grooves on the interior of both the base and the extension block, a return spring fixedly connected to the inner wall of the groove, a locking buckle fixedly connected to the surface of the return spring, and a dispensing needle fixedly connected to the upper surface of the base.
[0006] The above technical solution enables rapid replacement of dispensing needles, allowing for disassembly and installation without complicated steps, thus improving work efficiency and reducing the time cost of equipment maintenance and parts replacement.
[0007] As a further improvement to the above solution, two vertical grooves are provided, which are respectively opened on both sides of the inner wall of the mounting base.
[0008] As a further improvement to the above solution, the surrounding groove is located below the vertical groove, and the vertical groove and the surrounding groove are connected.
[0009] As a further improvement to the above solution, the pressure ring is in contact with the base.
[0010] As a further improvement to the above solution, the extension block is adapted to the vertical groove and the surrounding groove.
[0011] As a further improvement to the above solution, the extension block is slidably connected to the inside of the surrounding groove.
[0012] As a further improvement to the above solution, the locking buckle is adapted to the pop-out hole, and the locking buckle passes through the pop-out hole.
[0013] The above technical solution can quickly and firmly fix the position of the dispensing needle, ensuring the stability of the dispensing needle during use, and also facilitating disassembly when replacement is needed.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This invention utilizes a structure including a locking buckle, a return spring, and an extension block. When disassembling the dispensing needle, simply press the locking buckles on both sides, rotate the base, and pull the base upwards to allow it to enter the vertical groove. At this point, the ejector spring returns to its original position, and the pressure ring pushes the base out of the mounting base, thus disassembling the dispensing needle. The operation is simple and convenient, greatly saving disassembly time and improving work efficiency. The surrounding groove restricts the extension block after installation, preventing it from detaching. Simultaneously, the locking buckle and the snap-fit structure of the ejector hole further enhance the stability of the dispensing needle after installation, ensuring that the dispensing needle will not easily shake or shift during use, thereby improving the overall stability of the dispensing needle assembly. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the pop-out hole structure of this utility model;
[0018] Figure 3 This is an exploded view of the ejector spring of this utility model;
[0019] Figure 4 This is an exploded structural diagram of the reset spring of this utility model.
[0020] Explanation of key symbols:
[0021] 1. Mounting base; 2. Vertical groove; 3. Surround groove; 4. Pop-out hole; 5. Ejection spring; 6. Pressure ring; 7. Base; 8. Extension block; 9. Return spring; 10. Locking buckle; 11. Dispensing needle. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0023] Example:
[0024] Please combine Figure 1-4 This embodiment provides a quick-change dispensing needle assembly, including a mounting base 1. The inner wall of the mounting base 1 has a vertical groove 2 and a surrounding groove 3. The inner wall of the surrounding groove 3 has an ejection hole 4. An ejector spring 5 is fixedly connected to the inner bottom wall of the mounting base 1, and a pressure ring 6 is fixedly connected to the top of the ejector spring 5. A base 7 is snapped onto the surface of the mounting base 1, and an extension block 8 is fixedly connected to the surface of the base 7. Both the base 7 and the extension block 8 have grooves inside. A return spring 9 is fixedly connected to the inner wall of the groove, and a locking buckle 10 is fixedly connected to the surface of the return spring 9. A dispensing needle 11 is fixedly connected to the upper surface of the base 7. When the dispensing needle 11 needs to be removed, pressing the locking buckles 10 on both sides compresses and retracts the locking buckles 10 into the extension block 8 under the action of the return spring 9. Then, rotating the base 7 causes the extension block 8 to rotate along the surrounding groove 3, and the inner wall of the surrounding groove 3 blocks the locking buckles 10, keeping it in a retracted state. When the extension block 8 rotates to the position of the vertical groove 2, because the vertical groove 2 and the surrounding groove 3 are connected, the base 7 is pulled upwards, and the extension block 8 slides in the vertical groove 2. At the same time, the ejector spring 5 resets, and the pressure ring 6 pushes the base 7 out of the mounting base 1, thereby removing the dispensing needle 11. During installation, press the locking buckles 10 on both sides, insert the extension block 8 into the vertical groove 2, and then press the base 7. The pressure ring 6 compresses the ejector spring 5. When the extension block 8 reaches the bottom of the vertical groove 2 and enters the surrounding groove 3, rotate the base 7, and the extension block 8 slides and rotates in the surrounding groove 3. When the extension block 8 moves to the position of the pop-out hole 4, the reset spring 9 resets, causing the locking buckle 10 to automatically pop out and engage with the pop-out hole 4, fixing the position of the dispensing needle 11.
[0025] There are two vertical grooves 2, one on each side of the inner wall of the mounting base 1. These two grooves provide accurate guidance and positioning for the extension block 8 during disassembly and installation. For example, during disassembly, the extension block 8 can slide smoothly upwards along the vertical grooves 2 on both sides; during installation, the extension block 8 can accurately insert into the vertical grooves 2 on both sides and slide downwards to the appropriate position.
[0026] The surrounding groove 3 is located below the vertical groove 2. The vertical groove 2 and the surrounding groove 3 are connected. During disassembly, the extension block 8 can smoothly transition from the vertical groove 2 to the surrounding groove 3, making it easy to rotate the extension block 8 in the surrounding groove 3 by rotating the base 7. During installation, after the extension block 8 enters the surrounding groove 3 from the bottom of the vertical groove 2, it can also rotate to the appropriate position in the surrounding groove 3.
