CN218701129U - Double-color lens extrusion molding die - Google Patents

Abstract

The utility model provides a double-colored lens extrusion moulding mould for extrude and the design operation to double-colored sizing material, form the target formed body. The double-color lens extrusion molding die comprises an extrusion die, a shaping die and a heating device. The extrusion die is used for extruding the bicolor sizing material to form a preformed body. The shaping mold is used for receiving the pre-shaped body and carrying out shaping operation on the pre-shaped body to form the target shaped body. The heating device is arranged behind the shaping mold and used for heating the target forming body. The utility model provides a pair of double-colored lens extrusion moulding mould through add heating device at the stock mould rear, heats the operation to the target formed body to in shape and the curvature to the target formed body adjust, can let the target formed body slowly cool off simultaneously, reduce the internal stress, promote the anti fracture ability of the target formed body, improve the product shaping rate.

Description

Double-color lens extrusion molding die

Technical Field

The utility model relates to a material extrusion moulding technical field, concretely relates to double-colored lens extrusion moulding mould.

Background

With the continuous breakthrough of the related technologies of the LED, the PC material has the characteristics of insulation, light weight, uniform light emission, excellent heat dissipation, safety and the like, is widely applied to the LED lighting products formed by extrusion, and has continuous visible market application potential in home lighting, office lighting and outdoor lighting. The extrusion lens with a complex structure is more and more widely applied to various lamp products, and the market demands of image panel lamps, wall washing lamps, outdoor tri-proof lamps, advertising lamps, linearity and the like grow rapidly. Most of strip-shaped lenses are various single-color transparent lenses formed by adopting an extrusion molding process at present, the light-emitting effect and the angle of the single-color lenses have certain limitations relatively, and the single-color lenses are not suitable for some lamps with smaller angles and higher requirements on light-emitting uniformity. The double-color lens can realize different light-emitting effects, but the molding is relatively complex, and the molding rate of the existing double-color lens mold is low, so that the manufacturing cost is high.

Disclosure of Invention

In view of this, in order to realize some special luminous angles and luminous effect, the utility model aims to provide a double-colored lens extrusion moulding mould of configuration optimization improves the shaping rate of double-colored lens.

In order to realize the utility model discloses the purpose provides a double-colored lens extrusion moulding mould for extrude and the design operation to double-colored sizing material, form the target formed body. The double-color lens extrusion molding die comprises an extrusion die, a shaping die and a heating device. The extrusion die is used for extruding the bicolor sizing material to form a preformed body. The shaping mold is used for receiving the pre-shaped body and carrying out shaping operation on the pre-shaped body to form the target shaped body. The heating device is arranged behind the shaping mold and used for heating the target forming body.

Optionally, the extrusion die comprises a neck, a first flow splitter plate, a second flow splitter plate, a constriction plate, and a die plate. The machine neck, the first splitter plate, the second splitter plate, the contraction plate and the mouth template are sequentially arranged from front to back. And a second shunt hole is formed in the second shunt plate. The second splitter plate is also provided with a second feed hole. The shrink plate is internally provided with a first shrink hole. The second feeding hole penetrates from the top of the second splitter plate to the first contraction hole.

Optionally, the extrusion die further comprises a fixing member. The fixing piece is wrapped on the outer sides of the first splitter plate, the second splitter plate and the contraction plate so as to fixedly connect the first splitter plate, the second splitter plate and the contraction plate together.

Optionally, a second shrink hole is further provided in the shrink plate. The second contraction hole is arranged below the first contraction hole. The aperture of the second constricting orifice is smaller than the aperture of the second flow-dividing orifice.

Optionally, the discharge end of the opening template is provided with a discharge opening. And extruding the bicolor sizing material from the discharge port to form the preformed body. The discharge port comprises a first sizing material outlet and a second sizing material outlet. The first sizing material outlet and the second sizing material outlet are of an integrated structure.

Optionally, the first sizing outlet is of a rectangular configuration. The upper section of the second sizing material outlet is of a rectangular structure and forms a step shape with the first sizing material outlet. And two clamping feet extend downwards from the lower section of the second sizing material outlet. The two clamping feet are oppositely bent inwards. An included angle is formed between the inner side of the clamping foot and the upper section of the second sizing material outlet.

Optionally, the included angle is in the range of 60-80 degrees.

Optionally, the extrusion die further comprises a temperature control unit. The temperature control unit is coated on the outer side of the die plate and used for controlling the temperature in the die plate.

