Injection mold capable of rapidly cooling

Abstract

The utility model provides an injection mold capable of rapidly cooling, which relates to the technical field of injection mold cooling systems, and comprises a first cooling waterway constructed on an upper mold core or a lower mold core and two first connecting waterways vertically constructed on the upper mold core or the lower mold core, the first connecting waterways are communicated with the first cooling waterway, and the second connecting waterways are communicated with the second cooling waterway. According to the mold, through the pipe joint, the first water pipe and the first water nozzle, the purposes that in the prior art, a mold is punched in a mold plate, and a sealing ring is arranged to be connected with the first connecting water path are achieved, and the problem that the sealing ring leaks water due to the high temperature and the too large cooling water pressure is solved; the effect of high-sealing connection is achieved, and the effect brings the advantage that the flowing speed of cooling liquid can be increased for the mold, and the purpose of achieving rapid cooling of the mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold cooling systems, and particularly relates to an injection mold capable of quickly cooling down. Background Art

[0002] Generally, a plastic mold is composed of a moving mold (upper mold) and a fixed mold (lower mold). The moving mold is installed on the moving template of an injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the moving mold and the fixed mold are closed to form a gating system and a cavity. When the mold is opened, the moving mold and the fixed mold are separated to take out the plastic product.

[0003] In the existing technology, for a mold such as Figures 1 to 5 , the moving mold (upper mold) is composed of a panel 1, an upper template 2, an upper mold core 3, etc.; the fixed mold (lower mold) is composed of a bottom plate 4, square iron 5, ejector plates (face ejector plate, bottom ejector plate) 6, a lower template 7, a lower mold core 8, etc.; and cooling systems 9 are constructed on both the upper mold core and the lower mold core to cool and form the plastic product.

[0004] When injecting some products, such as products made of PEEK plastic particles, they need to be plasticized at high temperature and then quickly cooled after being injected into the mold. The simplest way to quickly cool is to increase the flow rate of the coolant. However, high-speed and high-pressure coolant is very likely to cause leakage at the waterway connection between the upper and lower mold cores and the upper and lower templates (an overflow pressure seal ring is generally used at this place, and the high-temperature mold cores and templates are likely to cause the seal ring to age rapidly, so the sealing performance is not good). To solve the above problems, the present application improves the cooling system of the existing technology mold and provides an injection mold capable of quickly cooling down. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide an injection mold capable of quickly cooling down for the deficiencies of the existing technology. By using a pipe joint, a first water pipe, and a first water nozzle to replace the purpose of the existing technology mold of drilling holes in the template and connecting the first connecting waterway through a seal ring, the problem of leakage caused by the seal ring due to high temperature and excessive cooling water pressure is avoided, and the effect of highly sealed connection is achieved. This effect can bring the benefit of enabling the mold to increase the flow rate of the coolant and solve the problem of quickly cooling down the mold.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: an injection mold capable of quickly cooling down, including a first cooling waterway constructed on the upper mold core or the lower mold core and two first connecting waterways vertically constructed on the upper mold core or the lower mold core. The first connecting waterway is communicated with the first cooling waterway, and a pipe joint is connected to the mouth of the first connecting waterway.

[0007] The pipe joint is connected to the mouth of the first connecting waterway by means of threads, and the connection part of the pipe joint is wrapped with Teflon tape.

[0008] The other end port of the pipe joint is connected with a first water pipe, and the other end of the pipe is connected with a first water nozzle.

[0009] Preferably, a second cooling waterway is further constructed on the upper template and the lower template, and the mouth of the second cooling waterway is threadedly connected with a second water nozzle.

[0010] Preferably, a second water pipe is communicated between the first water nozzle and the second water nozzle located in the upper die part or the lower die part.

[0011] Preferably, avoidance grooves are constructed on both the upper template and the lower template.

[0012] Preferably, pipeline connection marks are drawn on the side walls of the upper template and the lower template.

