Die for plug production

Abstract

The utility model belongs to the technical field of dies, and particularly relates to a die for plug production. Comprising a bottom plate, a lower mold is installed on the upper side of the bottom plate, a curved cooling hole is formed in the lower mold, and the two ends of the curved cooling hole penetrate through the left side and the right side of the lower mold correspondingly; an upper mold is installed on the lower side of the top plate, a cavity is formed in the inner side of the lower mold and the upper mold after the lower mold and the upper mold are attached, and an injection opening communicated with the cavity is formed in the upper side of the top plate; the assembling mechanism comprises a communicating pipe which is fixedly assembled to the end, away from the lower die, of the connecting pipe in a communicating mode, valves are arranged on the front and rear sides of the communicating pipe, and quick connectors are arranged at the front and rear ends of the communicating pipe. The cooling device is simple in structure and reasonable in design, and can be connected with an external air injection device through the quick connector during use, the air injection device and the electric heating rod do not need to be started after cooling, the curved cooling hole can be dried, and water stain residues are prevented from causing internal corrosion of the lower die and affecting the service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a mold for producing plugs. Background Art

[0002] SAE plugs are mainly used to connect to electrical equipment. SAE plugs follow the standard design of the American Automobile Association (SAE). When used, they are usually suitable for connecting small-power DC devices, such as solar panels and automobiles. Injection molds are used in the production of SAE plugs.

[0003] In order to accelerate the molding speed of the cavity, the mold in the prior art usually uses cooling water to cool the mold. However, after processing is completed, water is likely to remain inside the water channel of the mold. Long-term residual water stains can easily cause corrosion inside the mold and reduce the service life of the mold. Utility Model Content

[0004] The purpose of the utility model is to provide a mold for plug production, which can be connected to an external jet device by a quick connector when in use. The jet device and the electric heating rod can be started without cooling down, and the curved cooling holes can be dried to avoid water stains remaining inside the lower mold and affecting the service life.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:

[0006] A mold for plug production, comprising

[0007] A bottom plate, a lower mold is mounted on the upper side of the bottom plate, a curved cooling hole is opened inside the lower mold, and two ends of the curved cooling hole respectively pass through the left and right sides of the lower mold;

[0008] A top plate, wherein an upper mold is installed on the lower side of the top plate, and a cavity is formed inside the lower mold after the lower mold and the upper mold are attached to each other, and an injection port connected to the cavity is provided on the upper side of the top plate;

[0009] There are two connecting pipes, which are fixedly installed on the left and right sides of the lower mold respectively, and correspond to the two end positions of the curved cooling hole respectively. The two connecting pipes are installed with assembly mechanisms on the side away from each other. Quick connectors are provided at the front and rear ends of the connecting pipe. An electric heating rod is vertically installed on the rear side of the left connecting pipe. The quick connector on the left rear side is connected to the air outlet end of the external jet device.

[0010] As a preferred technical solution, the lower mold is provided with a first assembly groove on both the front and rear sides, and the upper mold is provided with a second assembly groove on both the front and rear sides. The two first assembly grooves are fixedly installed with convex parts, and the two second assembly grooves are fixedly installed with concave parts connected to the convex parts.

[0011] As a preferred technical solution, threaded holes are provided on both the left and right sides of the top of the top plate, cylinders are threadedly connected inside the two threaded holes, and rings are fixedly installed on the tops of the two cylinders.

[0012] The beneficial effects of the utility model are:

[0013] When in use, the curved cooling hole is used to make the cooling water flow move in a curve inside the lower mold, which has a larger contact area with the lower mold, higher heat exchange efficiency and good cooling effect. When cooling is not required, an external jet device is used to send gas into the curved cooling hole. After the gas is heated by the electric heating rod, the inner wall of the curved cooling hole can be quickly dried, with high water stain removal efficiency, avoiding water residue causing internal corrosion of the lower mold, which in turn affects the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by way of non-limiting embodiments given in the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0017] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the utility model;

[0018] Figure 4 This is a rear view structural diagram of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the assembly of the convex and concave parts of the utility model.

[0020] Figure numerals: bottom plate 1, lower mold 11, curved cooling hole 12, top plate 2, upper mold 21, injection port 22, convex part 221, concave part 23, threaded hole 24, cylinder 25, ring 26, connecting pipe 3, assembly mechanism 31, connecting pipe 32, valve 321, quick connector 33, electric heating rod 34. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-5 As shown, the utility model is a mold for producing a plug, comprising

[0023] The bottom plate 1 has a lower mold 11 mounted on the upper side thereof. The lower mold 11 has a curved cooling hole 12 formed inside. The two ends of the curved cooling hole 12 pass through the left and right sides of the lower mold 11 respectively.

[0024] The top plate 2 has an upper mold 21 mounted on its lower side. The lower mold 11 and the upper mold 21 are fitted together to form a cavity. An injection port 22 communicating with the cavity is provided on the top plate 2.

[0025] There are two connecting pipes 3, which are fixedly installed on the left and right sides of the lower mold 11 and correspond to the two ends of the curved cooling hole 12. The two connecting pipes 3 are installed with an assembly mechanism 31 on the side away from each other.

[0026] The assembly mechanism 31 includes a connecting pipe 32, which is fixedly connected and assembled to the end of the connecting pipe 3 away from the lower mold 11. Valves 321 are provided on the front and rear sides of the connecting pipe 32, and quick connectors 33 are provided on the front and rear ends of the connecting pipe 32. When in use, the quick connectors 33 on the front side are respectively connected to the water inlet and the drain end of the external water circulation device, and the four valves 321 are all in a closed state. When the plug is injection molded, the two valves 321 connected to the external water circulation device are opened, and water can be sent into the curved cooling hole 12 through the water circulation device to cool the lower mold 11.

