Mold assembly, injection molding part and vehicle

Abstract

The invention provides a mold assembly, an injection molding part and a vehicle, and belongs to the technical field of vehicle interiors. The mold assembly comprises a fixed mold and a movable mold, the fixed mold is provided with a first molded surface matched with the inner wall of an injection molding part in structure, the injection molding part is provided with a hole, the first molded surface is provided with a protruding part used for blocking the hole, and the extending direction of the protruding part is consistent with the moving direction of the movable mold during demolding. The movable mold is provided with a second molded surface matched with the outer side of the bottom wall and the outer side wall of the injection molding part in structure, after the fixed mold and the movable mold are closed, one end of the protruding part abuts against the second molded surface, the first molded surface and the second molded surface jointly define an injection molding cavity matched with the injection molding part in structure, and the injection molding cavity is obliquely arranged. A first included angle a is formed between the inclination direction O of the injection molding cavity and the horizontal plane L1, a second included angle b is formed between the axial direction of the hole of the injection molding part in the horizontal state and the horizontal plane L2, and the first included angle a and the second included angle b are complementary.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle interior decoration, and in particular to a mold assembly, an injection molded part and a vehicle. Background Art

[0002] The mold assembly includes a fixed mold and a movable mold. After the fixed mold and the movable mold are closed, there is a cavity between the fixed mold and the movable mold that matches the structure of the injection molded part. The injection material is transported to the cavity through a pipeline to form an injection molded part. Then the movable mold carries the injection molded part and moves downward and separates from the fixed mold. Finally, the ejector assembly on the movable mold ejects the injection molded part, and the demolding is completed.

[0003] For injection molded parts with large holes, and when the orientation of the hole of the injection molded part in a horizontal state is inconsistent with the movable direction of the movable mold during demolding, the existing mold assembly adopts a forced pull-off method or a core pulling method. In the forced pull-off method of the undercut position, the undercut position of the product is easily damaged during the demolding process. Regarding the core pulling method, a first core pulling assembly that can move obliquely is provided on the movable mold, and a second core pulling assembly that can move obliquely is provided on the fixed mold. When the fixed mold and the movable mold are closed, the first core pulling assembly and the second core pulling assembly move relative to each other until one end of the second core pulling assembly is sealed against one end of the first core pulling assembly at the hole position of the injection molded part. After the injection molding is completed and before the fixed mold and the movable mold are separated, the second core pulling assembly and the first core pulling assembly are separated first, and then the movable mold is separated from the fixed mold, and finally the injection molded part located on the movable mold is ejected.

[0004] Since the hole is formed by core pulling, the abutting end of the second core pulling component and the first core pulling component will form a raised and burred parting line on the hole wall surface of the injection molded part, which affects the surface difference. The parting line can be seen from the appearance, affecting the appearance. Summary of the invention

[0005] The object of the present invention is to provide a mold assembly, which can improve the aesthetics of an injection molded part.

[0006] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, a mold assembly is provided, including a fixed mold and a movable mold, the fixed mold is provided with a first mold surface matching the inner wall structure of an injection molded part, the injection molded part has a hole, the first mold surface has a protrusion for blocking the hole, and the extension direction of the protrusion is consistent with the movement direction of the movable mold during demolding, the movable mold is provided with a second mold surface matching the outer side of the bottom wall and the outer side wall structure of the injection molded part, after the fixed mold and the movable mold are molded together, one end of the protrusion abuts against the second mold surface, the first mold surface and the second mold surface jointly form an injection cavity matching the structure of the injection molded part, and the injection cavity is arranged obliquely, and there is a first angle a between the inclination direction O of the injection cavity and the horizontal plane L1, and there is a second angle b between the axial direction of the hole of the injection molded part in a horizontal state and the horizontal plane L2, and the first angle a and the second angle b are complementary to each other.

[0008] According to one embodiment of the present invention, the fixed mold is provided with a first inclined portion, a third angle a1 is formed between the first inclined portion and the horizontal plane L3, the first molding surface is located on the first inclined portion, the movable mold has a second inclined portion, a fourth angle a2 is formed between the second inclined portion and the horizontal plane L4, the fourth angle a2 and the third angle a1 are both equal to the first angle a, and the second molding surface is located on the second inclined portion.

[0009] According to an embodiment of the present invention, the fixed mold is located directly above the movable mold, and the protrusion extends downward perpendicularly to the horizontal plane.

