Glasses frame injection molding equipment

Abstract

The invention discloses glasses frame injection molding equipment, and belongs to the technical field of injection molding, the glasses frame injection molding equipment comprises a cooling demolding groove and a supporting plate, the supporting plate is connected with an injection molding template through a magnetic lifting control piece, the injection molding template is composed of two half injection molding templates rotationally connected through a rotating hinge, and the back of each half injection molding template is provided with an air bag layer; a mirror frame injection molding cavity is formed in the half injection molding mold plate, and a demolding forming piece is arranged in the mirror frame injection molding cavity. The centrifugal shaking motor drives the mold to rotate, injection molding liquid is accelerated to flow through centrifugal force, the problem of slow flowing caused by a long path is solved especially for far-end areas such as glasses legs, the centrifugal force forms high pressure in a glasses leg injection molding cavity, the material filling density is enhanced, it is ensured that the strength of the glasses legs meets the use requirement, and the injection molding quality of a glasses frame is improved; and the mold closing trigger block is matched with the pressing block, so that the injection molding inner core disc is accurately positioned, a uniform mold cavity structure is formed, the molding defect caused by flow path difference is avoided, and the product consistency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and particularly relates to an injection molding device for spectacle frames. Background Art

[0002] The core advantages of an integrated spectacle frame lie in its simplified structure, light weight and durability, and optimized designs for different scenarios (sports, protection, daily use).

[0003] With the continuous update of materials, some spectacle frames made of new materials are becoming increasingly popular in the market. During the manufacturing process of integrated spectacle frames, they are mainly integrally formed by injection molding. However, due to the shape limitations of the spectacle, there is a large distance between the frame and the temple. When injecting, the flow rate of the material injection liquid is slow, resulting in different molding times and thus quality defects. Moreover, when the temple is in use, higher strength is required. When the injection liquid flows to the temple, the pressure decreases due to the path, resulting in insufficient injection pressure and affecting the molding density of the temple. Based on this, an injection molding device for spectacle frames is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that when injecting, the flow rate of the material injection liquid is slow, resulting in different molding times and quality defects, and when the temple is in use, higher strength is required. When the injection liquid flows to the temple, the pressure decreases due to the path, resulting in insufficient injection pressure and affecting the molding density of the temple, and to propose an injection molding device for spectacle frames.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] An injection molding device for spectacle frames includes a cooling and demolding tank and a support plate. The support plate is connected with an injection molding template through a magnetic lifting control member. The injection molding template is composed of two half injection molding templates rotatably connected by a rotating hinge. An airbag layer is arranged on the back of the half injection molding template. A frame injection cavity is opened in the half injection molding template, and a demolding and forming member is arranged in the frame injection cavity;

[0007] A centrifugal shaking motor is arranged on the support plate. The centrifugal shaking motor is connected with a centrifugal driving rotating shaft through a worm and worm gear member. The centrifugal driving rotating shaft is connected with an injection molding base through a hanging ear fixing member. An injection head communicated with the injection molding template is arranged at the bottom of the injection molding base. An injection liquid conveying seat connected with the injection head is arranged on the injection molding base. The injection liquid conveying seat is used for high-pressure conveying of the injection liquid. Both sides of the injection molding base are connected with the half injection molding template through a magnetic control locking member.

[0008] As a preferred solution, the magnetic lifting control member includes a lifting rail base provided on the side wall of the support plate. A hydraulic push rod is provided at the bottom of the lifting rail base. The output end of the hydraulic push rod penetrates into the lifting rail base and is fixedly connected with a lifting magnetic seat.

[0009] As a preferred solution, a bearing cross column is connected to the end of the rotating hinge. A magnetic bearing block adapted to the lifting rail base is fixedly connected to the end of the bearing cross column. The magnetic bearing block is magnetically attracted to the lifting magnetic seat.

[0010] As a preferred solution, the demolding and forming member includes a T-shaped semi-circular groove opened on the inner wall of the semi-injection mold plate. A limiting disk is connected to the inner wall of the T-shaped semi-circular groove through a return spring. An injection inner core disk is fixedly connected to the top of the limiting disk. A mold closing trigger block is provided at the bottom of the limiting disk. A mold closing pressure block adapted to the mold closing trigger block is provided on the other side of the semi-injection mold plate.

[0011] As a preferred solution, the worm and worm gear member includes a worm shaft connected to the output end of the centrifugal shaking motor. The centrifugal driving rotating shaft is rotatably provided on the support plate. A worm gear meshed with the worm shaft is fixedly connected to the outer side wall of the centrifugal driving rotating shaft.

[0012] As a preferred solution, semi-injection holes are opened on the semi-injection mold plate. After the two semi-injection holes are closed, they are adapted to the injection head.

