Automobile wire harness connector production injection mold

Abstract

The utility model discloses a kind of automobile wire harness connector production injection mould, including upper die and lower die, the upper end outer surface of upper die is fixedly installed with top plate, the lower part of lower die is provided with substrate, the left and right ends between the left and right ends of the outer surface of lower die lower end and substrate upper end are fixedly installed with support side plate, the upper end of substrate is installed with thimble structure.The utility model said a kind of automobile wire harness connector production injection mould, heating wire is set, with the effect of heating, and cooperate heat insulation ring, reduce the heat loss of material when flowing in pouring channel, improve the quality of product, cooling liquid enters one-way valve, cooling liquid exhaust one-way valve and guide disc channel are set, turbulence protruding point is installed in the inside of guide disc channel, pass through turbulence protruding point, destroy condensate flow boundary layer, enhance turbulence, improve the efficiency of heat exchange, to improve the efficiency of cooling.

Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness connector injection mold technology, specifically an automotive wiring harness connector production injection mold. Background Technology

[0002] As a key component in automotive electrical systems, the quality of automotive wiring harness connectors directly affects the safety and reliability of the entire vehicle.

[0003] Currently, automotive wiring harness connectors are mainly produced through injection molding. However, in the existing technology, injection molds still have the following significant drawbacks:

[0004] 1. Insufficient material temperature control: During the injection molding process, when the molten plastic flows from the pouring channel of the upper mold to the mold cavity, the material temperature will gradually decrease due to the lack of effective heating measures, resulting in reduced fluidity. This may not only cause problems such as insufficient filling and product surface defects, but also affect the dimensional accuracy and mechanical properties of the product.

[0005] 2. Low cooling efficiency: Traditional injection mold cooling systems often use simple straight-through water channels. When the coolant flows, it is easy to form a laminar flow state, resulting in low heat exchange efficiency. Uneven cooling or slow cooling speed will prolong the molding cycle, reduce production efficiency, and may also cause internal stress concentration in the product, affecting its durability.

[0006] Therefore, we propose an injection mold for the production of automotive wiring harness connectors. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] In view of the shortcomings of the prior art, this utility model provides an injection mold for the production of automotive wiring harness connectors, which has the advantages of improving product quality and processing efficiency, and can effectively solve the problems in the background art.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an injection mold for producing automotive wiring harness connectors, comprising an upper mold and a lower mold. A top plate is fixedly installed on the upper outer surface of the upper mold. A base plate is provided at the lower part of the lower mold. Supporting side plates are fixedly installed between the left and right ends of the lower outer surface of the lower mold and the left and right ends of the upper outer surface of the base plate. An ejector pin structure is installed at the upper end of the base plate. A mold cavity is formed in the middle of the upper outer surface of the lower mold. An ejector pin hole is formed on the lower outer surface of the lower mold, and the upper end of the ejector pin hole communicates with the bottom of the mold cavity. A nozzle is provided in the middle of the upper outer surface of the top plate, and a positioning ring is provided at the upper end of the nozzle. The positioning ring is fixedly installed in the middle of the upper outer surface of the top plate. A pouring channel is provided in the middle of the lower outer surface of the upper mold. The upper end of the pouring channel is connected to the lower end of the nozzle. A heating wire and a heat insulation ring are fixedly installed inside the upper mold. The heat insulation ring is located around the heating wire. A guide channel is provided inside the lower mold. Turbulence protrusions are provided inside the guide channel. A coolant inlet check valve and a coolant outlet check valve are installed on the outer surface of one end of the lower mold.

[0011] Preferably, the guide channel is disposed on the periphery of the mold cavity, and one end of the outer surface of the guide channel is fixedly connected to the coolant inlet check valve, and the other end of the guide channel is fixedly connected to the coolant outlet check valve.

[0012] Preferably, the turbulence protrusions are hemispherical protrusions, evenly distributed on the inner wall of the guide plate channel, and the height of the protrusions is 1 / 5 to 1 / 3 of the width of the guide plate channel.

[0013] Preferably, the heating wire is a nickel-chromium alloy wire, which is spirally embedded inside the upper mold and the distance between it and the casting channel is 5-10mm.