[0013] Preferably, the safety distances between the first cooling waterway, the first connecting waterway, and the second cooling waterway from the cavity are greater than 5 mm.

[0014] Preferably, a water well communicated with the first cooling waterway is constructed on the upper die core or the lower die core, a water isolation sheet is knocked in the water well, and the mouth of the water well is blocked with an aluminum plug.

[0015] Preferably, the water isolation sheet is made of aluminum material, one end abuts against the aluminum plug, and the other end is provided with a notch.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) In the present utility model, the pipe joint, the first water pipe, and the first water nozzle are used to replace the purpose of the existing technology in which the mold punches holes in the template and connects the first connecting waterway by setting a sealing ring, avoiding the problem of water leakage caused by the sealing ring due to high temperature and excessive cooling water pressure, achieving the effect of highly sealed connection, which can bring the benefit of accelerating the flow rate of the cooling liquid for the mold and solving the problem of realizing rapid cooling of the mold.

[0018] (2) In the present utility model, by arranging the second cooling waterway on the upper template and the lower template, the upper template and the lower template can also be cooled by the cooling liquid, further reducing the temperature around the upper die core and the lower die core, and achieving the effect of rapid cooling.

[0019] (3) In the present utility model, by providing a water well, it is equivalent to opening a hole communicating with the first cooling water path in the vertical direction. And in order to enable the (water well) hole to achieve the effect of water entering from one side and flowing out from the other side, a water isolation sheet is provided. The water isolation sheet can block the cooling water path, so that water enters from one side of the water well, then passes through the notch and returns to the first cooling pipeline from the other side. In this way, the water can cool the mold core part in the vertical direction, further enhancing the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structure schematic diagram of a prior art mold;

[0021] Figure 2 is a three-dimensional view of the upper template and the upper mold core of a prior art mold;

[0022] Figure 3 is a layout diagram of the cooling system water path of the upper mold core part of a prior art mold;

[0023] Figure 4 is a three-dimensional view of the lower template and the lower mold core of a prior art mold;

[0024] Figure 5 is a layout diagram of the cooling system water path of the lower mold core part of a prior art mold;

[0025] Figure 6 is a three-dimensional structure schematic diagram of the present utility model;

[0026] Figure 7 is a three-dimensional view of the upper template and the upper mold core of the present utility model;

[0027] Figure 8 is a layout diagram of the cooling system water path of the upper template and the upper mold core part of the present utility model;

[0028] Figure 9 is a three-dimensional view of the lower template and the lower mold core of the present utility model;

[0029] Figure 10 is a layout diagram of the cooling system water path of the lower template and the lower mold core part of the present utility model;

[0030] Figure 11 of the present utility model Figure 9 enlarged view of part A.

[0031] In the figure: 1, panel; 2, upper template; 3, upper die core; 4, bottom plate; 5, square iron; 6, ejector plate; 7, lower template; 8, lower die core; 9, cooling system; 10, first cooling water channel; 11, first connecting water channel; 12, pipe joint; 13, first water pipe; 14, first water nozzle; 15, second cooling water channel; 16, pipeline connection mark; 17, second water nozzle; 18, second water pipe; 19, avoidance groove; 20, water well; 21, water isolation sheet; 22, aluminum plug; 23, notch. Specific implementation mode

