Special tweezers for volume holographic spraying and laminating process
Through the design of tweezers for the holographic spraying and bonding process, the bottom bracket is added to the bottom bracket to form angle clamping, and the contact surface is reduced by the tilting setting of the bottom bracket, which solves the problems of unstable and contaminated clamping of the existing tweezers, and realizes the realization of Higher clamping stability and process quality.
Patent Information
- Application Number
- CN202421340927.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-12
AI Technical Summary
When existing tweezers clamp the glass substrate in the bulk holographic optical waveguide preparation process, the clamping force is not easy to control, which can easily lead to edge collapse, debris or contamination of the glass substrate, affecting the spray finishing yield.
Design a special tweezers for the holographic spraying and bonding process. A bottom bracket is added to the bottom bracket to form an angled clamping glass substrate. Combined with the clamping effect between the tweezer and the bottom bracket, it improves clamping stability and passes through the bottom bracket. The inclined setting reduces contact surfaces and avoids contamination.
The clamping stability of tweezers on the glass substrate is improved, the requirements for clamping strength at the end of the tweezers are reduced, and defects such as slipping and edge collapse of the glass substrate are avoided, while the risk of pollution is reduced and the process quality is improved.
Smart Images
Figure CN222493834U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of optical device manufacturing, and more specifically relates to a pair of special tweezers for a volume holographic spraying and bonding process. Background Art
[0002] At present, volume holographic waveguide based on holographic light field information recording material is one of the mainstream solutions for augmented reality (AR) optics in the world. It is the basic core component of AR and is widely used in industrial or consumer-grade smart products such as smart glasses, vehicle-mounted and airborne HUD. The volume holographic waveguide includes a glass substrate and a volume holographic grating arranged thereon. The preparation method thereof is as follows: the holographic light field information recording material is sprayed and bonded to form a uniform photosensitive film on the glass substrate, and two coherent light beams are used to illuminate the photosensitive film at the same time to cause double-beam interference, so that the photosensitive film records the interference fringe distribution in the form of the refractive index change distribution thereon, thereby forming a volume holographic grating.
[0003] In the spraying and bonding process of the volume holographic waveguide preparation process, the holographic light field information recording material is transferred to the glass substrate during the loading process. In order to ensure that all materials forming the volume holographic waveguide are clean and uncontaminated, tweezers are needed to clamp and discharge the materials. However, due to the precision requirements in the volume holographic waveguide preparation process, the common tweezers on the market often have the following problems when used: 1. The clamping force of ordinary stainless steel tweezers is not easy to control when in use, which can easily cause defects such as edge collapse and debris on thin glass substrates, affecting the spraying yield; 2. Ordinary plastic tweezers have insufficient clamping force and poor stability when in use, which can easily cause glass substrates to fall off and break; 3. The clamping part of ordinary tweezers is usually in surface contact with the glass substrate, which can easily cause glass substrate contamination, resulting in bubbles during bonding, etc., affecting the product yield. Therefore, it is necessary to design a special tweezers for the volume holographic spray bonding process, which can increase the clamping stability of the tweezers while reducing the adverse effects of the tweezers on the spray bonding process. Utility Model Content
[0004] The utility model aims to overcome at least one defect of the above-mentioned prior art and provides a pair of tweezers specially used in a volume holographic spray bonding process, which increases the clamping stability of the tweezers and reduces the adverse effect of the tweezers on the spray bonding process.
[0005] The technical solution adopted by the utility model is to provide a pair of tweezers specially used for volume holographic spray bonding process, comprising a tweezer body and two tweezer heads connected to the ends of the tweezer body, the tweezer heads are arranged opposite to each other and form an open accommodating space inside together with the tweezer body, a bottom support is provided at the bottom of the tweezer heads, the bottom support is folded toward the accommodating space and forms an obtuse angle with the vertical plane.
