Intraocular lens material cutting device

Abstract

The utility model discloses an artificial lens raw material cutting tool relates to glasses technical field. An artificial lens raw material cutting tool, including support base, apron and a plurality of circular cutting knives, be provided with four floating tabletting assembly on support base, and floating tabletting assembly includes sliding support seat, adjusting nut, floating tabletting, support block and fixed link, and the floating tabletting in the floating tabletting assembly of four corners of floating tabletting assembly adopts arc design, can be along the sliding support seat flexible sliding through the fixed link, and the fine adjustment of pressure is cooperated adjusting nut, realizes the adaptive fitting of raw material surface - when raw material exists microscopic concave and convex, and the floating tabletting can produce trace displacement with the contact surface form, makes the pressure even distribution in raw material edge area, and four corners of the tabletting form the fixed of the surrounding type simultaneously, and the adsorption of vacuum chuck is combined, forms " mechanical pressure + vacuum adsorption " of double fixed, thoroughly solves the problem of raw material slip, warping in the cutting process.

Description

TECHNICAL FIELD

[0001] The utility model relates to glasses technical field, especially relate to a kind of intraocular lens raw material cutting tooling. BACKGROUND

[0002] In the production process of intraocular lens, raw material cutting is extremely critical preceding link, intraocular lens usually adopts polyacrylate raw material, especially hydrophobic polyacrylate, the mechanical properties of this material are flexible, need to be frozen at low temperature to smoothly carry out machine processing, generally want to be cut into 1-2 centimeter diameter round blank from flat plate raw material, for subsequent artificial crystal processing, and cutting tooling as the core equipment to realize this processing process, its performance is directly related to blank quality and production efficiency.

[0003] Among them, intraocular lens raw material cutting tooling can be cut by a plurality of circular cutters at a time, and the processing from plate to round blank is completed, and part adopts six-arrangement cutter to reduce raw material waste, from the perspective of raw material characteristics adaptation, after low-temperature freezing of polyacrylate material, its physical properties will change, although the texture is still flexible, but irregular deformation is easy to produce due to external force, at the same time, the surface flatness of flat plate raw material is difficult to be completely consistent in production, transportation and other links, even after pretreatment, there will be micro concave-convex in cutting operation.

[0004] The compression structure of traditional tooling is mostly rigid fixed mode, cannot flexibly adjust pressure distribution according to actual shape and stress condition of raw material, when rigid pressing piece acts on the surface of raw material with micro unevenness, pressure concentration area is easy to make raw material excessive extrusion deformation, and pressure weak area cannot effectively fix raw material, leading to slip and warping of raw material in cutting process, this unstable fixed state can make the relative position of cutter and raw material deviate, not only affect the size accuracy of round blank, diameter oversize, roundness not up to standard and other problems appear, but also additional internal stress is generated due to raw material deformation, internal stress is released in subsequent processing, can lead to blank cracking, crushing, greatly reduce product yield, increase production cost and time loss. SUMMARY

[0005] The utility model discloses a purpose at least solve one of the technical problems existing in prior art, provide a kind of intraocular lens raw material cutting tool, can solve the flexible adjustment pressure distribution according to the actual morphology and stress condition of raw material, when rigid tabletting acts on the surface of raw material with micro uneven, pressure concentration area is prone to excessive extrusion deformation of raw material, and pressure weak area cannot effectively fix raw material, leading to that raw material slips, warping in cutting process, this unstable fixed state, will make the deviation of relative position of cutting tool and raw material, not only affect the dimensional accuracy of circular blank, diameter out-of-tolerance, roundness not up to standard etc.

[0006] To realize the above-mentioned purpose, the utility model provides the following technical scheme: an intraocular lens raw material cutting tool, including support base, apron and multiple circular cutting tools, four floating tabletting assemblies are arranged on the support base, The floating tabletting assembly includes a sliding support seat, an adjusting nut, a floating tablet, a support block and a fixed rod, the support block is fixedly installed on the outer wall of the corresponding corner of the support base, the fixed rod is fixedly installed on the sliding support seat, one end of the floating tablet is slidably connected to the outer wall of the fixed rod, and the inner wall of the adjusting nut is threadedly connected to the outer wall of the end of the fixed rod away from the sliding support seat. The outer wall of the support block is provided with a sliding support seat groove, the outer walls of the two side protrusions of the support block are slidably connected with pull rods, the inner walls of the two sides of the sliding support seat groove are provided with second limiting block grooves, the interiors of the two second limiting block grooves are slidably connected with limiting blocks, the outer walls of the two sides of the sliding support seat are provided with a plurality of first limiting block grooves, the outer walls of the two pull rods are sleeved with return springs, and the four floating tabletting assemblies are arranged on the support base corresponding to the four corners and are used in cooperation.

