In-mold hot cutting runner structure

Abstract

The utility model discloses an in-mold hot cutting runner structure which comprises an in-mold cutting assembly, a plate A and a plate B. A mold cavity is formed between the plate A and the plate B; the in-mold cutting assembly comprises in-mold multi-lamination pressurizing oil cylinders and a cutter, the cutter is located in the mold cavity, the output end of the first in-mold multi-lamination pressurizing oil cylinder is connected with the cutter, the cutter is used for cutting a product in the mold cavity, an insert matched with the cutter in shape is arranged on the inner side of the cutter, and the insert is fixedly connected with the plate B. Compared with the prior art, the in-mold multi-lamination pressurizing oil cylinder can drive the cutter to move up and down, so that a product is cut, manual later-stage processing is not needed, an opening is cut in the mold, the overall flatness of the product is higher, and the precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a hot-cut flow channel structure in a mold. Background Art

[0002] An injection mold is a mold with a hot-cut runner structure inside the mold. When in use, the material will enter the mold cavity. After the material is formed, it will form a corresponding product according to the shape of the mold cavity. Some products need to be cut or holed after formation to meet product requirements.

[0003] The existing cutting method generally takes the product out of the mold and uses manual cutting to form holes or openings on the product. However, this method requires the product to be fixed on a special fixture, and there are certain errors in the product after cutting, resulting in low overall product precision. In addition, the cut edge is not smooth enough and requires subsequent grinding, which is very cumbersome.

[0004] As for the products that need to be cut, there are also many specifications. Some products are thicker overall, and some are harder. As a result, the thrust of ordinary cylinders is insufficient and cutting cannot be performed. Therefore, it is very necessary to invent an in-mold cutting structure with high cutting ability. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a hot cutting flow channel structure in a mold. By setting a multi-layer booster cylinder and a cutter in a first mold, the product can be cut in the mold, thereby making the overall flatness of the product higher and improving the precision.

[0006] Technical solution: The utility model provides a hot-cut flow channel structure in a mold, including a mold body, the mold body including:

[0007] A plate and a B plate, wherein a mold cavity is formed between the A plate and the B plate;

[0008] The in-mold cutting assembly includes a first in-mold multi-layer pressurized oil cylinder and a cutter. The cutter is located in the mold cavity. The output end of the first in-mold multi-layer pressurized oil cylinder is connected to the cutter. The cutter is used to cut the product in the mold cavity. An insert with a shape matching the cutter is provided on the inner side of the cutter, and the insert is fixedly connected to the B plate.

[0009] Furthermore, it also includes an ejector pin, the top of which passes through the insert, and the bottom of which is located below the B plate and connected to the ejector pin plate.

[0010] Furthermore, a square iron is fixedly connected below the B plate, the ejector plate is located in the space formed by the B plate and the square iron, the bottom of the square iron is connected to a bottom plate, and the top of the A plate is connected to a top plate.

[0011] Furthermore, a feed port is provided on the A plate, and the feed port is communicated with the mold cavity.

[0012] Furthermore, it also includes a second in-mold multi-layer booster cylinder, the output end of which is located in the mold cavity and is fixedly connected to a sprue cutter, and the sprue cutter is located at the sprue of the mold body.

[0013] Furthermore, the oil inlet and outlet ports of the first in-mold multi-layered pressurized oil cylinder and the second in-mold multi-layered pressurized oil cylinder are both located outside the mold body.

[0014] Furthermore, the insert is fixed to the B plate by screws.

[0015] Furthermore, at least two groups of multi-layer booster cylinders are provided in the first mold.

[0016] Furthermore, the bottom ends of the first in-mold multi-layered booster cylinder and the second in-mold multi-layered booster cylinder are both fixed to the bottom plate by screws.

[0017] Furthermore, the nozzle cutter and the cutter are both located at the bottom of the mold cavity.

[0018] Beneficial effects:

[0019] 1. The multi-layer pressurized oil cylinder in the first mold of the utility model can drive the cutter to move up and down, so as to cut the product. The multi-layer pressurized oil cylinder in the first mold is a patented product with the characteristics of small size and large thrust. It can be adapted to a variety of different molds and can also be compatible with cutting high hardness or overall thick products. There is no need for manual cutting at a later stage. The opening is cut in the mold, and the overall flatness of the product is higher, the incision is smoother, and the precision is improved.

[0020] 2. By setting up a multi-layer booster cylinder in the first mold, this cylinder can generate a greater thrust without changing its own width, so that it can be assembled on a mold with a smaller internal space. In addition, due to its own high thrust, the cutter can cut the plastic parts to increase the scope of application.

