A multi-piece clamping optical lens grinding jig

Abstract

The present invention belongs to the technical field of optical equipment processing, and specifically is a multi-piece clamping optical lens grinding jig, comprising a processing end and a connecting end connected to each other, wherein the processing end is provided with a receiving groove; further comprising a tray clamp, wherein the tray clamp is installed in the receiving groove, wherein the tray clamp is provided with a placement cavity, wherein the lens to be processed is installed in the placement cavity, wherein an elastic layer is installed on the inner wall of the placement cavity; wherein a pressure cavity is provided in the tray clamp, wherein a gap cavity is provided in the elastic layer, wherein a steel needle is installed in the receiving groove, wherein the upper end of the steel needle is inserted into the pressure cavity; wherein an air inlet is provided in the connecting end; wherein the gap cavity, the steel needle, the pressure cavity and the air inlet are interconnected. The present invention has a simple structure, and can stably and firmly clamp a plurality of optical lenses for grinding processing, and avoids contamination and damage to the lenses in traditional processing methods, and facilitates the clamping and disassembly of the lenses, thereby improving the efficiency and effect of the lens grinding processing.

Description

Technical Field

[0001] The invention belongs to the technical field of optical equipment processing, in particular to a multi-piece clamping optical lens grinding tool. Background Art

[0002] In our conventional classical polishing process, some glasses that need to be processed into disks are mainly put on the disk by bonding asphalt glue balls on the non-polished surface, and then using cast iron adhesive tools to bond them under heating and softening conditions to ensure that the optical lens is firmly fixed.

[0003] However, the use of asphalt colloids to fix the lens is prone to the following disadvantages:

[0004] 1. Serious environmental pollution;

[0005] 2. Glass with a poor thermal expansion coefficient is particularly prone to cracking during the heating and cooling process. At the same time, when the lens is mounted or removed after processing, it is necessary to wait for the asphalt glue to melt and solidify, which is time-consuming and labor-intensive, affecting the efficiency of lens grinding;

[0006] 3. Asphalt bonding has many processes, and glass is easily scratched during the multi-process processing;

[0007] 4. The center thickness of the lens cannot be guaranteed, the process is complicated, the operation is inconvenient, and a lot of auxiliary materials are consumed. Summary of the invention

[0008] In order to make up for the shortcomings of the prior art, stably and firmly clamp multiple optical lenses for grinding processing, avoid contamination and damage to the lenses in traditional processing methods, facilitate the clamping and disassembly of the lenses, and improve the efficiency and effect of lens grinding processing, the present invention proposes a multi-lens clamping optical lens grinding tool.

[0009] The technical solution adopted by the present invention to solve the technical problem is as follows: the optical lens grinding jig for clamping multiple lenses of the present invention comprises a processing end, the upper part of the processing end is a spherical surface, the lower part of the processing end is provided with a connecting end, and the spherical surface of the processing end is provided with a receiving groove, and the receiving groove is used to place the lens to be processed;

[0010] It also includes a tray clamp, the tray clamp is installed in the containing groove, the tray clamp is provided with a placement cavity, the lens to be processed is installed in the placement cavity, and an elastic layer is installed on the inner wall of the placement cavity;

[0011] A pressure chamber is provided in the tray clamp, and a plurality of pressure chambers are arranged along the length direction of the tray clamp, and the pressure chambers are interconnected through longitudinal holes. A gap chamber is provided in the elastic layer, and the gap chamber and the pressure chamber are interconnected through connecting holes. An insertion hole connected to the pressure chamber is provided on the tray clamp, and a steel needle is installed in the accommodating groove, and the upper end of the steel needle is inserted into the pressure chamber from the insertion hole.

[0012] A connecting cavity is provided in the processing end, a conveying hole is provided in the steel needle, the conveying hole and the connecting cavity are connected to each other via an air outlet, an air inlet is provided in the connecting end, and the air inlet is connected to the connecting cavity.

[0013] Preferably, a silicone membrane is installed on the bottom surface of the placement cavity, and a surface of the silicone membrane is provided with raised points distributed in an array, and the silicone membrane is made of a viscous silicone material.