[0007] Preferably, the outer wall of the sliding support seat is slidably connected with the interior of the sliding support seat groove. The outer wall of the adjusting nut on the side close to the floating tablet is in contact with the upper surface of the upper base of the floating tablet.

[0008] Preferably, the ends of the two limiting blocks close to the first limiting block grooves are slidably extended to the interior of the sliding support seat groove and are slidably connected with the interiors of the corresponding first limiting block grooves respectively.

[0009] Preferably, the ends of the two pull rods close to the limiting blocks are slidably extended to the interiors of the second limiting block grooves and are fixedly connected with the outer walls of the corresponding limiting blocks respectively. Preferably, the floating tablet is in an arc shape.

[0010] Preferably, two ends of the two reset springs are fixedly connected with the outer wall of one side of the corresponding limiting block and the inner wall of the second limiting block groove respectively.

[0011] Preferably, the front end outer wall of the support base is fixedly connected with a vacuum pump.

[0012] Preferably, the fixed rod in the groove on the cover plate is rotationally connected with the groove in the support block at the rear end of the support base.

[0013] Preferably, the plurality of circular cutters are fixedly installed on the lower surface of the cover plate.

[0014] Preferably, the upper surface of the support base is provided with a vacuum chuck.

[0015] Preferably, the vacuum pump is connected with the vacuum chuck on the upper workbench of the support base through a connecting pipe.

[0016] Compared with the prior art, the utility model has the beneficial effects that: 1、the artificial lens raw material cutting tool, through the arc design of the floating tablet in the floating tablet assembly in four corners of the floating tablet assembly in the floating tablet assembly, can be flexibly slid along the sliding support base through the fixed rod, and the pressure is fine adjusted in cooperation with the adjusting nut, so that the self-adaptive fitting to the surface of the raw material is realized - when the raw material has microscopic concave-convex, the floating tablet can produce a small displacement along the contact surface shape, so that the pressure is uniformly distributed in the edge area of the raw material, and the tablets at four corners form a surrounding type fixing, combined with the adsorption force of the vacuum chuck, the double fixing of "mechanical pressing + vacuum adsorption" is formed, so that the problems of raw material slippage and warping in the cutting process are solved, and the relative position stability of the circular cutter and the raw material is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further illustrated below in combination with the drawings and examples: Figure 1 It is a three-dimensional structure schematic view of the utility model; Figure 2 It is a structure schematic view of the utility model cover plate outside; Figure 3 It is a structure schematic view of the utility model Figure 2 It is a structure schematic view of the utility model A place amplification diagram; Figure 4 It is a structure schematic view of the utility model support base outside.

[0018] Mark: 1, support base; 2, sliding support seat; 3, adjusting nut; 4, floating tablet; 5, first limiting block groove; 6, cover plate; 7, pull rod; 8, vacuum pump; 9, vacuum chuck; 10, circular cutter; 11, reset spring; 12, limiting block; 13, second limiting block groove; 14, sliding support seat groove; 15, support block; 16, fixed rod. DETAILED DESCRIPTION

[0019] This part will describe the specific embodiments of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] In the description of the utility model, it is understood that the orientation description, such as up, down, front, back, left, right and the like, is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as a limitation on the utility model.

