Processing method and device for light-emitting carrier with three-dimensional suspension effect and vehicle lamp

Abstract

The invention provides a processing method and device for a light-emitting carrier with a three-dimensional suspension effect and a vehicle lamp. The processing method for the light-emitting carrier comprises the steps that a skin raw material is added into a skin material injection molding screw, and the skin raw material enters a first hot runner; a core material with bubbles is added into a core material injection molding screw, and the core material with bubbles enters a second hot runner; the valve needle driving device controls the valve needle to seal the second hot runner, the valve needle opens the first hot runner, and the first hot runner injects molten skin raw materials into the mold cavity; and the valve needle driving device controls the valve needle to open the second hot runner, the second hot runner injects a molten core material with bubbles into the mold cavity, and the core material with the bubbles extrudes and forms the skin raw material outwards. The injection molding method solves the problem that an existing injection molding method for injection molding of three-dimensional patterns is inconvenient to use under the condition that the three-dimensional patterns are complex, such as the complex babysbreath type three-dimensional suspension effect.

Description

Technical Field

[0001] The present invention relates to the technical field of luminous carrier processing, and in particular to a luminous carrier processing method, device and vehicle lamp with a three-dimensional suspension effect. Background Art

[0002] With the development of social economy, the automobile industry has also developed, and the number of cars in use has increased. The headlights in cars are very important parts. With the continuous development of automobile lighting technology, the headlights that simply play the role of automobile lighting are gradually unable to meet the needs. The headlights that can produce a three-dimensional and layered sense are more recognized by designers and consumers.

[0003] At present, the optical pattern on the outer surface of the light-emitting carrier is used to refract light, which cannot achieve a three-dimensional effect. Generally, the three-dimensional pattern to be formed is injection molded separately, but the existing three-dimensional pattern injection molding method is not convenient for use in situations where the three-dimensional pattern is complex, such as a complex star-like three-dimensional suspension effect. Summary of the invention

[0004] The problem solved by the present invention is that the existing three-dimensional pattern injection molding method is not convenient for use in the case of complex three-dimensional patterns, such as complex three-dimensional suspension effects of starry sky.

[0005] In order to solve the above problems, the present invention provides a method for processing a luminous carrier with a three-dimensional suspension effect, and the luminous carrier processing method is implemented by the luminous carrier processing device; The light-emitting carrier processing device includes: a skin material injection screw, a core material injection screw, a hot runner assembly, a valve needle, a valve needle driving device and a mold; the hot runner assembly includes: a first hot runner, a second hot runner and a runner outlet, the first hot runner is connected to the skin material injection screw, the second hot runner is connected to the core material injection screw, the side of the first hot runner is separated from the second hot runner, the first hot runner is sleeved on the outside of the second hot runner, and the runner outlet is connected to the first hot runner and the second hot runner; the valve needle is located in the second hot runner; the valve needle driving device controls the valve needle to slide in the second hot runner to control the connection between the first hot runner and the runner outlet, and the connection between the runner outlet and the second hot runner; the runner outlet is connected to the mold cavity of the mold; The luminescent carrier processing method comprises: Adding skin raw materials into the skin material injection screw, and the skin raw materials enter the first hot runner; Adding the core material with bubbles into the core material injection screw, and the core material with bubbles enters the second hot runner; The valve needle driving device controls the valve needle to seal the second hot runner, and the valve needle opens the first hot runner, and the first hot runner injects molten skin raw material into the mold cavity; The valve needle driving device controls the valve needle to open the second hot runner, and the second hot runner injects molten core material with bubbles into the mold cavity, and the core material with bubbles extrude the skin raw material outward to form.

[0006] The technical effect achieved after adopting this technical solution is as follows: the raw material of the skin adopts a mixture of PC material and PMMA material, and the core material with bubbles adopts a mixture of PC material and PMMA material with bubbles; wherein, the outer skin is first injected into the mold cavity and occupies the inner wall of the mold cavity, and then the mixture of PC material and PMMA material with bubbles is injected, and the outer skin can avoid bubbles approaching the edge and causing uneven edges; and the mixture of PC material and PMMA material with bubbles can form dense suspended features of different sizes after melt injection molding, and the suspended features are refracted twice, so that the light is evenly transmitted through the surface of the suspended features and transmitted to all angles. At this time, when the human eye looks at it from various angles of the light-emitting carrier, each position contains structures of different sizes similar to stars in the sky, achieving an ornamental shape. Requirements: Using a skin material injection screw to stir and inject the skin raw material can improve the uniformity and stability of the skin raw material and improve the plasticizing effect; using a core material injection screw to stir and inject the core material can improve the uniformity and stability of the core material and improve the plasticizing effect, and correspondingly, also improve the uniformity of the suspension feature brightness; using the first hot runner and the second hot runner arranged inside and outside, and opening and closing by a valve needle, on the one hand, improves the switching efficiency of the skin raw material and the core material, on the other hand, during the injection molding process, from the runner outlet to the entrance of the mold cavity, and then to the mold cavity, the material distribution in all areas can be the same as that of the first hot runner and the second hot runner, with the skin raw material on the outside and the core material on the inside, so that the core material can squeeze the skin raw material outward to achieve a uniform double-layer structure.

