Injection molding cooling mold for plastic parts of electric vehicle

Abstract

The utility model relates to the technical field of cooling molds, in particular to an electric vehicle plastic part injection molding cooling mold which comprises an upper mold, a lower mold, a water tank, a refrigerator, a water outlet pipe, a return pipe and a protection mechanism, and the protection mechanism comprises filter cotton, a water filter tank, a tank cover, a filter screen, a dirt collection box and a filter element. Water flowing into the water tank is preliminarily filtered, the water after heat exchange flows into the water filtering tank through the return pipe and the water inlet pipe, the water after heat exchange is preliminarily filtered through a filter screen in the water filtering tank, large water scales or impurities are collected by a dirt collecting box, and the hot water is further filtered through a filter element. The problems that water scale is extremely prone to being generated in water after heat exchange, the heat conductivity coefficient of the water scale is extremely low, the water scale is prone to being attached into a pipeline to block the pipeline, the cooling effect is reduced, the pipeline is even blocked seriously, and the production efficiency of products is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling molds, in particular to an injection cooling mold for plastic parts of an electric vehicle. Background Art

[0002] A mold is a processing tool for mass production of plastic accessories. Specifically, the melted material is injected into the mold cavity through high pressure, and solidified after cooling to obtain a finished product. Most of the existing electric vehicle plastic parts production molds are cooled by water. The cold water exchanges heat with the accessories in the mold. As the water temperature rises, the cooling effect becomes worse. Therefore, cold water needs to be continuously added, which wastes water resources.

[0003] In the prior art, CN212764493U discloses a plastic accessory injection cooling mold, in which water in a cooling box is cooled by a refrigerator, and the cold water enters a spiral coil through an outlet pipe. The cold water in the spiral coil exchanges heat with accessories in an upper mold and a lower mold, and the water after absorbing heat returns to the cooling box through a return pipe, completing water circulation cooling and avoiding waste of water resources.

[0004] However, in the above structure, scale is easily accumulated in the pipes of the water in the cooling box during long-term use, especially in the water after heat exchange. The thermal conductivity of scale is extremely low and it is easy to adhere to the pipes, reducing the cooling effect. In severe cases, it may even block the pipes and affect the production efficiency of the product. Utility Model Content

[0005] The purpose of the utility model is to provide an injection molding cooling mechanism for plastic accessories of electric vehicles, which solves the problem that water in a cooling box is prone to scale accumulation in pipes during long-term use, especially water after heat exchange is prone to scale. The thermal conductivity of scale is extremely low and it is easy to adhere to the pipes, reducing the cooling effect. In severe cases, it may even block the pipes and affect the production efficiency of the product.

[0006] To achieve the above-mentioned purpose, the utility model provides an injection cooling mold for plastic accessories of an electric vehicle, comprising an upper mold, a lower mold, a water tank, a refrigerator, a water outlet pipe, a reflux pipe and a protection mechanism, wherein an upper mold cavity is arranged in the upper mold, an injection tube is arranged on the top of the upper mold, and the injection tube runs through the upper mold and the upper mold cavity, a lower mold cavity is arranged in the lower mold, a water injection port is arranged on the top of the water tank, a water outlet is arranged on the bottom of the water tank, a reflux port is arranged on the outer side wall of the water tank, the refrigerator is fixedly connected to the water tank and is located below the water tank, the water outlet pipe is arranged at the water outlet of the water tank, and the water outlet pipe connects the water tank and the refrigerator. The return pipe is arranged at the return port of the water tank, the protection mechanism comprises filter cotton, a water filter box, a box cover, a filter screen, a dirt collecting box and a filter element, the filter cotton is arranged at the water filling port of the water tank, an inlet pipe is arranged on the outer wall of the water filter box, a drain pipe is arranged on the top of the water filter box, and the drain pipe is connected with the return pipe, the box cover is movably connected with the water filter box and is located above the water filter box, the filter screen is fixedly connected with the water filter box and is located inside the water filter box, the dirt collecting box is movably connected with the water filter box and is located below the water filter box, and the filter element is fixedly connected with the water filter box and is located on the side of the filter screen away from the dirt collecting box.

