Sensor pasting jig

Abstract

The application relates to a sensor film pasting jig, which comprises a base, a containing cavity for placing a product and a cutting groove are formed in the base, a suction hole is formed in the bottom of the containing cavity, a vacuum channel is formed in the base, the vacuum channel is communicated with the suction hole, an insert is mounted in the cutting groove, a notch is formed in the insert, the hardness of the insert is greater than that of the base, in use, the product is placed in the containing cavity, the product abuts against the side wall of the containing cavity, and the product is fixed by suction through the suction hole. The film pasting jig can simultaneously realize sensor cutting and film pasting and cap film pasting, one set of mold cost is saved, the mold does not need to be replaced, and manpower is saved.

Description

Technical Field

[0001] This application relates to sensor processing technology, specifically to a sensor film bonding fixture. Background Technology

[0002] In sensor manufacturing, encapsulation cutting and film application, and capping are critical steps, typically involving covering sensor elements or housings with protective or functional films. Traditionally, these two steps rely on specialized fixtures—specifically, separately designed jigs or tools—which are inconvenient to use and increase the manufacturing cost of these fixtures or tools. Utility Model Content

[0003] To overcome the above-mentioned defects, this application provides a sensor film-applying fixture that can simultaneously perform sensor cutting and film application and cover film application, saving the cost of a set of molds and eliminating the need to replace molds, thus saving manpower.

[0004] The technical solution adopted by this application to solve its technical problem is:

[0005] A sensor film bonding fixture includes a base with a receiving cavity and a cutting groove for placing a product. An adsorption hole is formed at the bottom of the receiving cavity. A vacuum channel is formed inside the base and communicates with the adsorption hole. An insert is installed in the cutting groove, and the insert has a slot. The hardness of the insert is greater than that of the base. In use, the product is placed in the receiving cavity, abutting against the side wall of the receiving cavity, and the adsorption hole adsorbs and fixes the product.

[0006] Optionally, the depth of the accommodating cavity is equal to the thickness of the product.

[0007] Optionally, a first positioning hole is provided in the accommodating cavity, and a second positioning hole is provided on the product. When the product is placed in the accommodating cavity, the first positioning hole and the second positioning hole are aligned, and positioning pins are inserted into the first positioning hole and the second positioning hole.

[0008] Optionally, the base is an aluminum alloy base, and the insert is a No. 45 steel insert.

[0009] Optionally, a cutting groove is formed on each side of the base of the receiving cavity, and the cutting groove is formed along the horizontal direction of the base.

[0010] Optionally, a sealing element is fixedly installed inside the adsorption hole, and a sealing nozzle is fixedly provided on the sealing element. The sealing nozzle is made of rubber and is used to hold the product.

[0011] Optionally, the vacuum channel is opened horizontally within the base, and the adsorption hole is opened vertically on the base.

[0012] The beneficial effects of this application are as follows: The sensor film-applying fixture of this application has a suitable accommodating cavity machined on the base according to the size of the product. When the product is placed in the accommodating cavity, it is beneficial to fix the product. Interconnected vacuum channels and adsorption holes are opened in the base. The external vacuum device adsorbs and fixes the product through the vacuum channels and adsorption holes, thereby further improving the product's stability. After the product is fixed in the accommodating cavity, film cutting or capping operations can be performed. During film cutting, the blade acts on the groove of the insert to cut the film. The insert not only facilitates the positioning of the film cutting position, reduces film wear, and lowers costs, but also prevents long-term use of the blade from scratching the surface of the base, thereby damaging the smoothness and oxide layer of the base and reducing the base's corrosion resistance. Therefore, the sensor film-applying fixture of this application can simultaneously realize sensor cutting and capping, saving the cost of a set of molds and eliminating the need to replace molds, saving manpower and increasing production efficiency. The use of inserts can extend the service life of the fixture, facilitate film positioning, and save film usage. Attached Figure Description

[0013] Figure 1 This is one of the structural schematic diagrams of the film-applying fixture in this application;

[0014] Figure 2 This is the second schematic diagram of the film-applying fixture in this application;

[0015] Figure 3 This is the third schematic diagram of the film-applying fixture in this application;

[0016] Figure 4 This is a schematic diagram of the structure of the seal in this application;

[0017] Figure 5 This is a schematic diagram of the structure of the insert in this application;

[0018] Figure 6 This is a schematic diagram of the structure of the product in this application;

[0019] In the diagram: 100-base, 110-accommodating cavity, 120-adsorption hole, 130-vacuum channel, 140-cutting groove, 150-first positioning hole, 200-sealant, 300-insert, 310-groove, 400-product, 410-second positioning hole. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments of this application. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of the terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] Example: Figure 1-6As shown, a sensor film-applying fixture includes a base 100. The base 100 has a receiving cavity 110 for placing a product 400 and a cutting groove 140. An adsorption hole 120 is formed at the bottom of the receiving cavity 110. A vacuum channel 130 is formed inside the base 100 and communicates with the adsorption hole 120. An insert 300 is installed in the cutting groove 140. The insert 300 has a slot 310. The hardness of the insert 300 is greater than that of the base 100. In use, the product 400 is placed in the receiving cavity 110, abutting against the side wall of the receiving cavity 110. The adsorption hole 120 adsorbs and fixes the product 400. The size of the receiving cavity 110 is slightly larger than the size of the product 400. Thus, when the product 400 is placed in the receiving cavity 110, its four sides abut against the side wall of the receiving cavity 110, improving the stability of the product during film application.