[0007] Further, the hot runner assembly includes a partition, the partition is used to separate the first hot runner and the second hot runner; the partition is provided with an inner opening at one end facing the runner outlet, the inner opening is used to connect the second hot runner and the runner outlet; The valve needle driving device controls the valve needle to seal the second hot runner, and the valve needle opens the first hot runner, specifically comprising: the valve needle retracts from the state of sealing the runner outlet to the inner opening, thereby sealing the inner opening and opening the runner outlet; The valve needle driving device controls the valve needle to open the second hot runner, specifically comprising: the valve needle retracts from a state of sealing the inner opening to the inside of the second hot runner, thereby opening the inner opening.

[0008] The technical effect achieved after adopting this technical solution is: the valve needle can quickly switch between two injection molding states to improve efficiency; when the valve needle only seals the inner opening, the skin raw material of the first hot runner enters the mold cavity, and then quickly switches to the inside of the second hot runner, opening the inner opening and the runner outlet, so that the core material can be interspersed in the middle position of the skin raw material and injected into the mold cavity together, achieving the effect of the skin raw material covering the outside of the core material.

[0009] Further, the valve needle driving device comprises a two-stroke cylinder and a valve assembly, the two-stroke cylinder is connected to the valve needle, the valve assembly controls the action of the two-stroke cylinder, and the two-stroke cylinder has a first stroke point, a second stroke point and a zero point; The valve needle retracts from the state of sealing the flow channel outlet to the inner opening, thereby sealing the inner opening and opening the flow channel outlet, specifically comprising: the valve assembly controls the two-stroke cylinder to move from the zero point to the first stroke point, at which time the valve needle retracts from the state of sealing the flow channel outlet to the inner opening; The valve needle retracts from the state of sealing the inner opening to the interior of the second hot runner, thereby opening the inner opening, specifically including: the valve assembly controls the two-stroke cylinder to move from a first stroke point to a second stroke point, at which time the valve needle retracts from the state of sealing the inner opening to the interior of the second hot runner.

[0010] The technical effect achieved after adopting this technical solution is: by switching the air supply method of the valve assembly, the two-stroke cylinder can be quickly pushed to switch between the first stroke point, the second stroke point and the zero point, thereby quickly driving the valve needle to move.

[0011] Furthermore, the core material with bubbles extrude the surface raw material outwards to form a shape, and then the light-emitting carrier processing method further includes: The valve assembly controls the two-stroke cylinder to move from the second stroke point to the zero point, and the valve needle extends from the state of being located inside the second hot runner to the position of the runner outlet, thereby sealing the inner opening and the runner outlet.

[0012] The technical effect achieved after adopting this technical solution is as follows: the valve needle is driven by a two-stroke cylinder. When the two-stroke cylinder moves to zero, it can seal the inner opening and the flow channel outlet in turn. The valve needle first blocks the inner opening to prevent the core material from continuing to be exported. At this time, the surface raw material that continues to be exported can cover the core material at the flow channel outlet, so that the core material in the mold cavity is completely covered by the surface raw material.

[0013] Furthermore, the screw back pressure of the core material injection molding screw is lower than the screw back pressure of the skin material injection molding screw; the screw speed of the core material injection molding screw is higher than the screw speed of the skin material injection molding screw.

[0014] The technical effects achieved after adopting this technical solution are as follows: the screw back pressure of the core material injection molding screw is lower, which can avoid the bubble crushing in the core material, control the injection speed of the core material, and further improve the uniformity; increase the screw speed of the core material injection molding screw to avoid the bubbles staying at the front end of the screw for too long, and at the same time improve the uniformity of bubble heating and mixing.

[0015] The present invention also provides a luminous carrier processing device with a three-dimensional suspension effect, which is used to implement the luminous carrier processing method provided by any of the above technical solutions; The light-emitting carrier processing device comprises: a surface material injection molding screw, a core material injection molding screw, a hot runner assembly, a valve needle, a valve needle driving device and a mold; The skin material injection screw is used for injection molding the skin raw material; The core material injection screw is used for injection molding the core material with bubbles; The hot runner assembly comprises: a first hot runner, a second hot runner, a runner outlet and a partition, the partition is used to separate the first hot runner from the second hot runner, the first hot runner is sleeved on the outside of the second hot runner, the partition is provided with an inner opening at one end facing the runner outlet, the runner outlet is connected to the first hot runner, and the inner opening is connected to the first hot runner and the second hot runner; the first hot runner is connected to the skin material injection screw, and the second hot runner is connected to the core material injection screw; The valve needle driving device controls the valve needle to slide in the second hot runner; the valve needle opens the first hot runner and the second hot runner, or only opens the first hot runner, or closes the first hot runner and the second hot runner; The flow channel outlet is connected to the mold cavity of the mold.

[0016] The technical effect achieved after adopting this technical solution: the luminescent carrier processing device can implement the above-mentioned luminescent carrier processing method and achieve one or more of the above-mentioned technical effects.

[0017] Furthermore, the valve needle has a first diameter portion and a second diameter portion at one end close to the flow channel outlet, and the first diameter portion is located between the flow channel outlet and the second diameter portion; The diameter of the first diameter portion is smaller than the diameter of the second diameter portion, and the diameter of the flow channel outlet is smaller than the diameter of the inner opening; the first diameter portion matches the flow channel outlet, and the second diameter portion matches the inner opening.

[0018] The technical effects achieved after adopting this technical solution are as follows: when the second diameter portion is located at the inner opening, the inner opening can be sealed and the runner outlet can be opened; when the second diameter portion and the first diameter portion are located inside the inner opening, since the diameter of the first diameter portion is smaller than the inner opening, the core material with bubbles in the second hot runner can be discharged; when the first diameter portion is located at the runner outlet, the second diameter portion and the inner wall around the runner outlet fit together, thereby achieving a good sealing effect, blocking the conduction of the first hot runner, and at this time the second hot runner is also sealed, and the core material inside it will not flow out of the inner opening.

