A post-plastic packaging batch edge removal jig

Abstract

The utility model belongs to but is not limited to electronic device manufacturing technical field discloses a kind of plastic package post batch edge removal fixture, comprising: a base;A needle seat, is installed on the base;Multiple needles, are set on the needle seat, and can slide along vertical direction;A needle seat back cover, is installed on the rear side of the needle seat, for limiting the needle;A left edge strip and a right edge strip are respectively installed on the both sides of the base;Multiple sliders and multiple slider seats, the slider is along light pole guide setting, connects the left edge strip and right edge strip;A push material assembly and a lower material scraping assembly are respectively arranged in the lower part and upper part of the base;Multiple side edge overflow pins are installed on the inner side of the left edge strip and the right edge strip;A head batch edge scraping plate is fixed to the front end of the push material assembly;A scraping plate pressing strip is pressed to the front end of the head batch edge scraping plate;A positioning pin and a positioning pin handle are arranged on the base.

Description

Technical Field

[0001] This utility model belongs to, but is not limited to, the field of electronic device manufacturing technology, and particularly relates to a burr removal fixture after plastic sealing. Background Technology

[0002] After encapsulating the second-stage plastic-molded product, the burrs need to be removed manually. However, the overflow on both sides of the product cannot be removed manually. To remove the overflow manually, a steel plate is used to scrape the head of the plastic-molded body from both sides. After the plastic-molded body is cured, it is very hard, and it is difficult to remove the burrs completely by manually scraping with a steel plate. There is a risk of external feedback if the overflow occurs.

[0003] Based on the above analysis, the urgent technical problems that need to be solved by the existing technology are: the existing technology is difficult to remove the burrs from the plastic sealant completely, the plastic sealant is very hard after curing, the manual scraping of the plastic sealant with a steel plate is not effective and is easy to miss; and the overflow on both sides of the plastic sealant cannot be removed.

[0004] In the prior art, a burr removal fixture for edge shaping of packaged devices mainly includes a fixing base, a limiting block, a clamping plate, and multiple scraping devices for side-edge removal. While this device can remove burrs from the sealing edges of devices to a certain extent, its structure is primarily for single-sided processing, lacking a precise mechanism for handling gaps between pins and residual material at the bottom, making it difficult to meet the batch processing requirements of high-density, multi-pin packages. The main problems with this technology are: first, the lack of a piercing structure design prevents it from penetrating deep into the gaps between pins of the package to remove vertical burrs; second, its operation relies on single-sided or manual batch processing, lacking a coordinated structure for removing residual material from the head, bottom, and multiple sides, resulting in low cleaning efficiency and poor consistency; third, the lack of a standardized guiding structure and modular adjustable components leads to poor fixture adaptability, hindering the rapid replacement and precise clamping of different package models.

[0005] In the field of semiconductor packaging, CN115172314A discloses a fixture for loading package structures and a corresponding deburring method. The fixture consists of a support plate and a cover plate. The support plate has multiple placement slots and support structures, and the underside of the cover plate has limiting structures corresponding to each support structure to fix the cut package structures and prevent them from colliding with each other, thereby reducing surface scratches. The fixture base and positioning pin structure are also used to fix and prevent friction scratches, but no dedicated deburring components are involved. Furthermore, while early gear planer technology combined with a deburring mechanism (US2871764A) achieved burr removal synchronously with cutting, it focused on the metal gear forming process and did not address the dedicated removal of residual material edges on the sides and top of the molded parts.

[0006] None of the aforementioned existing technologies address the integrated design of the side overflow needle and the head burr scraper after molding:

[0007] 1) It cannot meet the multi-point deburring requirements of the overflow material on both sides and head of the plastic seal, and lacks multi-directional, adjustable scraper or needle array components to thoroughly remove residual valve material on the sides and head.

[0008] 2) Relying solely on fixed limits to prevent scratches lacks precise pressure control and sliding guide devices (such as smooth rod and slider structures) for burrs of different heights, resulting in unstable deburring quality and requiring extensive manual intervention.

