Tin powder multi-stage screening device for solder paste production
By setting up an ion generator and multi-stage module screening disk in the tin powder screening device, the problems of electrostatic agglomeration and screen clogging during the tin powder screening process are solved, and efficient and flexible tin powder screening is achieved, which improves production efficiency and accuracy.
Patent Information
- Application Number
- CN202422121077.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Existing tin powder screening devices are prone to agglomeration due to electrostatic effects, resulting in clogging of screen pores, affecting screening efficiency and accuracy, and are difficult to adapt to screening needs of different particle size distributions, and replacement and cleaning are cumbersome.
It adopts a multi-stage module screen disk structure, and each module screen disk is equipped with an ion generator, which reduces agglomeration by generating ion neutralizing tin powder charge; the module screen disk is removable, flexibly adjusts the number of screen layers, and accelerates the screening through a vibrator and support spring. The screen can be removed and replaced and cleaned easily.
It effectively reduces tin powder agglomeration, improves screening efficiency and accuracy, simplifies the screen replacement and cleaning process, adapts to the needs of different particle size distributions, and improves production efficiency and flexibility.
Smart Images
Figure CN223056125U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tin powder production, and particularly relates to a multi-stage screening device for tin powder used in solder paste production. Background Art
[0002] As an important material in electronic product manufacturing, the quality of solder paste directly affects the welding effect and the reliability of the final product. In the production process of solder paste, the quality control of tin powder is particularly important. The particle size distribution of tin powder directly affects the rheology, printing performance of solder paste, and the appearance and strength after solder joints are formed. Therefore, precise screening treatment of tin powder is crucial.
[0003] In related technologies, the screening method for tin powder mainly uses single-layer screening or multi-layer fixed screen structures for screening, and combines vibration to make tin powder pass through screens with different pore sizes, so as to achieve the purpose of hierarchical screening.
[0004] However, when screening tin powder by the above methods, since tin powder particles are prone to agglomerate due to electrostatic action, especially during fine particle size screening, it is easy to cause the pores of the screen to be blocked, affecting the screening efficiency and accuracy. In addition, the existing screening devices often have difficulty adapting to the screening requirements of different particle size distributions, and it is relatively cumbersome to replace different specifications of screens, and it is not easy to adjust. Moreover, especially for the screening structure of multi-layer fixed screens, the subsequent cleaning and maintenance workload is large, affecting the production efficiency. Summary of the Utility Model
[0005] The utility model aims to solve at least one of the technical problems in the above technologies to a certain extent.
[0006] To achieve the above object, a multi-stage screening device for tin powder used in solder paste production is proposed in the first aspect of the utility model, including: a chassis, a module sieve plate, a vibrator, and a support spring, wherein a first discharge port extending outwards is communicated on the chassis; a plurality of the module sieve plates are detachably arranged on the chassis in sequence from top to bottom. The module sieve plate includes an installation cylinder, a sieve mesh, a second discharge port, a funnel, and an ion generator. Among them, the sieve mesh is detachably arranged in the installation cylinder; the second discharge port is communicated and extends out of the installation cylinder, and the second discharge port is located above the sieve mesh; the funnel is arranged below the sieve mesh, and the discharge end of the funnel is a strip-shaped opening; the ion generator is arranged in the installation cylinder, and the generating end of the ion generator is located at the discharge end of the funnel; the vibrator is arranged at the center of the bottom of the chassis; and a plurality of the support springs are respectively arranged equidistantly along the circumferential direction of the chassis.
[0007] In addition, the multi-stage screening device for tin powder used in solder paste production proposed by the utility model as above may also have the following additional technical features:
[0008] As a further description of the above technical solution: A ring is provided inside the installation cylinder, and the screen is installed on the ring by means of bolt locking.
[0009] As a further description of the above technical solution: The second discharge ports of multiple module sieve trays are staggered.
[0010] As a further description of the above technical solution: Matching card slot openings are respectively provided at the top and bottom of the installation cylinder.
