Spectacle frame double-color forming mold

Abstract

The utility model discloses a two-color forming mold for a spectacle frame, which belongs to the technical field of molds, and is characterized by comprising a movable mold base, a fixed mold base, an injection molding opening, a forming cavity arranged between the movable mold base and the fixed mold base; the clamping mechanisms are mounted on the movable mold base and the fixed mold base correspondingly, and the clamping mechanisms are used for clamping metal cores; the two injection molding openings are formed in the fixed mold base; wherein the clamping mechanism comprises a first clamping piece and a second clamping piece, the first clamping piece is installed on the movable mold base, the second clamping piece is installed on the fixed mold base, the movable mold base is provided with a first hot runner and a second hot runner, and the first hot runner and the second hot runner independently correspond to the two injection molding openings respectively. The double-color spectacle frame with different colors on the inner side and the outer side can be formed.

Description

Technical Field

[0001] This application belongs to the technical field of molds, and particularly relates to a two-color forming mold for spectacle frames. Background Art

[0002] Glasses play an increasingly important role in people's life. In our daily life, glasses are not only a necessity for protecting eyes but also a beauty decoration. As an important part of glasses, especially with the development of glasses becoming jewelry-like, fashion, bright colors, and elegant shapes have become important standards pursued by the majority of young people. While pursuing comfort, people also have higher and higher requirements for their beauty.

[0003] The existing Chinese patent with the publication number CN109591260B discloses an injection mold for multi-color spectacle frames, which relates to the technical field of injection molds. The key points of its technical solution are: including an upper mold and a lower mold, a hot runner and a positioning cavity for placing temple pieces are provided between the upper mold and the lower mold, and cavities for forming different-color parts of anti-slip sections and bending sections are also provided on the upper mold and the lower mold. The hot runner communicates with the cavities. An injection port for the injection molding machine to inject is opened on the upper mold, and the injection port communicates with the hot runner. The length direction of the hot runner in the upper mold is along the vertical direction.

[0004] Although the above-mentioned mold can form spectacle frames of different colors, the different colors of the formed spectacle frames are in sections. Now, it is necessary to improve the mold for different colors on the inner and outer sides of the spectacle frame, and there is a metal core inside the spectacle frame to increase the structural strength. Summary of the Utility Model

[0005] The purpose of this application is to provide a two-color forming mold for spectacle frames to solve the above-mentioned existing technical problems and be able to form spectacle frames with different colors on the inner and outer sides.

[0006] This application provides a two-color forming mold for spectacle frames, including a moving mold base, a fixed mold base, and injection ports, including:

[0007] A forming cavity, placed between the moving mold base and the fixed mold base;

[0008] A clamping mechanism, respectively installed on the moving mold base and the fixed mold base, and the clamping mechanism is used for clamping the metal core;

[0009] Injection ports, there are two and they are placed on the fixed mold base;

[0010] Among them, the clamping mechanism includes a first clamping member and a second clamping member. The first clamping member is installed on the moving mold base, the second clamping member is installed on the fixed mold base, the moving mold base is provided with a first hot runner and a second hot runner, and the first hot runner and the second hot runner respectively correspond to the two injection ports individually.

[0011] The eyeglass frame is formed in a molding cavity, and a metal core is clamped by a first clamp and a second clamp on a clamping mechanism. The cross-section of the metal core is I-shaped and is compatible with the first clamp and the second clamp. At the same time, the molding cavity is partitioned by the first clamp and the second clamp. The inner side or the outer side of the eyeglass frame is first injection molded in half of the molding cavity, and then the first clamp and the second clamp are controlled to move and the partition of the molding cavity is released by the clamping mechanism. The other half of the eyeglass frame is continuously injection molded, and the injection material flows through the injection port into the first hot runner and the second hot runner, and the first hot runner and the second hot runner correspond to the inner and outer sides of the eyeglass frame respectively, so that the two colors of injection plastics do not interfere with each other when flowing.

[0012] Furthermore, the ejection mechanism comprises:

[0013] The telescopic seat is respectively installed and connected with the first clamping member and the second clamping member;

[0014] The piston is installed and connected with the telescopic seat;

[0015] The telescopic chamber is respectively disposed on the movable die seat and the fixed die seat and is adapted to the piston;

[0016] A rotating mechanism, used for controlling the rotation of the first clamping member and the second clamping member;

[0017] Wherein, the first clamping member is provided with a first mating surface and a second mating surface, and the second clamping member is provided with a third mating surface and a fourth mating surface.