[0014] Preferably, an elastic bag is installed on the steel needle, and the elastic bag is located in the pressure chamber. After the elastic bag expands, it fills the space in the pressure chamber.

[0015] Preferably, the edge of one end of the insertion hole located in the pressure chamber is chamfered to obtain a conical slope, and the lower end of the elastic bag is located below the lower end of the conical slope.

[0016] Preferably, the elastic layer includes an extrusion portion and a driving portion, the extrusion portion is located above the driving portion, the extrusion portion is fixedly mounted on the side wall of the placement cavity, and there is relative movement between the driving portion and the side wall of the placement cavity;

[0017] There is a gap between the lower end of the driving part and the bottom surface of the placement cavity.

[0018] Preferably, the side wall thickness of the extrusion portion is greater than the side wall thickness of the driving portion.

[0019] Preferably, a limiting groove is provided on the side wall of the placement cavity, and a plurality of groups of the limiting grooves are arranged from top to bottom, and the limiting grooves are located in the area where the extrusion part is located.

[0020] Preferably, the side of the driving part facing the lens to be processed is frosted, and the surface of the driving part and the contact area on the side wall of the placement cavity are coated with a polytetrafluoroethylene film.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The optical lens grinding jig for clamping multiple lenses described in the present invention, by providing a receiving groove, a tray clamp, an elastic layer, a silicone membrane, a steel needle, an elastic bag and a pressure chamber, allows the lens to be processed to be placed in the tray clamp, and multiple tray clamps are placed in the receiving groove at the same time for grinding processing, thereby ensuring the position stability and accuracy of the lens to be processed, thereby avoiding the use of traditional asphalt colloids to fix the lens to be processed, thereby avoiding contamination and damage to the lens to be processed, and facilitating the clamping and disassembly of the lens to be processed, thereby improving the grinding processing efficiency.

[0023] 2. The optical lens grinding jig for clamping multiple lenses described in the present invention, by providing an insertion hole, a conical slope, an elastic bag, a driving part and an extrusion part, enables the lens to be processed to be pressed against the bottom surface of the placement cavity under the action of the driving part, and the tray clamp is pressed against the bottom surface of the accommodating groove under the extrusion of the elastic bag and the conical slope, further ensuring the good position stability and accuracy of the lens to be processed during the grinding process, avoiding the situation where the tray clamp or the lens to be processed is skewed or slipped, and ensuring a good grinding effect of the lens to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a front view of the grinding tool of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the processing end of the grinding tool of the present invention;

[0027] Figure 3 is a cross-sectional view of the grinding tool of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the tray clamp in the grinding tool of the present invention;

[0029] Figure 5 is a cross-sectional view of a tray clamp in the grinding jig of the present invention from a first viewing angle;

[0030] Figure 6 is a cross-sectional view of the tray clamp in the grinding tool of the present invention from a second viewing angle;

[0031] Figure 7 yes Figure 5 A partial enlarged view of the middle part;

[0032] Figure 8 yes Figure 5 A partial enlarged view of point B in the middle;

[0033] Fig. 9 yes Figure 5 A partial enlarged view of point C in the middle;

[0034] In the figure: connecting end 1, processing end 2, accommodating groove 21, connecting cavity 22, air outlet 221, air inlet 222, steel needle 23, delivery hole 231, elastic bag 232, tray clamp 3, placement cavity 31, elastic layer 32, limiting groove 321, extrusion part 322, driving part 323, gap cavity 324, silicone membrane 33, protruding point 331, pressure cavity 34, conical slope 341, longitudinal hole 342, connecting hole 343, insertion hole 344, lens 4 to be processed. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figures 1 to 9 As shown, the optical lens grinding jig for clamping multiple lenses of the present invention comprises a processing end 2, the upper part of the processing end 2 is a spherical surface, the lower part of the processing end 2 is provided with a connecting end 1, and the spherical surface of the processing end 2 is provided with a receiving groove 21, and the receiving groove 21 is used to place the lens 4 to be processed;

