Light reflecting device

Abstract

The light reflecting device comprises a support, a plane mirror set is arranged on the support, the plane mirror set is rotatably connected to the support, and the plane mirror set comprises a middle plane mirror, a left plane mirror and a right plane mirror; the middle plane mirror is rotationally connected to the support, the left plane mirror and the right plane mirror are arranged on the two sides of the middle plane mirror and are parallel to each other, a consumable projection area is arranged on the support, and an optical signal receiver is arranged on the side, away from the consumable projection area, of the support. The device has the advantages that the levelness and positioning accuracy of the light reflecting device are guaranteed, a light source penetrates through the PS diffusion plate, a light spot or a line light source is diffused into a soft and uniform area light source, the area light source projects the side faces and the bottoms of the cutter, the wire guide nozzle and the chopper, and the reflector reflects the projection to the light signal receiver through multiple reflections. The relative gap and height of the cutter, the wire mouth and the chopper can be clearly quantified by combining the images of the cutter, the wire mouth and the chopper with the scale on the screen, so that the installation positions of the cutter, the wire mouth and the chopper are uniform, accurate and visual.

Description

Technical Field

[0001] The utility model relates to the technical field of wedge bonding in the semiconductor packaging industry, and in particular to a light reflecting device. Background Art

[0002] With the rapid development of the new energy industry, the market for automotive-grade IGBT modules and other application modules has seen explosive growth, which has also promoted the development of IGBT module manufacturing technology. Wedge bonding is a new bonding process technology derived from ball bonding technology in the semiconductor packaging industry. It is also used to achieve electrical connections between electronic chips and wires or chips. Wedge bonding uses a wider variety and quantity of consumables than ball bonding. These multiple consumables work together to guide and transport the bond wire, bond the solder joints, and disconnect the bond wires.

[0003] Currently, the wedge bonding process uses a large number of thick wire bonding consumables, including splitters, cutters, and wire nozzles. If the installation heights of the splitters, cutters, and wire nozzles, as well as the gaps between them, cannot be intuitively and quantified, the installation results will inevitably be affected. This will cause a series of quality risks, such as bruising of the solder joints, unclean solder joint cutting, increased wire payout resistance, etc., ultimately resulting in low product yield and unreliable product quality. It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this disclosure and may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model discloses a light reflecting device.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A light reflecting device comprises a bracket, wherein a plane mirror group is provided on the bracket, and the plane mirror group is rotatably connected to the bracket, and the plane mirror group comprises a middle plane mirror, a left plane mirror and a right plane mirror; the middle plane mirror is rotatably connected to the bracket, and the left plane mirror and the right plane mirror are arranged on both sides of the middle plane mirror, and the left plane mirror and the right plane mirror are parallel to each other; a consumables projection area is provided on the bracket, and an optical signal receiver is provided on the side of the bracket away from the consumables projection area.

[0007] Furthermore, the middle plane mirror is rotated to the working position, and the middle plane mirror forms an angle of 45° with the horizontal plane. At this time, the left plane mirror, the middle plane mirror and the right plane mirror are at different heights, and the left plane mirror and the right plane mirror are opposite to each other.

[0008] Furthermore, a convex lens is installed on the bracket, and the convex lens is installed at the optical signal receiver.

[0009] Furthermore, in the working state, the intermediate plane mirror forms an angle of 45° with the horizontal plane. At this time, the center point of the intermediate plane mirror and the center point of the convex lens 8 are on the same horizontal line.

[0010] Furthermore, a PS diffusion plate is installed on the bracket, and the PS diffusion plate is located outside the consumables projection area.

[0011] Furthermore, a positioning pin group is installed on one side of the bracket.

[0012] Furthermore, the positioning pin needle group includes two thick and short needles and one thin and long needle, and the two thick and short needles and the thin and long needle are fixed on one side of the bracket in the horizontal direction, wherein the thin and long needle is arranged between the two thick and short needles.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. A plane mirror assembly diffuses a point or line light source into a soft, uniform surface light source. This surface light source projects the sides and bottom of the cutter, conductor nozzle, and riving knife. After multiple reflections, the reflector reflects the projection back to the optical signal receiver, ensuring the levelness and precise positioning of the light reflector, and ensuring the accurate installation of the cutter, conductor nozzle, and riving knife. 2. A convex lens initially amplifies the projection. Ultimately, the computer presents the optical signal to the operator as an image. The images of the cutter, conductor nozzle, and riving knife, combined with the on-screen scale, clearly quantify the relative clearance and height between them, ensuring uniform, accurate, and intuitive installation of the cutter, conductor nozzle, and riving knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the top view of a light reflecting device.

[0016] Figure 2 2 is a front view structural schematic diagram of a light reflecting device.

[0017] Figure 3 This is a front view schematic diagram of the structure of a light reflection device in another working state. The figure shows: 1. Positioning pin assembly; 2. Bracket; 3. Plane mirror assembly; 4. PS diffuser; 5. Left plane mirror; 6. Middle plane mirror; 7. Right plane mirror; 8. Convex lens; 9. Consumables projection area. DETAILED DESCRIPTION

[0018] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the device proposed in the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0020] Example:

[0021] A light reflecting device, such as Figure 1 As shown, it includes a bracket 2, which supports and ensures the horizontality of the light reflecting device.

