Injection molding part and injection mold

Abstract

The utility model provides an injection molding part and an injection mold, and relates to the technical field of injection molding, and the injection molding part comprises a supporting part and a main body part; the supporting part is provided with a first end face and a second end face which are opposite in the first direction and a side wall face located between the first end face and the second end face, and a partial area of the second end face is sunken to form a forming groove; the main body part and the supporting part form an integrated structure, and the main body part protrudes out of the first end face in the first direction; wherein the injection molding part is provided with a front mold forming face and a rear mold forming face, the front mold forming face comprises the outer surface of the main body part and the first end face, and the rear mold forming face comprises the groove wall face of the forming groove, the second end face and at least part of the side wall face. According to the injection molding part, the forming quality of the injection molding part can be improved, and the manufacturing cost of an injection mold can be reduced.

Description

Technical Field

[0001] This application relates to the field of injection molding technology, and in particular to an injection molded part and an injection mold. Background Technology

[0002] Taking a grating panel as an example, a grating panel is typically an injection-molded component. The grating panel includes a support portion and a main body portion. The main body portion is used for airflow guidance, and the support portion supports the main body portion. The support portion includes a first end face and a second end face, and the main body portion protrudes from the first end face. During the injection molding process of the grating panel, the main body portion and the first end face are formed by the front mold, while the second end face is formed by the rear mold. Due to the strong adhesion between the grating panel and the front mold, the grating panel tends to adhere to the front mold during mold opening, causing scratches and stretching deformation to easily occur on the outer surface of the grating panel when it is pulled out.

[0003] To prevent the grille panel from adhering to the front mold, some corresponding process structures are added in related technologies. The injection mold needs to add molding parts and ejection structures accordingly, which leads to higher injection mold costs. Utility Model Content

[0004] In view of this, the embodiments of this application aim to provide an injection molded part and an injection mold that can both improve the molding quality of the injection molded part and reduce the manufacturing cost of the injection mold.

[0005] To achieve the above objectives, one embodiment of this application provides an injection-molded component, comprising:

[0006] The support portion has a first end face and a second end face opposite each other along a first direction, and a side wall surface located between the first end face and the second end face, wherein a portion of the second end face is recessed to form a molding groove.

[0007] The main body portion forms an integral structure with the support portion, and the main body portion protrudes from the first end face in the first direction;

[0008] The injection molded component has a front mold forming surface and a rear mold forming surface. The front mold forming surface includes the outer surface of the main body and the first end face. The rear mold forming surface includes the groove wall surface of the molding groove, the second end face, and at least a portion of the side wall surface.

[0009] In one embodiment, the groove wall includes a first wall and two second walls, the first wall being located on the side of the forming groove close to the first end face along the first direction, and the two second walls being located on opposite sides of the first wall.

[0010] The two second walls are parallel to each other and both are parallel to the first direction;

[0011] And / or, the forming groove has a slot on the side opposite to the first wall surface along the first direction, and the distance between the first wall surface and the slot along the first direction is 1.2mm-1.3mm;

[0012] And / or, the first wall surface and the second wall surface are transitioned by a first circular arc;

[0013] And / or, the second wall surface and the second end face are transitioned by a second circular arc.

[0014] In one embodiment, on a projection plane perpendicular to the first direction, the projection of the forming groove at least partially overlaps with the projection of the main body.

[0015] And / or, the outer surface of the main body is in contact with the first end face, and a boundary line is formed at the point of contact, wherein the minimum distance between the boundary line and the wall surface of the forming groove is 1.5mm-1.9mm.

[0016] In one embodiment, the main body has a first length dimension along a second direction of the support portion and a second length dimension along a third direction of the support portion, the first length dimension being greater than the second length dimension, and the forming groove extending between opposite sides of the support portion along the second direction, wherein the second direction and the third direction are perpendicular to the first direction.