[0010] According to a second aspect of the present invention, there is provided an injection molded part, which is injection molded by the above-mentioned mold assembly.

[0011] According to one embodiment of the present invention, the injection molded part is a storage box for a sub-instrument panel, which is configured to place a mobile phone and can charge the mobile phone in a wired and / or wireless manner. The sub-instrument panel storage box includes a box shell and a fan. The box shell is injection molded by a mold assembly. The bottom wall of the box shell has at least one hole, and the angle between the axis of the hole and the horizontal plane L2 is non-right angle. The fan is arranged below the box shell, and the air outlet of the fan is connected to the hole.

[0012] According to one embodiment of the present invention, a downwardly concave platform is provided on the bottom wall of the box shell, the hole is located in the platform, and the platform is configured to enclose a cavity together with the mobile phone for air flow to dissipate heat.

[0013] According to an embodiment of the present invention, the auxiliary instrument panel storage box further comprises a soft pad, which is connected to and covers the inner wall of the box shell, and an air inlet hole is provided on the soft pad corresponding to the hole.

[0014] According to one embodiment of the present invention, at least one first wire hole is opened in the lower part of the side wall of the box shell or between the side wall and the bottom wall, and the soft pad is opened with a deformable second wire hole corresponding to the first wire hole, and the second wire hole is configured for the charging head to penetrate and block the charging head from exiting.

[0015] According to one embodiment of the present invention, the auxiliary instrument panel storage box also includes a decorative ring, and the side wall of the box shell extends to one side with a plurality of decorative ring mounting parts arranged at intervals, and the decorative ring mounting part is provided with a plug hole, and the lower end of the decorative ring has a rib corresponding to the plug hole, and one end of the rib passes through the edge of the soft pad and is plugged into the plug hole and fixed by welding.

[0016] The present invention also discloses a vehicle, which comprises the above-mentioned injection molded part.

[0017] An embodiment of the present invention has the following advantages or beneficial effects:

[0018] A mold assembly of the present invention comprises a fixed mold and a movable mold, wherein the fixed mold is provided with a first mold surface matching the inner wall structure of an injection molded part, the injection molded part has a hole, the first mold surface has a protrusion for blocking the hole, and the extension direction of the protrusion is consistent with the moving direction of the movable mold during demolding, and the movable mold is provided with a second mold surface matching the outer side of the bottom wall and the outer side wall structure of the injection molded part, after the fixed mold and the movable mold are molded together, one end of the protrusion abuts against the second mold surface, the first mold surface and the second mold surface jointly enclose an injection molding cavity matching the structure of the injection molded part, and the injection molding cavity is arranged obliquely, and there is a first Angle a, there is a second angle b between the axial direction of the hole of the injection molded part and the horizontal plane L2 when the injection molded part is in a horizontal state, the first angle a and the second angle b are complementary to each other, so that the axial direction of the hole of the injection molded part when the injection molding is completed and before demolding is consistent with the parting direction of the movable mold, so that demolding is convenient, because the raised part alone closes the hole, and the free end of the raised part abuts against the second mold surface, the parting line of the hole is located on the bottom wall of the injection molded part, making the appearance invisible, thereby improving the aesthetics, avoiding the risk of being easily damaged by forcibly pulling off the undercut position, and avoiding the problem of the hole wall surface affecting the surface difference and aesthetics by the core pulling method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0020] Figure 1 FIG. 1 is a cross-sectional view showing a movable mold and a fixed mold when the mold is closed according to an exemplary embodiment.

[0021] Figure 2 yes Figure 1 Enlarged view of part A.

[0022] Figure 3 FIG. 1 is a cross-sectional view of a movable mold and a fixed mold after mold separation according to an exemplary embodiment.

[0023] Figure 4 FIG. 1 is a top view of a sub-instrument panel storage box according to an exemplary embodiment.

[0024] Figure 5 4 is a cross-sectional view of a storage box of a sub-instrument panel taken along the AA direction according to an exemplary embodiment.

[0025] Figure 6 is a cross-sectional view of a bezel according to an exemplary embodiment.

[0026] Figure 7 is a perspective view of a sub-instrument panel storage box according to an exemplary embodiment.

[0027] Figure 8 FIG. 1 is a bottom view of a sub-instrument panel storage box according to an exemplary embodiment.

