A core-pulling mechanism of an inner fender injection mold

Abstract

This utility model relates to a core-pulling mechanism for an injection mold of an inner baffle plate, belonging to the field of injection mold technology. It includes a top plate, a fixed platen, a moving platen, and a foot plate arranged sequentially. A molding cavity is provided between the fixed platen and the moving platen. A cooling baffle is provided inside the molding cavity. A cylinder is fixedly connected to the outer wall of the fixed platen, and a retractable piston rod is mounted on the cylinder. A slider is slidably connected inside the fixed platen, and the slider is connected to the piston rod. An obliquely arranged slide rail is provided inside the slider, and a core-pulling rod is slidably connected inside the slide rail. The core-pulling rod is perpendicular to the slide rail, and its end has several insertion rods that can be inserted into the molding cavity and form oblique mounting holes on the baffle plate. In this solution, because the core-pulling rod is perpendicular to the obliquely arranged slide rail, the insertion rods at the end of the core-pulling rod can be obliquely inserted into the molding cavity, forming oblique mounting hole structures on the baffle plate, thus solving the technical problem of requiring secondary machining of mounting holes by workers.

Description

Technical Field

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

[0002] The inner windshield is part of the electric vehicle's shell, installed at the front end and fitting in place with the outer windshield. Because the inner windshield is made of plastic, it is typically manufactured using injection molding. An injection mold is a device used to produce plastic products. The plastic raw material is heated to a molten state and then injected into a pre-designed molding cavity. Once the cavity is full, the mold is rapidly cooled, causing the molten plastic to solidify and form the desired plastic part. Using injection molding to produce plastic products offers advantages such as high precision and high efficiency.

[0003] However, the injection molds used in the existing technology for producing inner wind deflectors still have some shortcomings. After the overall structure of the inner wind deflector is cooled and formed in the mold and removed from the mold, workers need to process the oblique mounting hole structure on the inner wind deflector a second time, which reduces production efficiency. 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 an inner baffle injection mold. The technical problem to be solved by this utility model is: how to directly form an oblique mounting hole structure on the inner baffle during the injection molding process.

[0005] The objective of this utility model can be achieved through the following technical solution: A core-pulling mechanism for an injection mold of an inner baffle plate includes a top plate, a fixed template, a moving template, and a foot plate arranged in sequence. A molding cavity is provided between the fixed template and the moving template. A baffle for cooling and molding is provided inside the molding cavity. A cylinder is fixedly connected to the outer wall of the fixed template. A retractable piston rod is provided on the cylinder. A slider is slidably connected inside the fixed template. The slider is connected to the piston rod. An obliquely arranged slide rail is provided inside the slider. A core-pulling rod is slidably connected inside the slide rail. The orientation of the core-pulling rod is perpendicular to the slide rail. Several insertion rods are provided at the end of the core-pulling rod. The insertion rods can be inserted into the molding cavity and form oblique mounting holes on the baffle plate.

[0006] In this solution, after the baffle cools and forms inside the molding cavity, the cylinder controls the piston rod to retract. The piston rod drives the slider to move away from the molding cavity, and the core-pulling rod is pulled out obliquely along the direction of the inclined slide rail. When the insert at the end of the core-pulling rod is completely pulled out from inside the molding cavity, the moving template is moved to open the mold, and the baffle is pushed out from inside the molding cavity by the demolding mechanism on the mold. In this way, since the core-pulling rod is perpendicular to the inclined slide rail, the insert at the end of the core-pulling rod can be inserted obliquely into the molding cavity, forming an oblique mounting hole structure on the baffle, which solves the technical problem of requiring workers to process the mounting hole a second time.

[0007] In the core-pulling mechanism of the aforementioned inner baffle injection mold, a slidable connecting block is provided inside the slider. The piston rod is fixedly connected to the connecting block, and abutment portions are provided on both sides of the connecting block. These abutment portions are movable and abut against the slider. The piston rod is fixedly connected to the connecting block. When the piston rod retracts, it first pulls the connecting block to slide inside the slider. After the connecting block slides a certain distance, the abutment portions on both sides abut against the inner wall of the slider, allowing the piston rod to pull the slider outwards together.

[0008] In the core-pulling mechanism of the aforementioned inner baffle injection mold, a retractable limiting block is provided inside the fixed mold plate. The limiting block is located below the slider and near the cylinder. The limiting block can move upward to abut against the slider. A guide slope is provided on the side of the limiting block near the connecting block. The connecting block can move outward to abut against the guide slope. A spring is provided at the bottom of the limiting block to push the limiting block upward. After the limiting block extends, it abuts against the slider, preventing the core-pulling rod from being pressured and pushing the slider outward during the injection process, which would cause the mounting hole on the baffle to be incompletely formed. After the baffle inside the molding cavity cools and forms, the piston rod retracts, first driving the connecting block to move. The connecting block presses down on the limiting block through the guide slope, so that the limiting block no longer abuts against the slider. The connecting block continues to be pulled outward, and the abutting parts on both sides abut against the inner wall of the slider, causing the slider to slide past the limiting block and move outward to pull the core.

