Injection mold for flow guide part of engine compartment

Abstract

The utility model provides an engine compartment flow guide part injection mold which comprises a female mold plate and a male mold plate, the female mold plate is provided with a cavity, and the cavity is arranged on the opposite sides of the female mold plate and the male mold plate. The male mold plate is provided with a mold core, and the mold core is arranged on the opposite sides of the male mold plate and the female mold plate. A heat insulation plate is arranged on the side, away from the male mold plate, of the female mold plate and provided with a heat insulation cavity, a hot runner plate is arranged in the heat insulation cavity, a main sprue bush is arranged in the middle of the hot runner plate, secondary sprue bushes are arranged at the two ends of the hot runner plate respectively, and the main sprue bush is communicated with the secondary sprue bushes through runners formed in the hot runner plate. And a sprue of the secondary sprue bush penetrates to the upper side of the mold core. In the injection molding process, plastic melt in the runner is maintained at a proper temperature by the hot runner plate, waste materials generated by a traditional cold runner can be reduced, the production cost is reduced, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the field of injection molding, and in particular relates to an injection molding mold for an engine compartment flow guide. Background Art

[0002] The engine compartment deflector refers to a component used in the engine compartment to guide and optimize the airflow. The engine compartment deflector has a unique application environment and function, and usually has a large area and a thin thickness. In the injection molding process, for large thin-walled plastic products, in order to ensure that the plastic melt can evenly fill the mold core, a multi-gate design is often used. Multiple gates can speed up the filling speed of the plastic melt, avoid insufficient or uneven filling, shorten the injection molding cycle, and improve production efficiency. However, the multi-gate design leads to more cold material areas and runner volumes, thereby increasing material consumption and waste.

[0003] Therefore, the above problems need to be solved urgently. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the utility model provides an injection mold for an engine compartment guide part. The hot runner plate heats the plastic melt in the runner to maintain uniform flow of the molten material, reduce weld lines and bubbles, and improve product quality. There is no need to cut and remove the cold runner and gate system, which reduces material waste and improves production efficiency.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides an injection mold for an engine compartment guide part, including a mother template and a male template, which are arranged in sequence, and the mother template is provided with a cavity, and the cavity is arranged on the opposite side of the mother template and the male template. The male template is provided with a core, and the core is arranged on the opposite side of the male template and the mother template. A heat insulation board is provided on the side of the mother template away from the male template, and the heat insulation board is provided with a heat insulation cavity, and a hot runner plate is provided in the heat insulation cavity, and a main gate sleeve is provided in the middle of the hot runner plate, and the main gate sleeve is arranged on the side of the hot runner plate away from the mother template. Secondary gate sleeves are respectively provided at both ends of the hot runner plate, and the secondary gate sleeves are arranged on the side of the hot runner plate away from the main gate sleeve. The main gate sleeve is communicated with the secondary gate sleeve through the runner provided on the hot runner plate. The gate of the secondary gate sleeve passes through the upper side of the core. During the injection molding process, the female mold plate and the male mold plate are molded together, and the plastic melt is injected from the main gate sleeve. The plastic melt is injected into the mold cavity from the secondary gate sleeve through the runner of the hot runner plate. The above mold cavity consists of a cavity and a core. During this process, the hot runner plate continuously heats the plastic melt in the runner, so that the plastic melt is maintained at a suitable temperature for injection molding, reducing the waste generated by traditional cold runners and reducing production costs. Hot runners help fill plastic, avoid insufficient filling or uneven filling, and improve product appearance and quality.

[0006] Furthermore, in the above-mentioned injection mold for the engine compartment guide, the hot runner plate includes a top heating groove and a bottom heating groove, the top heating groove is arranged along the outer edge of the top surface of the hot runner plate, and the bottom heating groove is arranged along the outer edge of the bottom surface of the hot runner plate, and electric heating pipes are respectively arranged in the top heating groove and the bottom heating groove. The electric heating pipe can directly heat the hot runner plate, and the heating grooves distributed up and down ensure uniform temperature distribution and improve heating efficiency. The electric heating pipe cooperates with the temperature controller to achieve precise temperature control of the hot runner plate and optimize plastic fluidity and finished product quality.