[0017] In one embodiment, the groove wall includes a first wall and two second walls. The first wall is located on the side of the forming groove close to the first end face along the first direction. The two second walls are located on opposite sides of the first wall along the third direction. The distance between the two second walls along the third direction is 1.3mm-1.5mm.

[0018] And / or, the forming groove extends through the support portion on opposite sides along the second direction.

[0019] In one embodiment, the number of main body portions is multiple, and the multiple main body portions are spaced apart along the third direction of the support portion.

[0020] In one embodiment, the number of the forming grooves is multiple, and the multiple forming grooves are spaced apart along the third direction.

[0021] In one embodiment, the plurality of main body portions include a first main body portion and a second main body portion alternately arranged along the third direction. The first main body portion corresponds one-to-one with the molding groove. On a projection plane perpendicular to the first direction, the projection of each molding groove overlaps at least partially with the projection of the corresponding first main body portion. The projection of the second main body portion is located between the projections of two adjacent molding grooves and is offset from the projections of two adjacent molding grooves.

[0022] In one embodiment, the injection-molded component is a grille panel.

[0023] Another embodiment of this application provides an injection mold for manufacturing the injection molded part described above, the injection mold comprising:

[0024] A front mold with a front mold core;

[0025] The rear mold includes a rear mold core and a core disposed on the rear mold core. The rear mold is detachably connected to the front mold to form a cavity for molding the injection molded part between the front mold core and the rear mold core. The core is located within the cavity. The front mold core is used to mold the front mold forming surface. The rear mold core is used to mold the second end face of the rear mold forming surface and at least a portion of the side wall surface. The core is used to mold the groove wall surface.

[0026] This application provides an injection molded component and an injection mold. The support portion of the injection molded component has a first end face and a second end face opposite each other along a first direction. The main body protrudes from the first end face in the first direction. A portion of the second end face of the support portion is recessed to form a molding groove. The outer surface of the main body and the first end face of the support portion constitute a front mold molding surface, which is formed by a front mold core. The groove wall, the second end face, and at least a portion of the side wall of the molding groove constitute a rear mold molding surface, which is formed by a rear mold core. The groove wall is formed by a core on the rear mold core. Since the recessed molding groove can increase the contact area between the support portion and the rear mold, it can enhance the adhesion between the injection molded component and the rear mold, allowing the injection molded component to adhere to the rear mold. This can fundamentally prevent scratches or stretching deformation of the front mold molding surface. Meanwhile, compared with the related technologies that set ribs on the support part, the molding groove in this embodiment can avoid both insufficient injection pressure leading to insufficient glue and excessive injection pressure leading to whitening during ejection. Furthermore, for the injection mold, only the core for forming the molding groove needs to be set on the corresponding rear mold core, making core processing simpler and less costly. Compared with the related technologies that use annular rings, the molding groove in this embodiment does not require an additional ejector pin assembly; ejection and demolding can be achieved using ordinary ejector pins, thus reducing the manufacturing cost of the injection mold. In summary, the injection molding component in this embodiment not only improves the molding quality of the injection molding component but also reduces the manufacturing cost of the injection mold. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an injection molded part and an injection mold according to an embodiment of this application;

[0028] Figure 2 for Figure 1 Cross-sectional view of the injection molded part and the injection mold;

[0029] Figure 3 for Figure 1 A schematic diagram of the demolding process for injection-molded parts;

[0030] Figure 4 for Figure 1 A cross-sectional view of the injection-molded component;

[0031] Figure 5 This is a schematic diagram of the structure of another injection-molded component according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10. Injection molded component; 10a. Front mold forming surface; 10b. Rear mold forming surface; 11. Support part; 11a. First end face; 11b. Second end face; 11c. Molding groove; 11c1. Groove wall surface; 11c11. First wall surface; 11c12. Second wall surface; 11c13. First arc; 11c14. Second arc; 11c2. Groove opening; 11d. Side wall surface; 12. Main body part; 121. First main body part; 122. Second main body part; 20. Injection mold; 20a. Cavity; 21. Front mold; 211. Front mold core; 22. Rear mold; 221. Rear mold core; 222. Core. Detailed Implementation

