A lens mold

Abstract

This utility model belongs to the field of eyeglass processing technology, specifically a lens mold, including a base plate. A lower mold is fixedly connected to the top of the base plate, and multiple first columns are fixedly connected to the top of the lower mold. An upper mold is slidably connected to the middle of the first columns. An injection molding assembly is installed on the top of the upper mold. The lower mold and the upper mold are respectively provided with forming grooves in their middle parts. The lower mold is provided with a first groove, a second groove, and a third groove in its middle part. Multiple first springs are fixedly connected to the bottom of the third groove, and a carrier box is fixedly connected to the end of each first spring. The carrier box slides within the third groove. By providing a push rod and a carrier plate, when the lower mold and the upper mold are closed, the carrier plate fits against the bottom of the forming groove. After injection molding is completed, the first springs rebound, driving the push rod and the carrier plate to move upward, pushing the injection molded core out of the forming groove, reducing the adhesion between the core and the lower mold and making it easier to remove the core.

Description

Technical Field

[0001] This utility model belongs to the field of eyeglasses processing technology, specifically a lens mold. Background Technology

[0002] Eyeglasses are an optical aid, consisting of lenses worn on the eyes to correct vision or protect the eyes. They play an important role in modern life.

[0003] When producing eyeglasses, injection molding is usually used. After the upper and lower molds are closed, plastic granules are heated and melted, then injected into the molds and cooled to form the shape. The product is then removed from the mold to obtain the lens core. The lens core can be ground into various lens models according to actual usage requirements.

[0004] When producing lens mold cores using injection molding, the lens mold cores need to be removed from the mold after injection molding. When the injection mold cores stick to the mold, the lens is difficult to separate from the mold, resulting in inconvenience in handling. Therefore, this utility model provides a lens mold. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A lens mold according to this utility model includes a base plate, a lower mold fixedly connected to the top of the base plate, a plurality of first columns fixedly connected to the top of the lower mold, an upper mold slidably connected to the middle of the first columns, an injection molding assembly installed on the top of the upper mold, shaped grooves respectively opened in the middle of the lower mold and the middle of the upper mold, a first groove, a second groove and a third groove opened in the middle of the lower mold, a plurality of first springs fixedly connected to the bottom of the third groove, a carrier box fixedly connected to the end of each first spring, the carrier box sliding within the third groove, two baffles symmetrically arranged within the carrier box, the baffles sliding within the carrier box, and a locking block fixedly connected to the side wall of the baffle, the locking block sliding within the second groove. A second spring is fixed between the two baffles. A push rod is fixed to the top of the baffle, and a support plate is placed on the top of the push rod. Multiple second pillars are fixed to the top of the lower mold. Multiple fourth grooves are opened in the middle of the upper mold, and the fourth grooves are corresponding to the second pillars. Multiple collars are fixed to the middle of the support plate, and the collars are slidably connected to the second pillars. Multiple fifth grooves are opened on the top of the lower mold, and the fifth grooves have the same area as the collars. With the push rod and support plate, when the lower mold and upper mold are closed, the support plate fits against the bottom of the groove. After injection molding, the first spring rebounds, causing the push rod and support plate to move upward, pushing the injection molded core out of the groove, reducing the adhesion between the core and the lower mold and making it easier to remove the core.

[0007] Preferably, the injection molding assembly is installed on the top of the upper mold and the top of the injection molding assembly is connected to a feed pipe. A bracket is fixedly connected to the top of the base plate, and a motor is fixedly connected to the top of the bracket. A lead screw is fixedly connected to the output end of the motor. The lead screw is rotatably connected to the side wall of the bracket. A slide block is slidably connected to the middle of the lead screw. A connecting rod is fixedly connected to the side wall of the slide block, and the end of the connecting rod is fixedly connected to the side wall of the upper mold. By setting the lead screw, the slide block slides on the lead screw, driving the upper mold to move synchronously, thereby realizing the control of the movement of the upper mold. By setting the injection molding assembly, when the upper mold and lower mold are closed, raw material is added into the feed pipe, and the injection molding assembly can be started to perform injection molding.

[0008] Preferably, a ball bearing is embedded at the top of the push rod, and the ball bearing is in rolling connection with the push rod; by providing the ball bearing, when the end of the push rod slides on the bottom surface of the bearing plate, the rotation of the ball bearing can reduce the frictional resistance of the push rod sliding, making the push rod slide more smoothly.

[0009] Preferably, a sealing gasket is installed at the bottom of the support plate, and the sealing gasket is located at the edge of the support plate; by providing a sealing gasket, when the support plate is in contact with the bottom of the groove, the sealing gasket can seal the gap between the support plate and the groove, reducing the entry of injection molding material into the gap.

