Electroplating tin ball surface brightening treatment device

By designing a surface polishing device for electroplated tin balls, physical friction and spraying are used to remove unevenness and impurities on the surface of the tin balls, solving the problem of insufficient brightness of lead-free tin balls, and improving the surface finish of the tin balls and the success rate of ball placement.

CN223441994UActive Publication Date: 2025-10-17UNITED JIWU TECHNOLOGY (TIANJIN) CO LTD
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Patent Information

Application Number
CN202422954682.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-30
Publication Date
2025-10-17
Estimated Expiration
2034-11-30

AI Technical Summary

Technical Problem

There is silver-copper segregation on the surface of lead-free solder balls, which causes fog-like protrusions on the surface of the solder balls, affecting the brightness and the success rate of ball placement.

Method used

A surface brightening treatment device for electroplated tin balls is designed, which includes a mixing box, a screening plate, a spray head and a driving guide rail. Physical friction is used to remove unevenness and defects, and screening and spraying are combined to remove impurities and dust and improve the surface finish.

Benefits of technology

Effectively remove the unevenness and impurities on the surface of the solder ball, improve the surface finish, and ensure the success rate of the ball placement process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of tin ball processing devices, in particular to an electrotinning ball surface brightening processing device which comprises a mixing box, a screening plate, a spraying head, a driving guide rail and a collecting box, supports are arranged on the two sides of the mixing box, the mixing box is driven by a power assembly to rotate, a feeding pipe is arranged on the right side of the upper end of the mixing box, and a discharging pipe is arranged in the middle of the lower end of the mixing box. A scraping assembly is arranged in the mixing box and comprises a circular scraping plate, racks, a gear, a motor and a sliding sleeve, the motor is fixed in the mixing box, the output end of the motor is fixedly connected with the gear through a rotating shaft, the gear is meshed with the racks on the two sides, the upper end of the sliding sleeve is fixed to the inner wall of the mixing box, and the racks are slidably arranged at the lower end of the sliding sleeve; the screening plate is arranged below the discharging pipe, the driving guide rails comprise the X guide rail and the Y guide rail, the screening plate is arranged on the X guide rail, the X guide rail is arranged on the Y guide rail, the spraying head is arranged at the rear end of the screening plate, and the collecting boxes are arranged below the screening plate and the spraying head respectively.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the tin ball processing device field relates to a kind of electroplating tin ball surface bright treatment device. BACKGROUND

[0002] With the development of electronic products to the light thin small and the diversification of function, it forces the packaging technology of integrated circuit to follow high density, miniaturization and high integration, and the integrated circuit IC changes from the four-edge pin architecture (QFP) to the ball grid array structure (BGA) packaging mode. Due to the enhancement of people's awareness of environmental protection, the production of lead-free tin ball is gradually eliminated and turns to lead-free tin ball. The composition materials of lead-free tin ball include Sn, Cu, Ag, In, Bi, Zn and Sb. The solder composed of these materials cannot reach the eutectic temperature and component composition ratio, so the tin ball surface produced will have silver copper segregation phenomenon, and the tin ball surface will produce fog-like protrusions, which will affect the brightness of the tin ball. The surface defects will affect the ball placement when the ball placement machine sucks the ball.

[0003] Therefore, in order to overcome the deficiencies in the prior art, a simple structure electroplating tin ball surface bright treatment device is needed. INVENTION CONTENTS

[0004] The utility model discloses a kind of electroplating tin ball surface bright treatment devices to solve the problems of prior art.

[0005] The utility model discloses a kind of electroplating tin ball surface bright treatment devices, including: mixing box, sieve plate, spray head, drive guide rail and collection tank, the mixing box both sides are equipped with support and are rotated by power component drive, the mixing box upper end right side is equipped with feed pipe, the mixing box lower end middle part is equipped with discharge pipe, the mixing box is equipped with scraper component, the scraper component includes circular scraper, rack, gear, motor and sliding sleeve, the motor is fixed in mixing box and output end is fixedly connected gear by shaft, the gear engages the rack on both sides, the sliding sleeve upper end is fixed in mixing box inner wall and lower end is slidably arranged for rack, the circular scraper is fixed on the outer end of rack, the sieve plate is set in discharge pipe below, the drive guide rail includes X guide rail and Y guide rail, the sieve plate is set on X guide rail, X guide rail is set on Y guide rail, the spray head is set in the rear end of sieve plate, the collection tank is set below sieve plate and spray head respectively.