[0037] It also includes a tray clamp 3, the tray clamp 3 is installed in the containing groove 21, the tray clamp 3 is provided with a placement cavity 31, the lens to be processed 4 is installed in the placement cavity 31, and an elastic layer 32 is installed on the inner wall of the placement cavity 31;

[0038] A pressure chamber 34 is provided in the tray clamp 3, and a plurality of pressure chambers 34 are arranged along the length direction of the tray clamp 3. The pressure chambers 34 are interconnected through longitudinal holes 342. A gap chamber 324 is provided in the elastic layer 32, and the gap chamber 324 and the pressure chamber 34 are interconnected through a connecting hole 343. An insertion hole 344 connected to the pressure chamber 34 is provided on the tray clamp 3. A steel needle 23 is installed in the accommodating groove 21, and the upper end of the steel needle 23 is inserted into the pressure chamber 34 from the insertion hole 344.

[0039] A connecting cavity 22 is provided in the processing end 2, a delivery hole 231 is provided in the steel needle 23, the delivery hole 231 and the connecting cavity 22 are connected to each other through an air outlet 221, and an air inlet 222 is provided in the connecting end 1, and the air inlet 222 is connected to the connecting cavity 22;

[0040] The lens 4 to be processed is placed in the tray clamp 3, and then, a plurality of tray clamps 3 are sequentially placed in the receiving groove 21 on the processing end 2, and then the grinding tool is mounted on the grinding machine table through the connecting end 1, and the grinding process of the lens 4 to be processed is started. After the grinding is completed, the tray clamp 3 is sequentially removed from the processing end 2, and the lens 4 to be processed is removed from the tray clamp 3, and the lens 4 to be processed is processed in the subsequent process;

[0041] At the same time, before the grinding process begins, the external air source is controlled to fill the gap cavity 324 in the elastic layer 32 with gas through the air inlet 222, the connecting cavity 22, the air outlet 221, the delivery hole 231 and the connecting hole 343, so that the elastic layer 32 expands, and the lens 4 to be processed in the placement cavity 31 is squeezed and fixed, so as to avoid the contamination of the lens 4 to be processed by the traditional asphalt glue group fixation, and to avoid the time-consuming and labor-intensive process of clamping and removing the lens 4 to be processed when the lens 4 to be processed is fixed by the asphalt glue group, which affects the grinding process efficiency and grinding process effect;

[0042] At the same time, since the elastic layer 32 is installed on the side wall of the placement cavity 31, when the lens 4 to be processed is placed in the placement cavity 31, the staff only needs to align the lens 4 to be processed with the placement cavity 31 and press it into the placement cavity 31. Then, the lens 4 to be processed will be simply fixed under the elastic effect of the elastic layer 32, so as to avoid the lens 4 to be processed on the tray clamp 3 from sliding or falling off during the installation of the tray clamp 3 into the accommodating groove 21, thereby simplifying the clamping operation steps of the lens 4 to be processed and improving the operation efficiency.

[0043] At the same time, after the gas is introduced from the external gas source, the pressure in the gap cavity 324 increases, thereby driving the elastic layer 32 to expand, thereby uniformly clamping and fixing the side of the lens 4 to be processed in the placement cavity 31, further ensuring the stability and position accuracy of the lens 4 to be processed in the placement cavity 31, and preventing the lens 4 to be processed from falling off from the placement cavity 31, or shaking or displacement during the grinding process, which affects the grinding effect of the lens 4 to be processed;

[0044] At the same time, since steel needles 23 are installed in the accommodating groove 21 and multiple groups of steel needles 23 are provided, when the tray clamp 3 is installed in the accommodating groove 21, the position of the tray clamp 3 is positioned and fixed by the steel needles 23 to prevent the tray clamp 3 from being skewed, shaken or displaced, resulting in relatively large errors in the grinding process, affecting the subsequent grinding effect of the lens 4 to be processed.