[0027] The pressure ring 6 is in contact with the base 7. During installation, when the base 7 is pressed, the pressure ring 6 is compressed by the pressure of the base 7, thus compressing the ejector spring 5. During disassembly, when the ejector spring 5 returns to its original position, the pressure ring 6 transmits the force to the base 7, ejecting the base 7 from the mounting base 1.
[0028] The extension block 8 is adapted to the vertical groove 2 and the surrounding groove 3. During disassembly and installation, the extension block 8 can slide accurately in the vertical groove 2 and rotate in the surrounding groove 3. For example, during disassembly, the extension block 8 will not wobble or get stuck when sliding in the vertical groove 2, and it can also maintain proper contact with the groove wall when rotating in the surrounding groove 3, ensuring smooth rotation.
[0029] The extension block 8 is slidably connected inside the surrounding groove 3. During disassembly and installation, after the extension block 8 enters the surrounding groove 3, its position is adjusted by sliding and rotating within the surrounding groove 3. For example, during installation, the extension block 8 slides and rotates within the surrounding groove 3 to the position of the pop-out hole 4 so that the locking buckle 10 pops out and engages.
[0030] The locking buckle 10 is adapted to the pop-out hole 4. The locking buckle 10 passes through the pop-out hole 4. During the installation process, when the extension block 8 moves to the position of the pop-out hole 4, the reset spring 9 resets and causes the locking buckle 10 to pop out. Since the locking buckle 10 is adapted to the pop-out hole 4, it can be accurately inserted into the pop-out hole 4 and pass through to form a snap-fit structure, thereby fixing the position of the dispensing needle 11.
[0031] The implementation principle of a quick-change dispensing needle assembly in this application embodiment is as follows: When it is necessary to disassemble the dispensing needle 11, first press the locking buckles 10 on both sides. The locking buckles 10 are compressed and retracted into the extension block 8 under the action of the return spring 9. Then rotate the base 7. At this time, the extension block 8 rotates along the surrounding groove 3. The inner wall of the surrounding groove 3 blocks the locking buckles 10 to keep it in a contracted state. When the extension block 8 rotates to the position of the vertical groove 2, pull the base 7 upward. The extension block 8 slides in the vertical groove 2. At the same time, the spring 5 is pushed out to reset. The pressure ring 6 pushes the base 7 out of the mounting base 1, thereby completing the disassembly of the dispensing needle 11. When installing the dispensing needle 11, first press the locking buckles 10 on both sides and insert the extension block 8 into the vertical groove 2. Because the vertical groove Two extension blocks 2 are located on both sides of the inner wall of the mounting base 1, providing accurate guidance and positioning for the extension block 8. The extension block 8 can be accurately inserted and slide downward along the vertical groove 2. Pressing the base 7 causes the pressure ring 6 to contact the base 7, and the pressure ring 6 is compressed by the pressure of the base 7, thus compressing the ejector spring 5. When the extension block 8 reaches the bottom of the vertical groove 2 and enters the surrounding groove 3, the base 7 is rotated, and the extension block 8 slides and rotates in the surrounding groove 3. When the extension block 8 moves to the position of the pop-out hole 4, the reset spring 9 resets, causing the locking buckle 10 to pop out. Because the locking buckle 10 is compatible with the pop-out hole 4 and the locking buckle 10 penetrates the pop-out hole 4, the locking buckle 10 can be accurately inserted into the pop-out hole 4 and penetrate to form a snap-fit structure, thereby fixing the position of the dispensing needle 11.
[0032] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A quick-change dispensing needle assembly, characterized in that, The system includes a mounting base (1), the inner wall of which has a vertical groove (2), a surrounding groove (3), and a pop-out hole (4) on the inner wall of the surrounding groove (3). A push-out spring (5) is fixedly connected to the inner bottom wall of the mounting base (1), and a pressure ring (6) is fixedly connected to the top of the push-out spring (5). A base (7) is snapped onto the surface of the mounting base (1), and an extension block (8) is fixedly connected to the surface of the base (7). Both the base (7) and the extension block (8) have grooves inside. A return spring (9) is fixedly connected to the inner wall of the groove, and a locking buckle (10) is fixedly connected to the surface of the return spring (9). A dotted glue needle (11) is fixedly connected to the upper surface of the base (7).
2. The quick-change dispensing needle assembly as described in claim 1, characterized in that: There are two vertical grooves (2), which are respectively opened on both sides of the inner wall of the mounting base (1).
3. The quick-change dispensing needle assembly as described in claim 1, characterized in that: The surrounding groove (3) is located below the vertical groove (2), and the vertical groove (2) and the surrounding groove (3) are connected.
4. The quick-change dispensing needle assembly as described in claim 1, characterized in that: The pressure ring (6) is in contact with the base (7).
5. The quick-change dispensing needle assembly as described in claim 1, characterized in that: The extension block (8) is adapted to the vertical groove (2) and the surrounding groove (3).
6. The quick-change dispensing needle assembly as described in claim 1, characterized in that: The extension block (8) is slidably connected to the inside of the surrounding groove (3).
7. The quick-change dispensing needle assembly as described in claim 1, characterized in that: The locking buckle (10) is adapted to the pop-out hole (4), and the locking buckle (10) passes through the pop-out hole (4).