[0010] Preferably, a plurality of third columns are fixedly connected to the top of the base plate, an air chamber is fixedly connected to the top of the third columns, an air pump is fixedly connected to the side wall of the air chamber, and a plurality of jet nozzles are connected to the side wall of the air chamber; by providing jet nozzles, the air pump generates airflow that enters the air chamber and is then sprayed outward by the jet nozzles, which can cool the injection-molded lens by blowing air.

[0011] Preferably, a control box is installed on the top of the base plate. The control box is used to control the start and stop of the injection molding assembly, motor, and air pump. By providing the control box, the start and stop of the injection molding assembly, motor, and air pump can be controlled.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The lens mold of this utility model is provided with an ejector rod and a support plate. When the lower mold and the upper mold are closed, the support plate is attached to the bottom of the groove. After injection molding is completed, the first spring rebounds and drives the ejector rod and the support plate to move upward, pushing the injection molded core out of the groove, reducing the adhesion between the core and the lower mold and making it easier to remove the core.

[0014] 2. The lens mold of this utility model is equipped with a lead screw, and the slide block slides on the lead screw to drive the upper mold to move synchronously, thereby realizing the control of the upper mold movement; by being equipped with an injection molding assembly, when the upper mold and the lower mold are closed, raw materials are added into the feed pipe, and the injection molding assembly can be started to perform injection molding. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the bracket and lead screw structure in this utility model;

[0018] Figure 3 This is a schematic diagram of the air pump and jet head structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the upper mold and the fourth groove structure in this utility model;

[0020] Figure 5 This is a schematic diagram of the lower mold and bearing plate structure in this utility model;

[0021] Figure 6 This is a schematic diagram of the push rod and locking block structure in this utility model;

[0022] Figure 7 This is a schematic diagram of the second and third groove structures in this utility model;

[0023] Figure 8 This is a schematic diagram of the first and second spring structures in this utility model;

[0024] Figure 9 This is a schematic diagram of the ball bearing and carrier box structure in this utility model;

[0025] In the diagram: 1. Top rod; 11. Base plate; 12. Lower mold; 13. First column; 14. Upper mold; 15. Groove; 16. First groove; 17. Second groove; 18. Third groove; 19. First spring; 101. Carrier box; 102. Baffle; 103. Second spring; 104. Locking block; 105. Carrier plate; 106. Second column; 107. Fourth groove; 108. Collar; 109. Fifth groove; 2. Injection molding assembly; 21. Bracket; 22. Motor; 23. Lead screw; 24. Slide; 25. Connecting rod; 26. Feed pipe; 3. Ball bearing; 4. Sealing gasket; 5. Air nozzle; 51. Third column; 52. Air chamber; 53. Air pump; 6. Control box. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 , Figure 2 , Figures 4 to 9As shown, a lens mold of this utility model includes a base plate 11. A lower mold 12 is fixedly connected to the top of the base plate 11. A plurality of first columns 13 are fixedly connected to the top of the lower mold 12. An upper mold 14 is slidably connected to the middle of the first columns 13. An injection molding assembly 2 is installed on the top of the upper mold 14. The lower mold 12 and the upper mold 14 are respectively provided with forming grooves 15 in their middle portions. A first groove 16, a second groove 17, and a third groove 18 are provided in the middle portion of the lower mold 12. A plurality of first springs 19 are fixedly connected to the bottom of the third groove 18. A carrier box 101 is fixedly connected to the end of each of the first springs 19. The carrier box 101 slides within the third groove 18. Two baffles 102 are symmetrically arranged within the carrier box 101. Plate 102 slides within the carrier box 101. A locking block 104 is fixedly connected to the side wall of plate 102, and the locking block 104 slides within the second groove 17. A second spring 103 is fixedly connected between two symmetrically arranged plates 102. A push rod 1 is fixedly connected to the top of plate 102, and a carrier plate 105 is placed on top of the push rod 1. Multiple second pillars 106 are fixedly connected to the top of the lower mold 12. Multiple fourth grooves 107 are formed in the middle of the upper mold 14, and the fourth grooves 107 correspond to the second pillars 106. Multiple collars 108 are fixedly connected to the middle of the carrier plate 105, and the collars 108 are slidably connected to the second pillars 106. Multiple fifth grooves 109 are formed in the top of the lower mold 12. The fifth groove 109 has the same area as the collar 108. In use, the upper mold 14 slides downwards on the first column 13, closing with the lower mold 12. At this time, the second column 106 inserts into the fourth groove 107. The upper mold 14 presses the collar 108, causing it to slide downwards on the second column 106. Finally, the collar 108 slides into the fifth groove 109, and the support plate 105 moves synchronously. When the support plate 105 moves downwards, the first spring 19 contracts under force, causing the support box 101 and the baffle 102 to move downwards synchronously. At this time, the symmetrically arranged push rods 1 slide at the bottom of the support plate 105 and move closer to each other. The second spring 103 contracts under force, causing the locking block 104 to slide out of the second groove 17. As it slides out of the second groove 17 and moves downward, the entire support plate 105, ejector rod 1, baffle 102, and support box 101 move downward. At this time, the first spring 19 and the second spring 103 are in a contracted state, the collar 108 is located in the fifth groove 109, the support plate 105 fits the bottom of the groove 15, and the injection molding assembly 2 is started to perform lens injection. After the injection is completed, the lower mold 12 and the upper mold 14 are separated. At this time, the first spring 19 rebounds, driving the support box 101 to move upward. The second spring 103 rebounds, driving the symmetrical baffle 102 to move away from each other. The locking block 104 moves upward and gradually slides into the second groove 17. When the ejector rod 1 and the support plate 105 move upward synchronously, they push out the mold core after injection.With the ejector pin 1 and the support plate 105 configured, when the lower mold 12 and the upper mold 14 are closed, the support plate 105 fits against the bottom of the groove 15. After injection molding, the first spring 19 rebounds, causing the ejector pin 1 and the support plate 105 to move upward, ejecting the molded core from the groove 15. This reduces the adhesion between the core and the lower mold 12 and makes it easier to remove the core.

