Side glue port glue feeding mold of eight-hole transparent part

Abstract

The utility model relates to the field of injection molds, and discloses a side glue port glue inlet mold of an eight-hole transparent part, which comprises an upper mold and a lower mold, the lower mold is arranged below the upper mold, the upper mold and the lower mold are closed to form a molding groove, and a glue port shunting structure is arranged at the top of the upper mold. According to the side glue port glue inlet mold of the eight-hole transparent part, the upper mold is arranged, the layout of side glue ports is optimized, the position and the shape of each glue port are reasonably distributed according to the actual shape of the mold and the structural characteristics of the eight-hole transparent part, materials can be evenly distributed to each glue port, glue port runners are gradually-changed runners, and particularly, the glue ports are gradually changed, so that the side glue port glue inlet mold of the eight-hole transparent part is more uniform in material distribution. The design that the diameter of a runner is gradually reduced is adopted, so that when materials flow into a profile groove, the flow speed is uniform, filling is complete, a flow control valve is arranged at an injection molding opening, the glue inlet amount of each glue opening is accurately adjusted, the injection pressure and speed are adjusted in stages through a booster pump in the injection molding process, and product defects are reduced; the problems of bubbles and non-uniform filling caused by non-uniform glue feeding are solved.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, specifically to a side-entry mold for an 8-cavity transparent part. Background Technology

[0002] Transparent parts, due to their excellent optical properties and aesthetically pleasing appearance, are widely used in home appliances, automobiles, and electronic products. During the injection molding process of transparent parts, a smooth, bubble-free, and defect-free surface is typically required. However, multiple gate designs, especially with side gates, are prone to defects such as bubbles, shrinkage, incomplete filling, or flow marks on the surface of transparent parts due to long glue flow paths, uneven flow rates, or improper gate design. Furthermore, the high surface quality requirements of transparent parts necessitate careful attention to avoid uneven filling and unnecessary bubble formation during the injection process. To improve the injection molding quality of 8-cavity transparent parts, a side-gate injection mold for 8-cavity transparent parts is proposed, addressing the aforementioned technical shortcomings. Utility Model Content

[0003] The purpose of this invention is to provide a side-entry mold for an 8-cavity transparent part, so as to solve the problems of uneven glue injection leading to air bubbles and uneven filling mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a side-entry mold for an 8-cavity transparent part, comprising an upper mold and a lower mold, wherein the lower mold is disposed below the upper mold, and the upper mold and the lower mold are closed to form a molding groove, and an entry flow distribution structure is disposed on the top of the upper mold; the entry flow distribution structure includes eight sets of injection ports opened on the top of the upper mold, and entry ports are opened on the side of the product cavity, and entry channels are formed between the entry ports and the injection ports, wherein the diameter of each set of entry channels gradually decreases from top to bottom, a flow control valve is installed at the input end of the entry channel, a heat preservation tank is installed on the top of the flow control valve, a booster pump is installed on one side of the heat preservation tank, a plastic tank is fixed on the left side of the outer wall of the upper mold, a main flow pipe is disposed at the output end of the plastic tank, and eight sets of flow channels are disposed at the bottom of the main flow pipe, wherein the flow channels are distributed to the eight sets of heat preservation tanks.

[0005] As a further technical solution of this utility model, the groove is provided with venting grooves at the edge of the cavity, and the venting groove is provided with a venting hole at the output end, and the venting hole bends upward and extends to the outer wall of the upper mold.

[0006] As a further technical solution of this utility model, a demolding cavity is provided in the lower mold, a demolding motor is fixed at the bottom of the inner wall of the demolding cavity, the output shaft of the demolding motor is fixedly connected to a screw, and a set of threaded blocks are sleeved on each side of the outer wall of the screw.

[0007] As a further technical solution of this utility model, a lifting frame is hinged to the top of the threaded block, and the top of the lifting frame is hinged to the top rod.

[0008] As a further technical solution of this utility model, short pins and long pins are staggered at the top of the top rod, and the positions of the short pins and long pins correspond to the acupoints and horizontal positions of the transparent part, respectively.