[0021] 3. The nozzle cutter of the utility model is located at the nozzle of the mold body. Therefore, when the multi-layer booster cylinder in the second mold drives the nozzle cutter to rise, the nozzle can be cut.

[0022] 4. After the ejector pin of the utility model is raised, it can pass through the insert to eject the cut waste material, without the need for manual cleaning, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an internal schematic diagram of a hot-cut runner structure in a mold;

[0024] Figure 2 A schematic diagram of the positions of a mold body, ejector pin, square iron and ejector pin plate in a mold hot-cut runner structure;

[0025] Figure 3 A schematic diagram of the positions of the oil inlet and outlet ports and the mold body in a hot-cut runner structure in a mold;

[0026] Figure 4 It is a schematic diagram of the positions of the A plate, the B plate, the multi-layer booster cylinder and the square iron in the first mold in a hot-cut runner structure in the mold;

[0027] Figure 5 It is a schematic cross-sectional view of a mold body with a hot-cut runner structure in the mold;

[0028] Figure 6 This is a diagram of the internal structure of a mold with a hot-cut runner structure inside the mold.

[0029] In the figure: 1. mold body; 101. Plate A; 102. Plate B; 2. Multi-layered booster cylinder in the first mold; 3. Cutter; 5. Feed inlet; 6. Ejector; 7. Insert; 9. Gate cutter; 10. Multi-layered booster cylinder in the second mold; 11. Square iron; 12. Ejector plate; 13. Oil inlet and outlet; 14. Top plate; 15. Bottom plate. DETAILED DESCRIPTION

[0030] The utility model is described in detail below in conjunction with the accompanying drawings.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-6 A hot cutting runner structure in a mold includes a mold body 1, the mold body 1 includes an A plate 101 and a B plate 102, and a mold cavity is formed between the A plate 101 and the B plate 102; the mold cutting assembly includes a first in-mold multi-layer booster cylinder 2 and a cutter 3, the cutter 3 is located in the mold cavity, the output end of the first in-mold multi-layer booster cylinder 2 is fixedly connected to the cutter 3 through a connecting column and a screw, the cutter 3 is used to cut the product in the mold cavity, and an insert 7 matching the shape of the cutter 3 is arranged on the inner side of the cutter 3, the insert 7 is fixedly connected to the B plate 102, the bottom of the square iron 11 is connected to a bottom plate 15, and the top of the A plate 101 is connected to a top plate 14.

[0035] In this embodiment, if Figure 1 As shown, a feed port 5 is provided on the A plate 101, and the material enters the mold cavity through the feed port 5. At this time, the insert 7 is in close contact with the cutter 3 to prevent a large amount of material from flowing into the inner side of the cutter 3 to ensure the molding quality of the product. After the material is solidified into a product, the multi-layer booster cylinder 2 in the first mold can drive the cutter 3 to rise, exerting a higher thrust on the cutter 3, thereby cutting the product, and the cutter 3 can be set to a structure of any shape, such as a circular cutter can cut circular holes, a polygonal cutter can cut polygonal holes, etc., which is very convenient and does not require manual stamping processing at a later stage. Moreover, the opening is cut in the mold, and the overall flatness of the product is higher.

[0036] like Figure 1 , Figure 2 and Figure 5 As shown, the top of the ejector pin 6 passes through the insert 7, and the bottom of the ejector pin 6 is located below the B plate 102 and is connected to an ejector plate 12. A square iron 11 is fixedly connected below the B plate 102. The ejector plate 12 is located in the space formed by the B plate 102 and the square iron 11. The ejector plate 12 can be connected to an external machine ejection mechanism such as a cylinder, an electric cylinder, etc. When the product is cut by the cutter 3, the external machine ejection mechanism will drive the ejector pin 6 to rise through the ejector plate 12, so that the ejector pin 6 passes through the insert 7 to eject the cut waste, and there is no need for manual cleaning, which is more convenient.

[0037] Embodiment 2:

[0038] This embodiment is a further improvement of the embodiment 1. The main improvement is that the embodiment 1 cannot cut the nozzle of the mold when in use. In this embodiment, the above defects can be avoided. Specifically:

[0039] like Figure 1 and Figure 5 As shown, the output end of the second in-mold multi-layer booster cylinder 10 is located in the mold cavity and is fixedly connected to a sprue cutter 9, which is located at the sprue of the mold body 1. When the second in-mold multi-layer booster cylinder 10 drives the sprue cutter 9 to rise, the sprue can be cut, and the bottom ends of the first in-mold multi-layer booster cylinder 2 and the second in-mold multi-layer booster cylinder 10 are both fixed to the square iron 11 by screws, as shown in FIG. Figure 3 As shown, the oil inlet and outlet 13 of the first in-mold multi-layer booster cylinder 2 and the second in-mold multi-layer booster cylinder 10 are both located outside the mold body 1, and can be connected to the hydraulic control system to control the working status of the first in-mold multi-layer booster cylinder 2 and the second in-mold multi-layer booster cylinder 10. The sprue cutter 9 and the cutter 3 are initially located at the bottom of the mold cavity. Therefore, when the sprue cutter 9 and the cutter 3 rise, they will perform cutting operations.