[0006] Further improvement, the sieve plate includes bottom plate screen and side baffle, the side baffle is fixed on the upper end of bottom plate screen.

[0007] Further improvement, the upper end of discharge pipe is equipped with conical opening.

[0008] Further improvement, the spray head is equipped with five groups at intervals.

[0009] Further improvement, the feed pipe and discharge pipe are provided with control valves.

[0010] Compared with the prior art, the tin-plated ball surface bright treatment device has the beneficial effects that:

[0011] The tin balls to be treated, the appropriate ceramic abrasive stone and the copper abrasive agent are added into the mixing box from the feed pipe, the mixing box is driven to rotate by the power assembly, the abrasive agent contacts the tin ball surface in the grinding process, the surface unevenness and defects are removed through physical friction, so that the surface finish of the tin ball is improved, after cleaning, the two groups of racks are driven to move synchronously to the side of the discharge pipe through the gear driven by the motor, and then the two groups of circular scrapers are pushed inward, the tin balls polished inside and the ceramic abrasive stone and the copper abrasive agent are pushed out and fall on the screening plate, so that the internal materials are pushed out completely without residual, the fine ceramic abrasive stone, the copper abrasive agent and the fine particles polished on the tin ball fall into the collecting box below through the back and forth movement of the X guide rail, after screening, the Y guide rail drives the screening plate to move backward so that the screening plate is located below the spray head, the tin ball is treated through spraying, the impurities and dust attached to the surface of the tin ball are removed, and the surface cleanliness is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic diagram of the utility model

[0013] Fig. 2 It is a structural schematic diagram of the utility model partial view

[0014] Fig. 3 It is a structural schematic diagram of the utility model material scraping assembly

[0015] In the drawing, 1 is a mixing box, 11 is a support, 12 is a power assembly, 13 is a feed pipe, 14 is a discharge pipe, 15 is a control valve, 2 is a screening plate, 21 is a bottom plate screen, 22 is a side baffle, 3 is a spray head, 4 is a driving guide rail, 41 is an X guide rail, 42 is a Y guide rail, 5 is a collecting box, 6 is a material scraping assembly, 61 is a circular scraper, 62 is a rack, 63 is a gear, 64 is a motor, and 65 is a sliding sleeve. DETAILED DESCRIPTION

[0016] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0017] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] The following will be described in conjunction with the embodiments and the accompanying Figs. 1-3 The technical scheme of the utility model is further described.

[0019] Example 1

[0020] A kind of tin plating ball surface bright treatment device, comprising: mixing box 1, screening plate 2, spray head 3, drive guide rail 4 and collection tank 5, the both sides of the mixing box 1 are equipped with support 11 and are rotated by power component 12 drive, the right side of the upper end of the mixing box 1 is equipped with feed pipe 13, the middle part of the lower end of the mixing box 1 is equipped with discharge pipe 14, the mixing box 1 is equipped with scraping assembly 6 in, the scraping assembly 6 includes circular scraper 61, rack 62, gear 63, motor 64 and sliding sleeve 65, the motor 64 is fixed in mixing box 1 and output end is fixedly connected gear 63 by rotating shaft, the gear 63 engages the rack 62 of both sides, the sliding sleeve 65 upper end is fixed in the inner wall of mixing box 1 and lower end is slidably arranged for rack 62, the circular scraper 61 is fixed to the outer end of rack 62, the screening plate 2 is arranged below discharge pipe 14, the drive guide rail 4 includes X guide rail 41 and Y guide rail 42, the screening plate 2 is arranged on X guide rail 41, the X guide rail 41 is arranged on Y guide rail 42, the spray head 3 is arranged at the rear end of screening plate 2, the collection tank 5 is arranged below screening plate 2 and spray head 3 respectively.