[0014] Preferably, the heat insulation ring has a double-layer structure, with an inner layer of ceramic fiber and an outer layer of stainless steel reflective layer, both with a thickness of 2-3 mm.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an injection mold for manufacturing automotive wiring harness connectors, which has the following advantages:

[0017] 1. This injection mold for manufacturing automotive wiring harness connectors effectively reduces heat loss of molten plastic in the pouring channel by setting a spiral nickel-chromium alloy heating wire inside the upper mold and cooperating with a double-layer heat insulation ring (ceramic fiber layer + stainless steel reflective layer), maintaining stable fluidity, avoiding problems such as insufficient filling and surface defects caused by temperature drop, and significantly improving product molding quality.

[0018] 2. This type of injection mold for manufacturing automotive wiring harness connectors features a coolant inlet check valve, a coolant outlet check valve, and a guide plate channel. Turbulence protrusions are installed inside the guide plate channel to disrupt the condensate flow boundary layer, enhance turbulence, and improve heat exchange efficiency, thereby increasing cooling efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an injection mold for manufacturing automotive wiring harness connectors according to this utility model.

[0020] Figure 2 This is a side cross-sectional view of the top plate and the upper mold in the injection mold for manufacturing an automotive wiring harness connector according to this utility model.

[0021] Figure 3 This is a side cross-sectional view of the lower mold in an injection mold for manufacturing an automotive wiring harness connector according to this utility model.

[0022] Figure 4 This utility model relates to an injection mold for manufacturing automotive wiring harness connectors. Figure 3 Enlarged view of point A in the middle.

[0023] In the diagram: 1. Top plate; 2. Upper mold; 3. Sprue; 4. Lower mold; 5. Support side plate; 6. Ejector pin structure; 7. Base plate; 8. Positioning ring; 9. Coolant inlet check valve; 10. Coolant outlet check valve; 11. Heat insulation ring; 12. Heating wire; 13. Casting channel; 14. Mold cavity; 15. Ejector pin hole; 16. Guide plate channel; 17. Turbulence protrusion. Detailed Implementation

[0024] 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.

[0025] This embodiment is an injection mold for manufacturing automotive wiring harness connectors.

[0026] like Figure 1-4As shown, the mold includes an upper mold 2 and a lower mold 4. A top plate 1 is fixedly installed on the upper outer surface of the upper mold 2. A base plate 7 is provided at the lower part of the lower mold 4. Support side plates 5 are fixedly installed between the left and right ends of the lower outer surface of the lower mold 4 and the left and right ends of the upper outer surface of the base plate 7. An ejector pin structure 6 is installed at the upper end of the base plate 7. A mold cavity 14 is opened in the middle of the upper outer surface of the lower mold 4. An ejector pin hole 15 is opened in the lower outer surface of the lower mold 4, and the upper end of the ejector pin hole 15 is connected to the bottom of the mold cavity 14. A nozzle 3 is opened in the middle of the upper outer surface of the top plate 1. The upper end is provided with a positioning ring 8, which is fixedly installed in the middle of the upper outer surface of the top plate 1. The middle of the lower outer surface of the upper mold 2 is provided with a pouring channel 13, the upper end of the pouring channel 13 is connected to the lower end of the nozzle 3. The heating wire 12 and the heat insulation ring 11 are fixedly installed inside the upper mold 2. The heat insulation ring 11 is located around the heating wire 12. The lower mold 4 is provided with a guide plate channel 16 inside. The guide plate channel 16 is provided with turbulence protrusions 17 inside. A coolant inlet check valve 9 and a coolant outlet check valve 10 are installed on the outer surface of one end of the lower mold 4.

[0027] The guide channel 16 is located on the periphery of the mold cavity 14, and one end of the outer surface of the guide channel 16 is fixedly connected to the coolant inlet check valve 9, and the other end of the guide channel 16 is fixedly connected to the coolant outlet check valve 10. The turbulence protrusions 17 are hemispherical protrusions, evenly distributed on the inner wall of the guide channel 16, and the height of the protrusions is 1 / 5 to 1 / 3 of the width of the guide channel 16. The heating wire 12 is a nickel-chromium alloy wire, which is spirally embedded in the upper mold 2, and the distance between it and the casting channel 13 is 5-10mm. The heat insulation ring 11 has a double-layer structure, with an inner ceramic fiber layer and an outer stainless steel reflective layer, both with a thickness of 2-3mm.