[0011] As a further description of the above technical solution: A grounding wire connected to the ground is provided at the bottom of the chassis.
[0012] As a further description of the above technical solution: A support plate is provided at the bottom of the support spring, and the support plate is installed on the ground.
[0013] As a further description of the above technical solution: A detachable top cover is provided on the module sieve tray at the top.
[0014] As a further description of the above technical solution: An arc-shaped portion that sinks downward is provided at the screen near the second discharge port to facilitate discharging.
[0015] As a further description of the above technical solution: The screen apertures in multiple module sieve trays decrease sequentially from top to bottom.
[0016] In the tin powder multi-stage screening device for solder paste production according to the present utility model, by providing an ion generator in each module sieve tray, it is possible to effectively reduce the agglomeration of tin powder due to electrostatic action during the screening process, thereby reducing the clogging of the screen pores, ensuring the smooth progress of the screening process, and moreover, in the way that multiple module sieve trays are detachable, the number of screening layers can be flexibly increased or decreased according to actual needs, effectively improving the screening efficiency and accuracy, and at the same time improving the convenience of subsequent cleaning.
[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, wherein:
[0019] Figure 1 is a schematic structural diagram of a tin powder multi-stage screening device for solder paste production according to an embodiment of the present utility model;
[0020] Figure 2It is a schematic structural diagram of a tin powder multi-stage screening device for solder paste production according to another embodiment of the present utility model;
[0021] Figure 3 It is a schematic structural diagram of a module sieve tray according to an embodiment of the present utility model;
[0022] Figure 4 It is a schematic structural diagram of a module sieve tray according to another embodiment of the present utility model;
[0023] Figure 5 It is a schematic internal structure diagram of a module sieve tray according to an embodiment of the present utility model;
[0024] Figure 6 It is a schematic structural diagram of a chassis according to an embodiment of the present utility model;
[0025] As shown in the figure:
[0026] 100, chassis; 101, first discharge port; 200, module sieve tray; 201, ring; 210, mounting cylinder; 220, sieve mesh; 230, second discharge port; 240, funnel; 250, ion generator; 300, vibrator; 400, support spring; 500, grounding wire; 600, top cover. Detailed implementation manners
[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, but should not be construed as limiting the present utility model.
[0028] The tin powder multi-stage screening device for solder paste production according to the embodiment of the present utility model will be described below with reference to the drawings.
[0029] As Figure 1 shown, the tin powder multi-stage screening device for solder paste production according to the embodiment of the present utility model may include a chassis 100, a module sieve tray 200, a vibrator 300, and a support spring 400.
[0030] Among them, as Figure 6 shown, a first discharge port 101 extending outwards is communicated on the chassis 100, and a plurality of module sieve trays 200 are detachably arranged on the chassis 100 in sequence from top to bottom.
[0031] It should be noted that relevant staff can increase or decrease the number of module sieve trays 200 according to specific screening requirements.
[0032] As Figures 3 to 5As shown, the modular sieve tray 200 includes an installation cylinder 210, a sieve mesh 220, a second discharge port 230, a funnel 240, and an ion generator 250.
[0033] Among them, the sieve mesh 220 is detachably arranged inside the installation cylinder 210. The second discharge port 230 is connected and extends outside the installation cylinder 210, and the second discharge port 230 is located above the sieve mesh 220. The funnel 240 is arranged below the sieve mesh 220, and the discharge end of the funnel 240 is a strip-shaped opening. The ion generator 250 is arranged inside the installation cylinder 210, and the generating end of the ion generator 250 is located at the discharge end of the funnel 240.
[0034] As a possible case, the ion generator 250 includes a power supply and a plate-shaped generating head. The plate-shaped generating head is fixed inside the installation cylinder 210 through a support frame and is close to the strip-shaped opening of the funnel 240 to ensure effective coverage of the area at the discharge end of the funnel 240. When the tin powder passes through the sieve mesh 220 and is discharged through the funnel 240, the ion generator 250 generates a large number of ions, which can quickly neutralize the charges that may exist on the surface of the tin powder. The tin powder after charge neutralization is not easily adsorbed with impurities, thereby improving the purity and efficiency of screening.