[0027] An electric heating rod 34 is vertically installed on the rear side of the left connecting pipe 32, and the left rear quick connector 33 is connected to the air outlet end of the external jet device; after the left rear quick connector 33 is connected to the air outlet end of the external jet device, when the lower mold 11 is cooled, the two rear valves 321 are both closed. After the injection molding is completed, when there is no need to cool down, the staff closes the two front valves 321 and opens the two rear valves 321 and starts the electric heating rod 34. The jet device sends the gas into the curved cooling hole 12 through the connecting pipe 32 and finally ejects it through the rear end of the right connecting pipe 32. During this period, the high-pressure gas can blow out the excess moisture inside the curved cooling hole 12. At the same time, after the gas is heated by the electric heating rod 34, the gas temperature is increased, and the inside of the curved cooling hole 12 can also be dried to achieve the purpose of rapid drying. After the drying is closed, the jet device, the two valves 321 and the electric heating rod 34 can be closed.

[0028] A first assembly groove is provided on the front and rear sides of the lower mold 11, and a second assembly groove is provided on the front and rear sides of the upper mold 21. A convex part 221 is fixedly installed inside the two first assembly grooves, and a concave part 23 connected to the convex part 221 is fixedly installed inside the two second assembly grooves. When the lower mold 11 and the upper mold 21 are fitted together, the convex part 221 can be inserted into the concave part 23, which plays a positioning role during fitting and increases the stability during the injection molding process. At the same time, when the upper mold 11 and the lower mold 11 need to be disassembled, the convex part 221 and the concave part 23 can be fixed with bolts, so that the mold can be taken out as a whole for position transfer by simply hoisting the top plate 2.

[0029] There are threaded holes 24 on both sides of the top of the top plate 2, and cylinders 25 are threadedly connected inside the two threaded holes 24. Rings 26 are fixedly installed on the top of the two cylinders 25; when there is no need to disassemble the upper mold 21 and the lower mold 11, the cylinders 25 can be rotated out, and when the upper mold 21 and the lower mold 11 need to be disassembled, the two cylinders 25 are rotated into the two threaded holes 24 respectively, and then connected to the two lifting rings 26 through a lifting device to transfer the mold position, which is convenient to operate.

[0030] The device is used as follows:

[0031] In the initial state, when the plug is injection-molded, the quick connector 33 on the left rear side is connected to the jet end of the external jet device, and the two quick connectors 33 on the front side are connected to the drain end and the water inlet end of the external water circulation device. The four valves 321 are all closed. When the lower mold 11 is cooled, the two front valves 321 are opened, and the water circulation device sends water into the curved cooling hole 12 through the left connecting pipe 3. The water flows along the internal structure of the curved cooling hole 12, presenting a curved shape with a large contact range with the lower mold 11, which can achieve a good cooling effect. After the water exchanges heat with the lower mold 11, it is discharged through the right connecting pipe 3 and re-enters the water circulation device. , the lower mold 11 is cooled by circulating cooling to improve the injection molding efficiency. After the subsequent injection molding is completed, the two front valves 321 and the water circulation device are closed, and the two rear valves 321 are opened, the electric heating rod 34 is started and the jet device is started. The outlet end of the jet device generates a high-pressure airflow, which is sent into the curved cooling hole 12 after being heated by the heating rod 34. The airflow runs along the internal structure of the curved cooling hole 12, first blowing out a part of the residual water stains through the rear end of the right connecting pipe 32. At the same time, the heated airflow can quickly dry the remaining water stains inside the curved cooling hole 12 to avoid the residual water stains causing internal corrosion of the lower mold 11 and affecting its service life.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.

Claims

1. A mold for plug production, characterized by: include A bottom plate (1), a lower mold (11) is mounted on the upper side of the bottom plate (1), a curved cooling hole (12) is provided inside the lower mold (11), and two ends of the curved cooling hole (12) respectively pass through the left and right sides of the lower mold (11); A top plate (2), an upper mold (21) is installed on the lower side of the top plate (2), a cavity is formed inside the lower mold (11) after the lower mold (21) is fitted together, and an injection port (22) communicating with the cavity is provided on the upper side of the top plate (2); Two connecting pipes (3) are provided. The two connecting pipes (3) are fixedly mounted on the left and right sides of the lower mold (11) and correspond to the two end positions of the curved cooling hole (12). The two connecting pipes (3) are both mounted with an assembly mechanism (31) on the side away from each other. The assembly mechanism (31) includes a connecting pipe (32), the connecting pipe (32) is fixedly connected and assembled to the end of the connecting pipe (3) away from the lower mold (11), valves (321) are provided on both the front and rear sides of the connecting pipe (32), and quick connectors (33) are provided on both the front and rear ends of the connecting pipe (32). An electric heating rod (34) is vertically installed on the rear side of the left side of the connecting pipe (32), and the quick connector (33) on the left rear side is connected to the air outlet end of the external air injection device.

2. A plug production mold according to claim 1, characterized in that: The lower mold (11) is provided with a first assembly groove on both the front and rear sides, and the upper mold (21) is provided with a second assembly groove on both the front and rear sides. A convex part (221) is fixedly installed inside the two first assembly grooves, and a concave part (23) connected to the convex part (221) is fixedly installed inside the two second assembly grooves.

3. The plug production mold according to claim 1, characterized in that: Threaded holes (24) are provided on both left and right sides of the top of the top plate (2), cylinders (25) are threadedly connected inside the two threaded holes (24), and rings (26) are fixedly installed on the tops of the two cylinders (25).

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