High-precision injection mold mechanism for mud splashing prevention mud guard of automobile

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a high-precision injection mold mechanism for an automobile mud splash preventing fender. The mud guard forming die comprises a mud guard forming lower die, and a first forming insert panel and a second forming insert panel are arranged on the mud guard forming lower die. In the injection molding process, the first molding insert panel is attached to the second molding insert panel, the main molding surface is matched with the first molding insert panel to form two complete molding surfaces, and a molten material can synchronously flow in from the inner side and the outer side of the main molding surface through the inner side and outer side synchronous shunting injection molding assembly, so that the injection molding speed is increased; the fender protrusion forming part and the fender positioning concave strip forming part can synchronously form a protrusion structure and a positioning concave strip structure of a plastic part, the side core-pulling structure can synchronously form a side hole groove structure of the plastic part, secondary machining is not needed, the working procedure is shortened, the overall quality of the plastic part is improved, meanwhile, a splicing type structure is adopted to form a forming face, and the forming efficiency is improved. Subsequent maintenance and replacement are facilitated, and the use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a high-precision automobile anti-mud splash fender injection mold mechanism. Background Art

[0002] Lightweighting of automobile parts is the main way to reduce automobile manufacturing costs and automobile energy consumption. In addition to the fact that most parts are "plastic instead of steel", more and more parts are lightweighted by reducing the thickness of the material. In particular, large parts on automobiles such as fenders are plate-type structures installed behind the outer frame of the wheel, and their materials are usually general-purpose plastics. At present, automobile fenders are injection molded using injection molds. Due to the installation and positioning requirements of the fenders, the fenders need to be provided with a number of protrusions, positioning grooves and side holes. During the injection molding process, the existing fender molds are difficult to synchronously mold the protrusions, positioning grooves and side holes of the fenders, and secondary processing is required. There are many processes, and subsequent processing is likely to affect the overall quality of the plastic parts, which is costly. Therefore, it is urgent to design a high-precision automobile anti-mud splash fender injection mold mechanism that can overcome the above defects.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses an injection mold for an automobile fender [application number: 202310221556.2], which includes a fixed mold assembly, a movable mold assembly and a feeding mechanism. A product cavity is formed between the fixed mold assembly and the movable mold assembly. The feeding mechanism includes: a hot runner, which is arranged on the fixed mold assembly, and a first branch channel and a second branch channel are arranged at the lower part of the fixed mold assembly; a first valve needle and a second valve needle, which are movably abutted against the first branch channel and the second branch channel. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a high-precision automobile anti-mud splash fender injection mold mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-precision automobile anti-mud splash fender injection mold mechanism comprises a fender molding lower mold, the fender molding lower mold is provided with a first molding panel and a second molding panel, the second molding panel is provided with two main molding surfaces symmetrical along the center line of the second molding panel, the main molding surfaces are provided with a fender convex molding part and a fender positioning concave molding part, the second molding panel is also provided with an inner and outer synchronous shunt injection molding component, the inner and outer synchronous shunt injection molding component corresponds to the position of the main molding surface, and the fender molding lower mold is provided with a side core pulling structure that can perform horizontal reciprocating motion along one end close to or away from the first molding panel.

[0007] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, the inner and outer synchronous diversion injection molding components include an inner diversion channel and an outer diversion channel arranged on the second molding panel, the inner diversion channel is opposite to the inner side of the main molding surface, and the outer diversion channel is opposite to the outer side of the main molding surface.

[0008] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, a flow channel connecting insert is provided between the inner branch flow channel and the main molding surface, and a drainage groove is provided in the flow channel connecting insert. One side of the drainage groove is connected to the inner branch flow channel, and the other side is connected to the main molding surface.

[0009] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, the fender protrusion molding portion includes a plurality of fender protrusion molding shaft seats arranged on the main molding surface, and the fender protrusion molding shaft seats are integrally molded with the second molding panel.

[0010] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, an ejection hole is provided in the fender protrusion molding shaft seat.

[0011] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, the fender positioning concave strip molding portion includes a fender positioning concave strip molding groove arranged on the main molding surface, and the fender positioning concave strip molding groove is arc-shaped.

