CN214936984U

CN214936984U - Mould pressing die of aspheric lens

Info

Publication number: CN214936984U
Application number: CN202120348468.5U
Authority: CN
Inventors: 唐智; 明文
Original assignee: Qingdao Jingsenweixin Photoelectric Technology Co ltd
Current assignee: Qingdao Jingsenweixin Photoelectric Technology Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-11-30
Anticipated expiration: 2031-02-08

Abstract

The utility model provides a mould pressing die of aspheric lens, which belongs to the technical field of lens moulds, and comprises a base, wherein the inside of the base is of a cavity structure, a hollow mould column is fixed at the upper end of the base, two driving grooves are arranged at the lower end of the hollow mould column, the upper inner walls of the two driving grooves are rotatably connected with lead screws, the lower ends of the two lead screws penetrate through the upper inner wall of the base and are rotatably connected with the lower inner wall of the base, nuts are respectively connected with the circumferential surfaces of the two lead screws in a threaded manner, two first chutes are arranged on the circumferential inner wall of the hollow mould column, and the two first chutes are respectively communicated with the two driving grooves; this device easy operation, it is convenient to adjust, and the practicality is higher for the aspheric surface lens is being convenient for height-adjusting man-hour, thereby makes when the lens of different materials carries out the mould pressing, can adjust according to actual demand, makes the difficult error that produces of lens mould pressing.

Description

Mould pressing die of aspheric lens

Technical Field

The utility model belongs to the technical field of the lens mould, concretely relates to compression molding of aspheric surface lens.

Background

The aspheric glass lens is one of the most critical parts in the modern photoelectric system, and compared with the common lens, the system adopting the aspheric glass lens can obtain the optical performance which is difficult to reach by the common optical system, such as improving the relative aperture of the optical system, increasing the field angle, improving the image quality and improving the uniformity of high illumination; the system optical path is shortened, so that the system is light and small; the novel functions of micro array, integrated imaging, wave surface conversion and the like which are difficult to realize by common optical elements are realized. At present, most manufacturers of glass lenses in China adopt the traditional precision grinding-polishing technology to produce glass aspheric lenses, the time consumption is long, and generally one lens needs about 2-5 hours, so that the method is difficult to be used for mass production.

The height of the lens base of the existing mould pressing die cannot be adjusted, so that when the lenses made of different materials are subjected to mould pressing, the thicknesses of the lenses are inconsistent, errors are easy to generate, and the processing efficiency is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compression mold of aspheric surface lens, the compression mold who aims at solving among the prior art is because the lens base is because can't adjust its height for when the lens of different materials carries out the mould pressing, can make lens thickness inconsistent, produce the error easily, make machining efficiency greatly reduced's problem.

In order to achieve the above object, the utility model provides a following technical scheme:

a mould pressing mould of an aspheric lens comprises a base, wherein the inside of the base is of a cavity structure, a hollow mould column is fixed at the upper end of the base, two driving grooves are formed in the lower end of the hollow mould column, the upper inner walls of the two driving grooves are rotatably connected with lead screws, the lower ends of the two lead screws penetrate through the upper inner wall of the base and are rotatably connected with the lower inner wall of the base, nuts are respectively connected on the circumferential surfaces of the two lead screws in a threaded manner, two first sliding grooves are formed in the circumferential inner wall of the hollow mould column and are respectively communicated with the two driving grooves, connecting blocks are respectively fixed at the end parts, close to the two nuts, of the two connecting blocks, a mould disc is fixed between the end parts, close to the two connecting blocks, the mould disc is slidably connected with the circumferential inner wall of the hollow mould column, a driving mechanism is arranged in the base, and the driving mechanism is connected with the two lead screws to realize the rotation of the two lead screws, the upper end of the hollow mold column is fixed with an inverted U-shaped frame, the lower inner wall of the inverted U-shaped frame is fixed with an electric push rod, the lower end of the electric push rod is fixed with an extrusion mold, and the extrusion mold is matched with the mold disc.

