An injection mold for eyeglass frames that is easy to demould

Abstract

The utility model discloses an injection mold for eyeglass frames that is easy to demould, and relates to the technical field of injection molds, including an operating table, the top of the operating table is fixedly connected to a lower mold, the top of the lower mold is movably connected to an upper mold, and the upper mold and the operating table are connected by a telescopic rod. The utility model pushes the clamping block to drive the connecting rod to move downward when the fixed block moves downward, until the top of the connecting rod drops and fits with the bottom of the cavity of the lower mold, at which time the eyeglass frame can be injection molded, and at the same time, when the fixed block moves upward, it is unable to press the clamping block, so the first spring generates an upward reset force, thereby driving the clamping block and the connecting rod to move upward until the top of the connecting rod exposes the fixed cylinder, which is conducive to ejecting the molded eyeglass frame through the movement of the connecting rod, and is convenient for the molded eyeglass frame to be quickly demoulded, thereby improving the work efficiency of injection molding of the eyeglass frame.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for eyeglass frames which is easy to demould. Background Art

[0002] An injection mold is a tool used for plastic injection molding. Its working principle is to inject the heated and melted plastic into the mold cavity under high pressure by the injection molding machine, and obtain a molded product after cooling and solidification. It is a commonly used processing method for mass production of certain complex-shaped parts. At the same time, injection molds are indispensable tools in the plastic molding process. Its design and manufacturing need to consider multiple factors, including product structure, material selection, processing accuracy, etc. At the same time, correct use and maintenance are also the key to ensuring mold performance and extending service life. Injection molds are also used for mass production of eyeglass frames.

[0003] The injection mold of the eyeglass frame is a key tool for manufacturing the eyeglass frame. Its design and manufacturing process have an important impact on the quality and production efficiency of the final product. When the eyeglass frame is being injection molded, since it is a product worn on the eyes, extremely high precision is required. At the same time, the comfort and aesthetics of the wearer must be ensured. Therefore, the surface quality of the injection mold also needs to meet high requirements to ensure that the surface of the produced eyeglass frame is flat, smooth and flawless.

[0004] When injection molding the eyeglass frame, you need to first select the corresponding injection mold according to the drawing and requirements of the eyeglass frame. Then, after the upper mold and the lower mold are connected, the melted plastic can be transported to the grooves inside the upper mold and the lower mold so that it can be formed after cooling and solidification.

[0005] However, after the glasses frame is injection molded, it is not easy to remove the glasses frame from the upper mold and the lower mold because the size of the glasses frame is consistent with the mold cavity, thereby affecting the working efficiency of the glasses frame injection molding. Utility Model Content

[0006] Based on this, the purpose of the utility model is to provide an injection mold for eyeglass frames that is easy to demold, so as to solve the technical problem that after the injection molding of the eyeglass frames is completed, the size of the injected eyeglass frames is matched with the mold cavities in the upper mold and the lower mold, so it is difficult to remove the eyeglass frames from the inside, thereby affecting the work efficiency of the injection molding of the eyeglass frames.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold for an eyeglass frame that is easy to demold, comprising an operating table, a lower mold is fixedly connected to the top of the operating table, an upper mold is movably connected to the top of the lower mold, and the upper mold and the operating table are connected by a telescopic rod, a mold cavity is provided on adjacent sides of the lower mold and the upper mold, a card slot is provided on both sides of the lower mold, and a card block that matches the card slot is movably connected in the card slot, a plurality of fixed cylinders pass through the bottom of the mold cavity of the lower mold, a connecting rod that matches the fixed cylinder is movably connected in the fixed cylinder, and the connecting rod is fixedly connected to the top of the card block, and fixed blocks that match the card slot are fixedly connected on both sides of the upper mold, a groove is provided at the bottom of the card slot, one end of a group of first springs is fixedly connected to the bottom of the groove, and the other end of the first spring is fixedly connected to the bottom of the card block.