[0035] It should be noted that the pore diameters of the sieve meshes 220 in multiple modular sieve trays 200 decrease sequentially from top to bottom. Then the tin powder sequentially falls from the top sieve mesh 220 into the chassis 100, thereby realizing multi-stage screening.
[0036] The vibrator 300 is arranged at the center of the bottom of the chassis 100, and multiple support springs 400 are respectively arranged equidistantly along the circumferential direction of the chassis 100.
[0037] Specifically, when the relevant staff screens the tin powder, first, pour the tin powder onto the topmost modular sieve tray 200, and then start the vibrator 300. The vibrator 300 drives the chassis 100 and multiple modular sieve trays 200 to vibrate and cooperate with the support springs 400 to accelerate the screening process.
[0038] After the tin powder passes through the sieve mesh 220 in sequence and with the vibration of the vibrator 300, the tin powder with different particle sizes is respectively discharged from the corresponding second discharge ports 230. After the finest tin powder falls onto the chassis 100, through the cooperation of the vibration of the vibrator 300 and the support springs 400, it finally discharges from the first discharge port 101 to complete multi-stage screening.
[0039] Among them, when screening tin powder from the module sieve tray 200, it first passes through the screening of the sieve mesh 220. The tin powder with large particle size remains on the sieve mesh 220, and the tin powder with small particle size falls below the sieve mesh 220 and slides out along the funnel 240. When passing through the funnel 240, due to the action of the ion generator 250, the charge on the tin powder can be removed, avoiding the agglomeration of tin powder due to static electricity caused by the charged tin powder, and preventing the tin powder from clogging on the sieve mesh 220.
[0040] When the product specifications of the tin powder change, for example, as the customer's requirements for the performance of the solder paste increase, the requirements for tin powder with different particle size distributions will also become higher. Then, the relevant staff can increase the number of module sieve trays 200 and replace the sieve meshes 220 with different pore sizes to achieve the purpose of flexible production.
[0041] In an embodiment of the present utility model, a ring 201 is arranged inside the mounting cylinder 210, and the sieve mesh 220 is mounted on the ring 201 by means of bolt locking.
[0042] The relevant staff can replace the sieve mesh 220 according to different screening requirements, that is, by removing the bolts, the replacement of the sieve mesh 220 can be realized. In addition, when deeply cleaning the sieve mesh 220, the sieve mesh 220 can also be removed for flushing and cleaning.
[0043] In an embodiment of the present utility model, the second discharge ports 230 of multiple module sieve trays 200 are arranged staggeredly.
[0044] It should be noted that through the staggeredly arranged second discharge ports 230, it is convenient for the relevant staff to collect the screened tin powder. In addition, the second discharge port 230 can be externally connected to a suction pipeline. After the screening is completed, the tin powder on the sieve mesh 220 corresponding to the second discharge port 230 is directly sucked out by the suction pipeline, improving the discharge efficiency.
[0045] In an embodiment of the present utility model, mutually matching card slot openings are respectively formed at the top and bottom of the mounting cylinder 210.
[0046] It should be noted that when multiple module sieve trays 200 are arranged in sequence from top to bottom, the bottom of the upper mounting cylinder 210 is connected to the top of the lower mounting cylinder 210 through the mutually matching card slot openings and locked by bolts.
[0047] In another embodiment of the present utility model, thread grooves are respectively arranged at the top and bottom of the mounting cylinder 210. Then, when installing multiple module sieve trays 200, the upper and lower adjacent mounting cylinders 210 are connected by threads.
[0048] To further reduce the static electricity generated during the screening process of the tin powder, a ground wire 500 connected to the ground is provided at the bottom of the chassis 100. Additionally, a support plate is provided at the bottom of the support spring 400, and the support plate is installed on the ground.
[0049] In an embodiment of the present utility model, as Figure 2 shown, a detachable top cover 600 is provided on the top module sieve tray 200.
