Film loading machine table lens calibration jig

Abstract

The utility model discloses a kind of plate mounting machine table lens calibration jigs, comprising: standard glass sheet, protection part, support gasket group and pedestal, pedestal is located the lowermost, the bottom of pedestal is connected with machine table track, support gasket group is detachably arranged at the top of pedestal, the top of support gasket group is provided with protection part, protection part is connected with support gasket group and pedestal by bolt, standard glass sheet is installed at the top of protection part, the utility model provides a kind of plate mounting machine table lens calibration jig, which can automatically position the position of glass sheet and lens center, adjust and calibrate glass sheet height, improve calibration efficiency and calibration accuracy.

Description

Technical Field

[0001] This utility model relates to the field of vision lens calibration equipment, and more specifically to a lens calibration fixture for a film loading machine. Background Technology

[0002] Die bonders (or die attachers) are critical equipment in semiconductor packaging and electronic assembly, used to precisely mount chips (dies) or other tiny components onto substrates, lead frames, or package carriers. Their lens systems (typically high-precision optical systems or cameras) play a vital role, primarily performing visual positioning, accuracy compensation and calibration, quality inspection and control, autofocus and height measurement, and data recording and analysis. During production, frequent switching between different products can lead to lens blurring or inaccuracies, necessitating the use of calibration glass plates to calibrate the lens.

[0003] Currently, the calibration fixture for slide loading equipment is a calibration glass slide, which has two main drawbacks: 1. The glass slide is manually placed on the mounting plate by hand, and the position and orientation of the glass slide must be frequently adjusted by the person to ensure that the center of the glass slide is aligned with the center of the lens. This manual positioning method is not standardized and has low efficiency.

[0004] 2. When switching between products with different frame thicknesses, the height of the support block for the glass sheet cannot be adjusted. Software used during the sheet loading process is required to assist in optimizing and compensating for the height, which results in inaccurate precision issues. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a lens calibration fixture for a mounting machine that automatically positions the glass plate relative to the center of the lens and allows for adjustable calibration glass plate height, thereby improving calibration efficiency and accuracy.

[0006] According to one aspect of this utility model, a lens calibration fixture for a mounting machine is provided, comprising: a standard glass plate, a protective part, a support pad assembly, and a base. The base is located at the bottom and its bottom is connected to the machine track. The support pad assembly is detachably mounted on the top of the base, and the protective part is mounted on the top of the support pad assembly. The protective part is connected to the support pad assembly and the base by bolts, and the standard glass plate is mounted on the top of the protective part. The connection between the base and the machine track facilitates the transport of the standard glass plate to the area below the lens for calibration. The protective part protects the standard glass plate from damage during movement. The detachably mounted support pad assembly ensures consistency with the thickness of frames of different specifications requiring mounting, avoiding errors caused by software compensation and enabling more precise lens calibration.

[0007] In some embodiments, the protective part includes: a body, a mounting groove, a first mounting hole, and a gripping groove. The mounting groove is provided in the middle of the top of the body, and the first mounting hole is provided in the bottom of the body. The first mounting hole has several portions, and several gripping grooves are provided on both sides of the mounting groove. A bolt is threadedly connected to the first mounting hole. The mounting groove defines and protects the standard glass sheet, and the first mounting hole facilitates fixing the body to the base.

[0008] In some embodiments, a standard glass slide is inserted into a mounting groove, with the mounting groove and the standard glass slide making a transition fit. The position of the standard glass slide is thus defined by the tight fit between the mounting groove and the standard glass slide.

[0009] In some implementations, the support pad assembly consists of a single support pad; Alternatively, a combination of multiple support pads of different thicknesses; Alternatively, a combination of multiple support pads of the same thickness; Alternatively, a combination of multiple support pads of the same thickness and multiple support pads of different thicknesses can be used. The thickness of the frame to be mounted is then matched to the thickness of the support pads.

[0010] In some implementations, the thickness of the support pads is 1 mil, 2 mil, 4 mil, 5 mil, 6 mil, or 8 mil. The thickness of the support pads, and combinations thereof, is consistent with the thickness of the frame on which the plates need to be mounted.

[0011] In some embodiments, the support pad has a plurality of second mounting holes, the positions of which correspond to the positions of the first mounting holes. Bolts pass through the second mounting holes and are threaded into the first mounting holes. The support pad is fixed to the bottom of the protective part through the second mounting holes.

