Infrared monitoring anti-collision device of ultrasonic scanner lens

Abstract

The utility model relates to the technical field of scanner lens protection, in particular to an infrared monitoring anti-collision device of an ultrasonic scanner lens, which comprises a height detection mechanism mounted on the scanner lens, the height detection mechanism comprises a detection outer ring fixedly mounted on the scanner lens, and the detection outer ring is annular. A first infrared transmitting end, a second infrared transmitting end, a third infrared transmitting end and a fourth infrared transmitting end are arranged on the outer detection ring in a circumferential array mode. The detection outer ring is mounted on the scanning lens, and the four infrared transmitting ends are mounted on the detection outer ring, so that the position of the stainless steel pressing plate can be detected by using the first infrared transmitting end, the second infrared transmitting end, the third infrared transmitting end and the fourth infrared transmitting end, and the height of the stainless steel pressing plate can be detected; the scanning lens stops moving when the scanning lens is about to impact the stainless steel pressing plate, so that the risk of lens crashing is reduced, the abnormity is reduced, the efficiency is improved, and the lens replacement cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of scanner lens protection, in particular to an infrared monitoring anti-collision device for an ultrasonic scanner lens. Background Technique

[0002] During the semiconductor packaging and testing process, it is necessary to use equipment to scan the entire plastic-encapsulated product to check whether there is delamination in the product after plastic encapsulation and singulation. When the equipment scans the plastic-encapsulated product, the operation is achieved through a scanning lens. When using the scanning lens, it is necessary to control the horizontal and vertical positions of the scanning lens, so as to facilitate a full inspection of the plastic-encapsulated product of the equipment.

[0003] In the above process, it is necessary to fix the semiconductor. Usually, stainless steel plates are used to press the product around the semiconductor. Subsequently, when the scanning lens can continuously descend to the platform surface, the scanning lens will hit the stainless steel plate with a higher position, causing damage to the scanning lens.

[0004] Therefore, it is necessary to install an anti-collision device for the scanning lens for treatment. For example, in the patent document with the application number: 202420096881.0, a thermal imaging lens with an anti-collision mechanism is disclosed, and it is specifically disclosed that the support platform of the thermal imaging lens is installed on the bracket assembly, and the multilayer coated UV on the bracket assembly and the lens body protection cover are used to shield and protect the lens front-end lens and the lens body circumference respectively.

[0005] In the above technical solution, due to the external bracket assembly, the overall size of the lens is relatively large, resulting in the lens being unable to contact the surface of the semiconductor product for close detection. At the same time, when using the multilayer coated UV to protect the lens front-end lens, the accuracy of the lens image intake will be affected, resulting in the accuracy of the final detection result. Content of the Utility Model

[0006] The technical problem solved by the utility model is: to solve the problem in the prior art that the external bracket assembly causes the overall size of the lens to be relatively large, resulting in the lens being unable to accurately contact the semiconductor surface for detection.

[0007] The utility model can be realized through the following technical solutions: an infrared monitoring anti-collision device for an ultrasonic scanner lens, including a height detection mechanism installed on the scanning lens. The height detection mechanism includes a detection outer ring fixedly installed on the scanning lens. The detection outer ring is annular, and a first infrared emission end, a second infrared emission end, a third infrared emission end, and a fourth infrared emission end are circumferentially arranged on the detection outer ring.

[0008] A further technical improvement of the present utility model lies in that: the detection outer ring includes a detection housing, an extrusion plate is slidably arranged on the detection housing, and the first infrared emission end, the second infrared emission end, the third infrared emission end and the fourth infrared emission end are respectively installed on the extrusion plate, and the extrusion plate is annular.

[0009] A further technical improvement of the present utility model lies in that: a filling extrusion rubber is filled on the surface of the extrusion plate away from the first infrared emission end, the second infrared emission end, the third infrared emission end and the fourth infrared emission end.

[0010] A further technical improvement of the present utility model lies in that: a detection rod body is installed on the extrusion plate.

