Ejection core-pulling device in mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an ejection core-pulling device in a mold, which comprises an injection molding component, the injection molding component comprises a mold A, a cavity is arranged in the mold A, a mold B capable of moving up and down is arranged below the mold A, an insert is arranged in the mold B, and the mold A is provided with a cavity. The mold insert in the mold B can be matched with the mold cavity in the mold A, a gap capable of forming a decorative ring product is reserved between the mold insert and the mold cavity, and an ejection core-pulling structure which can be matched with the mold insert, can eject out the decorative ring product formed between the mold cavity and the mold insert in an injection molding manner and can perform an inverted buckle removing action is arranged in the mold B. Compared with the prior art, the ejection core-pulling device in the mold has the advantages that through the arrangement of the structure, the driving force of ejection can be utilized to drive the core-pulling structure to remove the inverted buckle while ejecting, the forming period is shortened, meanwhile, the structure is safe and stable, the space is small, and the space can be saved for arranging a waterway.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, specifically to an ejecting core-pulling device in a mold. Background Art

[0002] This injection mold is for the mold of an automobile headlight decorative frame. The decorative frame is an important component of the automobile headlight. Due to its special position and use inside the headlight, the decorative frame is exposed, and there are requirements for leather texture, high gloss, and electroplating on the product surface, with extremely high appearance requirements. At the same time, the product is installed on the lens for exterior decoration and occlusion. Under the strong light of the lens, the appearance defects of the product are more obvious. The product is usually small but has many structures, and it is necessary to solve the problem of mold release of the structure in a compact space while ensuring the appearance of the product, which increases great difficulty in mold development. Therefore, an ejecting core-pulling device in the mold is proposed. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the utility model provides an ejecting core-pulling device in a mold, which solves the problems raised in the above background art.

[0005] (II) Technical Solutions

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions: An ejecting core-pulling device in a mold includes an injection molding assembly. The injection molding assembly includes mold A. A cavity is provided in mold A. A mold B capable of moving up and down is provided below mold A. An insert is provided in mold B. The insert in mold B can cooperate with the cavity in mold A, and there is a gap between the insert and the cavity that can form a decorative ring product. A top-out core-pulling structure capable of cooperating with the insert and ejecting the decorative ring product molded between the cavity and the insert and capable of performing a reverse buckle release action is provided in mold B.

[0007] Further, the top-out core-pulling structure includes a push rod. The push rod is arranged in mold B and can move. A push block adapted to the insert is provided in the insert. A connecting plate is provided on the surface of the push block. A core-pulling is sequentially provided on the surface of the push block. The push rod can drive the push block to move and eject the decorative ring product. The core-pulling performs a reverse buckle release action during the movement of the push block.

[0008] Further, a lower top plate capable of moving is provided below mold B. An upper top plate in contact with the lower top plate is provided on the lower top plate. A push rod fixing seat connected to the push rod is provided in the upper top plate. A core-pulling guide block is provided in the insert. The core-pulling guide block is installed in mold B, and the core-pulling can displace along the surface of the core-pulling guide block.

[0009] Further, a limit bolt capable of being inserted into the upper top plate and locking and limiting the push rod is provided in the lower top plate, and a top block guide rod sleeved on the push rod is provided in the B mold.

[0010] Further, a dovetail long block is provided at the top end of the core-pulling guide block, and a dovetail groove adapted to the dovetail long block is provided in the core-pulling part.

[0011] Further, a square iron in contact with the B mold is provided below the B mold, the upper top plate and the lower top plate are located in the square iron, and a moving mold fixing plate connected to the square iron is provided below the square iron.

[0012] Ejecting and simultaneous core-pulling action: The injection molding machine drives the lower top plate, and the push block drives the product ejector pin through the push rod. The core-pulling part is installed in the push block. During the ejection, and the core-pulling guide block is fixed in the B mold and will not move together. However, the dovetail groove of the core-pulling guide block is connected to the core-pulling part, which will cause the core-pulling part to move inwards during the process of being ejected together with the push block, realizing the undercut release action.

[0013] Compared with the prior art, the ejecting and core-pulling device in this mold, through the setting of this structure, can utilize the driving force of the ejection itself to drive the core-pulling structure to release the undercut while ejecting, saving the molding cycle. At the same time, the structure is safe and stable, and the space is small, which can save space for arranging the water circuit. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the ejecting and core-pulling structure and the garnish ring product of the present invention;

[0015] Figure 2 It is a schematic structural diagram of the ejecting and core-pulling structure of the present invention;

[0016] Figure 3 For the present invention Figure 1 Schematic structural diagram of the split;

[0017] Figure 4 For the present invention Figure 1 Schematic cross-sectional structural diagram;

[0018] Figure 5 For the present invention Figure 1 Schematic structural diagram applied in the B mold;

[0019] Figure 6 It is a schematic structural diagram of the A mold and the B mold of the present invention.