[0028] like Figure 1 , Figure 2 As shown, the injection molding assembly 2 is mounted on the top of the upper mold 14, and the top of the injection molding assembly 2 is connected to the feed pipe 26. A bracket 21 is fixedly connected to the top of the base plate 11, and a motor 22 is fixedly connected to the top of the bracket 21. A lead screw 23 is fixedly connected to the output end of the motor 22. The lead screw 23 is rotatably connected to the side wall of the bracket 21. A slide block 24 is slidably connected to the middle of the lead screw 23. A connecting rod 25 is fixedly connected to the side wall of the slide block 24, and the end of the connecting rod 25 is fixedly connected to the side wall of the upper mold 14. In use, the motor 22 is started, and the motor 22 drives the lead screw 23 to rotate. When the upper mold 14 moves synchronously, the slide block 24 slides on the lead screw 23, thus controlling the movement of the upper mold 14. After the upper mold 14 and the lower mold 12 are closed, raw material is added into the feed pipe 26, and the injection molding assembly 2 can be started to perform injection molding.

[0029] like Figure 8 , Figure 9 As shown, a ball bearing 3 is embedded in the top of the push rod 1, and the ball bearing 3 is in rolling connection with the push rod 1. In use, when the end of the push rod 1 slides on the bottom surface of the support plate 105, the rotation of the ball bearing 3 can reduce the frictional resistance of the push rod 1, making the push rod 1 slide more smoothly. By providing the ball bearing 3, when the end of the push rod 1 slides on the bottom surface of the support plate 105, the rotation of the ball bearing 3 can reduce the frictional resistance of the push rod 1, making the push rod 1 slide more smoothly.

[0030] like Figure 6 , Figure 7 , Figure 9 As shown, a sealing gasket 4 is installed at the bottom of the support plate 105, and the sealing gasket 4 is located at the edge of the support plate 105. By providing the sealing gasket 4, when the support plate 105 is in contact with the bottom of the groove 15, the sealing gasket 4 can seal the gap between the support plate 105 and the groove 15, reducing the amount of injection molding material entering the gap.

[0031] like Figure 1 , Figure 3As shown, a plurality of third columns 51 are fixedly connected to the top of the base plate 11, and an air chamber 52 is fixedly connected to the top of the third column 51. An air pump 53 is fixedly connected to the side wall of the air chamber 52, and a plurality of air jets 5 are connected to the side wall of the air chamber 52. In use, after the lower mold 12 is separated from the upper mold 14, the air pump 53 is started. The air pump 53 generates airflow that enters the air chamber 52 and is then sprayed outward by the air jets 5, which can cool the injection-molded lens. By setting the air jets 5, the air pump 53 generates airflow that enters the air chamber 52 and is then sprayed outward by the air jets 5, which can cool the injection-molded lens.

[0032] like Figure 1 , Figure 6 , Figure 9 As shown, a control box 6 is installed on the top of the base plate 11. The control box 6 is used to control the start and stop of the injection molding assembly 2, the motor 22, and the air pump 53. By setting the control box 6, the start and stop of the injection molding assembly 2, the motor 22, and the air pump 53 can be controlled.

