Visual lamplight structure of wire welding machine

Abstract

The utility model discloses a visual lamplight structure of a wire bonder, which comprises a main mounting assembly, a main supporting assembly arranged on the main mounting assembly, an auxiliary fixing assembly arranged on the main supporting assembly, a lens barrel arranged on the auxiliary fixing assembly, a photographing assembly arranged at one end of the lens barrel, and a lens assembly arranged at one end of the lens barrel far away from the photographing assembly. A frosted lens is arranged in the lens assembly, a multi-bead light source is arranged on the lens assembly and located above the frosted lens, and a side light source is arranged below the lens assembly. By applying the visual lamplight structure, the hard light can be scattered through the frosted lens to form light rays with different angles, and the side light source can generate refraction and reflection phenomena at the edge of the chip to form a bright contour line, so that a visual system can better determine the boundary of an object, the contour definition of the chip is enhanced, and the visual effect is improved. The outline and the posture of the chip can be clearly observed, so that the inclination of the inclined chip is recognized, and the problem that the inclined chip cannot be recognized successfully is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wire bonding machines, in particular to a visual lighting structure of a wire bonding machine. Background Art

[0002] Wire bonding machines are mainly used for welding the inner leads of semiconductor components. Since the weldments to which the metal leads need to be welded are very small, it is difficult to weld them with the naked eye. A special visual system is required to capture the image of the weldment, amplify the image of the weldment, and align the position before welding. The weldments placed on the stage of the fixture are at different heights. If the focal length remains unchanged, the image will sometimes be clear and sometimes not. Therefore, focusing is necessary.

[0003] Visual imaging requires the chip to be level and the chip tilt angle to be small; it places high demands on the pre-die bonding process. In the visual recognition of the wire bonder, due to the existing visual structure of the wire bonder, the outline and posture of the chip cannot be clearly observed, and the tilt of the tilted chip cannot be recognized, resulting in the tilted chip being rejected. For this reason, a visual lighting structure for the wire bonder is designed. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and to design a visual lighting structure for a wire bonding machine.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is a visual lighting structure for a wire bonding machine, comprising a main mounting assembly, a main supporting assembly being provided on the main mounting assembly, an auxiliary fixing assembly being provided on the auxiliary fixing assembly, a lens barrel being provided on one end of the lens barrel, a photographing assembly being provided on the end of the lens barrel away from the photographing assembly, a frosted lens being provided in the lens assembly, a multi-lamp light source being provided on the lens assembly above the frosted lens, and a side light source being provided below the lens assembly.

[0006] As a further description of the present technical solution, the main mounting assembly includes a main mounting base, and a main support assembly is provided on the main mounting base.

[0007] As a further description of the present technical solution, the main support assembly includes a main support plate frame arranged on the main mounting assembly, and an auxiliary fixing assembly is arranged on the main support plate frame.

[0008] As a further description of the present technical solution, the auxiliary fixing assembly includes an auxiliary fixing seat arranged on the main support plate frame.

[0009] As a further description of the present technical solution, the auxiliary fixing seat is connected to the main support assembly via a fixing member.

[0010] The photographing assembly comprises a photographing camera arranged at one end of the lens barrel.

[0011] The beneficial effect is that the visual lighting structure of the technical solution has an ingenious structural design and strong practicality. By using this visual lighting structure, the strong light can be scattered through the frosted lens to form light at different angles. By adjusting the angle of the multi-lamp light source, the chip can be better imaged. The side light source will produce refraction and reflection at the edge of the chip, forming a bright contour line, so that the visual system can better determine the boundary of the object, enhance the clarity of the chip contour, and make the contour and posture of the chip clearly observed, thereby identifying the tilt of the tilted chip and effectively avoiding the problem of tilted chip recognition failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the installation structure of the frosted lens of the utility model;

[0014] Figure 3 It is a schematic diagram of the optical path structure of the utility model.

[0015] In the figure, 1. Main mounting assembly; 2. Main support assembly; 3. Auxiliary fixing assembly; 4. Lens barrel; 5. Photographing assembly; 6. Lens assembly; 7. Frosted lens; 8. Multi-lamp light source; 9. Side light source; 10. Main mounting base; 11. Main support plate frame; 12. Auxiliary fixing seat; 13. Fixing part; 14. Photographing camera; 15. Positive chip; 16. Tilt chip. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings. Figure 1-Figure 3 As shown, a visual lighting structure of a wire bonding machine includes a main mounting assembly 1. The main mounting assembly 1 will be described in detail below. The main mounting assembly 1 includes a main mounting base 10, and a main support assembly 2 is provided on the main mounting base 10.

[0017] A main support assembly 2 is provided on the main mounting assembly 1. The main support assembly 2 will be described in detail below. The main support assembly 2 includes a main support plate frame 11 provided on the main mounting assembly 1, and an auxiliary fixing assembly 3 is provided on the main support plate frame 11.

