Frame for cleaning plastic package mold

Abstract

The utility model relates to the technical field of semiconductor packaging, and discloses a frame for cleaning a plastic package mold, which comprises a plurality of supporting frames arranged from left to right, supporting rods are arranged on the surfaces of the front side and the rear side of each supporting frame, a butt joint seat is arranged on the surface of the right side of each supporting frame, and a T-shaped rod is arranged on the surface of the left side of each supporting frame. A sliding hole is formed in the left end of the upper surface of the T-shaped rod, a sliding cavity is formed in the left end of the T-shaped rod, and a butt joint mechanism is arranged in the sliding cavity. The two adjacent supporting frames are connected through the T-shaped rods and the butt joint seats, the sliding plates are pulled rightwards to drive the butt joint rods to move out of the butt joint holes, the supporting frames can be pulled out upwards, the supporting frames needing to be replaced can be replaced conveniently, the whole frame does not need to be replaced, the maintenance cost is reduced, and the maintenance efficiency is improved. The four positioning plates in the positioning mechanism are attached to the four side surfaces of the interior of the supporting frame correspondingly, so that alignment of an inner cavity of the supporting frame and a mold cavity of the plastic package mold can be rapidly completed, and deviation between the inner cavity of the supporting frame and the mold cavity of the plastic package mold is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor packaging, in particular to a frame for cleaning a plastic packaging mold. Background Art

[0002] Injection molding packaging usually involves soldering the pads on the chip to the corresponding pins on the lead frame through metal wires, and then potting the chip, metal wires and inner pins in a resin material so that only the outer pins on the lead frame are exposed from the potted package, thereby assembling the electronic device;

[0003] As the reliability requirements for integrated circuits increase, the bonding force of the encapsulation resin gradually increases, and the contamination of the encapsulation mold becomes more and more serious, so the requirements for mold cleaning are also getting higher and higher. The existing mold cleaning technology makes button holes on the mold cleaning medium (metal frame / paper frame, etc.). The shape of the button holes is similar to the cross-section of the mold cavity, but the length and width of the button holes are smaller than the length and width of the cavity, that is, the area of ​​the button holes will be smaller than the cross-sectional area of ​​the cavity. The disadvantage is that it can only clean the mold cavity, but cannot clean the exhaust channels outside the encapsulation cavity (the exhaust channels are located on both sides of the cavity), which affects the mold cleaning effect and may lead to defective products.

[0004] A Chinese patent discloses a frame structure for cleaning plastic molds (authorization announcement number CN220129385U). This patented technology sets the length of the button holes to be greater than the length of the plastic mold cavity, allowing both the plastic mold cavity and the exhaust channels on both sides to be cleaned, effectively improving the mold cleaning effect. By setting the width of the button holes to be smaller than the width of the plastic mold cavity, it can ensure that the resin and the frame are firmly bonded, and the entire mold can be removed smoothly after plastic molding.

[0005] However, it has certain disadvantages: its overall structure is a frame body and multiple button holes opened on it. When one of the button holes is damaged, the entire frame body cannot be used and needs to be replaced, so the maintenance cost is high; and it aligns and positions the frame body by fitting the positioning holes on the frame body onto the positioning pins of the plastic encapsulation mold, but not every plastic encapsulation mold has positioning pins, so its scope of application is limited. Utility Model Content

[0006] The purpose of the present invention is to provide a frame for cleaning a plastic packaging mold to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A frame for cleaning plastic packaging molds includes multiple support frames arranged from left to right, support rods are installed on the front and rear surfaces of the support frames, a docking seat is installed on the right surface of the support frame, a docking hole is provided on the inner left surface of the docking seat, a T-shaped rod is installed on the left surface of the support frame, a sliding hole is provided on the left end of the upper surface of the T-shaped rod, and a sliding cavity is provided inside the left end of the T-shaped rod, and a docking mechanism is provided inside the sliding cavity.

[0009] As a further solution of the present invention: the docking mechanism includes a docking plate, a slide plate is installed on the upper surface of the docking plate, and slide rods are movably connected through the four corners of the docking plate, a docking rod is installed on the left surface of the docking plate, and a spring is installed on the right surface of the docking plate.

[0010] As a further solution of the present invention: the four internal side surfaces of the support frame, namely the front, back, left and right, are all provided with positioning mechanisms, and the positioning mechanism includes a positioning plate, a positioning block is installed on the upper end of the surface of the positioning plate close to the support frame, and a countersunk hole is opened on the surface of the positioning plate away from the support frame, and a positioning bolt is movable through the inside of the countersunk hole.