[0008] By adopting the above technical scheme, when the upper mold is driven to move by the telescopic rod, the fixed blocks on both sides thereof can be driven to move synchronously, and when the fixed block moves downward, the clamping block drives the connecting rod to move downward until the connecting rod drops to fit with the bottom of the lower mold cavity, at which time the eyeglass frame can be injection molded, and at the same time, when the fixed block moves upward, it is unable to press the clamping block, and at this time the first spring generates an upward restoring force, thereby driving the clamping block and the connecting rod to move downward until the top of the connecting rod is exposed from the fixed tube, and then the eyeglass frame molded in the lower mold cavity can be ejected, which is beneficial for ejecting the molded eyeglass frame through the movement of the connecting rod, and facilitates the quick demolding of the molded eyeglass frame, thereby improving the work efficiency of the eyeglass frame injection molding.

[0009] The utility model is further configured that a group of sleeves are fixedly connected to the bottom of the groove, and a movable rod matching the sleeve is slidably connected in the sleeve, and the top of the movable rod is fixedly connected to the bottom of the block.

[0010] By adopting the above technical solution, the movable rod moves in the sleeve, which is beneficial to increase the stability of the card block in the card slot and avoid shaking when the first spring drives the card slot to reset, thereby increasing the stability of the card block when it slides.

[0011] The utility model is further configured as follows: a connecting block is fixedly connected to the top of the card block, limiting blocks are fixedly connected to both sides of the connecting block, limiting grooves are arranged on both sides of the card slot, the limiting blocks slide in the limiting grooves, and the limiting blocks are arranged in a "T"-shaped structure.

[0012] By adopting the above-mentioned technical scheme, the card slot can be made into a sealed structure through the card block and the connection, and the movement range and movement direction of the connecting block can be limited by the limit block and the limit slot, so that the connecting block can move better in the card slot, and the "T"-shaped structure of the limit block is conducive to increasing the stability of the limit block during movement.

[0013] The utility model is further configured that one end of a second spring is fixedly connected to the inner top of the limiting groove, and the other end of the second spring is fixedly connected to the top of the limiting block.

[0014] By adopting the above technical solution, when the telescopic rod drives the upper mold and the fixed blocks on both sides thereof to move upward, the connecting block does not receive any pressing force. At this time, it is beneficial to drive the limit block and the connecting block to move upward through the second spring, which is convenient for increasing the driving force for the upward movement of the card block, so that the card block can better drive the connecting rod to move upward, and the injection-molded glasses frame in the cavity of the lower mold can be better pushed through the connecting rod.

[0015] The utility model is further configured that one end of a connecting pipe is connected to the mold cavity of the upper mold, and the other end of the connecting pipe passes through the top of the upper mold and extends to the outside.

[0016] By adopting the above technical solution, when the mold cavities on the adjacent side of the lower mold and the upper mold match, the melted plastic can be transported into the interior through the connecting tube, which is beneficial for the plastic to fill the mold cavities on the adjacent side of the lower mold and the upper mold, thereby facilitating better injection molding of the eyeglass frame.

[0017] In summary, the utility model mainly has the following beneficial effects:

[0018] The utility model pushes the clamping block to drive the connecting rod to move downward when the fixing block moves downward, until the top of the connecting rod drops and fits with the bottom of the lower mold cavity. At this time, the eyeglass frame can be injection molded. At the same time, when the fixing block moves upward, it cannot press the clamping block, so the first spring generates an upward restoring force, thereby driving the clamping block and the connecting rod to move upward, until the top of the connecting rod is exposed from the fixing tube, the eyeglass frame injected into the lower mold cavity can be ejected, which is beneficial for ejecting the injected eyeglass frame through the movement of the connecting rod, making it convenient for the injected eyeglass frame to be quickly demolded, thereby improving the work efficiency of the eyeglass frame injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a detailed internal diagram of the three-dimensional structure of the utility model;

[0021] Figure 3It is a detailed diagram of the activity structure of the utility model;

[0022] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0023] In the figure: 1. operating table; 2. lower mold; 3. upper mold; 4. telescopic rod; 5. mold cavity; 6. fixed block; 7. connecting pipe; 8. slot; 9. block; 10. groove; 11. first spring; 12. sleeve; 13. movable rod; 14. connecting block; 15. limit groove; 16. limit block; 17. second spring; 18. connecting rod; 19. fixed tube. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0025] The following describes an embodiment of the utility model based on its overall structure.

