In-mold water gap cutting mold

Abstract

The utility model belongs to the technical field of large water gap molds of injection molding machines, and particularly relates to an in-mold water gap cutting mold which comprises a panel and a plate A fixed below the panel, a female mold core is mounted on the inner side of the lower end of the plate A, a male mold core is mounted below the female mold core, and a large water gap is arranged among the panel, the plate A and the female mold core. The product is formed through injection molding, the product is formed through the female mold core and the male mold core, the bottom plate is located at the bottom, and a movable needle plate is arranged above the bottom plate; a traditional mold is improved, a water gap cutting device is additionally arranged, and a water gap stub bar is separated from a product through cutting during injection molding. Through comparison, the die improves the production efficiency and the yield of products, and effectively avoids the risks that shearing is not in place and the products are scratched during manual cutting; the device has the advantages of saving labor cost, improving product quality, improving production efficiency and the like.

Description

Technical Field

[0001] This utility model belongs to the technical field of injection molding machine sprue molds, and in particular relates to an in-mold sprue cutting mold. Background Technology

[0002] In the injection molding industry, when there are multiple products or a single product with multiple entry points, using a common two-plate mold cold runner large gate injection solution will cause the sprue and the product to be connected together, requiring manual secondary cutting and processing after the product is demolded, which wastes manpower and resources.

[0003] In the injection molding process, molds that mold multiple products at the same time usually require manual trimming of sprue heads and manual sorting after the products are formed. Such products are prone to problems such as surface scratches, insufficient trimming with too much or too little glue, and mixing of sprue heads and products due to manual trimming, which wastes materials and time.

[0004] To address the aforementioned issues, this application proposes an in-mold gate cutting mold. Utility Model Content

[0005] The purpose of this invention is to provide an in-mold sprue cutter that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is an in-mold sprue cutting mold, including a panel and an A plate fixed below the panel. A female mold core is installed on the inner side of the lower end of the A plate, and a male mold core is installed below the female mold core. A large sprue is provided between the panel, the A plate, and the female mold core. It also includes a product and a sprue sprue head to be injection molded. The product is formed by the female mold core and the male mold core. It also includes a bottom plate located at the bottom. A movable pin plate is provided above the bottom plate. An ejector pin for demolding the product and the sprue sprue head is fixed on the pin plate. A cutting block for cutting the product and the sprue sprue head is movably installed in the male mold core. A single-acting hydraulic cylinder is installed on the bottom plate to drive the cutting block to cut the product and the sprue sprue head.

[0008] Furthermore, a cutting edge plate is slidably connected to the mounting base of the male mold core, the cutting edge block is fixed on the cutting edge plate, and a spring is provided between the cutting edge plate and the mounting base.

[0009] Furthermore, a push rod is fixed to the output end of the single-acting hydraulic cylinder, and the top of the push rod contacts the blade plate. The single-acting hydraulic cylinder drives the blade block to perform a cutting action after pressing the blade plate with the push rod.

[0010] Furthermore, the blade block, blade plate, and push rod are reset by springs.

[0011] Furthermore, the upper end of the ejector pin is located in the male mold core and its top contacts the bottom of the product and the sprue head.

[0012] Furthermore, the ejector pin also penetrates the blade plate and slides inside it.

[0013] This utility model has the following beneficial effects: It improves upon traditional molds by adding a sprue-cutting device, which separates the sprue from the product during injection molding. By comparison, the mold of this application improves production efficiency and product yield, effectively avoiding risks such as incomplete cutting and product scratches during manual cutting; it also offers advantages such as saving labor costs, improving product quality, and increasing production efficiency.

[0014] 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

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0018] Figure 3 for Figure 1 Enlarged structural diagram of part A in the middle;

[0019] The attached diagram lists the components represented by each number as follows:

[0020] In the diagram: 1. Panel; 2. A plate; 3. Female mold core; 4. Product; 5. Male mold core; 6. Cutting block; 7. Spring; 8. Cutting edge plate; 9. Ejector pin; 10. Sprue head; 11. Ejector rod; 12. Single-acting hydraulic cylinder; 13. Needle plate; 14. Large sprue; 15. Base plate. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating 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] Please see Figure 1-2 As shown, this utility model is an in-mold sprue mold, including a panel 1 and an A-plate 2 fixed below the panel 1. A female mold core 3 is installed on the inner side of the lower end of the A-plate 2, and a male mold core 5 is installed below the female mold core 3. A large sprue 14 is provided between the panel 1, the A-plate 2, and the female mold core 3. It also includes a product 4 and a sprue head 10 that are injection molded. The product 4 is formed by the female mold core 3 and the male mold core 5. It also includes a bottom plate 15 located at the bottom, and a movable needle plate 13 is provided above the bottom plate 15. The mold 13 is fixedly equipped with ejector pins 9 for demolding product 4 and sprue head 10. The ejection point of ejector pin 9 needs to cover product 4 and product 4 at the same time to ensure synchronous ejection after the two are cut. The male mold core 5 is movably installed with a cutting block 6 for cutting product 4 and sprue head 10. The cutting block 6 can be round, rectangular, strip, etc., to adapt to the cutting of different products 4 and sprue head 10 after molding. The base plate 15 is equipped with a single-acting hydraulic cylinder 12 that drives the cutting block 6 to cut product 4 and sprue head 10.