[0012] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, the side core pulling structure includes a plurality of side core pulling slides and end core pulling slides arranged on the fender molding lower mold, and the side core pulling slides and end core pulling slides are staggered.

[0013] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, core pulling rods are installed inside the side core pulling slide and the end core pulling slide.

[0014] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, a plurality of straight push rods which sequentially penetrate through the first molding panel and the second molding panel are arranged below the fender molding lower mold.

[0015] In the above-mentioned high-precision automobile anti-mud splash fender injection mold mechanism, a push rod connecting plate is provided below the fender molding lower mold, and the straight push rod is connected to the push rod connecting plate.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. During the injection molding process of the utility model, the first molding panel and the second molding panel are fitted together, and the main molding surface cooperates with the first molding panel to form two complete molding surfaces. The molten material can flow in synchronously from the inner and outer sides of the main molding surface through the inner and outer synchronous diversion injection molding components, which speeds up the injection molding rate. The fender convex molding part and the fender positioning concave strip molding part can synchronously mold the convex structure and the positioning concave strip structure of the plastic part, and the side core pulling structure can synchronously mold the side hole groove structure of the plastic part. No secondary processing is required, the process is shortened, and the overall quality of the plastic part is improved. At the same time, the splicing structure is used to form the molding surface, which is convenient for subsequent maintenance and replacement and reduces the use cost.

[0018] 2. After the injection molding of the utility model is completed, the ejection hole can cooperate with the ejector rod to synchronously eject the fender protrusion structure, thereby reducing the ejection dead angle.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a partial structural schematic diagram of the utility model.

[0022] Figure 3 It is a partial structural schematic diagram of the utility model in another direction.

[0023] Figure 4 It is a schematic diagram of the structure of the flow channel connection insert.

[0024] In the figure: a fender molding lower mold 1, a first molding panel 2, a second molding panel 3, a main molding surface 4, a fender convex molding portion 5, a fender positioning concave molding portion 6, an inner and outer synchronous flow diversion injection molding component 7, a side core pulling structure 8, an inner diversion channel 9, an outer diversion channel 10, a channel connecting insert 11, a fender convex molding shaft seat 12, a fender positioning concave molding groove 13, a side core pulling slide 14, an end core pulling slide 15, a straight ejector rod 16, and an ejector rod connecting plate 17. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-4As shown, a high-precision automobile anti-mud splash fender injection mold mechanism includes a fender molding lower mold 1, on which a first molding panel 2 and a second molding panel 3 are provided, and the second molding panel 3 is provided with two main molding surfaces 4 symmetrical along the center line of the second molding panel 3, and the main molding surfaces 4 are provided with a fender convex molding part 5 and a fender positioning concave molding part 6, and the second molding panel 3 is also provided with an inner and outer synchronous shunt injection molding component 7, and the inner and outer synchronous shunt injection molding component 7 corresponds to the position of the main molding surface 4, and the fender molding lower mold 1 is provided with a side core pulling structure 8 that can perform horizontal reciprocating motion along one end close to or away from the first molding panel 2.

[0027] In this embodiment, during the injection molding process, the first molding panel 2 and the second molding panel 3 are fitted together, and the main molding surface 4 cooperates with the first molding panel 2 to form two complete molding surfaces. The molten material can flow in synchronously from the inside and outside of the main molding surface 4 through the inner and outer synchronous diversion injection molding components 7, thereby accelerating the injection molding rate. The fender convex molding part 5 and the fender positioning concave strip molding part 6 can synchronously mold the convex structure and the positioning concave strip structure of the plastic part, and the side core pulling structure 8 can synchronously mold the side hole groove structure of the plastic part. There is no need for secondary processing, which shortens the process and improves the overall quality of the plastic part. At the same time, the splicing structure is used to form the molding surface, which is convenient for subsequent maintenance and replacement and reduces the cost of use.

[0028] Combination Figure 1-4 As shown, the inner and outer synchronous flow-dividing injection molding assembly 7 includes an inner flow-dividing channel 9 and an outer flow-dividing channel 10 arranged on the second molding panel 3 , wherein the inner flow-dividing channel 9 is opposite to the inner side of the main molding surface 4 , and the outer flow-dividing channel 10 is opposite to the outer side of the main molding surface 4 .

