Water cooling type plastic mold

Abstract

The utility model discloses a water cooling type plastic mould in the field of plastic moulds, which comprises an upper mould, a mould core plate, a mould cavity and a lower mould, the mould core plate is fixedly arranged on the top surface of the lower mould, the mould cavity is arranged on the top surface of the mould core plate through screws, the upper mould is movably arranged on the top surface of the mould core plate, and the mould cavity is arranged on the top surface of the mould core plate. A fixing shell is installed on the top face of the mold cavity through screws, positioning grooves are formed in the top face of the mold core plate and extend in the length direction of the mold core plate, water inlet pipes are installed in the positioning grooves, one ends of the water inlet pipes extend to the outside of the mold core plate along the positioning grooves, and the other ends of the water inlet pipes extend to the outside of the mold core plate along the positioning grooves. The other end of the water inlet pipe is provided with a communicated adapter pipe; according to the water cooling type plastic mold, plastic products can be rapidly cooled in a water cooling mode, the cooling speed of the plastic products can be greatly increased, and the cooling efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of plastic molds, in particular to a water-cooled plastic mold. Background Art

[0002] Plastic is a material composed of inorganic and organic elements. Plastic is molten at high temperatures and solid at low temperatures. In the production process of existing plastic products, two molds (upper mold and lower mold) are usually put together and the molten plastic is injected into the gap between them. After cooling and shaping, the required plastic product is formed. Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. Through the coordinated changes of the upper and lower molds and the auxiliary molding system of the mold, a series of plastic parts of different shapes and sizes can be processed. The mold is the mother of industry, and the plastic mold is a type of mold.

[0003] After plastic injection molding, the plastic product must be cooled to a certain temperature and fully solidified before demoulding. The speed of natural cooling of the mold is very slow, which affects the work efficiency. In order to improve production efficiency, a large number of heat dissipation holes are generally added directly to the mold. By using heat dissipation holes to discharge heat to achieve cooling, the cooling waiting time can be greatly reduced and the work efficiency can be improved. For example, the temperature of the plastic when it is injected into the mold is 220 degrees. It needs to be cooled to below 80 degrees before the product can be demoulded and taken out. If there are no heat dissipation holes and it is allowed to cool naturally, the cooling time may take dozens of minutes. By adding heat dissipation holes for heat dissipation, the cooling time can be controlled within a few minutes. However, for more complex plastic products, more heat dissipation holes need to be set, which will greatly increase the manufacturing cost of the injection mold, and the cooling effect may not be ideal. The cooling speed is still relatively slow and the cooling efficiency is relatively low by using heat dissipation holes. It still takes a few minutes to wait, and it is difficult to further shorten the cooling time. Utility Model Content

[0004] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a water-cooled plastic mold, which can effectively solve the technical problems that the existing plastic mold uses heat dissipation holes for cooling, resulting in slow cooling speed and low cooling efficiency.

[0005] The utility model solves the technical problem by adopting the following technical solution: a water-cooled plastic mold, comprising an upper mold, a mold plate, a mold cavity and a lower mold, wherein the mold plate is fixedly arranged on the top surface of the lower mold, the mold cavity is installed on the top surface of the mold plate by screws, the upper mold is movably arranged on the top surface of the mold plate, a fixed shell is installed on the top surface of the mold cavity by screws, a positioning groove is provided on the top surface of the mold plate, the positioning grooves are extended along the length direction of the mold plate, a water inlet pipe is installed inside the positioning groove, one end of the water inlet pipe extends along the positioning groove to the outside of the mold plate, a conductive transfer pipe is installed on the other end of the water inlet pipe, and an arc is provided on the surface of the transfer pipe An arc tube, one end of the arc tube is connected to the transfer tube, the other end of the arc tube extends to the interior of the fixed shell, a spray device is installed inside the fixed shell, a plurality of spray heads are arranged on the surface of the spray device, the plurality of spray heads are arranged and distributed along the circumferential direction of the spray device, a plurality of water outlet holes are arranged on the surfaces of the plurality of spray heads, a water pump is installed inside the spray device, a conductive threaded tube is arranged at one end of the water pump, a conductive water outlet pipe is arranged at the other end of the water pump, the threaded pipe passes through the spray device and extends to the interior of the fixed shell, the threaded tube is threadedly connected to the arc tube, and the water outlet pipe extends to the spray head and is threadedly connected to the spray head.

[0006] Furthermore, a fixing pin is provided on the side of the mold plate, and the adapter tube is connected to the mold plate via the fixing pin.

