Optical lens hot press forming die

Abstract

The utility model discloses an optical lens hot press forming die which comprises an outer die assembly, an inner die assembly and a positioning assembly, the outer die assembly comprises an outer die sleeve and a heating ring which is fixedly arranged in the outer die sleeve and is concentric with the outer die sleeve, and a plurality of through holes are formed in the side wall of the outer die sleeve in the circumferential direction; the inner mold assembly comprises a lower mold core placed in the heating ring; the positioning assembly comprises a plurality of positioning pieces and driving pieces, the positioning pieces penetrate through the corresponding through holes in a sliding mode respectively, and the driving pieces are connected with one ends of the positioning pieces and used for driving the positioning pieces to slide along the corresponding through holes so that the other ends of the positioning pieces can abut against or be separated from the lower die core. The utility model has the beneficial effects that the lower die core can be quickly positioned by virtue of the positioning assembly, the concentricity of the lower die core and the heating ring is not required to be judged by visual inspection of people, and the positioning accuracy of the concentricity of the lower die core and the heating ring is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lens production, in particular to a hot pressing molding die for an optical lens. Background Art

[0002] Optical lens is an optical element used to aggregate or disperse light, and can be widely used in various fields such as automobiles, security, digital cameras, lasers, optical instruments, etc. The production method of optical lens is to soften a glass block of appropriate weight at high temperature, put it into the lower mold of the press equipment, and use the punch to punch to obtain the corresponding lens product.

[0003] When using an existing optical lens hot pressing mold (such as an optical lens pressing mold heating device disclosed in application No. 201920537730.3), the lower mold is placed in the middle of a heating ring. In order to ensure uniform heating of all parts of the lower mold, it is necessary to ensure that the lower mold is concentric with the heating ring. However, when placing the lower mold in the middle of the heating ring, the concentricity of the lower mold and the heating ring is generally judged by observing with the naked eye, and the accuracy is poor. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies and propose an optical lens hot pressing molding mold to solve the technical problem in the prior art that when placing the lower mold in the middle of the heating ring, the concentricity of the lower mold and the heating ring is judged by the naked eye and the accuracy is poor.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model provides an optical lens hot pressing molding die, comprising:

[0006] An outer mold assembly, comprising an outer mold sleeve and a heating ring fixed in the outer mold sleeve and concentric with the outer mold sleeve, wherein a plurality of through holes are opened on the side wall of the outer mold sleeve along the circumferential direction;

[0007] an inner mold assembly including a lower mold core placed within the heating ring;

[0008] The positioning assembly includes a plurality of positioning members and a driving member which slide through the corresponding through holes respectively. The driving member is connected to one end of each of the positioning members and is used to drive each of the positioning members to slide along the corresponding through holes so that the other end of each of the positioning members is pressed against or separated from the lower mold core.

[0009] Furthermore, the driving member includes a driving ring, a plurality of sliding columns and a plurality of elastic members. The driving ring is rotatably sleeved on the outer mold sleeve. A plurality of arc grooves are circumferentially provided on the driving ring. The distances from both ends of the arc groove to the center of the driving ring are unequal. One end of each sliding column is slidably connected to the corresponding arc groove, and the other end of each sliding column is fixedly connected to one end of the corresponding positioning member. Each elastic member is sleeved on the corresponding positioning member, one end of the elastic member is fixedly connected to one end of the positioning member, and the other end of the elastic member is fixedly connected to the outer wall of the outer mold sleeve.

[0010] Furthermore, the driving member also includes a plurality of limiting caps, each of which is fixedly mounted on one end of the corresponding positioning member, and the other end of the elastic member is fixedly connected to the limiting cap.

[0011] Furthermore, the driving member also includes a handle, one end of which is fixedly connected to the driving ring.

[0012] Furthermore, the elastic member is a spring.

[0013] Furthermore, the outer mold assembly also includes a bottom plate, the bottom plate is provided with a through hole, and the outer mold sleeve is fixedly mounted on the bottom plate and is concentric with the through hole.