[0021] In the description of the utility model, greater than, less than, more than and the like are understood as not including the number, and above, below and the like are understood as including the number.If there is a description of the first, the second is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0022] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0023] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a intraocular lens raw material cutting tool, including support base 1, cover plate 6 and multiple circular cutting knives 10; Four floating tablet assemblies are arranged on support base 1; The floating tablet pressing assembly comprises a sliding support base 2, an adjusting nut 3, a floating tablet 4, a support block 15 and a fixed rod 16. The support block 15 is fixedly installed on the outer wall of the corresponding corner of the support base 1. The fixed rod 16 is fixedly installed on the sliding support base 2. One end of the floating tablet 4 is slidingly sleeved on the outer wall of the fixed rod 16. The inner wall of the adjusting nut 3 is threadedly connected with the outer wall of the end of the fixed rod 16 away from the sliding support base 2. The outer wall of the support block 15 is provided with a sliding support base groove 14. The outer wall of the sliding support base 2 is slidingly connected with the inside of the sliding support base groove 14. The outer wall of the side of the adjusting nut 3 close to the floating tablet 4 is in contact with the upper surface of the upper base of the floating tablet 4. The outer walls of the two side protrusions of the support block 15 are slidingly connected with pull rods 7. The inner walls of the two sides of the sliding support base groove 14 are provided with second limiting block grooves 13. The inside of the two second limiting block grooves 13 is slidingly connected with limiting blocks 12. The outer walls of the two sides of the sliding support base 2 are provided with a plurality of first limiting block grooves 5. The ends of the two limiting blocks 12 close to the first limiting block grooves 5 are slidingly extended into the inside of the sliding support base groove 14 and are slidingly connected with the inside of the corresponding first limiting block groove 5. The ends of the two pull rods 7 close to the limiting blocks 12 are slidingly extended into the inside of the second limiting block groove 13 and are fixedly connected with the outer wall of the corresponding limiting block 12. The floating tablet 4 is arc-shaped. The outer walls of the two pull rods 7 are sleeved with return springs 11. The two ends of the two return springs 11 are fixedly connected with the outer wall of the side of the corresponding limiting block 12 and the inner wall of the second limiting block groove 13. Four floating tablet pressing assemblies are arranged on the support base 1 on the corresponding four corners and are used in cooperation.

[0024] The outer wall of the front end of the support base 1 is fixedly connected with a vacuum pump 8. The fixed rod in the groove of the cover plate 6 is rotationally connected with the groove in the rear end support block of the support base 1. A plurality of circular cutting knives 10 are fixedly installed on the lower surface of the cover plate 6. A vacuum chuck 9 is installed on the workbench on the upper surface of the support base 1. The vacuum pump 8 is connected with the vacuum chuck 9 on the workbench of the support base 1 through a connecting pipe.

[0025] Further, in use of the device, first, when the IOL raw material cutting operation is performed, first, according to the specifications and thickness of the raw material, the position of the floating tablet assembly is adjusted, the pull rod 7 is pulled, the limiting block 12 is slid in the second limiting block slot 13 and the return spring 11 is compressed, so that the limiting block 12 is separated from the first limiting block slot 5 on the sliding support seat 2, at this time, the sliding support seat 2 can be pushed to slide in the sliding support seat slot 14 of the support block 15, after the sliding support seat 2 is adjusted to the appropriate position, the pull rod 7 is loosened, the return spring 11 returns to its original state, the limiting block 12 is pushed to re-enter the corresponding first limiting block slot 5, the position of the sliding support seat 2 is fixed, then the adjusting nut 3 is rotated, since the adjusting nut 3 is threadedly connected with the fixed rod 16, the rotation of the adjusting nut 3 will move along the fixed rod 16, thereby adjusting the pressure on the floating tablet 4, so that the floating tablet 4 can adapt to raw materials of different thicknesses, then the flat polyacrylate raw material is placed on the vacuum chuck 9 on the upper surface of the workbench of the support base 1, the vacuum pump 8 is started, the vacuum pump 8 generates suction force on the vacuum chuck 9 through the connecting pipe to preliminarily adsorb and fix the raw material, then the cover plate 6 is rotated, so that the cover plate 6 rotates around the rear end support block of the support base 1 and gradually covers the support base 1, the multiple circular cutters 10 on the lower surface of the cover plate 6 are gradually close to the raw material, during the covering process, the floating tablets 4 on the four corners first contact the raw material, since the floating tablets 4 are arc-shaped and can slide along the fixed rod 16, they can adapt to the micro-unevenness of the surface of the raw material, under the pressure of the adjusting nut 3, the raw material is further pressed and fixed, preventing the raw material from slipping and warping during cutting, at the same time, as the cover plate 6 continues to rotate, the circular cutters 10 contact the raw material and apply pressure, completing the cutting of the raw material, the flat raw material is cut into multiple circular blanks with diameters meeting the requirements, then after the cutting is completed, the cover plate 6 is rotated in the opposite direction, so that the circular cutters 10 are separated from the blank, the vacuum pump 8 is turned off, the vacuum chuck 9 loses suction, the cut circular blank is taken out, and one cutting operation is completed.