[0011] As a further solution of the present invention: the docking plate is located inside the sliding cavity, and the sliding plate is slidably connected to the inside of the sliding hole.

[0012] As a further solution of the present invention: the ends of the sliding rod are installed on the left and right side surfaces inside the sliding cavity, the docking rod moves through the left side surface of the T-shaped rod, and the right end of the spring is installed on the right side surface inside the sliding cavity.

[0013] As a further solution of the present invention: the positioning plate is attached to the inner surface of the support frame, the positioning block is embedded and connected to the inner part of the upper surface of the support frame, and one end of the positioning bolt is threadedly connected to the inner part of the support frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In the present invention, two adjacent support frames are connected by a T-shaped rod and a docking seat. By pulling the slide to the right, the docking rod is moved out of the docking hole, and the support frame can be pulled out upward, which is convenient for replacing the support frame to be replaced, thereby eliminating the need to replace the entire frame and reducing maintenance costs.

[0016] 2. The present invention is provided with a positioning mechanism, in which the four positioning plates are respectively fitted to the four inner side surfaces of the support frame, thereby quickly completing the alignment of the inner cavity of the support frame and the mold cavity of the plastic encapsulation mold, effectively avoiding offset between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a structural diagram of a frame for cleaning plastic molds;

[0018] Figure 2 This is a right side view of a docking seat in a frame for cleaning a plastic mold;

[0019] Figure 3 for Figure 1 A magnified view of middle A;

[0020] Figure 4 It is a cross-sectional view of a docking mechanism in a frame for cleaning a plastic mold;

[0021] Figure 5 The figure is a structural diagram of a positioning mechanism in a frame for cleaning a plastic mold.

[0022] In the figure: 1. Support frame; 2. Support rod; 3. Docking seat; 4. Docking hole; 5. T-bar; 6. Sliding hole; 7. Sliding cavity; 8. Docking mechanism; 9. Docking plate; 10. Slide plate; 11. Sliding rod; 12. Docking rod; 13. Spring; 14. Positioning mechanism; 15. Positioning plate; 16. Positioning block; 17. Countersunk hole; 18. Positioning bolt. DETAILED DESCRIPTION

[0023] See also Figures 1 to 4 The cam 7 is provided with a plurality of support frames 1 arranged from left to right, and support rods 2 are installed on the front and rear surfaces of the support frame 1, and a docking seat 3 is installed on the right surface of the support frame 1. A docking hole 4 is provided on the inner left surface of the docking seat 3, and a T-shaped rod 5 is installed on the left surface of the support frame 1. A sliding hole 6 is provided on the upper left end of the T-shaped rod 5, and a sliding cavity 7 is provided inside the left end of the T-shaped rod 5. A docking mechanism 8 is provided inside the sliding cavity 7. The docking mechanism 8 includes a docking plate 9, which is located inside the sliding cavity 7, and a slide plate 10 is installed on the upper surface of the docking plate 9. The slide plate 10 is slidably connected to the inside of the sliding hole 6. The four corners of the docking plate 9 are movably connected with slide rods 11. The ends of the slide rods 11 are installed on the left and right surfaces of the interior of the sliding cavity 7. A docking rod 12 is installed on the left surface of the docking plate 9. The docking rod 12 movably passes through the left surface of the T-shaped rod 5. A spring 13 is installed on the right surface of the docking plate 9, and the right end of the spring 13 is installed on the inner right surface of the sliding cavity 7.

[0024] The inner length and width of the support frame 1 are the same as the length and width of the mold cavity of the plastic encapsulation mold; the left and right lengths of the support rods 2 are the same as the width of the exhaust passage of the plastic encapsulation mold;

[0025] The support frame 1 is placed on the upper surface of the lower mold of the plastic encapsulation mold, and the upper mold is pressed into the support frame 1. Then, a mold-clearing resin is injected into the mold cavity. After the mold-clearing resin is formed, it adheres to the residue and the support frame 1. The mold-clearing resin can be pulled out by pulling the support frame 1, thereby cleaning the mold cavity and the exhaust channel of the plastic encapsulation mold.

[0026] The support frame 1 and the support rod 2 are integrally formed, and the upper and lower surfaces of the support frame 1, the support rod 2, the docking seat 3 and the T-shaped rod 5 are flush; the upper surface of the slide 10 is flush with the upper surface of the T-shaped rod 5;

[0027] The diameters of the docking hole 4 and the docking rod 12 are the same;

[0028] The two adjacent support frames 1, wherein the T-shaped rod 5 on the right support frame 1 is located inside the docking seat 3 on the left support frame 1, and the docking rod 12 is located in the docking hole 4, can fix the two support frames 1 together, and also facilitate the disassembly of the support frame 1.