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0035] Embodiment 1

[0036] Such as Figures 6 to 11As shown in the figure, this embodiment provides an injection mold that can quickly cool down, including a first cooling waterway 10 constructed on the upper mold core 3 or the lower mold core 8, and two first connecting waterways 11 vertically constructed on the upper mold core 3 or the lower mold core 8. The first connecting waterway 11 is communicated with the first cooling waterway 10. It should be noted that the waterway here refers to the holes drilled in the mold core iron block. The mouth of the first connecting waterway 11 is connected with a pipe joint 12. The pipe joint 12 is connected to the mouth of the first connecting waterway 11 by a threaded method, and the joint of the pipe joint 12 is wrapped with raw tape. The other end port of the pipe joint 12 is connected with a first water pipe 13, and the other end of the pipe is connected with a first water nozzle 14 (specifically combined with Figure 7 and Figure 8 or Figure 9 and Figure 10 for comparison, and here in order to show the layout of the waterway in the mold core and the template, so some figures use dotted lines to show the hidden parts such as Figure 2 、 Figure 4 、 Figure 7 、 Figure 9 ),; In this application, the pipe joint 12, the first water pipe 13, and the first water nozzle 14 are used to replace the purpose of the existing technology of punching holes in the template and connecting the first connecting waterway 11 by setting a sealing ring, avoiding the problem of water leakage caused by the sealing ring due to high temperature and excessive cooling water pressure (the sealing performance of threaded connection is far better than the overflow pressure means of the mold sealing ring structure), achieving the effect of highly sealed connection. This effect can bring the benefit of accelerating the flow rate of the coolant in the mold, and solve the problem of realizing the rapid cooling of the mold.

[0037] Please refer to Appendix Figure 7 、 Figure 8 and Appendix Figure 9 、 Figure 10 . In this embodiment, avoidance grooves 19 are constructed on both the upper template 2 and the lower template 7. By setting the avoidance grooves 19 in this application, the effect that the first water nozzle 14 and the first water pipe 13 pass through the upper template 2 and the lower template 7 can be achieved.

[0038] Embodiment Two

[0039] As Figures 6 to 10 shown, on the basis of the above technical solution, in another embodiment of this application, it further includes a second cooling waterway 15 constructed on the upper template 2 and the lower template 7. The mouth of the second cooling waterway 15 is threadedly connected with a second water nozzle 17. By setting the second cooling waterway 15 on the upper template 2 and the lower template 7 in this application, the upper template 2 and the lower template 7 can also be cooled by the coolant, further reducing the temperature around the upper mold core 3 and the lower mold core 8 (heat transfers quickly on metal. Reducing the temperature of the upper template 2 and the lower template 7 is to a certain extent reducing the temperature of the upper mold core 3 and the lower mold core 8, which can accelerate the cooling of the product), achieving the effect of rapid cooling.

[0040] Please refer to the attached drawings, Figure 8 and the attached Figure 9 , Figure 10 , in this embodiment, a second water pipe 18 is connected between the first water nozzle 14 and the second water nozzle 17 located on the upper mold or the lower mold. Pipeline connection marks 16 are drawn on the side walls of the upper template 2 and the lower template 7. By connecting the second water pipe 18, a water circuit can be formed in series between the upper mold core 3 and the upper template 2, reducing the number of external pipelines. Moreover, by setting the pipeline connection marks 16, it can clearly indicate which water nozzle the external pipeline is connected to, avoiding the problem of inconvenient mold clamping caused by too many external pipelines.

[0041] Embodiment Three

[0042] As Figures 9 to 11 shown, on the basis of the above technical solution, in another embodiment of the present application, the safety distance between the first cooling water circuit 10 and the first connection water circuit 11 and the second cooling water circuit 15 from the cavity is greater than 5 mm. Here, 5 mm refers to the minimum distance between the water hole of the water circuit and the outer walls such as the cavity and the screw hole, avoiding breakage caused by too small a distance under excessive water pressure. At the same time, water wells 20 communicating with the first cooling water circuit 10 are constructed on the upper mold core 3 and the lower mold core 8. A water isolation sheet 21 is knocked and embedded in the water well 20, and the mouth of the water well 20 is blocked by an aluminum plug 22. The water isolation sheet 21 is made of aluminum, with one end abutting against the aluminum plug 22 and the other end having a notch 23. Please refer to Figure 11 , when water (the mold coolant is mostly cooled by water and oil) moves on the first cooling water circuit 10, in order to make it have a cooling effect in the vertical direction, setting the water well 20 is equivalent to opening a hole communicating with the first cooling water circuit 10 in the vertical direction. And in order to make the hole (of the water well 20) have the effect of water entering from one side and flowing out from the other side, the water isolation sheet 21 is set. The water isolation sheet 21 can block the cooling water circuit, so that water enters from one side of the water well 20, then passes through the notch 23 and returns to the first cooling pipeline from the other side. In this way, the water can cool the mold core part in the vertical direction, further increasing the cooling effect, and the high-speed water flow can achieve the effect of rapid cooling.