[0013] As a preferred solution, the magnetic control locking member includes mold closing pressure plates oppositely arranged at the bottom of the injection base. A magnetic control clamping member is provided on the mold closing pressure plate. A bayonet adapted to the magnetic control clamping member is opened on the side wall of the semi-injection mold plate.

[0014] As a preferred solution, the centrifugal driving rotating shaft is hollow inside and is communicated with the injection liquid conveying seat. One end of the centrifugal driving rotating shaft is connected to the injection device.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The present invention drives the mold to rotate through the centrifugal shaking motor, and uses the centrifugal force to accelerate the flow of the injection liquid. Especially for the distal regions such as the temple, it overcomes the problem of slow flow caused by the long path. The centrifugal force forms a high pressure in the temple injection cavity, enhances the filling density of the material, and ensures that the strength of the temple meets the use requirements, so as to improve the injection quality of the spectacle frame. The cooperation of the mold closing trigger block and the pressure block accurately positions the injection inner core disk, forms a uniform mold cavity structure, and avoids the forming defects caused by the difference in the flow path, thereby improving the product consistency.

[0017] 2. The present invention realizes the automatic lifting and precise positioning of the mold through the cooperation of the magnetic lifting control part and the hydraulic push rod. The magnetic control locking ensures the stability of mold clamping, reduces manual intervention, improves the mold clamping accuracy and efficiency. The airbag layer on the back of the mold uses buoyancy to push the half template to separate in the cooling demolding groove, combined with the demolding liquid to assist cooling, avoiding product damage that may be caused by mechanical forced demolding, and at the same time accelerating the cooling and solidification process of the injection-molded spectacle frame. Description of the Drawings

[0018] Figure 1 It is a schematic assembly structure diagram of an injection molding device for a spectacle frame proposed by the present invention;

[0019] Figure 2 It is a schematic three-dimensional structure diagram of an injection molding device for a spectacle frame proposed by the present invention;

[0020] Figure 3 is Figure 2 an enlarged structural schematic diagram at position A in

[0021] Figure 4 It is a schematic assembly structure diagram of an injection molding template in an injection molding device for a spectacle frame proposed by the present invention;

[0022] Figure 5 It is a schematic three-dimensional structure diagram of an injection molding template in an injection molding device for a spectacle frame proposed by the present invention;

[0023] Figure 6 It is a schematic structure diagram of a half injection molding template in an injection molding device for a spectacle frame proposed by the present invention;

[0024] Figure 7 It is a schematic structure diagram of an injection molding base in an injection molding device for a spectacle frame proposed by the present invention.

[0025] In the figure: 1. Cooling demolding groove; 2. Support plate; 3. Rotating hinge; 4. Half injection molding template; 5. Airbag layer; 6. Frame injection molding cavity; 7. Centrifugal shaking motor; 8. Centrifugal drive rotating shaft; 9. Injection molding base; 10. Injection head; 11. Injection liquid delivery seat; 12. Lifting rail seat; 13. Hydraulic push rod; 14. Lifting magnetic seat; 15. Bearing cross column; 16. Magnetic bearing block; 17. T-shaped semi-circular groove; 18. Limit disk; 19. Injection inner core disk; 20. Mold clamping trigger block; 21. Mold clamping pressing block; 22. Worm gear; 23. Half injection hole; 24. Mold clamping pressing plate; 25. Magnetic control clamping part; 26. Clamping opening. Detailed Embodiment

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Example, refer to Figures 1 to 7 A plastic injection molding device for spectacle frames, including a cooling and demolding groove 1 and a support plate 2. The support plate 2 is connected with an injection molding template through a magnetic lifting control member. Further, the magnetic lifting control member includes a lifting rail seat 12 provided on the side wall of the support plate 2. A rail groove is provided on the lifting rail seat 12 for positioning the lifting magnetic seat 14. A hydraulic push rod 13 is provided at the bottom of the lifting rail seat 12. The hydraulic push rod 13 is a prior art and will not be elaborated here. The output end of the hydraulic push rod 13 penetrates into the lifting rail seat 12 and is fixedly connected with a lifting magnetic seat 14.

[0030] One end of the rotating hinge 3 is connected with a bearing cross column 15. The end of the bearing cross column 15 is fixedly connected with a magnetic bearing block 16 adapted to the lifting rail seat 12. The magnetic bearing block 16 and the lifting magnetic seat 14 are magnetically attracted to each other, and the two can achieve the effects of separation and magnetic adsorption.

[0031] The injection mold plate is composed of two half injection mold plates 4 rotatably connected by a rotating hinge 3. During the upward movement of the half injection mold plate 4, the half injection mold plate 4 will be closed under the action of gravity. An airbag layer 5 is arranged on the back of the half injection mold plate 4. After injection molding, when the airbag layer 5 is in the demolding liquid in the cooling demolding groove 1, it will drive the half injection mold plate 4 to float, realizing the demolding of the half injection mold plate 4.