[0009] In addition, these solutions generally lack multi-axial slider guidance and pressure bar pressing design, making it impossible to efficiently and automatically process high-volume molding components. In practical applications, they still rely on repeated adjustments by operators, and the production efficiency and finished product consistency are difficult to meet the needs of mass packaging production lines. Utility Model Content

[0010] To address the problems existing in the prior art, this utility model provides a fixture for removing burrs after plastic sealing.

[0011] This utility model is implemented as follows: a burr removal fixture after plastic sealing, comprising:

[0012] A base;

[0013] A needle holder is installed on the base;

[0014] Multiple needles are mounted on the needle holder and can slide along the vertical direction;

[0015] A needle holder rear cover is installed on the rear side of the needle holder to limit the needle;

[0016] A left strip and a right strip are respectively installed on both sides of the base;

[0017] Multiple sliders and multiple slider seats, wherein the sliders are arranged along the guide rod and connect the left and right bars;

[0018] An upper pushing component and a lower scraping component are respectively disposed at the lower part and the upper part of the base;

[0019] Multiple side overflow removal needles are installed on the inner sides of the left and right strips;

[0020] A deburring scraper is fixed to the front end of the upper pusher assembly;

[0021] A scraper strip is pressed onto the front end of the deburring scraper;

[0022] A positioning pin and a positioning pin handle are provided on the base;

[0023] The needle, the side overflow removal needle, and the scraper come into contact with the plastic sealant manually or mechanically.

[0024] Furthermore, the number of needles is fifteen, which are evenly spaced along a straight line on the needle holder.

[0025] Furthermore, the connection between the slider and the slider seat is achieved through threads and positioning grooves, and there are four sliders, which are respectively set at both ends of the optical rod.

[0026] Furthermore, the number of the side overflow removal needles is fourteen, which are respectively set on the inner side of the left and right strips and are evenly distributed along the length direction.

[0027] Furthermore, the upper pushing assembly includes a pressure block and a threaded lifting structure, and the lower scraping assembly includes a sliding scraper and a manual control handle.

[0028] Furthermore, the base is provided with multiple sets of through holes for mounting hexagon socket screws and countersunk screws, and the screw types include M5×25, M8×16, M5×20, M4×8, M4×15, M3×10, M10×45 and M2×3 set screws.

[0029] This invention removes excess material from the plastic sealant. The plastic sealant production process involves 16 products per mold. After plastic sealant production, all 16 products are placed into a fixture. The fixture can limit the product height, align the product width, and remove the burrs from the plastic sealant in one go. It can also remove excess material from both sides of the plastic sealant at the same time.

[0030] This solution achieves significant technological advancements in the deburring process of molded parts through the synergistic effect of various key components:

[0031] Firstly, in terms of positioning and height adaptive adjustment, the combination of the needle holder and the sliding needle with the needle holder back cover limit design, as well as the positioning pin and handle on the base, allows the plastic-sealed parts to be quickly and accurately fixed before deburring, and can be finely adjusted according to the product thickness or burr height, avoiding the problem of missed inspection or repeated processing caused by positioning deviation, effectively improving the consistency and yield of deburring.

[0032] Secondly, in terms of multi-axial guidance and pressure control, the left and right side guide mechanism composed of the guide rod and slider, together with the upper and lower pusher and scraper components, achieves rigid support and stable conveying of the workpiece. The upper pusher component provides pre-pressure feeding, and the lower scraper component, together with the scraper pressure strip, achieves constant pressure output, which can ensure the deburring force while avoiding scratches on the surface of the molded parts, making it suitable for continuous operation in high-speed automated production lines.