[0024] Product 400 is a sensor. Current mainstream optical sensors include lenses, which are composed of glass, filters, and lenses. These lenses are prone to scratches from friction. Traditional QFN film-applying fixtures are often unsuitable in size and inaccurate in positioning, leading to misalignment and movement during application, causing friction with the fixture surface and damaging the lens, severely impacting yield. Some sensors use a capping process instead of resin epoxy. However, due to the cap material, friction easily causes scratches and allows debris to enter the sensor, obstructing light-emitting components and causing terminal failure. The current solution involves attaching a soft pad of the same size as the sensor to the QFN film-applying fixture to prevent friction damage to the lens and cap.

[0025] Currently, using this method to attach a gasket to the UV film can prevent damage to the sensor lens. However, repeated application and removal will reduce the film's adhesion, requiring periodic replacement and adding unnecessary steps. Furthermore, changing molds during mass production is inconvenient and affects production efficiency. Secondly, due to variations in each operation, the gasket's placement may deviate, and the gasket lacks positioning and error-proofing functions, which may lead to problems with film application, affecting cutting, and in severe cases, even causing product scrap, which is detrimental to production efficiency and yield.

[0026] The sensor film-applying fixture of this application has a suitable accommodating cavity 110 machined on the base 100 according to the size of the product 400. When the product is placed in the accommodating cavity 110, it is conducive to the fixation of the product. A vacuum channel 130 and an adsorption hole 120 are opened in the base 100 to connect with each other. The external vacuum device adsorbs and fixes the product through the vacuum channel 130 and the adsorption hole 120, thereby further improving the stability of the product. After the product 400 is fixed in the accommodating cavity 110, the film-cutting or capping film-applying operation can be performed. When cutting the film, the blade acts on the groove 310 of the insert 300 to cut the film. The setting of the insert 300 not only facilitates the positioning of the film cutting position, reduces film wear, and reduces costs, but also prevents the surface of the base 100 from being scratched by the blade after long-term use, thereby damaging the smoothness and oxide layer of the base 100 and causing the corrosion resistance of the base 100 to decrease. Therefore, the sensor film-applying fixture of this application can simultaneously perform sensor cutting and film application, as well as cap film application, saving the cost of a single mold and eliminating the need to replace the mold, thus saving manpower and increasing production efficiency. The use of inserts extends the fixture's lifespan, facilitates film positioning, and saves on film usage. The sensor film-applying fixture of this application has the same length, width, thickness, and screw hole positions as existing fixtures, and the mold working platform can be shared, saving the development costs of a new working platform and shortening the development cycle.

[0027] Optionally, the depth of the receiving cavity 110 is equal to the thickness of the product 400. In one possible embodiment, the dimensions of the product 400 are as follows: length 118mm, width 62mm, and thickness 0.2mm. The length and width of the receiving cavity 110 are slightly larger than the product, ensuring that the four sides of the product 400 fit against the inner wall of the receiving cavity 110. The depth of the receiving cavity 110 is the thickness of the product, allowing the product 400 to be directly vacuum-adsorbed and adhered to the receiving cavity 110. The depth of the receiving cavity 110 is consistent with the thickness of the product 400, preventing friction between the film and the product surface caused by the rollers after adsorption. This overcomes the source of friction and avoids scratches on the cap caused by friction.

[0028] like Figure 1-3 and Figure 6As shown, a first positioning hole 150 is formed in the accommodating cavity 110, and a second positioning hole 410 is provided on the product 400. When the product 400 is placed in the accommodating cavity 110, the first positioning hole 150 and the second positioning hole 410 are aligned, and positioning pins are inserted into the first positioning hole 150 and the second positioning hole 410. To ensure the consistency of the subsequent cutting direction with the positioning, the direction must be kept consistent during film application so that the completed cutting program can be solidified for easy cutting operations. Therefore, it is necessary to design foolproof positioning holes, i.e., the first positioning hole 150 and the second positioning hole 410 serve as foolproof positioning holes, allowing the positioning pins to quickly and accurately position the product 400. Since the front cover of the sensor and the back of the substrate are significantly different and have obvious distinguishable features, the positions of the foolproof positioning holes can be shared.