[0018] The first clamping member and the second clamping member are installed on corresponding telescopic seats, and are connected to a control valve through a telescopic cavity. The piston placed in the telescopic cavity is driven by air pressure to move, so as to control the telescopic movement of the first clamping member and the second clamping member. The first clamping member and the second clamping member are controlled to rotate through a rotating mechanism. The first mating surface and the third mating surface correspond to the metal core, and the second mating surface and the fourth mating surface correspond to the outer wall surface of the glasses frame. When half of the glasses frame is injected, the first clamping member and the second clamping member are controlled by the ejection mechanism to shrink first and then rotate, so as to ensure that the other half of the glasses frame can also complete the injection molding.

[0019] Furthermore, the rotating mechanism comprises:

[0020] The rotating shaft is respectively installed and connected with the first clamping member and the second clamping member, and is hinged with the telescopic seat;

[0021] The motor is installed on the telescopic seat and is connected to the rotating shaft.

[0022] The rotating shaft is connected to the corresponding first clamping member and second clamping member, ensuring that the first clamping member and the second clamping member can rotate with the corresponding rotating shaft. It is convenient to drive the rotation through the motor, realizing the rotational movement control of the rotating mechanism for the corresponding first clamping member and second clamping member.

[0023] Further, the ejection mechanism includes:

[0024] A limit seat, which is movably installed on the telescopic seat and corresponds to the telescopic cavity;

[0025] First electromagnets, which are respectively installed on the limit seat and the telescopic seat and correspond to each other.

[0026] The limit seat is controlled by the interaction between the first electromagnets. When the first clamping member and the second clamping member are used for injection molding, the limit seat is controlled to eject, so that the piston abuts against the limit seat to limit the limit seat. When the spectacle frame needs to be demolded after being formed, the limit seat contracts, and the piston moves under the air pressure in the telescopic cavity to make the first clamping member and the second clamping member continue to extend outwards, facilitating the separation of the spectacle frame placed on the moving mold base or the fixed mold base.

[0027] Further, it further includes:

[0028] Cooling pipes, which are respectively installed on the moving mold base and the fixed mold base.

[0029] By circulating the coolant flowing in the cooling pipes, the forming speed of the spectacle frame after injection molding is accelerated.

[0030] Further, the first hot runner is provided with a plurality of first branch runners, and the second hot runner is provided with a plurality of second branch runners.

[0031] By providing a plurality of first branch runners and second branch runners, multiple spectacle frames can be formed on a pair of molds, improving production efficiency.

[0032] The beneficial effects of this application are:

[0033] 1. The forming cavity is partitioned by the first clamping member and the second clamping member. First, the inner side or the outer side of the spectacle frame is injection-molded in half of the forming cavity, and then the clamping mechanism controls the activities of the first clamping member and the second clamping member to release the partition of the forming cavity, and the other half of the spectacle frame is injection-molded by continuing to inject into the other half.

[0034] 2. The first clamping member and the second clamping member are controlled to contract and rotate by the ejection mechanism. When injection molding, the first clamping member and the second clamping member are respectively adjusted when half of the frame is formed and when the whole frame is formed.

[0035] 3. When the spectacle frame is to be demolded after being formed, the limiting seat contracts, and the piston moves under the action of the air pressure in the telescopic cavity, so that the first clamping member and the second clamping member continue to extend outwards, facilitating the detachment of the spectacle frame placed on the moving mold base or the fixed mold base. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of the molding die of the present application;

[0037] Figure 2 is a partial structural schematic diagram of the clamping mechanism of the present application;

[0038] Figure 3 For the present application Figure 2 is an enlarged view of part A;

[0039] In the figure, reference numerals: 100, moving mold base; 110, first hot runner; 111, first branch runner; 120, second hot runner; 121, second branch runner; 200, fixed mold base; 210, injection port; 300, molding cavity; 400, clamping mechanism; 401, first mating surface; 402, second mating surface; 403, third mating surface; 404, fourth mating surface; 410, first clamping member; 420, second clamping member; 430, telescopic seat; 440, piston; 450, telescopic cavity; 460, rotating shaft; 470, limiting seat; 480, first electromagnet; 500, cooling pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0041] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. generally belong to the same category, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0042] The embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0043] Embodiment 1:

