Image acquisition optical adjustment assembly and bonding machine

Abstract

The utility model belongs to the technical field of bonding machines, and particularly relates to an image acquisition optical adjustment assembly and a bonding machine, the image acquisition optical adjustment assembly is used for image acquisition of a chopper, a cutter and a wire nozzle, the optical adjustment assembly comprises a bottom plate, and a camera, a lens, a light source and a reflection unit which are arranged on the bottom plate, the camera is connected with the lens, the lens is connected with the light source, and the reflection unit is connected with the light source. The camera, the lens and the light source are coaxially arranged; the reflection unit is in sliding fit with the bottom plate, so that the light source and the reflection unit are arranged in a staggered or opposite manner; when the light source and the reflection unit are arranged in a staggered mode, the light source directly irradiates the side face of the chopper, the side face of the cutter and the side face of the wire mouth, and image collection is conducted on gaps among the chopper, the cutter and the wire mouth through the camera. When the light source and the reflection unit are arranged oppositely, the light source irradiates the bottom surfaces of the chopper, the cutter and the wire nozzle after being reflected by the reflection unit, and image acquisition is carried out on the coaxiality of the chopper, the cutter and the wire nozzle through the camera; the device is simple and practical in structure, can avoid ghost shadows of different views, and improves the use reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of bonding machines, and in particular relates to an image acquisition optical adjustment component and a bonding machine. Background Art

[0002] The bonding machine uses thin metal wires and utilizes heat, pressure, and ultrasound to weld the metal leads to the substrate to achieve electrical connection between the chip and the substrate. Before the bonding machine officially starts working, the position of the splitter, cutter, and wire nozzle needs to be adjusted to ensure that the relative position relationship of the three meets the requirements of welding leads. Since the three are relatively small in size and inconvenient for human eyes to observe, the bonding machine needs to be equipped with a visual vision system to observe and compare the three, mainly through side views and bottom views. The side view is used to adjust the gap between the three, and the bottom view is used to adjust the coaxial relationship of the three.

[0003] The mainstream visual adjustment system currently used in bonding machines uses a light source to emit light of different wavelengths (generally red, green, and blue) to the surfaces of the splitter, cutter, and wire nozzle for reflection. Different light paths can only be imaged through light of corresponding colors. In this way, the bonding head does not need to be moved. It only needs to switch the color of the light source at the same position to achieve the view switching.

[0004] Since the optical path of the bottom view can only pass green light, and the optical path of the side view can only pass red light, the light source switches to red light, and green light cannot pass through the optical path of the side view, so the camera can only recognize the side view; similarly, switching green light corresponds to the bottom view, but there are technical defects in this method. Since ambient light is natural light, natural light is white light, which contains multiple wavelengths (multiple colors) of light, if the ambient light is relatively strong, the color light of the ambient light can also pass through the corresponding optical path. At this time, two views will appear in the image, namely a main view and a virtual image, affecting the observation effect. For example, when looking at the side view, the light source is red light, and the optical path can only pass red light, but the optical path of the bottom view can also synchronously receive the weak green light in the ambient light. At this time, the camera can also receive the relatively weak bottom view, and the virtual image of the bottom view will appear in the side view in the system.

[0005] Therefore, it is necessary to improve the defects in the prior art to overcome the shortcomings in practical applications. Utility Model Content

[0006] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the purposes of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the purposes of the present invention is to provide an image acquisition optical adjustment component and bonding machine that meet one or more of the above-mentioned needs.

[0007] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides an image acquisition optical adjustment component, which is used for acquiring images of a splitting knife, a cutting knife and a wire nozzle, and comprises a bottom plate and a camera, a lens, a light source and a reflection unit installed on the bottom plate, wherein the camera is connected to the lens, the lens is connected to the light source, and the camera, the lens and the light source are coaxially arranged; the reflection unit is slidably matched with the bottom plate, so that the light source and the reflection unit are staggered or arranged oppositely;

[0009] Among them, when the light source and the reflecting unit are arranged in a staggered manner, the light source directly shines on the sides of the splitting knife, the cutting knife and the wire nozzle, and the camera is used to collect images of the gaps between the three; when the light source and the reflecting unit are arranged directly opposite to each other, the light source is reflected by the reflecting unit and then shines on the bottom surfaces of the splitting knife, the cutting knife and the wire nozzle, and the camera is used to collect images of the coaxiality of the three.

[0010] As a preferred solution, the reflection unit includes a mounting seat and a prism, and the prism is fixed on the mounting seat.

[0011] As a preferred solution, a slide rail is provided on the bottom plate, and the mounting seat is slidably matched with the slide rail.

[0012] As a preferred solution, the reflective surface of the prism has an inclination angle of 45°, which is used to make a 90° turn of the light projected by the light source onto the prism.

[0013] As a preferred solution, a limiting block is installed on the bottom plate, and limiting parts are respectively provided at both ends of the limiting block, and the limiting parts at both ends are in contact and cooperation with the mounting seat.

