An injection mold for producing automobile interior parts

Abstract

The present invention discloses an injection mold for producing automobile interior decoration parts, comprising an upper mold group, an injection molding component, a core pulling unit, a guide unit, a lower mold group and an injection cavity; the upper mold group and the lower mold group are arranged relative to each other, and the injection cavity is formed by the cooperation of the upper mold group and the lower mold group; the guide unit is arranged between the upper mold group and the lower mold group, and is used for guiding mold opening and closing; the injection molding component is arranged in the lower mold group, the feed end of the injection molding component is located on the lower surface of the lower mold group, and the discharge end of the injection molding component is connected with the injection cavity; the core pulling unit is arranged on one side of the upper mold group, the output end of the core pulling unit is connected with the injection cavity, and the core pulling action direction of the core pulling unit is perpendicular to the mold opening and closing direction; the present application aims to provide an injection mold for producing automobile interior decoration parts, which can reduce the mold volume and reduce the mold production cost.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to an injection mold for producing automobile interior decoration parts. Background Art

[0002] After the injection mold is used to mold the automotive interior parts, the side walls of the automotive interior parts generally include one or more of convex rings, grooves or through holes. The existing processing method generally uses a side core-pulling slider to pull the core. Since the automotive interior parts have a large clamping force on the side core-pulling slider after injection molding, the use of a cylinder to directly drive the pull-out method can easily cause the automotive interior parts to deform or even break. At the same time, the cylinder requires a certain amount of installation controls and drive stroke, which increases the size of the mold, increases the mold cost, and increases the mold's requirements for the site of use. Summary of the invention

[0003] The purpose of the present invention is to provide an injection mold for producing automobile interior decoration parts, which can reduce the mold volume and reduce the mold production cost.

[0004] To achieve this object, the present invention adopts the following technical scheme: an injection mold for producing automotive interior parts, comprising an upper mold group, an injection molding component, a core pulling unit, a guide unit, a lower mold group and an injection cavity; the upper mold group and the lower mold group are arranged opposite to each other, and the injection cavity is formed by the cooperation of the upper mold group and the lower mold group; the guide unit is arranged between the upper mold group and the lower mold group for guiding the opening and closing of the mold; the injection molding component is arranged in the lower mold group, the feed end of the injection molding component is located on the lower surface of the lower mold group, and the discharge end of the injection molding component is connected to the injection cavity; the core pulling unit is arranged on one side of the upper mold group, the output end of the core pulling unit is connected to the injection cavity, and the core pulling action direction of the core pulling unit is perpendicular to the opening and closing direction of the mold.

[0005] Preferably, the upper mold assembly is provided with a clearance hole; the core pulling unit includes a pushing cylinder, a guide mechanism, a linkage mechanism, a core and an in-place detection mechanism; the pushing cylinder, the guide mechanism and the in-place detection mechanism are all arranged on the side wall of the upper mold assembly; the output end of the pushing cylinder is connected to one end of the guide mechanism, and the other end of the guide mechanism is opposite to the in-place detection mechanism; the linkage mechanism is arranged in the clearance hole; one end of the linkage mechanism is connected to the side wall of the guide mechanism, and the other end of the linkage mechanism is connected to one end of the core, and the other end of the core extends into the injection cavity.

[0006] Preferably, the guide mechanism includes a fixed sleeve, a guide groove, a guide slide rod and a guide connecting groove; the fixed sleeve is provided in plurality, the guide groove is provided on the inner wall of each of the fixed sleeves, the guide slide rod slides through the guide groove, and the guide connecting groove is provided at one end of the guide slide rod; a limiting convex ring is provided at the output end of the pushing cylinder, and the inner contour of the guide connecting groove is adapted to the outer contour of the limiting convex ring.

[0007] Preferably, there are multiple clearance holes; there are multiple groups of linkage mechanisms, one end of each group of linkage mechanisms is connected to the guide mechanism, and the other end of each group of linkage mechanisms extends to the corresponding clearance holes; one end of each group of linkage mechanisms located in the clearance hole is connected to the core.