[0044] As Figure 1 , Figure 2 shown, an embodiment of the present application provides a two-color molding die for an eyeglass frame, including a moving die base 100, a fixed die base 200, and an injection port 210, including:

[0045] A molding cavity 300 is disposed between the moving die base 100 and the fixed die base 200;

[0046] A clamping mechanism 400 is respectively installed on the moving die base 100 and the fixed die base 200, and the clamping mechanism 400 is used for clamping a metal core;

[0047] There are two injection ports 210, which are disposed on the fixed die base 200;

[0048] Among them, the clamping mechanism 400 includes a first clamping member 410 and a second clamping member 420. The first clamping member 410 is installed on the moving die base 100, and the second clamping member 420 is installed on the fixed die base 200. The moving die base 100 is provided with a first hot runner 110 and a second hot runner 120, and the first hot runner 110 and the second hot runner 120 respectively correspond to the two injection ports 210 individually.

[0049] The eyeglass frame is molded in the molding cavity 300. The metal core is clamped by the first clamping member 410 and the second clamping member 420 on the clamping mechanism 400. The cross section of the metal core is in an I shape and is adapted to the first clamping member 410 and the second clamping member 420. At the same time, the molding cavity 300 is partitioned by the first clamping member 410 and the second clamping member 420. First, the inner side or the outer side of the eyeglass frame is injection-molded in half of the molding cavity 300, and then the clamping mechanism 400 controls the activities of the first clamping member 410 and the second clamping member 420 to release the partition of the molding cavity 300. The other half of the eyeglass frame is injection-molded by continuing to inject into the other half. The injection material flows into the first hot runner 110 and the second hot runner 120 through the injection port 210. The first hot runner 110 and the second hot runner 120 respectively correspond to the inner and outer sides of the eyeglass frame, so that the two-color injection materials do not interfere with each other during flow.

[0050] Embodiment 2:

[0051] As Figure 2 , Figure 3 shown, an embodiment of the present application provides a two-color molding die for an eyeglass frame. In addition to including the above technical features, further, the ejection mechanism includes:

[0052] A telescopic seat 430 is respectively installed and connected to the first clamping member 410 and the second clamping member 420;

[0053] A piston 440 is installed and connected to the telescopic seat 430;

[0054] The telescopic cavity 450 is respectively disposed on the moving die base 100 and the fixed die base 200 and is adapted to the piston 440;

[0055] The rotating mechanism is used to control the rotation of the first clamping member 410 and the second clamping member 420;

[0056] Wherein, the first clamping member 410 is provided with a first mating surface 401 and a second mating surface 402, and the second clamping member 420 is provided with a third mating surface 403 and a fourth mating surface 404.

[0057] The first clamping member 410 and the second clamping member 420 are installed on the corresponding telescopic seats 430, connected to the control valve through the telescopic cavity 450, and the piston 440 placed in the telescopic cavity 450 is driven by air pressure to move, so as to control the telescopic movement of the first clamping member 410 and the second clamping member 420. The rotation of the first clamping member 410 and the second clamping member 420 is controlled by the rotating mechanism. The first mating surface 401 and the third mating surface 403 correspond to the metal core, and the second mating surface 402 and the fourth mating surface 404 correspond to the outer wall surface of the spectacle frame. When half of the spectacle frame is injection molded, the first clamping member 410 and the second clamping member 420 are first controlled to contract by the ejecting mechanism, and then rotate, ensuring that the other half of the spectacle frame can also be injection molded.

[0058] Further, the rotating mechanism includes:

[0059] The rotating shaft 460 is respectively installed and connected to the first clamping member 410 and the second clamping member 420, and is hinged to the telescopic seat 430;

[0060] The motor is installed on the telescopic seat 430 and is installed and connected to the rotating shaft 460.

[0061] The connection between the rotating shaft 460 and the corresponding first clamping member 410 and second clamping member 420 ensures that the first clamping member 410 and the second clamping member 420 can rotate with the corresponding rotating shaft 460. The motor facilitates driving the rotation, and realizes the rotation control of the corresponding first clamping member 410 and second clamping member 420 by the rotating mechanism.

