A core-pulling mechanism of a tail lamp ornament injection mold

Abstract

The utility model relates to a core-pulling mechanism of tail lamp ornament injection mold belongs to injection mold technical field. Including the top plate, fixed mold plate, movable mold plate and footboard that arrange in proper order, the movable mold plate outside wall is equipped with the fixed installation platform of linkage, is equipped with the fixed cylinder of installation platform, the end of cylinder is equipped with the telescopic piston rod, the movable mold plate inside is equipped with the sliding block of sliding connection, the piston rod is fixedly connected with sliding block, one side of sliding block is equipped with inclined slide rail close to the one side of forming cavity, is equipped with the core-pulling block of sliding connection on inclined slide rail, the core-pulling block is obliquely arranged in movable mold plate inside, the top of core-pulling block is equipped with the forming part, and the forming part inserts the inside of auxiliary cavity, in this scheme, adopt the structure that the forming part inserts auxiliary cavity inside and forms the buckle, drive core-pulling mechanism through cylinder, before the ejector pin ejection demoulding, first, the forming part is extracted from auxiliary cavity, avoids the technical problem that the buckle on tail lamp plate cannot be extracted from auxiliary cavity in the process of subsequent demoulding.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology and relates to a core-pulling mechanism for an injection mold of a taillight trim piece. Background Technology

[0002] Injection molds are devices used to produce plastic products. Plastic raw materials are heated to a molten state and then injected into the molding cavity inside the mold. After the molding cavity is filled, the mold is rapidly cooled, and the molten plastic raw materials cool and solidify to form the desired plastic parts. Using injection molds to produce plastic products has advantages such as high precision and high efficiency.

[0003] Taillight trim on electric vehicles is a product made of plastic material, so it can be produced by injection molding. However, the existing injection molds used to produce taillight trim still have some shortcomings. In order to facilitate the installation of taillight trim onto the electric vehicle shell, a snap-fit ​​structure that is integrally connected to it needs to be set on the taillight trim panel. Since the snap-fit ​​structure is grooved, it is easy to encounter the problem of demolding difficulties during the production process using injection molding. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the current technology by proposing a core-pulling mechanism for a taillight trim injection mold. The technical problem to be solved by this utility model is: how to make the injection mold used to produce taillight trim panels with buckles.

[0005] The objective of this utility model can be achieved through the following technical solution: A core-pulling mechanism for a taillight trim injection mold, comprising a top plate, a fixed template, a moving template, and a foot plate arranged sequentially. A molding cavity is provided between the fixed template and the moving template. A taillight plate, which has been cooled and molded, is provided inside the molding cavity. A connected sub-cavity is provided at the bottom of the molding cavity. A buckle integrally connected to the taillight plate is provided inside the sub-cavity. A mounting platform is fixedly connected to the outer wall of the moving template. A cylinder is fixedly connected to the mounting platform. A retractable piston rod is provided at the end of the cylinder. A sliding block is slidably connected inside the moving template. The sliding block is fixedly connected to the piston rod. An inclined slide rail is provided on the side of the sliding block near the molding cavity. A core-pulling block is slidably connected to the inclined slide rail. The core-pulling block is obliquely disposed inside the moving template. A molding part is provided at the top of the core-pulling block. The molding part is inserted into the interior of the sub-cavity.

[0006] In this design, the main body of the taillight panel is formed inside the molding cavity. Because a connected sub-cavity is provided within the molding cavity, a snap-fit ​​structure integrally connected to the taillight panel can be formed inside the sub-cavity. During demolding, the cylinder controls the piston rod to pull the slider outwards. Since the core-pulling block is slidably connected to the inclined slide rail on the slider, the core-pulling block moves obliquely downwards away from the molding cavity along the direction of the inclined slide rail, pulling the molded part out of the sub-cavity. This facilitates the subsequent ejection of the taillight panel from the moving template for demolding. Through this method, the molded part is inserted into the sub-cavity to form a snap-fit ​​structure. By driving the core-pulling mechanism with a cylinder, the molded part is pulled out of the sub-cavity before the ejector pin ejects it for demolding, avoiding the technical problem that the snap-fit ​​on the taillight panel cannot be pulled out of the sub-cavity during subsequent demolding.