[0033] Third, in terms of multi-point coverage deburring, the side overflow needles perform dot-matrix piercing and extrusion on the residual material on both sides of the molded part, while the head scraper scrapes the entire contour of the end cap. The combination of the two not only expands the deburring range but also enables the classification and treatment of burrs in different parts. Deburring of multiple areas such as the sides and head can be completed in one pass, significantly improving processing efficiency and reducing reliance on manual adjustment and inspection. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the burr removal fixture provided in this embodiment of the utility model;

[0035] Figure 2 This is a schematic diagram of the bottom surface of the burr removal fixture after plastic sealing provided in this embodiment of the utility model;

[0036] Figure 3 This is a schematic diagram of the base provided in an embodiment of the present utility model;

[0037] Figure 4 This is a schematic diagram of the needle threading seat provided in an embodiment of the present utility model;

[0038] Figure 5 This is a schematic diagram of threading a needle provided in an embodiment of this utility model;

[0039] Figure 6 This is a schematic diagram of the needle-threading seat back cover provided in an embodiment of the present utility model;

[0040] Figure 7 This is a schematic diagram of the left side strip provided in an embodiment of the present utility model;

[0041] Figure 8 This is a schematic diagram of the right strip provided in an embodiment of the present utility model;

[0042] Figure 9 This is a schematic diagram of the slider provided in an embodiment of the present utility model;

[0043] Figure 10 This is a schematic diagram of the optical rod provided in an embodiment of the present invention;

[0044] Figure 11 This is a schematic diagram of the slider seat provided in an embodiment of the present utility model;

[0045] Figure 12 This is a schematic diagram of the material pushing upward provided in an embodiment of this utility model;

[0046] Figure 13 This is a schematic diagram of the scraping process provided in an embodiment of the present invention;

[0047] Figure 14 This is a schematic diagram of the side overflow removal needle provided in an embodiment of the present invention;

[0048] Figure 15 This is a schematic diagram of the deburring scraper provided in this embodiment of the utility model;

[0049] Figure 16 This is a schematic diagram of the scraper strip provided in an embodiment of the present utility model;

[0050] Figure 17 This is a schematic diagram of the lower scraper handle provided in an embodiment of the present utility model;

[0051] Figure 18 This is a schematic diagram of the positioning pin handle provided in an embodiment of this utility model;

[0052] Figure 19 This is a schematic diagram of the positioning pin provided in an embodiment of the present utility model;

[0053] In the diagram: 1. Base; 2. Needle holder; 3. Needle; 4. Needle holder back cover; 5. Left side strip; 6. Right side strip; 7. Slider; 8. Smooth rod; 9. Slider seat; 10. Upper pusher assembly; 11. Lower scraper assembly; 12. Side overflow removal needle; 13. Head burr removal scraper; 14. Scraper pressure strip; 15. Lower scraper handle; 15-1. Top view of lower scraper handle; 15-2. Side view of lower scraper handle; 15-3. Front view of lower scraper handle; 16. Positioning pin handle; 17. Positioning pin. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0055] like Figure 1 As shown, this utility model provides a burr removal fixture after plastic sealing, comprising:

[0056] One base 1;

[0057] A needle holder 2 is installed on the base 1;

[0058] Multiple needles 3 are disposed on the needle holder 2 and can slide in the vertical direction;

[0059] A needle holder rear cover 4 is installed on the rear side of the needle holder 2 to limit the needle 3;

[0060] A left strip 5 and a right strip 6 are respectively installed on both sides of the base 1;

[0061] Multiple sliders 7 and multiple slider seats 9, wherein the sliders 7 are guided along the light rod 8 and connect the left bar 5 and the right bar 6;

[0062] An upper pushing component 10 and a lower scraping component 11 are respectively disposed at the lower part and the upper part of the base 1;

[0063] Multiple side overflow needles 12 are installed inside the left side strip 5 and the right side strip 6;

[0064] A head-removing scraper 13 is fixed to the front end of the upper pusher assembly 10;

[0065] A scraper strip 14 is pressed onto the front end of the head-removing scraper 13;

[0066] A positioning pin 17 and a positioning pin handle 16 are disposed on the base 1;

[0067] The needle 3, the side overflow needle 12, and the head burr remover scraper 13 contact the plastic sealant manually or mechanically.

[0068] Furthermore, the number of needles 3 is fifteen, which are evenly spaced along a straight line on the needle holder 2.

[0069] Furthermore, the connection between the slider 7 and the slider seat 9 is achieved through threads and positioning grooves. There are four sliders 7, which are respectively set at both ends of the light rod 8.

[0070] Furthermore, there are fourteen side overflow needles 12, which are respectively set on the inner side of the left strip 5 and the right strip 6 and are evenly distributed along the length direction.