[0008] Preferably, the linkage mechanism includes a diagonal support slider, a limiting slide rail, a linkage block, a linkage connecting groove and a core connecting groove; one end of the diagonal support slider is connected to the guide slide rod, and the limiting slide rail is arranged at the other end of the diagonal support slider; the linkage connecting groove is arranged at one end of the linkage block, and the linkage connecting groove cooperates with the limiting slide rail to realize the linkage between the diagonal support slider and the linkage block; the core connecting groove is arranged at the other end of the linkage block, and one end of the core is arranged in the core connecting groove.

[0009] Preferably, the diagonal support slider includes a first inclined surface, and the linkage block includes a second inclined surface; the first inclined surface is arranged on the side of the diagonal support slider opposite to the linkage block, and the second inclined surface is arranged in the linkage connecting groove; the first inclined surface and the second inclined surface are parallel, and the angle between the first inclined surface and the guide slide rod is an acute angle.

[0010] Preferably, the in-place detection mechanism includes a detection trigger seat, a first in-place detection switch and a second in-place detection switch; the first in-place detection switch and the second in-place detection switch are arranged side by side on the side wall of the upper mold group in a horizontal direction, the first in-place detection switch and the second in-place detection switch are both arranged on one side of the guide mechanism, one end of the detection trigger seat is connected to the guide mechanism, and the other end of the detection trigger seat is opposite to the detection end of the first in-place detection switch or the detection end of the second in-place detection switch.

[0011] Preferably, the lower mold assembly is provided with a top plate guide groove; the injection mold also includes a top plate unit, and the top plate unit includes a lifting cylinder, a top plate and an ejector pin; the lifting cylinder is arranged on the side wall of the lower mold assembly, the top plate is arranged in the top plate guide groove, the output end of the lifting cylinder is connected to the top plate, and a plurality of ejectors are provided, and the plurality of ejectors are distributed on the upper surface of the top plate, and the upper ends of the plurality of ejectors are connected to the injection cavity.

[0012] Preferably, a balancing block is arranged between the upper mold assembly and the lower mold assembly, and a plurality of the balancing blocks are arranged, and the plurality of the balancing blocks are distributed around the periphery of the injection cavity.

[0013] Preferably, it also includes an upper mold pipeline and a lower mold pipeline; the upper mold pipeline is arranged in the upper mold group, and the lower mold pipeline is arranged in the lower mold group.

[0014] The present application adopts the above structure, and the upper mold group, the guide unit and the lower mold group are matched, and the upper mold group and the lower mold group are connected to the driving device to complete the mold opening and closing actions. The guide unit plays a good guiding role to prevent the displacement between the modules during the mold opening and closing process, which affects the molding of the mold and avoids the collision and damage of the core and the cavity. The injection molding component adopts a bottom-up injection molding method. During the injection molding process, the material can fully fill the injection cavity, making the mold molding more stable. The core pulling action direction of the core pulling unit of the present application is perpendicular to the mold opening and closing direction, and the moving process is stable, which can reduce the volume of the mold, miniaturize the mold as a whole, and reduce the mold cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is one of the partial structural schematic diagrams of the core pulling unit of the present invention;

[0018] Figure 3 It is a schematic diagram of the top view of the structure of removing the upper die base of the present invention;

[0019] Figure 4 This is the second partial structural schematic diagram of the core pulling unit of the present invention;

[0020] Figure 5 It is a cross-sectional schematic diagram of the present invention along the width direction of the mold;

[0021] Figure 6 It is a structural schematic diagram of the top plate unit of the present invention.

