Pressure maintaining tool for balsaming lens production

Abstract

The utility model belongs to the technical field of balsaming lens production, and particularly relates to a pressure maintaining tool for balsaming lens production, which comprises a base, a lens fixing seat arranged on the top of the base, a first limiting structure arranged on the top of a balsaming lens, and second limiting structures arranged on the front side and the rear side of the balsaming lens. Positioning pins are arranged at the positions, located on the two sides of the lens fixing base, of the top of the base, positioning holes matched with the positioning pins are formed in the first limiting structure, first threaded holes are further formed in the positions, located at the two ends of the lens fixing base, of the base, two second threaded holes are formed in the first limiting structure in a penetrating mode, and two bolts are arranged in the two second threaded holes; the two bolts penetrate through the two second threaded holes and are in threaded connection with the two first threaded holes correspondingly. According to the utility model, the pressure plate gives a certain pressure to the balsaming lens, and the compression spring provides a resistance force to the external loading pressure, so that the pressure of the pressure plate to the balsaming lens is in a certain range, and the pressure of the balsaming lens is maintained.

Description

Technical Field

[0001] The utility model belongs to the technical field of cemented lens production, and in particular relates to a pressure-maintaining tool for cemented lens production. Background Art

[0002] An achromatic doublet lens is an achromatic lens formed by bonding a convex lens and a concave lens. Existing bonded lenses are usually made by bonding plastic to plastic lenses or glass to glass lenses. However, in some application scenarios, it is necessary to bond plastic to glass lenses. Due to the large difference in the properties of the two materials, there are great difficulties in bonding plastic lenses to glass lenses.

[0003] When gluing a plastic lens to a glass lens, select a suitable glue, drip a proper amount of glue into the concave lens, wait for the glue to flow out naturally, place the convex lens inside the concave lens, and after the glue solidifies, the concave lens and the convex lens can be glued together to form a glued lens. During the glue curing process, the glued lens needs to be pressurized, so a pressure-maintaining tool is needed to complete the gluing of the glued lens. Utility Model Content

[0004] The utility model aims to provide a pressure-maintaining tool for producing a cemented lens, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0006] A pressure-maintaining tool for producing a laminated lens comprises a base, a lens fixing seat is provided on the top of the base, the lens fixing seat is used to place a laminated lens, a first limiting structure is provided on the top of the laminated lens, and second limiting structures are provided on the front and rear sides of the laminated lens. Positioning pins are provided on the top of the base on both sides of the lens fixing seat, and positioning holes matched with the positioning pins are provided on the first limiting structure. First threaded holes are also provided at both ends of the lens fixing seat on the base, and two second threaded holes are penetrated through the first limiting structure, and the two first threaded holes correspond to the positions of the two second threaded holes respectively. Two bolts are provided in the two second threaded holes, and the two bolts penetrate through the two second threaded holes and are respectively threadedly connected with the two first threaded holes.

[0007] As an improvement, the first limiting structure includes a pressure plate, a groove is provided at the bottom of the pressure plate, the glued lens is located in the groove, and the left and right side walls of the groove are provided with a first limiting portion that contacts the left and right side walls of the glued lens, and the two positioning holes and the two second threaded holes are all arranged on the pressure plate.

[0008] As a further improvement, the top of the groove is provided with an arc-shaped top wall, and the arc-shaped top wall is matched with the top wall of the cemented lens.

[0009] As a further improvement, four second limiting structures are provided, and the four second limiting structures are respectively arranged on the front and rear sides of the glued lens. The second limiting structure includes a fixing part, and the fixing part is fixedly arranged on the pressure plate. The bottom of the fixing part extends downward to form a second limiting part.

[0010] As a further improvement, compression springs are sleeved on the two positioning pins, the bottom of the compression springs abuts against the top surface of the base, and the top of the compression springs abuts against the bottom surface of the pressure plate.

[0011] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] The utility model provides a pressure-maintaining tool for producing a laminated lens. By tightening bolts, a pressure plate is fixed on the top of the laminated lens and a certain pressure is applied to the laminated lens. In the process of tightening the bolts, a compression spring on the positioning pin is compressed, and at the same time, the compression spring provides a resistance force to the external load pressure, so that the pressure applied by the pressure plate to the laminated lens is within a certain range. By selecting a suitable compression spring, a suitable pressure is achieved, thereby achieving the effect of maintaining pressure on the laminated lens.

