An adjustable glue-dipping needle structure
By designing an adjustable adhesive-coating needle structure, the problem of poor needle compatibility in existing equipment was solved, enabling flexible adjustment and stable buffering of the needle spacing, thereby improving production efficiency and reducing customization costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN SHUNXIN SEMICONDUCTOR TECHNOLOGY CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-05
AI Technical Summary
Existing adhesive-coating needle equipment is difficult to adapt to chips of different sizes, resulting in low production efficiency and high customization costs.
An adjustable adhesive-coated needle structure was designed. By combining the adjusting screw, guide bar, and adjusting seat, the needle spacing can be easily adjusted. The combination of buffer plate and spring component provides stable buffer force control to ensure a secure connection of the needle.
It enables flexible adjustment of needle spacing, improves production efficiency, reduces customization costs, and ensures the stability and reliability of adhesive application.
Smart Images
Figure CN224321704U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of adhesive-coating needle technology, and more specifically, it relates to an adjustable adhesive-coating needle structure. Background Technology
[0002] In the field of semiconductor packaging dispensing and die mounting processes, there are currently two main methods: dispensing or scribbling and adhesive application. In the dispensing or scribbling process, the dispensing needle is connected to the glue tube and performs dispensing or scribbling operations on the lead frame in real time before die mounting. Although this process has a certain degree of flexibility, it has many problems, such as the easy formation of air bubbles in the silver paste, the occurrence of silver paste stringing, and the unstable air pressure of the scribbling machine leading to excessive or insufficient glue application. These problems seriously affect the quality of operation and make it difficult to meet actual production requirements. In contrast, in the adhesive application process, the dispensing needle is not directly connected to the glue tube. Instead, the dispensing needle picks up the glue pre-placed in the glue tray and then uses the glue droplet picked up by the needle tip to apply to the lead frame to complete the die mounting. This process has significantly improved the stability of glue application.
[0003] Currently, there are still some problems with adhesive dispensing needles in actual production. Specifically, on the one hand, existing adhesive dispensing equipment can usually only meet the adhesive dispensing requirements of chips with similar square shapes. For rectangular chips, multiple dispensing cycles need to be programmed on top of the existing program to meet production requirements, which greatly affects production efficiency. On the other hand, although there are some non-standard, custom-made multi-point needles on the market for adhesive tray dispensing processes, which can improve the adhesive dispensing efficiency of rectangular chips to some extent, with the continuous changes in chip size, different specifications of adhesive dispensing needles need to be customized to meet production needs. This not only leads to a significant increase in the cost of needle development and customization, but also requires a large investment of money and human resources in material and process control. Summary of the Invention
[0004] To address the aforementioned technical problems, this utility model provides an adjustable adhesive needle structure to solve the issues raised in the background art, such as limited chip size compatibility, high customization costs, and reduced production efficiency.
[0005] This utility model discloses an adjustable adhesive-applying needle structure, achieved through the following specific technical means:
[0006] An adjustable adhesive-applying needle structure includes a needle holder; a first adhesive-applying needle is fixedly disposed on one side of the bottom of the needle holder, and an adjusting frame is fixedly disposed inside the needle holder; an adjusting seat is movably disposed between the adjusting frame and the needle holder, and the adjusting seat is configured as an inverted L-shape; a second adhesive-applying needle is fixedly disposed at the bottom of the adjusting seat, and the second adhesive-applying needle and the first adhesive-applying needle are located on the same horizontal plane; an adjusting screw is rotatably disposed inside the adjusting frame, and the adjusting screw is threadedly connected to the adjusting seat; a guide crossbar is fixedly disposed inside the adjusting frame, and the guide crossbar is slidably disposed inside the adjusting seat.
[0007] The needle holder has an auxiliary structure inside, and a connecting component is slidably mounted on the top of the needle holder, with the connecting component located above the auxiliary structure; the connecting component includes: a buffer post and a threaded post; the buffer post is slidably mounted inside the top side of the needle holder; the threaded post is fixedly mounted on the top of the buffer post.
[0008] In at least some embodiments, the needle holder has an marking groove inside, and a guide rod is fixedly installed inside the needle holder, and the guide rod is arranged in a circular array.