[0062] Further, the ejecting mechanism includes:

[0063] The limit seat 470 is movably installed on the telescopic seat 430 and corresponds to the telescopic cavity 450;

[0064] The first electromagnet 480 is respectively installed on the limit seat 470 and the telescopic seat 430 and corresponds to each other.

[0065] The limit seat 470 is controlled by the interaction between the first electromagnets 480. When the first clamping member 410 and the second clamping member 420 are used for injection molding, the limit seat 470 is controlled to pop out, so that the piston 440 abuts against the limit seat 470 to limit the limit seat 470. When the spectacle frame needs to be demolded after molding, the limit seat 470 contracts, and the piston 440 moves under the air pressure in the telescopic cavity 450 to make the first clamping member 410 and the second clamping member 420 continue to extend outwards, facilitating the separation of the spectacle frame placed on the moving mold base 100 or the fixed mold base 200.

[0066] Embodiment 3:

[0067] As Figure 1 shown, the embodiment of the present application provides a two-color molding die for a spectacle frame. In addition to including the above technical features, further, it further includes:

[0068] Cooling pipes 500, which are respectively installed on the moving mold base 100 and the fixed mold base 200.

[0069] By circulating the coolant in the cooling pipes 500, the molding speed of the spectacle frame after injection molding is accelerated.

[0070] Further, the first hot runner 110 is provided with a plurality of first branch runners 111, and the second hot runner 120 is provided with a plurality of second branch runners 121.

[0071] By providing a plurality of first branch runners 111 and second branch runners 121, a plurality of spectacle frames can be molded on a single die, improving production efficiency.

[0072] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the methods and devices in the embodiments of the present application are not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0073] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A two-color molding mold for eyeglass frames, comprising a movable mold base (100) and a fixed mold base (200), characterized in that: include: The molding cavity (300) is disposed between the movable mold base (100) and the fixed mold base (200); A clamping mechanism (400) is respectively installed on the movable die base (100) and the fixed die base (200), and the clamping mechanism (400) is used to clamp the metal core; Two injection ports (210) are provided and are placed on the fixed mold base (200); The clamping mechanism (400) comprises a first clamping member (410) and a second clamping member (420); the first clamping member (410) is mounted on a movable mold base (100); the second clamping member (420) is mounted on a fixed mold base (200); the movable mold base (100) is provided with a first hot runner (110) and a second hot runner (120); the first hot runner (110) and the second hot runner (120) respectively correspond to two injection ports (210).

2. The double-color molding mold for eyeglass frames according to claim 1, characterized in that: The clamping mechanism (400) comprises: The telescopic seat (430) is respectively installed and connected to the first clamping member (410) and the second clamping member (420); The piston (440) is installed and connected with the telescopic seat (430); The telescopic chamber (450) is respectively disposed on the movable die seat (100) and the fixed die seat (200) and is adapted to the piston (440); A rotating mechanism, used to control the rotation of the first clamping member (410) and the second clamping member (420); Wherein, the first clamping member (410) is provided with a first mating surface (401) and a second mating surface (402), and the second clamping member (420) is provided with a third mating surface (403) and a fourth mating surface (404).

3. The double-color molding mold for eyeglass frames according to claim 2, characterized in that: The rotating mechanism comprises: The rotating shaft (460) is respectively installed and connected to the first clamping member (410) and the second clamping member (420), and is hinged to the telescopic seat (430); The motor is mounted on the telescopic seat (430) and is connected to the rotating shaft (460).

4. The double-color molding die for eyeglass frames according to claim 3, characterized in that: The clamping mechanism (400) comprises: A limiting seat (470) is movably mounted on the telescopic seat (430) and corresponds to the telescopic cavity (450); The first electromagnet (480) is respectively installed on the limiting seat (470) and the telescopic seat (430) and corresponds to each other.

5. The double-color molding die for eyeglass frames according to claim 1, characterized in that: Also includes: The cooling pipe (500) is respectively installed on the movable mold base (100) and the fixed mold base (200).

6. The double-color molding die for eyeglass frames according to claim 1, characterized in that: The first hot runner (110) is provided with a plurality of first branch runners (111), and the second hot runner (120) is provided with a plurality of second branch runners (121).

Images