[0045] As an embodiment of the present invention, a silicone film 33 is installed on the bottom surface of the placement cavity 31, and an array of protrusions 331 are arranged on the surface of the silicone film 33. The silicone film 33 is made of a viscous silicone material;

[0046] When the lens 4 to be processed is placed in the placement cavity 31 by the staff, the silicone film 33 located on the bottom surface of the placement cavity 31 cushions the lens 4 to be processed, and cushions it during the grinding process, and cooperates with the elastic layer 32 on the inner wall of the placement cavity 31 to fully protect the lens 4 to be processed, so as to prevent the lens 4 to be processed from being damaged during the clamping and grinding process, thereby affecting the quality of the lens 4 to be processed;

[0047] At the same time, since the silicone film 33 is sticky, when the lens 4 to be processed is completely placed in the placement cavity 31 by the staff, the bottom surface of the lens 4 to be processed will contact the silicone film 33 and adhere to the silicone film 33 under the stickiness of the silicone film 33, thereby cooperating with the elastic layer 32 to limit the lens 4 to be processed, the stability of the lens 4 to be processed during the clamping process can be further ensured, and the lens 4 to be processed can be prevented from moving or falling, so that the staff can place the tray clamp 3 carrying the lens 4 to be processed into the accommodating groove 21;

[0048] At the same time, since the silicone film 33 is provided with an array of protrusions 331, there will be a gap between the bottom surface of the lens 4 to be processed and the surface of the silicone film 33, which prevents the bottom surface of the lens 4 to be processed from completely fitting and adhering to the silicone film 33, resulting in the adsorption and adhesion between the lens 4 to be processed and the silicone film 33 being too tight. After the grinding process is completed, it is inconvenient and difficult for the staff to remove the lens 4 to be processed from the placement cavity 31 for subsequent processing.

[0049] As an embodiment of the present invention, an elastic bag 232 is installed on the steel needle 23, and the elastic bag 232 is located in the pressure chamber 34. After the elastic bag 232 expands, it fills the space in the pressure chamber 34;

[0050] When air is delivered from an external air source, the delivered air will enter the elastic bag 232 from the delivery hole 231 on the steel needle 23, causing the elastic bag 232 to expand. In this case, the elastic bag 232 will fill the space in the pressure chamber 34, increasing the pressure in the pressure chamber 34 so as to squeeze the air in the pressure chamber 34 into the gap chamber 324, causing the elastic layer 32 to expand, thereby clamping and fixing the lens 4 to be processed.

[0051] At the same time, when the elastic capsule 232 expands, the lower end of the elastic capsule 232 will contact and fill the gap between the steel needle 23 and the insertion hole 344, so that the pressure chamber 34 remains relatively closed, thereby ensuring that the pressure in the pressure chamber 34 can be smoothly increased and the air can be pressed into the gap chamber 324. After the elastic capsule 232 completely fills the pressure chamber 34, it will stop supplying air to the gap chamber 324, so as to avoid excessive pressure in the gap chamber 324, so that the elastic layer 32 exerts excessive pressure on the lens 4 to be processed, resulting in damage to the lens 4 to be processed.

[0052] At the same time, the pressure chamber 34 is inflated indirectly by the expansion of the elastic bag 232, so as to avoid the possibility that the air fed into the pressure chamber 34 directly from the external air source will leak from the gap between the steel needle 23 and the insertion hole 344, and the leaked air will enter between the tray clamp 3 and the receiving groove 21, which will easily affect the stable clamping and fixation of the tray clamp 3 in the receiving groove 21, and affect the grinding effect of the lens 4 to be processed;

[0053] At the same time, since the elastic bag 232 will close the gap between the steel needle 23 and the insertion hole 344 after expansion, the matching tolerance between the steel needle 23 and the insertion hole 344 is allowed to be relatively large, so as to avoid the steel needle 23 and the insertion hole 344 being tightly matched in order to ensure the sealing effect between the steel needle 23 and the insertion hole 344, which increases the difficulty of placing the tray clamp 3 in the accommodating groove 21 and affects the clamping efficiency of the lens 4 to be processed;

[0054] At the same time, after the elastic bag 232 expands, the elastic bag 232 will get stuck in the insertion hole 344, that is, it will have a locking effect on the steel needle 23 and the tray clamp 3, further ensuring that the tray clamp 3 stays stably in the receiving groove 21, preventing unexpected situations from occurring during the processing, causing the tray clamp 3 to slip or fall off from the receiving groove 21, causing production accidents or affecting the grinding effect of the lens 4 to be processed.