[0024] In this embodiment, a blade plate 8 is slidably connected to the mounting base of the male mold core 5, the blade block 6 is fixed on the blade plate 8, and a spring 7 is provided between the blade plate 8 and the mounting base. In this embodiment, the blade plate 8 not only fixes the blade block 6 but also plays a guiding role to ensure the stable movement of the blade block 6.

[0025] In this embodiment, the output end of the single-acting hydraulic cylinder 12 is fixed with a push rod 11, and the top of the push rod 11 contacts the blade plate 8. After the single-acting hydraulic cylinder 12 squeezes the blade plate 8 through the push rod 11, it drives the blade block 6 to achieve the cutting action. In this embodiment, the automatic cutting is driven by the single-acting hydraulic cylinder 12, which is more efficient than manual cutting and can ensure consistency and quality.

[0026] In this embodiment, the blade block 6, the blade plate 8, and the push rod 11 are reset by the spring 7. Since the push rod 11 and the blade plate 8 are connected by contact, the single-acting cylinder 12 pushes out the blade block 6, and then the spring 7 drives the blade block 6 to reset. At the same time, it does not affect the ejection of the ejector pin 9. The fit between the structures is high.

[0027] In this embodiment, the upper end of the ejector pin 9 is located in the male mold core 5 and its top is in contact with the bottom of the product 4 and the sprue head 10. Before the product 4 and the sprue head 10 are formed, the ejector pin 9 is located at the bottom of the mold groove of the male mold core 5 to ensure the structural integrity of the product 4 and the sprue head 10.

[0028] The ejector pin 9 also penetrates the blade plate 8 and slides inside it. In this embodiment, the penetration and cooperation between the blade plate 8 and the ejector pin 9 can prevent interference between the blade block 6 and the ejector pin 9 during use, resulting in a highly compact structure.

[0029] One specific application of this embodiment is: the present invention is arranged according to... Figure 1 After assembly, product 4 is formed by injection molding. The single-acting hydraulic cylinder 12 outputs to drive the ejector rod 11 and the cutting plate 8 forward, thereby driving the cutting block 6 to cut and separate product 4 and sprue head 10. At this time, the spring 7 is compressed. After the cutting is completed, the single-acting hydraulic cylinder 12 is unloaded, and under the action of the spring 7, the cutting block 6, the cutting plate 8, and the ejector rod 11 are reset. The panel 1, A plate 2, and female mold core 3 open the mold forward. At this time, the needle plate 13 moves forward, driving the ejector pin 9 to push the sprue head 10 and product 4 out of the male mold core 5. Then, under the action of the robot, product 4 and product 4 are taken out and sorted. Then the needle plate 13 drives the ejector pin 9 to reset, waiting for the next mold to open and repeating the above action process.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., 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, the 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.

[0031] 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 utility model 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. An in-mold sprue mold, comprising a panel (1) and an A-plate (2) fixed below the panel (1), wherein a female mold core (3) is installed on the inner side of the lower end of the A-plate (2), and a male mold core (5) is installed below the female mold core (3), and a large sprue (14) is provided between the panel (1), the A-plate (2), and the female mold core (3), and further comprising a product (4) formed by injection molding and a sprue head (10), wherein the product (4) is formed by the female mold core (3) and the male mold core (5), characterized in that: It also includes a base plate (15) located at the bottom, a movable pin plate (13) is provided above the base plate (15), an ejector pin (9) is fixed on the pin plate (13) to demold the product (4) and the sprue head (10), a cutting block (6) is movably installed in the male mold core (5) to cut the product (4) and the sprue head (10), and a single-acting hydraulic cylinder (12) is installed on the base plate (15) to drive the cutting block (6) to cut the product (4) and the sprue head (10).

2. The in-mold gate cutting mold according to claim 1, characterized in that: A blade plate (8) is slidably connected to the mounting base of the male mold core (5), the blade block (6) is fixed on the blade plate (8), and a spring (7) is provided between the blade plate (8) and the mounting base.

3. The in-mold gate cutting mold according to claim 2, characterized in that: The output end of the single-acting cylinder (12) is fixed with a push rod (11), and the top of the push rod (11) contacts the blade plate (8). The single-acting cylinder (12) drives the blade block (6) to perform the cutting action after squeezing the blade plate (8) through the push rod (11).

4. The in-mold gate cutting mold according to claim 3, characterized in that: The blade block (6), blade plate (8), and push rod (11) are reset by spring (7).

5. The in-mold gate cutting mold according to claim 1, characterized in that: The upper end of the ejector pin (9) is located in the male mold core (5) and its top is in contact with the bottom of the product (4) and the sprue head (10).

6. The in-mold gate cutting mold according to claim 5, characterized in that: The ejector pin (9) also penetrates the blade plate (8) and slides inside it.

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