[0033] Working principle: During use, the upper mold 14 slides downward on the first column 13 and closes with the lower mold 12. At this time, the second column 106 is inserted into the fourth groove 107. The upper mold 14 squeezes the collar 108, causing the collar 108 to slide downward on the second column 106. Finally, the collar 108 slides into the fifth groove 109. The support plate 105 moves synchronously. When the support plate 105 moves downward, the first spring 19 is compressed, causing the support box 101 and the baffle 102 to move downward synchronously. At this time, the symmetrically arranged... The push rod 1 slides and moves closer to the bottom of the support plate 105. The second spring 103 contracts under force, causing the locking block 104 to slide out of the second groove 17. As the locking block 104 slides out of the second groove 17, it moves downward, realizing the overall downward movement of the support plate 105, push rod 1, baffle 102, and support box 101. At this time, the first spring 19 and the second spring 103 are in a contracted state, the collar 108 is located in the fifth groove 109, and the support plate 105 fits against the bottom of the groove 15, thus activating the injection molding assembly 2. Lens injection molding is performed. After injection molding is completed, the lower mold 12 and upper mold 14 are separated. At this time, the first spring 19 returns, causing the carrier box 101 to move upward. The second spring 103 returns, causing the symmetrical baffles 102 to move away from each other. As the locking block 104 moves upward, it gradually slides into the second groove 17. When the ejector rod 1 and the carrier plate 105 move upward synchronously, they eject the molded core. The motor 22 is started, and the motor 22 drives the lead screw 23 to rotate. At this time, the slide block 24 slides on the lead screw 23, causing the upper mold 14 to move upward. The step movement enables the control of the movement of the upper mold 14. When the upper mold 14 and the lower mold 12 are closed, raw material is added into the feed pipe 26, and the injection molding assembly 2 can be started to perform injection molding. When the end of the ejector rod 1 slides on the bottom surface of the support plate 105, the rotation of the ball 3 can reduce the frictional resistance of the ejector rod 1, making the ejector rod 1 slide more smoothly. After the lower mold 12 is separated from the upper mold 14, the air pump 53 is started. The air pump 53 generates airflow that enters the air chamber 52, and then sprays it outward from the jet nozzle 5, which can blow and cool the injected lens.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lens mold characterized by: The system includes a base plate (11), a lower mold (12) fixedly connected to the top of the base plate (11), a plurality of first columns (13) fixedly connected to the top of the lower mold (12), an upper mold (14) slidably connected to the middle of the first columns (13), an injection molding assembly (2) mounted on the top of the upper mold (14), shaped grooves (15) respectively opened in the middle of the lower mold (12) and the upper mold (14), a first groove (16), a second groove (17) and a third groove (18) opened in the middle of the lower mold (12), a plurality of first springs (19) fixedly connected to the bottom of the third groove (18), a carrier box (101) fixedly connected to the end of the first springs (19), the carrier box (101) sliding in the third groove (18), two baffles (102) symmetrically arranged in the carrier box (101), the baffles (102) sliding in the carrier box (101), and so on. A locking block (104) is fixedly connected to the side wall of the baffle (102). The locking block (104) slides in the second groove (17). A second spring (103) is fixedly connected between the two symmetrically arranged baffles (102). A top rod (1) is fixedly connected to the top of the baffle (102). A bearing plate (105) is placed on the top of the top rod (1). A plurality of second columns (106) are fixedly connected to the top of the lower mold (12). A plurality of fourth grooves (107) are opened in the middle of the upper mold (14). The fourth grooves (107) are corresponding to the second columns (106). A plurality of collars (108) are fixedly connected in the middle of the bearing plate (105). The collars (108) are slidably connected to the second columns (106). A plurality of fifth grooves (109) are opened on the top of the lower mold (12). The fifth grooves (109) and collars (108) have the same area.

2. A lens mold according to claim 1, wherein: The injection molding assembly (2) is installed on the top of the upper mold (14) and the top of the injection molding assembly (2) is connected to the feed pipe (26). The top of the base plate (11) is fixedly connected to the bracket (21). The top of the bracket (21) is fixedly connected to the motor (22). The output end of the motor (22) is fixedly connected to the lead screw (23). The lead screw (23) is rotatably connected to the side wall of the bracket (21). The middle part of the lead screw (23) is slidably connected to the slide (24). The side wall of the slide (24) is fixedly connected to the connecting rod (25). The end of the connecting rod (25) is fixedly connected to the side wall of the upper mold (14).

3. A lens mold according to claim 2, wherein: The top of the top rod (1) is inlaid with a ball (3), and the ball (3) is in rolling connection with the top rod (1).

4. A lens mold according to claim 3, wherein: A sealing gasket (4) is installed at the bottom of the support plate (105), and the sealing gasket (4) is located at the edge of the support plate (105).

5. A lens mold according to claim 4, characterized in that: The bottom plate (11) is fixed to the top of a plurality of third columns (51), the top of the third columns (51) is fixed to an air chamber (52), the side wall of the air chamber (52) is fixed to an air pump (53), and the side wall of the air chamber (52) is connected to a plurality of jet heads (5).

6. A lens mold according to claim 5, characterized in that: A control box (6) is installed on the top of the base plate (11). The control box (6) is used to control the start and stop of the injection molding assembly (2), the motor (22), and the air pump (53).

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