[0007] Furthermore, in the above-mentioned injection mold for the engine compartment guide, the hot runner plate is provided with a first thermal insulation pad, which is arranged on the side of the hot runner plate away from the secondary gate sleeve, the first thermal insulation pad and the secondary gate sleeve are arranged coaxially, and second thermal insulation pads are arranged on both sides of the main gate sleeve, respectively, and the second thermal insulation pads are symmetrically arranged on the upper and lower sides of the hot runner plate. The thermal insulation pads arranged on the upper and lower sides of the hot runner plate can effectively isolate the heat from being transferred to other parts of the mold, reduce heat loss, improve energy efficiency, avoid damage to other sensitive parts of the mold due to heat, and extend the life of the mold.

[0008] Furthermore, in the above-mentioned injection mold for the engine compartment guide, a positioning thermal insulation pad is provided on the side of the hot runner plate away from the main gate sleeve, and the positioning thermal insulation pad is provided with a positioning column, the positioning column passes through the through hole provided on the positioning thermal insulation pad, the positioning column and the positioning thermal insulation pad are coaxial, the positioning thermal insulation pad and the main gate sleeve are coaxially arranged, and one end of the positioning column penetrates into the countersunk hole provided on the hot runner plate. The positioning column penetrates into the male template at one end away from the hot runner plate, and the female template is provided with a through hole corresponding to the positioning column. The positioning thermal insulation pad plays a role of heat insulation and support. One end of the positioning column penetrates into the female template, and the other end penetrates into the hot runner plate, providing positioning for the hot runner plate, so that the hot runner plate is in the designed position to avoid dislocation.

[0009] Furthermore, in the injection mold of the engine compartment air guide, the heat insulation board is provided with a wire groove, a junction box is provided outside the heat insulation board, one end of the wire groove is connected to the junction box, and the end of the wire groove away from the junction box is connected to the heat insulation cavity. The outer wall of the hot runner plate and the inner wall of the heat insulation cavity are kept at a distance.

[0010] Furthermore, in the above-mentioned injection mold for the engine compartment air guide, an ejector mechanism is provided on the side of the male mold plate away from the female mold plate, and the ejector mechanism ejects the injection-molded air guide plate.

[0011] Furthermore, in the above-mentioned injection mold for the engine compartment air guide, the female mold plate and the male mold plate are respectively provided with cooling water pipes, and the cooling water pipes are connected to the cooling system. The cooling water pipes can quickly cool and solidify the plastic melt in the mold cavity to form a product, accelerate the cooling process, shorten the molding cycle, thereby improving production efficiency and reducing production costs.

[0012] Furthermore, in the above-mentioned injection mold for the engine compartment guide component, a bottom plate is provided on the side of the ejector mechanism away from the male mold plate.

[0013] Furthermore, in the above-mentioned injection mold for the engine compartment guide piece, a panel is provided on the side of the heat insulation plate away from the mother mold plate.

[0014] Furthermore, in the above-mentioned injection mold of the engine compartment air guide, the panel is provided with a positioning ring. The positioning ring ensures that when the mold is installed on the injection molding machine, the gate sleeve of the mold and the nozzle of the injection molding machine can be accurately aligned to avoid misalignment.

[0015] It can be seen from the above technical scheme that the utility model has the following beneficial effects: in the injection mold of the engine compartment guide part of the utility model, during the injection molding process, the hot runner plate continuously heats the molten plastic in the runner, which can reduce the waste generated by the traditional cold runner and reduce production costs. The hot runner helps to fill the plastic, avoid insufficient or uneven filling, and improve the appearance and quality of the product. The upper and lower distributed heating grooves ensure uniform temperature distribution, and the electric heating tube cooperates with the temperature controller to achieve precise temperature control of the hot runner plate, optimizing the plastic fluidity and the quality of the finished product. The positioning insulation pad provides positioning for the hot runner plate, so that the hot runner plate is always in the designed position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the injection mold of the engine compartment guide piece of the utility model;

[0017] Figure 2 for Figure 1 A sectional view shown;

[0018] Figure 3 is a perspective view of the heat insulation board;

[0019] Figure 4 It is a schematic diagram of the hot runner plate structure.