[0043] Working Steps

[0044] Step 1: Please refer to 7 or Figure 9 , connect the external water pipe to the first water nozzle 14 at the "in" position of the pipeline connection mark 16, and connect the other first water nozzle 14 to the second water nozzle 17 at the "in" position of the pipeline connection mark 16 through the second water pipe 18, and then connect the other second water nozzle 17 to the external water pipe to export the heated hot water (it should be noted that a mold temperature controller is mostly used for mold cooling, so the external water pipes are basically connected to the mold temperature controller).

[0045] Step 2: Turn on the mold temperature controller. High-speed and low-temperature water reaches the first connecting waterway 11 and the first cooling waterway 10 through the first water nozzle 14 and the first water pipe 13. Since both the first connecting waterway 11 and the first cooling waterway 10 are holes formed on the upper mold core 3 or the lower mold core 8, they can play a role in rapid cooling. And when the water flows through the water well 20, the water enters from one side and flows out from the other side, achieving cooling in the height direction, further accelerating the cooling of the upper mold core 3 and the lower mold core 8, so that the product located in the cavities of the upper mold core 3 and the lower mold core 8 can achieve rapid cooling. To further achieve the effect of rapid cooling, after the water comes out of another first water nozzle 14, it can choose to use the second water pipe 18 to connect to the second water nozzle 17, or can be externally connected to the second water nozzle 17 alone. In this way, the water can cool the upper template 2 or the lower template 7 through the second cooling waterway 15, reducing the temperature of the upper template 2 and the lower template 7, and indirectly reducing the temperature of the upper mold core 3 or the lower mold core 8 (metal transfers heat very quickly). Thus, the function of rapid cooling is achieved.

[0046] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An injection mold capable of rapid cooling, comprising a first cooling water channel constructed on an upper mold core or a lower mold core and two first connecting water channels vertically constructed on the upper mold core or the lower mold core, wherein the first connecting water channel is connected to the first cooling water channel, characterized in that: The mouth of the first connecting water channel is connected with a pipe joint; The pipe joint is connected to the mouth of the first connecting water channel by threading, and the connection of the pipe joint is wrapped with raw tape; The other end of the pipe joint is connected to a first water pipe, and the other end of the first water pipe is connected to a first water nozzle.

2. The injection mold capable of rapid cooling according to claim 1, characterized in that: It also includes a second cooling water channel constructed on the upper mold plate and the lower mold plate, and a second water nozzle is threadedly connected to the mouth of the second cooling water channel.

3. The injection mold capable of rapid cooling according to claim 2, characterized in that: A second water pipe is connected between the first water nozzle and the second water nozzle located at the upper mold part or the lower mold part.

4. The injection mold capable of rapid cooling according to claim 1, characterized in that: Avoidance grooves are constructed on both the upper template and the lower template.

5. The injection mold capable of rapid cooling according to claim 1, characterized in that: Pipe connection marks are drawn on the side walls of the upper template and the lower template.

6. The injection mold capable of rapid cooling according to claim 2, characterized in that: The safety distance between the first cooling water channel, the first connecting water channel and the second cooling water channel and the cavity is greater than 5 mm.

7. The injection mold capable of rapid cooling according to claim 1, characterized in that: A water well connected to the first cooling water channel is constructed on the upper die core or the lower die core, a water barrier is hammered into the water well, and an aluminum plug is blocked at the mouth of the water well.

8. The injection mold capable of rapid cooling according to claim 7, characterized in that: The water-blocking sheet is made of aluminum material, one end of which abuts against the aluminum plug and the other end of which is provided with a notch.

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