阅读说明：本技术 一种非球面透镜用模压机构 (Die pressing mechanism for aspheric lens ) 是由 姚祖义 李耀春 金小伟 于 2019-11-26 设计创作，主要内容包括：本发明提供了一种非球面透镜用模压机构,包括：工作台,设有供升降臂伸缩的通孔；下模机构,设于工作台上,下方设有升降臂,通过驱动机构驱动下模机构的升降；下模机构由下至上依次设有固定板一、下隔热板、固定板二和下模板,固定板二和下模板可拆卸固定,下模板采用钨钢材料制成；上模机构,设于下模机构的正上方且与顶板固定,下模机构由上往下依次设有上固定板一、上隔热板、上固定板二和上模板,上固定板二和上模板可拆卸固定,上模板内设有模腔和排气通道,排气通道为T型,该排气通道与模腔联通。本发明具有生产效果好的特点。(The invention provides a molding mechanism for an aspherical lens, comprising: the workbench is provided with a through hole for the telescopic lifting arm; the lower die mechanism is arranged on the workbench, a lifting arm is arranged below the lower die mechanism, and the lower die mechanism is driven to lift through a driving mechanism; the lower die mechanism is sequentially provided with a first fixing plate, a lower heat insulation plate, a second fixing plate and a lower die plate from bottom to top, the second fixing plate and the lower die plate are detachably fixed, and the lower die plate is made of tungsten steel materials; the upper die mechanism is arranged right above the lower die mechanism and fixed with the top plate, the lower die mechanism is sequentially provided with a first upper fixing plate, an upper heat insulation plate, a second upper fixing plate and an upper die plate from top to bottom, the second upper fixing plate and the upper die plate are detachably fixed, a die cavity and an exhaust channel are arranged in the upper die plate, the exhaust channel is T-shaped, and the exhaust channel is communicated with the die cavity. The invention has the characteristic of good production effect.)

1. A molding mechanism for an aspherical lens, comprising:

the workbench (10) is provided with a through hole for the telescopic lifting arm;

the lower die mechanism (20) is arranged on the workbench (10), a lifting arm is arranged below the lower die mechanism, and the lower die mechanism (20) is driven to lift through a driving mechanism; the lower die mechanism (20) is sequentially provided with a first fixing plate (21), a lower heat insulation plate (22), a second fixing plate (23) and a lower die plate (24) from bottom to top, the second fixing plate (23) and the lower die plate (24) are detachably fixed, and the lower die plate (24) is made of tungsten steel materials;

the upper die mechanism (30) is arranged right above the lower die mechanism (20) and is fixed with the top plate, the lower die mechanism is sequentially provided with a first upper fixing plate (31), an upper heat insulation plate (32), a second upper fixing plate (33) and an upper die plate (34) from top to bottom, the second upper fixing plate (33) and the upper die plate (34) are detachably fixed, a die cavity (342) and an exhaust channel (341) are arranged in the upper die plate (34), the exhaust channel (341) is T-shaped, and the exhaust channel (341) is communicated with the die cavity (342).

2. The molding mechanism for aspheric lens as claimed in claim 1, wherein the exhaust channel (341) comprises a first exhaust channel (3411) and a second exhaust channel (3412), the first exhaust channel (3411) and the second exhaust channel (3412) are vertically disposed, one end of the first exhaust channel (3411) is communicated with the center of the mold cavity (341), the other end extends to the top of the upper mold plate (34), one end of the second exhaust channel (3412) is communicated with the first exhaust channel (3411), and the other end extends to the outside of the sidewall of the upper mold plate (34).

3. The molding mechanism for an aspherical lens as defined in claim 2, wherein the first exhaust channel (3411) includes a lower channel (344) and an upper channel (343), the second exhaust channel (3412) is connected to the upper channel (343), the diameter of the lower channel (344) is a, the diameter of the upper channel (343) is b, the diameter of the second exhaust channel (3412) is c, and the number relationship is satisfied: a < b < c.

4. The molding mechanism for aspherical lenses as defined in claim 3, wherein the diameter of the second exhaust channel (3412) is 6.5mm, the diameter of the upper channel (343) is 1mm, and the diameter of the lower channel (344) is 0.3 mm.