[0009] As a further technical solution of this utility model, the threads on both sides of the screw are in opposite directions, and the threaded block is embedded in the bottom end of the demolding cavity and moves.

[0010] As a further technical solution of this utility model, hydraulic cylinders are provided at the four corners of the upper mold, and hydraulic rods are provided at the movable ends of the hydraulic cylinders. Fixing blocks are fixed at corresponding positions around the upper mold, and the top of the hydraulic rods is fixedly connected to the fixing blocks.

[0011] As a further technical solution of this utility model, the lower mold is provided with a heating wire near the cavity of the mold groove, and a temperature controller is installed on the right side wall of the lower mold. The heating wire and the heat preservation tank are both controlled by the temperature controller.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the side glue inlet mold of the 8-cavity transparent part not only ensures uniform and smooth glue flow, avoids uneven filling, and allows gas to be discharged smoothly, avoiding the generation of air bubbles, but also ensures uniform temperature in the glue inlet area, reducing the problem of uneven filling.

[0013] (1) By setting up an upper mold, a gate flow channel, a flow control valve, a booster pump, a heat preservation tank, a branch channel, a main flow pipe, an exhaust groove, a fixing block, and a plastic tank, the device optimizes the side gate layout. According to the actual shape of the mold and the structural characteristics of the 8-cavity transparent part, the position and shape of each gate are reasonably distributed so that each gate can distribute material evenly, ensuring the uniformity of filling, reducing the length and complexity of the glue flow path, and ensuring the smooth flow of plastic. The gate flow channel is a gradient flow channel. In particular, at the gate, the flow channel diameter is gradually reduced, so that the material can flow at a uniform speed and fill completely when flowing into the mold groove, avoiding the problem of uneven filling caused by an excessively large mold groove. A flow control valve is set at the injection port to accurately adjust the amount of glue entering each gate. During the injection process, the injection pressure and speed are adjusted in stages by the booster pump to ensure that a lower injection pressure is used in the early stage of injection to avoid bubbles and material residue. In the later stage of injection, the injection pressure is gradually increased to ensure that the gate is completely filled and to reduce product defects.

[0014] (2) By setting venting grooves and venting holes, the permeable venting grooves at the key acupoints of the mold groove improve the venting effect, ensuring that gas will not be trapped in the mold during the injection molding process. The design of tiny venting holes ensures that gas can be discharged smoothly, avoiding the generation of bubbles and surface defects.

[0015] (3) By setting up an insulated tank and heating wire, an independently temperature-controlled insulated tank is designed in the mold to avoid problems of poor flow and incomplete filling caused by uneven temperature. Local heating technology is adopted, and heating wires are designed in the glue inlet area to ensure the temperature of each glue inlet area is stable, ensure the fluidity of the material during filling, and reduce incomplete filling and air bubbles caused by uneven heat conduction. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a front view cross-sectional structural diagram of the glue outlet channel of this utility model;

[0018] Figure 3 This is a top view of the exhaust channel structure of this utility model;

[0019] Figure 4 This is a top view schematic diagram of the groove structure of this utility model.