[0007] In the core-pulling mechanism of the aforementioned taillight trim injection mold, a reset block is fixedly attached to the outer wall of the fixed mold plate. The bottom of the reset block can slide into the mounting platform, and a guide slope is provided at the bottom of the reset block, which abuts against the outer wall of the slider. During mold closing, the reset block can move and insert into the mounting platform, pushing the slider into the mold through the guide slope, thereby resetting the slider and the core-pulling block, facilitating the next injection molding.

[0008] In the core-pulling mechanism of the aforementioned taillight trim injection mold, the bottom of the reset block has a downward-facing groove, and the piston rod is located inside the groove. The groove at the bottom of the reset block allows the piston rod to slide through both sides of the bottom of the reset block, preventing interference.

[0009] In the core-pulling mechanism of the aforementioned taillight trim injection mold, the top plate is provided with a feed port, and the bottom of the feed port is provided with a feed channel. The feed channel passes through the fixed mold plate and connects to the molding cavity. After the plastic raw material is heated to a molten state, it is injected from the feed port. The molten plastic is injected into the molding cavity through the feed channel and completely fills the secondary cavity connected to the molding cavity.

[0010] In the core-pulling mechanism of the aforementioned taillight trim injection mold, a slidingly connected push plate is provided on the inner side of the foot plate. A fixed ejector pin is provided on the push plate, with one end of the ejector pin slidably passing through the moving mold plate and extending to the bottom of the molding cavity. During demolding, after the molding part is pulled out of the secondary cavity, it pushes the push plate inward. The push plate drives the fixed ejector pin to extend out from inside the moving mold plate, thereby ejecting the taillight panel that has cooled and formed inside the molding cavity.

[0011] In the core-pulling mechanism of the aforementioned taillight trim injection mold, the bottom of the foot plate is provided with a fixed base plate, and a fixed guide post is provided on the side of the base plate near the moving template. The guide post is slidably connected to the push plate. The guide post serves as a guide, allowing the push plate to be slidably positioned inside the foot plate.

[0012] In the core-pulling mechanism of the aforementioned taillight trim injection mold, the side walls of the moving and fixed mold plates are provided with several cooling channels, which are arranged around both sides of the molding cavity. Coolant is injected into the cooling channels to rapidly cool and solidify the molten plastic inside the molding cavity, thereby improving production efficiency.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. In this solution, a structure is adopted in which the molding part is inserted into the sub-cavity to form a snap-fit. The core-pulling mechanism is driven by a cylinder to pull the molding part out of the sub-cavity before the ejector pin is ejected and demolded. This avoids the technical problem that the snap-fit ​​on the taillight plate cannot be pulled out of the sub-cavity during the subsequent demolding process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the core-pulling block of this utility model;

[0017] Figure 3 This is a schematic diagram of the left half-section structure of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the taillight plate of this utility model.

[0019] In the diagram, 1. Top plate; 1a. Feed inlet; 1b. Feed channel; 2. Fixed template; 2a. Reset block; 2a1. Guide slope; 2a2. Groove; 3. Moving template; 3a. Mounting platform; 3b. Cooling channel; 4. Foot plate; 4a. Push plate; 4b. Ejector pin; 5. Bottom plate; 5a. Guide column; 6. Cylinder; 6a. Piston rod; 7. Slider; 7a. Inclined slide rail; 8. Core pulling block; 8a. Molding part; 9. Molding cavity; 9a. Secondary cavity; 10. Taillight plate; 11. Buckle. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] Example

[0022] like Figure 1As shown, the core-pulling mechanism of the taillight trim injection mold includes a top plate 1, a fixed template 2 fixedly connected to the bottom of the top plate 1, a slidingly connected movable template 3 at the bottom of the fixed template 2, a fixed foot plate 4 at the bottom of the movable template 3, a fixed base plate 5 at the bottom of the foot plate 4, cooling channels 3b inside the fixed template 2 and the movable template 3, a fixed reset block 2a on the top side wall of the fixed template 2, a fixed mounting platform 3a on the top side wall of the movable template 3, a fixed cylinder 6 on the mounting platform 3a, the reset block 2a being inserted into the mounting platform 3a, and a feed port 1a on the top plate 1.