Optionally, the temperature control unit comprises a heating ring and three heating elements. The heating ring is coated on the periphery of the die plate. Three heating member sets up on the heating coil, and be located respectively the left surface, the right flank and the downside of mouthful template are in order to follow the mouthful template the left surface the right flank reaches the downside is controlled respectively temperature in the mouthful template.

Optionally, the extrusion die further comprises a fixing bolt. The fixing bolt sequentially penetrates through the opening template, the contraction plate, the second splitter plate, the first splitter plate and the machine neck so as to fix the machine neck, the first splitter plate, the second splitter plate, the contraction plate and the opening template together.

The utility model provides a pair of double-colored lens extrusion moulding mould through add heating device at the stock mould rear, heats the operation to the target formed body to in shape and the curvature to the target formed body adjust, can let the target formed body slowly cool off simultaneously, reduce the internal stress, promote the anti fracture ability of the target formed body, improve the product shaping rate. In addition, through set up the second feed port at second reposition of redundant personnel top to make two kinds of sizing materials get into the extrusion die from machine neck and second feed port respectively, thereby ensure that the each partial ejection of compact of double-colored lens is complete, promote the precision of double-colored lens molding dimension.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.

Fig. 1 is the utility model provides a pair of double-colored lens extrusion moulding mould's schematic structure diagram.

Fig. 2 is an exploded view of the two-color lens extrusion molding die shown in fig. 1.

Fig. 3 is a schematic structural view of a discharge hole of the middle hole template of the double-color lens extrusion molding grinding tool.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the described embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a two-color lens extrusion molding die 900 for extruding and molding two-color glue to form a target molded body. The two-color lens extrusion molding die 900 includes an extrusion die 100, a setting die 200, and a heating device 300. The extrusion die 100 is used to perform an extrusion operation on a two-color compound to form a preform. The shaping mold 200 is used for receiving the preform and performing shaping operation on the preform to form a target shaped body. The heating device 300 is disposed behind the shaping mold 200, and is configured to heat the target shaped body, so as to adjust the shape of the target shaped body, and meanwhile, the target shaped body can be slowly cooled, so as to reduce the internal stress and improve the cracking resistance of the target shaped body. In the embodiment, the heating device is a cylindrical ceramic heating pipe, the length of the heating pipe is 500-600mm, a temperature control device is connected to the outside of the ceramic heating pipe, bending adjustment of a product is achieved through different temperature settings, and generation of internal stress of the product is reduced. The target molded body is a bicolor lens product. The double-color sizing material comprises a sizing material A and a sizing material B, wherein the sizing material A and the sizing material B are both molten PC (polycarbonate) materials, and a diffusion matte surface is added into the sizing material B, so that one surface of a finished lens can emit light more softly and uniformly. In other embodiments, the compound a and the compound B may be other materials such as melted acrylic. Through the utility model provides a double-colored lens extrusion moulding mould 900 combines the reasonable collocation shaping of material and technology to go out the integrative lens of extruding of wall thickness and optics such as non-, uses in the linear illumination has the occasion of optics angle, waterproof requirement, and manufacturing cost compares injection moulding process and reduces 40%, and structural integration is pleasing to the eye reliable simultaneously, has solved waterproof construction, optical characteristic demand in step, and can replace traditional lens of moulding plastics, and the simple and convenient efficiency of lamps and lanterns field installation operation promotes 2 times.

Referring to fig. 2, the extrusion die 100 includes a neck 110, a first flow dividing plate 120, a second flow dividing plate 130, a pinch plate 140, a die plate 150, a fixing member 160, a temperature control unit 170, and a fixing bolt 180. The neck 110, the first splitter plate 120, the second splitter plate 130, the shrink plate 140, and the mouth mold plate 150 are sequentially arranged from front to back. The fixing member 160 covers the outer sides of the first flow dividing plate 120, the second flow dividing plate 130 and the contraction plate 140, so that the first flow dividing plate 120, the second flow dividing plate 130 and the contraction plate 140 are fixedly connected together. The temperature control unit 170 is wrapped on the outer side of the die plate 150 and used for controlling the temperature in the die plate 150. The fixing bolt 180 sequentially penetrates through the opening plate 150, the contraction plate 140, the second flow dividing plate 130, the first flow dividing plate 120 and the machine neck 110 to fix the machine neck 110, the first flow dividing plate 120, the second flow dividing plate 130, the contraction plate 140 and the opening plate 150 together.