[0028] Fig. 9 The figure is a state diagram showing a mobile phone placed in a storage box of a secondary instrument panel for charging according to an exemplary embodiment.

[0029] The reference numerals are described as follows:

[0030] 1. Fixed mold; 11. Raised portion; 12. First inclined portion; 2. Moving mold; 21. Second inclined portion; 3. Sub-instrument panel storage box; 31. Box body; 311. Holes; 312. Sinking platform; 313. First line hole; 314. Decorative ring installation portion; 315. Partition plate; 32. Soft pad; 321. Anti-skid convex rib; 322. Second line hole; 323. Round hole; 33. Decorative ring; 331. Insert rib; 4. Driving device; 41. Cylinder body; 42. Rod body; 5. Sub-instrument panel; 6. Mobile phone; 7. Charging component; 71. USB data cable; 72. Charging head. DETAILED DESCRIPTION

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0032] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0033] like Figure 1-9 As shown, a mold assembly according to an embodiment of the present invention includes a fixed mold 1 and a movable mold 2.

[0034] The fixed mold 1 has a first mold surface in the middle that matches the inner wall structure of the injection molded part. The injection molded part has a hole 311. The first mold surface has a protrusion 11 for sealing the hole 311, and the extension direction of the protrusion 11 is consistent with the movement direction of the movable mold 2 during demolding. The movable mold 2 has a second mold surface that matches the outer side of the bottom wall and the outer side wall structure of the injection molded part.

[0035] When the movable mold 2 is molded with the fixed mold 1, the free end of the protrusion 11 abuts against the second molding surface, and the first molding surface and the second molding surface together form an injection cavity 13 that matches the structure of the injection molded part, and the injection cavity 13 is arranged obliquely, and the inclination direction O of the injection cavity 13 has a first angle a with the horizontal plane L1, such as Figure 5 As shown, there is a second angle b between the axial direction of the hole 311 of the injection molded part in the horizontal state and the horizontal plane L2, and the first angle a and the second angle b are complementary to each other, so that the axial direction of the hole 311 when the injection molding is completed and before the injection molded part is demoulded is different from the axial direction of the hole 311 when the injection molded part is in the horizontal state, and the axial direction of the hole 311 before the injection molded part is demoulded is consistent with the moving direction of the movable mold 2 when demoulding, so that demoulding is convenient. Since the protrusion 11 closes the hole alone, and the free end of the protrusion 11 abuts against the second molding surface, the parting line of the hole is located on the bottom wall of the injection molded part, that is, Figure 2 The middle B position makes the appearance invisible, improves the aesthetics, avoids the risk of being damaged by forced pulling by the inverted position, and avoids the problem of surface difference and aesthetics of the hole wall caused by the core pulling method.

[0036] For example, Figure 1 , 5 As shown in the figure, when the second angle b is 70 degrees, and the angle between the parting direction of the movable mold 2 and the horizontal plane is 90 degrees, the angle a between the inclined direction O of the injection cavity 13 and the horizontal plane L1 is 20 degrees. In this way, the angle between the axial direction of the hole 311 of the injection molded part before demolding and the horizontal plane is: 70 degrees + 20 degrees = 90 degrees, so that the axial direction of the hole 311 before demolding is consistent with the parting direction of the movable mold 2.

[0037] like Figure 1 , 2As shown, in a preferred embodiment of the present invention, the fixed mold 1 has a first inclined portion 12, a third angle a1 is formed between the first inclined portion 12 and the horizontal plane L3, and the first molding surface is located in the middle of the first inclined portion 12; the movable mold 2 has a second inclined portion 21, a fourth angle a2 is formed between the second inclined portion 21 and the horizontal plane L4, the fourth angle a2 and the third angle a1 are both equal to the first angle a, and the second molding surface is located in the middle of the second inclined portion 21.

[0038] When the edge of the first inclined portion 12 abuts against the edge of the second inclined portion 21 , the movable mold 2 and the fixed mold 1 are in place, and the first molding surface and the second molding surface together form an injection cavity 13 that matches the structure of the injection molded part.

[0039] The injection molding material is transported to the injection molding cavity 13 through the pipe and fills the injection molding cavity 13, finally forming an injection molding product. For example, when the injection molding is connected with other components, the inner wall of the injection molding is the visible area, and the bottom outer side and the side outer side of the injection molding are hidden by other components.