[0050] It should be noted that when the relevant staff screens the tin powder, they pour the tin powder onto the top module sieve tray 200. To avoid the tin powder flying due to the vibration of the vibrator 300, the relevant staff can cover the top cover 600 on the top module sieve tray 200.
[0051] In an embodiment of the present utility model, an arc-shaped portion that sinks downward is provided at the sieve mesh 220 near the second discharge port 230 to facilitate discharging.
[0052] It should be noted that with the cooperation of the vibration of the vibrator 300 and the support spring 400, the screened tin powder stays on the corresponding sieve tray and gradually moves along the downward-sinking arc-shaped portion to the corresponding second discharge port 230 to accelerate discharging.
[0053] In summary, for the multi-stage screening device for tin powder used in solder paste production according to the embodiments of the present utility model, by providing an ion generator 250 in each module sieve tray 200, it can effectively reduce the agglomeration of tin powder due to electrostatic action during the screening process, thereby reducing the clogging of the pores of the sieve mesh 220, ensuring the smooth progress of the screening process. Moreover, the detachable manner of multiple module sieve trays 200 can flexibly increase or decrease the number of screening layers according to actual needs, effectively improving the screening efficiency and accuracy, and at the same time improving the convenience of subsequent cleaning.
[0054] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0055] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0056] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.
Claims
1. A multi-stage screening device for tin powder used in solder paste production, characterized in that, Including: A chassis (100), a modular sieve tray (200), a vibrator (300) and a support spring (400), wherein, A first discharge port (101) extending outwards is communicated with the chassis (100); A plurality of the modular sieve trays (200) are detachably arranged on the chassis (100) in sequence from top to bottom. The modular sieve tray (200) includes a mounting cylinder (210), a sieve mesh (220), a second discharge port (230), a funnel (240) and an ion generator (250), wherein, The sieve mesh (220) is detachably arranged inside the mounting cylinder (210); The second discharge port (230) is communicated with and extends outwards beyond the mounting cylinder (210), and the second discharge port (230) is located above the sieve mesh (220); The funnel (240) is arranged below the sieve mesh (220), and the discharge end of the funnel (240) is a strip-shaped opening; The ion generator (250) is arranged inside the mounting cylinder (210), and the generating end of the ion generator (250) is located at the discharge end of the funnel (240); The vibrator (300) is arranged at the center of the bottom of the chassis (100); A plurality of the support springs (400) are equidistantly arranged along the circumferential direction of the chassis (100).
2. The multi-stage screening device for tin powder used in solder paste production according to claim 1, wherein A ring (201) is arranged inside the mounting cylinder (210), and the sieve mesh (220) is mounted on the ring (201) by means of bolt locking.
3. The multi-stage screening device for solder powder used in solder paste production according to claim 1, wherein, The second discharge ports (230) of the plurality of modular sieve trays (200) are staggered.
4. The multi-stage screening device for tin powder used in solder paste production according to claim 1, wherein, Mutually matching card slot openings are respectively formed in the top and bottom of the mounting cylinder (210).
5. The multi-stage sieving device for tin powder used in solder paste production according to claim 1, wherein, A grounding wire (500) connected to the ground is arranged at the bottom of the chassis (100).
6. The multi-stage screening device for tin powder used in solder paste production according to claim 1, wherein, A support plate is arranged at the bottom of the support spring (400), and the support plate is mounted on the ground.
7. The multi-stage sieving device for tin powder used in solder paste production according to claim 1, characterized in that, A detachable top cover (600) is arranged on the top modular sieve tray (200).
8. The multi-stage screening device for tin powder used in solder paste production according to claim 1, characterized in that, An arc-shaped portion that sinks downwards is arranged on the sieve mesh (220) near the second discharge port (230) to facilitate discharging.
9. The multi-stage sieving device for tin powder used in solder paste production according to claim 1, wherein, The pore diameters of the sieve meshes (220) in the plurality of modular sieve trays (200) decrease sequentially from top to bottom.