[0071] Furthermore, the upper pushing assembly 10 includes a pressure block and a threaded lifting structure, and the lower scraping assembly 11 includes a slidable scraper and a manual control handle.

[0072] Furthermore, the base 1 is provided with multiple sets of through holes for mounting hexagon socket screws and countersunk screws. The screw types include M5×25, M8×16, M5×20, M4×8, M4×15, M3×10, M10×45 and M2×3 set screws.

[0073] When this fixture is in operation, the plastic-sealed part to be deburred is first placed on the base 1 and accurately positioned by the positioning pin 17 and the positioning pin handle 16. Then, the fifteen needles 3 on the needle holder 2 are used to slightly puncture and position the plastic-sealed part in the vertical direction, so that the plastic-sealed part remains stable and does not shift during the side and head removal operations.

[0074] The fourteen side overflow removal needles 12 are manually or mechanically driven to press from the left and right sides (inner sides of the left strip 5 and the right strip 6) toward the side of the molded part. In conjunction with the four sliders that are set along the guide rod 8 and connected by the slider 7 and the slider seat 9 by threads and positioning grooves, the initial removal of side overflow is completed.

[0075] The pressure block in the upper push assembly 10 lifts the head of the plastic sealant from bottom to top under the action of the threaded lifting structure, so that the head burr is fully exposed; the scraper pressure strip 14 at the front end of the head burr scraper 13 further presses the head of the plastic sealant, and the head burr is completely scraped off by the relative sliding between the scraper 13 and the plastic sealant; if more fine adjustment is required, it can be used with the sliding scraper and manual control handle in the lower scraper assembly 11 for secondary trimming.

[0076] To ensure the long-term reliable operation of each component, the base 1 is provided with multiple sets of through holes for mounting hexagon socket screws and countersunk screws (models include M5×25, M8×16, M5×20, M4×8, M4×15, M3×10, M10×45 and M2×3 set screws). The needle holder rear cover 4 provides a rearward limit for the needle 3 to prevent displacement or detachment during repeated reciprocating operations.

[0077] The burr removal fixture provided in this embodiment of the utility model includes:

[0078] The set includes: base *1, needle holder *1, needles *15, needle holder back cover *1, left side strip *1, right side strip *1, slider *4, slider seat *4, smooth rod *2, upper pusher *1, lower scraper *1, side overflow removal needle *14, head burr removal scraper *1, scraper pressure strip *1, lower scraper handle *1, positioning pin *2, positioning pin handle *2. The assembly screws used are: M5 socket head cap screws *2515, M8 socket head cap screws *168, M5 socket head cap screws *2016, M4 countersunk screws *87, M4 socket head cap screws *154, M3 socket head cap screws *108, M2 set screws *314, and M10 socket head cap screws *453.

[0079] The method of using the jig includes:

[0080] The first step is to place 16 products into the fixture.

[0081] The second step is to push the material upwards into the needle and fix it in place using a positioning pin.

[0082] The third step is to pull down the scraper handle to remove the burrs.

[0083] The base 1 serves as the support platform for the entire fixture, and its multi-hole arrangement enables precise installation of components such as the needle holder 2 and the slider holder 9. The positioning pin 17 and its matching handle are used to precisely limit the workpiece during fixture assembly and use, ensuring consistency in subsequent burr removal. The four corners of the base 1 are connected to the column using threaded holes and hex socket screws, providing vertical installation space for each functional module. The high-precision design of the positioning system effectively prevents product clamping misalignment, improving the consistency and stability of burr removal.

[0084] The needle holder 2 and the needle 3 are used together to form a longitudinal puncture removal system. Through a drive mechanism or manual operation, the needle 3 is sequentially inserted into the gaps between the pins of the encapsulated product, breaking through accumulated edge burrs. The arrangement of the needles 3 is precisely set according to the pin spacing of the product, and the puncture path is controlled within the acceptable range of the package to avoid damage to the package itself. The rear cover 4 of the needle holder restricts the direction of needle movement and ensures uniform puncture depth through limiting holes, solving the problem of traditional burrs not being easily removed completely.