[0032] A frame injection cavity 6 is provided in the half injection mold plate 4, and a demolding and forming part is arranged in the frame injection cavity 6. Further, the demolding and forming part includes a T-shaped semi-circular groove 17 opened on the inner wall of the half injection mold plate 4. A limiting disk 18 is connected to the inner wall of the T-shaped semi-circular groove 17 through a return spring. An injection inner core disk 19 is fixedly connected to the top of the limiting disk 18, and a mold closing trigger block 20 is arranged at the bottom of the limiting disk 18. A mold closing pressure block 21 adapted to the mold closing trigger block 20 is arranged on the other side of the half injection mold plate 4.

[0033] The mold closing pressure blocks 21 arranged on both sides of the bottom of the injection base 9 will, during the upward movement of the half injection mold plate 4, realize the mold closing and pressing of the half injection mold plate 4, and under the cooperation of the magneto-controlled card parts 25 and the bayonets 26 thereon, realize the locking of the mold closing pressure plate 24 to the half injection mold plate 4.

[0034] Among them, in the mold closing state, the mold closing pressure block 21 will drive the mold closing trigger block 20 to move, driving the injection inner core disk 19 to move into the frame injection cavity 6, forming the shape of an entire mold cavity. The design of this injection inner core disk 19 can facilitate the subsequent automatic demolding of the spectacle frame.

[0035] A centrifugal shaking motor 7 is arranged on the support plate 2. The centrifugal shaking motor 7 is connected to a centrifugal driving rotating shaft 8 through a worm and worm gear member. Further, the worm and worm gear member includes a worm shaft connected to the output end of the centrifugal shaking motor 7. The centrifugal driving rotating shaft 8 is rotatably arranged on the support plate 2, and a worm gear 22 meshed with the worm shaft is fixedly connected to the outer side wall of the centrifugal driving rotating shaft 8.

[0036] Adopting a worm and worm gear member to drive centrifugal rotation, the transmission is stable and the self-locking property is strong, ensuring that the rotation speed is controllable during the injection process, avoiding material splashing or pressure fluctuations.

[0037] The centrifugal driving rotating shaft 8 is connected to an injection base 9 through a hanging ear fixing member. The centrifugal driving rotating shaft 8 is hollow inside and is communicated with an injection liquid conveying seat 11. One end of the centrifugal driving rotating shaft 8 is connected to an injection device.

[0038] An injection head 10 communicated with the injection mold plate is arranged at the bottom of the injection base 9. Further, half injection holes 23 are opened on the half injection mold plate 4, and the two half injection holes 23 are adapted to the injection head 10 after mold closing.

[0039] A groove matching the rotating hinge 3 and the bearing cross column 15 is provided at the bottom of the injection molding base 9 to ensure that the upward movement of the injection molding template is not affected.

[0040] The injection molding base 9 is provided with an injection molding liquid delivery seat 11 connected to the injection molding head 10. The injection molding liquid delivery seat 11 is used for high-pressure delivery of the injection molding liquid. Both sides of the injection molding base 9 are connected to the semi-injection molding template 4 through magnetically controlled locking parts.

[0041] Furthermore, the magnetically controlled locking part includes a mold clamping plate 24 relatively arranged at the bottom of the injection molding base 9, and a magnetically controlled card 25 is arranged on the mold clamping plate 24. The magnetically controlled card 25 is a prior art and will not be described in detail here. The side wall of the semi-injection molding template 4 is provided with a bayonet 26 adapted to the magnetically controlled card 25.

[0042] When the eyeglass frame is injection molded, the hydraulic push rod 13 drives the magnetic bearing block 16 connected to the lifting magnetic seat 14 to move upward, and drives the semi-injection mold plate 4 to move upward. In the process of the semi-injection mold plate 4 moving upward, the semi-injection mold plate 4 will be molded under the action of gravity, and finally the semi-injection mold plate 4 will be moved to the injection molding base 9. At this time, the mold clamping blocks 21 arranged on both sides of the bottom of the injection molding base 9 will realize the mold clamping of the semi-injection mold plate 4 in the process of the semi-injection mold plate 4 moving upward, and the magnetic control clamping piece 25 and the bayonet 26 thereon cooperate to realize the locking of the semi-injection mold plate 4 by the mold clamping plate 24;

[0043] At this time, the injection head 10 is aligned with the semi-injection hole 23, and the injection liquid is transported to the injection liquid transport seat 11 through the injection device, and is injected into the frame injection cavity 6 through the injection head 10 through the semi-injection hole 23. At the same time, the centrifugal shaking motor 7 is controlled to drive, and the centrifugal drive shaft 8 is driven to rotate with the cooperation of the worm gear, thereby driving the injection base 9 to rotate, thereby driving the injection template to rotate. At this time, the injection liquid in the frame injection cavity 6 will be pulled fast under the action of centrifugal force. The mold trigger block 20 and the mold pressing block 21 cooperate to position the injection core disk 19 accurately, forming a uniform mold cavity structure, avoiding molding defects caused by flow path differences, improving product consistency, and thus ensuring the injection molding quality of the finished eyeglass frame;