[0006] In the present technical solution, by adjusting the tweezers structure and adding a base support at the bottom of the tweezers head, when the special tweezers provided in the present technical solution are used to clamp a glass substrate, the tweezers head and the base support can work together to clamp the glass substrate in the accommodation space inside the tweezers. Specifically, the edge of the glass substrate is placed in the angle formed by the tweezers head and the base support, so that the glass substrate is clamped by the tweezers head and lifted by the base support at the same time, thereby improving the clamping stability of the special tweezers on the glass substrate, and at the same time reducing the requirements for the clamping effect of the tweezers head when the special tweezers are used to stably clamp the glass substrate, avoiding the situation that the glass substrate slips out of the accommodation space inside the tweezers when the clamping force of the tweezers end is small, and avoiding defects such as edge collapse and debris caused by the excessive clamping force applied to the glass substrate by the tweezers end when the tweezers are used to transfer the glass substrate. Furthermore, the bottom support is folded toward the accommodating space and forms an obtuse angle with the vertical plane, that is, the bottom support is slightly tilted downward at the opening of the special tweezers, which makes it easier for the bottom support to clamp and move the glass substrate into the accommodating space, thereby improving the convenience of using the special tweezers. At the same time, the tilted setting of the bottom support also reduces the contact area when the special tweezers clamp the glass substrate, thereby avoiding the tweezers introducing dirt on the glass substrate and affecting the process quality.
[0007] Furthermore, in order to match the thickness and weight of the clamped glass substrate, better play the role of the special tweezers in lifting the glass substrate when transferring and clamping the glass substrate, and further improve the convenience of using the special tweezers, optionally, the folding angle between the bottom support and the vertical plane is 91°-120°; preferably, the folding angle between the bottom support and the vertical plane is 94°.
[0008] Further, the tweezers body includes two symmetrical connecting pieces, the connecting pieces have a connecting end and a free end, the two connecting pieces are fixed by the connecting ends, and the free ends are elastically connected and form a certain angle. In the present technical solution, the tweezers body is composed of two symmetrical connecting pieces, one end of the two connecting pieces is fixed, and the other end forms a certain angle and maintains elastic connection, so that a stable and symmetrical power arm is provided for the special tweezers through the tweezers body, so that the tweezers head and the clamping part can stably and repeatedly realize the functions of clamping and releasing, and ensure the symmetry and stability of the special tweezers when clamping the glass substrate. Preferably, the tweezers body adopts a metal material suitable for springs, so that the tweezers body itself has better elastic deformation ability, so that the tweezers head and the clamping part can stably and repeatedly realize the functions of clamping and releasing by manually squeezing and releasing the free ends of the tweezers body. Further preferably, the free ends of the tweezers body can also be connected by springs.
[0009] Furthermore, in order to set the angle and length between the free ends of the tweezers body to be suitable for gripping and to improve the stability, convenience and efficiency of using special tweezers when transferring and clamping glass substrates, optionally, the connecting end of the tweezers body is set vertically, and the angle between the free end of the tweezers body and the vertical plane is 20°-40°; preferably, the angle between the free end of the tweezers body and the vertical plane is 30°. Optionally, the projection length of the tweezers body in the vertical direction is 48-54mm. Preferably, to improve the stability and efficiency of using special tweezers when transferring and clamping glass substrates, it is 50mm.
[0010] Preferably, the bottom bracket is configured to include a bottom connection end connected to one end of the tweezer head and an empty use end, and the use end is configured to be chamfered, so as to improve the safety of the bottom bracket when in contact with the glass substrate, and further avoid damage to the glass substrate by the special tweezers when clamping and transferring. Furthermore, in order to match the width of the clamped glass substrate, reduce the travel when the special tweezers are used to clamp the glass substrate, improve the stability and efficiency of the special tweezers when transferring and clamping the glass substrate, and improve the convenience of using the special tweezers, the spacing of the bottom brackets is configured to be slightly wider than the width of the glass substrate to be clamped, and optionally, the spacing between the use ends of the two oppositely disposed bottom brackets is configured to be 38-42 mm. Preferably, the spacing between the use ends of the two bottom brackets is 39 mm.
[0011] Under the premise of ensuring the overall clamping stability of the special tweezers, in order to ensure the clamping stability of the tweezer heads and further reduce the clamping force required by the tweezer heads, preferably, the tweezer heads are arranged vertically and the two tweezer heads are kept parallel. Furthermore, in order to further reduce the contact area between the special tweezers and the clamped glass substrate, preferably, the width of the end of the tweezer heads connected to the base is smaller than the width of the end connected to the tweezer body.