[0040] like Figure 1-3 As shown, in a preferred embodiment of the present invention, the fixed mold 1 is located directly above the movable mold 2, the protrusion 11 extends downward vertically from the horizontal plane, the movable mold 2 is connected to the rod body 42 of the driving device 4 which is perpendicular to the horizontal plane, and the cylinder body 41 of the driving device 4 drives the rod body 42 and the movable mold 2 to move vertically up and down. When the injection molding is completed, the movable mold 2 moves vertically downward and is separated from the fixed mold 1. The injection molded part will remain on the movable mold 2, and finally the injection molded part will be ejected by the ejection assembly, and the ejection direction of the ejection assembly is consistent with the direction of the main appearance surface of the injection molded part.

[0041] Compared with the horizontal distribution, the vertical distribution of the fixed mold 1 and the movable mold 2 can avoid the risk of undercut.

[0042] In a preferred embodiment of the present invention, the draft angle of the movable mold 2 is smaller than the draft angle of the fixed mold 1, so that the side where the injection molded part cooperates with the fixed mold 1 is a visible subjective side, and the side where the injection molded part cooperates with the movable mold 2 is the back side. Since the free end of the protrusion 11 abuts against the movable mold 2, the parting line of the hole 311 is located at the back end of the hole 311, thereby realizing a hidden parting line and improving the aesthetic appearance.

[0043] The present invention also discloses an injection molded part, which is injection molded by the above-mentioned mold assembly to improve aesthetics and reduce surface difference.

[0044] like Figure 1-9 As shown, in a preferred embodiment of the present invention, when the injection molded part is a sub-instrument panel storage box 3, the sub-instrument panel storage box 3 is configured to place a mobile phone, and the mobile phone can be charged in a wired and / or wireless manner.

[0045] The sub-instrument panel storage box 3 includes a box housing 31 and a fan. The box housing 31 is injection molded by a mold assembly. The bottom wall of the box housing 31 has at least one hole 311. When the box housing 31 is horizontally mounted on the sub-instrument panel 5, the angle between the axis of the hole 311 and the horizontal plane L2 is non-right angle. The fan is arranged below the box housing 31, and the air outlet of the fan is connected to the hole 311. For example, the hole 311 is located at the rear of the box housing 31. When the mobile phone is charging, the rear half of the mobile phone (the charging port position is the rear end of the mobile phone) is located above the hole 311, and the hole 311 has a certain inclination toward the front of the mobile phone.

[0046] The angle between the axis of hole 311 and horizontal plane L2 is not a right angle. The purpose is that oblique air intake has a better heat dissipation effect on the mobile phone than vertical upward air intake. When the air is inlet obliquely, the airflow flows through a larger area of ​​the mobile phone and takes away more heat. When the mobile phone is wirelessly fast charged, a certain oblique wind is blown in through hole 311 to reduce the surface temperature of the mobile phone and prevent the mobile phone from overheating. If the axis of hole 311 is perpendicular to horizontal plane L2, that is, it blows vertically upward, there will be airflow escaping to both sides of the mobile phone, resulting in poor heat dissipation effect.

[0047] When the angle between the axis of the hole 311 and the horizontal plane L2 is 70 degrees, the heat dissipation effect is optimal.

[0048] like Figure 4 , 5 As shown in FIG. 8 , in a preferred embodiment of the present invention, there are multiple holes 311 arranged in a grid shape, which can not only increase the air intake but also prevent large pieces of debris from entering the fan.

[0049] like Figure 5 As shown, in a preferred embodiment of the present invention, a sink 312 is provided on the bottom wall of the box shell 31, and the hole 311 is located in the sink 312. The sink 312 is configured to form a cavity together with the mobile phone for air flow to dissipate heat, thereby reducing the airflow escaping to both sides and improving the heat dissipation effect.

[0050] like Figure 4-7 As shown, in a preferred embodiment of the present invention, the sub-instrument panel storage box 3 also includes a soft pad 32 with elastic properties, the soft pad 32 is connected to the inner wall of the box shell 31 and covers the inner wall, the soft pad 32 is provided with an air inlet hole corresponding to the hole 311, and the soft pad 32 has a plurality of parallel and spaced anti-slip ribs 321 to increase friction, prevent the mobile phone from shaking and colliding with the side wall, and enhance the protection of the mobile phone 6.

