Tackifier spraying device

Abstract

Provided is a tackifier injection apparatus. Relates to semiconductor device processing equipment. Comprising a box body, a spraying groove is formed in the top face of the box body, and a plurality of horizontally-arranged supporting plates are arranged in the spraying groove and used for supporting a plastic package feeding frame; a collecting hole is formed in the spraying groove, and redundant tackifier is collected into the waste glue collecting barrel through the collecting hole. The spraying bracket is detachably and fixedly arranged at the top of the box body; the multiple spiral atomizing nozzles are fixedly arranged at the top of the spraying support, and the nozzles face the spraying groove; and the spiral atomizing nozzle is connected with the glue pump through a glue inlet pipe and is connected with the air compression pump through an air inlet pipe. The spraying device is used for spraying the upper frame of the plastic package feeding frame, so that the spraying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to semiconductor device processing equipment, in particular to an adhesive spraying device. Background Art

[0002] Under the background of environmental protection and energy sustainable development, new energy vehicles are gradually replacing traditional vehicles with their obvious advantages of environmental protection and sustainability. The development of semiconductor technology has promoted the development and progress of automotive-grade power device packaging technology, and a variety of packaging forms have emerged one after another. However, compared with industrial applications, the application conditions of automotive-grade power devices are more complex, which puts forward more stringent high-functional safety standards for their design, manufacturing and verification, bringing huge challenges to the packaging of automotive-grade power devices, especially plastic packaging. Improving the interfacial adhesion strength between the plastic packaging material and the lead frame is an issue that the industry pays more attention to.

[0003] The adhesive can effectively improve the bonding strength between the frame and the plastic package, and improve the reliability of the power device; in the packaging process, the current method of manual glue spraying is used for coating, which is not only slow in efficiency, but also cannot ensure uniformity. Therefore, developing an adhesive spraying device that improves the spraying efficiency is a technical problem that needs to be solved urgently at present. Summary of the Utility Model

[0004] The utility model aims at the above problems and provides an adhesive spraying device with a delicate structure and improved adhesive spraying efficiency.

[0005] The technical solution of the utility model is as follows:

[0006] An adhesive spraying device, comprising:

[0007] A box body, the top surface of which is provided with a spraying tank, and a plurality of horizontally arranged support plates are arranged in the spraying tank for supporting a plastic packaging feeding rack; a collecting hole is arranged in the spraying tank, and the excess adhesive is collected into a waste glue collecting bucket through the collecting hole;

[0008] A spraying bracket, which is detachably and fixedly arranged on the top of the box body;

[0009] A plurality of spiral atomizing nozzles are respectively fixedly arranged on the top of the spraying bracket, and the nozzles thereof face the spraying tank; the spiral atomizing nozzles are connected to a glue pumping pump through a glue inlet pipe and to an air compression pump through an air inlet pipe.

[0010] Specifically, there is a distance between the bottom surface of the support plate and the bottom of the spraying tank.

[0011] Specifically, a storage cavity is arranged below the box body for placing the waste glue collecting bucket.

[0012] Specifically, the height of the spraying bracket is adjustable and fixedly arranged on the top of the body.

[0013] Specifically, the spraying support includes:

[0014] A support body A, with several spiral atomizing nozzles provided in the middle and foundation legs A extending downward at the four corners respectively;

[0015] A number of lifting screws, which are adjustably and fixedly connected to the foundation legs A through threads;

[0016] A gland, which is movably sleeved on the lifting screw and is detachably and fixedly connected to the box body through a connecting member.

[0017] Specifically, the spraying support includes:

[0018] A support body B, with several spiral atomizing nozzles provided in the middle and foundation legs B extending downward at the four corners respectively;

[0019] A linear driving mechanism, the cylinder body of which is fixedly connected to the box body, and the piston rod end is detachably and fixedly connected to the foundation leg B.

[0020] Specifically, at least one pair of the linear driving mechanisms is provided and is arranged diagonally.

[0021] Specifically, the linear driving mechanism includes an electric push rod, a cylinder or an oil cylinder.