[0013] The first limiting structure and the second limiting structure limit the glued lens to prevent the convex lens from shifting during the gluing process, which would cause a deviation in the quality of the glued lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of this embodiment;

[0015] Figure 2 is a schematic diagram of the structure of the cemented lens in this embodiment;

[0016] Figure 3 is a schematic diagram of the structure of the lens fixing seat in this embodiment;

[0017] Figure 4 is a front view of the first limiting structure in this embodiment;

[0018] Figure 5 is a structural schematic diagram of the first limiting structure in this embodiment;

[0019] Wherein: 1-base, 2-lens fixing seat, 3-cemented lens, 4-convex lens, 5-concave lens, 6-protrusion, 7-clamping part, 8-cavity, 9-clamping wall, 10-first limiting structure, 11-second limiting structure, 12-positioning pin, 13-positioning hole, 14-second threaded hole, 15-bolt, 16-pressure plate, 17-groove, 18-arc-shaped top wall, 19-first limiting part, 20-fixing part, 21-second limiting part, 22-compression spring. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the specific implementation methods and the accompanying drawings. The accompanying drawings are only for illustrative purposes and are only schematic diagrams, not actual drawings, and should not be construed as limiting the present application. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0021] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] like Figure 1-5 As shown, a pressure-maintaining tool for producing a cemented lens comprises a base 1, a lens fixing seat 2 is provided on the top of the base 1, the lens fixing seat 2 is used to place a cemented lens 3, the cemented lens 3 comprises a convex lens 4 and a concave lens 5, the bottom of the concave lens 5 is provided with a protrusion 6 extending outward, the lens fixing seat 2 comprises a U-shaped clamping portion 7 fixed to the top surface of the base 1, the middle part of the clamping portion 7 forms a cavity 8 for accommodating the concave lens 5, the tops of the front and rear side walls of the clamping portion 7 are provided with clamping walls 9 extending toward the cavity 8, and a receiving groove for accommodating the protrusion 6 is formed between the clamping wall 9 and the top wall of the base 1. When the cemented lens 3 is glued, the concave lens 5 is first inserted into the cavity 8 from the U-shaped opening of the clamping portion 7, and the protrusion 6 is located in the receiving groove to fix the concave lens 5.

[0023] In this embodiment, a first limiting structure 10 is provided on the top of the glued lens 3, and a second limiting structure 11 is provided on the front and rear sides of the glued lens 3. The first limiting structure 10 is used to limit the left and right directions and the up and down directions of the glued lens 3, and the second limiting structure 11 is used to limit the front and back directions of the glued lens 3. The top of the base 1 is located on both sides of the lens fixing seat 2 and a positioning pin 12 is provided. The first limiting structure 10 is provided with a positioning hole 13 matched with the positioning pin 12. The positioning pin 12 passes through the positioning hole 13 to position the first limiting structure 10. The base 1 is also provided with a first threaded hole at both ends of the lens fixing seat 2. Two second threaded holes 14 are penetrated through the first limiting structure 10. The two first threaded holes correspond to the positions of the two second threaded holes 14 respectively. Two bolts 15 are provided in the two second threaded holes 14. The two bolts 15 pass through the two second threaded holes 14 and are threadedly connected with the two first threaded holes respectively.

[0024] In this embodiment, the first limiting structure 10 includes a pressure plate 16, a groove 17 is provided at the bottom of the pressure plate 16, and the glued lens 3 is located in the groove 17. Specifically, an arc-shaped top wall 18 is provided at the top of the groove 17, and the top wall of the convex lens 4 is abutted against the arc-shaped top wall 18 of the groove 17. The left and right side walls of the groove 17 are provided with a first limiting portion 19 that contacts the left and right side walls of the glued lens 3. The first limiting portion 19 is used to limit the left and right directions of the glued lens 3, and the arc-shaped top wall of the groove 17 is used to limit the up and down directions of the glued lens 3.