As a preferable proposal of the utility model, the driving mechanism comprises a second driven gear, a first driven gear, a rotating shaft, a driving gear and a positive and negative rotating motor, two second driven gears are arranged and are respectively and fixedly connected with the circumferential surfaces of the two screw rods in the base, the first driven gear is rotationally connected between the upper inner wall and the lower inner wall of the base, the rotating shaft is fixed on the circumferential surface of the first driven gear and is meshed with the two second driven gears, and two second driven gears are respectively positioned at the left side and the right side of the rotating shaft, the positive and negative rotating motor is fixed at the upper end of the base, and the output shaft of the positive and negative rotation motor penetrates through the upper inner wall of the base and is rotatably connected with the lower inner wall of the base, the driving gear is fixed on the circumferential surface of the output shaft of the forward and reverse rotating motor and meshed with the rotating shaft.

As an optimized scheme, the circumference inner wall upper portion of hollow mould post is fixed with guide sleeve, guide sleeve and extrusion die phase-match, and the extrusion die activity is pegged graft in guide sleeve.

As a preferred scheme, the bar spacing groove has all been seted up to two around the circumference inner wall of hollow mould post, around the circumferential surface of mould dish two all be fixed with bar spacing groove assorted bar stopper, two bar stopper difference sliding connection is in two bar spacing inslots.

As an optimized scheme, two second spouts have been seted up on the circumferential surface of hollow mould post, and two second spouts communicate with two driving grooves respectively, two the end of keeping away from mutually of nut all is fixed with the reinforcing plate, and two reinforcing plates difference sliding connection in two second spouts, two the upper end of reinforcing plate all seted up threaded hole, two all seted up with screw hole assorted thread groove about the upper end of base equal threaded connection has the bolt in the thread hole, and two bottom difference threaded connection of bolt is to two thread grooves.

As an optimal scheme, two T shape spacing groove, two have all been seted up to the inner wall around the drive groove both ends all are fixed with around the nut with T shape spacing groove assorted T shape stopper, a plurality of T shape stopper difference sliding connection is in a plurality of T shape spacing inslot.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the scheme, the aspheric lens is placed in the mold disc, then the forward and reverse rotating motors are started, the output shafts of the forward and reverse rotating motors drive the bolts to rotate, the bolts drive the rotating shafts meshed with the bolts to rotate, so that the rotating shafts drive the two second driven gears to rotate in the same direction, the two lead screws are rotated, nuts on the surfaces of the two lead screws perform vertical linear motion at the moment, the mold disc is driven to move up and down through the connecting blocks, the position of the aspheric lens in the mold disc can be adjusted, after the adjustment is completed, the forward and reverse rotating motors are closed, the electric push rods are started, the extrusion mold is driven to press downwards through the thin rods, and the aspheric lens is subjected to mold pressing processing, so that the height of the aspheric lens is convenient to adjust during processing, and therefore, when the lenses made of different materials are subjected to mold pressing, the adjustment can be carried out according to actual requirements, so that the mould pressing of the lens is not easy to generate errors and the effect is better.

2. After the adjustment of the die disc is completed, the two bolts are respectively connected into the two threaded holes in a threaded manner and respectively extend into the two threaded grooves, the reinforcing plate is further fastened, and the nut is fastened because the reinforcing plate and the nut are fixed, so that the die disc is more stable during die pressing, is not easy to shake and has higher precision.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective view of the present invention;

FIG. 2 is a main sectional view of the present invention;

fig. 3 is a sectional view of the present invention.

In the figure: 1. a base; 2. a hollow mold column; 3. a U-shaped frame is inverted; 4. an electric push rod; 5. extruding the die; 6. a positive and negative rotation motor; 7. a reinforcing plate; 8. a bolt; 9. a second driven gear; 10. a screw rod; 11. a first driven gear; 12. a rotating shaft; 13. a guide sleeve; 14. a strip-shaped limiting groove; 15. a mold plate; 16. a drive slot; 17. a nut; 18. connecting blocks; 19. a first chute; 20. a drive gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides the following technical solutions:

