Spot plating wheel structure
By using a 0.6mm positioning pin and guide surface on the point plating wheel, the problem of unstable positioning is solved, and the precision control and stable electroplating process of micro-terminals are realized, reducing the defect rate and cost.
Patent Information
- Application Number
- CN202421441204.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The existing dot plating wheels are prone to shaking and unstable when the positioning needle is fixed, resulting in an increase in the defect rate of the dot plating of the micro-terminal terminals, a decrease in quality and an increase in cost.
A point-plating wheel structure is designed, using a 0.6mm positioning needle and guide surface. By cooperating with the guide surface at equal distances, the fixed hole is accurately positioned, improving positioning accuracy and stabilizing the electroplating process.
Through the 0.6mm positioning pin and guide surface, precision control of the micro terminals is achieved, the electroplating process is stabilized, the defect rate is reduced, and the product quality and cost are controlled.
Smart Images
Figure CN222795757U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a spot plating wheel, in particular to a spot plating wheel structure. Background Art
[0002] The spot plating wheel is a type of spot plating mold, also known as a selective plating ring, spray head, spot plating jig or spot plating fixture small wheel plating. It is a special tool used for selective electroplating of lead frames of specific electronic products on a general reel-to-reel spot plating machine.
[0003] Spot plating by spot plating wheel is a high-speed and economical electroplating method, which is suitable for lead frame electroplating of IC, diode, triode, connector and LED and other electronic components. Because it can achieve selective electroplating of functional areas, the electroplating area is small, which can achieve the purpose of saving precious metals such as gold and silver.
[0004] Taking terminal spot plating as an example, before the spot plating wheel is used to perform terminal spot plating, the strip must be pulled first, and the strip must be fixed to the positioning hole on the strip through the positioning pin on the spot plating wheel. However, the current positioning hole size on the strip is mostly larger than 2mm. Since the positioning hole size is too large, it is easy to cause shaking and instability when the positioning pin is fixed. If it is applied to micro terminals (the length is defined as 0.18 mm with an error of +-0.05mm), the defective rate of micro terminal spot plating will increase, which will not only reduce the quality but also increase the cost. Summary of the invention
[0005] The utility model provides a spot plating wheel structure, aiming to solve the above technical problems.
[0006] An embodiment of the utility model provides a spot plating wheel structure for fixing a material strip having a plurality of fixing holes and a plurality of terminals, and for conveying and spot plating. It is characterized in that: the spot plating wheel defines a transmission connection portion for being fixed and driven by a transmission device, a plurality of electroplating holes and a plurality of positioning needles with a diameter of 0.6 mm, each of the positioning needles is arranged at an equal distance and is provided for penetrating the fixing holes, wherein each of the positioning needles defines a guide surface for guiding the positioning of the fixing holes, and an equal number of conveying wheels with a plurality of transmission shafts are arranged on both sides of the spot plating wheel, each of the conveying wheels is used to drive the material strip, and the spot plating wheel is driven to rotate through the transmission device, and the material strip is wrapped around each of the conveying wheels for conveying, and each of the terminals on the material strip corresponds to the electroplating holes in sequence and is locally electroplated, and the corresponding fixing holes are defined by the 0.6 mm positioning needles to match the material strip relative to each of the terminals.
[0007] Preferably, the spot plating wheel is made of polyetheretherketone (PEEK) material.
[0008] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:
[0009] 1. The corresponding fixing holes can be defined through the 0.6mm positioning pins, and the micro terminals connected to the material strips that meet the corresponding fixing holes can be precisely controlled during the gold plating / stripping process, thereby stabilizing the product quality and cost control of the electroplating process.
[0010] 2. The guide surface is used to guide the fixing hole to the position, which effectively improves the positioning accuracy and prevents the strip 1 from being separated due to deviation. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model.
[0012] Figure 2 It is a schematic diagram of the configuration of the spot plating wheel and each conveying wheel of the utility model.
