A novel mold ejection structure

Abstract

This utility model relates to the field of mold technology, specifically a novel mold ejection structure, including a locking tongue composed of a metal part and a plastic part injection-molded onto the metal part; a slider disposed on the outer left side of the plastic part; a large angled ejector disposed on the lower left side of the plastic part; a small angled ejector disposed on the lower right side of the plastic part; and a positioning ejector block disposed below the metal part. This utility model employs a composite ejection method where the large and small angled ejectors eject simultaneously and then sequentially. This allows the large angled ejector to complete the demolding of the main product structure first, creating space. Subsequently, the small angled ejector, through a unique "first straight ejection, then angled ejection" trajectory, effectively avoids the structure of the large angled ejector, thus completely and undamagedly ejecting the complex undercut structure inside the product.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a novel mold ejection structure. Background Technology

[0002] Plastic coating of automotive lock tongues refers to covering the outside of the automotive lock tongue (i.e., the lock cylinder part) with a layer of plastic material. The main purpose of this design is to protect the lock tongue itself, extend its service life, and also enhance its aesthetics and feel. During the plastic coating process, injection molding is usually used.

[0003] Currently, existing automotive lock tongue encapsulation molds on the market are not convenient for removing the injection-molded automotive lock tongue during use. Utility Model Content

[0004] The purpose of this invention is to provide a novel mold ejection structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel mold ejection structure, including

[0007] The latch consists of a metal part and a plastic part injection molded onto the metal part;

[0008] A slider is located on the outer left side of the plastic part;

[0009] A large sloping top is located on the lower left side of the plastic part;

[0010] Small sloping tops are located at both ends of the lower right side of the plastic part;

[0011] The positioning top block is located below the hardware component.

[0012] Preferably, the lower part of the plastic part is provided with an arc-shaped groove, the side of the plastic part near the slider is provided with a positioning groove, and the side of the slider near the plastic part is fixedly connected with a positioning boss that cooperates with the positioning groove;

[0013] Preferably, an arc-shaped support plate is fixedly connected to the top of the large sloping top, and the arc-shaped support plate is matched and abuts against the lower left end face of the arc-shaped groove;

[0014] Preferably, a support boss for supporting the lower left end face of the plastic part is fixedly connected at the connection between the arc-shaped support plate and the large inclined top and at the end near the slider.

[0015] Preferably, the top of each of the two small inclined tops is fixedly connected to an arc-shaped support block that matches the lower right end face of the arc-shaped groove;

[0016] Preferably, a locking groove is provided through the middle of the hardware component, and a positioning protrusion that cooperates with the locking groove is fixedly connected to the top of the positioning top block.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This novel mold ejection structure employs a composite ejection method that uses a large and a small inclined ejector to eject simultaneously and then in sequence. This allows the large inclined ejector to complete the demolding of the main product structure first and create space. Subsequently, the small inclined ejector, through a unique "first straight ejection, then inclined ejection" motion trajectory, effectively avoids the structure of the large inclined ejector, thus completely and without damage ejecting the complex undercut structure inside the product. This completely solves the technical problem of existing molds being unable to smoothly remove automotive lock tongue plastic parts with deep cavities and irregular undercuts.

[0019] 2. This novel mold ejection structure, by setting a positioning top block and its positioning protrusion that cooperate with the locking groove on the hardware, can accurately fix the position of the hardware during the injection molding process, effectively preventing its displacement or loosening; at the same time, the positioning protrusion on the slider and the positioning groove of the plastic part are closely matched, together ensuring the relative positional accuracy of the hardware and plastic parts during the molding process, thereby greatly improving the molding quality and dimensional consistency of the automotive lock tongue plastic-coated product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall side view structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the positioning groove structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the support boss structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the positioning boss structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the arc-shaped support block structure of this utility model.

[0025] In the diagram: 1. Lock tongue; 101. Hardware; 1011. Lock groove; 102. Plastic part; 103. Arc groove; 2. Slider; 201. Positioning boss; 3. Large sloping top; 301. Arc support plate; 302. Support boss; 4. Small sloping top; 401. Arc support block; 5. Positioning top block; 501. Positioning protrusion; 6. Positioning groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0027] like Figure 1-5 As shown, this utility model provides a technical solution:

[0028] A novel mold ejection structure includes a locking tongue 1, which is composed of a metal part 101 and a plastic part 102 injection-molded onto the metal part 101. The lower part of the plastic part 102 has an arc-shaped groove 103. A positioning groove 6 is formed through the plastic part 102 near the slider 2. A positioning boss 201 that mates with the positioning groove 6 is fixedly connected to the side of the slider 2 near the plastic part 102. The slider 2 is located on the left outer side of the plastic part 102. An arc-shaped support plate 301 is fixedly connected to the top of the large inclined ejector 3. The arc-shaped support plate 301 abuts against the lower left end face of the arc-shaped groove 103. The arc-shaped support plate 301 and... A support boss 302 for supporting the lower left side of the plastic part 102 is fixedly connected at the connection of the large inclined top 3 and at one end near the slider 2. The large inclined top 3 is located on the lower left side of the plastic part 102. The small inclined top 4 is located at both ends on the lower right side of the plastic part 102. The top of each of the two small inclined tops 4 is fixedly connected to an arc-shaped support block 401 that matches the lower right side of the arc-shaped groove 103. The positioning top block 5 is located below the hardware part 101. A locking groove 1011 is opened through the middle of the hardware part 101. The top of the positioning top block 5 is fixedly connected to a positioning protrusion 501 that cooperates with the locking groove 1011.

[0029] In this embodiment, by adopting a composite ejection method in which the large angled ejector 3 and the small angled ejector 4 eject synchronously and then in sequence, the large angled ejector 3 can first complete the demolding of the main structure of the product and make room. Then, the small angled ejector 4 effectively avoids the structure of the large angled ejector 3 through a unique "first straight ejection, then angled ejection" motion trajectory, thereby completely and without damage removing the complex undercut structure inside the product. This completely solves the technical problem that existing molds cannot easily remove the plastic-coated automotive lock tongue with deep cavity and irregular undercut.

[0030] Furthermore, by setting a positioning top block 5 and its positioning protrusion 501 that cooperate with the locking groove 1011 on the hardware 101, the position of the hardware 101 can be accurately fixed during the injection molding process, effectively preventing it from shifting or loosening; at the same time, the positioning protrusion 201 on the slider 2 and the positioning groove 6 of the plastic part 102 are closely cooperated to ensure the relative positional accuracy of the hardware 101 and the plastic part 102 during the molding process, thereby greatly improving the molding quality and dimensional consistency of the automotive lock tongue plastic coating product.

[0031] Working Principle: First, the large angled ejector 3 and the small angled ejector 4 begin ejection simultaneously under the action of the drive mechanism. In this first stage, the large angled ejector 3 moves along its angled track to achieve angled ejection; while the small angled ejector 4 moves vertically to achieve vertical ejection. Both eject synchronously for 28mm, acting together on the plastic part 102 of the locking tongue 1 to begin demolding. When the ejection stroke reaches 28mm, the large angled ejector 3 stops moving. Then, in the second stage, the small angled ejector 4 continues to eject independently for 20mm vertically under the action of the drive mechanism. This vertical ejection stroke further raises the small angled ejector 4 and its top arc-shaped support block 401, thus completely avoiding the movement space of the large angled ejector 3 and its support boss 302. After completing the 20mm vertical ejection, the third stage begins. The guide mechanism of the small angled ejector 4 switches its movement trajectory, changing it from vertical movement to movement along the angled track. The small inclined ejector 4 continues to eject at an angle of 40mm. During this inclined ejection process, the arc-shaped support block 401 at its top slides along the right side of the arc-shaped groove 103 of the plastic part 102, and finally completes the demolding of the complex structure of the locking tongue 1 at a specific angle and path.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel mold ejection structure characterized by: include The latch (1) consists of a hardware part (101) and a plastic part (102) injection molded onto the hardware part (101); The slider (2) is located on the outer left side of the plastic part (102); A large sloping top (3) is located on the lower left side of the plastic part (102); Small sloping tops (4) are located at both ends of the lower right side of the plastic part (102); The positioning top block (5) is located below the hardware (101).

2. A novel mold ejection structure according to claim 1, characterized by: The lower part of the plastic part (102) is provided with an arc groove (103), and a positioning groove (6) is provided through the side of the plastic part (102) near the slider (2). A positioning boss (201) that cooperates with the positioning groove (6) is fixedly connected to the side of the slider (2) near the plastic part (102).

3. A novel mold ejection structure according to claim 2, characterized by: The top of the large sloping top (3) is fixedly connected to an arc-shaped support plate (301), which abuts against the lower left side of the arc-shaped groove (103).

4. A novel mold ejection structure according to claim 3, characterized by: At the connection between the arc-shaped support plate (301) and the large inclined top (3) and near the end of the slider (2), a support boss (302) for supporting the lower left side of the plastic part (102) is fixedly connected.

5. The novel mold ejection structure according to claim 4, characterized in that: The tops of the two small inclined tops (4) are fixedly connected to an arc-shaped support block (401) that matches the lower right end face of the arc-shaped groove (103).

6. A novel mold ejection structure according to claim 1, characterized by: The hardware component (101) has a through-hole groove (1011) in the middle, and the top of the positioning top block (5) is fixedly connected to a positioning protrusion (501) that cooperates with the locking groove (1011).

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