Laser coding device for IGBT (Insulated Gate Bipolar Translator) production

Abstract

The utility model discloses a laser coding device for IGBT production, which comprises a machine table, and a rotating table, a laser coding mechanism, a carrying mechanism and a conveying belt mechanism which are arranged on the machine table, the laser coding device further comprises a dust collection mechanism, the dust collection mechanism comprises a dust collection head, a fan and a dust box, the dust collection head is communicated with an air inlet of the fan, and the dust box is communicated with the fan. The dust box is communicated with an air outlet of the fan, the conveying belt mechanism comprises a conveying belt and a shell arranged on the conveying belt, the lower end of the dust collection head penetrates through the top of the shell, and the dust collection head is vertically and downwards arranged at the top of the shell. According to the laser coding device, the dust collection head is arranged on the conveying belt mechanism for conveying the IGBTs subjected to laser coding, waste materials on the IGBTs subjected to laser coding are sucked through the dust collection head, the waste materials on the IGBTs are prevented from affecting machining of other devices on the IGBTs, the production quality of the IGBTs is effectively improved, and the waste materials can be prevented from drifting into air and polluting the production environment.

Description

Technical Field

[0001] This utility model relates to the field of electronic component processing technology, specifically to a laser marking device for IGBT production. Background Technology

[0002] IGBT (Insulated Gate Bipolar Transistor) is a composite power semiconductor device that combines the advantages of MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) and BJT (Bipolar Junction Transistor). IGBT modules require marking during production for product traceability and quality control. Laser marking machines can mark clear and permanent codes on the IGBT module casing or chip, including batch numbers, dates, model numbers, barcodes, or QR codes. However, laser marking generates a small amount of waste, including solid particles and exhaust gases. Existing equipment directly transfers laser-marked IGBT modules to the next process, severely impacting the production quality of IGBT modules. Utility Model Content

[0003] To address the problem that laser marking of IGBTs affects subsequent product processing, this invention provides a laser marking device for IGBT production. The specific technical solution of this invention is as follows:

[0004] A laser marking device for IGBT production includes: a machine base and a rotary table, a laser marking mechanism, a conveying mechanism, and a conveyor belt mechanism disposed on the machine base. The rotary table is used to place IGBTs, the laser marking mechanism is used to laser mark the IGBTs located on the rotary table, the conveying mechanism is used to transport the laser-marked IGBTs to the conveyor belt mechanism, and the conveyor belt mechanism is used to transport the IGBTs. The laser marking device also includes a dust extraction mechanism for removing waste material from the IGBTs on the conveyor belt mechanism. The dust extraction mechanism includes a dust extraction head, a fan, and a dust box. The dust extraction head is connected to the air inlet of the fan, and the dust box is connected to the air outlet of the fan. The conveyor belt mechanism includes a conveyor belt and a housing disposed on the conveyor belt. The lower end of the dust extraction head penetrates through the top of the housing and is vertically downward at the top of the housing.

[0005] Furthermore, the top of the outer casing is provided with a through hole, and the through hole is provided with a thread, and the lower end of the vacuum head is provided with a threaded part that mates with the thread.

[0006] Furthermore, a folded tube is provided below the threaded portion of the vacuum head, and the folded tube is located inside the outer casing.

[0007] Furthermore, the upper end of the suction head is in the shape of an inverted funnel, and the diameter of the largest part of the upper end of the funnel shape is greater than the diameter of the threaded part.

[0008] Furthermore, the top of the upper end of the funnel shape is a connecting part, and a limit ring is provided on the connecting part.

[0009] Furthermore, a laser detection sensor is provided at the entrance of the outer casing.

[0010] Furthermore, the laser marking device also includes a waste collection mechanism for collecting defective IGBTs, which is disposed between the conveyor belt mechanism and the rotary table.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: The laser marking device described in this application is equipped with a dust suction head on the conveyor belt mechanism for transporting IGBTs after laser marking. The dust suction head removes the waste material on the IGBTs after laser marking, preventing the waste material on the IGBTs from affecting other equipment in processing the IGBTs. This not only effectively improves the production quality of IGBTs, but also prevents the waste material from drifting into the air and polluting the production environment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the laser marking device in one embodiment of the present invention;

[0013] Figure 2 This is an exploded view of the laser marking device in one embodiment of the present invention;

[0014] Figure 3 This is a cross-sectional schematic diagram of the laser marking device in one embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram of the structure of the vacuum head in one embodiment of the present invention;

[0016] Figure 5 This is a side view of the vacuum head in one embodiment of the present invention. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0018] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They 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. They should not be construed as limiting the specific protection scope of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] like Figures 1 to 5As shown, a laser marking device for IGBT production includes: a machine base 1 and a rotary table 2, a laser marking mechanism 3, a conveying mechanism 4, and a conveyor belt mechanism 5 disposed on the machine base 1. The rotary table 2 is used to place IGBTs, the laser marking mechanism 3 is used to laser mark the IGBTs located on the rotary table 2, the conveying mechanism 4 is used to transport the laser-marked IGBTs to the conveyor belt mechanism 5, and the conveyor belt mechanism 5 is used to transport IGBTs. The laser marking device also includes a dust extraction mechanism 6 for removing waste from the IGBTs on the conveyor belt mechanism 5. The dust extraction mechanism 6 includes a dust extraction head 7, a fan 8, and a dust box 9. The dust extraction head 7 is connected to the air inlet of the fan 8, and the dust box 9 is connected to the air outlet of the fan 8. The conveyor belt mechanism 5 includes a conveyor belt 10 and a housing 11 disposed on the conveyor belt 10. The lower end of the dust extraction head 7 penetrates through the top of the housing 11 and is vertically downward at the top of the housing 11. When the laser marking device is working, the IGBT is first placed on the rotary table 2 manually or automatically. The rotary table 2 rotates, moving the IGBT below the laser marking mechanism 3. Then, the laser marking mechanism 3 marks the IGBT, and the rotary table 2 then moves the laser-marked IGBT below the conveyor mechanism 4. The conveyor mechanism 4 uses a suction or clamping method to transport the IGBT from the rotary table 2 to the conveyor belt mechanism 5, which then transports the IGBT to the next process. During the transport of the IGBT by the conveyor belt mechanism 5, the suction head 7 located above the conveyor belt mechanism 5 generates suction to suck up the waste on the IGBT and put it into the dust collection box 9, thus cleaning the IGBT and preventing the waste on the IGBT from affecting the processing of subsequent equipment, thereby improving production quality.