[0007] Furthermore, a positioning column is provided inside the mold plate, one end of which passes through the mold plate and extends to the inside of the lower mold, one end of which is fixedly connected to the lower mold, and the other end of which extends to the upper mold and is movably connected to the upper mold.

[0008] Furthermore, a fixing rod perpendicular to the lower mold is fixedly provided on the top surface of the lower mold, and the top surface of the fixing rod is connected to the surface of the mold core plate.

[0009] Furthermore, the top surface of the upper mold is provided with an injection port.

[0010] Furthermore, two positioning grooves are provided, and the positioning grooves are symmetrically distributed.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is a water-cooled plastic mold, which realizes efficient cooling of the inside of the mold by arranging structures such as a spraying device and a water pump, and pumps water through the water pump inside the spraying device, so that the external water source enters the threaded pipe through the water inlet pipe, the transfer pipe, and the arc pipe and flows into the water pump, and is further pumped by the water pump so that the water flows into the water outlet pipe, and is further sprayed out through the spray head and the water outlet hole, so that the plastic product can be quickly cooled by water cooling. Compared with the traditional cooling method using heat dissipation holes, the cooling speed of the plastic product can be greatly improved, and the cooling efficiency can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional diagram of a water-cooled plastic mold of the utility model;

[0013] Figure 2 This is a front view of a water-cooled plastic mold of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of a water-cooled plastic mold of the utility model;

[0015] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0016] Figure 5 This is a schematic structural diagram of a water-cooling type plastic mold spraying device of the utility model;

[0017] Figure 6 The utility model is a schematic structural diagram of a water pump for a water-cooled plastic mold.

[0018] Numbers in the figure:

[0019] 1-upper mold; 2-lower mold; 3-mold plate; 4-injection port; 5-positioning column; 6-mold cavity; 7-fixing shell; 8-fixing pin; 9-fixing rod; 10-water inlet pipe; 11-arc pipe; 12-positioning groove; 13-transfer pipe; 14-spraying device; 15-spraying head; 16-water outlet hole; 17-threaded pipe; 18-water pump; 19-water outlet pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 6 As shown, a water-cooled plastic mold comprises an upper mold 1, a mold plate 3, a model cavity 6 and a lower mold 2, wherein the mold plate 3 is fixedly arranged on the top surface of the lower mold 2, the model cavity 6 is installed on the top surface of the mold plate 3 by screws, the upper mold 1 is movably arranged on the top surface of the mold plate 3, and a fixed shell 7 is installed on the top surface of the model cavity 6 by screws, a positioning groove 12 is provided on the top surface of the mold plate 3, and the positioning grooves 12 are extended along the length direction of the mold plate 3, a water inlet pipe 10 is installed inside the positioning groove 12, one end of the water inlet pipe 10 extends to the outside of the mold plate 3 along the positioning groove 12, and a conductive transfer pipe 13 is installed on the other end of the water inlet pipe 10, and an arc tube 11 is arranged on the surface of the transfer pipe 13, one end of the arc tube 11 is conductive with the transfer pipe 13, and the other end of the arc tube 11 extends to the inside of the fixed shell 7, and a spray nozzle is installed inside the fixed shell 7 A spray device 14 is provided, and a plurality of spray heads 15 are arranged on the surface of the spray device 14, and the plurality of spray heads 15 are arranged and distributed along the circumferential direction of the spray device 14, and a plurality of water outlet holes 16 are provided on the surfaces of the plurality of spray heads 15, so as to ensure that the cooling water can be evenly and effectively distributed around the mold cavity 6, thereby improving the cooling speed of the plastic product. In addition, the plurality of spray heads 15 and the water outlet holes 16 on the spray device 14 can further refine the distribution of the cooling water and enhance the cooling effect. A water pump 18 is installed inside the spray device 14, and a conductive threaded pipe 17 is provided at one end of the water pump 18, and a conductive water outlet pipe 19 is provided at the other end of the water pump 18, and the threaded pipe 17 passes through the spray device 14 and extends to the interior of the fixed shell 7, and the threaded pipe 17 is threadedly connected to the arc tube 11, and the water outlet pipe 19 extends to the spray head 15 and is threadedly connected to the spray head 15.