[0009] In at least some embodiments, a protective cylinder A is fixedly provided on the outside of the adjusting frame, and an adjusting block A is fixedly provided at the top of the adjusting screw; the adjusting block A has a hexagonal hole inside, and the adjusting block A is movably disposed inside the protective cylinder A.
[0010] In at least some embodiments, a scale is fixedly provided inside the top side of the adjustment frame, and a pointer is fixedly provided outside the adjustment seat, with the outer side of the pointer abutting against the outer side of the scale.
[0011] In at least some embodiments, the auxiliary structure includes: a double-ended screw, a protective cylinder B, and an adjusting block B; the double-ended screw is rotatably disposed inside the needle holder; the protective cylinder B is fixedly disposed outside the needle holder; the adjusting block B is fixedly disposed at the top of the double-ended screw, and the adjusting block B is movably disposed inside the protective cylinder B, and a hexagonal hole is provided inside the adjusting block B.
[0012] In at least some embodiments, the auxiliary structure further includes: an auxiliary seat, an auxiliary plate, a connecting seat, a disc, and an indicator block; the auxiliary seat is threadedly connected to the outside of the double-ended screw, and the auxiliary seat is slidably disposed inside the needle holder via a dovetail groove; the auxiliary plate is rotatably disposed on the top of the auxiliary seat; the connecting seat is rotatably disposed at the end of the auxiliary plate, and two sets of connecting seats, auxiliary plates, and auxiliary seats are symmetrically arranged; the disc is fixedly disposed between the two sets of connecting seats, and the disc is slidably disposed outside the guide vertical rod; the indicator block is fixedly disposed outside the disc, and the indicator block is movably disposed inside the indicator groove.
[0013] In at least some embodiments, the connecting assembly further includes: a buffer disk; the buffer disk is slidably disposed on the outside of the guide vertical rod and fixedly disposed on the bottom of the buffer column; a spring is disposed between the bottom of the buffer disk and the top of the disk, and the outside of the spring is in contact with the outside of the guide vertical rod.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. In this utility model, by providing an adjusting screw, a guide bar, and an adjusting seat, the lateral position of the second adhesive-applying needle can be easily adjusted; this facilitates adjusting the distance between the first and second adhesive-applying needles according to the specific size of the chip, thereby ensuring that the adhesive-applying operation can be completed with high quality and high efficiency, effectively meeting diverse production needs.
[0016] In this invention, by providing a buffer disc and buffer column, as well as a disc and spring, the first and second adhesive-applying needles can be buffered, preventing damage to the needles due to height differences. Simultaneously, the double-ended screw, auxiliary seat, auxiliary plate, and connecting seat allow adjustment of the initial distance between the disc and the buffer disc, and control of the initial length of the spring between them. Due to the elasticity of the spring, changes in its compression length directly alter its elasticity, thereby achieving effective control of the buffering force. This adapts to the diverse buffering force requirements in different adhesive-applying scenarios, ensuring the stability and reliability of the adhesive-applying operation.
[0017] In this invention, by providing a threaded post, it can be tightly screwed into the matching connecting parts to form a stable threaded connection, thereby significantly reducing the assembly difficulty and making the assembly and fixing process of the entire device more convenient and efficient, greatly improving assembly efficiency and reliability. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the lower surface structure of the needle holder of this utility model.
[0020] Figure 3 This is a schematic diagram of the internal structure of the adjustment frame of this utility model.
[0021] Figure 4 This is a schematic diagram of the internal structure of the needle holder of this utility model.
[0022] Figure 5 This is a schematic diagram of the lower surface structure of the disc of this utility model.
[0023] Figure 6 This is a schematic diagram of the connecting component of this utility model.
