Aspheric lens forming device facilitating lens falling

Abstract

The aspherical lens forming device comprises a base, a lower die arranged on the base and an upper die matched with the lower die, the base is further provided with at least two sets of lifting assemblies, and the lifting assemblies are connected with the two sides of the opposite angles of the upper die respectively and used for driving the upper die to descend to be matched with the lower die in an abutting mode and ascend to be disengaged from the lower die; one end of the lower die is rotationally connected with the base, and the base is provided with a driving assembly used for driving the lower die to shake at high frequency after rotating and inclining. Through cooperative work of the lifting assembly and the driving assembly, the lens can be quickly and effectively separated from the mold, and complexity and time cost of manual operation are reduced; the two lifting assemblies are connected with the two sides of the opposite angles of the upper die, the stability of the upper die in the lifting process can be guaranteed, the upper die is prevented from inclining or deviating in the lifting process, and the lens forming precision and quality are guaranteed. Therefore, when the upper die descends to be abutted against and matched with the lower die, the stress is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of lens processing equipment, and more particularly to an aspheric lens forming device which is convenient for lens shedding. Background Art

[0002] Lenses, also known as optical lenses, refer to transparent materials with one or more curved surfaces made of optical materials such as glass or resin. They can be used in structures such as lighting fixtures and display modules.

[0003] Currently, injection molding is generally used to process aspheric lenses. This involves injecting molten glass or plastic into a mold and then cooling it to form the lens. Specifically, the heated, melted glass or plastic is injected into the mold cavity under high pressure by an injection molding machine. After cooling and solidification, the desired lens molded part is obtained.

[0004] However, in traditional aspheric lens molding equipment, the lens often faces difficulty in removing after molding. This is mainly due to strong adhesion between the lens and the mold, or the lens's positioning in the mold is not conducive to smooth removal. To solve this problem, traditional methods often use tools such as ejectors to assist in ejecting the lens from the mold. However, this method is not only complex and time-consuming, but also highly susceptible to damage to the lens' molded surface during the ejection process, which in turn affects the quality and performance of the lens.

[0005] In view of this, it is indeed necessary to provide a technical solution to the above problems. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide an aspheric lens forming device which is convenient for lens shedding in view of the above-mentioned defects of the prior art.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] An aspheric lens molding device that facilitates lens removal is constructed, comprising a base, a lower mold arranged on the base, and an upper mold cooperating with the lower mold. The base is also provided with at least two sets of lifting components, which are respectively connected to the diagonal sides of the upper mold, and are used to drive the upper mold to descend and abut against the lower mold, and to rise and disengage from the lower mold; one end of the lower mold is rotatably connected to the base, and the base is provided with a driving component for driving the lower mold to rotate and tilt and then dither at a high frequency.

[0009] As an improvement to the aspheric lens molding device, a rotating shaft is provided at the bottom of the lower mold, and a bearing seat for mounting the rotating shaft is provided on the base.

[0010] As an improvement to the aspheric lens molding device, the driving assembly includes a driver arranged on the base, the driver is connected to a contact plate, the contact plate has an inclined portion and a wavy transmission portion; a fixed rod is provided at the bottom of the lower mold, the driver is used to drive the contact plate to reciprocate, and the fixed rod cooperates with the inclined portion and the transmission portion to drive one end of the lower mold to lift and shake.

[0011] As an improvement to the aspheric lens molding device, a flat portion is provided on at least one side of the contact plate.

[0012] As an improvement to the aspheric lens molding device, a support seat is provided at the bottom of the base, and the support seat cooperates with the bottom of the lower mold to support the lower mold when it is in a horizontal state.

[0013] As an improvement to the aspheric lens molding device, one group of the lifting components includes a lifting plate and a motor arranged on the base, the motor is connected to a threaded rod, the lifting plate has a threaded hole and is connected to the upper mold, the threaded rod is inserted into the threaded hole for engagement, and the motor is used to drive the threaded rod to rotate through the lifting plate to enable the upper mold to perform lifting and lowering movements.

[0014] As an improvement to the aspheric lens molding device, the lifting plate has a limiting plane, and when the upper mold and the lower mold are in abutment with each other, the limiting plane is simultaneously in contact with the upper mold and the lower mold.

[0015] As an improvement to the aspheric lens forming device, the lifting plate and the upper mold are detachably connected.