[0022] A fixing pin 8 is provided on the side of the mold plate 3, and the transfer tube 13 is connected to the mold plate 3 through the fixing pin 8. By providing the fixing pin 8, it is convenient to fix the transfer tube 13 to prevent the transfer tube 13 from loosening during the mold closing process. A positioning column 5 is provided inside the mold plate 3, one end of the positioning column 5 passes through the mold plate 3 and extends to the inside of the lower mold 2, one end of the positioning column 5 is fixedly connected to the lower mold 2, and the other end of the positioning column 5 extends to the upper mold 1 and is movably connected to the upper mold 1. The top surface of the lower mold 2 is fixedly provided with A fixing rod 9 is provided which is perpendicular to the lower mold 2, and the top surface of the fixing rod 9 is connected to the surface of the mold core plate 3. By setting the fixing rod 9, the structural strength of the mold is further enhanced. An injection port 4 is provided on the top surface of the upper mold 1. The injection port 4 is provided on the top surface of the upper mold 1 to facilitate the injection molding operation. The design position of the injection port 4 is reasonable to ensure that the plastic material can smoothly enter the mold cavity. Two positioning grooves 12 are provided, and the positioning grooves 12 are symmetrically distributed. By setting the positioning grooves 12, the water inlet pipe 10 can be easily arranged.

[0023] When a water-cooled plastic mold of this embodiment is used, the plastic mold is fixed on the injection molding machine, and the molten plastic is poured into the injection port 4 by the injection molding machine, so that the plastic is injected into the mold cavity 6. The molten plastic is injection molded by the mold closing action of the injection molding machine. After the plastic product is injection molded, water is pumped by the water pump 18 inside the spraying device 14, so that the external water source enters the threaded pipe 17 through the water inlet pipe 10, the transfer pipe 13, and the arc pipe 11 and flows into the water pump 18. After the water pump 18 Further extraction causes the water to flow into the water outlet pipe 19, and further the water is sprayed out through the spray head 15 and the water outlet 16, so that the water is sprayed onto the surface of the plastic product, and the plastic product is quickly cooled by water cooling. The temperature of the water spray is moderate to avoid excessive temperature difference with the plastic product, and the amount and frequency of the water spray can be properly controlled. After the water spray is cooled, the plastic product is taken out by a robot or manually using a clamp, and the moisture on the surface of the plastic product is wiped or dried in time to prevent the formation of water stains or watermarks.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A water-cooled plastic mold, comprising an upper mold, a mold plate, a mold cavity and a lower mold, wherein the mold plate is fixedly arranged on the top surface of the lower mold, the mold cavity is installed on the top surface of the mold plate by screws, the upper mold is movably arranged on the top surface of the mold plate, a fixing shell is installed on the top surface of the mold cavity by screws, and a positioning groove is opened on the top surface of the mold plate, and the positioning grooves extend along the length direction of the mold plate, characterized in that: A water inlet pipe is installed inside the positioning groove, one end of the water inlet pipe extends along the positioning groove to the outside of the mold plate, and a conductive switching pipe is installed at the other end of the water inlet pipe. An arc tube is provided on the surface of the switching pipe, one end of the arc tube is connected with the switching pipe, and the other end of the arc tube extends to the inside of the fixed shell, and a spray device is installed inside the fixed shell, and a plurality of spray heads are provided on the surface of the spray device, and the plurality of spray heads are arranged and distributed along the circumferential direction of the spray device, and a plurality of water outlet holes are provided on the surfaces of the plurality of spray heads, and a water pump is installed inside the spray device, a conductive threaded pipe is provided at one end of the water pump, and a conductive water outlet pipe is provided at the other end of the water pump, and the threaded pipe passes through the spray device and extends to the inside of the fixed shell, and the threaded pipe is threadedly connected to the arc tube, and the water outlet pipe extends to the spray head and is threadedly connected to the spray head.

2. A water-cooled plastic mold according to claim 1, characterized in that: A fixing pin is provided on the side of the mold plate, and the transfer tube is connected to the mold plate via the fixing pin.

3. A water-cooled plastic mold according to claim 1, characterized in that: A positioning column is arranged inside the mold plate, one end of which passes through the mold plate and extends to the inside of the lower mold, one end of which is fixedly connected to the lower mold, and the other end of which extends to the upper mold and is movably connected to the upper mold.

4. The water-cooled plastic mold according to claim 1, characterized in that: A fixing rod perpendicular to the lower mold is fixedly arranged on the top surface of the lower mold, and the top surface of the fixing rod is connected to the surface of the mold core plate.

5. A water-cooled plastic mold according to any one of claims 1 to 4, characterized in that: The top surface of the upper mold is provided with an injection port.

6. A water-cooled plastic mold according to any one of claims 1 to 4, characterized in that: Two positioning grooves are provided, and the positioning grooves are symmetrically distributed.

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