[0014] Furthermore, there are a plurality of heating rings, each of which is fixedly arranged in the outer mold sleeve at intervals from bottom to top, and the outer mold assembly also includes a plurality of separating rings, each of which is respectively arranged between two of the heating rings, at the bottom of the lowest heating ring, and at the top of the highest heating ring.

[0015] Furthermore, the inner mold assembly also includes an inner mold sleeve, which is placed in the heating ring, and the lower mold core is slidably arranged in the inner mold sleeve, and the other end of each of the positioning members is pressed against or separated from the inner mold sleeve.

[0016] Furthermore, the inner mold assembly also includes an upper mold core, which is arranged directly above the lower mold core and can be detachably fixed on the hydraulic press. The upper mold core can move up and down, and a mold cavity is opened on the lower surface of the upper mold core.

[0017] Furthermore, the optical lens hot pressing molding mold also includes a telescopic driving component, which is fixed to the bottom of the base plate. The output shaft of the telescopic driving component slides through the through hole and abuts against the lower mold core to drive the lower mold core to move up and down.

[0018] Compared with the prior art, the beneficial effects of the utility model include: when in use, by manipulating the driving member, the driving member can drive each positioning member to slide outward along the corresponding through hole, so that each positioning member is separated from each other, and the lower mold core is placed in the heating ring; and then by manipulating the driving member, the driving member can drive each positioning member to slide inward along the corresponding through hole, so that each positioning member is retracted until the other end of each positioning member is tightly pressed against the lower mold core, thereby making the lower mold core concentric with the heating ring. The positioning assembly can be used to quickly position the lower mold core, and there is no need to judge the concentricity of the lower mold core and the heating ring by naked eye observation, thereby improving the positioning accuracy of the concentricity of the lower mold core and the heating ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a hot pressing molding mold for an optical lens provided by the utility model;

[0020] Figure 2 yes Figure 1 A cross-sectional view of a hot pressing mold for an optical lens;

[0021] Figure 3 yes Figure 1 A schematic diagram of the stereoscopic structure of a hot pressing molding mold for an optical lens in another viewing angle;

[0022] In the figure: 100 - outer mold assembly, 110 - outer mold sleeve, 111 - through hole, 120 - heating ring, 130 - bottom plate, 131 - perforation, 140 - separation ring, 200 - inner mold assembly, 210 - lower mold core, 220 - inner mold sleeve, 230 - upper mold core, 231 - cavity, 300 - positioning assembly, 310 - positioning member, 320 - driving member, 321 - driving ring, 3211 - arc groove, 322 - sliding column, 323 - elastic member, 324 - limiting cap, 325 - handle, 400 - telescopic driving member. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The utility model provides an optical lens hot pressing forming mold, the structure of which is as follows Figure 1As shown, it includes an outer mold component 100, an inner mold component 200 and a positioning component 300, the outer mold component 100 includes an outer mold sleeve 110 and a heating ring 120 fixed in the outer mold sleeve 110 and concentric with the outer mold sleeve 110, and a plurality of through holes 111 are opened on the side wall of the outer mold sleeve 110 along the circumferential direction; the inner mold component 200 includes a lower mold core 210 placed in the heating ring 120; the positioning component 300 includes a plurality of positioning members 310 and a driving member 320 that slide through the corresponding through holes 111 respectively, and the driving member 320 is connected to one end of each of the positioning members 310, and is used to drive each of the positioning members 310 to slide along the corresponding through hole 111, so that the other end of each of the positioning members 310 is pressed against or separated from the lower mold core 210.

[0025] When in use, by manipulating the driving member 320, the driving member 320 can drive each of the positioning members 310 to slide outward along the corresponding through hole 111, so that each of the positioning members 310 is separated from each other, and the lower mold core 210 is placed in the heating ring 120, and then by manipulating the driving member 320, the driving member 320 can drive each of the positioning members 310 to slide inward along the corresponding through hole 111, so that each of the positioning members 310 is retracted to each other until the other end of each of the positioning members 310 is tightly pressed against the lower mold core 210, so that the lower mold core 210 is concentric with the heating ring 120. With the help of the positioning assembly 300, the lower mold core 210 can be quickly positioned, and it is no longer necessary to judge the concentricity of the lower mold core 210 and the heating ring 120 by naked eye observation, thereby improving the positioning accuracy of the concentricity of the lower mold core 210 and the heating ring 120.