[0020] In the figure: 1, injection molding assembly; 2, mold A; 3, mold B; 6, ejection and core-pulling structure; 7, cavity; 8, insert; 13, limit bolt; 27, ejector pin; 28, push block; 29, connecting plate; 30, core-pulling; 31, square iron; 32, lower top plate; 33, upper top plate; 34, ejector pin fixing seat; 35, core-pulling guide block; 36, ejector block guide rod; 37, moving mold fixing plate; 38, dovetail long block; 39, dovetail groove; 41, decorative ring product. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Please refer to Figures 1 to 6 , the present invention provides a technical solution: an ejection and core-pulling device in a mold, including an injection molding assembly 1. The injection molding assembly 1 includes a mold A 2. A cavity 7 is provided in the mold A 2. A mold B 3 capable of moving up and down is provided below the mold A 2. A lower top plate 32 capable of moving is provided below the mold B 3. A limit bolt 13 capable of inserting into the upper top plate 33 and limiting and locking the ejector pin 27 is provided in the lower top plate 32. An ejector block guide rod 36 capable of being sleeved with the ejector pin 27 is provided in the mold B 3. An upper top plate 33 in contact with the lower top plate 32 is provided on the lower top plate 32. A square iron 31 in contact with the mold B 3 is provided below the mold B 3. The upper top plate 33 and the lower top plate 32 are located in the square iron 31. A moving mold fixing plate 37 connected to the square iron 31 is provided below the square iron 31. An ejector pin fixing seat 34 connected to the ejector pin 27 is provided in the upper top plate 33. A core-pulling guide block 35 is provided in the insert 8. The core-pulling guide block 35 is installed in the mold B 3. The core-pulling 30 can move along the surface of the core-pulling guide block 35. A dovetail long block 38 is provided at the top end position of the core-pulling guide block 35. A dovetail groove 39 adapted to the dovetail long block 38 is provided in the core-pulling 30. An insert 8 is provided in the mold B 3. The insert 8 in the mold B 3 can cooperate with the cavity 7 in the mold A 2, and a gap capable of forming a decorative ring product 41 is left between the insert 8 and the cavity 7. An ejection and core-pulling structure 6 capable of cooperating with the insert 8, ejecting the decorative ring product 41 formed between the cavity 7 and the insert 8, and performing a reverse buckle release action is provided in the mold B 3. The ejection and core-pulling structure 6 includes an ejector pin 27. The ejector pin 27 is provided in the mold B 3 and can move. A push block 28 adapted to the insert 8 is provided in the insert 8. A connecting plate 29 is provided on the surface of the push block 28. The core-pulling 30 is sequentially provided on the surface of the push block 28. The ejector pin 27 can drive the push block 28 to move and eject the decorative ring product 41. The core-pulling 30 performs a reverse buckle release action during the movement of the push block 28.

[0023] In the description of this specification, terms such as "connection", "installation", "fixation", "setting", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and technical effects, or it can be an integral connection or a partial connection. In the case of this example, for those of ordinary skill in the art, the specific meanings of the above terms in this utility model or the utility model can be understood according to specific circumstances.

[0024] As mentioned above, the above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. The ejector core-pulling device in the mold, including an injection molding component (1), is characterized in that: The injection molding assembly (1) includes a mold A (2). A cavity (7) is provided in the mold A (2). Below the mold A (2), there is a mold B (3) capable of moving up and down. An insert (8) is provided in the mold B (3). The insert (8) in the mold B (3) can cooperate with the cavity (7) in the mold A (2), and there is a gap between the insert (8) and the cavity (7) that can form a decorative ring product (41). In the mold B (3), there is an ejection and core-pulling structure (6) that can cooperate with the insert (8), inject and mold the decorative ring product (41) between the cavity (7) and the insert (8), and can eject the product and perform a reverse buckle release action. The ejection and core-pulling structure (6) includes a push rod (27). The push rod (27) is arranged in the mold B (3) and can move. In the insert (8), there is a push block (28) adapted to the insert (8). A connecting plate (29) is provided on the surface of the push block (28). A core-pulling part (30) is successively provided on the surface of the push block (28). The push rod (27) can drive the push block (28) to move and eject the decorative ring product (41). During the movement of the push block (28), the core-pulling part (30) performs a reverse buckle release action.

2. The ejector core-pulling device in the mold according to claim 1, wherein: Below the mold B (3), there is a lower top plate (32) capable of moving. An upper top plate (33) in contact with the lower top plate (32) is provided on the lower top plate (32). A push rod fixing seat (34) connected to the push rod (27) is provided in the upper top plate (33). A core-pulling guide block (35) is provided in the insert (8). The core-pulling guide block (35) is installed in the mold B (3). The core-pulling part (30) can displace along the surface of the core-pulling guide block (35).

3. The ejection and core-pulling device in the mold according to claim 2, characterized in that: A limit bolt (13) capable of being inserted into the upper top plate (33) and locking and limiting the push rod (27) is provided in the lower top plate (32). A top block guide rod (36) that is sleeved on the push rod (27) is provided in the mold B (3).

4. The ejector core-pulling device in the mold according to claim 3, characterized in that: A dovetail long block (38) is provided at the top end position of the core-pulling guide block (35). A dovetail groove (39) adapted to the dovetail long block (38) is provided in the core-pulling part (30).

5. The ejector core-pulling device in the mold according to claim 4, wherein: Below the mold B (3), there is a square iron (31) in contact with the mold B (3). The upper top plate (33) and the lower top plate (32) are located in the square iron (31). Below the square iron (31), there is a moving mold fixing plate (37) connected to the square iron (31).

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