[0019] Further, the valve needle drive device includes a double-stroke cylinder and a valve assembly; The double-stroke cylinder comprises a first cylinder body, a first piston rod, a second cylinder body, and a second piston rod; the first piston rod divides the first cylinder body into a first cavity and a second cavity; the rod body of the first piston rod faces the first cavity; the second piston rod divides the second cylinder body into a third cavity and a fourth cavity; the rod body of the second piston rod faces the third cavity, and the rod body of the second piston rod extends into the second cavity and faces the first piston rod; the first piston rod is connected to a valve needle; The valve assembly is in communication with the first cavity, the second cavity, the third cavity, and the fourth cavity.

[0020] The technical effect achieved after adopting this technical solution is as follows: when the valve assembly supplies air to the second cavity, the distance that the first piston rod extends out of the first cylinder body is the maximum, and the second piston rod is separated from the first piston rod. At this time, the two-stroke cylinder is in the zero point state, and the valve needle can seal the first hot runner and the second hot runner; when the valve assembly supplies air to the first cavity and the third cavity, the distance that the first piston rod extends out of the first cylinder body is the shortest. At this time, the two-stroke cylinder is in the second stroke point state, the valve needle is located in the second hot runner, and the first hot runner and the second hot runner are both open; when the valve assembly supplies air to the first cavity and the fourth cavity, the second piston rod presses against the back of the first piston rod. At this time, the two-stroke cylinder is in the first stroke point state, the valve needle is located at the inner opening, the first hot runner is open, and the second hot runner is closed.

[0021] Further, the valve assembly includes a first two-position five-way solenoid valve and a second two-position five-way solenoid valve; The first two-position five-way solenoid valve is connected to the first cavity and the second cavity, and is used to control the air intake of the first cavity and the air discharge of the second cavity, or to control the air discharge of the first cavity and the air intake of the second cavity; The second two-position five-way solenoid valve is connected to the third cavity and the fourth cavity, and is used to control the air intake of the third cavity and the air outlet of the fourth cavity, or to control the air outlet of the third cavity and the air intake of the fourth cavity.

[0022] The technical effect achieved after adopting this technical solution is: the first two-position five-way solenoid valve can control the moving direction of the first piston rod, and the second two-position five-way solenoid valve can control the moving direction of the second piston rod, thereby realizing the three states of the first stroke point, the second stroke point and the zero point.

[0023] Further, the skin material injection screw comprises: a first screw, a first screw housing, and a first hopper, wherein the first screw is arranged in the first screw housing, the first hopper is installed on the side of the first screw housing, the first hopper is connected to the side of the first screw, and one end of the first screw housing is provided with a skin material outlet; And / or, the core material injection screw includes: a second screw, a second screw housing, and a second hopper, the second screw is arranged in the second screw housing, the second hopper is installed on the side of the second screw housing, the second hopper is connected to the side of the second screw, and the second screw housing has core material discharge ports at both ends.

[0024] The technical effect achieved after adopting this technical solution is as follows: a mixture of PC material and PMMA material is put into the first hopper of the injection molding screw of the skin material, and the mixture of PC material and PMMA material is transformed into a molten state after being conveyed and heated by the first screw, and is extruded from the discharge port of the skin material; a mixture of PC material and PMMA material with bubbles is put into the second hopper of the injection molding screw of the core material, and the mixture of PC material and PMMA material with bubbles is transformed into a molten state after being conveyed and heated by the second screw, and is extruded from the discharge port of the core material.

[0025] The present invention also provides a vehicle lamp, comprising a light-emitting carrier, wherein the light-emitting carrier is manufactured by a light-emitting carrier processing method as provided in any of the above technical solutions, wherein the light-emitting carrier comprises: a skin and a core, wherein the core is located in the skin and has suspended bubbles; the vehicle lamp further comprises: a light source, a light guide, light guide teeth, and an optical pattern, wherein the light guide teeth are arranged on the light guide, and the optical pattern is arranged on the light-emitting carrier; wherein the light source transmits light to the light guide, and the light guide refracts light from the light guide teeth to the light-emitting carrier, and then refracts uniform light from the optical pattern.

[0026] The technical effect achieved after adopting this technical solution is as follows: the light source is refracted into the light guide through the light inlet at the end of the light guide, and the light is filled in the entire light guide through the principle of total reflection. Then, the light is reflected from the light guide teeth from sparse to dense at the end, so that the uniform linear light is refracted into the thick-walled part. The irregularly arranged bubbles inside the thick-walled part refract the light twice, so that the light is evenly transmitted through the characteristic surface and transmitted to all angles. At this time, when the human eye looks at the thick-walled part from all angles, the inside of the thick-walled part looks like the vast night sky, with stars of different sizes in various positions, which is very ornamental and innovative. And after some of the forward light passes through the bubbles, it will become more uniform, improving the front lighting effect. Due to the refractive characteristics of the bubbles, the light refraction angle is large, which also improves the viewing angle of the headlights. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A flow chart of a method for processing a light-emitting carrier with a three-dimensional suspension effect provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a light-emitting carrier processing device with a three-dimensional suspension effect provided by an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a double-stroke cylinder in a zero-point state; Figure 4 It is a structural schematic diagram of a double-stroke cylinder in a first stroke point state; Figure 5 It is a structural schematic diagram of a double-stroke cylinder in a second stroke point state; Figure 6 It is a schematic diagram of the connection structure between the hot runner assembly and the mold when the double-stroke cylinder is in the zero point state; Figure 7 for Figure 6 A partial enlarged view of the middle A area; Figure 8 It is a schematic diagram of the connection structure between the hot runner assembly and the mold when the double-stroke cylinder is in the first stroke point state; Fig. 9 for Figure 8 A partial enlarged view of the middle B area; Fig.10 It is a schematic diagram of the connection structure between the hot runner assembly and the mold when the double-stroke cylinder is in the second stroke point state; Fig.11 It is a schematic diagram of the structure of the injection molding screw of the skin material; Fig.12 It is a schematic diagram of the structure of the injection molding screw of the core material; Fig.13 A schematic diagram of the structure of a vehicle lamp provided by an embodiment of the present invention; Fig.14 It is a schematic diagram of the structure of the light-emitting carrier and the optical pattern.

