CN100540489C - Precision glass molding forming device capable of synchronously coring - Google Patents

Abstract

The present invention discloses a precision glass molding device capable of synchronous core extraction, comprising a first mold core, a second mold core arranged along an axis relative to the first mold core, a positioning member arranged concentrically with the first and second mold cores and sleeved on the outside of the first and second mold cores, and a core extraction member arranged between the positioning member and the first and second mold cores. By this, when a glass material is placed between the first and second mold cores, and the pre-molding and continuous closure are performed in sequence until the glass material reaches a center thickness, a residual material can be protruded outside the first and second mold cores, and the residual material can be cut off and the purpose of core extraction can be achieved by using the movement of the core extraction member along the axis.

Description

Precision Glass Molding Device with Simultaneous Coring

technical field

The invention relates to a glass molding equipment, in particular to a precision glass molding device capable of synchronous core taking.

Background technique

The existing precision glass molding (Precision Glass Molding) technology is to use the opposite shaping surface of the second mold core to press the high-temperature softened nitrate material to form a primary body, which must be moved to the first core. Take the machine for turning and grinding to produce glass lenses for practical applications.

As shown in Figure 1, a general coring machine 1 includes a clamping jig 101 that can firmly clamp an embryo body 2 and is arranged along an axis direction and a grinding machine that can grind the embryo body 2 Wheel 102. Although the core taking machine 1 can be used to achieve the core taking purpose of molded glass, because of the stricter specification requirements for glass molded lenses nowadays, whether it is eccentricity, appearance, or size, and the core taking coefficient of some aspheric lenses is very low, the core It is extremely difficult to take, that is to say, there are still the following problems in actual core taking:

1. When the primordial body 2 is clamped by the clamping fixture 101, a central line of the primordial body 2 is likely to deviate from the axis, resulting in excessive eccentricity, and the cored glass will also have a large Errors, especially, will also affect the subsequent coating yield.

2. The clamping jig 101 is easy to pinch the glass mirror surface, and the defect rate is relatively high.

3. In order to prevent the clamping fixture 101 from pinching the glass mirror surface, a layer of oil can be applied to the surface of the primordial body 2 before the core is taken, and the oil must be removed with a cleaning agent (trichloroethylene) after the core is taken. However, some primordial bodies 2 have been oiled for too long, and the oil atomization on the surface cannot be removed even after cleaning, so they must be polished again. In this way, not only will oiling, degreasing, polishing and other operations And prolong the manufacturing process, and it is easy to damage the mirror surface during polishing.

Fourth, using the grinding wheel 102 to grind the remaining material of the primordial body 2 will consume grinding stones and increase costs.

5. After the pressing of the primordial body 2 is completed, it must go through the process of core taking, turning and grinding, which not only increases the production process and consumes man-hours, but also fails to improve the production capacity and quality.

Contents of the invention

The object of the present invention is to provide a precision glass molding device capable of synchronous coring that can remove the remaining material outside the specified diameter of the lens while molding the glass to produce the molding and coring function.

The precision glass molding device capable of synchronous core taking of the present invention comprises a first mold core, a second mold core set opposite to the first mold core, and a set of positioning parts arranged outside the first and second mold cores And a set of core taking parts arranged between the positioning part and the first and second mold cores. The first mold core has a first molding surface, a first outer peripheral surface extending along an axis from the periphery of the first molding surface, and a first edge. The second mold core is arranged opposite to the first mold core along the axis, and has a second molding surface opposite to the first molding surface of the first mold core, and a A second outer peripheral surface extending along the axis, and a second end edge disposed at the junction of the second shaping surface and the second outer peripheral surface. The positioning member is arranged concentrically with the first and second mold cores and sheathed outside the first and second mold cores, and has an inner peripheral surface opposite to the first and second outer peripheral surfaces. The core taking part is sleeved between the positioning part and the first and second mold cores, and has an inner ring surface matching the first and second outer peripheral surfaces, and an inner ring surface opposite to the inner ring surface and can be positioned along the inner ring surface. An outer ring surface that slides on the peripheral surface, a cutting edge provided at the side end of the inner ring surface, and a conical limiting part arranged outside the cutting edge, the limiting part is gradually inclined outward from the cutting edge Expanding, when the core-taking piece slides relative to the first and second mold cores, the cutting edge can be displaced from a first position not beyond the first end edge to a second position beyond the second end edge.