[0016] As an improvement to the aspheric lens molding device, the lower mold has a cavity, and the upper mold has a molding block that cooperates with the cavity.

[0017] As an improvement to the aspherical lens molding device, the fixing rod has a roller portion, and the fixing rod is in contact with the contact plate via the roller portion.

[0018] The beneficial effect of the present invention is that: the lifting and lowering movement of the upper mold is first controlled by the lifting component to break away from the lower mold, thereby releasing the lens, and then the driving component drives one end of the lower mold to lift and shake it; the lifting and shaking action of the lower mold helps to make the lens in the lower mold fall off directly, or at least makes the lens shift in the mold cavity and partially protrude outward, which is convenient for the staff to use tools to clamp and remove it, and there is no need to use a pin to eject the lens, avoiding damage to the lens surface during the ejection process.

[0019] In addition, the connection between the two sets of lifting components and the diagonal sides of the upper mold can ensure the stability of the upper mold during the lifting process, prevent the upper mold from tilting or shifting during lifting, thereby ensuring the accuracy and quality of lens molding; and can make the upper mold more evenly stressed when it descends and abuts against the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 It is the main view of the utility model;

[0023] Figure 3 It is a side view of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the drive assembly of the utility model;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the upper mold of the utility model in an ascending state;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the lower mold of the utility model in a lifted state;

[0027] Figure 7 This is a front view of the lower die of the utility model in a lifted state;

[0028] Figure 8 It is a three-dimensional structural diagram of the lifting plate of the utility model.

[0029] In the figure: 1. Base; 11. Support seat; 2. Lower mold; 21. Cavity; 3. Upper mold; 31. Molding protrusion; 4. Lifting assembly; 41. Lifting plate; 411. Threaded hole; 412. Limiting plane; 42. Motor; 43. Threaded rod; 5. Driving assembly; 51. Driver; 52. Contact plate; 521. Inclined portion; 522. Transmission portion; 523. Straight portion; 53. Fixed rod; 531. Roller portion; 6. Rotating shaft; 7. Bearing seat. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 、 Figure 2 and Figure 3 As shown, an aspheric lens molding device that facilitates lens removal includes a base 1, a lower mold 2 arranged on the base 1, and an upper mold 3 cooperating with the lower mold 2. The base 1 is also provided with at least two sets of lifting components 4, which are respectively connected to the diagonal sides of the upper mold 3, and are used to drive the upper mold 3 to descend and abut against the lower mold 2, and to rise and disengage from the lower mold 2; one end of the lower mold 2 is rotatably connected to the base 1, and the base 1 is provided with a driving component 5, which is used to drive the lower mold 2 to rotate and tilt and then dither at a high frequency.

[0032] Specifically, the lifting and lowering movement of the upper mold 3 is controlled by the lifting assembly 4 on the base 1. The lifting assembly 4 is connected to the diagonal sides of the upper mold 3, driving the upper mold 3 to descend and tightly abut against the lower mold 2 to perform lens molding and pressing. When the lens needs to be removed after molding, the lifting assembly 4 drives the upper mold 3 to rise again, disengaging from the lower mold 2, thereby releasing the lens. When the upper mold 3 rises and disengages from the lower mold 2, since one end of the lower mold 2 is rotatably connected to the base 1, the driving assembly 5 on the base 1 drives one end of the lower mold 2 to lift and then shake it. The lifting and shaking action of the lower mold 2 helps to make the lens in the lower mold 2 fall off directly, or at least shift the lens in the mold cavity, partially protruding outward, making it easier for the staff to use tools to clamp and remove it, without the need to use a pin to eject the lens, thus avoiding damage to the lens surface during the ejection process. Through the coordinated work of the lifting assembly 4 and the driving assembly 5, the lens can be separated from the mold quickly and effectively, reducing the complexity and time cost of manual operation; and the connection between the two sets of lifting assemblies 4 and the diagonal sides of the upper mold 3 can ensure the stability of the upper mold 3 during the lifting process, prevent the upper mold 3 from tilting or shifting during lifting, thereby ensuring the accuracy and quality of the lens molding; and can make the upper mold 3 more evenly stressed when it descends and abuts against the lower mold 2.

[0033] In some embodiments of the present application, a rotating shaft 6 is provided at the bottom of the lower mold 2, and a bearing seat 7 is provided on the base 1 for mounting the rotating shaft 6. The rotating shaft 6 provided at the bottom of the lower mold 2 cooperates with the bearing seat 7 mounted on the base 1 to form a rotatable connection structure; when the drive assembly 5 moves, the lower mold 2 rotates about the rotating shaft 6, allowing the lower mold 2 to tilt at a certain angle and vibrate at a high frequency on the base 1.

