Controllable, efficient and quick-heating and quick-cooling mold structure

Abstract

The invention relates to the technical field of molds, in particular to a controllable, efficient and quick-heating and quick-cooling mold structure which comprises a mold body, an inner cavity is formed in the mold body, and a cooling and heating assembly is arranged on the mold body. The cold and hot assembly comprises a water inlet pipe fixedly installed at the bottom of the mold body and a backflow pipe fixedly installed at the top of the mold body, the water inlet pipe and the backflow pipe communicate with the inner cavity, a three-way valve is arranged at the end of the water inlet pipe, and a hot water pipe is fixedly installed on one pipe body of the three-way valve. A first pump body is fixedly installed at the end of the hot water pipe, a suction pipe is fixedly installed at the water inlet end of the first pump body, a heat preservation barrel is fixedly installed at the tail end of the suction pipe, a plurality of second temperature control electric heaters are fixedly installed on the inner wall of the heat preservation barrel, and a cold water pipe is fixedly installed on the remaining pipe body of the three-way valve. According to the invention, efficient quick heating and quick cooling operation can be carried out, and injection molding operation can be smoothly carried out.

Description

Technical Field

[0001] The invention relates to the field of mold technology, in particular to a controllable high-efficiency rapid heating and cooling mold structure. Background Art

[0002] Moulds are various molds and tools used in industrial production to obtain the required products by methods such as injection molding, blow molding, extrusion, die-casting or forging, smelting, and stamping. There are many types of moulds on the market, which can be divided into many types according to different molding processes.

[0003] In the injection molding process, the injection molding process is completed by passing the molten raw liquid into the mold and waiting for the molten raw liquid to cool and form. After the molten raw liquid is passed into the mold, since the mold is a metal structure, its own temperature is relatively low, and the temperature difference between the mold and the molten raw liquid is large. When the temperature of the raw liquid drops, its fluidity in the mold is poor, which will affect the raw liquid from filling the entire molding cavity, further causing the injection molding to fail to proceed normally.

[0004] When the molten stock liquid is fully filled into the mold, the cooling process of the molten stock liquid is also relatively slow. At this time, the conventional operation is generally to pass the cooling medium into the mold to achieve rapid cooling, and after the cooling medium exchanges heat with the molten stock liquid in the molding chamber, the cooling molding is achieved. However, this operation will cause the medium after heat exchange to remain in the mold, and the temperature of this part of the medium after heat exchange is low. When the injection molding operation is performed again, it cannot be guaranteed that the temperature of this part of the cooling medium and the temperature in the mold are close to the temperature of the molten stock liquid, which affects the effect of rapid heating and cooling. In view of this, we propose a controllable and efficient rapid heating and cooling mold structure. Summary of the invention

[0005] The object of the present invention is to provide a controllable, efficient, rapid heating and cooling mold structure to solve the defects mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A controllable, efficient, rapid heating and cooling mold structure comprises a mold body, an inner cavity is arranged inside the mold body, a hot and cold assembly is arranged on the mold body, the hot and cold assembly comprises a water inlet pipe fixedly installed at the bottom position of the mold body and a return pipe fixedly installed at the top position of the mold body, the water inlet pipe and the return pipe are both connected with the inner cavity, a three-way valve is arranged at the end of the water inlet pipe, a hot water pipe is fixedly installed on one tube body of the three-way valve, a first pump body is fixedly installed on the end of the hot water pipe, a suction pipe is fixedly installed on the water inlet end of the first pump body, an insulation tube is fixedly installed on the end of the suction pipe, a plurality of second temperature-controlled electric heaters arranged in a ring with equal intervals are fixedly installed on the inner wall of the insulation tube, and a cold water pipe is fixedly installed on the remaining tube body of the three-way valve.

[0007] Preferably, a molding chamber connected to the outside is provided in the mold body, and the size of the molding chamber is adapted to the size of the workpiece.

[0008] Preferably, a plurality of through holes communicating with the outside are arranged on the top wall of the inner chamber, a first temperature-controlled electric heater is arranged in the through holes, and a bottom end of the first temperature-controlled electric heater extends into the inner chamber.

[0009] Preferably, a fixing plate is fixedly mounted on the top end of the first temperature-controlled electric heater, and the fixing plate is fixedly mounted on the top surface of the mold body by a plurality of fastening screws.