[0034] In the description of the embodiments in this application, it should be noted that the term "first direction" refers to the direction based on the attached... Figure 4 The indicated orientation or positional relationship, the terms "second direction" and "third direction" are based on the attached... Figure 5 The orientation or positional relationship shown is merely for the convenience of describing the embodiments of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0035] This application provides an injection mold 20 for manufacturing the injection molded part 10 provided in this application embodiment. Please refer to [link to relevant documentation]. Figures 1 to 3 The injection mold 20 includes a front mold 21 and a rear mold 22.

[0036] Please see Figures 1 to 5 The injection molded component 10 in this embodiment includes a support portion 11 and a main body portion 12.

[0037] Injection-molded component 10 includes, but is not limited to, structures such as grille panels. For example, Figure 5 The injection-molded component 10 shown is a grille panel. The main body 12 of the grille panel is used for air guidance, and the support part 11 is used to support the main body 12.

[0038] The support portion 11 has a first end face 11a and a second end face 11b opposite each other along a first direction, and a side wall surface 11d located between the first end face 11a and the second end face 11b. A portion of the second end face 11b is recessed to form a molding groove 11c. The main body portion 12 forms an integral structure with the support portion 11, and the main body portion 12 protrudes from the first end face 11a in the first direction. That is, the main body portion 12 and the support portion 11 are formed into an integral structure by injection molding, and during the molding process of the main body portion 12 and the support portion 11, the molding groove 11c is also formed simultaneously on the second end face 11b of the support portion 11.

[0039] Please continue reading. Figures 1 to 5The injection molded part 10 has a front mold forming surface 10a and a rear mold forming surface 10b. The front mold forming surface 10a includes the outer surface of the main body 12 and a first end face 11a. The rear mold forming surface 10b includes the groove wall surface 11c1 of the forming groove 11c, the second end face 11b, and at least a portion of the side wall surface 11d.

[0040] The front mold forming surface 10a refers to the surface formed by the front mold 21, and the rear mold forming surface 10b refers to the surface formed by the rear mold 22. That is, the outer surface of the main body 12 and the first end face 11a of the support part 11 are formed by the front mold 21, and the groove wall surface 11c1, the second end face 11b, and at least part of the side wall surface 11d of the forming groove 11c on the support part 11 are formed by the rear mold 22.

[0041] Please see Figure 2 and Figure 4 The front mold 21 includes a front mold core 211. The rear mold 22 includes a rear mold core 221 and a core 222 disposed in the rear mold core 221. The rear mold 22 is detachably connected to the front mold 21 so that a cavity 20a for molding the injection molded part 10 is formed between the front mold core 211 and the rear mold core 221. The core 222 is located in the cavity 20a. The front mold core 211 is used to mold the front mold forming surface 10a, the rear mold core 221 is used to mold the second end face 11b of the rear mold forming surface 10b and at least part of the side wall surface 11d, and the core 222 is used to mold the wall surface of the groove 11c.

[0042] In other words, the front mold core 211 and the rear mold core 221 together form the cavity 20a, and the core 222 protrudes from the cavity sidewall of the rear mold core 221.

[0043] During the mold opening process, the rear mold 22 moves away from the front mold 21 along the first direction.

[0044] More preferably, the injection mold 20 may further include ejector pins (not shown) disposed in the rear mold 22, which eject the injection part 10 that is adhered to the rear mold core 221, thereby realizing the demolding of the injection part 10.