[0029] exist Figure 1 and Figure 5 Middle: The four side surfaces of the interior of the support frame 1, namely the front, back, left and right, are provided with a positioning mechanism 14. The positioning mechanism 14 includes a positioning plate 15. The positioning plate 15 is attached to the inner surface of the support frame 1. A positioning block 16 is installed on the upper end of the surface of the positioning plate 15 close to the support frame 1. The positioning block 16 is embedded in the upper surface of the support frame 1. A countersunk hole 17 is opened on the surface of the positioning plate 15 away from the support frame 1. A positioning bolt 18 is movably passed through the interior of the countersunk hole 17. One end of the positioning bolt 18 is threadedly connected to the interior of the support frame 1.

[0030] The vertical height of the positioning plate 15 is greater than the vertical height of the support frame 1; the upper surfaces of the positioning plate 15 and the positioning block 16 are flush, and the two are integrally formed;

[0031] One side surface of the lower end of the positioning plate 15 is in contact with the mold cavity of the plastic packaging mold, so that the inner cavity of the support frame 1 is aligned with the mold cavity of the plastic packaging mold, and the two can be quickly aligned.

[0032] The working principle of the present invention is: when in use, the support frame 1 is placed on the lower mold of the plastic encapsulation mold, so that the four positioning plates 15 in the support frame 1 fit the inner surface of the mold cavity, so that the inner cavity of the support frame 1 is aligned with the mold cavity; when cleaning, the upper mold is pressed into the support frame 1, and the inner cavity of the support frame 1, the upper mold cavity, and the lower mold cavity are all aligned, and then the mold clearing resin is injected into the mold cavity. After the mold clearing resin is formed, it adheres to the residue and adheres to the support frame 1. The upper mold is opened upward, and the staff can pull the support frame 1 to directly pull out the mold clearing resin, thereby completing the cleaning of the mold cavity and the exhaust channel of the plastic encapsulation mold; when a support frame 1 is damaged, the staff can pull the slide plate 10 to the right to drive the docking rod 12 to move out of the docking hole 4, and then move the support frame 1 upward to pull it out, so as to replace it.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A frame for cleaning a plastic mold, comprising a plurality of support frames (1) arranged from left to right, wherein support rods (2) are mounted on both the front and rear surfaces of the support frames (1), characterized in that: A docking seat (3) is installed on the right side surface of the support frame (1), a docking hole (4) is provided on the inner left side surface of the docking seat (3), a T-shaped rod (5) is installed on the left side surface of the support frame (1), a sliding hole (6) is provided on the left end of the upper surface of the T-shaped rod (5), and a sliding cavity (7) is provided inside the left end of the T-shaped rod (5), and a docking mechanism (8) is provided inside the sliding cavity (7).

2. A plastic mold cleaning frame according to claim 1, characterized in that: The docking mechanism (8) includes a docking plate (9), a slide plate (10) is installed on the upper surface of the docking plate (9), and four corners of the docking plate (9) are movably connected with slide rods (11), a docking rod (12) is installed on the left surface of the docking plate (9), and a spring (13) is installed on the right surface of the docking plate (9).

3. A plastic mold cleaning frame according to claim 1, characterized in that: The four inner surfaces of the support frame (1), namely the front, back, left and right surfaces, are all provided with positioning mechanisms (14). The positioning mechanism (14) comprises a positioning plate (15). A positioning block (16) is mounted on the upper end of the surface of the positioning plate (15) close to the support frame (1). A countersunk hole (17) is provided on the surface of the positioning plate (15) away from the support frame (1). A positioning bolt (18) is movably passed through the interior of the countersunk hole (17).

4. A plastic mold cleaning frame according to claim 2, characterized in that: The docking plate (9) is located inside the sliding cavity (7), and the sliding plate (10) is slidably connected inside the sliding hole (6).

5. A plastic mold cleaning frame according to claim 2, characterized in that: The ends of the slide rod (11) are mounted on the left and right inner surfaces of the slide cavity (7), the docking rod (12) movably passes through the left side surface of the T-shaped rod (5), and the right end of the spring (13) is mounted on the right inner surface of the slide cavity (7).

6. A plastic mold cleaning frame according to claim 3, characterized in that: The positioning plate (15) is attached to the inner surface of the support frame (1), the positioning block (16) is embedded and connected to the inner surface of the upper surface of the support frame (1), and one end of the positioning bolt (18) is threadedly connected to the inner surface of the support frame (1).

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