[0034] In some embodiments of the present application, Figure 4 As shown, the driving assembly 5 includes a driver 51 arranged on the base 1, and the driver 51 is connected to the contact plate 52, and the contact plate 52 has an inclined portion 521 and a wavy transmission portion 522; a fixed rod 53 is provided at the bottom of the lower mold 2, and the driver 51 is used to drive the contact plate 52 to reciprocate, and the fixed rod 53 cooperates with the inclined portion 521 and the transmission portion 522 to drive one end of the lower mold 2 to lift and shake.

[0035] Specifically, since the contact plate 52 has an inclined portion 521 and a wavy transmission portion 522, when the driver 51 drives the contact plate 52 to reciprocate, the fixing rod 53 will rise along the inclined portion 521, and then move up and down along the wavy transmission portion 522, thereby driving one end of the lower mold 2 to lift and generate high-frequency jitter; the lifting action causes the lens to be displaced in the mold cavity, and the jittering action helps the lens to separate from the edge of the mold and fall off.

[0036] Through the reciprocating motion of the contact plate 52 and the design of the wavy transmission part 522, the lower mold 2 can be efficiently driven to be lifted and shaken, so that the lens can be quickly removed from the mold, thereby improving production efficiency.

[0037] In some embodiments of the present application, a flat portion 523 is provided on one side of the contact plate 52. Specifically, when the lower mold 2 is horizontal, the fixing rod 53 contacts the flat portion 523 of the contact plate 52. Maintaining the lower mold 2 horizontally is a crucial requirement during the lens molding process. The contact between the fixing rod 53 and the flat portion 523 of the contact plate 52 ensures that the lower mold 2 remains horizontal during the lens molding process, preventing mold tilt or shaking from affecting lens molding quality.

[0038] In some embodiments of the present application, a support base 11 is provided at the bottom of the base 1. The support base 11 cooperates with the bottom of the lower mold 2 to support the lower mold 2 when it is in a horizontal state. Specifically, the support base 11 provided at the bottom of the base 1 is provided to form a good fit with the bottom of the lower mold 2. When the lower mold 2 is in a horizontal state, the support base 11 can provide effective support force to prevent the lower mold 2 from deforming or shifting due to gravity or external forces, thereby maintaining the horizontal state of the lower mold 2.

[0039] In some embodiments of the present application, Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, one of the lifting assemblies 4 includes a lifting plate 41 and a motor 42 mounted on a base 1. The motor 42 is connected to a threaded rod 43. The lifting plate 41 has a threaded hole 411 and is connected to the upper mold 3. The threaded rod is inserted into the threaded hole 411 and engages with the motor 42. The motor 42 is used to drive the threaded rod to rotate through the lifting plate 41, thereby lifting the upper mold 3. Specifically, the motor 42 serves as a power source and is mounted on the base 1 and is connected to the threaded rod 43 for transmission. When the motor 42 is started, it outputs power and drives the threaded rod 43 to rotate. Due to the meshing action of the threads, the lifting plate 41 is pushed up and down along the direction of the threaded rod 43. The lifting plate 41 is fixedly connected to the upper mold 3. Therefore, when the lifting plate 41 moves up and down, it also drives the upper mold 3 to move up and down. By controlling the speed and rotation direction of the motor 42, the rotation speed and direction of the threaded rod 43 can be precisely controlled, thereby achieving precise control of the lifting height and speed of the lifting plate 41 and the upper mold 3.

[0040] In some embodiments of the present application, the lifting plate 41 has a limiting plane 412. When the upper mold 3 and the lower mold 2 are in abutment with each other, the limiting plane 412 is simultaneously in contact with the upper mold 3 and the lower mold 2. Specifically, the limiting plane 412 is in contact with the upper mold 3. As the upper mold 3 descends, the limiting plane 412 gradually approaches the lower mold 2, and finally, when they are in abutment with each other, it is simultaneously in contact with the upper mold 3 and the lower mold 2. The upper mold 3 and the lower mold 2 are limited in position to ensure that the upper mold 3 and the lower mold 2 are aligned with each other, ensuring precise alignment between the two, thereby improving processing accuracy and product quality.