[0028] Description of reference numerals: 100-light-emitting carrier processing device; 110-skin material injection screw; 111-first screw; 112-first screw housing; 113-first hopper; 120-core material injection screw; 121-second screw; 122-second screw housing; 123-second hopper; 130-hot runner assembly; 131-first hot runner; 132-second hot runner; 133-runner outlet; 134-partition; 140-valve needle; 141-first diameter portion; 142-second diameter portion; 150-valve needle drive device; 151a- The first cavity; 151b-the second cavity; 151c-the third cavity; 151d-the fourth cavity; 153-the first cylinder; 154-the first piston rod; 155-the second cylinder; 156-the second piston rod; 157-the first two-position five-way solenoid valve; 158-the second two-position five-way solenoid valve; 160-the mold; 161-the mold cavity; 200-the headlight; 210-the light source; 220-the light guide; 230-the light guide tooth; 240-the optical pattern; 250-the outer lampshade; 260-the lamp housing; 270-the bracket; 280-the light-emitting carrier. DETAILED DESCRIPTION

[0029] The object of the present invention is to provide a method and device for processing a luminous carrier with a three-dimensional suspension effect, so as to achieve the effect that the luminous carrier produces a complex three-dimensional pattern.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1-Figure 12 The present invention provides a method for processing a luminous carrier with a three-dimensional suspension effect, and the luminous carrier processing method is implemented by a luminous carrier processing device; The light-emitting carrier processing device includes: a surface material injection molding screw, a core material injection molding screw, a hot runner assembly, a valve needle, a valve needle driving device and a mold; the hot runner assembly includes: a first hot runner, a second hot runner and a runner outlet, the first hot runner is connected to the surface material injection molding screw, the second hot runner is connected to the core material injection molding screw, the side of the first hot runner is separated from the second hot runner, the first hot runner is sleeved on the outside of the second hot runner, and the runner outlet is connected to the first hot runner and the second hot runner; the valve needle is located in the second hot runner; the valve needle driving device controls the valve needle to slide in the second hot runner to control the connection between the first hot runner and the runner outlet, and the connection between the runner outlet and the second hot runner; the runner outlet is connected to the mold cavity of the mold; The luminescent carrier processing method includes: Adding skin raw materials into the skin material injection screw, and the skin raw materials enter the first hot runner; Adding the core material with bubbles into the core material injection screw, and the core material with bubbles enters the second hot runner; The valve needle driving device controls the valve needle to seal the second hot runner, and the valve needle opens the first hot runner, and the first hot runner injects molten skin raw material into the mold cavity; The valve needle driving device controls the valve needle to open the second hot runner, and the second hot runner injects molten core material with bubbles into the mold cavity, and the core material with bubbles extrude the skin raw material outward to form.

[0032] In this embodiment, the raw material of the skin is a mixture of PC material and PMMA material, and the core material with bubbles is a mixture of PC material and PMMA material with bubbles; wherein, the outer skin is first injected into the mold cavity and occupies the inner wall of the mold cavity, and then the mixture of PC material and PMMA material with bubbles is injected, and the outer skin can avoid bubbles approaching the edge and causing uneven edges; and the mixture of PC material and PMMA material with bubbles can form dense suspended features of different sizes after melt injection molding, and the suspended features are refracted twice so that the light is evenly transmitted through the surface of the suspended features and transmitted to all angles. At this time, when the human eye looks at it from all angles of the light-emitting carrier, each position contains structures of different sizes similar to stars in the sky, meeting the requirements of ornamental modeling; The injection molding screw of the skin material stirs and injects the skin raw material, which can improve the uniformity and stability of the skin raw material and improve the plasticizing effect; the injection molding screw of the core material stirs and injects the core material, which can improve the uniformity and stability of the core material and improve the plasticizing effect, and correspondingly, also improve the uniformity of the suspension characteristic brightness; the first hot runner and the second hot runner arranged inside and outside are adopted, and opened and closed by the valve needle, on the one hand, the switching efficiency of the skin raw material and the core material is improved, on the other hand, during the injection molding process, from the runner outlet to the entrance of the mold cavity, and then to the mold cavity, the material distribution in all areas can be the same as the distribution of the first hot runner and the second hot runner, with the skin raw material on the outside and the core material on the inside, so that the core material can squeeze the skin raw material outward to achieve a uniform double-layer structure.