[0026] As a preferred embodiment, please refer to Figure 1 and Figure 2The driving member 320 includes a driving ring 321, a plurality of sliding posts 322 and a plurality of elastic members 323. The driving ring 321 is rotatably sleeved on the outer mold sleeve 110. The driving ring 321 is provided with a plurality of arc grooves 3211 along the circumferential direction. The distances between the two ends of the arc groove 3211 and the center of the driving ring 321 are unequal. One end of each sliding post 322 is slidably connected to the corresponding arc groove 3211. The other end of each sliding post 322 is fixedly connected to one end of the corresponding positioning member 310. Each elastic member 323 is sleeved on the corresponding positioning member 310. One end of the elastic member 323 is fixedly connected to one end of the positioning member 310. The other end of the elastic member 323 is fixedly connected to the outer wall of the outer mold sleeve 110. When the lower mold core 210 is placed in the heating ring 120, the driving ring 321 is rotated in the opposite direction. Due to the The sliding columns 322 are respectively restricted by the corresponding arc grooves 3211, and each of the sliding columns 322 is respectively fixedly connected to the corresponding positioning members 310, so that each of the sliding columns 322 is also restricted by the corresponding through holes 111. During the reverse rotation of the driving ring 321, each of the positioning members 310 will synchronously slide outward along the corresponding through holes 111, so that each of the positioning members 310 can be separated from each other. At the same time, each of the elastic members 323 is in a stretched state and accumulates stretching elastic potential energy. The lower mold core 210 is placed in the heating ring 120, and the driving ring 321 is released. At this time, each of the elastic members 323 releases the stretching elastic potential energy and pushes each of the positioning members 310 to slide synchronously inward along the corresponding through holes 111, so that each of the positioning members 310 can be retracted together until they are all tightly pressed against the side walls of the lower mold core 210.

[0027] As a preferred embodiment, please refer to Figure 1 The driving member 320 also includes a plurality of limiting caps 324 , each of which is fixedly disposed at one end of the corresponding positioning member 310 , and the other end of the elastic member 323 is fixedly connected to the limiting cap 324 , so as to facilitate the installation of the elastic member 323 .

[0028] As a preferred embodiment, please refer to Figure 1 The driving member 320 further includes a handle 325 , one end of which is fixedly connected to the driving ring 321 , so that a person can rotate the driving ring 321 by holding the handle 325 .

[0029] As a preferred embodiment, please refer to Figure 1 The elastic member 323 is a spring, which can accumulate stretching elastic potential energy when stretched, and release the stretching elastic potential energy when the stretching force disappears.

[0030] As a preferred embodiment, please refer to Figure 2 The outer mold assembly 100 also includes a bottom plate 130 , and a through hole 131 is formed on the bottom plate 130 . The outer mold sleeve 110 is fixed on the bottom plate 130 and is concentric with the through hole 131 . The outer mold sleeve 110 can be supported and fixed by the bottom plate 130 .

[0031] As a preferred embodiment, please refer to Figure 2 There are a plurality of heating rings 120, each of which is fixedly arranged in the outer mold sleeve 110 from bottom to top. The outer mold assembly 100 also includes a plurality of separating rings 140, each of which is respectively arranged between two of the heating rings 120, at the bottom of the lowest heating ring 120 and at the top of the highest heating ring 120. On the one hand, the heat distribution in the outer mold sleeve 110 can be made more uniform, and on the other hand, the heat loss can be reduced.

[0032] As a preferred embodiment, please refer to Figure 2 The inner mold assembly 200 also includes an inner mold sleeve 220, which is placed in the heating ring 120. The lower mold core 210 is slidably disposed in the inner mold sleeve 220. The other ends of each of the positioning members 310 are pressed against or separated from the inner mold sleeve 220. When producing optical lenses, the softened optical glass is placed in the inner mold sleeve 220.