[0014] As a preferred solution, a dust shielding plate is provided on the bottom plate, and the prism and the dust shielding plate can move relative to each other, so that the prism and the dust shielding plate are arranged opposite to each other or staggered.

[0015] As a preferred solution, the dust shielding plate has a dustproof surface, and when the prism and the dust shielding plate are arranged opposite to each other, there is a gap between the dustproof surface and the reflective surface of the prism.

[0016] As a preferred solution, the lens is arranged between the camera and the light source.

[0017] As a preferred solution, the camera, the lens and the light source can be detachably mounted on the base plate so that the heights of the camera, the lens and the light source can be adjusted.

[0018] The utility model also provides a bonding machine, comprising a bonding head and an optical adjustment assembly as described in any of the above schemes, wherein a splitter, a cutter and a wire nozzle are installed on the bonding head, and the optical adjustment assembly is used to capture images of the gap and coaxiality between the splitter, the cutter and the wire nozzle.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides an image acquisition optical adjustment component with a simple and practical structure, which can realize switching between a top view and a side view for image acquisition of a splitter, a cutter and a wire nozzle, and does not need to realize observation of views of different viewing angles through the color or wavelength of light, thus avoiding the occurrence of virtual images and improving the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an optical adjustment assembly according to an embodiment of the utility model;

[0023] Figure 2 is a schematic diagram of another viewing angle of the optical adjustment assembly of an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the light directing state of the optical adjustment assembly of the embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the light turning state of the optical adjustment component of the embodiment of the utility model;

[0026] Figure 5 It is a side view of a cutter, a splitter and a conductor nozzle of an embodiment of the utility model;

[0027] Figure 6 It is a bottom view of the cutter, the rake and the wire nozzle of the embodiment of the utility model;

[0028] In the figure: 1 bottom plate, 11 slide rail, 12 limit block, 2 camera, 3 lens, 4 light source, 5 reflection unit, 51 mounting seat, 52 prism, 6 dust shield, A cutter, B chopper, C wire nozzle. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] In the description of the embodiments of the present application, terms such as "upper", "lower", "front", and "back" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the application.

[0031] According to some embodiments of the present application, Figures 1 to 6 As shown, an image acquisition optical adjustment component is provided, which is used for acquiring images of a cutter A, a splitter B and a wire nozzle C, and comprises a base plate 1 and a camera 2, a lens 3, a light source 4 and a reflection unit 5 installed on the base plate 1, wherein the camera 2 is connected to the lens 3, the lens 3 is connected to the light source 4, and the camera 2, the lens 3 and the light source 4 are coaxially arranged; the reflection unit 5 is slidably matched with the base plate 1, so that the light source 4 and the reflection unit 5 are staggered or arranged opposite to each other;

[0032] When the light source 4 and the reflective unit 5 are arranged in a staggered manner, the light source 4 directly illuminates the sides of the cutter A, the splitter B and the wire nozzle C, and the camera 2 captures images of the gaps between the three (e.g. Figure 5 When the light source 4 and the reflective unit 5 are arranged opposite to each other, the light source 4 is reflected by the reflective unit 5 and illuminates the bottom surfaces of the cutter A, the splitter B and the wire nozzle C, and the coaxiality of the three is captured by the camera 2 (as shown in FIG. Figure 6 shown).

[0033] Specifically, the reflection unit 5 includes a mounting seat 51 and a prism 52. The prism 52 is fixed on the mounting seat 51. The prism 52 is used to reflect the light projected by the light source so that the emitted light is irradiated on the splitting knife, the cutting knife and the wire nozzle.

[0034] Furthermore, a slide rail 11 is provided on the base plate 1, and the mounting seat 51 is slidably matched with the slide rail 11, and the reflecting unit 5 can slide relatively along the slide rail 11, so that the reflecting unit 5 is respectively in a first working position and a second working position. The so-called first working position means that the prism 52 and the light source 4 are staggered and are in a non-working state; the so-called second working position means that the prism 52 and the light source 4 are arranged opposite to each other and are in a working state.

[0035] Furthermore, the reflective surface of the prism 52 has an inclination angle of 45°, which is used to make a 90° turn of the light projected by the light source 4 onto the prism 52 (e.g. Figure 4(as indicated by the Y in the figure).

[0036] Specifically, when the side view of the cutter, the riving knife and the guide nozzle is imaged (eg Figure 3 As shown in the figure, T indicates the components of the cutter, splitter and guide nozzle), the light source directly illuminates the cutter, splitter and guide nozzle, and the gap between the three is collected by the camera, and then adjusted to the appropriate distance according to the welding requirements. When the image of the top view of the cutter, splitter and guide nozzle is collected (such as Figure 4 As shown in the figure, T indicates the component composed of the cutter, the splitter and the wire nozzle), the light source is irradiated onto the prism, and after an optical path deflection, it is irradiated onto the cutter, the splitter and the wire nozzle, and the coaxiality of the three is collected by the camera, and then adjusted to the appropriate position according to the welding requirements.