[0022] The utility model includes a box body, a spraying support and several spiral atomizing nozzles; a spraying groove is provided on the top surface of the box body, several horizontally arranged support plates are provided in the spraying groove for supporting a plastic encapsulation feeding rack; a collection hole is provided in the spraying groove, and redundant tackifier is collected into a waste glue collection barrel through the collection hole; several spiral atomizing nozzles are provided and are respectively fixedly arranged on the top of the spraying support, and their nozzles face the spraying groove; after starting, the upper frame of the plastic encapsulation feeding rack is sprayed, improving the spraying efficiency. Description of the Drawings

[0023] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 is a three-dimensional structural schematic diagram inside the box body;

[0025] Figure 3 is a structural schematic diagram of the spraying support Figure 1 ;

[0026] Figure 4 is Figure 3 the enlarged structural schematic diagram of area A in

[0027] Figure 5 is a structural schematic diagram of the spraying support Figure 2 ;

[0028] In the figure, 100 is the box body, 110 is the support plate, and 120 is the waste glue collection bucket.

[0029] 200 is the spraying bracket, 210 is the bracket body A, 220 is the lifting screw rod, 230 is the gland, 240 is the bracket body B, and 250 is the linear driving mechanism.

[0030] 300 is the spiral atomizing nozzle, 310 is the glue inlet pipe, 311 is the glue pumping pump, 320 is the air inlet pipe, and 321 is the air compressor pump.

[0031] 400 is the support plastic encapsulation feeding rack. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In this case, the step of spraying the tackifier is placed after the wire bonding process. If it is integrated into the wire bonding machine, it will be more complicated, there is no room for modification, and it is easy to cause too long residence time. In order to improve work efficiency and reduce process steps, it is most cost-effective to integrate the tackifier spraying link into the plastic encapsulation process, that is, place it beside the plastic encapsulation machine, thereby improving work efficiency. The following refers to Figures 1-5 Describe according to the present invention;

[0036] The tackifier spraying device includes:

[0037] The box body 100 is provided with a spraying tank on its top surface. A number of horizontally arranged support plates 110 are provided in the spraying tank for supporting the plastic encapsulation feeding rack 400. A collection hole is provided in the spraying tank, and the excess tackifier is collected into the waste glue collection bucket 120 through the collection hole.

[0038] The spraying bracket 200 is detachably and fixedly arranged on the top of the box body 100.

[0039] A number of spiral atomizing nozzles 300 are provided, which are respectively fixedly arranged on the top of the spraying bracket 200, and their nozzles face the spraying tank. The spiral atomizing nozzle 300 is connected to the glue pumping pump 311 through a glue inlet pipe 310 and is connected to the air compression pump 321 through an air inlet pipe 320. The glue pumping pump 311 and the air compression pump 321 are respectively arranged in the box body 100.

[0040] The spiral atomizing nozzle 300 is connected to the air compression pump 321 and the glue pumping pump 311. The tackifier and compressed air are mixed and effectively sprayed out evenly through the spiral-shaped channel inside the spiral atomizing nozzle 300. The spiral atomizing nozzle 300 is selected with three nozzles, which respectively face three angles of left, right and middle, and can completely cover the entire frame with a size of 250mm * 8mm.

[0041] There is a gap between the bottom surface of the support plate 110 and the bottom of the spraying tank.

[0042] A storage cavity is provided below the box body 100 for placing the waste glue collection bucket 120. The tackifier dripping into the waste liquid collection tank flows into the waste glue collection bucket 120 for collection.

[0043] The height of the spraying bracket 200 is adjustable and fixedly arranged on the top of the body 100, so as to adjust the area of the sprayed tackifier.

[0044] Adjustment scheme one:

[0045] The spraying bracket 200 includes:

[0046] The bracket body A210 is provided with a number of spiral atomizing nozzles 300 in the middle, and the four corners are respectively provided with foundation legs A extending downward.

[0047] A number of lifting screws 220 are provided, which are adjustably and fixedly connected to the foundation legs A through threads, and nuts can be added to improve the connection reliability.

[0048] The gland 230 is movably sleeved on the lifting screw 220 and is detachably and fixedly connected to the box body 100 through a connecting piece.