[0055] As an embodiment of the present invention, the edge of one end of the insertion hole 344 located in the pressure chamber is chamfered to obtain a conical inclined surface 341, and the lower end of the elastic bag 232 is located below the lower end of the conical inclined surface 341;

[0056] Since the lower end of the elastic bag 232 is located below the lower end of the conical inclined surface 341, when the elastic bag 232 expands, the gap between the steel needle 23 and the insertion hole 344 is first closed to ensure that the pressure chamber 34 is relatively sealed from the outside, so that after the elastic bag 232 expands, the pressure in the pressure chamber 34 increases, and then the air enters the gap cavity 324 to cause the elastic layer 32 to expand;

[0057] At the same time, since the upper end of the insertion hole 344 is provided with a conical inclined surface 341, after the elastic capsule 232 expands, one of the components of the force of the elastic capsule 232 acting on the conical inclined surface 341 will produce a pushing effect on the tray clamp 3 directed to the bottom surface of the receiving groove 21, so that the bottom surface of the tray clamp 3 and the bottom surface of the receiving groove 21 are closely attached to each other, so as to avoid the situation that the staff does not place the tray clamp 3 in place when placing it, so that there is a gap between the two, or the tray clamp 3 becomes loose or moves during the grinding process, thereby ensuring that the grinding process of the lens 4 to be processed is high in precision and the processing effect is good;

[0058] At the same time, since a conical slope 341 is provided at the upper end of the insertion hole 344, when the elastic bag 232 expands, the elastic bag 232 will not directly contact the relatively sharp edge of the upper end of the insertion hole 344, thereby avoiding the elastic bag 232 from being damaged by the edge of the upper end of the insertion hole 344 and extending the service life of the elastic bag 232.

[0059] As an embodiment of the present invention, the elastic layer 32 includes an extrusion portion 322 and a driving portion 323, the extrusion portion 322 is located above the driving portion 323, the extrusion portion 322 is fixedly mounted on the side wall of the placement cavity 31, and there is relative movement between the driving portion 323 and the side wall of the placement cavity 31;

[0060] There is a gap between the lower end of the driving portion 323 and the bottom surface of the placement cavity 31;

[0061] When air is filled into the gap cavity 324 and the elastic layer 32 expands, the extrusion portion 322 will directly squeeze the side of the lens 4 to be processed, clamp and fix the lens 4 to be processed, ensure that the position of the lens 4 to be processed is stable and accurate, and improve the effect and quality of the grinding process of the lens 4 to be processed. At the same time, due to the relative movement between the driving portion 323 and the side wall of the placement cavity 31 and the gap between the lower end of the driving portion 323 and the bottom surface of the placement cavity 31, when the driving portion 323 expands, the driving portion 323 as a whole will have a tendency to extend toward the bottom surface of the placement cavity 31. In this case, the driving portion 323 will have a tendency to drive the lens 4 to be processed to move toward the bottom surface of the placement cavity 31, so that the lens 4 to be processed is tightly attached to the bottom surface of the placement cavity 31, avoiding the situation where the staff does not place the lens 4 to be processed in place or the lens 4 to be processed is placed at an angle, thereby ensuring the stability and accuracy of the position of the lens 4 to be processed and improving the effect of the grinding process of the lens 4 to be processed.

[0062] As an embodiment of the present invention, the side wall thickness of the extrusion portion 322 is greater than the side wall thickness of the driving portion 323;

[0063] Since the side wall thickness of the extrusion portion 322 is relatively large, when air is filled into the gap cavity 324 to expand the elastic layer 32, the driving portion 323 will expand first relative to the extrusion portion 322, and then the driving portion 323 will first drive the lens 4 to be processed to be close to the bottom surface of the placement cavity 31, ensuring that the position of the lens 4 to be processed is stable and accurate, thereby preventing the extrusion portion 322 from expanding first. After the lens 4 to be processed is clamped and fixed, the position of the lens 4 to be processed is locked. After the driving portion 323 expands, the elongation force of the driving portion 323 toward the bottom surface of the placement cavity 31 cannot drive the lens 4 to be processed to move, so that the position defect of the lens 4 to be processed cannot be corrected in time, affecting the grinding effect of the lens 4 to be processed.