[0011] A further technical improvement of the present utility model lies in that: a rod sleeve is installed on the extrusion plate, a pressure detector is fixed at the inner top end of the rod sleeve, a sliding plate for cooperating with the pressure detector is slidably arranged inside the rod sleeve, and a contact pressing plate is installed at one end of the sliding plate away from the pressure detector through a sliding rod.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] 1. In this application, by installing a detection outer ring on the scanning lens and installing four infrared emission ends on the detection outer ring, it is possible to detect the position of the stainless steel pressing plate by using the first infrared emission end, the second infrared emission end, the third infrared emission end and the fourth infrared emission end, and to detect the height of the stainless steel pressing plate. When the scanning lens is about to hit the position of the stainless steel pressing plate, the movement stops, reducing the risk of damaging the lens, reducing abnormalities, improving efficiency, and saving the cost of replacing the lens.

[0014] 2. Through the setting of the filling extrusion rubber in this application, there may be inertia before the scanning lens stops. The detection rod body is buffered according to the filling rubber. At the same time, in this application, the position of the lowest end of the detection rod body is lower than the position of the lowest end of the scanning lens, so that the position of the scanning lens can be restricted by using the detection rod body, avoiding the problem of damage to the scanning lens caused by the direct contact of the scanning lens on the stainless steel pressing plate.

[0015] 3. By setting the contact pressing plate in this application, under the action of gravity, the contact pressing plate automatically droops, and the sliding plate drops to the lowest end of the rod sleeve. When the detection functions of the first infrared emission end, the second infrared emission end, the third infrared emission end and the fourth infrared emission end fail, at this time, when the contact pressing plate touches the stainless steel pressing plate, it moves upward until the sliding plate and the pressure detector sense each other, so that the emergency braking function is realized mechanically, protecting the scanning lens and extending the replacement cycle of the scanning lens. Description of the Drawings

[0016] For the convenience of those skilled in the art to understand, the following further describes the present utility model in conjunction with the accompanying drawings.

[0017] Figure 1 Schematic diagram of the position of the stainless steel pressing plate in Embodiment 1 of the present utility model;

[0018] Figure 2 Schematic diagram of the position of the stainless steel pressing plate in Embodiment 2 of the present utility model;

[0019] Figure 3 Schematic diagram of the position of the stainless steel pressing plate in Embodiment 3 of the present utility model;

[0020] Figure 4 Top view of the chip product and the stainless steel pressing plate of the present utility model;

[0021] Figure 5 Schematic diagram of the position of the scanning lens of the present utility model;

[0022] Figure 6 Schematic diagram of the position of the height detection mechanism of the present utility model;

[0023] Figure 7 For the present utility model Figure 6 Partial enlarged view of A in;

[0024] Figure 8 Schematic diagram of the position of the contact pressing plate of the present utility model.

[0025] In the figure: 1. Chip product; 2. Stainless steel pressing plate; 3. Scanning lens; 4. Detection platform; 5. Height detection mechanism; 51. First infrared emission end; 52. Detection outer ring; 53. Second infrared emission end; 54. Third infrared emission end; 55. Fourth infrared emission end; 56. Detection rod body; 561. Pressure detector; 562. Rod sleeve; 563. Sliding plate; 564. Sliding rod; 565. Contact pressing plate; 57. Detection housing; 58. Filling and extruding rubber; 59. Extrusion plate. Specific embodiments

[0026] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0027] Please refer to Figure 1-8As shown in the figure, an infrared monitoring anti-collision device for an ultrasonic scanner lens includes a height detection mechanism 5, where the height detection mechanism 5 is installed at the outer end of the scanning lens 3. Specifically, first, the chip product 1 is placed on the detection platform 4, and then the stainless steel pressing plate 2 is used to press down to fix the chip product 1 on the detection platform 4. Subsequently, the horizontal and vertical positions of the scanning lens 3 are controlled to enable the scanning lens 3 to scan and detect the chip product 1.