[0012] The beneficial effects of the utility model are:
[0013] 1. By adding a bottom support at the bottom of the tweezers head, when the special tweezers are used to clamp the glass substrate, the tweezers head and the bottom support can work together to clamp the glass substrate in the accommodation space inside the tweezers, so that the glass substrate is clamped by the tweezers head and lifted by the bottom support at the same time, thereby improving the clamping stability of the special tweezers on the glass substrate, and also reducing the requirements for the clamping effect of the tweezers head when the special tweezers are used to stably clamp the glass substrate, thereby avoiding the situation that the glass substrate slips out of the accommodation space inside the tweezers when the clamping force of the tweezers end is small, and also avoiding the defects such as edge collapse and debris caused by the excessive clamping force applied to the glass substrate by the tweezers end when the tweezers are used to transfer the glass substrate, thereby avoiding the local force on the glass substrate.
[0014] 2. By folding the bottom support toward the accommodation space and forming an obtuse angle with the vertical plane, the bottom support is slightly tilted downward at the opening of the special tweezers, which makes it easier for the bottom support to clamp and move the glass substrate into the accommodation space, thereby improving the convenience of using the special tweezers. At the same time, the tilted setting of the bottom support also reduces the contact surface when the special tweezers clamp the glass substrate, thereby avoiding the tweezers from introducing dirt on the glass substrate and affecting the process quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a structural schematic diagram of a pair of special tweezers for volume holographic spraying and bonding process.
[0016] Figure 2 It is a front schematic diagram of a pair of special tweezers for volume holographic spraying and bonding process of the utility model.
[0017] Figure 3 It is a side schematic diagram of a pair of special tweezers for volume holographic spraying and bonding process of the utility model.
[0018] Description of reference numerals: tweezer body 100 , connecting end 110 , free end 120 , tweezer head 200 , base 300 , bottom connecting end 310 , use end 320 . DETAILED DESCRIPTION
[0019] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
[0020] Example 1
[0021] like Figure 1-Figure 3 As shown, this embodiment provides a special tweezers for volume holographic spraying and bonding process, including a tweezers body 100 and two tweezers heads 200 connected to the ends of the tweezers body 100, the tweezers heads 200 are arranged opposite to each other and form an open accommodation space together with the tweezers body 100, and a bottom support 300 is arranged at the bottom of the tweezers head 200. When the special tweezers are used to clamp the glass substrate, the tweezers head 200 and the bottom support 300 work together to clamp the glass substrate in the accommodation space inside the tweezers. Specifically, the edge of the glass substrate is placed in the angle formed by the tweezers head 200 and the bottom support 300, so that the glass substrate is clamped by the tweezers head 200 and lifted by the bottom support 300 at the same time, thereby improving the clamping stability of the special tweezers on the glass substrate, not only avoiding the situation that the glass substrate will slip out of the accommodation space inside the tweezers when the clamping force of the tweezers end is small, but also avoiding the defects such as edge collapse and debris caused by the excessive clamping force applied to the glass substrate by the tweezers end when the tweezers are used to transfer the glass substrate.
[0022] Furthermore, the base 300 is arranged at the bottom of the tweezers head 200, folded toward the accommodating space and forming an obtuse angle with the vertical plane, that is, the base 300 is slightly tilted downward at the opening of the special tweezers, so that the base 300 can clamp and move the glass substrate into the accommodating space. At the same time, the tilted setting of the base 300 also reduces the contact area when the special tweezers clamp the glass substrate, avoiding the tweezers from introducing dirt on the glass substrate.
[0023] Optionally, in order to match the thickness and weight of the clamped glass substrate and better play the role of the bottom support 300 in lifting the glass substrate when the special tweezers transfer and clamp the glass substrate, the folding angle between the bottom support 300 and the vertical plane is 91°-120°; preferably, the folding angle between the bottom support 300 and the vertical plane is 94°.
[0024] Furthermore, the tweezers body 100 includes two symmetrical connecting parts, each of which has a connecting end 110 and a free end 120. The two connecting parts are fixed by the connecting end 110, and the free ends 120 are elastically connected to form a certain angle. The tweezers body 100 provides a stable and symmetrical power arm for the special tweezers, so that the tweezers head 200 and the clamping part can stably and repeatedly achieve the functions of clamping and releasing. Preferably, the tweezers body 100 is made of a metal material suitable for a spring, so that the tweezers body 100 itself has a better elastic deformation ability, so that the tweezers head 200 and the clamping part can stably and repeatedly achieve the functions of clamping and releasing by manually squeezing and releasing the free ends 120 of the tweezers body 100. Further preferably, the free ends 120 of the tweezers body 100 can also be connected by a spring.