[0040] Apart from this, this embodiment is exactly the same as Embodiment 1 and will not be described in detail here.

[0041] Embodiment 3:

[0042] like Figure 1 and Figure 5 As shown, there are at least two groups of multi-layer booster cylinders 2 in the first mold, and the multi-layer booster cylinders in the mold are application number 2023115638777. This cylinder can generate greater thrust without changing its own width, so that it can be assembled on a mold with a smaller internal space to perform cutting operations on injection molded parts.

[0043] Working principle: The multi-layer booster oil cylinder 2 in the first mold and the multi-layer booster oil cylinder 10 in the second mold are connected to the hydraulic control system. When the material in the mold cavity solidifies into a product, the multi-layer booster oil cylinder 2 in the first mold can drive the cutter 3 to rise, thereby cutting the product, and the shape of the cut will change according to the shape of the cutter 3. After cutting, the ejector 6 will rise upward under the action of the external machine ejection mechanism, so that the ejector 6 passes through the insert 7 to eject the cut waste, without the need for manual cleaning, which is more convenient. Moreover, the water inlet cutter 9 is located at the water inlet of the mold body 1. Therefore, when the multi-layer booster oil cylinder 10 in the second mold drives the water inlet cutter 9 to rise, the water inlet can be cut. The above-mentioned embodiment is only for illustrating the technical concept and characteristics of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A hot-cut flow channel structure in a mold, comprising a mold body (1), characterized in that: The mold body (1) comprises: A plate (101) and a plate (102), wherein a mold cavity is formed between the plate (101) and the plate (102); An in-mold cutting assembly comprises a first in-mold multi-layer pressurized oil cylinder (2) and a cutter (3), wherein the cutter (3) is located in a mold cavity, the output end of the first in-mold multi-layer pressurized oil cylinder (2) is connected to the cutter (3), and the cutter (3) is used to cut the product in the mold cavity. An insert (7) having a shape matching that of the cutter (3) is provided on the inner side of the cutter (3), and the insert (7) is fixedly connected to the B plate (102).

2. The in-mold hot-cut runner structure according to claim 1, characterized in that: It also includes an ejector pin (6), the top of which passes through the insert (7), and the bottom of which is located below the B plate (102) and connected to an ejector pin plate (12).

3. The in-mold hot-cut runner structure according to claim 2, characterized in that: A square iron (11) is fixedly connected below the B plate (102), the ejector plate (12) is located in a space formed by the B plate (102) and the square iron (11), the bottom of the square iron (11) is connected to a bottom plate (15), and the top of the A plate (101) is connected to a top plate (14).

4. The in-mold hot-cut runner structure according to claim 3, characterized in that: The A plate (101) is provided with a feed port (5), and the feed port (5) is communicated with the mold cavity.

5. The in-mold hot-cut runner structure according to claim 3 or 4, characterized in that: It also comprises a second in-mold multi-layer boosting oil cylinder (10), the output end of which is located in the mold cavity and is fixedly connected to a sprue cutter (9), and the sprue cutter (9) is located at the sprue of the mold body (1).

6. The in-mold hot-cut runner structure according to claim 5, characterized in that: The oil inlet and outlet ports of the first in-mold multi-layered pressurized oil cylinder (2) and the second in-mold multi-layered pressurized oil cylinder (10) are both located outside the mold body (1).

7. The in-mold hot-cut runner structure according to claim 1, characterized in that: The insert (7) is fixed on the B plate (102) by means of screws.

8. The in-mold hot-cut runner structure according to claim 1, characterized in that: At least two groups of multi-layered booster cylinders (2) are provided in the first mold.

9. The in-mold hot-cut runner structure according to claim 5, characterized in that: The bottom ends of the first in-mold multi-layered booster cylinder (2) and the second in-mold multi-layered booster cylinder (10) are both fixed to the bottom plate (15) by screws.

10. The in-mold hot-cut runner structure according to claim 5, characterized in that: The nozzle cutter (9) and the cutter (3) are both located inside the mold cavity.

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