[0028] Among them, the height detection mechanism 5 includes a detection outer ring 52. The detection outer ring 52 is annular and is fixedly installed on the outer ring of the scanning lens 3 for installing the height detection components. The height detection components include a first infrared emission end 51, a second infrared emission end 53, a third infrared emission end 54, and a fourth infrared emission end 55. The first infrared emission end 51, the second infrared emission end 53, the third infrared emission end 54, and the fourth infrared emission end 55 are arranged in a circumferential array on the detection outer ring 52, and the adjacent infrared emission ends are 90 degrees centered on the center position of the detection outer ring 52.

[0029] Embodiment 1

[0030] When the stainless steel pressing plate 2 is between the first infrared emission end 51 and the third infrared emission end 54, at this time, the first infrared emission end 51 and the third infrared emission end 54 respectively sense the positions of the detection platform 4 and the chip product 1. At this time, the stainless steel pressing plate 2 is exactly below the scanning lens 3. If the presence of the stainless steel pressing plate 2 cannot be sensed in time at this time, it will cause damage to the scanning lens 3. Therefore, in this embodiment, the first infrared emission end 51 and the third infrared emission end 54 are used to detect whether there is a height difference. If so, the second infrared emission end 53 and the fourth infrared emission end 55 are activated. Through the detection of the second infrared emission end 53 and the fourth infrared emission end 55, the height of the stainless steel pressing plate 2 is obtained, which is convenient for initially ensuring the position of the scanning lens 3.

[0031] Embodiment 2

[0032] When the stainless steel pressing plate 2 is located below the first infrared emitting end 51, the second infrared emitting end 53, and the fourth infrared emitting end 55, the height of the stainless steel pressing plate 2 detected by the first infrared emitting end 51, the second infrared emitting end 53, and the fourth infrared emitting end 55 at this time is recorded as h1. At this time, the height of the product at the position detected by the third infrared emitting end 54 is recorded as h2. At this time, according to the possible thickness of the chip product 1, a thickness parameter h* of the chip product 1 is assigned, and the height difference t = h1 - h2 is obtained. Then, the magnitudes of t and h* are judged. If t is greater than h*, then the height of the detection platform 4 is obtained by the third infrared emitting end 54 at this time. If t is less than or equal to h*, then the height of the chip product 1 is obtained by the third infrared emitting end 54 at this time. In this embodiment, the position of the scanning lens 3 can be accurately obtained, and control is performed according to the position of the scanning lens 3 to avoid the scanning lens 3 hitting the chip product 1.

[0033] Embodiment 3

[0034] When the stainless steel pressing plate 2 is located below the first infrared emitting end 51, the height of the stainless steel pressing plate 2 is obtained and recorded as h1. At this time, the heights of the product at the position detected by the second infrared emitting end 53, the third infrared emitting end 54, and the fourth infrared emitting end 55 are recorded as h2. At this time, according to the possible thickness of the chip product 1, a thickness parameter h* of the chip product 1 is assigned, and the height difference t = h1 - h2 is obtained. Then, the magnitudes of t and h* are judged. If t is greater than h*, then the height of the detection platform 4 is obtained by the second infrared emitting end 53, the third infrared emitting end 54, and the fourth infrared emitting end 55 at this time. If t is less than or equal to h*, then the height of the chip product 1 is obtained by the second infrared emitting end 53, the third infrared emitting end 54, and the fourth infrared emitting end 55 at this time. In this embodiment, the position of the scanning lens 3 can be accurately obtained, and control is performed according to the position of the scanning lens 3 to avoid the scanning lens 3 hitting the chip product 1.