5. The molding mechanism for aspheric lens as claimed in claim 1, wherein the lower mold plate (24) is circular and has fixing portions (241) at both ends, the fixing portions (241) have notches, and the end of the second fixing plate (23) has screw holes corresponding to the notches.

6. The molding mechanism for aspherical lenses as defined in claim 1, wherein the driving mechanism is a cylinder, and an output shaft of the cylinder is connected to the first fixing plate (21).

Technical Field

The invention belongs to the technical field of molds, and relates to a molding mechanism for an aspheric lens.

Background

Aspheric lenses are widely used for lighting of vehicle lamps, and projection lighting systems commonly used in vehicle lamps generally include a light source, a reflector, a light shielding plate and a lens. The reflector is ellipsoidal, the light-emitting center of the light source is arranged at the near focus of the ellipsoidal reflector, and light rays emitted by the light source are converged near the far focus of the ellipsoidal reflector after being reflected by the ellipsoidal reflector.

The process flow for preparing the aspheric lens comprises the following steps: 1. cutting a wire rod material with a certain length into block raw materials with specified sizes; 2. and then the non-spherical lens is formed by a mould after being softened at high temperature in a rotary furnace and is cooled and shaped by a cooling box to obtain the non-spherical lens.

The existing molding mechanism for the aspheric lens is inconvenient to operate basically, the production and processing time is long, the surface of the produced aspheric lens is bubbled or uneven, and the yield is low.

In summary, in order to solve the structural defects of the existing molding mechanism for the aspheric lens, the invention designs the molding mechanism for the aspheric lens, which has a reasonable structure and a good production effect.

Disclosure of Invention

The invention provides the molding mechanism for the aspheric lens, which has a reasonable structure and a good production effect and solves the problems in the prior art.

The purpose of the invention can be realized by the following technical scheme:

a molding mechanism for an aspherical lens, comprising:

the workbench is provided with a through hole for the telescopic lifting arm;

the lower die mechanism is arranged on the workbench, a lifting arm is arranged below the lower die mechanism, and the lower die mechanism is driven to lift through a driving mechanism; the lower die mechanism is sequentially provided with a first fixing plate, a lower heat insulation plate, a second fixing plate and a lower die plate from bottom to top, the second fixing plate and the lower die plate are detachably fixed, and the lower die plate is made of tungsten steel materials;

the upper die mechanism is arranged right above the lower die mechanism and fixed with the top plate, the lower die mechanism is sequentially provided with a first upper fixing plate, an upper heat insulation plate, a second upper fixing plate and an upper die plate from top to bottom, the second upper fixing plate and the upper die plate are detachably fixed, a die cavity and an exhaust channel are arranged in the upper die plate, the exhaust channel is T-shaped, and the exhaust channel is communicated with the die cavity.

As a further improvement of the scheme, the exhaust channel comprises a first exhaust channel and a second exhaust channel, the first exhaust channel and the second exhaust channel are vertically arranged, one end of the first exhaust channel is communicated with the center of the die cavity, the other end of the first exhaust channel extends to the top of the upper die plate, one end of the second exhaust channel is communicated with the first exhaust channel, and the other end of the second exhaust channel extends out of the side wall of the upper die plate.

As a further improvement of the scheme, the first exhaust channel comprises a lower channel and an upper channel, the second exhaust channel is connected with the upper channel, the diameter of the lower channel is a, the diameter of the upper channel is b, the diameter of the second exhaust channel is c, and the quantity relation is satisfied: a < b < c.

As a further improvement of the scheme, the diameter of the second exhaust channel is 6.5mm, the diameter of the upper channel is 1mm, and the diameter of the lower channel is 0.3 mm.

As a further improvement of the scheme, the lower template is circular, fixing parts are arranged at two ends of the lower template, a notch is formed in each fixing part, and a threaded hole corresponding to the notch is formed in the end part of the second fixing plate.

As a further improvement of the scheme, the driving mechanism is an air cylinder, and an output shaft of the air cylinder is connected with the first fixing plate.