[0064] As an embodiment of the present invention, a limiting groove 321 is provided on the side wall of the placement cavity 31, and multiple groups of the limiting grooves 321 are arranged from top to bottom, and the limiting grooves 321 are located in the area where the extrusion part 322 is located;

[0065] By opening a limiting groove 321 on the side wall in the placement cavity 31, and embedding the extrusion portion 322 in the elastic layer 32 or inserting the protrusion set on the extrusion portion 322 into the limiting groove 321, the position of the elastic layer 32 on the inner side wall of the placement groove can be further positioned and fixed, so as to prevent the elastic layer 32 from falling off the side wall in the placement cavity 31, or when the driving portion 323 drives the lens 4 to be processed to move downward, the elastic layer 32 slips under the action of the reaction force, thereby avoiding affecting the position stability and accuracy of the lens 4 to be processed, and ensuring that the grinding effect of the lens 4 to be processed is good.

[0066] As an embodiment of the present invention, the side of the driving portion 323 facing the lens 4 to be processed is frosted, and the surface of the driving portion 323 and the contact area on the side wall of the placement cavity 31 are coated with a polytetrafluoroethylene film;

[0067] By frosting the surface of the driving part 323, the friction between the driving part 323 and the lens 4 to be processed is increased, so that the driving part 323 can more easily move the lens 4 to be processed downward or increase the tendency of downward movement. Similarly, a polytetrafluoroethylene film is plated on the extrusion part 322, the driving part 323 and the side wall of the placement cavity 31 to reduce the friction between the driving part 323 and the inner wall of the placement cavity 31, thereby facilitating the driving part 323 to expand and extend toward the bottom surface of the placement cavity 31, so as to facilitate the driving part 323 to drive the lens 4 to be processed close to the bottom surface of the placement cavity 31, thereby ensuring the grinding processing effect of the lens 4 to be processed.

[0068] The specific workflow is as follows:

[0069] The lens 4 to be processed is placed in the tray clamp 3, and then, a plurality of tray clamps 3 are sequentially placed in the receiving groove 21 on the processing end 2, and then the grinding tool is mounted on the grinding machine table through the connecting end 1, and the grinding process of the lens 4 to be processed is started. After the grinding is completed, the tray clamp 3 is sequentially removed from the processing end 2, and the lens 4 to be processed is removed from the tray clamp 3, and the lens 4 to be processed is processed in the subsequent process;

[0070] At the same time, before the grinding process begins, the external air source is controlled to fill the gap cavity 324 in the elastic layer 32 with air through the air inlet 222, the connecting cavity 22, the air outlet 221, the delivery hole 231 and the connecting hole 343, so that the elastic layer 32 expands and squeezes and fixes the lens 4 to be processed in the placement cavity 31;

[0071] At the same time, since the elastic layer 32 is installed on the side wall of the placement cavity 31, when the lens 4 to be processed is placed in the placement cavity 31, the staff only needs to align the lens 4 to be processed with the placement cavity 31 and press it into the placement cavity 31, and then the lens 4 to be processed will be simply fixed under the elastic effect of the elastic layer 32;

[0072] At the same time, after the gas is introduced from the external gas source, the pressure in the gap cavity 324 increases, thereby driving the elastic layer 32 to expand, and evenly clamping and fixing the side of the lens 4 to be processed in the placement cavity 31;

[0073] At the same time, since the steel needles 23 are installed in the receiving groove 21, and the steel needles 23 are provided in multiple groups, when the tray clamp 3 is installed in the receiving groove 21, the position of the tray clamp 3 is positioned and fixed by the steel needles 23;