[0010] Preferably, a plurality of annular grooves are arranged on the top surface of the mold body and are arranged concentrically with the corresponding through holes. A sealing ring is snap-fitted in the annular groove, and the fixing plate abuts against the sealing ring.

[0011] Preferably, a plurality of supporting legs are fixedly mounted on the bottom surface of the heat-insulating cylinder, and a supporting plate is fixedly mounted on the bottom end of the supporting legs.

[0012] Preferably, a top cover is hingedly connected to the top surface of the heat-insulating cylinder via a hinge, a sealing gasket is fixedly mounted on the front side surface of the top cover, and a handle is fixedly mounted on the back surface of the top cover.

[0013] Preferably, a sewage pipe is fixedly mounted on the bottom cylinder of the heat-insulating cylinder, and a sewage valve is fixedly mounted on the sewage pipe.

[0014] Preferably, an external tube is fixedly mounted on the top cylinder of the heat-insulating cylinder, and the distance between the external tube and the top surface of the heat-insulating cylinder is greater than 5 cm.

[0015] Preferably, a copper tube is provided at the end of the cold water pipe, a second pump body is provided at the end of the copper tube, and an external tube is fixedly installed at the water inlet end of the second pump body.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention ensures that, when in use, water can be transported into the inner cavity by means of a cold water pipe, so as to realize heat exchange operation on the molding cavity part, which is beneficial to the rapid molding of plastic parts. In addition, by controlling the opening of the three-way valve, after the next injection molding, the first pump body can be used to transport the hot water heated in the heat preservation cylinder into the inner cavity, so as to discharge the cold water in the inner cavity outwards, and at the same time, introduce high-temperature hot water to increase the temperature in the inner cavity and the molding cavity, reduce the temperature difference with the molten material, and facilitate the flow of the molten material in the molding cavity, so as to achieve the effect of controlling efficient and rapid heating and cooling in the molding cavity.

[0017] 2. The present invention provides a reflux pipe to allow water in the inner chamber to flow back into the insulation tube, and excess water in the insulation tube can be discharged outward along the external pipe. The first temperature-controlled electric heater can further achieve the effect of rapid heating of the inner chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 is a cross-sectional view of the mold body of the present invention; Figure 5 It is a schematic diagram of the structure of the hot and cold components of the present invention; Figure 6 It is a partial structural schematic diagram of the hot and cold components of the present invention; The meaning of each number in the figure is: 1. mold body; 10. molding chamber; 11. inner chamber; 12. through hole; 13. annular groove; 131. sealing ring; 14. first temperature-controlled electric heater; 141. fixing plate; 2. Hot and cold components; 20. Water inlet pipe; 21. Three-way valve; 22. Hot water pipe; 23. First pump body; 231. Suction pipe; 24. Insulation tube; 241. Support leg; 242. Support plate; 243. Second temperature-controlled electric heater; 244. Top cover; 245. Sealing pad; 246. Handle; 25. Drain pipe; 251. Drain valve; 26. External pipe; 27. Cold water pipe; 28. Second pump body; 281. Copper pipe; 282. External pipe; 29. ​​Reflux pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it is to 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0021] See also Figure 1-Figure 6 The present invention provides a technical solution: a controllable high-efficiency rapid heating and cooling mold structure, comprising a mold body 1, a molding chamber 10 connected to the outside is arranged in the mold body 1, the size of the molding chamber 10 is adapted to the size of the workpiece, an inner chamber 11 is arranged inside the mold body 1, the inner chamber 11 is not connected to the molding chamber 10, a hot and cold assembly 2 is arranged on the mold body 1, the hot and cold assembly 2 comprises a water inlet pipe 20 fixedly installed at the bottom position of the mold body 1 and a return pipe 29 fixedly installed at the top position of the mold body 1, the water inlet pipe 20 and the return pipe 29 are both connected to the inner chamber 11, a three-way valve 21 is arranged at the end of the water inlet pipe 20, and the three-way valve A hot water pipe 22 is fixedly installed on one tube body of 21, a first pump body 23 is fixedly installed on the end of the hot water pipe 22, a suction pipe 231 is fixedly installed on the water inlet end of the first pump body 23, a heat preservation tube 24 is fixedly installed on the end of the suction pipe 231, a plurality of second temperature-controlled electric heaters 243 arranged in a ring shape and at equal intervals are fixedly installed on the inner wall of the heat preservation tube 24, a cold water pipe 27 is fixedly installed on the remaining tube body of the three-way valve 21, by controlling the opening and closing of the three-way valve 21 and utilizing the cold water pipe 27 to inlet water, cold water is transported for cooling operation, and the first pump body 23 is operated to transport the hot water in the heat preservation tube 24 to the inner chamber 11, so as to achieve rapid heating operation.