[0009] In the core-pulling mechanism of the aforementioned inner baffle injection mold, fixed blocks are provided on both sides of the slider. The fixed blocks are fixedly connected to the fixed template, and the bottom of the fixed blocks and the fixed template form a sliding groove. The two sides of the slider are slidably connected to the sliding groove. The fixed blocks are located at the top of both sides of the slider to limit the sliding direction of the slider.

[0010] In the core-pulling mechanism of the aforementioned inner baffle injection mold, the top plate is provided with a feed inlet, and the inside of the top plate is provided with a flow divider plate connected to the feed inlet. The flow divider plate is provided with several nozzles, and the bottom of the nozzles is connected to the molding cavity. Molten plastic heated to a molten state is injected from the feed inlet, and after being divided by the flow divider plate, it flows evenly into the nozzles, through which the molten plastic is injected into the molding cavity.

[0011] In the core-pulling mechanism of the aforementioned inner baffle 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 passing through the moving mold plate and extending to the bottom of the molding cavity. After the moving mold plate moves and separates from the fixed mold plate, it pushes the push plate to move towards the moving mold plate. The push plate then causes the fixed ejector pin to extend from the bottom of the molding cavity, causing the molded baffle to disengage from the molding cavity.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. In this solution, since the core-pulling rod is perpendicular to the obliquely set slide rail, the insert at the end of the core-pulling rod can be inserted obliquely into the molding cavity, forming an oblique mounting hole structure on the baffle, thus solving the technical problem of requiring workers to perform secondary processing to create the mounting hole.

[0014] 2. In this solution, a spring is installed at the bottom of the limiting block to push the limiting block to extend upward. After the limiting block extends, it can resist the slider to prevent the core-pulling rod from being pushed outward by pressure during the injection molding process, which would result in incomplete molding of the mounting holes on the baffle. Attached Figure Description

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

[0016] Figure 2 This is a frontal half-sectional view of the structure of this utility model;

[0017] Figure 3 This is a front view cross-sectional structural diagram of the internal structure of the core-pulling rod of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure of the cylinder, slider, and core-pulling rod of this utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the baffle of this utility model.

[0020] In the diagram, 1 is the top plate; 1a is the feed inlet; 1b is the flow divider; 1c is the nozzle; 2 is the fixed template; 2a is the cylinder; 2a1 is the piston rod; 3 is the moving template; 4 is the foot plate; 4a is the push plate; 4b is the ejector pin; 5 is the molding cavity; 6 is the slider; 6a is the slide rail; 6b is the connecting block; 6b1 is the abutment part; 6c is the fixing block; 6c1 is the slide groove; 7 is the core-pulling rod; 7a is the insertion rod; 8 is the limiting block; 8a is the guide slope; 9 is the baffle; 9a is the mounting hole. Detailed Implementation

[0021] 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.

[0022] Example

[0023] like Figure 1 As shown, the core-pulling mechanism of the inner baffle injection mold includes a top plate 1, a fixed template 2 fixedly connected to the bottom of the top plate 1, a movable template 3 slidably connected to the bottom of the fixed template 2, a foot plate 4 fixedly connected to the bottom of the movable template 3, a push plate 4a slidably connected inside the foot plate 4, a feed port 1a on the top plate 1, and a cylinder 2a fixedly connected to the side wall of the fixed template 2.

[0024] like Figure 2 As shown, a forming cavity 5 is provided between the fixed template 2 and the moving template 3. A flow divider 1b connected to the feed inlet 1a is provided inside the top plate 1. A plurality of nozzles 1c are provided on the flow divider 1b. The bottom of the nozzles 1c is connected to the forming cavity 5. A sliding 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 passes through the moving template 3 and extends to the bottom of the forming cavity 5.

[0025] like Figure 3 Combination Figure 4 As shown, the cylinder 2a is provided with a retractable piston rod 2a1. The fixed template 2 is provided with a slidingly connected slider 6. The slider 6 is provided with a sliding connecting block 6b. The piston rod 2a1 is fixedly connected to the connecting block 6b. The connecting block 6b is provided with abutment parts 6b1 on both sides. The abutment parts 6b1 can move and abut against the slider 6. The slider 6 is provided with an obliquely arranged slide rail 6a. The slide rail 6a is provided with a slidingly connected core-pulling rod 7. The orientation of the core-pulling rod 7 is perpendicular to the slide rail 6a. The end of the core-pulling rod 7 is provided with several insertion rods 7a. The insertion rods 7a can be slidably inserted into the molding cavity 5. The slider 6 is provided with fixing blocks 6c on both sides. The fixing blocks 6c are fixedly connected to the fixed template 2. The bottom of the fixing block 6c and the fixed template 2 form a sliding groove 6c1. The two sides of the slider 6 are slidably connected to the sliding groove 6c1.