In this way, while using the first and second mold cores to mold the nitrate material, the core-taking piece can be used to perform core-taking operations, which not only improves the yield of glass products, but also saves grinding and clamping fixtures... and other increased costs.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

Fig. 1 is a schematic diagram of an existing glass cored by turning and grinding;

Figure 2 is a plane exploded view of a preferred embodiment of the present invention;

Fig. 3 is the plan combination schematic diagram of above-mentioned preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of the operation of the above-mentioned preferred embodiment of the present invention, illustrating that a first mold core is abutted against a second mold core along an axis and a nitrate material is squeezed;

Fig. 5 is a schematic diagram of the completion of core taking in the above-mentioned preferred embodiment of the present invention, illustrating that the first mold core continues to abut against the second mold core and a core member is displaced along the axis to remove a surplus material.

Detailed ways

As shown in Figure 2, a preferred embodiment of the precision glass molding device capable of synchronous core taking in the present invention includes a first mold core 10, a second mold core 20 arranged opposite to the first mold core 10, a set of The positioning piece 30 is arranged outside the first and second mold cores 10 , 20 and a set of core-taking pieces 40 is set between the positioning piece 30 and the first and second mold cores 10 , 20 .

The first mold core 10 is made into a step-column shape, and has a first plate portion 11 and a first mold bar 12 protruding from the bottom surface of the first plate portion 11 along an axis L. The first mold bar 12 The diameter of the circle is the same as the outer diameter of the glass product, and has a first shaping surface 121 located on a bottom surface, a second extending from the periphery of the first shaping surface 121 along the axis L toward the first plate portion 11 An outer peripheral surface 122 and a first end edge 123 disposed at the junction of the first shaping surface 121 and the first outer peripheral surface 122 . There is a first distance H1 between a bottom surface of the first plate portion 11 and the first edge 123 .

The second mold core 20 is arranged below the first mold core 10 along the axis L, and is also made into a stepped columnar shape, and has a second disc portion 21 and a top portion formed by the second disc portion 21 along the axis L. The second mold bar 22 that is convexly provided. The second plate part 21 has a guide part 211 which is arranged on the top periphery and is inclined from top to bottom. The first molding surface 121 of the mold core 10 is an opposite second molding surface 221, a second outer peripheral surface 222 extending from the periphery of the second molding surface 221 along the axis L toward the second disc portion 21 and A second end edge 223 is disposed at the junction of the second shaping surface 221 and the second outer peripheral surface 222 .

The positioning member 30 is made into a hollow cylindrical shape, and is set concentrically with the first and second mold cores 10, 20 and sleeved outside the first and second mold cores 10, 20, and has a pair of first disc parts The top end 31 of 11, a bottom end 32 that can be nested and positioned on the second disc portion 21, a bottom end 32 that is opposite to the first and second outer peripheral surfaces 122, 222 and extends from the top end 31 to the bottom end The inner peripheral surface 33 of the top portion 32 and a plurality of exhaust holes 34 arranged between the top and bottom end portions 31 and 32 . The bottom portion 32 is recessed with a fitting portion 321 nested with the guiding portion 211 .

The core taking part 40 is made into a hollow cylindrical shape and is sleeved between the positioning part 30 and the first and second mold cores 10, 20, and has a pair of pressing end parts 41 of the first disc part 11, a An operating end portion 42 opposite to the pressing end portion 41, an inner ring surface 43 extending from the pressing end portion 41 to the operating end portion 42 and opposite to the first and second outer peripheral surfaces 122, 222, an inner ring surface 43 with The inner ring surface 43 is arranged opposite to the outer ring surface 44 which can slide along the inner peripheral surface 33 , a blade edge 45 which is arranged on the operating end 42 and is located at the side end of the inner ring surface 43 and a blade edge 45 which is arranged on the blade The limiting portion 46 outside the edge 45 is tapered, and the limiting portion 46 gradually expands obliquely downward from the edge 45 . There is a second distance H2 between a top surface of the pressing end portion 41 and the edge 45 , and the second distance H2 is smaller than the first distance H1 .

The forming device of the present invention is arranged in an environment with a heating unit (there are many ways to implement, and it is not the application target of the present invention, so the figure is not shown), and as shown in Figure 3, when the glass is to be molded, Firstly, a predetermined shape and quantitative nitrox material 100 is placed between the first and second molding surfaces 121, 221 of the first and second mold cores 10, 20, and the edge 45 of the core taking part 40 It is in a preparatory position, that is, the blade edge 45 corresponds to the first end edge 123, and the stopper 46 straddles the top periphery of the nitrocellulose 100, and the gap between the first plate portion 11 and the pressing end portion 41 There is a first gap h1 between them, and there is a second gap h2 between the first disc portion 11 and the top end portion 31 .