[0035] As a further embodiment of the present application, the detection outer ring 52 includes a detection housing 57, which is in a hollow state. A pressing plate 59 is slidably arranged inside the detection housing 57. The pressing plate 59 and the inside of the detection housing 57 are filled with a filling and pressing rubber 58. A detection rod body 56 is fixed to one end of the pressing plate 59 away from the filling and pressing rubber 58. The detection rod body 56 is respectively closely adjacent to the first infrared emission end 51, the second infrared emission end 53, the third infrared emission end 54, and the fourth infrared emission end 55. That is, in use, when initially detecting using the first infrared emission end 51, the second infrared emission end 53, the third infrared emission end 54, and the fourth infrared emission end 55, height parameters are obtained. Subsequently, the detection rod body 56 is used to contact the product. If at this time, due to problems with the detection accuracy of the first infrared emission end 51, the second infrared emission end 53, the third infrared emission end 54, and the fourth infrared emission end 55, the detection result is inaccurate, the detection rod body 56 pushes the pressing plate 59 upward at this time, causing the filling and pressing rubber 58 to be squeezed to achieve buffering. At the same time, when the detection rod body 56 moves to the highest position, the height of the lowest end of the detection rod body 56 is always lower than the height of the lowest end of the scanning lens 3, thereby realizing the protective effect on the scanning lens 3.

[0036] As a further embodiment of the present application, when there are problems with the detection accuracy of the first infrared emission end 51, the second infrared emission end 53, the third infrared emission end 54, and the fourth infrared emission end 55, the present application performs mechanical detection through the detection rod body 56. This detection method is realized by the cooperation of a rod sleeve 562 and a sliding rod 564 for the detection rod body 56, that is, the rod sleeve 562 is fixedly installed on the pressing plate 59. At this time, the rod sleeve 562 has a hollow structure. A pressure detector 561 is fixed to the highest end of the rod sleeve 562. A sliding plate 563 is slidably arranged inside the rod sleeve 562. One end of the sliding plate 563 facing the pressure detector 561 is provided with an induction metal. A sliding rod 564 is fixed to the end of the sliding plate 563 away from the pressure detector 561. A contact pressing plate 565 is fixed to the end of the sliding rod 564 away from the sliding plate 563. In use, the contact pressing plate 565 first contacts the product at a position. At this time, the position of the product is fixed, and initial detection is performed through the first infrared emission end 51, the second infrared emission end 53, the third infrared emission end 54, and the fourth infrared emission end 55. When the detection fails, the contact pressing plate 565 moves upward at this time until the sliding plate 563 moves onto the pressure detector 561. At this time, a stop instruction is sent, and the filling and pressing rubber 58 is used to buffer the acting force, reducing the damage to the scanning lens 3.

[0037] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the technical content disclosed above. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An infrared monitoring and anti-collision device for an ultrasonic scanner lens, comprising a height detection mechanism (5) mounted on a scanning lens (3), characterized in that: The height detection mechanism (5) comprises a detection outer ring (52) fixedly mounted on the scanning lens (3); the detection outer ring (52) is annular, and a circular array on the detection outer ring (52) comprises a first infrared emitting end (51), a second infrared emitting end (53), a third infrared emitting end (54) and a fourth infrared emitting end (55).

2. The infrared monitoring and anti-collision device for an ultrasonic scanner lens according to claim 1, characterized in that: The detection outer ring (52) comprises a detection shell (57), the detection shell (57) is slidably provided with an extrusion plate (59), and the first infrared emitting end (51), the second infrared emitting end (53), the third infrared emitting end (54) and the fourth infrared emitting end (55) are respectively mounted on the extrusion plate (59), and the extrusion plate (59) is ring-shaped.

3. The infrared monitoring and anti-collision device for an ultrasonic scanner lens according to claim 2, characterized in that: A surface of the extrusion plate (59) away from the first infrared emitting end (51), the second infrared emitting end (53), the third infrared emitting end (54) and the fourth infrared emitting end (55) is filled with filling extrusion rubber (58).

4. The infrared monitoring and anti-collision device for an ultrasonic scanner lens according to claim 2, characterized in that: A detection rod body (56) is mounted on the extrusion plate (59).

5. The infrared monitoring and anti-collision device for an ultrasonic scanner lens according to claim 2, characterized in that: A rod sleeve (562) is installed on the extrusion plate (59), a pressure detector (561) is fixed to the inner top end of the rod sleeve (562), a sliding plate (563) for cooperating with the pressure detector (561) is slidably arranged inside the rod sleeve (562), and a contact pressure plate (565) is installed at one end of the sliding plate (563) away from the pressure detector (561) through a sliding rod (564).

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