[0022] Among them: upper die set 1, clearance hole 1a;

[0023] Injection molding component 2, core pulling unit 3;

[0024] Pushing cylinder 31, guide mechanism 32, fixing sleeve 321, guide slide rod 322, guide connecting groove 323;

[0025] Linkage mechanism 33, diagonal support slider 331, limit slide rail 332, linkage block 333, linkage connection groove 334, core connection groove 335;

[0026] Core 34, in-place detection mechanism 35, detection trigger seat 351, first in-place detection switch 352, second in-place detection switch 353;

[0027] Guide unit 4, lower mold assembly 5, injection cavity 6;

[0028] Ejector unit 7, jacking cylinder 71, ejector plate 72, ejector pin 73;

[0029] Balance block 8, upper mold pipeline 9, lower mold pipeline 10. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0033] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] See also Figures 1 to 6As shown, an injection mold for producing automobile interior decoration parts includes an upper mold group 1, an injection molding component 2, a core pulling unit 3, a guide unit 4, a lower mold group 5 and an injection molding cavity 6.

[0036] The upper mold assembly 1 and the lower mold assembly 5 are arranged opposite to each other, and the injection cavity 6 is formed by the cooperation of the upper mold assembly 1 and the lower mold assembly 5 .

[0037] The guide unit 4 is disposed between the upper die set 1 and the lower die set and is used for guiding the opening and closing of the mold.

[0038] The injection molding component 2 is arranged on the lower mold assembly 5 , a feed end of the injection molding component 2 is located on the lower surface of the lower mold assembly 5 , and a discharge end of the injection molding component 2 is communicated with the injection molding cavity 6 .

[0039] The core pulling unit 3 is arranged on one side of the upper mold assembly 1 , the output end of the core pulling unit 3 is connected to the injection cavity 6 , and the core pulling action direction of the core pulling unit 3 is perpendicular to the mold opening and closing direction.

[0040] By adopting this structure, the upper mold group 1, the guide unit 4 and the lower mold group 5 are matched, and the upper mold group 1 and the lower mold group 5 are connected to the driving device to complete the mold opening and closing actions. The guide unit 4 plays a good guiding role to prevent the displacement between the mold groups during the mold opening and closing process, which affects the molding of the mold and avoids the collision and damage of the core and the cavity. The injection molding component 2 adopts a bottom-up injection molding method. During the injection molding process, the material can fully fill the injection cavity 6, making the mold molding more stable. The core pulling action direction of the core pulling unit 3 of the present application is perpendicular to the mold opening and closing direction, and the moving process is stable, which can reduce the volume of the mold, miniaturize the mold as a whole, and reduce the mold cost.

[0041] In this embodiment, the upper mold assembly 1 is provided with a clearance hole 1a.

[0042] The core pulling unit 3 includes a pushing cylinder 31 , a guide mechanism 32 , a linkage mechanism 33 , a core 34 and an in-place detection mechanism 35 .

[0043] The pushing cylinder 31 , the guiding mechanism 32 and the in-position detection mechanism 35 are all arranged on the side wall of the upper die assembly 1 .

[0044] The output end of the pushing oil cylinder 31 is connected to one end of the guide mechanism 32 , and the other end of the guide mechanism 32 is opposite to the in-position detection mechanism 35 .

[0045] The linkage mechanism 33 is arranged in the clearance hole 1a; one end of the linkage mechanism 33 is connected to the side wall of the guide mechanism 32, and the other end of the linkage mechanism 33 is connected to one end of the core 34, and the other end of the core 34 extends into the injection cavity 6.

[0046] With this structure, the pushing cylinder 31 is connected to the guide mechanism 32, and the output end of the pushing cylinder 31 drives the guide mechanism 32 to move, and at the same time drives the core 34 to move through the linkage mechanism 33. Through the cooperation of the guide mechanism 32 and the linkage mechanism 33, the output of the pushing cylinder 31 along the length direction of the mold is converted into the movement of the core 34 along the width direction of the mold, thereby completing the core pulling work of the mold. This structure can reduce the volume of the core pulling unit 3, reduce the overall material consumption of the mold, and reduce costs.