[0041] In some embodiments of the present application, the lifting plate 41 is detachably connected to the upper mold 3. This detachable connection allows the lifting plate 41 and the upper mold 3 to be quickly and conveniently separated and reassembled when needed, effectively reducing downtime when the upper mold 3 needs to be replaced or maintained, thereby improving production efficiency.

[0042] In some embodiments of the present application, the lower mold 2 has a cavity 21, and the upper mold 3 has a molding block 31 that cooperates with the cavity 21. Specifically, the cavity 21 inside the lower mold 2 is set according to the shape and size of the product to be processed. The cavity 21 provides the necessary space for product molding, ensuring that the material can be filled and solidified into the desired shape during the molding process. The molding block 31 on the upper mold 3 is tightly matched with the cavity 21 of the lower mold 2. During the molding process, the molding block 31 will be pressed into the cavity 21 of the lower mold 2, pressurizing and shaping the material filled therein. When the upper and lower molds 2 are closed, the molding block 31 of the upper mold 3 will be pressed into the cavity 21 of the lower mold 2, pressurizing the material filled therein. As pressure is applied and time passes, the material will gradually solidify and fill the entire cavity 21, eventually forming the desired product shape.

[0043] In some embodiments of the present application, the driver 51 is an electric push rod.

[0044] In other embodiments, the driver 51 may also be a cylinder.

[0045] In some embodiments of the present application, the fixed rod 53 includes a roller portion 531, which contacts the contact plate 52 via the roller portion 531. Specifically, the roller portion 531 on the fixed rod 53 is composed of a rolling bearing, which includes an inner ring, an outer ring, rolling elements, and a retaining cage. The rolling elements roll between the inner and outer rings, thereby converting sliding friction into rolling friction. When the fixed rod 53 contacts the contact plate 52 via the roller portion 531, the sliding friction that would otherwise occur is greatly reduced, and the resistance of rolling friction is much smaller than that of sliding friction.

[0046] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. An aspheric lens molding device that facilitates lens removal, characterized in that: It includes a base, a lower mold arranged on the base and an upper mold cooperating with the lower mold. The base is also provided with at least two sets of lifting components, which are respectively connected to the diagonal sides of the upper mold, and are used to drive the upper mold to descend and abut against the lower mold, and to rise and disengage from the lower mold; one end of the lower mold is rotatably connected to the base, and the base is provided with a driving component for driving the lower mold to rotate and tilt and then jitter at a high frequency.

2. The aspheric lens molding device according to claim 1, wherein: The bottom of the lower mold is provided with a rotating shaft, and the base is provided with a bearing seat for installing the rotating shaft.

3. The aspheric lens molding device according to claim 2, wherein: The driving assembly includes a driver arranged on the base, the driver is connected to a contact plate, the contact plate has an inclined portion and a wavy transmission portion; a fixed rod is provided at the bottom of the lower mold, the driver is used to drive the contact plate to reciprocate, and the fixed rod cooperates with the inclined portion and the transmission portion to drive one end of the lower mold to lift and shake.

4. The aspheric lens molding device according to claim 3, wherein: At least one side of the contact plate is provided with a straight portion.

5. The aspheric lens molding device according to claim 4, characterized in that: A support seat is provided at the bottom of the base, and the support seat cooperates with the bottom of the lower mold to support the lower mold when it is in a horizontal state.

6. The aspheric lens molding device according to any one of claims 1 to 5, characterized in that: One group of the lifting components includes a lifting plate and a motor arranged on the base, the motor is connected to a threaded rod, the lifting plate has a threaded hole and is connected to the upper mold, the threaded rod is inserted into the threaded hole for engagement, and the motor is used to drive the threaded rod to rotate through the lifting plate to enable the upper mold to perform lifting and lowering movements.

7. The aspherical lens molding device according to claim 6, wherein: The lifting plate has a limiting plane, and when the upper mold and the lower mold are in abutment with each other, the limiting plane is simultaneously in contact with the upper mold and the lower mold.

8. The aspherical lens molding device according to claim 6, wherein: The lifting plate and the upper mold are detachably connected.

9. The aspherical lens molding device according to claim 6, wherein: The lower mold has a cavity, and the upper mold has a forming block matched with the cavity.

10. The aspheric lens molding device according to claim 3, wherein: The fixing rod has a roller portion, and the fixing rod is in contact with the contact plate through the roller portion.

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