a mould pressing mould of an aspheric lens comprises a base 1, the interior of the base 1 is of a cavity structure, a hollow mould column 2 is fixed at the upper end of the base 1, two driving grooves 16 are formed at the lower end of the hollow mould column 2, the upper inner walls of the two driving grooves 16 are rotatably connected with screw rods 10, the lower ends of the two screw rods 10 penetrate through the upper inner wall of the base 1 and are rotatably connected with the lower inner wall of the base 1, nuts 17 are respectively and threadedly connected on the circumferential surfaces of the two screw rods 10, two first sliding grooves 19 are formed in the circumferential inner wall of the hollow mould column 2, the two first sliding grooves 19 are respectively communicated with the two driving grooves 16, connecting blocks 18 are respectively fixed at the adjacent ends of the two nuts 17, a mould disc 15 is fixed between the adjacent ends of the two connecting blocks 18, the mould disc 15 is slidably connected with the circumferential inner wall of the hollow mould column 2, a driving mechanism is arranged in the base 1, the driving mechanism is connected with the two screw rods 10 to realize the rotation of the driving mechanism, the driving mechanism comprises two second driven gears 9, a first driven gear 11, a rotating shaft 12, two driving gears 20 and a forward and reverse rotation motor 6, the two second driven gears 9 are respectively and fixedly connected with the circumferential surfaces of the two screw rods 10 positioned in the base 1, the first driven gear 11 is rotatably connected between the upper inner wall and the lower inner wall of the base 1, the rotating shaft 12 is fixed on the circumferential surface of the first driven gear 11, the rotating shaft 12 is meshed with the two second driven gears 9, the two second driven gears 9 are respectively positioned on the left side and the right side of the rotating shaft 12, the forward and reverse rotation motor 6 is fixed at the upper end of the base 1, the output shaft of the forward and reverse rotation motor 6 penetrates through the upper inner wall of the base 1 and is rotatably connected with the lower inner wall of the base 1, and the driving gears 20 are fixed on the circumferential surfaces of the output shaft of the forward and reverse rotation motor 6, and the driving gear 20 is meshed with the rotating shaft 12; an inverted U-shaped frame 3 is fixed at the upper end of the hollow mold column 2, an electric push rod 4 is fixed on the lower inner wall of the inverted U-shaped frame 3, an extrusion mold 5 is fixed at the lower end of the electric push rod 4, and the extrusion mold 5 is matched with the mold disc 15.

In the embodiment of the utility model, the device is placed on a workbench through a base 1, aspheric lenses are processed in a hollow mold column 2, when the lenses are needed to be processed, the lenses are placed in a mold disc 15 in the hollow mold column 2, when the height of the lenses is needed to be adjusted, by starting a forward and reverse motor 6, the forward and reverse motor 6 can select different models according to actual needs, for example, the model is TCHV32-1500-3-10S, the forward and reverse motor 6 is electrically connected with an external power supply, so that an output shaft of the forward and reverse motor 6 drives a bolt 8 to rotate, the bolt 8 drives a rotating shaft 12 engaged with the bolt to rotate, the rotating shaft 12 drives two second driven gears 9 to rotate in the same direction, thereby two screw rods 10 rotate, as T-shaped limit blocks are fixed at the front and rear ends of a nut 17 to slide in T-shaped limit grooves (not shown in the figure), the position of the nut 17 is limited and can only do up-and-down linear motion, at the moment, the nut 17 on the surfaces of the two screw rods 10 do up-and-down linear motion, the connecting block 18 drives the die disc 15 to move up and down, so that the position of the aspheric lens in the die disc 15 can be adjusted, after the adjustment is completed, the nut 17 is connected into a threaded hole and a threaded groove through a bolt 8 in a threaded manner, the nut 17 is further reinforced, the nut cannot shake after the adjustment is completed and is higher in stability, then the forward and reverse rotating motor 6 is closed and the electric push rod 4 is started, the electric push rod 4 can select different models according to actual requirements, for example, the model is NKLA22B, the electric push rod 4 is electrically connected with an external power supply, the extrusion die 5 is driven to press through a thin rod, so that the aspheric lens is subjected to die pressing processing, because the moving distance of the extrusion die 5 is fixed, the positions of the die disc 15 are different, make the thickness behind the lens moulding-die, this device easy operation, it is convenient to adjust, and the practicality is higher for the aspheric surface lens is being convenient for height-adjusting man-hour, thereby makes when the lens of different materials carries out the mould pressing, can adjust according to actual demand, makes the difficult error that produces of lens mould pressing, and the effect is better, when needing to explain: for those skilled in the art, the electric push rod 4 and the forward and reverse rotation motor 6 are all in the prior art, and will not be described in detail.