[0033] In a specific embodiment, the hot runner assembly includes a partition, the partition is used to separate the first hot runner from the second hot runner; an inner opening is provided at one end of the partition facing the runner outlet, and the inner opening is used to connect the second hot runner and the runner outlet; The valve needle driving device controls the valve needle to seal the second hot runner, and the valve needle opens the first hot runner, specifically comprising: the valve needle retracts from the state of sealing the runner outlet to the inner opening, thereby sealing the inner opening and opening the runner outlet; The valve needle driving device controls the valve needle to open the second hot runner, specifically comprising: the valve needle retracts from a state of sealing the inner opening to the inside of the second hot runner, thereby opening the inner opening.

[0034] It should be noted that the valve needle can quickly switch between two injection molding states to improve efficiency; when the valve needle only seals the inner opening, the skin raw material of the first hot runner enters the mold cavity, and then quickly switches to the inside of the second hot runner, opening the inner opening and the runner outlet, so that the core material can be interspersed in the middle position of the skin raw material and injected into the mold cavity together, achieving the effect of the skin raw material covering the outside of the core material.

[0035] In a specific embodiment, the valve needle driving device includes a two-stroke cylinder and a valve assembly, the two-stroke cylinder is connected to the valve needle, the valve assembly controls the action of the two-stroke cylinder, and the two-stroke cylinder has a first stroke point, a second stroke point and a zero point; The valve needle retracts from the state of sealing the outlet of the flow channel to the inner opening, thereby sealing the inner opening and opening the outlet of the flow channel, specifically comprising: the valve assembly controls the two-stroke cylinder to move from the zero point to the first stroke point, at which time the valve needle retracts from the state of sealing the outlet of the flow channel to the inner opening; The valve needle retracts from the state of sealing the inner opening to the inside of the second hot runner, thereby opening the inner opening, specifically including: the valve assembly controls the two-stroke cylinder to move from the first stroke point to the second stroke point, at which time the valve needle retracts from the state of sealing the inner opening to the inside of the second hot runner.

[0036] It should be noted that by switching the air supply mode of the valve assembly, the two-stroke cylinder can be quickly pushed to switch between the first stroke point, the second stroke point and the zero point, thereby quickly driving the valve needle to move.

[0037] In a specific embodiment, the core material with bubbles extrude the surface raw material outward, and then the light-emitting carrier processing method further includes: The valve assembly controls the two-stroke cylinder to move from the second stroke point to the zero point, and the valve needle extends from the state of being located inside the second hot runner to the position of the runner outlet, thereby sealing the inner opening and the runner outlet.

[0038] It should be noted that the valve needle is driven by a two-stroke cylinder. When the two-stroke cylinder moves to zero, it can seal the inner opening and the flow channel outlet in turn. The valve needle first blocks the inner opening to prevent the core material from continuing to be discharged. At this time, the skin raw material that continues to be discharged can cover the core material at the flow channel outlet, so that the core material in the mold cavity is completely covered by the skin raw material.

[0039] In a specific embodiment, the screw back pressure of the core material injection molding screw is lower than the screw back pressure of the skin material injection molding screw; the screw speed of the core material injection molding screw is higher than the screw speed of the skin material injection molding screw.

[0040] It should be noted that the screw back pressure of the core material injection molding screw is lower, which can avoid the bubble breakage in the core material, control the injection speed of the core material, and further improve the uniformity; increasing the screw speed of the core material injection molding screw can avoid the bubbles staying at the front end of the screw for too long, and at the same time improve the uniformity of bubble heating and mixing.

[0041] Preferably, the screw back pressure of the core material injection molding screw is 0.1Mpa, and the screw back pressure of the skin material injection molding screw is 5~10Mpa; the screw speed of the core material injection molding screw is 80% of the maximum speed, and the screw speed of the skin material injection molding screw is 40%~60% of the maximum speed; among them, the screw speed of the core material injection molding screw can be adjusted according to the size and number of bubbles per unit area.

[0042] See also Figure 2-Figure 10 The present invention also provides a luminous carrier processing device 100 with a three-dimensional suspension effect, which is used to implement a luminous carrier processing method as provided in any of the above technical solutions; The light-emitting carrier processing device 100 includes: a skin material injection molding screw 110, a core material injection molding screw 120, a hot runner assembly 130, a valve needle 140, a valve needle driving device 150 and a mold 160; The skin material injection screw 110 is used for injection molding the skin raw material; The core material injection screw 120 is used for injection molding the core material with bubbles; The hot runner assembly 130 includes: a first hot runner 131, a second hot runner 132, a runner outlet 133 and a partition 134. The partition 134 is used to separate the first hot runner 131 from the second hot runner 132. The first hot runner 131 is sleeved on the outside of the second hot runner 132. The partition 134 is provided with an inner opening at one end facing the runner outlet 133. The runner outlet 133 is connected to the first hot runner 131, and the inner opening is connected to the first hot runner 131 and the second hot runner 132. The first hot runner 131 is connected to the skin material injection screw 110, and the second hot runner 132 is connected to the core material injection screw 120. The valve needle driving device 150 controls the valve needle 140 to slide in the second hot runner 132; the valve needle 140 opens the first hot runner 131 and the second hot runner 132, or only opens the first hot runner 131, or closes the first hot runner 131 and the second hot runner 132; The flow channel outlet 133 is connected to the mold cavity 161 of the mold 160 .

[0043] It should be noted that the luminescent carrier processing device 100 can implement the above-mentioned luminescent carrier processing method and achieve one or more of the above-mentioned technical effects.