[0023] like Figure 2 As shown, a forming cavity 9 is provided between the fixed template 2 and the moving template 3. A connected secondary cavity 9a is provided at the bottom of the forming cavity 9. Cooling channels 3b are arranged around both sides of the forming cavity 9. A retractable piston rod 6a is provided at the end of the cylinder 6. A sliding block 7 is provided inside the moving template 3. The sliding block 7 is fixedly connected to the piston rod 6a. An inclined slide rail 7a is provided on the side of the sliding block 7 near the forming cavity 9. A core-pulling block 8 is provided on the inclined slide rail 7a. The core-pulling block 8 is obliquely arranged inside the moving template 3. A forming part 8a is provided at the top of the core-pulling block 8. The forming part 8a is inserted into the interior of the secondary cavity 9a. A guide slope 2a1 is provided at the bottom of the reset block 2a. The guide slope 2a1 abuts against the outer wall of the sliding block 7. A push plate 4a is provided on the inner side of the foot plate 4. A fixed ejector pin 4b is provided on the push plate 4a. One end of the ejector pin 4b is slidably connected through the moving template 3 and extends to the bottom of the forming cavity 9.

[0024] like Figure 3 As shown, the bottom of the reset block 2a is provided with a downwardly oriented groove 2a2, the piston rod 6a is located inside the groove 2a2, the top plate 1 is provided with a feed inlet 1a, the bottom of the feed inlet 1a is provided with a feed channel 1b, the feed channel 1b passes through the fixed template 2 and is connected to the forming cavity 9, the bottom of the foot plate 4 is provided with a fixed base plate 5, the side of the base plate 5 near the moving template 3 is provided with a fixed guide post 5a, the guide post 5a is slidably connected to the push plate 4a.

[0025] like Figure 4 As shown, the molding cavity 9 is provided with a taillight plate 10 that has been cooled and formed inside. The taillight plate 10 is provided with an integrally connected buckle 11, which is cooled and formed inside the secondary cavity 9a.

[0026] The working principle of this solution is as follows: Figure 1-4As shown, after the moving template 3 and the fixed template 2 are closed, the reset block 2a fixed on the moving template 3 will be inserted into the mounting platform 3a. The guide slope 2a1 pushes the slider 7 to move into the mold, realizing the reset of the slider 7 and the core-pulling block 8. The plastic raw material heated to a molten state is injected from the feed port 1a. The molten plastic is injected into the molding cavity 9 through the feed channel 1b, and completely fills the secondary cavity 9a connected to the molding cavity 9. Then, the cooling channel 3b rapidly cools the inside of the molding cavity 9, so that the inside of the molding cavity 9 cools and forms the taillight plate 10. Then, the moving template 3a is inserted into the mold. The moving template 3 is separated from the fixed template 2. At the same time, the reset block 2a on the fixed template 2 is pulled out from the mounting platform 3a. The cylinder 6 controls the piston rod 6a to pull out the slider 7. Since the core-pulling block 8 is slidably connected to the inclined slide rail 7a on the slider 7, the core-pulling block 8 moves obliquely downward away from the molding cavity 9 along the direction of the inclined slide rail 7a, pulling out the molding part 8a from the secondary cavity 9a. Finally, the push plate 4a is pushed inward. The push plate 4a drives the fixed ejector pin 4b to extend out from the inside of the moving template 3, thereby ejecting the taillight plate 10 that has been cooled and formed inside the molding cavity 9.