[0022] In this embodiment, a plurality of through holes 12 communicating with the outside are provided on the top wall of the inner chamber 11, and a first temperature-controlled electric heater 14 is provided in the through holes 12, and the bottom end of the first temperature-controlled electric heater 14 extends into the inner chamber 11; a fixing plate 141 is fixedly installed on the top end of the first temperature-controlled electric heater 14, and the fixing plate 141 is fixedly installed on the top surface of the mold body 1 by a plurality of fastening screws, so as to facilitate the fixed installation operation of the first temperature-controlled electric heater 14, and through the first temperature-controlled electric heater 14, the interior of the inner chamber 11 can be further heated, thereby realizing rapid heating operation.

[0023] Specifically, a plurality of annular grooves 13 concentrically arranged with the corresponding through holes 12 are arranged on the top surface of the mold body 1, and a sealing ring 131 is snap-fitted in the annular groove 13, and the fixed plate 141 is against the sealing ring 131 to ensure the sealing and prevent leakage.

[0024] Furthermore, a plurality of support legs 241 are fixedly mounted on the bottom surface of the heat preservation cylinder 24 , and a support plate 242 is fixedly mounted on the bottom end of the support legs 241 , so that the support operation is performed by utilizing the support legs 241 and the support plate 242 .

[0025] In addition, a top cover 244 is hinged on the top surface of the heat preservation tube 24, a sealing gasket 245 is fixedly installed on the front side of the top cover 244, and a handle 246 is fixedly installed on the back side of the top cover 244. When the top cover 244 is closed, heat loss can be reduced.

[0026] It is worth mentioning that a drain pipe 25 is fixedly installed on the bottom cylinder of the insulation cylinder 24, and a drain valve 251 is fixedly installed on the drain pipe 25, so that the insulation cylinder 24 can be drained when necessary; an external pipe 26 is fixedly installed on the top cylinder of the insulation cylinder 24, and the distance between the external pipe 26 and the top surface of the insulation cylinder 24 is greater than 5 cm, so that excess water in the insulation cylinder 24 can be discharged to the outside along the external pipe 26 and supplied to the outside for use or for heat exchange operations in the outside.

[0027] It is worth noting that a copper tube 281 is provided at the end of the cold water pipe 27, a second pump body 28 is provided at the end of the copper tube 281, and an external pipe 282 is fixedly installed at the water inlet end of the second pump body 28 to ensure that the second pump body 28 can be used to transport cold water when in use.

[0028] Finally, it should be noted that the first pump body 23, the second pump body 28, the second temperature-controlled electric heater 243 and the first temperature-controlled electric heater 14 involved in the present invention are all universal standard parts or parts known to technical personnel in this field, and their structures and principles are all known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted controllers and power supplies, are connected through wires. The specific connection means should refer to the working principle of the present invention. The electrical connection between each electrical component is completed in a sequential working order, and the detailed connection means are all well-known technologies in the field.