[0021] As Figs. 1-3 The utility model uses principle: the tin ball to be handled, appropriate ceramic abrasive stone and copper abrasive are added from feed pipe 13 to the inside of mixing box 1, mixing box 1 is rotated by power component 12 drive, abrasive contacts with tin ball surface in the process of grinding, removes unevenness and defect on the surface by physical friction, to improve the surface finish of tin ball, after cleaning, the motor 6 is removed gear 63 and drives two sets of rack 62 to move synchronously close to the side of discharge pipe 14, to further drive two sets of circular scraper 61 to push inward, tin ball and ceramic abrasive stone and copper abrasive polished inside are pushed out and fall on screening plate 2, ensure that internal material is all pushed out without remaining, the back and forth movement of X guide rail 41 on screening plate 2 makes fine ceramic abrasive stone, copper abrasive and the fine particles polished on tin ball fall into the collection tank 5 below, after screening, Y guide rail 42 drives to move back to make screening plate 2 be below spray head 3, tin ball is treated by spraying, removes the impurity dust attached to the surface of tin ball, further improves the cleanliness of surface.

[0022] As a further preferred embodiment, the screening plate 2 comprises a bottom plate screen 21 and a side baffle 22, the side baffle 22 is fixed on the upper end of the bottom plate screen 21, which ensures that the tin balls and the grinding agent can be effectively separated when the material passes through the screening plate 2, and prevents the tin balls from falling off from the side of the screening plate 2.

[0023] As a further preferred embodiment, the upper end of the discharge pipe 14 is provided with a tapered opening, which is designed to help the material flow out of the discharge pipe 14 more smoothly, reducing the blockage and residue of the material in the discharge pipe 14.

[0024] As a further preferred embodiment, the spray head 3 is spaced five groups. Five spray points are achieved by five groups of spray heads 3, which can ensure that the spraying liquid uniformly covers the material on the screening plate 2, and improves the spraying effect.

[0025] As a further preferred embodiment, the upper end of the discharge pipe 14 is provided with a tapered opening, which is designed to help the material flow out of the discharge pipe 14 more smoothly, reducing the blockage and residue of the material in the discharge pipe 14.

[0026] The above describes the preferred embodiments of the present application. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the present application shall be within the scope of protection determined by the claims.

Claims

1. A surface brightening treatment device for electroplated tin balls, characterized in that: include: A mixing box, a screening plate, a spray head, a driving guide rail and a collecting box. Brackets are provided on both sides of the mixing box and are driven to rotate by a power assembly. A feed pipe is provided on the right side of the upper end of the mixing box, and a discharge pipe is provided in the middle of the lower end of the mixing box. A scraper assembly is provided in the mixing box, and the scraper assembly includes a circular scraper, a rack, a gear, a motor and a sliding sleeve. The motor is fixed in the mixing box and the output end is fixedly connected to the gear through a rotating shaft. The gear meshes with the racks on both sides. The upper end of the sliding sleeve is fixed to the inner wall of the mixing box and the lower end is provided with a rack for sliding. The circular scraper is fixed to the outer end of the rack. The screening plate is arranged below the discharge pipe. The driving guide rail includes an X guide rail and a Y guide rail. The screening plate is arranged on the X guide rail, and the X guide rail is arranged on the Y guide rail. The spray head is arranged at the rear end of the screening plate, and the collecting box is respectively arranged below the screening plate and the spray head.

2. The surface brightening treatment device for electroplated tin balls according to claim 1, characterized in that: The screening plate comprises a bottom plate screen and side baffles, and the side baffles are fixed to the upper end of the bottom plate screen.

3. The surface brightening treatment device for electroplated tin balls according to claim 1, characterized in that: The upper end of the discharge pipe is provided with a tapered opening.

4. The surface brightening treatment device for electroplated tin balls according to claim 1, characterized in that: The spray heads are arranged in five groups at intervals.

5. The surface brightening treatment device for electroplated tin balls according to claim 1, characterized in that: The feed pipe and the discharge pipe are provided with control valves.