[0029] Specifically, the molten material can flow in synchronously from both the inner and outer sides of the main molding surface 4 through the inner branch channel 9 and the outer branch channel 10, thereby accelerating the injection molding rate.

[0030] A flow channel connecting insert 11 is provided between the inner branch flow channel 9 and the main molding surface 4 . A drainage groove is provided in the flow channel connecting insert 11 . One side of the drainage groove is connected to the inner branch flow channel 9 , and the other side is connected to the main molding surface 4 .

[0031] In this embodiment, the molten material flows into the flow channel connecting insert 11 through the inner branch channel 9, and then flows into the inner side of the main molding surface 4 through the drainage groove, and the drainage accuracy is high.

[0032] Combination Figure 1 , Figure 2 As shown, the fender protrusion molding portion 5 includes a plurality of fender protrusion molding axle seats 12 arranged on the main molding surface 4 , and the fender protrusion molding axle seats 12 are integrally formed with the second molding panel 3 .

[0033] In this embodiment, during the injection molding process, the fender protrusion molding shaft seat 12 is used to simultaneously mold the protrusion structure of the plastic part, without the need for secondary processing, thereby shortening the process and improving the overall quality of the plastic part.

[0034] The fender protrusion forming axle seat 12 is provided with an ejection hole.

[0035] In this embodiment, after the injection molding is completed, the ejection hole can cooperate with the ejector rod to synchronously eject the fender protrusion structure.

[0036] Combination Figure 1 As shown, the fender positioning concave strip forming portion 6 includes a fender positioning concave strip forming groove 13 arranged on the main forming surface 4, and the fender positioning concave strip forming groove 13 is arc-shaped.

[0037] In this embodiment, the fender positioning concave strip molding groove 13 is used to simultaneously mold the positioning concave strip structure of the plastic part, without the need for secondary processing, thus shortening the process and improving the overall quality of the plastic part.

[0038] The side core pulling structure 8 includes a plurality of side core pulling slides 14 and an end core pulling slide 15 arranged on the fender forming lower mold 1. The side core pulling slides 14 and the end core pulling slides 15 are arranged alternately, and core pulling rods are installed on the inner sides of the side core pulling slides 14 and the end core pulling slides 15.

[0039] In this embodiment, during the injection molding process, the core pulling rod can simultaneously form the side hole groove structure of the plastic part, without the need for secondary processing, shortening the process and improving the overall quality of the plastic part. After the injection molding is completed, the mold is opened, the side core pulling slide 14 and the end core pulling slide 15 are moved away from the plastic part, and the core pulling rod is pulled away from the plastic part to complete the core pulling action.

[0040] Combination Figure 1-4 As shown, a plurality of straight push rods 16 which pass through the first molding panel 2 and the second molding panel 3 in sequence are arranged below the fender molding lower mold 1 , and a push rod connecting plate 17 is arranged below the fender molding lower mold 1 , and the straight push rods 16 are connected to the push rod connecting plate 17 .

[0041] In this embodiment, after the injection molding is completed, the mold is opened and the core is pulled out, and the ejector connecting plate 17 is moved to eject the molded plastic part through the straight ejector 16.

[0042] The working principle of the utility model is:

[0043] During the injection molding process, the first molding panel 2 and the second molding panel 3 are fitted together, and the main molding surface 4 cooperates with the first molding panel 2 to form two complete molding surfaces. The molten material can flow in synchronously from the inside and outside of the main molding surface 4 through the inner branch channel 9 and the outer branch channel 10, which speeds up the injection molding rate. The molten material flows into the flow channel connecting insert 11 through the inner branch channel 9, and then flows into the inside of the main molding surface 4 through the drainage groove. The drainage accuracy is high. During the injection molding process, the fender protrusion molding shaft seat 12 is used to synchronously mold the protrusion structure of the plastic part, the fender positioning concave molding groove 13 is used to synchronously mold the positioning concave structure of the plastic part, and the core pulling rod can synchronously mold the side hole groove structure of the plastic part. There is no need for secondary processing, which shortens the process and improves the overall quality of the plastic part. At the same time, the splicing structure is used to form the molding surface, which is convenient for subsequent maintenance and replacement, and reduces the use cost.