[0044] In a specific embodiment, the end of the valve needle 140 close to the flow channel outlet 133 has a first diameter portion 141 and a second diameter portion 142, and the first diameter portion 141 is located between the flow channel outlet 133 and the second diameter portion 142; The diameter of the first diameter portion 141 is smaller than the diameter of the second diameter portion 142 , and the diameter of the flow channel outlet 133 is smaller than the diameter of the inner opening; the first diameter portion 141 matches the flow channel outlet 133 , and the second diameter portion 142 matches the inner opening.

[0045] It should be noted that when the second diameter portion 142 is located at the inner opening, the inner opening can be sealed and the runner outlet 133 can be opened; when the second diameter portion 142 and the first diameter portion 141 are located inside the inner opening, since the diameter of the first diameter portion 141 is smaller than the inner opening, the core material with bubbles in the second hot runner 132 can be discharged; when the first diameter portion 141 is located at the runner outlet 133, the second diameter portion 142 and the inner wall of the runner outlet 133 fit together, thereby achieving a good sealing effect, blocking the conduction of the first hot runner 131, and at this time the second hot runner 132 is also sealed, and the core material inside it will not flow out of the inner opening.

[0046] Preferably, the first diameter portion 141 is a boss structure, and its side surface is a sloped surface, and the flow channel outlet 133 is a matching boss structure so that the flow channel outlet 133 can guide the valve needle and seal the two; and, when the two-stroke cylinder is in the first stroke point state, no large gap will be generated between the sloped surface on the side surface of the first diameter portion 141 and the sloped surface on the side surface of the flow channel outlet 133. At this time, the surface material flowing out of the first hot runner 131 will first flow along the side surface of the flow channel outlet 133. Therefore, when the two-stroke cylinder switches to the second stroke point state, an area will be vacated in the middle of the flow channel outlet 133 for the core material of the second hot runner 132 to be injected, forming a double-layer structure in the mold cavity 161.

[0047] In a specific embodiment, the valve needle drive device 150 includes a dual-stroke cylinder and a valve assembly; The double-stroke cylinder includes a first cylinder body 153, a first piston rod 154, a second cylinder body 155, and a second piston rod 156; the first piston rod 154 divides the first cylinder body 153 into a first cavity 151a and a second cavity 151b; the rod body of the first piston rod 154 faces the first cavity 151a; the second piston rod 156 divides the second cylinder body 155 into a third cavity 151c and a fourth cavity 151d; the rod body of the second piston rod 156 faces the third cavity 151c, and the rod body of the second piston rod 156 extends into the second cavity 151b and faces the first piston rod 154; the first piston rod 154 is connected to the valve needle 140; The valve assembly connects the first cavity 151a, the second cavity 151b, the third cavity 151c and the fourth cavity 151d.

[0048] Figure 3 It is a structural diagram of a double-stroke cylinder in the zero state. Figure 4 It is a structural diagram of a two-stroke cylinder in the first stroke point state. Figure 5 It is a structural schematic diagram of a double-stroke cylinder in the second stroke point state.

[0049] It should be noted that when the valve assembly supplies air to the second cavity 151b, the first piston rod 154 extends the distance of the first cylinder body 153 to the maximum, and the second piston rod 156 is separated from the first piston rod 154. At this time, the two-stroke cylinder is in the zero point state, and the valve needle 140 can seal the first hot runner 131 and the second hot runner 132; when the valve assembly supplies air to the first cavity 151a and the third cavity 151c, the first piston rod 154 extends the distance of the first cylinder body 153 to the shortest. At this time, the two-stroke cylinder is in the second stroke point state, the valve needle 140 is located in the second hot runner 132, and the first hot runner 131 and the second hot runner 132 are both open; when the valve assembly supplies air to the first cavity 151a and the fourth cavity 151d, the second piston rod 156 presses against the back of the first piston rod 154. At this time, the two-stroke cylinder is in the first stroke point state, the valve needle 140 is located at the inner opening, the first hot runner 131 is open, and the second hot runner 132 is closed.

[0050] In a specific embodiment, the valve assembly includes a first two-position five-way solenoid valve 157 and a second two-position five-way solenoid valve 158; The first two-position five-way solenoid valve 157 is connected to the first cavity 151a and the second cavity 151b. The first two-position five-way solenoid valve 157 is used to control the air intake of the first cavity 151a and the air discharge of the second cavity 151b, or to control the air discharge of the first cavity 151a and the air intake of the second cavity 151b; The second two-position five-way solenoid valve 158 connects the third cavity 151c and the fourth cavity 151d, and is used to control the air intake of the third cavity 151c and the air discharge of the fourth cavity 151d, or to control the air discharge of the third cavity 151c and the air intake of the fourth cavity 151d.

[0051] It should be noted that the first two-position five-way solenoid valve 157 can control the moving direction of the first piston rod 154, and the second two-position five-way solenoid valve 158 can control the moving direction of the second piston rod 156, thereby realizing the three states of the first stroke point, the second stroke point and the zero point.

[0052] In a specific embodiment, the skin material injection screw 110 includes: a first screw 111, a first screw housing 112, and a first hopper 113. The first screw 111 is disposed in the first screw housing 112, and the first hopper 113 is installed on the side of the first screw housing 112. The first hopper 113 is connected to the side of the first screw 111, and one end of the first screw housing 112 is provided with a skin material discharge port; And / or, the core material injection screw 120 includes: a second screw 121, a second screw housing 122, and a second hopper 123. The second screw 121 is arranged in the second screw housing 122, and the second hopper 123 is installed on the side of the second screw housing 122. The second hopper 123 is connected to the side of the second screw 121, and core material discharge ports are provided at both ends of the second screw housing 122.