[0047] Specifically, the guide mechanism 32 includes a fixing sleeve 321 , a guide groove, a guide sliding rod 322 and a guide connecting groove 323 .

[0048] The fixing sleeves 321 are provided in plurality, the guide grooves are provided on the inner walls of the fixing sleeves 321 , the guide slide rods 322 are slidably inserted into the guide grooves, and the guide connection grooves 323 are provided at one end of the guide slide rods 322 .

[0049] A limiting convex ring is disposed at the output end of the pushing oil cylinder 31 , and the inner contour of the guiding connection groove 323 is adapted to the outer contour of the limiting convex ring.

[0050] With this structure, multiple fixing sleeves 321 are provided, which facilitates the removal of the fixing sleeves 321 and the replacement or maintenance of the corresponding linkage mechanism 33 or the core 34. Multiple guide grooves are matched to form an integral slide groove, and the guide slide rod 322 moves in the slide groove, which plays a good positioning and limiting role. The structure of the limiting convex ring and the guide connection groove 323 is convenient for connection, and also convenient for pushing the oil cylinder 31 to push or pull back the guide slide rod 322.

[0051] Preferably, a plurality of the evacuation holes 1a are provided.

[0052] The linkage mechanisms 33 are provided in multiple groups, one end of each group of the linkage mechanisms 33 is connected to the guide mechanism 32, and the other end of each group of the linkage mechanisms 33 extends into the corresponding clearance hole 1a.

[0053] One end of each group of the linkage mechanisms 33 located in the clearance hole 1 a is connected to the core 34 .

[0054] Meanwhile, the linkage mechanism 33 includes a diagonal support slider 331 , a limit slide rail 332 , a linkage block 333 , a linkage connection groove 334 and a core connection groove 335 .

[0055] One end of the diagonal support slider 331 is connected to the guide slide rod 322 , and the limiting slide rail 332 is disposed at the other end of the diagonal support slider 331 .

[0056] The linkage connection groove 334 is disposed at one end of the linkage block 333 , and the linkage connection groove 334 cooperates with the limiting slide rail 332 to realize the linkage of the diagonal support slider 331 and the linkage block 333 .

[0057] The core connection groove 335 is disposed at the other end of the linkage block 333 , and one end of the core 34 is disposed in the core connection groove 335 .

[0058] With this structure, through the cooperation between the diagonal support slider 331 and the linkage block 333, when the guide slide rod 322 drives the diagonal support slider 331 to move, the limiting slide rail 332 cooperates with the linkage connecting groove 334 to drive the linkage block 333 to move along the direction of the clearance hole 1a, thereby driving the core 34 to be pulled out or inserted into the injection cavity 6.

[0059] The guide slide rod 322 simultaneously drives multiple linkage mechanisms 33 to move, thereby improving the efficiency of core pulling. At the same time, the independent linkage mechanisms 33 can adapt to the core pulling work of various molds, reducing the volume of the mold and effectively reducing the cost of the mold.

[0060] In the present application, the diagonal support slider 331 includes a first inclined surface, and the linkage block 333 includes a second inclined surface.

[0061] The first inclined surface is disposed on a side of the diagonal support slider 331 opposite to the linkage block 333 , and the second inclined surface is disposed in the linkage connection groove 334 .

[0062] The first inclined surface is parallel to the second inclined surface, and the angle between the first inclined surface and the guide slide rod 322 is an acute angle.

[0063] With this structure, the first inclined surface and the second inclined surface cooperate to increase the contact area between the diagonal support slider 331 and the linkage block 333, thereby improving the linkage strength between the diagonal support slider 331 and the linkage block 333. According to the specifications of the actual production mold, the angle between the first inclined surface and the guide slide rod 322 is set to adjust the stroke of the guide slide rod 322 and the stroke of the core 34.

[0064] Meanwhile, the in-position detection mechanism 35 includes a detection trigger seat 351 , a first in-position detection switch 352 and a second in-position detection switch 353 .