[0044] After the injection molding is completed and the centrifugal shaking motor 7 is reset, the locking of the semi-injection mold 4 is released through the magnetic control card 25. At this time, the hydraulic push rod 13 drives the lifting magnetic seat 14 to move the injection mold downward. When the airbag layer 5 provided on the back of the semi-injection mold 4 moves into the demolding liquid in the cooling demolding groove 1, under the buoyancy of the airbag layer 5, the semi-injection mold 4 will be rotated and opened. When the two semi-injection molds 4 are rotated and demolded, the mold closing trigger block 20 and the mold closing pressure block 21 that were originally pressed against each other will be separated. Under the action of the return spring, the injection inner core disk 19 will be separated from the formed spectacle frame. At this time, under the action of the flowing water, the spectacle frame will automatically fall off from the frame injection cavity 6, realizing demolding and completing the injection molding of the spectacle frame.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An injection molding device for spectacle frames, comprising a cooling and demolding groove (1) and a support plate (2), characterized in that, The said support plate (2) is connected with an injection molding template through a magnetic lifting control member. The injection molding template is composed of two half injection molding templates (4) rotatably connected by a rotating hinge (3). An airbag layer (5) is arranged on the back of the half injection molding template (4). A frame injection cavity (6) is formed in the half injection molding template (4), and a demolding and forming member is arranged in the frame injection cavity (6). An eccentric shaking motor (7) is arranged on the support plate (2). The eccentric shaking motor (7) is connected with an eccentric driving rotating shaft (8) through a worm and worm gear member. The eccentric driving rotating shaft (8) is connected with an injection molding base (9) through a hanging ear fixing member. An injection molding head (10) communicated with the injection molding template is arranged at the bottom of the injection molding base (9). An injection liquid conveying seat (11) connected with the injection molding head (10) is arranged on the injection molding base (9). The injection liquid conveying seat (11) is used for high-pressure conveying of injection liquid. Both sides of the injection molding base (9) are connected with the half injection molding template (4) through magnetic control locking members.

2. The injection molding device for spectacle frames according to claim 1, characterized in that, The magnetic lifting control member includes a lifting rail seat (12) arranged on the side wall of the support plate (2). A hydraulic push rod (13) is arranged at the bottom of the lifting rail seat (12). The output end of the hydraulic push rod (13) penetrates into the lifting rail seat (12) and is fixedly connected with a lifting magnetic seat (14).

3. An injection molding device for spectacle frames according to claim 2, characterized in that, A bearing cross column (15) is connected to the end of the rotating hinge (3). A magnetic bearing block (16) adapted to the lifting rail seat (12) is fixedly connected to the end of the bearing cross column (15). The magnetic bearing block (16) is magnetically attracted to the lifting magnetic seat (14).

4. A spectacle frame injection molding device according to claim 1, characterized in that, The demolding and forming member includes a T-shaped semi-circular groove (17) formed in the inner wall of the half injection molding template (4). A limiting disc (18) is connected to the inner wall of the T-shaped semi-circular groove (17) through a return spring. An injection molding inner core disc (19) is fixedly connected to the top of the limiting disc (18). A mold closing trigger block (20) is arranged at the bottom of the limiting disc (18). A mold closing press block (21) adapted to the mold closing trigger block (20) is arranged on the other side of the half injection molding template (4).

5. A spectacle frame injection molding device according to claim 1, characterized in that, The worm and worm gear member includes a worm shaft connected to the output end of the eccentric shaking motor (7). The eccentric driving rotating shaft (8) is rotatably arranged on the support plate (2). A worm gear (22) meshed with the worm shaft is fixedly connected to the outer side wall of the eccentric driving rotating shaft (8).

6. The injection molding device for an eyeglass frame according to claim 1, wherein, Half injection holes (23) are formed in the half injection molding template (4). After the two half injection holes (23) are closed, they are adapted to the injection molding head (10).

7. An injection molding device for spectacle frames according to claim 1, characterized in that, The magnetic control locking member includes a mold closing pressing plate (24) oppositely arranged at the bottom of the injection molding base (9). A magnetic control clamping member (25) is arranged on the mold closing pressing plate (24). A bayonet (26) adapted to the magnetic control clamping member (25) is formed in the side wall of the half injection molding template (4).

8. An injection molding device for spectacle frames according to claim 1, characterized in that, The eccentric driving rotating shaft (8) is hollow inside and communicated with the injection liquid conveying seat (11). One end of the eccentric driving rotating shaft (8) is connected with an injection device.

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