[0045] Taking the injection molded part 10 as a grid panel as an example, the main body 12 needs to face outward for air guidance. Therefore, the first end face 11a of the main body 12 and the support 11 is the appearance surface of the injection molded part 10. In order to ensure the appearance quality of the appearance surface and the absence of ejector pin marks, the main material position of the injection molded part 10 needs to be designed to be formed in the front mold core 211 (the front mold 21 is kept fixed, the molding accuracy is higher, and it can be ensured that there are no ejector pin marks on the appearance surface). At the same time, in order to meet the geometric dimension requirements of the top (the end away from the support 11) and the root (the end connected to the support 11) of the main body 12, the draft angle of the main body 12 is usually small. This design causes the outer surface of the main body 12 to generate a large contact area and normal clamping force with the front mold core 211 after the injection molded part 10 cools and shrinks, causing the injection molded part 10 to adhere to the front mold 21 as a whole. Therefore, during the demolding process, the injection molded part 10 needs to be forcibly pulled out of the cavity of the front mold 21. This can easily cause the outer surface of the injection molded part 10 to rub violently against the front mold core 211, resulting in dragging and stress whitening. At the same time, uneven concentrated tension can also cause the injection molded part 10 to deform.

[0046] To solve this technical problem, the relevant technical solution is to provide a raised rib or annular structure on the second end face 11b (non-exterior surface) of the support part 11 to enhance the adhesion between the support part 11 and the rear mold core 221, thereby enabling the injection molded part 10 to overcome the adhesion with the front mold core 211 and remain on the rear mold 22. However, for the injection molded part 10 with raised ribs, since the raised ribs are thin and high protrusions, on the one hand, during the injection molding process of the raised ribs, in order to ensure that the melt can completely fill the end of the raised ribs and avoid insufficient glue, the injection pressure needs to be greatly increased, which leads to an increase in the clamping force with the rear mold 22 after cooling and solidification, resulting in ejection whitening and affecting the yield of the injection molded part 10. On the other hand, the forming of the raised ribs requires the use of special tools to process deep and narrow grooves on the rear mold 22, which not only makes the processing of the rear mold core 221 difficult, but also increases the mold production cost. For the injection molded part 10 with a ring body, in order to ensure smooth demolding of the ring body, an ejector pin assembly (i.e., ejector tube, hollow ejector pin) needs to be added to the rear mold 22 side. The ejector pin assembly extends into the ring body to eject the injection molded part 10, which will increase the cost of the injection mold 20.

[0047] In this embodiment, the support portion 11 of the injection-molded component 10 has a first end face 11a and a second end face 11b opposite each other along a first direction. The main body portion 12 protrudes from the first end face 11a in the first direction. A portion of the second end face 11b of the support portion 11 is recessed to form a molding groove 11c. The outer surface of the main body portion 12 and the first end face 11a of the support portion 11 constitute the front mold molding surface 10a, which is formed by the front mold core 211. The groove wall surface 11c1 and the second end face 11b of the molding groove 11c are... At least a portion of the sidewall surface 11d is formed by the rear mold forming surface 10b, the second end face 11b and at least a portion of the sidewall surface 11d are formed by the rear mold core 221, and the groove wall surface 11c1 is formed by the core 222 on the rear mold core 221. Since the recessed forming groove 11c can increase the contact area between the support portion 11 and the rear mold 22, the adhesion between the injection molded part 10 and the rear mold 22 can be enhanced, so that the injection molded part 10 can adhere to the rear mold 22, thereby avoiding scratches or stretching deformation of the front mold forming surface 10a from the source. Meanwhile, compared with the related technologies that provide ribs on the support part 11, the molding groove 11c in this embodiment of the application can, on the one hand, avoid the problem of insufficient injection pressure leading to missing glue, and on the other hand, avoid the problem of excessive injection pressure leading to whitening during ejection. Furthermore, for the injection mold 20, only the core 222 for molding the molding groove 11c needs to be provided on the corresponding rear mold core 221. The processing of the core 222 is relatively simple and the processing cost is low. Compared with the related technologies that provide an annular body, the molding groove 11c in this embodiment of the application does not require an additional ejector pin assembly; ejection and demolding can be achieved using ordinary ejector pins, thus reducing the manufacturing cost of the injection mold 20. In summary, the injection molding component 10 in this embodiment of the application can not only improve the molding quality of the injection molding component 10, but also reduce the manufacturing cost of the injection mold 20.