[0065] The first in-place detection switch 352 and the second in-place detection switch 353 are arranged side by side on the side wall of the upper mold assembly 1 in the horizontal direction, and the first in-place detection switch 352 and the second in-place detection switch 353 are both arranged on one side of the guide mechanism 32, one end of the detection trigger seat 351 is connected to the guide mechanism 32, and the other end of the detection trigger seat 351 is opposite to the detection end of the first in-place detection switch 352 or the detection end of the second in-place detection switch 353.

[0066] With this structure, the first in-place detection switch 352 and the second in-place detection switch 353 are arranged side by side. When the guide slide rod 322 moves, the detection trigger seat 351 is driven to move. When the detection trigger seat 351 contacts the first in-place detection switch 352, the guide slide rod 322 and the core 34 move to the corresponding first limit position respectively. When the detection trigger seat 351 contacts the second in-place detection switch 353, the guide slide rod 322 and the core 34 move to the corresponding second limit position respectively. The in-place detection mechanism 35 plays the role of safety limit, preventing the guide slide rod 322 or the core 34 from moving too far and causing damage to the mold.

[0067] Specifically, the lower die set 5 is provided with a top plate guide groove.

[0068] The injection mold further includes an ejector unit 7 , which includes an ejector cylinder 71 , an ejector plate 72 and an ejector pin 73 .

[0069] The lifting cylinder 71 is arranged on the side wall of the lower mold 5, the top plate 72 is arranged in the top plate guide groove, the output end of the lifting cylinder 71 is connected to the top plate 72, and a plurality of ejector pins 73 are provided, and the plurality of ejector pins 73 are distributed on the upper surface of the top plate 72, and the upper ends of the plurality of ejector pins 73 are connected to the injection cavity 6.

[0070] With this structure, the lifting cylinder 71 drives the top plate 72 to move toward the upper mold assembly 1, and the ejector pin 73 moves upward to complete the demoulding of the mold. The moving process is stable, and multiple ejector pins 73 cooperate to increase the contact points with the mold, which facilitates the demoulding of the mold.

[0071] Preferably, a balancing block 8 is provided between the upper mold assembly 1 and the lower mold assembly 5 , and a plurality of balancing blocks 8 are provided, and the plurality of balancing blocks 8 are distributed around the periphery of the injection cavity 6 .

[0072] A plurality of balancing blocks 8 are provided to share the lateral pressure of the injection cavity 6 to prevent damage to the mold during the mold opening and closing process.

[0073] Preferably, an upper mold pipeline 9 and a lower mold pipeline 10 are also included.

[0074] The upper mold pipeline 9 is disposed in the upper mold assembly 1 , and the lower mold pipeline 10 is disposed in the lower mold assembly 5 .

[0075] The upper mold pipeline 9 cools down the upper mold assembly 1, and the lower mold pipeline 10 prevents the material in the injection molding assembly 2 from cooling and solidifying.

[0076] In the description of this specification, the description with reference to the terms "embodiment", "example", 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 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.