[0018] In order to facilitate the fixation of the lens barrel 4, an auxiliary fixing assembly 3 is provided on the main support assembly 2. The auxiliary fixing assembly 3 will be described in detail below. The auxiliary fixing assembly 3 includes an auxiliary fixing seat 12 provided on the main support plate frame 11, and the auxiliary fixing seat 12 is connected to the main support assembly 2 through a fixing member 13.

[0019] A lens barrel 4 is provided on the auxiliary fixing component 3 , and a photographing component 5 is provided at one end of the lens barrel 4 . The lens component 6 will be described in detail below. The photographing component 5 includes a camera 14 provided at one end of the lens barrel 4 .

[0020] A lens assembly 6 is located at the end of the lens barrel 4, away from the camera assembly 5. Within this lens assembly 6 is a frosted lens 7. The fine particles on the surface of the frosted lens 7 diffusely reflect light. When light strikes the frosted lens 7, it doesn't produce the concentrated reflected light (i.e., glare) that occurs on a smooth lens. Instead, the frosted lens 7 disperses the intense light, creating rays of light at different angles.

[0021] A multi-lamp light source 8 is provided on the lens assembly 6 above the frosted lens 7. The multi-lamp light source 8 has multiple adjustable axes and can achieve lighting at different angles. By adjusting the angle of the multi-lamp light source 8, the chip can form a better image. The multi-lamp light source 8 usually allows the user to independently adjust the brightness of the light on each axis.

[0022] A side light source 9 is positioned below the lens assembly 6. This provides light from a wider range of angles, striking the chip and reflecting it back into the lens barrel 4. This light source 9 illuminates the chip from the side, highlighting the chip's edges. When illuminated from the side, this light source 9 produces refraction and reflection at the chip's edges, creating a bright outline. This allows the visual system to better determine the object's boundaries and enhance the clarity of the chip's outline.

[0023] When the side light source 9 illuminates from the side, the reflection angle of the light can be changed so that the direction of the reflection and glare avoids the lens of the visual system, thereby reducing the interference of reflection and glare.

[0024] The side light sources 9 utilize multi-angle illumination, and avoiding shadows is crucial. Shadows can obscure details on the bottom or sides of the chip, affecting the ability to determine chip tilt. Multiple ring-shaped side light sources 9 are arranged around the chip to illuminate it from different angles. These ring-shaped side light sources 9 can be independently controlled for brightness and angle. Proper adjustment eliminates shadows from the bottom and edges of the chip, allowing the chip's outline and posture to be clearly observed, enabling identification of tilted chips.

[0025] The above describes in detail the specific structure of the present invention. The following describes the working principle of the present invention: the chip is placed under the lens assembly 6, and the light from the multi-lamp light source 8 passes through the frosted lens 7. The light is diffusely reflected by the frosted lens 7 to achieve uniform illumination. Light at different angles hits the chip and can be reflected back to the lens barrel 4. The side light source 9 provides light at more angles to hit the chip and can be reflected back to the lens barrel 4. In some occasions requiring high-precision imaging, the chip itself has a certain gloss and the front light may produce glare, affecting the observation of the sample structure. The side light can reduce glare by adjusting the angle, so that the visual system can focus on the real details of the sample, improve the accuracy of observation, and make the outline and posture of the chip clearly observed, thereby identifying the tilt of the tilted chip.

[0026] The above technical solutions only reflect the preferred technical solutions of the present utility model. Any changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present utility model and fall within the scope of protection of the present utility model.

Claims

1. A visual lighting structure for a wire bonding machine, characterized in that: The invention comprises a main mounting assembly (1), wherein a main supporting assembly (2) is provided on the main mounting assembly (1), an auxiliary fixing assembly (3) is provided on the main supporting assembly (2), a lens barrel (4) is provided on the auxiliary fixing assembly (3), a photographing assembly (5) is provided at one end of the lens barrel (4), a lens assembly (6) is provided at one end of the lens barrel (4) away from the photographing assembly (5), a frosted lens (7) is provided in the lens assembly (6), a multi-lamp bead light source (8) is provided on the lens assembly (6) above the frosted lens (7), and a side light source (9) is provided below the lens assembly (6).

2. A wire bonding machine visual lighting structure according to claim 1, characterized in that: The main installation assembly (1) comprises a main installation base frame (10), and a main support assembly (2) is provided on the main installation base frame (10).

3. The visual lighting structure of a wire bonding machine according to claim 1, characterized in that: The main support assembly (2) comprises a main support plate frame (11) arranged on the main installation assembly (1), and an auxiliary fixing assembly (3) is arranged on the main support plate frame (11).

4. The visual lighting structure of a wire bonding machine according to claim 1, characterized in that: The auxiliary fixing assembly (3) comprises an auxiliary fixing seat (12) arranged on the main support plate frame (11).

5. The visual lighting structure of a wire bonding machine according to claim 4, characterized in that: The auxiliary fixing seat (12) is connected to the main support assembly (2) via a fixing member (13).

6. The visual lighting structure of a wire bonding machine according to claim 1, characterized in that: The photographing assembly (5) comprises a photographing camera (14) arranged at one end of the lens barrel (4).

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