[0026] By adopting the arc-shaped design of the floating tablets 4 in the floating tablet assembly at the four corners, the floating tablets 4 can slide along the sliding support seat 2 through the fixed rod 16, and the pressure can be finely adjusted through the adjusting nut 3, so that the raw material surface is adaptively attached, when there is micro-unevenness on the raw material, the floating tablets 4 can produce micro-displacement according to the contact surface shape, so that the pressure is uniformly distributed on the edge area of the raw material, at the same time, the tablets at the four corners form a surrounding fixation, combined with the adsorption force of the vacuum chuck 9, a double fixation of "mechanical pressing + vacuum adsorption" is formed, completely solving the problems of raw material slipping and warping during cutting, and ensuring the stability of the relative position of the circular cutter 10 and the raw material.

[0027] Structure description: support base 1: as the basis of the whole cutting tool structure, used for mounting and fixing other components, the upper surface workbench is provided with vacuum chuck 9, the front end outer wall is fixedly connected with vacuum pump 8, the rear end is provided with support block for connecting with cover plate 6, providing stable support platform for the whole cutting process; Sliding support seat 2: the outer wall is slidably connected with the sliding support seat groove 14 of the support block 15, can slide in the sliding support seat groove 14, the outer wall of both sides is provided with a plurality of first limiting block slot 5, used for cooperating with limiting block 12 to realize position fixing, the fixed rod 16 is fixedly installed on it, providing installation basis for floating pressing piece 4 and adjusting nut 3; Adjusting nut 3: the inner wall is threadedly connected with the outer wall of the fixed rod 16 away from the sliding support seat 2, the outer wall of the side close to the floating pressing piece 4 is in contact with the upper surface of the upper base of the floating pressing piece 4, the pressure on the floating pressing piece 4 can be adjusted by rotating; Floating pressing piece 4: the floating pressing piece 4 is arc-shaped, one end is slidably sleeved on the outer wall of the fixed rod 16, can slide up and down along the fixed rod 16, under the action of the adjusting nut 3, the raw materials are pressed and fixed, the arc-shaped design can better adapt to the form of raw materials; Support block 15: fixedly installed on the corresponding outer wall of the support base 1, the outer wall is provided with a sliding support seat groove 14, providing sliding track for the sliding support seat 2, the two sides are provided with protrusions, the outer wall of the protrusion is slidably connected with the pull rod 7; Fixed rod 16: fixedly installed on the sliding support seat 2, used for installing floating pressing piece 4 and adjusting nut 3, is the installation carrier of the two; Pull rod 7: the outer wall of the protrusion on both sides of the support block 15 is slidably connected with the pull rod 7, one end close to the limiting block 12 slides into the second limiting block slot 13 and is fixedly connected with the outer wall of the limiting block 12, pulling the pull rod 7 can drive the limiting block 12 to move; Limiting block 12: the inner wall of the sliding support seat groove 14 is provided with a second limiting block slot 13 on both sides, the limiting block 12 slides in the second limiting block slot 13, one end close to the first limiting block slot 5 slides into the inner part of the sliding support seat groove 14 and is slidably connected with the first limiting block slot 5, used for limiting the position of the sliding support seat 2; Reset spring 11: the outer wall of the two pull rods 7 is sleeved with reset spring 11, the two ends are respectively fixedly connected with the outer wall of the corresponding limiting block 12 and the inner wall of the second limiting block slot 13, when the pull rod 7 is not stressed, it can push the limiting block 12 to reset, so that it remains connected with the first limiting block slot 5; Cover plate 6: the upper groove fixed rod is rotatably connected with the groove inside the rear end support block of the support base 1, can rotate around the rear end support block of the support base 1, the lower surface is fixedly installed with a plurality of circular cutters 10, through rotating, the cover plate 6 can be closed and opened with the support base 1, and then drive the circular cutters 10 to cut; Circular cutting knife 10: a plurality of circular cutting knives 10 are fixedly installed on the lower surface of the cover plate 6 and move with the cover plate 6 to cut the raw material into a circular blank; Vacuum pump 8: fixedly connected to the front end outer wall of the support base 1 and connected to the vacuum chuck 9 on the workbench of the support base 1 through a connecting pipe to provide vacuum power for the vacuum chuck 9; Vacuum chuck 9: installed on the workbench on the upper surface of the support base 1 and generates suction under the action of the vacuum pump 8 to adsorb and fix the raw material placed on the workbench.