[0020] In the diagram: 1. Upper mold; 2. Glue outlet channel; 3. Flow control valve; 4. Booster pump; 5. Insulation tank; 6. Branch channel; 7. Main channel; 8. Venting groove; 9. Fixing block; 10. Plastic tank; 11. Hydraulic rod; 12. Molding groove; 13. Lower mold; 14. Hydraulic cylinder; 15. Short ejector pin; 16. Ejector rod; 17. Long ejector pin; 18. Demolding cavity; 19. Screw; 20. Lifting frame; 21. Threaded block; 22. Demolding motor; 23. Temperature controller; 24. Venting hole; 25. Heating wire. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides an embodiment of a side-entry mold for an 8-cavity transparent part, comprising an upper mold 1 and a lower mold 13. The lower mold 13 is located below the upper mold 1, and the upper mold 1 and lower mold 13 are closed to form a molding groove 12. A glue outlet diversion structure is provided at the top of the upper mold 1. The glue outlet diversion structure includes eight sets of injection ports opened at the top of the upper mold 1. Glue outlets are opened on the side of the product cavity, and glue outlet channels 2 are formed between the glue outlets and the injection ports. The diameter of each set of glue outlet channels 2 gradually decreases from top to bottom. An inlet is installed at the input end of the glue outlet channel 2. A flow control valve 3 is installed on top of the flow control valve 3. A heat preservation tank 5 is installed on one side of the heat preservation tank 5. A booster pump 4 is installed on the left side of the outer wall of the upper mold 1. A plastic tank 10 is fixed. A main flow pipe 7 is provided at the output end of the plastic tank 10. Eight branch channels 6 are provided at the bottom of the main flow pipe 7. The branch channels 6 divide the flow to the eight heat preservation tanks 5. Hydraulic cylinders 14 are provided at the four corners of the outer side of the upper mold 1. Hydraulic rods 11 are provided at the movable ends of the hydraulic cylinders 14. Fixing blocks 9 are fixed at corresponding positions around the upper mold 1. The top of the hydraulic rods 11 is fixedly connected to the fixing blocks 9.

[0023] Specifically, such as Figure 1 and Figure 2 As shown, the device optimizes the side gate layout. Based on the actual shape of the mold and the structural characteristics of the 8-cavity transparent part, the position and shape of each gate are rationally distributed, so that each gate can distribute material evenly, ensuring uniform filling, reducing the length and complexity of the glue flow path, and ensuring smooth plastic flow. The gate flow channel 2 is a gradient flow channel. In particular, at the gate, the flow channel diameter is gradually reduced, so that the material can flow at a uniform speed and fill completely when flowing into the mold groove 12, avoiding uneven filling caused by an excessively large mold groove 12. A flow control valve 3 is set at the injection port to precisely adjust the amount of glue entering each gate. During the injection process, the injection pressure and speed are adjusted in stages by the booster pump 4 to ensure that a lower injection pressure is used in the early stage of injection to avoid air bubbles and material residue. In the later stage of injection, the injection pressure is gradually increased to ensure complete filling of the gate.

[0024] The groove 12 is machined with venting grooves 8 at the edge of the acupoint. Venting holes 24 are provided at the output end of the venting grooves 8. Venting holes 24 are bent upward and extended to the outer wall of the upper mold 1.

[0025] Specifically, such as Figure 1 and Figure 3 As shown, at the key acupoints of the groove 12, the permeable venting groove 8 improves the venting effect and ensures that gas will not be trapped in the mold during the injection molding process. The design of the tiny venting hole 24 ensures that the gas can be discharged smoothly.

[0026] The lower mold 13 is provided with a demolding cavity 18. A demolding motor 22 is fixed at the bottom of the inner wall of the demolding cavity 18. The output shaft of the demolding motor 22 is fixedly connected to a screw 19. A set of threaded blocks 21 are sleeved on each side of the outer wall of the screw 19. A lifting frame 20 is hinged to the top of the threaded block 21. The top of the lifting frame 20 is hinged to the ejector rod 16. Short ejector pins 15 and long ejector pins 17 are staggered on the top of the ejector rod 16. The positions of the short ejector pins 15 and long ejector pins 17 correspond to the cavity and the horizontal position of the transparent part, respectively. The threads on both sides of the screw 19 are opposite. The threaded blocks 21 are embedded in the bottom of the demolding cavity 18 and move. A heating wire 25 is provided near the cavity of the groove 12 in the lower mold 13. A temperature controller 23 is installed on the right side wall of the lower mold 13. The heating wire 25 and the heat preservation tank 5 are both controlled by the temperature controller 23.

[0027] Specifically, such as Figure 1 and Figure 4 As shown, an independently temperature-controlled insulated tank 5 is designed inside the mold to avoid problems such as poor flow and incomplete filling caused by uneven temperature. Local heating technology is adopted, and heating wires 25 are designed in the glue inlet area to ensure the temperature of each glue inlet area is stable and to ensure the fluidity of the material during filling.