[0025] Furthermore, in order to set the angle and length between the free ends 120 of the tweezers body 100 to be suitable for gripping and to improve the stability, convenience and efficiency of using the special tweezers when transferring and clamping the glass substrate, optionally, the connection end 110 of the tweezers body 100 is set vertically, and the angle between the free end 120 of the tweezers body 100 and the vertical plane is 20°-40°; preferably, the angle between the free end 120 of the tweezers body 100 and the vertical plane is 30°. Optionally, the projection length of the tweezers body 100 in the vertical direction is 48-54mm. Preferably, to improve the stability and efficiency of using the special tweezers when transferring and clamping the glass substrate, it is 50mm.
[0026] Preferably, the bottom support 300 is configured to include a bottom connection end 310 connected to one end of the tweezer head 200 and an empty use end 320, and the use end 320 is configured to be chamfered to improve the safety of the bottom support 300 when in contact with the glass substrate, and further avoid damage to the glass substrate by the special tweezers when clamping and transferring. Furthermore, in order to match the width of the glass substrate to be clamped and reduce the stroke when the special tweezers are used to clamp the glass substrate, the spacing of the bottom support 300 is configured to be slightly wider than the width of the glass substrate to be clamped. Optionally, the spacing between the use ends 320 of the two oppositely disposed bottom supports 300 is configured to be 38-42 mm. Preferably, the spacing between the use ends 320 of the two bottom supports 300 is 39 mm.
[0027] Under the premise of ensuring the overall clamping stability of the special tweezers, in order to ensure the clamping stability of the tweezers head 200 and further reduce the clamping force required by the tweezers head 200, preferably, the tweezers head 200 is arranged vertically and the two tweezers heads 200 are kept parallel. Furthermore, in order to further reduce the contact area between the special tweezers and the clamped glass substrate, preferably, the width of the end of the tweezers head 200 connected to the base 300 is smaller than the width of the end connected to the tweezers body 100.
[0028] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.
Claims
1. A pair of tweezers specially used for volume holographic spraying and laminating process, comprising a tweezer body and two tweezer heads connected to the ends of the tweezer body, wherein the tweezer heads are arranged opposite to each other and together with the tweezer body form an open accommodation space inside, characterized in that: A base is provided at the bottom of the tweezer head, and the base is folded toward the accommodating space and forms an obtuse angle with a vertical plane.
2. The tweezers specially used for volume holographic spraying and bonding process according to claim 1 are characterized in that: The folding angle between the base and the vertical plane is 91°-120°.
3. The tweezers specially used for volume holographic spraying and bonding process according to claim 1, characterized in that: The tweezers body comprises two symmetrical connecting members, each of which has a connecting end and a free end. The two connecting members are fixed via the connecting ends, and the free ends are elastically connected to form a certain angle.
4. The tweezers specially used for volume holographic spraying and bonding process according to claim 3 are characterized in that: The connecting end of the tweezers body is vertically arranged, and the angle between the free end of the tweezers body and the vertical plane is 20°-40°.
5. The tweezers specially used for volume holographic spraying and bonding process according to claim 3 are characterized in that: The tweezers body is made of a metal material suitable for a spring.
6. The tweezers specially used for volume holographic spraying and bonding process according to claim 3 are characterized in that: The projection length of the tweezers body in the vertical direction is 48-54 mm.
7. The tweezers specially used for volume holographic spraying and bonding process according to any one of claims 1 to 6, characterized in that: The base includes a bottom connection end connected to one end of the tweezer head and an empty use end, and the use end is chamfered.
8. The tweezers specially used for volume holographic spraying and bonding process according to claim 7, characterized in that: The distance between the two oppositely arranged use ends is 38-42 mm.
9. The tweezers specially used for volume holographic spraying and bonding process according to any one of claims 1 to 6, characterized in that: The tweezer heads are arranged vertically, and the two tweezer heads are kept parallel.
10. The tweezers specially used for volume holographic spraying and bonding process according to any one of claims 1 to 6, characterized in that: The width of the end of the tweezer head connected to the base is smaller than the width of the end connected to the tweezer body.