Automobile plastic part injection mold with convenient demolding

Abstract

This utility model discloses an injection mold for automotive plastic parts that facilitates demolding. It includes a base plate, an ejector plate on the upper surface of the base plate, a moving mold on the upper surface of the ejector plate, a fixed mold on the upper surface of the moving mold, a runner plate on the upper surface of the fixed mold, a panel on the upper surface of the runner plate, and slots at the four corners of the upper surface of the moving mold, each slot containing a positioning pin. This utility model achieves initial positioning by having the positioning pins in the slots of the moving mold engage with guide grooves on the surface of the fixed mold. Subsequently, the inserts in the placement slots on both sides of the fixed mold engage with the positioning slots. Then, the symmetrically arranged inserts on the surface of the moving mold engage with the symmetrically opened slots on the upper surface of the fixed mold. Simultaneously, one side of the engaging block in the mounting groove on the inner wall of the positioning slot, opposite to the two surfaces of the two inserts, abuts against the opposite surfaces of the inserts. Because the engaging blocks are made of special steel, they possess high hardness and wear resistance, enabling them to withstand significant pressure and friction.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and in particular relates to an injection mold for automotive plastic parts that is easy to demold. Background Technology

[0002] Molds are tools used to process and shape products, enabling mass production by giving plastics specific shapes and precise dimensions. They are widely used in the automotive, home appliance, and electronics industries. Their core structure includes a moving mold, a fixed mold, and systems for gating, temperature control, and ejection. Molding processes are classified into six categories: injection molding, compression molding, extrusion, blow molding, vacuum forming, and high-density polystyrene molding.

[0003] Existing molds suffer from inaccurate positioning during operation, leading to difficulties in guaranteeing the dimensional accuracy of the finished products. This results in deviations and errors, affecting product quality and performance. Furthermore, inaccurate positioning shortens the mold's lifespan; frequent misalignment and friction accelerate wear on mold components, increasing maintenance costs and replacement frequency. Therefore, this paper proposes a convenient demolding injection mold for automotive plastic parts. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold for automotive plastic parts that facilitates demolding, thereby solving existing problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an injection mold for automotive plastic parts that facilitates demolding. It includes a base plate, an ejector plate on the upper surface of the base plate, a moving mold on the upper surface of the ejector plate, a fixed mold on the upper surface of the moving mold, a runner plate on the upper surface of the fixed mold, a panel on the upper surface of the runner plate, slots at each of the four corners of the upper surface of the moving mold, positioning pins within the slots, positioning grooves on opposite surfaces of the moving mold, mounting grooves on opposite surfaces of the inner walls of the positioning grooves, and symmetrical through grooves on one side of the inner wall of the mounting grooves. A fixing groove is provided on one side of the inner wall of the through groove. Insert blocks are symmetrically arranged on the upper surface of the moving mold. A locking block is provided in the mounting groove. Two sets of bolts are symmetrically inserted on one side of the locking block. A locking block is provided at one end of each set of bolts. Guide grooves are provided at the four corners of the upper surface of the fixed mold. Placement grooves are provided on the two opposite surfaces of the fixed mold. A locking groove is symmetrically arranged on the upper surface of the fixed mold. Insert pins are provided in the placement grooves. Cable management racks are symmetrically arranged on one side of both the fixed mold and the moving mold. Cable management racks have cable grooves on one side. Rubber pads are provided on the inner wall of the cable grooves.

[0007] Furthermore, the shape and size of the insert block are adapted to the slot, the shape and size of the insert post are adapted to the positioning slot, the placement slot communicates with the slot, and the shape and size of the positioning post are adapted to the guide slot.

[0008] Furthermore, a threaded hole is provided on one side of the locking block, and the locking block is threadedly engaged with two sets of bolts on one side. One end of each set of bolts is respectively placed in the threaded hole provided on one side of the locking block and is threadedly engaged with the threaded hole.

[0009] Furthermore, the locking block is made of special steel, and the two opposite surfaces of the insert post are respectively attached to one side of the two sets of locking blocks. The insert block is engaged with the locking slot, the insert post is engaged with the positioning slot, and the positioning post is engaged with the guide slot.