The neck 110 is provided with a first inlet hole 111 therein. The first end 112 of the neck 110 is a forwardly extending, externally threaded, cylindrical structure. The first end 112 of the neck 110 is in threaded connection with a high-speed single screw extruder filled with a sizing material A, and the PC material is heated and melted by the high-speed single screw extruder to form the sizing material A, and is extruded into the neck 110 by the extruder. The second end 113 of the neck 110 interfaces with the first splitter plate 120.

The first splitter plate 120 has a rectangular parallelepiped structure and is provided with a first splitter hole 121 therein. The second splitter plate 130 is a rectangular parallelepiped structure, and a second splitter hole 131 is formed therein. The contraction plate 140 has a rectangular parallelepiped structure, and has a first contraction hole 141 and a second contraction hole 142 therein. The second contraction hole 142 is disposed below the first contraction hole 141. The rubber material A flows through the first feeding hole 111, the first shunt hole 121, the second shunt hole 131 and the second contraction hole 142 in sequence to the die plate 150 for extrusion molding. The first splitter plate 120, the second splitter plate 130 and the shrink plate 140 can smoothly transition the extrusion pressure transmitted from the neck 110, so that the rubber compound a can stably flow from the neck 110 to the die plate 150, the wall thickness of the product is prevented from fluctuating due to pressure fluctuation, and the product forming rate is improved. Further, the second porthole 131 has a smaller bore diameter than the first porthole 121. The aperture of the second contraction hole 142 is smaller than that of the second diversion hole 131, so that the contraction plate 140 can transition the extrusion pressure of the sizing material a from the second diversion plate 130 to the die plate 150, the flow stability of the sizing material a is improved, and the forming size precision of the product is improved. The thicknesses of the first splitter plate 120, the second splitter plate 130 and the shrinking plate 140 can be increased or decreased according to the difficulty of extruding the actual product.

The second splitter plate 130 is also provided with a second feed aperture 132. The second feed hole 132 is perforated from the top of the second flow dividing plate 130 down to the second flow dividing hole 131. The PC material is heated and melted by the high-speed single-screw extruder to form a sizing material B, the high-speed single-screw extruder filled with the sizing material B is connected with the second feeding hole 132, the sizing material B is synchronously extruded into the second feeding hole 132 by the extruder, flows through the first shrinkage hole 141, is converged with the sizing material A on the die plate 150, and is extruded together on the die plate 150 to form the preformed body. In this embodiment, because the top of the two-color lens, that is, the thickness of the wall of the molded part of the compound B, is small, the second flow dividing plate is provided with the second feeding hole 132, so that the compound B enters the first shrinkage hole 141 from the second feeding hole 132 alone, and joins with the compound a at the die plate 150, thereby enabling the discharge of each part of the two-color lens to be complete, and improving the molding size precision of the two-color lens.

Referring to fig. 2 and 3, the die plate 150 has a rectangular parallelepiped structure and has a die hole 151 formed therein. The discharge end 152 of the die plate 150 is provided with a discharge port 153. A two-color gum is extruded from the discharge port 153 to form a preform. Discharge port 153 includes a first compound outlet 1531 and a second compound outlet 1532. The first and second compound outlets 1531 and 1532 are integrated. The first compound outlet 1531 is a rectangular structure for extrusion to form the matte end of the bi-color lens. The second compound outlet 1532 is used to extrude the clear side end of the two-color lens. The upper section 1532a of the second glue outlet 1532 is rectangular and forms a step with the first glue outlet 1531, and the lower section 1532b of the second glue outlet 1532 extends downward to form two engaging legs, which are bent inward. An included angle a is formed between the inner sides of the two clamping legs and the upper section 1532a of the second glue outlet 1532, and the included angle a ranges from 60 degrees to 80 degrees. Through inwards bending the clamping pins, the light-emitting projection angle can be smaller, so that the light-emitting device is suitable for occasions with small-angle light-emitting requirements. In this embodiment, the included angle A ranges from 60 to 80 degrees. In other embodiments, the included angle a may be designed to be other angles to achieve different light emitting effects.

The temperature control unit 170 includes a heating coil 171 and three heating members 172. The heat generating ring 171 is wrapped around the die plate 150. Three heating members 172 are provided on the heating coil 171 and are respectively located on the left, right and lower sides of the die plate 150 to control the temperature inside the die plate 150 from the left, right and lower sides of the die plate 150. In the extrusion process of the double-color sizing material, the temperatures of the opening template 150 in different directions are controlled, so that the discharge amount at the corresponding position is finely controlled, and the adjustability of the size of the product is improved.