[0020] In the figure: 1. panel, 11. positioning ring, 2. insulation board, 21. insulation cavity, 22. hot runner plate, 221. top heating groove, 222. bottom heating groove, 223. first insulation pad, 224. positioning insulation pad, 2241. positioning column, 225. second insulation pad, 23. secondary gate sleeve, 24. main gate sleeve, 25. wire trough, 26. junction box, 3. mother template, 31. cavity, 32. cooling water pipe, 4. male template, 41. core, 5. ejector mechanism, 6. bottom plate. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figure 1-2An injection mold for an engine compartment air guide shown in the figure comprises a female mold plate 3 and a male mold plate 4, which are arranged in sequence, and the female mold plate 3 is provided with a cavity 31, and the cavity 31 is arranged on the opposite side of the female mold plate 3 and the male mold plate 4. The male mold plate 4 is provided with a core 41, and the core 41 is arranged on the opposite side of the male mold plate 4 and the female mold plate 3. An ejector mechanism 5 is provided on the side of the male mold plate 4 away from the female mold plate 3. A bottom plate 6 is provided on the side of the ejector mechanism 5 away from the male mold plate 4. A heat insulation plate 2 is provided on the side of the female mold plate 3 away from the male mold plate 4, and the heat insulation plate 2 is provided with a heat insulation cavity 21, and a hot runner plate 22 is provided in the heat insulation cavity 21, and a main gate sleeve 24 is provided in the middle of the hot runner plate 22, and the main gate sleeve 24 is arranged on the side of the hot runner plate 22 away from the female mold plate 3, and secondary gate sleeves 23 are respectively provided at both ends of the hot runner plate 22 (see attached Figure 4 ), the secondary gate sleeve 23 is arranged on the side of the hot runner plate 22 away from the main gate sleeve 24, and the main gate sleeve 24 is connected to the secondary gate sleeve 23 through the flow channel provided on the hot runner plate 22. The gate of the secondary gate sleeve 23 penetrates to the upper side of the core 41. A panel 1 is provided on the side of the heat insulation board 2 away from the mother mold plate 3. The panel 1 is provided with a positioning ring 11. The mother mold plate 3 and the male mold plate 4 are respectively provided with cooling water pipes 32, and the cooling water pipes 32 are connected to the cooling system.

[0023] During the injection molding process, the female mold plate 3 and the male mold plate 4 are first molded together, and the plastic melt is injected from the main gate sleeve 24. The plastic melt is injected into the mold cavity from the secondary gate sleeve 23 through the flow channel of the hot runner plate 22. The above mold cavity is composed of a cavity 31 and a core 41. The cooling system injects cooling water into the cooling water pipe 32 to cool the plastic melt. Then the female mold plate 3 and the male mold plate 4 are separated, and the ejector mechanism 5 ejects the injection molded guide plate. The injection molding is completed.

[0024] like Figure 3-4In the injection mold of the engine compartment guide shown, the hot runner plate 22 includes a top heating groove 221 and a bottom heating groove 222. The top heating groove 221 is arranged along the outer edge of the top surface of the hot runner plate 22, and the bottom heating groove 222 is arranged along the outer edge of the bottom surface of the hot runner plate 22. Electric heating pipes are respectively arranged in the top heating groove 221 and the bottom heating groove 222. The hot runner plate 22 is provided with a first thermal insulation pad 223, which is arranged on the side of the hot runner plate 22 away from the secondary sprue sleeve 23. The first thermal insulation pad 223 and the secondary sprue sleeve 23 are coaxially arranged. Second thermal insulation pads 225 are respectively arranged on both sides of the main sprue sleeve 24, and the second thermal insulation pads 225 are symmetrically arranged on the upper and lower sides of the hot runner plate 22. A positioning heat insulation pad 224 is provided on the side of the hot runner plate 22 away from the main sprue sleeve 24. The positioning heat insulation pad 224 is provided with a positioning column 2241. The positioning column 2241 passes through the through hole provided on the positioning heat insulation pad 224. The positioning column 2241 and the positioning heat insulation pad 224 are coaxial. The positioning heat insulation pad 224 and the main sprue sleeve 24 are coaxially arranged. One end of the positioning column 2241 penetrates into the countersunk hole provided on the hot runner plate 22. One end of the positioning column 2241 away from the hot runner plate 22 penetrates into the male template 4, and the female template 3 is provided with a through hole corresponding to the positioning column 2241. One end of the positioning column 2241 penetrates into the female template 3, and the other end penetrates into the hot runner plate 22, providing positioning for the hot runner plate 22 so that the hot runner plate 22 is in the designed position. The insulation board 2 is provided with a wire slot 25, and a junction box 26 is provided outside the insulation board 2. One end of the wire slot 25 is connected to the junction box 26, and the end of the wire slot 25 away from the junction box 26 is connected to the insulation cavity 21. The outer wall of the hot runner plate 22 and the inner wall of the insulation cavity 21 are kept at a distance.