[0024] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0025] 1. Needle holder; 101. First adhesive-applying needle; 102. Adjusting frame; 103. Adjusting seat; 104. Second adhesive-applying needle; 105. Guide bar; 106. Adjusting screw; 107. Protective sleeve A; 108. Adjusting block A; 109. Pointer; 1010. Scale; 1011. Marking groove; 1012. Guide rod;
[0026] 2. Auxiliary structures; 201. Double-ended screw; 202. Protective cylinder B; 203. Adjusting block B; 204. Auxiliary seat; 205. Auxiliary plate; 206. Connecting seat; 207. Disc; 208. Identifying block;
[0027] 3. Connecting components; 301. Buffer disk; 302. Buffer post; 303. Threaded post. Detailed Implementation
[0028] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0029] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown:
[0030] This utility model provides an adjustable adhesive-applying needle structure, including a needle holder 1; a first adhesive-applying needle 101 is fixedly disposed on one side of the bottom of the needle holder 1, and an adjusting frame 102 is fixedly disposed inside the needle holder 1; an adjusting seat 103 is movably disposed between the adjusting frame 102 and the needle holder 1, and the adjusting seat 103 is configured as an inverted L shape; a second adhesive-applying needle 104 is fixedly disposed at the bottom of the adjusting seat 103, and the second adhesive-applying needle 104 and the first adhesive-applying needle 101 are located on the same horizontal plane; an adjusting screw 106 is rotatably disposed inside the adjusting frame 102, and the adjusting screw 106 is threadedly connected to the adjusting seat 103; a guide crossbar 105 is fixedly disposed inside the adjusting frame 102, and the guide crossbar 105 is slidably disposed inside the adjusting seat 103;
[0031] In this embodiment, an auxiliary structure 2 is provided inside the needle holder 1, and a connecting component 3 is slidably provided on the top of the needle holder 1, and the connecting component 3 is located above the auxiliary structure 2; a protective cylinder A107 is fixedly provided on the outside of the adjusting frame 102, and an adjusting block A108 is fixedly provided on the top of the adjusting screw 106; a hexagonal hole is opened inside the adjusting block A108, and the adjusting block A108 is movably disposed inside the protective cylinder A107; a scale 1010 is fixedly provided inside the top side of the adjusting frame 102, and a pointer 109 is fixedly provided on the outside of the adjusting seat 103, and the outside of the pointer 109 is in contact with the outside of the scale 1010; its specific function is: by providing the adjusting screw 106, the guide crossbar 105 and the adjusting seat 103, the lateral position of the second adhesive needle 104 can be easily adjusted; it is beneficial to adjust the distance between the first adhesive needle 101 and the second adhesive needle 104 according to the specific size of the chip.
[0032] Example 2: As shown in the attached document Figure 1 With appendix Figure 6 As shown: Based on Embodiment 1, the connecting component 3 includes: a buffer post 302 and a threaded post 303; the buffer post 302 is slidably disposed inside the top side of the needle holder 1; the threaded post 303 is fixedly disposed on the top of the buffer post 302; its specific function is: by providing the threaded post 303, it can be tightly screwed with the matching connecting component to form a stable threaded connection, thereby significantly reducing the assembly difficulty.
[0033] Example 3: As shown in the attached document Figure 4 To be continued Figure 6As shown: Based on Embodiment 1 and Embodiment 2, the auxiliary structure 2 includes: a double-ended screw 201, a protective cylinder B202, an adjusting block B203, an auxiliary seat 204, an auxiliary plate 205, a connecting seat 206, a disc 207, and an identification block 208; the double-ended screw 201 is rotatably disposed inside the needle holder 1; the protective cylinder B202 is fixedly disposed outside the needle holder 1; the adjusting block B203 is fixedly disposed at the top end of the double-ended screw 201, and the adjusting block B203 is movably disposed on the protective cylinder 207. Inside the sleeve B202, and inside the adjusting block B203, there is a hexagonal hole; the auxiliary seat 204 is threadedly connected to the outside of the double-ended screw 201, and the auxiliary seat 204 is slidably mounted inside the needle holder 1 via a dovetail groove; the auxiliary plate 205 is rotatably mounted on the top of the auxiliary seat 204; the connecting seat 206 is rotatably mounted on the end of the auxiliary plate 205, and two sets of the connecting seat 206, the auxiliary plate 205, and the auxiliary seat 204 are symmetrically arranged; the disc 207 is fixedly mounted. Between the two sets of connecting seats 206, the disc 207 is slidably disposed on the outside of the guide rod 1012; the marking block 208 is fixedly disposed on the outside of the disc 207 and movably disposed inside the marking groove 1011; the connecting assembly 3 also includes: a buffer disc 301; the buffer disc 301 is slidably disposed on the outside of the guide rod 1012 and fixedly disposed on the bottom of the buffer column 302; a spring is provided between the bottom of the buffer disc 301 and the top of the disc 207. The outer side of the spring is in contact with the outer side of the guide rod 1012; the needle holder 1 has an marking groove 1011 inside, and the guide rod 1012 is fixedly installed inside the needle holder 1, and the guide rod 1012 is arranged in a ring array; its specific function is: by setting the buffer plate 301 and the buffer column 302, as well as the disc 207 and the spring, the first adhesive needle 101 and the second adhesive needle 104 can be buffered to avoid damage to the needle due to the height difference.