[0048] In some embodiments, please refer to Figures 2 to 4 On the projection plane perpendicular to the first direction, the projection of the molding groove 11c can at least partially overlap with the projection of the main body 12. In this way, the clamping force between 11c1 and the core 222 and the clamping force between the main body 12 and the front mold core 211 counterbalance each other, so that the overall force direction of the injection molded part 10 is more balanced, thereby preventing the injection molded part 10 from shifting due to unbalanced force when the injection mold 20 opens.

[0049] Preferably, the projection of the molding groove 11c can be located inside the projection of the main body 12, so as to further prevent the injection molded part 10 from shifting when the injection mold 20 is opened, and at the same time, it can also ensure that the injection molded part 10 has good structural strength.

[0050] In some embodiments, please refer to Figure 4The groove wall 11c1 includes a first wall 11c11 and two second walls 11c12. The first wall 11c11 is located on the side of the forming groove 11c close to the first end face 11a along the first direction. The two second walls 11c12 are located on opposite sides of the first wall 11c11.

[0051] Please continue reading. Figure 4 The two second walls 11c12 can be parallel to each other and both are parallel to the first direction. That is, in the first direction, from the side closer to the first wall 11c11 to the side farther away from the first wall 11c11, the distance between the two second walls 11c12 along the third direction remains unchanged. When the injection molded part 10 is demolded along the first direction under the action of the ejector pin, the friction between the groove wall 11c1 and the core 222 can be reduced, avoiding the problem of glue powder generated by the groove wall 11c1 due to friction. At the same time, since the core 222 surfaces corresponding to the two second walls 11c12 on the core 222 are also parallel to each other and both are parallel to the first direction, the core 222 can be processed with ordinary cutting tools without the need to customize special cutting tools, thereby reducing the production cost of the injection mold 20.

[0052] In other embodiments, in the first direction, from the side closer to the first wall 11c11 to the side farther from the first wall 11c11, the two second walls 11c12 may also be inclined toward each other.

[0053] For example, please refer to Figure 4 The forming groove 11c has a groove 11c2 on the side away from the first wall 11c11 along the first direction. The distance H1 between the first wall 11c11 and the groove 11c2 along the first direction can be 1.2mm-1.3mm.

[0054] The groove 11c2 refers to the opening that connects the molding groove 11c to the outside. In other words, the distance between the first wall surface 11c11 and the second end surface 11b along the first direction is 1.2mm-1.3mm. This can both prevent the molding groove 11c from being too deep and affecting the structural strength of the injection molded part 10, and ensure that the groove wall surface 11c1 has a large surface area so that there is a large clamping force between the groove wall surface 11c1 and the core 222.

[0055] For example, please refer to Figure 4 The first wall surface 11c11 and the second wall surface 11c12 can be transitioned by the first arc 11c13. That is to say, the first wall surface 11c11 and the second wall surface 11c12 are transitioned by an arc surface, which can satisfy the requirement of a large clamping force between the groove wall surface 11c1 and the core 222, and reduce the problem of glue powder appearing in the injection molded part 10 during ejection and demolding.

[0056] For example, please refer to Figure 4 The second wall surface 11c12 and the second end surface 11b are connected by a second arc 11c14. That is, the second wall surface 11c12 and the second end surface 11b are connected by an arc surface, which can satisfy the requirement of a large clamping force between the groove wall surface 11c1 and the core 222, and reduce the problem of glue powder appearing in the injection molded part 10 during ejection and demolding.

[0057] The radii of the first arc 11c13 and the second arc 11c14 are not limited, but more preferably, the radii of the first arc 11c13 and the second arc 11c14 can be 0.3mm.