[0028] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A cutting fixture for artificial lens raw materials, comprising a support base (1), a cover plate (6), and a plurality of circular cutting blades (10), characterized in that: The support base (1) is provided with four floating pressure plate assemblies; The floating pressure plate assembly includes a sliding support base (2), an adjusting nut (3), a floating pressure plate (4), a support block (15), and a fixing rod (16). The support block (15) is fixedly installed on the outer wall of the corresponding corner of the support base (1), and the fixing rod (16) is fixedly installed on the sliding support base (2). One end of the floating pressure plate (4) is slidably sleeved on the outer wall of the fixing rod (16), and the inner wall of the adjusting nut (3) is threadedly connected to the outer wall of the end of the fixing rod (16) away from the sliding support base (2). Among them, the outer wall of the support block (15) is provided with a sliding support seat groove (14), the outer walls of the protrusions on both sides of the support block (15) are slidably connected with a pull rod (7), the inner walls of both sides of the sliding support seat groove (14) are provided with a second limiting block groove (13), the two second limiting block grooves (13) are slidably connected with a limiting block (12), the outer walls of both sides of the sliding support seat (2) are provided with multiple first limiting block grooves (5), the outer walls of the two pull rods (7) are sleeved with a reset spring (11), and the four floating pressure plate assemblies are set on the support base (1) at the four corners and used in conjunction.

2. The cutting fixture for intraocular lens raw materials according to claim 1, characterized in that: The outer wall of the sliding support (2) is slidably connected to the inside of the sliding support groove (14); Among them, the outer wall of the adjusting nut (3) near the floating pressure plate (4) is in contact with the upper surface of the base of the floating pressure plate (4).

3. The intraocular lens raw material cutting fixture according to claim 1, characterized in that: Both of the limiting blocks (12) extend into the interior of the sliding support seat groove (14) at the end near the first limiting block groove (5) and are respectively slidably connected to the interior of the corresponding first limiting block groove (5).

4. The intraocular lens raw material cutting fixture according to claim 1, characterized in that: The ends of the two pull rods (7) near the limiting block (12) are slidably extended into the interior of the second limiting block groove (13) and are respectively fixedly connected to the outer wall of the corresponding limiting block (12); Among them, the floating tablet (4) is arc-shaped.

5. The cutting fixture for intraocular lens raw materials according to claim 1, characterized in that: The two ends of the two reset springs (11) are respectively fixedly connected to the outer wall of one side of the corresponding limiting block (12) and the inner wall of the second limiting block groove (13).

6. The intraocular lens raw material cutting fixture according to claim 1, characterized in that: A vacuum pump (8) is fixedly connected to the front outer wall of the support base (1).

7. The intraocular lens raw material cutting fixture according to claim 1, characterized in that: The fixing rod in the groove on the cover plate (6) is rotatably connected to the groove in the support block at the rear end of the support base (1).

8. The cutting fixture for intraocular lens raw materials according to claim 1, characterized in that: Multiple circular cutters (10) are fixedly mounted on the lower surface of the cover plate (6).

9. The cutting fixture for intraocular lens raw materials according to claim 1, characterized in that: The upper surface of the support base (1) is equipped with a vacuum suction cup (9).

10. The intraocular lens raw material cutting fixture according to claim 6, characterized in that: The vacuum pump (8) is connected to the vacuum suction cup (9) on the worktable of the support base (1) via a connecting pipe.

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