[0029] Optionally, the base 100 is an aluminum alloy base, and the insert 300 is a 45# steel insert. The 45# steel undergoes quenching and blackening treatment.

[0030] like Figure 1-3 As shown, a cutting groove 140 is formed on each side of the base 100 on both sides of the receiving cavity 110. The cutting groove 140 is formed along the horizontal direction of the base 100. A cutting groove 140 is formed on both the upper and lower sides of the product 400. The dimensions of the cutting groove 140 can be designed as 152mm in length, 5mm in width, and 10mm in depth as needed. The dimensions of the insert 300 match the cutting groove 140, so that the insert 300 can be stably installed in the cutting groove 140. A cuboid block with a length of 148mm, a width of 3mm, and a depth of 6mm is cut out in the middle of the insert 300 to form a slot 310. The slot 310 serves as a cutting position for cutting off excess film with a blade after the cover is covered. This facilitates film positioning and saves film usage. It also effectively prevents the blade from accidentally cutting the base 100 and causing damage to the base 100.

[0031] The insert 300 is made of 45 steel that has been quenched and blackened, so that even if the blade cuts into the insert 300, it will not be damaged. The base 100 is made of aluminum alloy, which reduces the weight of the fixture and makes it easier to pick up the fixture during operation.

[0032] Because the hardness of a utility knife blade is much greater than that of aluminum alloy, long-term scraping will leave scratches or grooves on the surface, damaging the smoothness and oxide layer, and reducing the fixture's corrosion resistance. Therefore, this application uses inlaid 45# steel material at the blade cutting area, which is quenched and blackened to extend the fixture's service life. Meanwhile, other areas use aluminum alloy to avoid making the fixture too heavy and to facilitate handling. Since cutting UV film involves tension, the depth of the groove 310 is increased, and the width of the groove 310 is designed to be several times that of the utility knife blade for ease of operation. Applying film to the cover only requires covering the entire substrate; therefore, the groove 310 design reduces film loss and lowers costs.

[0033] like Figure 1-2 As shown, a sealing element 200 is fixedly installed inside the adsorption hole 120. A sealing nozzle, made of rubber, is fixedly mounted on the sealing element 200 and is used to hold the product 400. The sealing element 200 is fixedly installed inside the adsorption hole 120 by screws, and the sealing nozzle is fitted onto the sealing element 200. The sealing nozzle can be used to tightly adhere to the adsorption sensor product, improving the adsorption strength of the product.

[0034] like Figure 1-3 As shown, the vacuum channel 130 is horizontally opened within the base 100, and the adsorption hole 120 is vertically opened on the base 100. Optionally, the base 100 is provided with two accommodating cavities 110, each accommodating cavity 110 is provided with six adsorption holes 120, and multiple vacuum channels 130 are provided within the base 100 communicating with the adsorption holes 120 to ensure that a vacuum is formed at the sealing nozzle.

[0035] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be determined by the appended claims.

Claims

1. A sensor pasting jig, characterized by: The utility model provides a cutting device for product, including base (100), the base (100) is set up and is used for placing product (400) containing cavity (110) and cutting groove (140) on, the bottom of containing cavity (110) is set up adsorption hole (120), the vacuum passage (130) is set up in the base (100), the vacuum passage (130) is communicated with adsorption hole (120), the cutting groove (140) is installed inlay piece (300), the notch (310) is set up on inlay piece (300), the hardness of inlay piece (300) is greater than the hardness of base (100), when using, product (400) is placed in containing cavity (110), product (400) is abutted to the lateral wall of containing cavity (110), and adsorption hole (120) adsorbs and fixes product (400).

2. The sensor pasting jig according to claim 1, wherein: The depth of the containing cavity (110) is equal to the thickness of the product (400).

3. The sensor pasting jig according to claim 1, wherein: The containing cavity (110) is provided with a first positioning hole (150), and the product (400) is provided with a second positioning hole (410). When the product (400) is placed in the containing cavity (110), the first positioning hole (150) is aligned with the second positioning hole (410), and the first positioning hole (150) and the second positioning hole (410) are inserted with a positioning needle.

4. The sensor pasting jig according to claim 1, wherein: The base (100) is an aluminum alloy base, and the inlay piece (300) is a 45 steel inlay piece.

5. The sensor pasting jig according to claim 1, wherein: The base (100) is provided with a cutting groove (140) on each side of the containing cavity (110), and the cutting groove (140) is provided along the horizontal direction of the base (100).

6. The sensor pasting jig according to claim 1, wherein: The adsorption hole (120) is fixedly provided with a sealing element (200), and the sealing element (200) is fixedly provided with a sealing suction nozzle. The sealing suction nozzle is made of rubber, and is used for sucking the product (400).

7. The sensor pasting jig according to claim 1, wherein: The vacuum passage (130) is provided in the base (100) along the horizontal direction, and the adsorption hole (120) is provided on the base (100) along the vertical direction.

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