[0024] In one embodiment, the top of the outer casing 11 is provided with a through hole 12, and a thread is provided in the through hole 12. The lower end of the suction head 7 is provided with a threaded portion 13 that mates with the thread. IGBTs are generally transported in the middle of the conveyor belt 10. Therefore, the outer casing 11 only has one through hole 12 as the suction port, which can concentrate the suction power of the fan 8 to form a stronger negative pressure area and improve the suction efficiency. The suction head 7 is connected to the outer casing 11 by threads, which can make the suction head 7 more securely mounted on the outer casing 11.

[0025] In one embodiment, a folded tube 14 is provided below the threaded portion 13 of the suction head 7, and the folded tube 14 is located in the outer casing 11. Users can adjust the suction force on the IGBT by extending or retracting the folded tube 14 according to actual needs, which provides high flexibility.

[0026] In one embodiment, the upper end 15 of the vacuum head 7 is an inverted funnel shape, and the diameter of the largest part of the upper end 15 of the funnel shape is greater than the diameter of the threaded part 13. In this way, the upper end 15 of the funnel shape can play a limiting role.

[0027] In one embodiment, the top of the upper part 15 of the funnel shape is a connecting portion 16, and a limiting ring 17 is provided on the connecting portion 16. The fan 8 is connected to the dust box 9 and the suction head 7 respectively through the air pipe 18, and the limiting ring 16 can increase the stability of the connection between the suction head 7 and the air pipe 18.

[0028] In one embodiment, a laser detection sensor 19 is provided at the entrance of the housing 11. When the laser detection sensor 19 detects that an IGBT has entered the housing 11, it controls the fan 8 to work, thus effectively reducing the production energy consumption of the laser marking device.

[0029] In one embodiment, the laser marking device further includes a waste collection mechanism 20 for collecting defective IGBTs, which is disposed between the conveyor belt mechanism 5 and the rotary table 2. After the laser marking mechanism 3 marks the IGBTs, the laser marking device can inspect the IGBTs using a CCD camera 21. Based on the inspection results, the qualified IGBTs are transported to the conveyor belt mechanism 5 by the handling mechanism 4, while the defective IGBTs are transported to the waste collection mechanism 20.

[0030] The laser marking device described in this application is equipped with a dust suction head 7 on the conveyor belt mechanism 5 that transports the laser-marked IGBTs. The dust suction head 7 removes the waste material on the laser-marked IGBTs, preventing the waste material on the IGBTs from affecting the processing of IGBTs by other equipment. This not only effectively improves the production quality of IGBTs, but also prevents the waste material from drifting into the air and polluting the production environment.

[0031] In the description of this specification, the terms "in one embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The connection methods linked in the description of this specification have significant effects and practical utility.

[0032] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Any improvements and substitutions made using techniques known in the art based on this utility model fall within the protection scope of this utility model and should be defined by the claims. 。

Claims

1. A laser marking device for IGBT production, comprising: The machine includes a rotating table, a laser marking mechanism, a handling mechanism, and a conveyor belt mechanism mounted on the machine. The rotating table is used to place IGBTs, the laser marking mechanism is used to laser mark the IGBTs on the rotating table, the handling mechanism is used to transport the laser-marked IGBTs to the conveyor belt mechanism, and the conveyor belt mechanism is used to transport the IGBTs. The laser marking device further includes a dust extraction mechanism for removing waste material from the IGBTs on the conveyor belt mechanism. The dust extraction mechanism includes a dust extraction head, a fan, and a dust box. The dust extraction head is connected to the air inlet of the fan, and the dust box is connected to the air outlet of the fan. The conveyor belt mechanism includes a conveyor belt and a housing mounted on the conveyor belt. The lower end of the dust extraction head penetrates the top of the housing and is vertically downward at the top of the housing.

2. The laser marking device for IGBT production according to claim 1, characterized in that, The top of the outer casing is provided with a through hole, and the through hole is provided with a thread. The lower end of the vacuum head is provided with a threaded part that mates with the thread.

3. The laser marking device for IGBT production according to claim 2, characterized in that, A folded tube is provided below the threaded portion of the vacuum head, and the folded tube is located inside the outer casing.

4. The laser marking device for IGBT production according to claim 2, characterized in that, The upper end of the vacuum head is in the shape of an inverted funnel, and the diameter of the largest part of the upper end of the funnel shape is greater than the diameter of the threaded part.

5. The laser marking device for IGBT production according to claim 4, characterized in that, The top of the upper part of the funnel shape is a connecting part, and a limit ring is provided on the connecting part.

6. The laser marking device for IGBT production according to claim 1, characterized in that, A laser detection sensor is installed at the entrance of the outer casing.

7. The laser marking device for IGBT production according to claim 1, characterized in that, The laser marking device also includes a waste collection mechanism for collecting defective IGBTs, which is located between the conveyor belt mechanism and the rotary table.

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