[0058] In some embodiments, please refer to Figure 4 The outer surface of the main body 12 is in contact with the first end face 11a, and a boundary line is formed at the point of contact. The minimum distance H2 between the boundary line and the groove wall 11c1 of the forming groove 11c can be 1.5mm-1.9mm.

[0059] The minimum spacing H2 refers to the shortest straight distance between the boundary line and the groove wall 11c1. That is, the shortest straight distance between the boundary line and the groove wall 11c1 of the molding groove 11c is not less than 1.5mm and not more than 1.9mm. This ensures that the injection molded part 10 has good structural strength while maximizing the surface area of ​​the groove wall 11c1 of the molding groove 11c, so that the molding groove 11c and the rear mold 22 have a larger clamping force.

[0060] It is understandable that the minimum distance H2 between the boundary line and the groove wall 11c1 of the forming groove 11c can be 1.5mm, 1.9mm, or any value between 1.5mm and 1.9mm.

[0061] In some embodiments, please refer to Figure 5 The main body 12 has a first length dimension H4 along the second direction of the support portion 11 and a second length dimension H5 along the third direction of the support portion 11. The first length dimension H4 is greater than the second length dimension H5. The molding groove 11c can extend between opposite sides of the support portion 11 along the second direction to increase the clamping force between the groove wall surface 11c1 and the core 222 by increasing the surface area of ​​the groove wall surface 11c1. The second direction and the third direction are perpendicular to the first direction.

[0062] It is understood that the molding groove 11c extending between the opposite sides of the support portion 11 along the second direction means that the molding groove 11c can extend along a straight line on the support portion 11, or it can extend along a curve, or it can be any other extension form.

[0063] In the embodiment where the injection-molded part 10 is a grille panel, the main body 12 can extend between the opposite sides of the support 11 along the second direction to improve the air guiding effect of the main body 12; that is, the main body 12 can be elongated.

[0064] More preferably, please refer to Figure 1 and Figure 5 The molding groove 11c can penetrate the support part 11 along the opposite sides in the second direction, so that the molding groove 11c can be easily demolded.

[0065] For example, please refer to Figure 4 The molding groove 11c includes a first wall surface 11c11 and two second walls surface 11c12. The first wall surface 11c11 is located on the side of the molding groove 11c along the first direction close to the first end face 11a. The two second walls surface 11c12 are located on opposite sides of the first wall surface 11c11 along the third direction. The distance H3 between the two second walls surface 11c12 along the third direction can be 1.3mm-1.5mm to avoid the problem of thin steel on the core 222 on the rear mold core 221. At the same time, it can also avoid the distance H3 between the two second walls surface 11c12 along the third direction being too large and affecting the structural strength of the injection molded part 10.

[0066] It is understandable that the distance H3 between the two second walls 11c12 along the third direction can be 1.3mm, 1.5mm, or any value between 1.3mm and 1.5mm.

[0067] For example, please refer to Figure 5 The number of main body parts 12 is multiple, and the multiple main body parts 12 can be arranged at intervals along a third direction of the support part 11. In the embodiment where the injection molded part 10 is a grille panel, the air guiding effect can be improved by providing multiple main body parts 12.

[0068] Please continue reading. Figure 5 The number of forming grooves 11c can also be multiple. Multiple forming grooves 11c are spaced apart along the third direction to further increase the contact area between the support part 11 and the rear mold 22, thereby increasing the clamping force with the rear mold 22.

[0069] Please continue reading. Figure 5 The plurality of main body parts 12 include a first main body part 121 and a second main body part 122 alternately arranged along a third direction. The first main body part 121 corresponds one-to-one with the molding groove 11c. On the projection plane perpendicular to the first direction, the projection of each molding groove 11c can at least partially overlap with the projection of the corresponding first main body part 121. The projection of the second main body part 122 is located between the projections of two adjacent molding grooves 11c and is offset from the projections of two adjacent molding grooves 11c.