[0025] The above embodiments are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with this field can understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An injection mold for an engine compartment guide, characterized in that: The invention comprises a female template (3) and a male template (4), wherein the female template (3) and the male template (4) are arranged in sequence; the female template (3) is provided with a cavity (31), wherein the cavity (31) is arranged on the opposite side of the female template (3) and the male template (4); the male template (4) is provided with a core (41), wherein the core (41) is arranged on the opposite side of the male template (4) and the female template (3); a heat insulation board (2) is provided on the side of the female template (3) away from the male template (4), wherein the heat insulation board (2) is provided with a heat insulation cavity (21), wherein a heat flow A hot runner plate (22) is provided with a main sprue sleeve (24) in the middle of the hot runner plate (22), the main sprue sleeve (24) being arranged on a side of the hot runner plate (22) away from the mother mold plate (3), and secondary sprue sleeves (23) are respectively arranged at both ends of the hot runner plate (22), the secondary sprue sleeve (23) being arranged on a side of the hot runner plate (22) away from the main sprue sleeve (24), the main sprue sleeve (24) being connected to the secondary sprue sleeve (23) through a flow channel provided on the hot runner plate (22); and the sprue of the secondary sprue sleeve (23) is passed through the upper side of the core (41).

2. The injection mold for engine compartment guide piece according to claim 1, characterized in that: The hot runner plate (22) comprises a top surface heating groove (221) and a bottom surface heating groove (222); the top surface heating groove (221) is arranged along the outer edge of the top surface of the hot runner plate (22); the bottom surface heating groove (222) is arranged along the outer edge of the bottom surface of the hot runner plate (22); and electric heating pipes are respectively arranged in the top surface heating groove (221) and the bottom surface heating groove (222).

3. The injection mold for engine compartment guide piece according to claim 1, characterized in that: The hot runner plate (22) is provided with a first thermal insulation pad (223), the first thermal insulation pad (223) is arranged on a side of the hot runner plate (22) away from the secondary gate sleeve (23), the first thermal insulation pad (223) and the secondary gate sleeve (23) are coaxially arranged, and second thermal insulation pads (225) are respectively arranged on both sides of the main gate sleeve (24), and the second thermal insulation pads (225) are symmetrically arranged on the upper and lower sides of the hot runner plate (22).

4. The injection mold for engine compartment guide piece according to claim 1, characterized in that: A positioning heat insulation pad (224) is provided on the side of the hot runner plate (22) away from the main sprue sleeve (24), the positioning heat insulation pad (224) is provided with a positioning column (2241), the positioning column (2241) passes through a through hole provided on the positioning heat insulation pad (224), the positioning column (2241) and the positioning heat insulation pad (224) are coaxial, and the positioning heat insulation pad (224) and the main sprue sleeve (24) are coaxially arranged; one end of the positioning column (2241) penetrates into a countersunk hole provided on the hot runner plate (22); the end of the positioning column (2241) away from the hot runner plate (22) penetrates into a male mold plate (4), and the male mold plate (4) is provided with a through hole corresponding to the positioning column (2241).

5. The injection mold for engine compartment guide piece according to claim 1, characterized in that: The heat insulation board (2) is provided with a wire trough (25); a junction box (26) is provided on the outside of the heat insulation board (2); one end of the wire trough (25) is in communication with the junction box (26); and one end of the wire trough (25) away from the junction box (26) is in communication with the heat insulation cavity (21); and an outer wall of the hot runner plate (22) and an inner wall of the heat insulation cavity (21) are kept at a distance.

6. The injection mold for engine compartment guide piece according to claim 1, characterized in that: An ejector mechanism (5) is provided on the side of the male mold plate (4) away from the female mold plate (3), and the ejector mechanism (5) ejects the injection-molded guide plate.

7. The injection mold for engine compartment guide piece according to claim 1, characterized in that: The female mold plate (3) and the male mold plate (4) are respectively provided with cooling water pipes (32), the cooling water pipes (32) are respectively arranged in an array along the upper side of the mold cavity (31) and the lower side of the mold core (41), and the cooling water pipes (32) are connected to a cooling system.

8. The injection mold for engine compartment guide piece according to claim 6, characterized in that: A bottom plate (6) is provided on the side of the ejector mechanism (5) away from the male mold plate (4).

9. The injection mold for engine compartment guide piece according to claim 1, characterized in that: The heat insulation board (2) is provided with a panel (1) on the side away from the mother template (3).

10. The injection mold for engine compartment guide piece according to claim 9, characterized in that: The panel (1) is provided with a positioning ring (11).

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