[0013] Figure 3 This is a schematic diagram of the structure of the 0.6mm positioning pin positioning fixing hole of the utility model.
[0014] Explanation of symbols
[0015] Material strip 1, terminal 10, fixing hole 12, spot plating wheel 2, transmission connection part 20, electroplating hole 22, positioning pin 24, transmission device 3, conveying wheel 4, transmission shaft 40. DETAILED DESCRIPTION
[0016] Please refer to Figure 1 , Figure 2 and Figure 3 The figure shows a three-dimensional schematic diagram of a preferred embodiment of the utility model, a schematic diagram of the configuration of the spot plating wheel and each conveying wheel, and a schematic diagram of the structure of the 0.6mm positioning pin positioning fixing hole. The utility model is a spot plating wheel structure, which is used to fix a material strip 1 with a plurality of fixing holes 12 and a plurality of terminals 10, and to convey and spot plate, wherein the spot plating wheel 2 (made of polyetheretherketone (PEEK) material) defines a transmission connection part 20 for fixing and driving a transmission device 3, a plurality of electroplating holes 22 and a plurality of positioning pins 24 with a diameter of 0.6mm, each positioning pin 24 is arranged at an equal distance and is provided for penetrating the fixing hole 12, and the equal distance arrangement of each positioning pin 24 is mainly arranged in conjunction with the material strip 1 with a 0.6mm fixing hole 12, that is, the distance of the 0.6mm fixing hole 12 on the material strip 1 is equal to the distance of each positioning pin 24.
[0017] On the other hand, the two sides of the spot plating wheel 2 are provided with an equal number of conveying wheels 4 with multiple transmission shafts 40. Each conveying wheel 4 is used to drive the material strip 1. The spot plating wheel 2 is driven to rotate through the transmission device 3. The material strip 1 is wrapped around each conveying wheel 4 for transportation. Each terminal 10 on the material strip 1 corresponds to the electroplating hole 22 in sequence and is partially electroplated. The corresponding 0.6mm fixing hole 12 is defined by the 0.6mm positioning pin 24 to match the material strip 1 of the relatively miniature terminal 10, and the so-called miniature length of the terminal 10 is defined as 0.18mm with an error of +-0.05mm. In the above, in order to allow the fixing hole 12 to be accurately and correctly positioned to the positioning pin 24, a guide surface 240 is defined on the positioning pin 24. The guide surface 240 is used to guide the fixing hole 12 to the position, which effectively improves the positioning accuracy and does not cause the material strip 1 to be separated due to deviation.
[0018] As can be seen from the above structure, the utility model mainly limits the corresponding 0.6mm fixing hole 12 through the 0.6mm positioning pin 24, and the material strip 1 that corresponds to the fixing hole 12 and the connected micro terminals 10 can be precisely controlled in the gold plating / gold stripping process, thereby stabilizing the product quality and cost control of the electroplating process.
Claims
1. A spot plating wheel structure for fixing a material strip having a plurality of fixing holes and a plurality of terminals, and for conveying and spot plating, characterized in that : A spot plating wheel defines a transmission connection portion for being fixed and driven by a transmission device, a plurality of electroplating holes and a plurality of positioning pins with a diameter of 0.6 mm. Each of the positioning pins is arranged at an equal distance and is provided for penetrating the fixing holes, wherein each of the positioning pins defines a guide surface for guiding the positioning of the fixing holes. An equal number of conveying wheels with a plurality of transmission shafts are arranged on both sides of the spot plating wheel. Each of the conveying wheels is used to drive the material belt. The spot plating wheel is driven to rotate through the transmission device. The material belt is wrapped around each of the conveying wheels for transportation. Each of the terminals on the material belt corresponds to the electroplating holes in sequence and is locally electroplated. The corresponding fixing holes are defined by the 0.6 mm positioning pins to match the material belt relative to each of the terminals.
2. The spot plating wheel structure according to claim 1, characterized in that :The spot plating wheel is made of polyetheretherketone material.