[0034] The specific usage and function of this embodiment are as follows:
[0035] In this invention, the required distance between the first adhesive-applying needle 101 and the second adhesive-applying needle 104 is determined based on the specific size of the chip to be adhesive-applied. A hexagonal wrench is inserted into the hexagonal hole inside the adjusting block A108, and the adjusting block A108 is rotated, causing the adjusting screw 106 to rotate inside the adjusting frame 102. During the rotation of the adjusting screw 106, due to the threaded connection between the adjusting screw 106 and the adjusting seat 103, and the sliding guiding effect of the guide bar 105 on the adjusting seat 103, the adjusting seat 103 will move laterally, thereby moving the second adhesive-applying needle 104. At this time, the pointer 109 on the outside of the adjusting seat 103 is observed to be aligned with the scale 1 inside the top side of the adjusting frame 102. At position 010, when pointer 109 indicates the scale corresponding to the required spacing, stop rotating adjusting block A108 to complete the adjustment of the spacing between the first adhesive needle 101 and the second adhesive needle 104; according to the actual situation of the adhesive application operation, determine the required initial spacing between disc 207 and buffer disc 301, and then control the compression length of the spring to achieve a suitable buffering force; insert a hexagonal wrench into the hexagonal hole inside adjusting block B203, rotate adjusting block B203, and drive the double-ended screw 201 to rotate inside the needle holder 1; due to the threaded connection between the double-ended screw 201 and the auxiliary seat 204, and the sliding guide of the auxiliary seat 204 inside the needle holder 1 through the dovetail groove, the auxiliary seat 204 will move along The double-headed screw 201 moves; the auxiliary seat 204 moves, causing the auxiliary plate 205 to change angle, and the auxiliary plate 205, in turn, drives the disc 207 to slide outside the guide rod 1012 through the connecting seat 206; observe the position of the marking block 208 on the outside of the disc 207 in the marking groove 1011 inside the needle holder 1. When the marking block 208 moves to the required position, that is, when the disc 207 and the buffer disc 301 reach the required initial distance, stop rotating the adjusting block B203; at this time, the compression length of the spring between the disc 207 and the buffer disc 301 is determined, and the buffering force is also adjusted accordingly; align the threaded post 303 with the corresponding connecting hole of the equipment or component to be connected. Due to the thread design of the threaded post 303, By rotating the threaded post 303, it is tightly screwed into the connecting component to form a stable threaded connection, thereby completing the assembly and fixation of the entire adjustable adhesive dispensing needle structure. After completing the above adjustment and assembly operations, the adhesive dispensing operation can be carried out. The adhesive dispensing needle structure is moved above the glue tray containing glue, and the needle is controlled to descend so that the first adhesive dispensing needle 101 and the second adhesive dispensing needle 104 are immersed in the glue to pick up the glue. Then the needle is raised, and the glue-soaked needle is moved above the lead frame where the wafer needs to be loaded. The needle is controlled to descend, and the glue is applied to the lead frame to complete the wafer loading process. During the operation, the spring between the buffer tray 301 and the disc 207 can play a buffering role to ensure the stability and reliability of the adhesive dispensing operation.