[0027] In the above structure, the molding part 8a is inserted into the sub-cavity 9a to form a snap-fit ​​11. The core-pulling mechanism is driven by the cylinder 6. Before the ejector pin 4b is ejected and demolded, the molding part 8a is pulled out from the sub-cavity 9a first, so as to avoid the technical problem that the snap-fit ​​11 on the taillight plate 10 cannot be pulled out from the sub-cavity 9a during the subsequent demolding process.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0029] Although this document frequently uses terms such as 1. top plate; 1a. feed inlet; 1b. feed channel; 2. fixed template; 2a. reset block; 2a1. guide slope; 2a2. groove; 3. moving template; 3a. mounting platform; 3b. cooling channel; 4. foot plate; 4a. push plate; 4b. ejector pin; 5. bottom plate; 5a. guide column; 6. cylinder; 6a. piston rod; 7. slider; 7a. inclined slide rail; 8. core-pulling block; 8a. molding part; 9. molding cavity; 9a. secondary cavity; 10. taillight plate; 11. buckle, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A core-pulling mechanism for an injection mold of a taillight trim piece, comprising a top plate (1), a fixed template (2), a movable template (3), and a foot plate (4) arranged sequentially, wherein a molding cavity (9) is provided between the fixed template (2) and the movable template (3), and a taillight plate (10) formed by cooling is provided inside the molding cavity (9), characterized in that, The bottom of the forming cavity (9) is provided with a connected sub-cavity (9a). The sub-cavity (9a) is provided with a buckle (11) integrally connected to the taillight plate (10). The outer wall of the moving template (3) is provided with a fixed mounting platform (3a). The mounting platform (3a) is provided with a fixed cylinder (6). The end of the cylinder (6) is provided with a retractable piston rod (6a). The moving template (3) is provided with a sliding block (7). The sliding block (7) is fixedly connected to the piston rod (6a). The side of the sliding block (7) near the forming cavity (9) is provided with an inclined slide rail (7a). The inclined slide rail (7a) is provided with a sliding core-pulling block (8). The core-pulling block (8) is obliquely arranged inside the moving template (3). The top of the core-pulling block (8) is provided with a forming part (8a). The forming part (8a) is inserted into the interior of the sub-cavity (9a).

2. The core-pulling mechanism of a taillight trim injection mold according to claim 1, characterized in that, The outer wall of the fixed template (2) is provided with a fixed reset block (2a). The bottom of the reset block (2a) can be slidably inserted into the mounting platform (3a). The bottom of the reset block (2a) is provided with a guide slope (2a1). The guide slope (2a1) abuts against the outer wall of the slider (7).

3. The core-pulling mechanism of a taillight trim injection mold according to claim 2, characterized in that, The bottom of the reset block (2a) is provided with a downwardly oriented groove (2a2), and the piston rod (6a) is located inside the groove (2a2).

4. The core-pulling mechanism of a taillight trim injection mold according to claim 1, characterized in that, The top plate (1) is provided with a feed inlet (1a), and the bottom of the feed inlet (1a) is provided with a feed channel (1b). The feed channel (1b) passes through the fixed template (2) and is connected to the forming cavity (9).

5. The core-pulling mechanism of a taillight trim injection mold according to claim 1, characterized in that, The foot plate (4) is provided with a slidingly connected push plate (4a) on its inner side. The push plate (4a) is provided with a fixed ejector pin (4b). One end of the ejector pin (4b) slides through the moving template (3) and extends to the bottom of the forming cavity (9).

6. The core-pulling mechanism of a taillight trim injection mold according to claim 5, characterized in that, The bottom of the foot plate (4) is provided with a fixed base plate (5), and the side of the base plate (5) near the moving template (3) is provided with a fixed guide post (5a), and the guide post (5a) is slidably connected to the push plate (4a).

7. The core-pulling mechanism of a taillight trim injection mold according to claim 1, characterized in that, The moving template (3) and the fixed template (2) are provided with a plurality of cooling channels (3b) on their side walls, and the cooling channels (3b) are arranged around both sides of the molding cavity (9).

Images