[0049] When the gland 230 is fixedly connected to the box body 100, there is a gap between its bottom surface and the box body 100. The bottom surface of the lifting screw rod 220 is fixedly attached to the box body 100. When it is necessary to rotate and adjust the lifting screw rod 220, loosen the gland 230 and then rotate and adjust the lifting screw rod 220.

[0050] Adjustment solution two:

[0051] The spraying bracket 200 includes:

[0052] A bracket body B240, with a number of spiral atomizing nozzles 300 provided in the middle, and foundation legs B extending downward at the four corners respectively;

[0053] A linear driving mechanism 250, the cylinder body of which is fixedly connected to the box body 100, and the piston rod end is detachably and fixedly connected to the foundation leg B.

[0054] At least one pair of linear driving mechanisms 250 are provided and are arranged diagonally.

[0055] The linear driving mechanism 250 includes an electric push rod, a cylinder or an oil cylinder.

[0056] After the machine places the frame on the plastic sealing feeding rack 400, before preheating, transfer the plastic sealing feeding rack 400 to the equipment for spraying tackifier. After pressing the switch, automatically spray glue, spray a fixed amount of glue, and then manually transfer the plastic sealing feeding rack 400 to the preheating table for preheating, and then directly perform plastic sealing. The frame glue spraying equipment rack is placed beside the preheating table, meeting the requirement of the plastic sealing process that requires glue spraying, and can greatly improve the plastic sealing bonding force without affecting the work efficiency.

[0057] Regarding the content disclosed in this case, the following points also need to be explained:

[0058] (1), The attached drawings of the embodiments disclosed in this case only involve the structures related to the embodiments disclosed in this case, and other structures can refer to the general design;

[0059] (2), Without conflict, the embodiments disclosed in this case and the features in the embodiments can be combined with each other to obtain new embodiments;

[0060] The above is only the specific implementation manners disclosed in this case, but the protection scope of this disclosure is not limited thereto. The protection scope disclosed in this case shall be subject to the protection scope of the claims.

Claims

1. A tackifier spraying device, characterized in that, Comprising: A box body (100) with a spraying groove on its top surface. A plurality of horizontally arranged support plates (110) are provided in the spraying groove for supporting the plastic encapsulation feeding rack (400); a collection hole is provided in the spraying groove, and the excess tackifier is collected into the waste glue collection bucket (120) through the collection hole; A spraying bracket (200) detachably and fixedly arranged on the top of the box body (100); A plurality of spiral atomizing nozzles (300) are respectively fixedly arranged on the top of the spraying bracket (200), and their nozzles face the spraying groove; the spiral atomizing nozzles (300) are connected to a glue pumping pump (311) through a glue inlet pipe (310) and are connected to an air compression pump (321) through an air inlet pipe (320).

2. The tackifier spraying device according to claim 1, wherein A spacing is provided between the bottom surface of the support plate (110) and the bottom of the spraying groove.

3. The tackifier spraying device according to claim 1, characterized in that, A storage cavity is provided below the box body (100) for placing the waste glue collection bucket (120).

4. The tackifier spraying device according to claim 1, characterized in that, The spraying bracket (200) is height-adjustably and fixedly arranged on the top of the body (100).

5. The tackifier spraying device according to claim 4, characterized in that, The spraying bracket (200) includes: A bracket body A (210) with a plurality of spiral atomizing nozzles (300) in the middle and foundation legs A extending downward at the four corners respectively; A plurality of lifting screw rods (220) are adjustably and fixedly connected to the foundation legs A through threads; A gland (230) is movably sleeved on the lifting screw rod (220) and is detachably and fixedly connected to the box body (100) through a connecting member.

6. The tackifier spraying device according to claim 4, characterized in that, The spraying bracket (200) includes: A bracket body B (240) with a plurality of spiral atomizing nozzles (300) in the middle and foundation legs B extending downward at the four corners respectively; A linear driving mechanism (250) with its cylinder fixedly connected to the box body (100) and its piston rod end detachably and fixedly connected to the foundation leg B.

7. The tackifier spraying device according to claim 6, wherein, At least a pair of the linear driving mechanisms (250) are provided and arranged diagonally.

8. The tackifier spraying device according to claim 6 or 7, characterized in that, The linear driving mechanism (250) includes an electric push rod, a cylinder or an oil cylinder.

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