In this embodiment, the rubber material a is fed into the first feeding hole 111 by an extruder, the rubber material B is fed into the second feeding hole 132 by an extruder, the rubber material a and the rubber material B are merged at the die plate 150 and extruded through the discharging hole 153 to form a preform, and then the preform is introduced into the sizing die 200 through a traction device to perform a sizing operation to form a target molded body. The target molded body passes through a heating device 300 with constant temperature, is output through a traction device, and is finally processed into a required length through automatic cutting equipment.

The utility model provides a pair of double-colored lens extrusion moulding mould through add heating device at the stock mould rear, heats the operation to the target formed body to in shape and the curvature to the target formed body adjust, can let the target formed body slowly cool off simultaneously, reduce the internal stress, promote the anti cracking ability of the target formed body, improve product shaping rate. In addition, through set up the second feed port at second reposition of redundant personnel top to make two kinds of sizing materials get into the extrusion die from machine neck and second feed port respectively, thereby ensure that the each partial ejection of compact of double-colored lens is complete, promote the precision of double-colored lens molding dimension.

While the description and drawings of the present invention have been given for the purpose of illustration and description, it will be understood by those skilled in the art that these embodiments are not intended to limit the scope of the present invention, but are capable of modification in various forms and details without departing from the spirit and scope of the present invention. Therefore, the scope of the present disclosure is not limited to the above embodiments, but should be determined by the claims and the equivalents thereof.

Claims (10)

1. A double-color lens extrusion molding die is used for extruding and shaping double-color sizing materials to form a target molded body and is characterized by comprising an extrusion die, a shaping die and a heating device, wherein the extrusion die is used for extruding the double-color sizing materials to form a preformed body; the shaping mold is used for receiving the pre-shaped body and carrying out shaping operation on the pre-shaped body to form the target shaped body; the heating device is arranged behind the shaping mold and used for heating the target forming body.

2. The double-colored lens extrusion molding die of claim 1, wherein the extrusion die comprises a machine neck, a first splitter plate, a second splitter plate, a shrink plate and a die plate, the machine neck, the first splitter plate, the second splitter plate, the shrink plate and the die plate are sequentially arranged from front to back, a second splitter hole is arranged in the second splitter plate, a second feed hole is further arranged in the second splitter plate, a first shrink hole is arranged in the shrink plate, and the second feed hole penetrates from the top of the second splitter plate to the first shrink hole.

3. The double-tone lens extrusion molding die of claim 2, wherein the extrusion die further comprises a fixing member, the fixing member is wrapped around the first splitter plate, the second splitter plate and the shrink plate, so that the first splitter plate, the second splitter plate and the shrink plate are fixedly joined together.

4. The double-colored lens extrusion molding die of claim 3, wherein a second shrinkage hole is further arranged in the shrinkage plate, the second shrinkage hole is arranged below the first shrinkage hole, and the diameter of the second shrinkage hole is smaller than that of the second branch hole.

5. The double-colored lens extrusion molding die of claim 4, wherein a discharge port is arranged at a discharge end of the port die plate, the double-colored glue is extruded from the discharge port to form the preform, the discharge port comprises a first glue outlet and a second glue outlet, and the first glue outlet and the second glue outlet are of an integral structure.

6. The double-colored lens extrusion molding mould of claim 5, wherein the first glue outlet is of a rectangular structure, the upper section of the second glue outlet is of a rectangular structure and forms a step with the first glue outlet, two clamping feet extend downwards from the lower section of the second glue outlet, the two clamping feet are bent inwards relatively, and an included angle is formed between the inner side of each clamping foot and the upper section of the second glue outlet.

7. The two-color lens extrusion molding die of claim 6, wherein the included angle ranges from 60 degrees to 80 degrees.

8. The double-colored lens extrusion molding die of claim 7, wherein the extrusion die further comprises a temperature control unit, and the temperature control unit is coated on the outer side of the die plate and used for controlling the temperature in the die plate.

9. The double-colored lens extrusion molding die of claim 8, wherein the temperature control unit comprises a heating ring and three heating elements, the heating ring is wrapped around the periphery of the die plate, the three heating elements are disposed on the heating ring and respectively located on the left side, the right side and the lower side of the die plate, so as to respectively control the temperature inside the die plate from the left side, the right side and the lower side of the die plate.

10. The double-tone lens extrusion molding die of claim 9, wherein the extrusion die further comprises a fixing bolt, and the fixing bolt passes through the opening plate, the shrink plate, the second splitter plate, the first splitter plate and the neck in sequence to fix the neck, the first splitter plate, the second splitter plate, the shrink plate and the opening plate together.

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