[0028] It should be noted that this utility model is an injection mold for manufacturing automotive wiring harness connectors. The top plate 1, upper mold 2, nozzle 3, lower mold 4, supporting side plate 5, ejector pin structure 6, base plate 7, positioning ring 8, mold cavity 14, and ejector pin hole 15 described herein are all prior art and can be readily understood by those skilled in the art; therefore, further details are omitted. The heating wire 12 is installed around the casting channel 13 and inside the upper mold 2 for heating. A heat insulation ring 11 is provided around the heating wire 12. The heat insulation ring 11 has a double-layer structure: an inner ceramic fiber layer and an outer stainless steel reflective layer, both 2-3 mm thick. This, in conjunction with the heating wire 12, reduces heat loss. The ceramic fiber inner layer has… With extremely low thermal conductivity, it can effectively block the heat generated by the heating wire 12 from diffusing outward, reduce heat loss, and ensure that the plastic melt in the casting channel 13 maintains stable fluidity, thereby improving the injection molding quality. The stainless steel reflective outer layer can reflect radiant heat back to the casting channel 13, further reducing heat loss and improving heating efficiency. The coolant inlet check valve 9 and coolant outlet check valve 10 are both connected to external coolant circulation equipment. The coolant is conducted in the guide plate channel 16 to cool the product in the mold cavity 14, improving cooling efficiency. Furthermore, the guide plate channel 16 is provided with turbulence protrusions 17 to break the boundary layer of condensate flow, enhance turbulence, and improve heat exchange efficiency, thereby improving cooling efficiency.

[0029] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] 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.

Claims

1. An injection mold for manufacturing automotive wiring harness connectors, comprising an upper mold (2) and a lower mold (4), wherein a top plate (1) is fixedly mounted on the upper outer surface of the upper mold (2), a base plate (7) is provided at the lower part of the lower mold (4), and supporting side plates (5) are fixedly mounted between the left and right ends of the lower outer surface of the lower mold (4) and the left and right ends of the upper outer surface of the base plate (7), an ejector pin structure (6) is mounted on the upper end of the base plate (7), and a mold cavity (14) is opened in the middle of the upper outer surface of the lower mold (4). The lower outer surface of the mold (4) is provided with an ejector pin hole (15), and the upper end of the ejector pin hole (15) is connected to the bottom of the mold cavity (14). A nozzle (3) is provided in the middle of the upper outer surface of the top plate (1), and a positioning ring (8) is provided at the upper end of the nozzle (3). The positioning ring (8) is fixedly installed in the middle of the upper outer surface of the top plate (1). A pouring channel (13) is provided in the middle of the lower outer surface of the upper mold (2), and the upper end of the pouring channel (13) is connected to the lower end of the nozzle (3). The characteristic is that: The upper mold (2) is fixedly installed with a heating wire (12) and a heat insulation ring (11). The heat insulation ring (11) is located around the heating wire (12). The lower mold (4) is provided with a flow guide channel (16). The flow guide channel (16) is provided with turbulence protrusions (17). A coolant inlet check valve (9) and a coolant outlet check valve (10) are installed on the outer surface of one end of the lower mold (4).

2. The injection mold for manufacturing automotive wiring harness connectors according to claim 1, characterized in that: The guide channel (16) is located around the mold cavity (14), and one end of the outer surface of the guide channel (16) is fixedly connected to the coolant inlet check valve (9), and the other end of the guide channel (16) is fixedly connected to the coolant outlet check valve (10).

3. The injection mold for manufacturing automotive wiring harness connectors according to claim 2, characterized in that: The turbulence protrusions (17) are hemispherical protrusions, evenly distributed on the inner wall of the guide plate channel (16), and the height of the protrusions is 1 / 5 to 1 / 3 of the width of the guide plate channel (16).

4. The injection mold for manufacturing automotive wiring harness connectors according to claim 3, characterized in that: The heating wire (12) is a nickel-chromium alloy wire, which is spirally embedded inside the upper mold (2) and the distance between it and the casting channel (13) is 5-10 mm.

5. The injection mold for manufacturing automotive wiring harness connectors according to claim 4, characterized in that: The heat insulation ring (11) has a double-layer structure, with an inner layer of ceramic fiber and an outer layer of stainless steel reflective layer, both with a thickness of 2-3 mm.

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