[0012] In some implementations, the base has several grooves at its bottom that match the machine tool track.

[0013] In some embodiments, the base is provided with a plurality of third mounting holes, the positions of which correspond to the positions of the first mounting holes. Bolts pass through the third mounting holes, the second mounting holes, and the first mounting holes for threaded connection. The base, support pad, protective part, and standard glass plate are integrated into a whole by bolts passing through the third mounting holes, the second mounting holes, and the first mounting holes for threaded connection.

[0014] This invention offers several advantages over existing technologies, including automatic positioning of the glass plate relative to the lens center, adjustable calibration glass plate height, improved calibration efficiency, and enhanced calibration accuracy. The base connects to the machine track, facilitating the transport of the standard glass plate to the area below the lens for calibration. A protective section safeguards the standard glass plate from damage during transport. A detachable support pad assembly ensures consistency with the thickness of frames of varying sizes requiring plate mounting, avoiding errors caused by software compensation and enabling more precise lens calibration. A mounting groove defines and protects the standard glass plate, while a first mounting hole secures the main body to the base. The mounting groove's tight fit with the standard glass plate further defines its position. Support pads of varying thicknesses, and combinations thereof, maintain consistency with the thickness of the frames requiring plate mounting. Bolts passing through a third mounting hole and threaded connections between the second and first mounting holes integrate the base, support pads, protective section, and standard glass plate into a single unit. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the lens calibration fixture for the film loading machine of this utility model; Figure 2 This is an exploded view of the lens calibration fixture for the film loading machine of this utility model; Figure 3 This is a schematic diagram of the protective part of the lens calibration fixture for the film loading machine of this utility model; Figure 4 This is a schematic diagram of the base of the lens calibration fixture for the mounting machine of this utility model. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0017] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.

[0018] like Figure 1 and Figure 2As shown, the lens calibration fixture for the mounting machine of this utility model includes: a standard glass plate 1, a protective part 2, a support pad assembly 3, and a base 4. The base 4 is located at the bottom, and its bottom is connected to the machine tool track. The support pad assembly 3 is detachably mounted on the top of the base 4, and the protective part 2 is mounted on the top of the support pad assembly 3. The protective part 2 is connected to the support pad assembly 3 and the base 4 by bolts, and the standard glass plate 1 is mounted on the top of the protective part 2. The connection between the base 4 and the machine tool track facilitates the transport of the standard glass plate 1 to the area below the lens for calibration. The protective part 2 provides protection for the standard glass plate 1 to prevent damage during movement. The detachably mounted support pad assembly 3 ensures consistency with the thickness of frames of different specifications requiring mounting, avoiding errors caused by software compensation and enabling more accurate lens calibration.

[0019] The standard glass plate 1, also known as the calibration plate, is used to calibrate the vision lens to ensure high accuracy during shooting or measurement. It determines the conversion relationship between physical dimensions and pixels, as well as the relationship between the three-dimensional geometric position of a point on the surface of a spatial object and its corresponding point in the image. The glass-based calibration plate is suitable for transmission-type vision measurement systems and features a low coefficient of thermal expansion, high accuracy, high hardness, and good corrosion resistance. Standard manufacturing processes include polishing, cleaning, and coating of the glass substrate. The accuracy of the standard glass plate 1 must reach 1 micrometer; due to the high manufacturing requirements, a single standard glass plate 1 is relatively expensive. Furthermore, the standard glass plate 1 must be kept fixed during the vision lens calibration process.

[0020] like Figure 3 As shown, the protective part 2 includes: a body 21, a mounting groove 22, a first mounting hole 23, and a gripping groove 24. The mounting groove 22 is provided in the middle of the top of the body 21, and the first mounting hole 23 is provided in the bottom of the body 21. The first mounting hole 23 has several holes, and several gripping grooves 24 are provided on both sides of the mounting groove 22. Bolts are threadedly connected to the first mounting hole 23. The mounting groove 22 defines and protects the standard glass plate 1, and the first mounting hole 23 facilitates the fixing of the body 21 to the base 4.

[0021] In the specific implementation process, the body 21 can be made of engineering plastic material, which can ensure a certain strength while avoiding scratching the standard glass plate 1.

[0022] The first mounting hole 23 is a threaded hole and a countersunk hole.