[0044] After the injection molding is completed, the ejection hole can cooperate with the ejector rod to synchronously eject the fender protrusion structure. After the injection molding is completed, the mold is opened, the side core pulling slide 14 and the end core pulling slide 15 are moved to the side away from the plastic part, and the core pulling rod is pulled away from the plastic part to complete the core pulling action. After the injection molding is completed, the mold is opened and the core pulling is completed. The ejector rod connecting plate 17 is moved, and the molded plastic part is ejected through the straight ejector rod 16.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0046] Although the terms such as fender molding lower die 1, first molding panel 2, second molding panel 3, main molding surface 4, fender protrusion molding part 5, fender positioning concave strip molding part 6, inner and outer synchronous flow splitting injection molding component 7, side core pulling structure 8, inner side flow splitter 9, outer side flow splitter 10, flow channel connecting insert 11, fender protrusion molding shaft seat 12, fender positioning concave strip molding groove 13, side core pulling slide 14, end core pulling slide 15, straight ejector 16, ejector connecting plate 17 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model, and interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A high-precision automobile anti-mud splash fender injection mold mechanism, comprising a fender molding lower mold (1), characterized in that: The mudguard molding lower mold (1) is provided with a first molding panel (2) and a second molding panel (3); the second molding panel (3) is provided with two main molding surfaces (4) symmetrical along the center line of the second molding panel (3); the main molding surfaces (4) are provided with a mudguard protrusion molding part (5) and a mudguard positioning concave molding part (6); the second molding panel (3) is also provided with an inner and outer synchronous flow-dividing injection molding component (7); the inner and outer synchronous flow-dividing injection molding component (7) corresponds to the position of the main molding surface (4); the mudguard molding lower mold (1) is provided with a side core-pulling structure (8) that can perform horizontal reciprocating motion along one end close to or away from the first molding panel (2).

2. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 1 is characterized in that: The inner and outer synchronous flow-dividing injection molding component (7) comprises an inner flow-dividing channel (9) and an outer flow-dividing channel (10) arranged on the second molding panel (3), wherein the inner flow-dividing channel (9) is opposite to the inner side of the main molding surface (4), and the outer flow-dividing channel (10) is opposite to the outer side of the main molding surface (4).

3. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 2 is characterized in that: A flow channel connecting insert (11) is provided between the inner flow channel (9) and the main molding surface (4), and a drainage groove is provided in the flow channel connecting insert (11), one side of the drainage groove is connected to the inner flow channel (9), and the other side is connected to the main molding surface (4).

4. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 3 is characterized in that: The fender protrusion forming portion (5) comprises a plurality of fender protrusion forming axle seats (12) arranged on the main forming surface (4), and the fender protrusion forming axle seats (12) are integrally formed with the second forming panel (3).

5. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 4 is characterized in that: The fender protrusion forming shaft seat (12) is provided with an ejection hole.

6. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 5 is characterized in that: The fender positioning concave strip forming portion (6) comprises a fender positioning concave strip forming groove (13) arranged on the main forming surface (4), and the fender positioning concave strip forming groove (13) is arc-shaped.

7. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 6 is characterized in that: The side core pulling structure (8) comprises a plurality of side core pulling slides (14) and end core pulling slides (15) arranged on the fender forming lower mold (1), and the side core pulling slides (14) and end core pulling slides (15) are arranged in an alternating manner.

8. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 7 is characterized in that: The inner sides of the side core-pulling slide seat (14) and the end core-pulling slide seat (15) are both provided with core-pulling rods.

9. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 8, characterized in that: A plurality of straight push rods (16) which sequentially penetrate the first molding panel (2) and the second molding panel (3) are arranged below the fender molding lower mold (1).

10. The high-precision automobile anti-mud splash fender injection mold mechanism according to claim 9, characterized in that: A push rod connecting plate (17) is provided below the fender forming lower die (1), and the straight push rod (16) is connected to the push rod connecting plate (17).

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