[0028] Working principle: The upper mold 1 and lower mold 13 are closed. The plastic is injected from the plastic tank 10 into the main pipe 7, and then diverted to the heat preservation tank 5 through the branch channel 6. The gate channel 2 is a gradient channel, especially at the gate, where the channel diameter gradually decreases. This ensures that the material flows into the mold groove 12 at a uniform flow rate and fills completely. A flow control valve 3 is set at the injection port to precisely adjust the amount of plastic injected into each gate. During the injection process, the injection pressure and speed are adjusted in stages by the booster pump 4 to ensure that a lower injection pressure is used in the early stage of injection to avoid air bubbles and material residue. In the later stage of injection, the injection pressure is gradually increased, and the plastic enters the mold groove 12. After molding, the hydraulic cylinder 14 lifts the hydraulic rod 11, and the upper mold 1 opens. At this time, the demolding motor 22 drives the screw 19 to rotate, and the two sets of threaded blocks 21 move relative to each other. The lifting frame 20 lifts the ejector rod 16, and the short ejector pin 15 and the long ejector pin 17 push the molded product upward from the mold groove 12 for demolding.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A side-entry mold for an 8-cavity transparent component, comprising an upper mold (1) and a lower mold (13), characterized in that: A lower mold (13) is provided below the upper mold (1), and the upper mold (1) and the lower mold (13) are closed to form a molding groove (12). A glue outlet diversion structure is provided on the top of the upper mold (1). The injection port diversion structure includes eight injection ports opened on the top of the upper mold (1), and injection ports are opened on the side of the product cavity. An injection port flow channel (2) is formed between the injection port and the injection port. The diameter of each injection port flow channel (2) gradually decreases from top to bottom. A flow control valve (3) is installed at the input end of the injection port flow channel (2). A heat preservation tank (5) is installed on the top of the flow control valve (3). A booster pump (4) is installed on one side of the heat preservation tank (5). A plastic tank (10) is fixed on the left side of the outer wall of the upper mold (1). A main flow pipe (7) is provided at the output end of the plastic tank (10). Eight diversion channels (6) are provided at the bottom of the main flow pipe (7). The diversion channels (6) divert the flow to the eight heat preservation tanks (5).

2. The side-gluing injection mold according to claim 1, characterized in that: The groove (12) is provided with venting grooves (8) at the edge of the acupoint. The venting groove (8) is provided with a venting hole (24) at the output end. The venting hole (24) bends upward and extends to the outer wall of the upper mold (1).

3. The side-gluing injection mold according to claim 1, characterized in that: The lower mold (13) is provided with a demolding cavity (18). A demolding motor (22) is fixed at the bottom of the inner wall of the demolding cavity (18). The output shaft of the demolding motor (22) is fixedly connected to a screw (19). A set of threaded blocks (21) are sleeved on each side of the outer wall of the screw (19).

4. The side-gluing injection mold according to claim 3, characterized in that: The top of the threaded block (21) is hinged to a lifting frame (20), and the top of the lifting frame (20) is hinged to a top rod (16).

5. The side-gluing injection mold according to claim 4, characterized in that: The top of the top rod (16) is staggered with short pins (15) and long pins (17), and the positions of the short pins (15) and long pins (17) correspond to the acupoints and horizontal positions of the transparent piece, respectively.

6. The side-entry mold according to claim 3, characterized in that: The screw (19) has opposite thread directions on both sides, and the threaded block (21) moves at the bottom of the demolding cavity (18).

7. The side-gluing injection mold according to claim 1, characterized in that: Hydraulic cylinders (14) are provided at the four corners of the upper mold (1). Hydraulic rods (11) are provided at the movable ends of the hydraulic cylinders (14). Fixing blocks (9) are fixed at corresponding positions around the upper mold (1). The top of the hydraulic rods (11) is fixedly connected to the fixing blocks (9).

8. The side-gluing injection mold according to claim 1, characterized in that: The lower mold (13) is provided with a heating wire (25) near the cavity of the groove (12), and a temperature controller (23) is installed on the right side wall of the lower mold (13). The heating wire (25) and the heat preservation tank (5) are both controlled by the temperature controller (23).

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