[0051] like Figure 4 , 5As shown in FIGS. 7 and 8, in a preferred embodiment of the present invention, at least one first thread hole 313 is provided at the lower part of the side wall or between the side wall and the bottom wall of the box shell 31, and a second thread hole 322 that can be expanded and deformed is provided in the soft pad 32 corresponding to the first thread hole 313. The charging head 72 of the charging assembly 7 passes through the first thread hole 313 and the second thread hole 322 and extends into the storage box 3 of the auxiliary instrument panel for charging the mobile phone. When the charging head 72 passes through the second thread hole 322, the second thread hole 322 is expanded so that the charging head 72 can pass through. After the charging head 72 passes through the second thread hole 322, the second thread hole 322 returns to its initial size. At this time, the charging head 72 cannot pass through the second thread hole 322 to exit the storage box 3 of the auxiliary instrument panel. Only when a sufficiently large external force is applied to the second thread hole 322 can the second thread hole 322 be deformed, so that the charging head 72 is limited in the storage box 3 of the auxiliary instrument panel, thereby facilitating charging.

[0052] Since the second wire hole 322 is located at the lower part of the side wall of the box shell 31 or between the side wall and the bottom wall, the mobile phone can be placed flat in the auxiliary instrument panel storage box 3 when charging, avoiding damage to the charging module and the charging head 72 of the mobile phone 6, thereby improving the service life of the charging module and the charging head 72 of the mobile phone 6.

[0053] The opening size of the first wire hole 313 is larger than the size of the second wire hole 322 when no external force is applied. The first wire hole 313 is an elliptical hole, and the second wire hole 322 is a thin strip hole, the width of which is smaller than the diameter of the USB data cable 71 .

[0054] Preferably, Figure 4 As shown, a circular hole 323 having a diameter equivalent to that of the USB data cable 71 is opened in the middle of the second cable hole 322 , and the circular hole 323 is connected to the second cable hole 322 . When the USB data cable 71 is inserted into the second cable hole 322 , the circular hole 323 clamps the USB data cable 71 .

[0055] When the auxiliary instrument panel storage box 3 is installed on the auxiliary instrument panel 5 , the auxiliary instrument panel 5 covers the side and bottom of the auxiliary instrument panel storage box 3 , thereby improving the aesthetics.

[0056] The USB data cable 71 of the charging component 7 is electrically connected to the charging head 72 , and the USB data cable 71 is hidden in the skeleton cavity of the auxiliary instrument panel 5 , thereby further improving the aesthetics.

[0057] like Figure 6-7As shown, in a preferred embodiment of the present invention, the auxiliary instrument panel storage box 3 also includes a decorative ring 33, and a side wall of the box shell 31 extends to one side with a plurality of decorative ring mounting portions 314 arranged at intervals, and the decorative ring mounting portion 314 is provided with a socket, and the lower end of the decorative ring 33 has a rib 331 corresponding to the socket, and one end of the rib 331 passes through the edge of the soft pad 32 and is plugged into the socket and welded and fixed, and the decorative ring 33 has a coating for improving the aesthetics. The decorative ring 33 not only has the function of improving the aesthetics, but the decorative ring 33 also clamps the edge of the soft pad 32 together with the decorative ring mounting portion 314 to prevent the edge of the soft pad 32 from turning outward, thereby improving the service life of the soft pad 32.

[0058] like Figure 4 As shown, in a preferred embodiment of the present invention, a partition plate 315 extends upward from the bottom wall of the box shell 31, a first distance is defined between the left side wall of the box shell 31 and the partition plate 315, and a second distance is defined between the right side wall of the box shell 31 and the partition plate 315, and both the first distance and the second distance are slightly larger than the width of the mobile phone, thereby limiting the position of the mobile phone 6 and preventing the mobile phone 6 from shaking or bumping.

[0059] The embodiment of the present invention further provides a vehicle, including a vehicle body, a sub-instrument panel 5 disposed in the vehicle body, and the above-mentioned sub-instrument panel storage box 3, wherein the rear of the sub-instrument panel 5 is provided with a cup groove for placing a cup body and a storage box with a cover located behind the cup groove, the sub-instrument panel storage box 3 is disposed in front of the cup groove, and the box body 31 of the sub-instrument panel storage box 3 is not provided with a cover body, so as to facilitate the taking and placing of a mobile phone 6. The vehicle of the present invention includes the above-mentioned injection molded parts, thereby achieving the improvement of the aesthetics of the interior.