[0070] In other words, in the third direction, a molding groove 11c is provided for every other main body part 12. This ensures that the injection molded part 10 can adhere to the rear mold 22, while also ensuring that the injection molded part 10 has good structural strength, simplifying the structure of the injection mold 20, and improving the processing efficiency of the injection mold 20.

[0071] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. An injection molded part characterized by, The injection molded part comprises: a support part having opposite first and second end faces along a first direction, and a side wall face between the first and second end faces, a partial region of the second end face being recessed to form a shaped groove; a main body part integrally formed with the support part, the main body part being convex to the first end face in the first direction; wherein the injection molded part has a front mold shaped face and a back mold shaped face, the front mold shaped face comprising an outer surface of the main body part and the first end face, and the back mold shaped face comprising a groove wall face of the shaped groove, the second end face, and at least part of the side wall face.

2. The injection molded part of claim 1, wherein, the groove wall face comprises a first wall face located on a side of the shaped groove close to the first end face along the first direction, and two second wall faces respectively located on opposite sides of the first wall face; the two second wall faces are parallel to each other and parallel to the first direction; and / or, the shaped groove has a groove opening on a side of the shaped groove away from the first wall face along the first direction, a distance between the first wall face and the groove opening along the first direction being 1.2 mm-1.3 mm; and / or, the first wall face and the second wall face are connected by a first circular arc; and / or, the second wall face and the second end face are connected by a second circular arc.

3. Injection-molded part according to claim 1 or 2, characterized in that a projection of the shaped groove on a projection plane perpendicular to the first direction at least partially overlaps a projection of the main body part; and / or, an outer surface of the main body part and the first end face meet, and an interface line is formed at the meeting position, a minimum distance between the interface line and the groove wall face of the shaped groove being 1.5 mm-1.9 mm.

4. Injection-molded part according to claim 1 or 2, characterized in that the main body part has a first length dimension along a second direction of the support part and a second length dimension along a third direction of the support part, the first length dimension being greater than the second length dimension, and the shaped groove extends between opposite sides of the support part along the second direction, wherein the second direction and the third direction are perpendicular to the first direction.

5. The injection molded part of claim 4, wherein, the groove wall face comprises a first wall face located on a side of the shaped groove close to the first end face along the first direction, and two second wall faces respectively located on opposite sides of the first wall face along the third direction, and a distance between the two second wall faces along the third direction being 1.3 mm-1.5 mm; and / or, the shaped groove extends through opposite sides of the support part along the second direction.

6. The injection molded part of claim 4, wherein, the number of the main body parts is plural, and the plural main body parts are arranged at intervals along the third direction of the support part.

7. The injection molded part of claim 6, wherein, the number of the shaped grooves is plural, and the plural shaped grooves are arranged at intervals along the third direction.

8. The injection molded part of claim 7, wherein, The plurality of body portions include first body portions and second body portions alternately arranged along the third direction, the first body portions correspond to the forming grooves one by one, projections of each of the forming grooves and the corresponding first body portion at least partially overlap on a projection plane perpendicular to the first direction, and projections of the second body portions are located between projections of two adjacent forming grooves and staggered with the projections of the two adjacent forming grooves.

9. The injection molded part of claim 6, wherein, The injection molded part is a grating panel.

10. An injection mold for manufacturing an injection molded part according to any one of claims 1 to 9, characterized in that The injection mold includes: a front mold having a front mold core; a back mold including a back mold core and a core arranged in the back mold core, the back mold being separably connected with the front mold to form a cavity for forming the injection molded part between the front mold core and the back mold core, the core being located in the cavity, wherein the front mold core is used for forming the front mold forming surface, the back mold core is used for forming the second end surface of the back mold forming surface and at least part of the side wall surface, and the core is used for forming the groove wall surface.

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