[0023] A standard glass plate 1 is inserted into the mounting groove 22, with the mounting groove 22 and the standard glass plate 1 making a transition fit. The tight fit between the mounting groove 22 and the standard glass plate 1 thus defines the position of the standard glass plate 1. Of course, if the material of the body 21 is flexible enough, an interference fit is also allowed.

[0024] Support pad group 3 consists of one support pad 5; Alternatively, a combination of multiple support pads 5 of different thicknesses; Alternatively, a combination of multiple support pads 5 of the same thickness; Alternatively, a combination of multiple support pads 5 of the same thickness and multiple support pads 5 of different thicknesses. The thickness of the frame to be mounted is kept consistent by using support pads 5 of different thicknesses and combinations thereof.

[0025] The thickness of the support pad 5 is 1 mil, 2 mil, 4 mil, 5 mil, 6 mil, or 8 mil. The thickness of the support pad 5 varies, and combinations of support pads 5 of different thicknesses are used to ensure consistency with the thickness of the frame on which the plates need to be mounted.

[0026] This combination of different thicknesses can cover the thickness of most frames currently on the market. Mil, also known as milliinch, is a unit of length commonly used in the circuit board and semiconductor industries. 1 mil = 25.4 μm (micrometer).

[0027] The support pad 5 is provided with several second mounting holes 51, the positions of which correspond to the positions of the first mounting holes 23. Bolts pass through the second mounting holes 51 and are threaded into the first mounting holes 23. The support pad 5 is fixed to the bottom of the protective part 2 through the second mounting holes 51.

[0028] like Figure 4 As shown, the base 4 has several grooves 42 at its bottom, which match the machine tool track.

[0029] The base 4 is provided with several third mounting holes 41, the positions of which correspond to the positions of the first mounting holes 23. Bolts pass through the third mounting holes 41, the second mounting holes 51, and the first mounting holes 23 for threaded connection. The base 4, the support pad 5, the protective part 2, and the standard glass plate 1 are formed into a whole by bolts passing through the third mounting holes 41, the second mounting holes 51, and the first mounting holes 23 for threaded connection.

[0030] To ensure relative structural strength, the support pad 5 and the base 4 can be made of metal. The second mounting hole 51 and the third mounting hole 41 are through holes.

[0031] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A lens calibration fixture for a film loading machine, characterized in that, include: The system comprises a standard glass plate, a protective part, a support pad assembly, and a base. The base is located at the bottom and its bottom is connected to the machine tool track. The support pad assembly is detachably mounted on the top of the base. The protective part is mounted on the top of the support pad assembly. The protective part is connected to the support pad assembly and the base by bolts. The standard glass plate is mounted on the top of the protective part.

2. The lens calibration fixture for the mounting machine according to claim 1, characterized in that, The protective part includes: a body, a mounting groove, a first mounting hole, and a gripping groove. The mounting groove is provided in the middle of the top of the body, and the first mounting hole is provided at the bottom of the body. The first mounting hole has a plurality of holes, and a plurality of gripping grooves are provided on both sides of the mounting groove. The bolt is threadedly connected to the first mounting hole.

3. The lens calibration fixture for the mounting machine according to claim 2, characterized in that, The standard glass plate is inserted into the mounting groove, and the mounting groove is fitted with the standard glass plate.

4. The lens calibration fixture for the mounting machine according to claim 3, characterized in that, The support pad assembly consists of one support pad. Alternatively, a combination of multiple support pads of different thicknesses; Alternatively, a combination of multiple support pads of the same thickness; Alternatively, a combination of multiple support pads of the same thickness and multiple support pads of different thicknesses.

5. The lens calibration fixture for the mounting machine according to claim 4, characterized in that, The thickness of the support pad is: 1mil, 2mil, 4mil, 5mil, 6mil or 8mil.

6. The lens calibration fixture for the mounting machine according to claim 5, characterized in that, The support pad is provided with a plurality of second mounting holes, the positions of the second mounting holes corresponding to the positions of the first mounting holes, and the bolts passing through the second mounting holes and threadedly connected to the first mounting holes.

7. The lens calibration fixture for the mounting machine according to claim 6, characterized in that, The base has several grooves at its bottom, which match the machine tool track.

8. The lens calibration fixture for the mounting machine according to claim 7, characterized in that, The base is provided with a plurality of third mounting holes, the positions of which correspond to the positions of the first mounting holes, and the bolts pass through the third mounting holes, the second mounting holes and the first mounting holes for threaded connection.

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