[0033] As a preferred embodiment, please refer to Figure 2 The inner mold assembly 200 also includes an upper mold core 230, which is arranged directly above the lower mold core 210 and can be detachably fixed on the hydraulic press. The upper mold core 230 can move up and down, and a cavity 231 is provided on the lower surface of the upper mold core 230. The upper mold core 230 and the lower mold core 210 are squeezed against each other to form an optical lens.

[0034] As a preferred embodiment, please refer to Figure 2The optical lens hot pressing molding mold further includes a telescopic driving member 400, which is fixed to the bottom of the bottom plate 130. The output shaft of the telescopic driving member 400 slides through the through hole 131 and abuts against the lower mold core 210 to drive the lower mold core 210 to move up and down. When producing an optical lens, the output shaft of the telescopic driving member 400 is retracted by manipulating the telescopic driving member 400, and the lower mold core 210 moves downward to a preset position, and the softened optical glass is placed in the inner mold sleeve 220. The upper mold core 230 moves downward and enters the inner mold sleeve 220, and extrude the optical glass together with the lower mold core 210 to form an optical lens. After the optical lens is extruded, the upper mold core 230 moves upward and moves out of the inner mold sleeve 220, and then the telescopic driving member 400 is manipulated so that the output shaft of the telescopic driving member 400 extends out and abuts against the lower mold core 210, and the upper surface of the lower mold core 210 is pushed out to the outside of the inner mold sleeve 220, so as to facilitate the removal of the optical lens on the lower mold core 210.

[0035] In order to better understand the present invention, the following Figure 1 - Figure 3 The working principle of the technical solution of the utility model is described in detail:

[0036] When the inner mold sleeve 220 is placed in the heating ring 120, the driving ring 321 is rotated in the opposite direction. Since each of the sliding posts 322 is restricted by the corresponding arc groove 3211, and each of the sliding posts 322 is fixedly connected to the corresponding positioning member 310, each of the sliding posts 322 is also restricted by the corresponding through hole 111. During the reverse rotation of the driving ring 321, each of the positioning members 310 will slide outwards along the corresponding through hole 111 synchronously, so that each of the positioning members 310 0 can be separated from each other, at the same time, each of the elastic members 323 is in a stretched state and accumulates stretching elastic potential energy, the inner mold sleeve 220 is placed in the heating ring 120, and the driving ring 321 is released. At this time, each of the elastic members 323 releases the stretching elastic potential energy and pushes each of the positioning members 310 to slide synchronously inward along the corresponding through holes 111, so that each of the positioning members 310 can be retracted to each other until they are tightly pressed against the side wall of the inner mold sleeve 220, so that the inner mold sleeve 220 and the heating ring 120 are concentric, and then The lower mold core 210 is placed in the inner mold sleeve 220, and the output shaft of the telescopic driving member 400 is retracted by operating the telescopic driving member 400, and the lower mold core 210 moves downward to a preset position, and the softened optical glass is placed in the inner mold sleeve 220, and the upper mold core 230 moves downward and enters the inner mold sleeve 220, and extrude the optical glass together with the lower mold core 210 to form an optical lens. After the optical lens is extruded, the upper mold core 230 moves upward and moves out of the inner mold sleeve 220, and then the telescopic driving member 400 is operated to move the upper mold core 230 upward and out of the inner mold sleeve 220. The driving member 400 allows the output shaft of the telescopic driving member 400 to extend and abut against the lower mold core 210, pushing the upper surface of the lower mold core 210 to the outside of the inner mold sleeve 220, so as to facilitate the removal of the optical lens on the lower mold core 210. In the utility model, the lower mold core 210 can be quickly positioned with the help of the positioning assembly 300, and it is no longer necessary to judge the concentricity of the lower mold core 210 and the heating ring 120 through naked eye observation, thereby improving the positioning accuracy of the concentricity of the lower mold core 210 and the heating ring 120.