[0022] like Figure 1 and Figure 2 As shown, a positioning pin needle group 1 is installed on one side of the bracket 2. The positioning pin needle group 1 includes two thick and short needles and one thin and long needle. The two thick and short needles and one thin and long needle are fixed on one side of the bracket 2 in the horizontal direction, and the thin and long needle is arranged between the two thick and short needles. It mainly plays the role of positioning the installation position of the light reflecting device to ensure that the position can be accurate and precise each time it is installed.

[0023] like Figure 1 and Figure 2 As shown, the bracket 2 is provided with a consumables projection area 9 and an optical signal receiver 10. The consumables projection area 9 is arranged on the side away from the positioning pin needle group 1, and the optical signal receiver 10 is arranged on the side close to the positioning pin needle group 1. The consumables projection area 9 is used to place the cutter, wire nozzle, and splitter to be projected, and the optical signal receiver 10 is used to receive optical signals.

[0024] like Figure 1 and Figure 2 As shown, a convex lens 8 is mounted on the bracket 2, and the convex lens 8 is mounted on the optical signal receiver 10. The convex lens 8 realizes the initial magnification of the object projection.

[0025] like Figure 1 and Figure 2As shown, a PS diffuser plate 4 is installed on the bracket 2. The PS diffuser plate 4 is located outside the consumable projection area 9 and diffuses the point or line light source into a soft and uniform surface light source, which is more conducive to object projection.

[0026] like Figure 1 and Figure 3 As shown, a plane mirror group 3 is provided on the bracket 2, and the plane mirror group 3 is rotatably connected to the bracket 2. The plane mirror group 3 includes a middle plane mirror 6, a left plane mirror 5, and a right plane mirror 7. The middle plane mirror 6 is rotatably connected to the bracket 2, and the left plane mirror 5 and the right plane mirror 7 are arranged on both sides of the middle plane mirror 6, and the left plane mirror 5 and the right plane mirror 7 are parallel to each other. Figure 3 As shown, the intermediate mirror 6 rotates to its operating position, forming a 45° angle with the horizontal plane. The left mirror 5, the intermediate mirror 6, and the right mirror 7 are now at different heights, with the left mirror 5 and the right mirror 7 facing each other. The center point of the intermediate mirror 6 and the center point of the convex lens are now on the same horizontal line. Furthermore, the left mirror 5 and the intermediate mirror 6 form a 90° angle when in operation. This interaction allows horizontally incident light to be reflected horizontally to the optical signal receiver 10.

[0027] In the process of work,

[0028] (1) Side projection:

[0029] like Figure 2 As shown, the splitting knife, cutter, and wire nozzle are transferred to the consumables projection area 9, and the surface light source is irradiated to the side of the splitting knife, cutter, and wire nozzle facing the light source, and the other side forms a projection. The projection is combined by the left plane mirror 5 and the middle plane mirror 6 to transmit the projection to the optical signal receiver 10. Before the projection is reflected to the optical signal receiver 10, it will pass through the convex lens 8, completing the first magnification of the projection of the splitting knife, cutter, and wire nozzle.

[0030] (2) Bottom projection:

[0031] like Figure 3 As shown, the middle plane mirror 6 is rotated to the working state, forming an angle of 90° with the horizontal plane. The line light source on the equipment is converted into a soft and uniform surface light source through the PS diffuser 4. Under the illumination of the surface light source, the projection of the splitting knife, wire nozzle and cutter first passes through the right plane mirror 7. The light is then reflected by the right plane mirror 7 and passes through the convex lens. The light is initially magnified by the convex lens and then transmitted to the optical signal receiver 10.

[0032] The technical features of the above-mentioned embodiments can be arbitrarily grouped. In order to make the description concise, not all possible groups of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the groups of these technical features, they should be considered to be within the scope of this specification. The above-mentioned embodiments only express several implementation methods of the utility model. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several variations and improvements can be made, which all fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A light reflecting device, characterized in that: It includes a bracket, on which a plane mirror group is provided, and the plane mirror group is rotatably connected to the bracket, and the plane mirror group includes a middle plane mirror, a left plane mirror and a right plane mirror; the middle plane mirror is rotatably connected to the bracket, and the left plane mirror and the right plane mirror are arranged on both sides of the middle plane mirror, and the left plane mirror and the right plane mirror are parallel to each other, a consumables projection area is provided on the bracket, and an optical signal receiver is provided on the side of the bracket away from the consumables projection area.

2. A light reflecting device according to claim 1, characterized in that: The middle plane mirror rotates to the working position, the middle plane mirror forms an angle of 45° with the horizontal plane, at which time the left plane mirror, the middle plane mirror and the right plane mirror are at different heights, and the left plane mirror and the right plane mirror face each other.

3. A light reflecting device according to claim 2, characterized in that: A convex lens is installed on the bracket, and the convex lens is installed at the optical signal receiver.

4. A light reflecting device according to claim 3, characterized in that: In the working state, the intermediate plane mirror forms an angle of 45° with the horizontal plane, and the center point of the intermediate plane mirror and the center point of the convex lens (8) are on the same horizontal line.

5. The light reflecting device according to claim 1, wherein: A PS diffusion plate is installed on the bracket, and the PS diffusion plate is located outside the consumables projection area.

6. The light reflecting device according to claim 1, characterized in that: A positioning pin group is installed on one side of the bracket.

7. The light reflecting device according to claim 6, characterized in that: The positioning pin needle group includes two thick and short needles and one thin and long needle, and the two thick and short needles and the thin and long needle are fixed on one side of the bracket in the horizontal direction, wherein the thin and long needle is arranged between the two thick and short needles.

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