[0025] Preferably, the two positioning holes 13 and the two second threaded holes 14 are both provided on the pressing plate 16 .

[0026] In this embodiment, four second limiting structures 11 are provided, and the four second limiting structures 11 are respectively arranged on the front and rear sides of the glued lens 3. The second limiting structure 11 includes a fixing part 20, and the fixing part 20 is fixedly arranged on the front and rear sides of the pressure plate 16. The bottom of the fixing part 20 extends downward to form a second limiting part 21. The second limiting part 21 contacts the front and rear side walls of the glued lens 3 to limit the front and rear directions of the glued lens 3.

[0027] In this embodiment, compression springs 22 are sleeved on the two positioning pins 12, the bottom of the compression spring 22 abuts against the top surface of the base 1, and the top of the compression spring 22 abuts against the bottom surface of the pressure plate 16. Different compression springs 22 are used according to the required pressure.

[0028] When the utility model is used, after the concave lens 5 is fixed on the lens fixing seat 2, optical grade glue is applied to the top surface of the concave lens 5, and then the convex lens 4 is placed on the top of the concave lens 5. During the curing process of the glue, the glued lens 3 needs to be pressure-maintained. During the pressure-maintaining process, the positioning hole 13 on the first limiting structure 10 is aligned with the positioning pin 12, so that the positioning pin 12 passes through the positioning hole 13, and the arc-shaped top wall 18 of the groove 17 is against the top wall of the convex lens 4. At the same time, the second limiting structure 11 is located at the front and rear sides of the glued lens 3, and then the two bolts are fixed. 15 passes through the two second threaded holes 14 respectively and is threadedly connected to the first threaded hole, the bolt 15 is tightened, the pressure plate 16 is fixed on the top of the cemented lens 3, and a certain pressure is applied to the cemented lens 3. In the process of tightening the bolt 15, the compression spring 22 on the positioning pin 12 will be compressed, and the compression spring 22 provides a resistance force to the external load pressure, so that the pressure applied to the cemented lens 3 by the pressure plate 16 is within a certain range. By selecting a suitable compression spring 22, a suitable pressure is achieved, so that the cemented lens 3 can be kept under pressure.

[0029] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A pressure-maintaining tool for producing a cemented lens, comprising a base, characterized in that: A lens fixing seat is provided on the top of the base, and the lens fixing seat is used to place a glued lens. A first limiting structure is provided on the top of the glued lens, and second limiting structures are provided on the front and rear sides of the glued lens. Positioning pins are provided on the top of the base on both sides of the lens fixing seat, and positioning holes matched with the positioning pins are provided on the first limiting structure. First threaded holes are also provided on both ends of the lens fixing seat on the base, and two second threaded holes are penetrated through the first limiting structure. The two first threaded holes correspond to the positions of the two second threaded holes respectively, and two bolts are provided in the two second threaded holes. The two bolts penetrate through the two second threaded holes and are threadedly connected with the two first threaded holes respectively.

2. The pressure-maintaining tool for producing a cemented lens according to claim 1, characterized in that: The first limiting structure includes a pressure plate, a groove is provided at the bottom of the pressure plate, the glued lens is located in the groove, and the left and right side walls of the groove are provided with first limiting parts that contact the left and right side walls of the glued lens. The two positioning holes and the two second threaded holes are all arranged on the pressure plate.

3. The pressure-maintaining tool for producing a cemented lens according to claim 2, characterized in that: The top of the groove is provided with an arc-shaped top wall, and the arc-shaped top wall is matched with the top wall of the cemented lens.

4. The pressure-maintaining tool for producing a cemented lens according to claim 2, characterized in that: There are four second limiting structures, which are respectively arranged on the front and rear sides of the glued lens. The second limiting structure includes a fixing part, which is fixed on the pressure plate, and the bottom of the fixing part extends downward to form a second limiting part.

5. The pressure-maintaining tool for producing a cemented lens according to any one of claims 2 to 4, characterized in that: Compression springs are sleeved on the two positioning pins, the bottom of the compression springs abuts against the top surface of the base, and the top of the compression springs abuts against the bottom surface of the pressure plate.

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