[0053] It should be noted that the first hopper 113 of the skin material injection molding screw 110 is filled with a mixture of PC material and PMMA material, which is converted into a molten state after being conveyed and heated by the first screw 111 and is extruded from the skin material outlet; the second hopper 123 of the core material injection molding screw 120 is filled with a mixture of PC material and PMMA material with bubbles, which is converted into a molten state after being conveyed and heated by the second screw 121 and is extruded from the core material outlet.

[0054] See also Figure 13-14 The present invention also provides a vehicle lamp 200, which includes a light-emitting carrier 280. The light-emitting carrier 280 is made by a light-emitting carrier processing method provided by any of the above technical solutions. The light-emitting carrier 280 includes: a skin and a core, the core is located in the skin and has suspended bubbles; the vehicle lamp 200 also includes: a light source 210, a light guide 220, a light guide tooth 230, and an optical pattern 240. The light guide tooth 230 is arranged on the light guide 220, and the optical pattern 240 is arranged on the light-emitting carrier 280; wherein the light source 210 transmits light to the light guide 220, the light guide 220 refracts light from the light guide tooth 230 to the light-emitting carrier 280, and then refracts uniform light from the optical pattern 240.

[0055] It should be noted that the light source 210 is refracted into the light guide 220 through the light inlet at the end of the light guide 220, and the light is filled with the entire light guide 220 through the principle of total reflection, and then the light is reflected from the light inlet of the light guide 220 to the end of the light guide teeth 230 from sparse to dense, so that the uniform linear light is refracted into the thick-walled part. The irregularly arranged bubbles inside the thick-walled part refract the light twice, so that the light passes through the characteristic surface evenly and transmits the light to all angles. At this time, when the human eye looks at the thick-walled part from all angles, the inside of the thick-walled part looks like a vast night sky, with stars of different sizes in various positions, which is very ornamental and innovative. And after some of the forward light passes through the bubbles, it will become more uniform, improving the front lighting effect. Due to the refractive characteristics of the bubbles, the light refraction angle is large, which also improves the viewing angle of the headlight 200.

[0056] Preferably, the light-emitting carrier 280 has a base, which is used to fix the light-emitting carrier 280 , and the optical pattern 240 is located on the other side of the light-emitting carrier 280 away from the base.

[0057] Preferably, the vehicle lamp 200 further includes: an outer lampshade 250, a lamp housing 260 and a bracket 270. The outer lampshade 250 is connected to the lamp housing 260 to form an installation cavity inside. The bracket 270 is located between the outer lampshade 250 and the lamp housing 260 and is used to install the light guide 220. The light source 210 is located at the end of the light guide 220. The light-emitting carrier 280 is located on the side of the light guide 220 away from the bracket 270. The side of the light-emitting carrier 280 away from the light guide 220 is fixed by the outer lampshade 250.

[0058] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A method for processing a luminous carrier with a three-dimensional suspension effect, characterized in that: The luminescent carrier processing method is implemented by a luminescent carrier processing device; The light-emitting carrier processing device includes: a skin material injection screw, a core material injection screw, a hot runner assembly, a valve needle, a valve needle driving device and a mold; the hot runner assembly includes: a first hot runner, a second hot runner and a runner outlet, the first hot runner is connected to the skin material injection screw, the second hot runner is connected to the core material injection screw, the side of the first hot runner is separated from the second hot runner, the first hot runner is sleeved on the outside of the second hot runner, and the runner outlet is connected to the first hot runner and the second hot runner; the valve needle is located in the second hot runner; the valve needle driving device controls the valve needle to slide in the second hot runner to control the connection between the first hot runner and the runner outlet, and the connection between the runner outlet and the second hot runner; the runner outlet is connected to the mold cavity of the mold; The luminescent carrier processing method comprises: Adding skin raw materials into the skin material injection screw, and the skin raw materials enter the first hot runner; Adding the core material with bubbles into the core material injection screw, and the core material with bubbles enters the second hot runner; The valve needle driving device controls the valve needle to seal the second hot runner, and the valve needle opens the first hot runner, and the first hot runner injects molten skin raw material into the mold cavity; The valve needle driving device controls the valve needle to open the second hot runner, and the second hot runner injects molten core material with bubbles into the mold cavity, and the core material with bubbles extrude the skin raw material outward to form.

2. The method for processing a luminescent carrier according to claim 1, characterized in that: The hot runner assembly includes a partition, the partition is used to separate the first hot runner and the second hot runner; the partition is provided with an inner opening at one end facing the runner outlet, the inner opening is used to connect the second hot runner and the runner outlet; The valve needle driving device controls the valve needle to seal the second hot runner, and the valve needle opens the first hot runner, specifically comprising: the valve needle retracts from the state of sealing the runner outlet to the inner opening, thereby sealing the inner opening and opening the runner outlet; The valve needle driving device controls the valve needle to open the second hot runner, specifically comprising: the valve needle retracts from a state of sealing the inner opening to the inside of the second hot runner, thereby opening the inner opening.