[0029] When the controllable, efficient, rapid heating and rapid cooling mold structure of the present invention is used, a proper amount of heat exchange medium is added into the heat preservation tube 24, and then the second temperature-controlled electric heater 243 is connected to an external power supply and made to work. The second temperature-controlled electric heater 243 starts to heat the medium. Before the injection molding operation is performed in the mold body 1, the first pump body 23 is started and made to work. The first pump body 23 works to transport the heated medium into the inner chamber 11. The heated medium can transfer heat with the molding chamber 10 to increase the temperature of the molding chamber 10. In addition, when necessary, the first temperature-controlled electric heater 14 can be started and made to work. The operation of the first temperature-controlled electric heater 14 can further promote the temperature increase in the inner chamber 11, realize the rapid heating operation in the molding chamber 10, and reduce the temperature difference between the molding chamber 10 and the molten material during injection molding. When cooling operation is required after injection molding is completed, the three-way valve 21 is controlled to connect the water inlet pipe 20 with the cold water pipe 27. At this time, the second pump body 28 is started and made to work. The second pump body 28 works to transport external cold water to the inner chamber 11 to achieve cooling operation. The water in the inner chamber 11 can be discharged into the insulation tube 24 along the reflux pipe 29. When the amount of water in the insulation tube 24 is large, the excess water can be discharged outward along the external tube 26.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A controllable and efficient rapid heating and cooling mold structure, comprising a mold body (1), characterized in that: An inner cavity (11) is provided inside the mold body (1), and a hot and cold assembly (2) is provided on the mold body (1). The hot and cold assembly (2) comprises a water inlet pipe (20) fixedly installed at the bottom of the mold body (1) and a return pipe (29) fixedly installed at the top of the mold body (1). The water inlet pipe (20) and the return pipe (29) are both connected to the inner cavity (11). A three-way valve (21) is provided at the end of the water inlet pipe (20). The three-way valve (21) is provided at the end of the water inlet pipe (20). A hot water pipe (22) is fixedly mounted on one of the pipe bodies of the three-way valve (1), a first pump body (23) is fixedly mounted on the end of the hot water pipe (22), a suction pipe (231) is fixedly mounted on the water inlet end of the first pump body (23), a heat preservation tube (24) is fixedly mounted on the end of the suction pipe (231), a plurality of second temperature-controlled electric heaters (243) arranged in a ring shape and at equal intervals are fixedly mounted on the inner wall of the heat preservation tube (24), and a cold water pipe (27) is fixedly mounted on the remaining pipe body of the three-way valve (21).

2. The controllable high-efficiency rapid heating and cooling mold structure according to claim 1 is characterized in that: A molding chamber (10) connected to the outside is arranged in the mold body (1), and the size of the molding chamber (10) is adapted to the size of the workpiece.

3. The controllable high-efficiency rapid heating and cooling mold structure according to claim 1 is characterized in that: A plurality of through holes (12) communicating with the outside are arranged on the top wall of the inner chamber (11), a first temperature-controlled electric heater (14) is arranged in the through holes (12), and the bottom end of the first temperature-controlled electric heater (14) extends into the inner chamber (11).

4. The controllable high-efficiency rapid heating and cooling mold structure according to claim 3 is characterized in that: A fixing plate (141) is fixedly mounted on the top end of the first temperature-controlled electric heater (14); the fixing plate (141) is fixedly mounted on the top surface of the mold body (1) by means of a plurality of fastening screws.

5. The controllable high-efficiency rapid heating and cooling mold structure according to claim 4 is characterized in that: A plurality of annular grooves (13) are arranged concentrically with the corresponding through holes (12) on the top surface of the mold body (1), a sealing ring (131) is snap-fitted in the annular groove (13), and the fixed plate (141) abuts against the sealing ring (131).

6. The controllable high-efficiency rapid heating and cooling mold structure according to claim 1 is characterized in that: A plurality of support legs (241) are fixedly mounted on the bottom surface of the heat-insulating cylinder (24), and a support plate (242) is fixedly mounted on the bottom end of the support leg (241).

7. The controllable high-efficiency rapid heating and cooling mold structure according to claim 1 is characterized in that: A top cover (244) is hingedly connected to the top surface of the heat-insulating cylinder (24) via a hinge, a sealing pad (245) is fixedly mounted on the front side of the top cover (244), and a handle (246) is fixedly mounted on the back side of the top cover (244).

8. The controllable high-efficiency rapid heating and cooling mold structure according to claim 1 is characterized in that: A sewage discharge pipe (25) is fixedly mounted on the bottom cylinder body of the heat-insulating cylinder (24), and a sewage discharge valve (251) is fixedly mounted on the sewage discharge pipe (25).

9. The controllable high-efficiency rapid heating and cooling mold structure according to claim 1, characterized in that: An external tube (26) is fixedly mounted on the top cylinder of the heat-insulating cylinder (24), and the distance between the external tube (26) and the top surface of the heat-insulating cylinder (24) is greater than 5 cm.

10. The controllable high-efficiency rapid heating and cooling mold structure according to claim 1, characterized in that: A copper tube (281) is provided at the end of the cold water pipe (27), a second pump body (28) is provided at the end of the copper tube (281), and an external tube (282) is fixedly mounted at the water inlet end of the second pump body (28).

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