[0060] Of course, the injection molded part is not limited to being a storage box for the auxiliary instrument panel, and those skilled in the art can select the type of the injection molded part according to actual needs.

[0061] In the embodiments of the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0062] In the description of the embodiments of the present invention, it needs to be understood that the directions or positional relationships indicated by the terms "upper" and "lower" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0063] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold assembly, characterized in that: The invention comprises a fixed mold (1) and a movable mold (2), wherein the fixed mold (1) has a first mold surface that matches the inner wall structure of the injection molded part, the injection molded part has a hole (311), the first mold surface has a protrusion (11) for blocking the hole (311), and the extension direction of the protrusion (11) is consistent with the movement direction of the movable mold (2) when demoulding, and the movable mold (2) has a second mold surface that matches the outer side of the bottom wall and the outer side wall structure of the injection molded part, and the fixed mold (1) and the movable mold ( 2) After the mold is closed, the raised portion (11) abuts against the second mold surface, the first mold surface and the second mold surface together form an injection cavity (13) that matches the structure of the injection molded part, and the injection cavity (13) is arranged obliquely, and there is a first angle a between the inclination direction O of the injection cavity (13) and the horizontal plane L1, and there is a second angle b between the axial direction of the hole (311) of the injection molded part in a horizontal state and the horizontal plane L2, and the first angle a and the second angle b are complementary to each other.

2. The mold assembly according to claim 1, characterized in that: The fixed mold (1) has a first inclined portion (12), a third angle a1 is formed between the first inclined portion (12) and a horizontal plane L3, and the first molding surface is located on the first inclined portion (12). The movable mold (2) has a second inclined portion (21), a fourth angle a2 is formed between the second inclined portion (21) and a horizontal plane L4, the fourth angle a2 and the third angle a1 are both equal to the first angle a, and the second molding surface is located on the second inclined portion (21).

3. The mold assembly according to claim 1, characterized in that: The fixed mold (1) is located directly above the movable mold (2), and the raised portion (11) extends downward perpendicularly to the horizontal plane.

4. An injection molded part, characterized in that: The injection molded part is injection molded by the mold assembly described in any one of claims 1-3.

5. The injection molded part according to claim 4, characterized in that: The injection molded part is a sub-instrument panel storage box (3), which is configured to hold a mobile phone and can charge the mobile phone in a wired and / or wireless manner. The sub-instrument panel storage box (3) comprises a box shell (31) and a fan. The box shell (31) is injection molded by the mold assembly. The bottom wall of the box shell (31) has at least one hole (311), and the angle between the axis of the hole (311) and the horizontal plane L2 is non-right angle. The air outlet of the fan is connected to the hole (311).

6. The injection molded part according to claim 5, characterized in that: The bottom wall of the box housing (31) is provided with a downwardly concave sink (312), the hole (311) is located in the sink (312), and the sink (312) is configured to form a cavity together with the mobile phone for air flow and heat dissipation.

7. The injection molded part according to claim 6, characterized in that: The auxiliary instrument panel storage box (3) further comprises a soft pad (32), the soft pad (32) being connected to the inner wall of the box shell (31) and covering the inner wall, the soft pad (32) being provided with an air inlet hole corresponding to the hole (311), and the soft pad (32) having a plurality of parallel and spaced anti-slip ribs (321).

8. The injection molded part according to claim 7, characterized in that: At least one first wire hole (313) is provided at the lower part of the side wall or between the side wall and the bottom wall of the box shell (31), and a deformable second wire hole (322) is provided on the soft pad (32) corresponding to the first wire hole (313), and the second wire hole (322) is configured to allow a charging head to penetrate and to prevent the charging head from exiting.

9. The injection molded part according to claim 7, characterized in that: The auxiliary instrument panel storage box (3) further comprises a decorative ring (33); a plurality of decorative ring mounting portions (314) arranged at intervals are extended to one side of a side wall of the box housing (31); a plug hole is provided on the decorative ring mounting portion (314); a lower end of the decorative ring (33) corresponds to the plug hole and has an insert rib (331); one end of the insert rib (331) passes through an edge of the soft pad (32) and is plugged into the plug hole and fixed by welding.

10. A vehicle, characterized in that: The vehicle comprises the injection molded part according to any one of claims 4-9.

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