[0026] like Figure 5 As shown, the molding cavity 5 is provided with a cooling and molding baffle 9. The baffle 9 is provided with a mounting hole 9a. The mounting hole 9a is inclined to the surface of the baffle 9. The mounting hole 9a is formed by inserting a rod 7a into the molding cavity 5.

[0027] The working principle of this solution is as follows: Figure 1-5As shown, molten plastic heated to a molten state is injected into the inlet 1a. After being diverted by the flow divider 1b, it flows evenly into the nozzle 1c. The nozzle 1c injects the molten plastic into the molding cavity 5. After the molding cavity 5 is completely filled and cooled, the cylinder 2a controls the piston rod 2a1 to retract. The piston rod 2a1 drives the fixed connecting block 6b to move. The connecting block 6b presses down on the limiting block 8 through the guide slope 8a, so that the limiting block 8 no longer abuts against the slider 6. The connecting block 6b continues to be pulled outward, and the abutment parts 6b1 on both sides abut against the inner wall of the slider 6. The slider 6 slides past the limit block 8 and moves outward. As the slider 6 moves outward, the core-pulling rod 7 can be pulled out obliquely along the direction of the inclined slide rail 6a. When the insert rod 7a at the end of the core-pulling rod 7 is completely pulled out from inside the molding cavity 5, the moving template 3 is moved to open the mold and push the push plate 4a to move to one side of the moving template 3. The push plate 4a drives the fixed ejector pin 4b to extend from the bottom of the molding cavity 5, so that the molded baffle 9 can be dislodged from the molding cavity 5. Furthermore, an oblique mounting hole 9a structure can be directly formed on the baffle 9, which solves the technical problem of requiring workers to perform secondary processing to create the mounting hole 9a.

[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 substitute 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. flow divider; 1c. nozzle; 2. fixed template; 2a. cylinder; 2a1. piston rod; 3. moving template; 4. foot plate; 4a. push plate; 4b. ejector pin; 5. molding cavity; 6. slider; 6a. slide rail; 6b. connecting block; 6b1. abutment; 6c. fixing block; 6c1. slide groove; 7. core-pulling rod; 7a. insertion rod; 8. limiting block; 8a. guide slope; 9. baffle; 9a. mounting hole, 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 additional limitation would contradict the spirit of this utility model.

Claims

1. A core-pulling mechanism for an injection mold of an inner baffle plate, comprising a top plate (1), a fixed template (2), a movable template (3), and a foot plate (4) arranged in sequence, wherein a molding cavity (5) is provided between the fixed template (2) and the movable template (3), and a baffle (9) for cooling and molding is provided inside the molding cavity (5), characterized in that, A cylinder (2a) is fixedly connected to the outer wall of the fixed template (2). A retractable piston rod (2a1) is provided on the cylinder (2a). A slider (6) is slidably connected inside the fixed template (2). The slider (6) is connected to the piston rod (2a1). An obliquely arranged slide rail (6a) is provided inside the slider (6). A core-pulling rod (7) is slidably connected inside the slide rail (6a). The orientation of the core-pulling rod (7) is perpendicular to the slide rail (6a). Several insertion rods (7a) are provided at the end of the core-pulling rod (7). The insertion rods (7a) can be inserted into the molding cavity (5) and form oblique mounting holes (9a) on the baffle (9).

2. The core-pulling mechanism of an inner baffle injection mold according to claim 1, characterized in that, The slider (6) has a sliding connecting block (6b) inside. The piston rod (2a1) is fixedly connected to the connecting block (6b). The connecting block (6b) has abutment parts (6b1) on both sides. The abutment parts (6b1) can move and abut against the slider (6).

3. The core-pulling mechanism of an inner baffle injection mold according to claim 2, characterized in that, The fixed template (2) is provided with a retractable limiting block (8) inside. The limiting block (8) is located below the slider (6) and close to the side of the cylinder (2a). The limiting block (8) can move upward to abut against the slider (6). The limiting block (8) is provided with a guide slope (8a) on the side of the limiting block (8) close to the connecting block (6b). The connecting block (6b) can move outward to abut against the guide slope (8a).

4. The core-pulling mechanism of an inner baffle injection mold according to claim 1, characterized in that, The slider (6) has fixed blocks (6c) on both sides. The fixed blocks (6c) are fixedly connected to the fixed template (2). The bottom of the fixed blocks (6c) and the fixed template (2) form a sliding groove (6c 1). The two sides of the slider (6) are slidably connected to the sliding groove (6c 1).

5. The core-pulling mechanism of an inner baffle injection mold according to claim 1, characterized in that, The top plate (1) is provided with a feed inlet (1a), and the top plate (1) is provided with a flow divider (1b) connected to the feed inlet (1a). The flow divider (1b) is provided with a plurality of nozzles (1c), and the bottom of the nozzles (1c) is connected to the molding cavity (5).

6. The core-pulling mechanism of an inner baffle injection mold according to claim 1, characterized in that, The foot plate (4) is provided with a sliding 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) passes through the moving template (3) and extends to the bottom of the molding cavity (5).

Images