Referring to fig. 2, a guide sleeve 13 is fixed on the upper part of the inner circumferential wall of the hollow mold column 2, the guide sleeve 13 is matched with the extrusion mold 5, and the extrusion mold 5 is movably inserted into the guide sleeve 13; will be about to when moulding pressing the lens when extrusion die 5 moves down, at first pass guide sleeve 13 for more accurate when extrusion die 5 moves down, can be accurate insert mould dish 15 in, more accurate to the lens moulding pressing.

Referring to fig. 2 specifically, the front and rear parts of the circumferential inner wall of the hollow mold column 2 are both provided with a strip-shaped limiting groove 14, the front and rear parts of the circumferential surface of the mold disc 15 are both fixed with strip-shaped limiting blocks matched with the strip-shaped limiting grooves 14, and the two strip-shaped limiting blocks are respectively connected in the two strip-shaped limiting grooves 14 in a sliding manner; when the mould dish 15 reciprocated, drive the bar stopper and slide in bar spacing groove 14 for mould dish 15 is more stable, is difficult for rocking.

Referring to fig. 1 and 2 specifically, two second sliding grooves are formed in the circumferential surface of the hollow mold column 2 and are respectively communicated with two driving grooves 16, reinforcing plates 7 are fixed to the far ends of two nuts 17, the two reinforcing plates 7 are respectively connected into the two second sliding grooves in a sliding manner, threaded holes are formed in the upper ends of the two reinforcing plates 7, threaded grooves matched with the threaded holes are formed in the left portion and the right portion of the upper end of the base 1, bolts 8 are connected into the two threaded holes in a threaded manner, and the bottom ends of the two bolts 8 are respectively connected into the two threaded grooves in a threaded manner; after 15 adjustments of mould dish are accomplished, through two bolt 8 difference threaded connection to two screwed holes and extend to two thread grooves respectively in, further fasten reinforcing plate 7, because fixed between reinforcing plate 7 and the nut 17 for nut 17 is fastened, thereby makes mould dish 15 more stable when the mould pressing, is difficult for rocking, and the precision is higher.

Specifically, the front and rear inner walls of the two driving grooves 16 are both provided with T-shaped limiting grooves, the front and rear ends of the two nuts 17 are both fixed with T-shaped limiting blocks matched with the T-shaped limiting grooves, and the T-shaped limiting blocks are respectively connected in the T-shaped limiting grooves in a sliding manner (not shown in the figure); through a plurality of T shape stopper difference sliding connection in a plurality of T shape spacing inslots for the position of nut 17 is injectd, thereby is more stable when making screw 10 rotate nut 17 and make up-and-down linear motion, is difficult for rocking, thereby is more stable when driving mould dish 15 and removing.