[0037] The utility model provides an optical lens hot pressing forming mold with the following beneficial effects:

[0038] (1) The inner mold sleeve 220 is placed in the heating ring 120, and the driving ring 321 is loosened. Each of the elastic members 323 releases its tensile elastic potential energy and pushes each of the positioning members 310 to slide synchronously inward along the corresponding through holes 111, so that each of the positioning members 310 can be retracted to each other until they are tightly pressed against the side wall of the inner mold sleeve 220, thereby realizing the self-centering function of the inner mold sleeve 220;

[0039] (2) After the optical lens is extruded, the upper mold core 230 moves upward and out of the inner mold sleeve 220, and then the telescopic driving member 400 is manipulated so that the output shaft of the telescopic driving member 400 extends out and abuts against the lower mold core 210, and the upper surface of the lower mold core 210 is pushed out to the outside of the inner mold sleeve 220, so as to facilitate the removal of the optical lens on the lower mold core 210;

[0040] (3) With the help of the positioning assembly 300, the lower mold core 210 can be quickly positioned. It is no longer necessary to judge the concentricity of the lower mold core 210 and the heating ring 120 by naked eye observation, thereby improving the positioning accuracy of the concentricity of the lower mold core 210 and the heating ring 120.

[0041] 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. An optical lens hot pressing molding die, characterized in that: include: An outer mold assembly, comprising an outer mold sleeve and a heating ring fixed in the outer mold sleeve and concentric with the outer mold sleeve, wherein a plurality of through holes are opened on the side wall of the outer mold sleeve along the circumferential direction; an inner mold assembly including a lower mold core placed within the heating ring; The positioning assembly includes a plurality of positioning members and a driving member which slide through the corresponding through holes respectively. The driving member is connected to one end of each of the positioning members and is used to drive each of the positioning members to slide along the corresponding through holes so that the other end of each of the positioning members is pressed against or separated from the lower mold core.

2. The optical lens hot pressing molding die according to claim 1, characterized in that: The driving member includes a driving ring, a plurality of sliding columns and a plurality of elastic members. The driving ring is rotatably sleeved on the outer mold sleeve. A plurality of arc grooves are circumferentially provided on the driving ring. The distances from the two ends of the arc groove to the center of the driving ring are unequal. One end of each sliding column is slidably connected to the corresponding arc groove, and the other end of each sliding column is fixedly connected to one end of the corresponding positioning member. Each elastic member is sleeved on the corresponding positioning member, one end of the elastic member is fixedly connected to one end of the positioning member, and the other end of the elastic member is fixedly connected to the outer side wall of the outer mold sleeve.

3. The optical lens hot pressing molding die according to claim 2, characterized in that: The driving member further comprises a plurality of limiting caps, each of which is fixedly arranged at one end of the corresponding positioning member, and the other end of the elastic member is fixedly connected to the limiting cap.

4. The optical lens hot pressing molding die according to claim 2, characterized in that: The driving member also includes a handle, one end of which is fixedly connected to the driving ring.

5. The optical lens hot pressing molding die according to claim 2, characterized in that: The elastic member is a spring.

6. The optical lens hot pressing molding die according to claim 1, characterized in that: The outer mold assembly also includes a bottom plate, the bottom plate is provided with a through hole, and the outer mold sleeve is fixedly arranged on the bottom plate and is concentric with the through hole.

7. The optical lens hot pressing molding die according to claim 1, characterized in that: There are a plurality of heating rings, each of which is fixedly arranged in the outer mold sleeve from bottom to top at intervals. The outer mold assembly also includes a plurality of separating rings, each of which is respectively arranged between two heating rings, at the bottom of the lowest heating ring and at the top of the highest heating ring.

8. The optical lens hot pressing molding die according to claim 6, characterized in that: The inner mold assembly also includes an inner mold sleeve, which is placed in the heating ring, and the lower mold core is slidably arranged in the inner mold sleeve, and the other end of each of the positioning members is pressed against or separated from the inner mold sleeve.

9. The optical lens hot pressing molding die according to claim 8, characterized in that: The inner mold assembly also includes an upper mold core, which is arranged directly above the lower mold core and can be detachably fixed on the hydraulic press. The upper mold core can move up and down, and a mold cavity is formed on the lower surface of the upper mold core.

10. The optical lens hot pressing molding die according to claim 8, characterized in that: It also includes a telescopic driving member, which is fixed to the bottom of the base plate. The output shaft of the telescopic driving member slides through the through hole and abuts against the lower mold core to drive the lower mold core to move up and down.

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