Claims
1. An adjustable adhesive-applying needle structure, characterized in that, include: A needle holder (1); a first adhesive-coated needle (101) is fixedly installed on one side of the bottom of the needle holder (1), and an adjusting frame (102) is fixedly installed inside the needle holder (1); an adjusting seat (103) is movably installed between the adjusting frame (102) and the needle holder (1), and the adjusting seat (103) is set in an inverted L shape; a second adhesive-coated needle (104) is fixedly installed at the bottom of the adjusting seat (103), and the second adhesive-coated needle (104) and the first adhesive-coated needle (101) are located on the same horizontal plane; an adjusting screw (106) is rotatably installed inside the adjusting frame (102), and the adjusting screw (106) is installed inside the adjusting seat (103) by a threaded connection; a guide crossbar (105) is fixedly installed inside the adjusting frame (102), and the guide crossbar (105) is slidably installed inside the adjusting seat (103); The needle holder (1) is provided with an auxiliary structure (2) inside, and a connecting component (3) is slidably provided on the top of the needle holder (1), and the connecting component (3) is located above the auxiliary structure (2); the connecting component (3) includes: a buffer post (302) and a threaded post (303); the buffer post (302) is slidably provided inside the top side of the needle holder (1); the threaded post (303) is fixedly provided on the top of the buffer post (302).
2. The adjustable adhesive-applying needle structure according to claim 1, characterized in that: The needle holder (1) has an internal marking groove (1011) and a guide rod (1012) is fixedly installed inside the needle holder (1), and the guide rod (1012) is arranged in a ring array.
3. The adjustable adhesive-applying needle structure according to claim 1, characterized in that: The adjustment frame (102) is fixedly provided with a protective cylinder A (107) on the outside, and an adjustment block A (108) is fixedly provided at the top of the adjustment screw (106); the adjustment block A (108) has a hexagonal hole inside, and the adjustment block A (108) is movably provided inside the protective cylinder A (107).
4. The adjustable adhesive-applying needle structure according to claim 1, characterized in that: A scale (1010) is fixedly installed inside the top side of the adjustment frame (102), and a pointer (109) is fixedly installed on the outside of the adjustment seat (103), with the outside of the pointer (109) in contact with the outside of the scale (1010).
5. The adjustable adhesive-applying needle structure according to claim 2, characterized in that: The auxiliary structure (2) includes: a double-ended screw (201), a protective cylinder B (202), and an adjusting block B (203); the double-ended screw (201) is rotatably disposed inside the needle holder (1); the protective cylinder B (202) is fixedly disposed outside the needle holder (1); the adjusting block B (203) is fixedly disposed at the top of the double-ended screw (201), and the adjusting block B (203) is movably disposed inside the protective cylinder B (202), and a hexagonal hole is opened inside the adjusting block B (203).
6. The adjustable adhesive dispensing needle structure according to claim 5, characterized in that: The auxiliary structure (2) further includes: an auxiliary seat (204), an auxiliary plate (205), a connecting seat (206), a disc (207), and an identifier block (208); the auxiliary seat (204) is connected to the outside of the double-ended screw (201) by a threaded connection, and the auxiliary seat (204) is slidably disposed inside the needle holder (1) by a dovetail groove; the auxiliary plate (205) is rotatably disposed on the top of the auxiliary seat (204); the connecting seat (206) is rotatably disposed at the end of the auxiliary plate (205), and the connecting seat (206), the auxiliary plate (205), and the auxiliary seat (204) are symmetrically disposed in two sets; the disc (207) is fixedly disposed between the two sets of connecting seats (206), and the disc (207) is slidably disposed outside the guide rod (1012); the identifier block (208) is fixedly disposed outside the disc (207), and the identifier block (208) is movably disposed inside the identifier groove (1011).
7. The adjustable adhesive dispensing needle structure according to claim 6, characterized in that: The connecting component (3) further includes: a buffer plate (301); the buffer plate (301) is slidably disposed on the outside of the guide rod (1012), and the buffer plate (301) is fixedly disposed on the bottom of the buffer column (302); a spring is disposed between the bottom of the buffer plate (301) and the top of the disc (207), and the outside of the spring is in contact with the outside of the guide rod (1012).