[0074] The silicone film 33 on the bottom surface of the placement cavity 31 provides buffering for the process of placing the lens 4 to be processed into the placement cavity 31, and provides buffering and protection during the grinding process;

[0075] At the same time, when the lens 4 to be processed is completely placed in the placement cavity 31 by the staff, the bottom surface of the lens 4 to be processed will contact the silicone film 33 and adhere to the silicone film 33 due to the viscosity of the silicone film 33;

[0076] At the same time, since the protrusions 331 are arranged in an array on the silicone film 33, there is a gap between the bottom surface of the lens 4 to be processed and the surface of the silicone film 33, so as to prevent the bottom surface of the lens 4 to be processed from being completely attached to and adhering to the silicone film 33. After the grinding process is completed, it is inconvenient and difficult for the staff to remove the lens 4 to be processed from the placement cavity 31.

[0077] When air is delivered from an external air source, the delivered air will enter the elastic bag 232 from the delivery hole 231 on the steel needle 23, causing the elastic bag 232 to expand. In this case, the elastic bag 232 will fill the space in the pressure chamber 34, increasing the pressure in the pressure chamber 34 so as to squeeze the air in the pressure chamber 34 into the gap chamber 324.

[0078] At the same time, when the elastic capsule 232 expands, the lower end of the elastic capsule 232 contacts and fills the gap between the steel needle 23 and the insertion hole 344, so that the pressure chamber 34 remains relatively closed, and after the elastic capsule 232 completely fills the pressure chamber 34, it stops supplying air to the gap chamber 324;

[0079] At the same time, when air is directly supplied from an external air source into the pressure chamber 34, the supplied air may leak from the gap between the steel needle 23 and the insertion hole 344, and the leaked air may enter between the tray clamp 3 and the receiving groove 21;

[0080] At the same time, since the elastic bag 232 will close the gap between the steel needle 23 and the insertion hole 344 after expansion, the matching tolerance between the steel needle 23 and the insertion hole 344 is allowed to be relatively large, reducing the difficulty of placing the tray clamp 3 in the receiving groove 21;

[0081] At the same time, after the elastic bag 232 expands, the elastic bag 232 will be stuck in the insertion hole 344, that is, the steel needle 23 and the tray clamp 3 have a locking effect;

[0082] Since the lower end of the elastic bag 232 is located below the lower end of the conical inclined surface 341, when the elastic bag 232 expands, the gap between the steel needle 23 and the insertion hole 344 is first closed to ensure that the pressure chamber 34 is relatively sealed from the outside.

[0083] At the same time, since the upper end of the insertion hole 344 is provided with a conical inclined surface 341, after the elastic bag 232 expands, one of the components of the force of the elastic bag 232 acting on the conical inclined surface 341 will produce a pushing effect on the tray clamp 3 directed toward the bottom surface of the receiving groove 21, so that the bottom surface of the tray clamp 3 and the bottom surface of the receiving groove 21 are closely attached to each other;

[0084] At the same time, since the upper end of the insertion hole 344 is provided with a conical inclined surface 341, when the elastic bag 232 expands, the elastic bag 232 will not directly contact the relatively sharp edge of the upper end of the insertion hole 344, thereby preventing the elastic bag 232 from being damaged by the edge of the upper end of the insertion hole 344;

[0085] When air is filled into the gap cavity 324 and the elastic layer 32 expands, the squeezing portion 322 will directly squeeze and clamp the side of the lens 4 to be processed. At the same time, since there is relative movement between the driving portion 323 and the side wall of the placement cavity 31 and there is a gap between the lower end of the driving portion 323 and the bottom surface of the placement cavity 31, when the driving portion 323 expands, the driving portion 323 as a whole will tend to stretch toward the bottom surface of the placement cavity 31. In this case, the driving portion 323 will tend to drive the lens 4 to be processed to move toward the bottom surface of the placement cavity 31, so that the lens 4 to be processed is closely attached to the bottom surface of the placement cavity 31.