Compared with the prior art, the die pressing mechanism for the aspheric lens is reasonable in structural arrangement, the lower die plate and the upper die plate are made of tungsten steel and matched with the lifting arm and the workbench, and the service life of the whole die is prolonged by combining the wear resistance of the tungsten steel; the arrangement of the heat insulation plate further prolongs the service life of the whole die; the exhaust channel is arranged, so that when the mold is produced, gas is exhausted outwards after being heated and expanded, the gas is prevented from being accumulated in the mold cavity to influence the flatness of the surface of the aspheric lens, and the quality and the yield of the final aspheric lens are ensured.

Drawings

Fig. 1 is a schematic structural view of a molding mechanism for an aspherical lens according to the present invention.

FIG. 2 is a schematic structural view of an upper mold plate of the molding mechanism for an aspherical lens according to the present invention.

In the figure, 10-a workbench, 20-a lower die mechanism, 21-a first fixing plate, 22-a lower heat insulation plate, 23-a second fixing plate, 24-a lower template, 241-a fixing part, 30-an upper die mechanism, 31-a first upper fixing plate, 32-an upper heat insulation plate, 33-a second upper fixing plate, 34-an upper template, 341-an exhaust channel, 3411-a first exhaust channel, 3412-a second exhaust channel, 342-a die cavity, 343-an upper channel and 344-a lower channel.

Detailed Description

The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.

As shown in fig. 1 and 2, the present molding mechanism for an aspherical lens includes:

a working table 10 provided with a through hole for the telescopic movement of the lifting arm;

the lower die mechanism 20 is arranged on the workbench 10, a lifting arm is arranged below the lower die mechanism, and the lower die mechanism 20 is driven to lift by a driving mechanism; the lower die mechanism 20 is sequentially provided with a first fixing plate 21, a lower heat insulation plate 22, a second fixing plate 23 and a lower die plate 24 from bottom to top, the second fixing plate 23 and the lower die plate 24 are detachably fixed, and the lower die plate 24 is made of tungsten steel materials;

the upper die mechanism 30 is arranged right above the lower die mechanism 20 and fixed with the top plate, the lower die mechanism is sequentially provided with a first upper fixing plate 31, an upper heat insulation plate 32, a second upper fixing plate 33 and an upper die plate 34 from top to bottom, the second upper fixing plate 33 and the upper die plate 34 are detachably fixed, a die cavity 342 and an exhaust channel 341 are arranged in the upper die plate 34, the exhaust channel 341 is T-shaped, and the exhaust channel 341 is communicated with the die cavity 342.

Aspheric lenses are widely used for lighting of vehicle lamps, and projection lighting systems commonly used in vehicle lamps generally include a light source, a reflector, a light shielding plate and a lens. The reflector is ellipsoidal, the light-emitting center of the light source is arranged at the near focus of the ellipsoidal reflector, and light rays emitted by the light source are converged near the far focus of the ellipsoidal reflector after being reflected by the ellipsoidal reflector.

The existing process flow for preparing the aspheric lens is as follows: 1. cutting a wire rod material with a certain length into block raw materials with specified sizes; 2. and then the non-spherical lens is formed by a mould after being softened at high temperature in a rotary furnace and is cooled and shaped by a cooling box to obtain the non-spherical lens.

The existing molding mechanism for the aspheric lens is inconvenient to operate basically, the production and processing time is long, the surface of the produced aspheric lens is bubbled or uneven, and the yield is low.

Therefore, the invention designs a die pressing mechanism for the aspheric lens, the lower template 24 and the upper template 34 are made of tungsten steel, and are matched with the lifting arm and the workbench 10 for use, and the service life of the whole die is prolonged by combining the wear resistance of the tungsten steel; because the temperature of the raw material softened at high temperature from the rotary furnace is higher, the service life of the whole die is further prolonged by arranging the heat insulation plates in the lower die mechanism 20 and the upper die mechanism 30.

In operation, the raw material in the rotary furnace is placed on the lower template 24 through the clamp, and is just opposite to the upper die mechanism 30 above, and the lifting arm drives the lower die mechanism 20 to ascend, so that the raw material is molded in the die cavity 342.