The utility model discloses a theory of operation and use flow: when the aspheric lens needs to be processed, firstly, the lens is placed in a mold disc 15 in a hollow mold column 2, when the height of the lens needs to be adjusted, a forward and reverse motor 6 is started, an output shaft of the forward and reverse motor 6 drives a bolt 8 to rotate, the bolt 8 drives a rotating shaft 12 meshed with the bolt to rotate, the rotating shaft 12 drives two second driven gears 9 to rotate in the same direction, so that two screw rods 10 rotate, nuts 17 on the surfaces of the two screw rods 10 do vertical linear motion, the mold disc 15 is driven to move up and down through a connecting block 18, the position of the aspheric lens in the mold disc 15 can be adjusted, after the adjustment is completed, the aspheric lens is connected into a threaded hole and a threaded groove through the bolt 8 in a threaded manner, the nuts 17 are further reinforced, the aspheric lens cannot shake after the adjustment is completed, the stability is higher, then the forward and reverse motor 6 is turned off, and the electric push rod 4 is started, drive extrusion die 5 through its pin down for the aspheric surface lens carries out the mould pressing process, because the distance that extrusion die 5 removed is fixed, through mould dish 15 position difference, make the thickness behind the lens moulding-die, this device easy operation, it is convenient to adjust, and the practicality is higher, makes the aspheric surface lens be convenient for adjust the height with man-hour, thereby when making the lens at different materials carry out the mould pressing, can adjust according to actual demand, makes the difficult production error of lens mould pressing.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a compression molding of aspherical mirror piece which characterized in that: the die comprises a base (1), the inside of the base (1) is of a cavity structure, a hollow die column (2) is fixed at the upper end of the base (1), two driving grooves (16) are formed in the lower end of the hollow die column (2), the upper inner walls of the two driving grooves (16) are rotatably connected with lead screws (10), the lower ends of the two lead screws (10) penetrate through the upper inner wall of the base (1) and are rotatably connected with the lower inner wall of the base (1), nuts (17) are rotatably connected on the circumferential surfaces of the two lead screws (10), two first sliding grooves (19) are formed in the circumferential inner wall of the hollow die column (2), the two first sliding grooves (19) are respectively communicated with the two driving grooves (16), connecting blocks (18) are fixed at the end parts, which the two nuts (17) are close to, and a die disc (15) is fixed between the end parts, which the connecting blocks (18) are close to, mould dish (15) sliding connection is in the circumference inner wall of hollow mould post (2), be equipped with actuating mechanism in base (1), all be connected in order to realize its rotation between actuating mechanism and two lead screws (10), the upper end of hollow mould post (2) is fixed with frame of falling U (3), the lower inner wall of frame of falling U (3) is fixed with electric putter (4), the lower extreme of electric putter (4) is fixed with extrusion die (5), extrusion die (5) and mould dish (15) phase-match.

2. The molding die for aspheric lens as claimed in claim 1, wherein: the driving mechanism comprises two second driven gears (9), two first driven gears (11), two rotating shafts (12), a driving gear (20) and a forward and reverse motor (6), the second driven gears (9) are fixedly connected to the circumferential surfaces of the two screw rods (10) in the base (1) respectively, the first driven gears (11) are rotatably connected between the upper inner wall and the lower inner wall of the base (1), the rotating shafts (12) are fixed to the circumferential surfaces of the first driven gears (11), the rotating shafts (12) are meshed with the two second driven gears (9), the two second driven gears (9) are respectively positioned at the left side and the right side of the rotating shafts (12), the forward and reverse motor (6) is fixed at the upper end of the base (1), and the output shafts of the forward and reverse motor (6) penetrate through the upper inner wall of the base (1) and are rotatably connected to the lower inner wall of the base (1), the driving gear (20) is fixed on the circumferential surface of an output shaft of the forward and reverse rotation motor (6), and the driving gear (20) is meshed with the rotating shaft (12).

3. The molding die for aspheric lens as claimed in claim 2, wherein: the upper part of the circumferential inner wall of the hollow mold column (2) is fixedly provided with a guide sleeve (13), the guide sleeve (13) is matched with the extrusion mold (5), and the extrusion mold (5) is movably inserted into the guide sleeve (13).

4. The molding die for aspheric lens as claimed in claim 3, wherein: bar spacing groove (14) have all been seted up in two portions around the circumference inner wall of hollow mould post (2), two portions all are fixed with around the circumferential surface of mould dish (15) with bar spacing groove (14) assorted bar stopper, two bar stopper difference sliding connection is in two bar spacing grooves (14).

5. The molding die for aspheric lens as claimed in claim 4, wherein: two second chutes are formed in the circumferential surface of the hollow mold column (2), and the two second chutes are respectively communicated with the two driving grooves (16), two reinforcing plates (7) are fixed to the ends, away from the nuts (17), of the nuts, and the two reinforcing plates (7) are respectively connected in the two second chutes in a sliding mode, two threaded holes are formed in the upper ends of the reinforcing plates (7), threaded grooves matched with the threaded holes are formed in the left portion and the right portion of the upper end of the base (1), two bolts (8) are connected in the threaded holes in a uniform threaded mode, and the bottoms of the two bolts (8) are respectively connected in the two threaded grooves in a threaded mode.

6. The molding die for aspheric lens as claimed in claim 5, wherein: t-shaped limiting grooves are formed in the front inner wall and the rear inner wall of the driving groove (16), T-shaped limiting blocks matched with the T-shaped limiting grooves are fixed at the front end and the rear end of the nut (17), and the T-shaped limiting blocks are connected into the T-shaped limiting grooves in a sliding mode.