[0086] When the gap cavity 324 is filled with air to expand the elastic layer 32, the driving portion 323 will expand first relative to the squeezing portion 322, so that the driving portion 323 first drives the lens 4 to be processed to be closely attached to the bottom surface of the placement cavity 31;

[0087] By providing a limiting groove 321 on the side wall of the placement cavity 31, and making the extrusion part 322 in the elastic layer 32 embedded or the protrusion arranged on the extrusion part 322 inserted into the limiting groove 321, the position of the elastic layer 32 on the inner side wall of the placement groove is positioned and fixed, or when the driving part 323 drives the lens 4 to be processed to move downward, the elastic layer 32 slides under the action of the reaction force;

[0088] The friction between the driving part 323 and the lens 4 to be processed is increased by frosting the surface of the driving part 323. Similarly, a polytetrafluoroethylene film is plated on the extrusion part 322, the driving part 323 and the side wall of the placement cavity 31 to reduce the friction between the driving part 323 and the inner wall of the placement cavity 31.

[0089] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-lens optical lens grinding jig, comprising a processing end (2), the upper portion of the processing end (2) being a spherical surface, a connecting end (1) being arranged below the processing end (2), a receiving groove (21) being arranged on the spherical surface of the processing end (2), and the receiving groove (21) being used to place a lens (4) to be processed; Features: It also comprises a tray clamp (3), the tray clamp (3) being installed in the containing groove (21), the tray clamp (3) being provided with a placement cavity (31), the lens to be processed (4) being installed in the placement cavity (31), and an elastic layer (32) being installed on the inner wall of the placement cavity (31); A pressure chamber (34) is provided in the tray clamp (3), and a plurality of pressure chambers (34) are arranged along the length direction of the tray clamp (3). The pressure chambers (34) are interconnected through longitudinal holes (342). A gap chamber (324) is provided in the elastic layer (32), and the gap chamber (324) and the pressure chamber (34) are interconnected through a connecting hole (343). An insertion hole (344) communicating with the pressure chamber (34) is provided on the tray clamp (3). A steel needle (23) is installed in the receiving groove (21), and the upper end of the steel needle (23) is inserted into the pressure chamber (34) from the insertion hole (344). The processing end (2) is provided with a connecting cavity (22), the steel needle (23) is provided with a conveying hole (231), the conveying hole (231) and the connecting cavity (22) are connected to each other via an air outlet (221), and the connecting end (1) is provided with an air inlet (222), the air inlet (222) is connected to the connecting cavity (22); A silicone film (33) is installed on the bottom surface of the placement cavity (31), and a surface of the silicone film (33) is provided with raised points (331) distributed in an array, and the silicone film (33) is made of a viscous silicone material; An elastic bag (232) is installed on the steel needle (23), and the elastic bag (232) is located in the pressure chamber (34). After the elastic bag (232) expands, it fills the space in the pressure chamber (34); The edge of one end of the insertion hole (344) located in the pressure chamber is chamfered to obtain a conical inclined surface (341), and the lower end of the elastic bag (232) is located below the lower end of the conical inclined surface (341); The elastic layer (32) comprises an extrusion portion (322) and a driving portion (323), wherein the extrusion portion (322) is located above the driving portion (323), and the extrusion portion (322) is fixedly mounted on the side wall of the placement cavity (31), and there is relative movement between the driving portion (323) and the side wall of the placement cavity (31); There is a gap between the lower end of the driving portion (323) and the bottom surface of the placement cavity (31).

2. The optical lens grinding jig for clamping multiple lenses according to claim 1, characterized in that: The thickness of the side wall of the extrusion portion (322) is greater than the thickness of the side wall of the driving portion (323).

3. The optical lens grinding jig for clamping multiple lenses according to claim 1, characterized in that: A limiting groove (321) is provided on the side wall of the placement cavity (31), and a plurality of groups of the limiting grooves (321) are arranged from top to bottom. The limiting grooves (321) are located in the area where the extrusion portion (322) is located.

4. The optical lens grinding jig for clamping multiple lenses according to claim 1, characterized in that: The side of the driving portion (323) facing the lens (4) to be processed is frosted, and the surface of the area where the driving portion (323) contacts the side wall of the placement cavity (31) is coated with a polytetrafluoroethylene film.

Images