3. The method for processing a luminescent carrier according to claim 2, characterized in that: The valve needle driving device comprises a two-stroke cylinder and a valve assembly, wherein the two-stroke cylinder is connected to the valve needle, and the valve assembly controls the action of the two-stroke cylinder, and the two-stroke cylinder has a first stroke point, a second stroke point and a zero point; The valve needle retracts from the state of sealing the flow channel outlet to the inner opening, thereby sealing the inner opening and opening the flow channel outlet, specifically comprising: the valve assembly controls the two-stroke cylinder to move from the zero point to the first stroke point, at which time the valve needle retracts from the state of sealing the flow channel outlet to the inner opening; The valve needle retracts from the state of sealing the inner opening to the interior of the second hot runner, thereby opening the inner opening, specifically including: the valve assembly controls the two-stroke cylinder to move from a first stroke point to a second stroke point, at which time the valve needle retracts from the state of sealing the inner opening to the interior of the second hot runner.

4. The method for processing a luminescent carrier according to claim 3, characterized in that: The core material with bubbles extrude the surface raw material outward to form a shape, and then the light-emitting carrier processing method further includes: The valve assembly controls the two-stroke cylinder to move from the second stroke point to the zero point, and the valve needle extends from the state of being located inside the second hot runner to the position of the runner outlet, thereby sealing the inner opening and the runner outlet.

5. The method for processing a luminescent carrier according to claim 1, characterized in that: The screw back pressure of the core material injection molding screw is lower than the screw back pressure of the skin material injection molding screw; the screw speed of the core material injection molding screw is higher than the screw speed of the skin material injection molding screw.

6. A luminous carrier processing device with a three-dimensional suspension effect, characterized in that: Used to implement the luminescent carrier processing method according to any one of claims 1 to 5; The light-emitting carrier processing device comprises: a surface material injection molding screw, a core material injection molding screw, a hot runner assembly, a valve needle, a valve needle driving device and a mold; The skin material injection screw is used for injection molding the skin raw material; The core material injection screw is used for injection molding the core material with bubbles; The hot runner assembly comprises: a first hot runner, a second hot runner, a runner outlet and a partition, the partition is used to separate the first hot runner from the second hot runner, the first hot runner is sleeved on the outside of the second hot runner, the partition is provided with an inner opening at one end facing the runner outlet, the runner outlet is connected to the first hot runner, and the inner opening is connected to the first hot runner and the second hot runner; the first hot runner is connected to the skin material injection screw, and the second hot runner is connected to the core material injection screw; The valve needle driving device controls the valve needle to slide in the second hot runner; the valve needle opens the first hot runner and the second hot runner, or only opens the first hot runner, or closes the first hot runner and the second hot runner; The flow channel outlet is connected to the mold cavity of the mold.

7. The luminescent carrier processing device according to claim 6, characterized in that: The valve needle has a first diameter portion and a second diameter portion at one end close to the flow channel outlet, wherein the first diameter portion is located between the flow channel outlet and the second diameter portion; The diameter of the first diameter portion is smaller than the diameter of the second diameter portion, and the diameter of the flow channel outlet is smaller than the diameter of the inner opening; the first diameter portion matches the flow channel outlet, and the second diameter portion matches the inner opening.

8. The luminescent carrier processing device according to claim 6, characterized in that: The valve needle drive device includes a double-stroke cylinder and a valve assembly; The double-stroke cylinder comprises a first cylinder body, a first piston rod, a second cylinder body, and a second piston rod; the first piston rod divides the first cylinder body into a first cavity and a second cavity; the rod body of the first piston rod faces the first cavity; the second piston rod divides the second cylinder body into a third cavity and a fourth cavity; the rod body of the second piston rod faces the third cavity, and the rod body of the second piston rod extends into the second cavity and faces the first piston rod; the first piston rod is connected to a valve needle; The valve assembly is in communication with the first cavity, the second cavity, the third cavity, and the fourth cavity.

9. The luminescent carrier processing device according to claim 8, characterized in that: The valve assembly includes a first two-position five-way solenoid valve and a second two-position five-way solenoid valve; The first two-position five-way solenoid valve is connected to the first cavity and the second cavity, and is used to control the air intake of the first cavity and the air discharge of the second cavity, or to control the air discharge of the first cavity and the air intake of the second cavity; The second two-position five-way solenoid valve is connected to the third cavity and the fourth cavity, and is used to control the air intake of the third cavity and the air outlet of the fourth cavity, or to control the air outlet of the third cavity and the air intake of the fourth cavity.

10. The luminescent carrier processing device according to claim 6, characterized in that: The skin material injection screw comprises: a first screw, a first screw housing, and a first hopper, wherein the first screw is arranged in the first screw housing, the first hopper is installed on the side of the first screw housing, the first hopper is connected to the side of the first screw, and one end of the first screw housing is provided with a skin material discharge port; And / or, the core material injection screw includes: a second screw, a second screw housing, and a second hopper, the second screw is arranged in the second screw housing, the second hopper is installed on the side of the second screw housing, the second hopper is connected to the side of the second screw, and the second screw housing has core material discharge ports at both ends.

11. A vehicle lamp, comprising a light-emitting carrier, wherein the light-emitting carrier is manufactured by the light-emitting carrier processing method according to any one of claims 1 to 5, characterized in that: The light-emitting carrier comprises: a skin and a core, wherein the core is located in the skin and has suspended bubbles; The vehicle lamp further comprises: a light source, a light guide, light guide teeth, and an optical pattern, wherein the light guide teeth are arranged on the light guide, and the optical pattern is arranged on the light emitting carrier; wherein the light source transmits light to the light guide, and the light guide refracts the light from the light guide teeth to the light emitting carrier, and then refracts uniform light from the optical pattern.

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