Compared with the prior art, this die pressing mechanism for aspherical lens is equipped with exhaust passage 341 through cope match-plate pattern 34, has effectively avoided because the entering of air, and the surface that aspherical lens and die cavity 342 contacted produces bubble or surperficial unevenness at compression molding's in-process, and the air circulates to the outside through exhaust passage, has promoted the yield, and the aspherical lens surface that finally makes is level and smooth.

As a further preferred embodiment, the exhaust channel 341 includes a first exhaust channel 3411 and a second exhaust channel 3412, the first exhaust channel 3411 and the second exhaust channel 3412 are vertically disposed, one end of the first exhaust channel 3411 is communicated with the central position of the cavity 342, the other end extends to the top of the upper mold plate 34, one end of the second exhaust channel 3412 is communicated with the first exhaust channel 3411, and the other end extends to the outside of the sidewall of the upper mold plate 34.

In this embodiment, the exhaust channel 341 is disposed to facilitate the processing and molding of the aspheric lens, and during the mold production, the gas is expanded by heating and then exhausted outward, so as to prevent the gas from accumulating in the mold cavity 342 to affect the flatness of the aspheric lens surface, and ensure the quality and yield of the final aspheric lens.

As a further preferred embodiment, the first exhaust channel 3411 comprises a lower channel 344 and an upper channel 343, and the second exhaust channel 3412 is connected to the upper channel 343, the diameter of the lower channel 344 is a, the diameter of the upper channel 343 is b, and the diameter of the second exhaust channel 3412 is c, which satisfy the number relation: a < b < c.

In the present embodiment, the diameter of the second exhaust passage 3412 is c, specifically 6.5 mm; the diameter of the upper channel 343 is b, in particular 1 mm; the diameter of the lower channel 344 is a, in particular 0.3 mm. So set up, be favorable to the smooth discharge of air, because lower passageway 344 and die cavity 342 UNICOM, the aperture sets up little easy air escape, and can not leave the pit again on high temperature softening's aspheric surface lens surface. The diameter of the air flowing outwards is gradually increased, so that smooth air discharge is facilitated, the exhaust duct is not easy to block, and if the exhaust duct is blocked, the blockage can be discharged only by aligning an air gun through the exhaust duct II 3412 communicated with the outside.

In a further preferred embodiment, the lower plate 24 is circular, and the fixing portions 241 are provided at both ends thereof, the fixing portions 241 are provided with notches, and the end portions of the second fixing plates 23 are provided with screw holes corresponding to the notches.

In this embodiment, the second fixing plate 23 and the lower template 24 are detachably fixed by bolts passing through the notches and the threaded holes.

Specifically, the second upper fixing plate 33 and the upper die plate 34 are detachably fixed, and the fixing mode of the two fixing plates is set according to the second fixing plate 23 and the lower die plate 24.

The setting of above-mentioned structure makes and still can keep the holistic stability of mould in frequent production process, avoids taking place to become flexible between the part and influences the production quality of product, also can guarantee the security of production, the equipment is convenient simultaneously.

As a further preferred embodiment, the driving mechanism is a cylinder, and an output shaft of the cylinder is connected with the first fixing plate 21.

In this embodiment, the cylinder drives the lower mold mechanism 20 to ascend or descend, so that the operation is convenient, the production is stable, and the product quality is ensured.

The die pressing mechanism for the aspheric lens is reasonable in structure arrangement, the lower die plate 24 and the upper die plate 34 are made of tungsten steel and matched with the lifting arm and the workbench 10 for use, and the service life of the whole die is prolonged by combining the wear resistance of the tungsten steel; the arrangement of the heat insulation plate further prolongs the service life of the whole die; the exhaust passage 341 is arranged, so that when the mold is produced, the gas is heated and expanded and then is exhausted outwards, the gas is prevented from being accumulated in the mold cavity 342 to influence the flatness of the surface of the aspheric lens, and the quality and the yield of the final aspheric lens are ensured.

What has been described herein is merely a preferred embodiment of the invention, and the scope of the invention is not limited thereto. Modifications, additions, or substitutions by those skilled in the art to the specific embodiments described herein are intended to be within the scope of the invention.