[0026] An injection mold for eyeglass frames that is easy to demould, such as Figure 1-4 As shown, it includes an operating table 1, on which a lower mold 2 is fixedly connected to the top of the operating table 1, and an upper mold 3 is movably connected to the top of the lower mold 2, and the upper mold 3 is connected to the operating table 1 through a telescopic rod 4, and mold cavities 5 are provided on adjacent sides of the lower mold 2 and the upper mold 3, which is conducive to driving the upper mold 3 to move up and down through the telescopic rod 4, and is convenient for quickly injecting the eyeglass frame. At the same time, one end of a connecting tube 7 is connected to the mold cavity 5 of the upper mold 3, and the other end of the connecting tube 7 passes through the top of the upper mold 3 and extends to the outside, which is conducive to the telescopic rod 4 driving the upper mold 3 to move downward, so that when the mold cavities 5 on the adjacent sides of the lower mold 2 and the upper mold 3 are matched, the melted plastic can be transported into the mold cavity 5 through the connecting tube 7, which is convenient for better injection molding of the eyeglass frame.

[0027] Then, a card slot 8 is provided on both sides of the lower mold 2, and a card block 9 that fits the card slot 8 is movably connected in the card slot 8, so that the card block 9 slides in the card slot 8, and a groove 10 is provided at the bottom of the card slot 8, and one end of a group of first springs 11 is fixedly connected to the bottom of the groove 10, and the other end of the first spring 11 is fixedly connected to the bottom of the card block 9, so when the card block 9 is subjected to downward pressure, the first spring 11 can be synchronously squeezed to drive the card block 9 to move downward, and when the card block 9 is not subjected to downward pressure, the first spring 11 can be reset to drive the card block 9 to move upward, and at the same time, a plurality of fixed cylinders 19 are passed through the bottom of the mold cavity 5 of the lower mold 2, and the fixed cylinders 19 The inner movable connection is provided with a connecting rod 18 which matches with the fixed tube 19, and the connecting rod 18 is fixedly connected to the top of the block 9, which is conducive to synchronously driving the connecting rod 18 to move up and down in the fixed tube 19 when the block 9 moves up and down, so that the molded glasses frame can be ejected through the movement of the connecting rod 18, so that the molded glasses frame can be quickly demolded, thereby improving the work efficiency of the injection molding of the glasses frame. Fixed blocks 6 which match with the card slot 8 are fixedly connected on both sides of the upper mold 3, which is conducive to synchronously moving the fixed block 6 up and down when the upper mold 3 is driven up and down by the telescopic rod 4, so that the downward extrusion force on the block 9 is generated by the up and down movement of the fixed block 6.

[0028] A set of sleeves 12 are fixedly connected to the bottom of the groove 10, and a movable rod 13 matching the sleeve 12 is slidably connected in the sleeve 12. The top of the movable rod 13 is fixedly connected to the bottom of the block 9, which is beneficial for synchronously driving the movable rod 13 to slide in the sleeve 12 when the first spring 11 resets and drives the block 9 to move upward, thereby increasing the stability of the block 9 during movement.

[0029] A connecting block 14 is further fixedly connected to the top of the card block 9, and the connecting block 14 slides in the card slot 8. Limiting blocks 16 are fixedly connected on both sides of the connecting block 14. Limiting grooves 15 are provided on both sides of the card slot 8. The limiting blocks 16 slide in the limiting grooves 15. The limiting grooves 15 and the limiting blocks 16 are helpful to limit the movement range and movement direction of the connecting block 14, so that the connecting block 14 can slide better in the card slot 8. The limiting blocks 16 are set to a "T"-shaped structure, which is helpful to increase the stability of the limiting blocks 16 sliding in the limiting grooves 15.