[0077] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. An injection mold for producing automotive interior parts, characterized in that: It includes an upper mold assembly, an injection molding component, a core pulling unit, a guide unit, a lower mold assembly and an injection molding cavity; The upper mold assembly and the lower mold assembly are arranged opposite to each other, and the injection cavity is formed by the cooperation of the upper mold assembly and the lower mold assembly; The guide unit is arranged between the upper die set and the lower die set, and is used for guiding the opening and closing of the die; The injection molding component is arranged on the lower mold assembly, the feed end of the injection molding component is located on the lower surface of the lower mold assembly, and the discharge end of the injection molding component is communicated with the injection molding cavity; The core pulling unit is arranged on one side of the upper mold assembly, the output end of the core pulling unit is connected to the injection cavity, and the core pulling action direction of the core pulling unit is perpendicular to the mold opening and closing direction; The upper die set is provided with a clearance hole; The core pulling unit includes a driving cylinder, a guide mechanism, a linkage mechanism, a core and an in-place detection mechanism; The pushing cylinder, the guiding mechanism and the in-position detection mechanism are all arranged on the side wall of the upper die set; The output end of the pushing oil cylinder is connected to one end of the guide mechanism, and the other end of the guide mechanism is opposite to the in-position detection mechanism; The linkage mechanism is arranged in the clearance hole; one end of the linkage mechanism is connected to the side wall of the guide mechanism, the other end of the linkage mechanism is connected to one end of the core, and the other end of the core extends into the injection cavity; The guide mechanism comprises a fixing sleeve, a guide groove, a guide slide rod and a guide connecting groove; There are multiple fixing sleeves, the guide grooves are arranged on the inner wall of each fixing sleeve, the guide slide rod is slidably arranged in the guide grooves, and the guide connection groove is arranged at one end of the guide slide rod; A limiting convex ring is provided at the output end of the pushing oil cylinder, and the inner contour of the guide connecting groove is adapted to the outer contour of the limiting convex ring; The linkage mechanism comprises a diagonal support slider, a limit slide rail, a linkage block, a linkage connection groove and a core connection groove; One end of the diagonal support slider is connected to the guide slide rod, and the limiting slide rail is arranged at the other end of the diagonal support slider; The linkage connection groove is arranged at one end of the linkage block, and the linkage connection groove cooperates with the limit slide rail to realize the linkage between the diagonal support slider and the linkage block; The core connecting groove is arranged at the other end of the linkage block, and one end of the core is arranged in the core connecting groove; The diagonal support slider includes a first inclined surface, and the linkage block includes a second inclined surface; The first inclined surface is arranged on a side of the diagonal support slider opposite to the linkage block, and the second inclined surface is arranged in the linkage connection groove; The first inclined plane and the second inclined plane are parallel, and the angle between the first inclined plane and the guide sliding rod is an acute angle; The lower die set is provided with a top plate guide groove; The injection mold further comprises a top plate unit, wherein the top plate unit comprises a lifting cylinder, a top plate and an ejector pin; The lifting cylinder is arranged on the side wall of the lower mold assembly, the top plate is arranged in the top plate guide groove, the output end of the lifting cylinder is connected to the top plate, a plurality of ejectors are arranged, the plurality of ejectors are distributed on the upper surface of the top plate, and the upper ends of the plurality of ejectors are connected to the injection cavity.

2. The injection mold for producing automotive interior parts according to claim 1, characterized in that: The said giving way holes are provided in plurality; The linkage mechanism is provided with multiple groups, one end of each group of the linkage mechanism is connected to the guide mechanism, and the other end of each group of the linkage mechanism extends into the corresponding yield hole; One end of each group of linkage mechanisms located in the clearance hole is connected to the core.

3. The injection mold for producing automotive interior parts according to claim 1, characterized in that: The in-place detection mechanism comprises a detection trigger seat, a first in-place detection switch and a second in-place detection switch; The first in-place detection switch and the second in-place detection switch are arranged side by side in the horizontal direction on the side wall of the upper mold assembly, and the first in-place detection switch and the second in-place detection switch are both arranged on one side of the guide mechanism, one end of the detection trigger seat is connected to the guide mechanism, and the other end of the detection trigger seat is opposite to the detection end of the first in-place detection switch or the detection end of the second in-place detection switch.

4. The injection mold for producing automotive interior parts according to claim 1, characterized in that: A balancing block is arranged between the upper die set and the lower die set, and a plurality of the balancing blocks are arranged, and the plurality of the balancing blocks are distributed around the periphery of the injection cavity.

5. The injection mold for producing automobile interior decoration parts according to claim 1, characterized in that: It also includes upper die piping and lower die piping; The upper mold pipeline is arranged in the upper mold assembly, and the lower mold pipeline is arranged in the lower mold assembly.

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