[0010] This utility model has the following beneficial effects:

[0011] This invention achieves initial positioning by engaging a positioning pin within a slot on the moving mold surface into a guide groove on the fixed mold surface. Subsequently, pins in placement slots on both sides of the fixed mold engage in the positioning groove. Then, symmetrically arranged inserts on the moving mold surface engage in symmetrically opened slots on the upper surface of the fixed mold. Simultaneously, one side of a locking block in an installation groove on the inner wall of the positioning groove, opposite to the two surfaces, abuts against the opposite surfaces of the inserts. Because the locking block is made of special steel, it possesses high hardness and wear resistance, capable of withstanding significant pressure and friction. During the engagement of the inserts into the positioning groove, the locking block, under the action of bolts and locking blocks, maintains a tight fit with the inserts, further enhancing positioning stability. This multi-positioning structure ensures accurate and stable alignment of the moving and fixed molds during mold closing. The tight fit between the moving and fixed molds not only guarantees mold stability during injection molding and reduces injection defects caused by mold misalignment, but also improves the molding quality of automotive plastic parts.

[0012] Meanwhile, the cable trays inside the cable management rack can neatly store and organize various types of cables within the mold. These cable trays are precisely designed to accommodate cables of different specifications, preventing them from tangling. A soft rubber pad is also installed on the inner wall of the cable trays, which effectively prevents the cables from being damaged by vibration or friction during mold operation.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1A schematic diagram of the overall structure of an injection mold for automotive plastic parts that facilitates demolding;

[0016] Figure 2 This is a schematic diagram of the overall structure of the moving mold in this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of section A;

[0018] Figure 4 This is an exploded view of the card assembly in this utility model;

[0019] Figure 5 This is a schematic diagram of the overall structure of the fixed mold in this utility model.

[0020] The components represented by each number in the attached diagram are listed below: 1. Base plate; 10. Ejector plate; 11. Moving mold; 12. Fixed mold; 13. Runner plate; 14. Panel; 110. Slot; 111. Positioning pin; 1100. Insert block; 112. Positioning groove; 113. Mounting groove; 114. Fixing groove; 115. Through groove; 116. Locking block; 117. Bolt; 118. Locking block; 119. Threaded hole; 120. Guide groove; 121. Placement groove; 123. Slot; 122. Insert pin; 2. Cable management rack; 20. Cable trough. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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 of this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figures 1-5 As shown, this utility model is an injection mold for automotive plastic parts that facilitates demolding. It includes a base plate 1, an ejector plate 10 on the upper surface of the base plate 1, a moving mold 11 on the upper surface of the ejector plate 10, a fixed mold 12 on the upper surface of the moving mold 11, a runner plate 13 on the upper surface of the fixed mold 12, a panel 14 on the upper surface of the runner plate 13, and slots 110 at each of the four corners of the upper surface of the moving mold 11. Positioning pins 111 are installed within the slots 110. The moving mold 11 is positioned opposite the two surfaces. The upper surface of the moving mold 11 is provided with a positioning groove 112. The inner walls of the positioning groove 112 are provided with mounting grooves 113 on opposite surfaces. The inner walls of the mounting groove 113 are symmetrically provided with through grooves 115 on one side. The inner walls of the through grooves 115 are provided with fixing grooves 114 on one side. The upper surface of the moving mold 11 is symmetrically provided with insert blocks 1100. The mounting groove 113 is provided with a locking block 116. Two sets of bolts 117 are symmetrically inserted on one side of the locking block 116. Each set of bolts 117 is provided with a locking block 118 at one end.

[0025] Furthermore, guide grooves 120 are provided at the four corners of the upper surface of the fixed mold 12, placement grooves 121 are provided on the two opposite surfaces of the fixed mold 12, and card slots 123 are symmetrically provided on the upper surface of the fixed mold 12. Insertion posts 122 are provided in the placement grooves 121. Cable management racks 2 are symmetrically provided on one side of both the fixed mold 12 and the moving mold 11. Cable management racks 20 are provided on one side of one side, and rubber pads are provided on the inner wall of the cable management racks 20.

[0026] Furthermore, the shape and size of the insert block 1100 are adapted to the slot 123, the shape and size of the insert post 122 are adapted to the positioning slot 112, the placement slot 121 communicates with the slot 123, the shape and size of the positioning post 111 are adapted to the guide slot 120, a threaded hole 119 is provided on one side of the locking block 118, and the side of the engaging block 116 is threadedly engaged with two sets of bolts 117. One end of each set of bolts 117 is respectively set in the threaded hole 119 provided on one side of the locking block 118 and threadedly engaged with the threaded hole 119.

[0027] Furthermore, the locking block 116 is made of special steel, and the two opposite surfaces of the insert post 122 are respectively attached to one side of the two sets of locking blocks 116. The insert block 1100 is engaged with the locking groove 123, the insert post 122 is engaged with the positioning groove 112, and the positioning post 111 is engaged with the guide groove 120.