[0030] At the same time, one end of a second spring 17 is fixedly connected to the inner top of the limiting groove 15, and the other end of the second spring 17 is fixedly connected to the top of the limiting block 16, which is beneficial for eliminating the driving force for the downward movement of the connecting block 14 after the pressing force of the fixing block 6 on the clamping block 9 disappears. At this time, the limiting block 16 and the connecting block 14 can be driven to move upward by the second spring 17, so as to increase the driving force for the upward movement of the clamping block 9.

[0031] Working principle: When the eyeglass frame needs to be injection-molded, the telescopic rod 4 can be used to drive the upper mold 3 to move downward, so that the fixed blocks 6 on both sides of the upper mold 3 can exert a downward pressing force on the card block 9, so that the card block 9 moves downward, and the first spring 11 is compressed, and at this time, the connecting rod 18 can be driven to move downward in the fixed tube 19, so that the top of the connecting rod 18 fits with the bottom of the cavity 5 of the lower mold 2, so that the eyeglass frame can be better injection-molded. At the same time, when the telescopic rod 4 drives the upper mold 3 and the fixed block 6 to move upward, the pressing force on the card block 9 disappears, so that the first spring 11 is reset to drive the card block 9 to move upward, thereby driving the connecting rod 18 to move upward in the fixed tube 19, and the injection-molded eyeglass frame in the cavity 5 of the lower mold 2 can be pushed by the connecting rod 18.

[0032] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An injection mold for an eyeglass frame that is easy to demould, comprising an operating table (1), a lower mold (2) is fixedly connected to the top of the operating table (1), an upper mold (3) is movably connected to the top of the lower mold (2), and the upper mold (3) and the operating table (1) are connected by a telescopic rod (4), and a mold cavity (5) is provided on the adjacent side of the lower mold (2) and the upper mold (3), characterized in that: The lower mold (2) is provided with a card slot (8) on both sides, and a card block (9) matching the card slot (8) is movably connected in the card slot (8); a plurality of fixed cylinders (19) are passed through the bottom of the mold cavity (5) of the lower mold (2); a connecting rod (18) matching the fixed cylinder (19) is movably connected in the fixed cylinder (19), and the connecting rod (18) is fixedly connected to the top of the card block (9); both sides of the upper mold (3) are fixedly connected with a fixed block (6) matching the card slot (8); a groove (10) is provided at the bottom of the card slot (8); one end of a group of first springs (11) is fixedly connected to the bottom of the groove (10), and the other end of the first spring (11) is fixedly connected to the bottom of the card block (9).

2. The injection mold for eyeglass frames that is easy to demould according to claim 1, characterized in that: A set of sleeves (12) is fixedly connected to the bottom of the groove (10), and a movable rod (13) matching with the sleeve (12) is slidably connected inside the sleeve (12), and the top of the movable rod (13) is fixedly connected to the bottom of the block (9).

3. The injection mold for eyeglass frames that is easy to demould according to claim 1, characterized in that: The top of the clamping block (9) is fixedly connected to a connecting block (14), and both sides of the connecting block (14) are fixedly connected to limiting blocks (16). Both sides of the clamping slot (8) are provided with limiting grooves (15), and the limiting blocks (16) slide in the limiting grooves (15), and the limiting blocks (16) are arranged in a "T"-shaped structure.

4. The injection mold for eyeglass frames that is easy to demould according to claim 3, characterized in that: One end of a second spring (17) is fixedly connected to the inner top of the limiting groove (15), and the other end of the second spring (17) is fixedly connected to the top of the limiting block (16).

5. The injection mold for eyeglass frames that is easy to demould according to claim 3, characterized in that: One end of a connecting tube (7) is connected to the mold cavity (5) of the upper mold (3), and the other end of the connecting tube (7) passes through the top of the upper mold (3) and extends to the outside.

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