As shown in Figure 4 again, when the nitrox material 100 is heated to a molding temperature to soften, the first mold core 10 can be driven along the axis L toward the second mold core 20 for pre-mold closing. A mold core 10 moves down, so that the first disc portion 11 is in contact with the pressing end portion 41 of the core taking part 40, so that the first gap h1 in FIG. 3 disappears, and then the first mold core 10 and the core taking part 40 are again Slightly move down together, so that the second gap h2 in Figure 3 is reduced to a third gap h3, and the nitrate material 100 is squeezed to produce a surplus material 110 protruding outside the first and second outer peripheral surfaces 122, 222 , at this time, utilizing the effect that the second distance H2 is smaller than the first distance H1, the cutting edge 45 of the core taking member 40 is in a first position that has not crossed the first end edge 123, and the cutting edge 45 has not yet The residue 110 is acted upon.

As shown in Figure 5 again, when the first mold core 10 continues to lean towards the second mold core 20 along the axis L, the third gap h3 in Figure 4 is narrowed again, and the temperature of the nitrocellulose 100 is kept at When above a softening temperature and reaching a central thickness, the core taking part 40 will be displaced along the axis L, and the cutting edge 45 can pass over the second mold core from the first position that has not yet crossed the first end edge 123 The second end edge 223 of 20 is displaced to a second position, and the remaining material 110 is cut off and falls down with the core taking part 40, so that a prototype stays in the first and second mold cores 10, Between 20.

When the prototype body between the first and second molding surfaces 121, 221 has dropped below a glass transition temperature and is shaped into a glass product 100', then take out the first mold core 10, glass product 100', and core pieces 40, etc., to facilitate the next molding operation.

And the remaining material 110 after cutting will stay between the positioning member 30 and the second mold core 20 , after several times of molding, the remaining material will be cleaned.

Therefore, the present invention utilizes the above-mentioned forming device, which can avoid the existing turning and grinding core-taking process, and has the following advantages:

1. The process of molding the nitrate material 100 and taking the core into the glass product 100' is all carried out in the molding device, so the glass product 100 will not have the problem of being clamped by the clamping jig, and it can also improve the clamping problem due to clamping. The resulting eccentricity is too large, the glass will produce large errors, and the coating yield will be affected...etc.

2. Because there is no post-engineering of turning and grinding, and there is no problem of being pinched by the clamping fixture, the yield rate can be improved.

3. Because there is no need to use jigs for grinding, oiling, degreasing, polishing, and other processes can be omitted, which can increase production capacity and reduce costs.

4. Because there is no post-engineering of turning and grinding, the setting of clamping fixtures and grinding wheels can also be saved, which can reduce costs.

5. The core taking part 40 is directly installed on the forming device, and the process of taking the glass material 100 into a finished glass product 100' is carried out in a consistent and continuous manner, which not only simplifies the production process and saves man-hours, but also can Improve production capacity and quality.

Claims (4)

1. A precision glass molding device capable of synchronous coring, characterized in that it comprises: A first mold core, having a first molding surface, a first outer peripheral surface extending from the periphery of the first molding surface along an axis, and a the first edge of A second mold core is arranged opposite to the first mold core along the axis, and has a second molding surface opposite to the first molding surface of the first mold core, and a second molding surface formed by the second mold core. a second outer peripheral surface whose peripheral edge extends along the axis, and a second end edge arranged at the junction of the second shaping surface and the second outer peripheral surface; A positioning member is arranged concentrically with the first and second mold cores and sleeved outside the first and second mold cores, and has an inner peripheral surface opposite to the first and second outer peripheral surfaces; and A core extractor is sleeved between the positioning member and the first and second mold cores, and has an inner ring surface matching the first and second outer peripheral surfaces, and an inner ring surface opposite to the inner ring surface and can be positioned along the inner ring surface. The outer ring surface sliding on the inner peripheral surface, a cutting edge provided at the side end of the inner ring surface, and a tapered limiting part arranged outside the cutting edge, the limiting part is gradually outward from the cutting edge When the core is expanded obliquely, the core-taking piece slides relative to the first and second mold cores, and the blade edge will be displaced from a first position not beyond the first end edge to a second position beyond the second end edge. 2. The synchronously coring precision glass molding device according to claim 1, characterized in that: the first mold core is arranged above the second mold core, and relative to the second mold core along the axis produce closeness. 3. The synchronously coring precision glass molding device as claimed in claim 2, characterized in that: the first and second mold cores also each have a set along the axis opposite to the first and second molding surfaces The first and second disk parts, the second disk part has a guiding part arranged on the top peripheral edge and arranged obliquely, and the positioning part has a fitting part that is complementary to the concave and convex of the guiding part and nested with each other. 4. The synchronously coring precision glass molding device as claimed in claim 3, characterized in that there is a first distance between a bottom surface of the first plate portion of the first mold core and the first end edge, The core member also has a pressing end opposite to the cutting edge and opposite to the first plate portion, a second distance between a top surface of the pressing end and the cutting edge, and the second distance is less than the first distance.

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