[0037] According to some embodiments of the present application, a limit block 12 is installed on the base plate 1, and limit portions 121 are respectively provided at both ends of the limit block 12. The limit portions 121 at both ends are in contact and cooperate with the mounting seat 51. When the mounting seat 51 respectively conflicts with the two limit portions 121, the prism 52 can be respectively in the first working position and the second working position.

[0038] According to some embodiments of the present application, a dust shielding plate 6 is provided on the bottom plate 1, and the prism 52 and the dust shielding plate 6 can move relative to each other so that the prism 52 and the dust shielding plate 6 are arranged opposite to each other or staggered.

[0039] Furthermore, the dust shielding plate 6 has a dustproof surface 61. When the prism 52 is arranged opposite to the dust shielding plate 6, there is a gap between the dustproof surface 61 and the reflective surface 521 of the prism 52. When the prism 52 is in the first working position, it can shield the prism from dust and prevent dust impurities from appearing on the reflective surface of the prism.

[0040] According to some embodiments of the present application, the lens 3 is disposed between the camera 2 and the light source 4, and the light source 4 projects light to the cutter A, the splitter B and the wire nozzle C, and the camera 2 and the lens 3 cooperate to collect images.

[0041] In some embodiments, the camera 2, the lens 3 and the light source 4 are detachably mounted on the bottom plate 1, so that the height of the camera 2, the lens 3 and the light source 4 is adjustable, and the height position of the camera, the lens and the light source can be adjusted according to the horizontal position of the splitter, the cutter and the wire nozzle, and then the coaxiality of the cutter, the splitter and the large wire nozzle can be imaged by reflecting light, such as Figure 6 The coaxial line marked P is shown in the figure.

[0042] According to some embodiments of the present application, a bonding machine is also provided, including a bonding head and the optical adjustment assembly as described above, on which a splitting knife, a cutting knife and a wire nozzle are mounted, and the optical adjustment assembly is used to capture images of the gap and coaxiality between the splitting knife, the cutting knife and the wire nozzle.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] The above description is only a detailed description of the preferred embodiments and principles of the present application. For ordinary technicians in this field, there will be changes in the specific implementation methods based on the ideas provided by the present application, and these changes should also be regarded as the scope of protection of the present application.

Claims

1. An image acquisition optical adjustment component, used for acquiring images of a bonder's splitter, cutter and wire nozzle, characterized in that: It comprises a bottom plate, and a camera, a lens, a light source and a reflection unit installed on the bottom plate, wherein the camera is connected to the lens, the lens is connected to the light source, and the camera, the lens and the light source are coaxially arranged; the reflection unit is slidably matched with the bottom plate, so that the light source and the reflection unit are staggered or arranged opposite to each other; Among them, when the light source and the reflecting unit are arranged in a staggered manner, the light source directly shines on the sides of the splitting knife, the cutting knife and the wire nozzle, and the camera is used to collect images of the gaps between the three; when the light source and the reflecting unit are arranged directly opposite to each other, the light source is reflected by the reflecting unit and then shines on the bottom surfaces of the splitting knife, the cutting knife and the wire nozzle, and the camera is used to collect images of the coaxiality of the three.

2. The image acquisition optical adjustment component according to claim 1, characterized in that: The reflection unit comprises a mounting seat and a prism, and the prism is fixed on the mounting seat.

3. The image acquisition optical adjustment component according to claim 2, characterized in that: The bottom plate is provided with a slide rail, and the mounting seat is slidably matched with the slide rail.

4. The image acquisition optical adjustment component according to claim 2, characterized in that: The reflective surface of the prism has an inclination angle of 45°, which is used to make a 90° turn of the light projected by the light source onto the prism.

5. The image acquisition optical adjustment component according to claim 2, characterized in that: A limiting block is installed on the bottom plate, and limiting parts are respectively arranged at both ends of the limiting block, and the limiting parts at both ends are in contact and cooperation with the mounting seat.

6. The image acquisition optical adjustment component according to claim 2, characterized in that: A dust shielding plate is provided on the bottom plate, and the prism and the dust shielding plate can move relative to each other, so that the prism and the dust shielding plate are arranged opposite to each other or staggered.

7. The image acquisition optical adjustment component according to claim 6, characterized in that: The dust shielding plate has a dustproof surface. When the prism and the dust shielding plate are arranged opposite to each other, there is a gap between the dustproof surface and the reflective surface of the prism.

8. The image acquisition optical adjustment component according to claim 1, characterized in that: The lens is arranged between the camera and the light source.

9. The image acquisition optical adjustment component according to claim 1, characterized in that: The camera, the lens and the light source can be detachably mounted on the bottom plate so that the heights of the camera, the lens and the light source can be adjusted.

10. A bonding machine, characterized in that: It comprises a bungee and an optical adjustment assembly as claimed in any one of claims 1 to 9, wherein a splitter, a cutter and a wire nozzle are mounted on the bungee, and the optical adjustment assembly is used to collect images of the gap and coaxiality between the splitter, the cutter and the wire nozzle.

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