[0028] It should be noted that in this invention, the positioning pin 111 in the slot 110 on the surface of the moving mold 11 engages with the guide groove 120 on the surface of the fixed mold 12, thereby achieving initial positioning. Then, the insert pins 122 in the placement grooves 121 on both sides of the fixed mold 12 engage with the positioning groove 112. Next, the symmetrically arranged insert blocks 1100 on the surface of the moving mold 11 engage with the symmetrically opened slots 123 on the upper surface of the fixed mold 12. Simultaneously, one side of the engaging block 116 in the mounting grooves 113 on the inner wall of the positioning groove 112 is in contact with the opposite surfaces of the insert pins 122. Because the engaging block 116 is made of special steel, it has high hardness and wear resistance, and can withstand significant pressure and friction. During the process of the insert pin 122 engaging with the positioning groove 112, the engaging block 116, under the action of the bolt 117 and the locking block 118, always maintains a tight fit with the insert pin 122, further enhancing the stability of the positioning. This multi-positioning structure enables the moving mold 11 and the fixed mold 12 to accurately and stably engage during mold closing. The tight fit between the moving mold 11 and the fixed mold 12 not only ensures the stability of the mold during injection molding and reduces injection defects caused by mold misalignment, but also improves the molding quality of automotive plastic parts.

[0029] Meanwhile, the cable trays 20 inside the cable management rack 2 can neatly store and organize various types of cables within the mold. These cable trays 20 are precisely designed to accommodate cables of different specifications, preventing them from tangling. A soft rubber pad is also installed on the inner wall of the cable trays 20, which effectively prevents the cables from being damaged by vibration or friction during mold operation.

[0030] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A plastic injection mold for automobile parts with easy demolding, comprising a base plate (1), characterized in that: The base plate (1) has an ejector plate (10) on its upper surface, a moving mold (11) on its upper surface, a fixed mold (12) on its upper surface, a runner plate (13) on its upper surface, a panel (14) on its upper surface, and slots (110) at the four corners of the upper surface of the moving mold (11). Positioning pins (111) are installed in the slots (110), and positioning grooves (112) are formed on opposite surfaces of the moving mold (11). The inner wall of the positioning groove (112) has two opposite surfaces with installation grooves (113). The inner wall of the installation groove (113) has a through groove (115) symmetrically provided on one side. The inner wall of the through groove (115) has a fixing groove (114) symmetrically provided on one side. The upper surface of the moving mold (11) has a symmetrically provided insert block (1100). The installation groove (113) has a locking block (116) symmetrically provided on one side of the locking block (116). Two sets of bolts (117) are symmetrically inserted on one side. Each set of bolts (117) has a locking block (118) at one end.

2. The injection mold for plastic automotive parts with easy demolding according to claim 1, characterized in that The fixed mold (12) has guide grooves (120) at all four corners of its upper surface, and placement grooves (121) are provided on two opposite surfaces of the fixed mold (12). The fixed mold (12) has symmetrical slots (123) on its upper surface, and a pin (122) is provided in the placement groove (121).

3. The automotive plastic part injection mold with easy demolding according to claim 1, wherein, The fixed mold (12) and the moving mold (11) are symmetrically provided with wire racks (2) on one side. The wire racks (2) have wire grooves (20) on one side, and the inner wall of the wire grooves (20) is provided with rubber pads.

4. The easy-release injection mold for plastic automotive parts according to claim 2, wherein The shape and size of the insert (1100) are adapted to the slot (123), the shape and size of the insert post (122) are adapted to the positioning slot (112), the placement slot (121) is connected to the slot (123), and the shape and size of the positioning post (111) are adapted to the guide slot (120).

5. The easy-release injection mold for plastic automotive parts according to claim 4, wherein The locking block (118) has a threaded hole (119) on one side, and the locking block (116) has a threaded engagement with two sets of bolts (117) on one side. One end of each set of bolts (117) is set in the threaded hole (119) on one side of the locking block (118) and is threadedly engaged with the threaded hole (119).

6. A conveniently demouldable injection mould for plastic parts for automobiles according to claim 5, characterized in that, The locking block (116) is made of special steel. The two opposite surfaces of the insert (122) are respectively attached to one side of the two sets of locking blocks (116). The insert (1100) is engaged with the slot (123). The insert (122) is engaged with the positioning slot (112). The positioning post (111) is engaged with the guide slot (120).

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