[0085] Four sliders 7, combined with slider seats 9, form a left and right guide mechanism. The sliders 7 are embedded on both sides of the guide rod 8, cooperating with the guide rod 8 to achieve precise linear sliding, pushing the left strip 5 and the right strip 6 to move closer or separate synchronously. The side-edge trimming needles 12 assembly, mounted on the side strips, advances towards the side of the molded part during sliding, penetrating deep between the encapsulation contour and the overflow interface, removing the side-edge burrs through cutting or crushing. The sliding distance is adjustable to adapt to different package sizes, thus solving the problem of uneven processing in traditional manual trimming.

[0086] The fixture features an upper pusher and a lower scraper with an alternating vertical action: the upper pusher uses a screw and pressure bar structure to vertically press or lift the molded part against the positioning surface; the lower scraper is equipped with a handle (lower scraper handle) that allows manual pushing of the scraper blade along the bottom edge of the molded part. This structure simultaneously treats burrs at the top and bottom of the product, and the lower scraper, in particular, allows for changing the blade angle according to different product shapes, thus solving the problem of difficult-to-handle residue at the bottom edge caused by uneven molding.

[0087] An independent scraper assembly is provided to handle residual burrs on the product head or front. A scraper pressure strip 14 is used to press the scraper firmly, fixing its angle and depth. A micro-gap fit is maintained between the scraper and the product, allowing for high-precision cutting of the burrs during operation. Since the residual material at the head may have irregular shapes and uneven distribution, the module's set angle and pressure can be finely adjusted via screws, achieving compatibility with various packaging structures and improving the fixture's versatility.

[0088] This fixture utilizes screws of various sizes to assemble the structure and secure components. M10*45 screws are used to secure the main load-bearing parts, ensuring overall rigidity is not compromised by the impact of shaving during operation. Smaller screws, such as M2*3 set screws, are used for positioning the pins and fine-tuning the scraper. This multi-point screw connection not only ensures secure assembly of each component but also enhances the modularity of the structure, facilitating the replacement of consumable parts. Compared to the cumbersome disassembly and assembly of existing fixtures, this device significantly improves maintenance efficiency and extends service life through optimized screw layout.

[0089] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0090] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the technical scope disclosed in this utility model, and within the spirit and principles of this utility model, should be included within the protection scope of this utility model.

Claims

1. A burr removal fixture after plastic sealing, characterized in that, include: A base; A needle holder is mounted on the base; Multiple needles are mounted on the needle holder and can slide along the vertical direction; A needle holder rear cover is installed on the rear side of the needle holder to limit the needle; A left strip and a right strip are respectively installed on both sides of the base; Multiple sliders and multiple slider seats, wherein the sliders are arranged along the guide rod and connect the left and right bars; An upper pushing component and a lower scraping component are respectively disposed at the lower part and the upper part of the base; Multiple side overflow removal needles are installed on the inner sides of the left and right strips; A deburring scraper is fixed to the front end of the upper pusher assembly; A scraper strip is pressed onto the front end of the deburring scraper; A positioning pin and a positioning pin handle are provided on the base; The needle, the side overflow removal needle, and the scraper come into contact with the plastic sealant manually or mechanically.

2. The fixture according to claim 1, characterized in that, The number of needles is fifteen, which are evenly spaced along a straight line on the needle holder.

3. The fixture according to claim 1, characterized in that, The connection between the slider and the slider seat is achieved through threads and positioning grooves. There are four sliders, which are respectively set at both ends of the optical rod.

4. The fixture according to claim 1, characterized in that, The number of side overflow removal needles is fourteen, which are respectively set on the inner side of the left and right strips and are evenly distributed along the length direction.

5. The fixture according to claim 1, characterized in that, The upper pushing assembly includes a pressure block and a threaded lifting structure, and the lower scraping assembly includes a sliding scraper and a manual control handle.

6. The fixture according to claim 1, characterized in that, The base is provided with multiple sets of through holes for mounting hexagon socket screws and countersunk screws. The screw types include M5×25, M8×16, M5×20, M4×8, M4×15, M3×10, M10×45 and M2×3 set screws.

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