[0007] Among them, the protection mechanism also includes a sleeve and a cleaning ball. The sleeve is connected to the water inlet pipe and the water outlet pipe, and holes are provided at both ends of the sleeve. The cleaning ball is movably arranged inside the sleeve, and the cleaning ball is loose and porous and filled with activated carbon.

[0008] Among them, the protection mechanism also includes a driving assembly, a rotating shaft, and multiple groups of stirring blades. The driving assembly is arranged on the outer wall of the water tank. The rotating shaft is fixedly connected to the driving assembly and is located inside the water tank. The multiple groups of stirring blades are respectively fixedly connected to the rotating shaft and are located on the outer wall of the rotating shaft.

[0009] Among them, the driving assembly includes a driving motor and a reducer, the driving motor is fixedly connected to the water tank and is located on the outer wall of the water tank, one end of the reducer is fixedly connected to the output end of the driving motor and is located above the driving motor, the other end of the reducer is fixedly connected to the rotating shaft, and the output end of the reducer passes through the water tank.

[0010] Wherein, the electric vehicle plastic parts injection cooling mold further includes a cooling mechanism, and the cooling mechanism is arranged inside the upper mold and the lower mold.

[0011] Wherein, the cooling mechanism includes a cooling frame, a connecting pipe and an atomizing nozzle. The cooling frame is sleeved on the outside of the lower mold cavity and the upper mold cavity, and the cooling frame is connected to the water outlet pipe and the sleeve. The connecting pipe is fixedly connected to the cooling frame, and the connecting pipe passes through the cooling frame. The atomizing nozzle is fixedly connected to the connecting pipe and is located on the side of the cooling frame close to the upper mold cavity and the lower mold cavity.

[0012] Among them, the cooling mechanism also includes a blower, an air inlet pipe and an exhaust pipe, the blower is fixedly connected to the lower mold and is located on the outer wall of the lower mold, the air inlet pipe is fixedly connected to the output end of the blower, and the air inlet pipe passes through the lower mold, the exhaust pipe is fixedly connected to the upper mold and is located on the outer wall of the mold, and the exhaust pipe passes through the upper mold.

[0013] The utility model provides an injection cooling mold for plastic parts of an electric vehicle. The filter cotton is arranged at the water inlet of the water tank to preliminarily filter the water flowing into the water tank. The water after the heat exchange is completed flows into the filter water box through the return pipe and the water inlet pipe. The water temperature of the water after the heat exchange is increased and scale is easily generated. The hot water is preliminarily filtered by the filter screen in the filter water box, and larger scale or impurities are collected by the dirt collecting box. The filter element further filters the hot water, which solves the problem that scale is easily generated in the water after the heat exchange, the thermal conductivity of the scale is extremely low, and it is easy to adhere to the pipe and then block the pipe, so that the cooling effect is reduced, and in severe cases, it may even block the pipe, affecting the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

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

[0016] Figure 2 It is a schematic diagram of the internal structure of the water filter box of the first embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the overall internal structure of the first embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of the internal structure of the water tank of the first embodiment of the utility model.

[0019] Figure 5 It is a structural schematic diagram of the sleeve of the first embodiment of the utility model.

[0020] Figure 6It is a structural cross-sectional view of the sleeve of the first embodiment of the utility model.

[0021] Figure 7 It is a schematic structural diagram of a cooling frame, a connecting pipe, an atomizing nozzle, a water outlet pipe and a return pipe of the second embodiment of the utility model.

[0022] Figure 8 It is a structural schematic diagram of the blower, air inlet pipe, air beater pipe, upper mold and lower mold of the second embodiment of the utility model.

[0023] 101-upper mold, 102-lower mold, 103-water tank, 104-refrigerator, 105-water outlet pipe, 106-refrigeration pipe, 107-upper mold cavity, 108-injection port, 109-lower mold cavity, 110-water injection port, 111-water outlet, 112-reflux port, 113-filter cotton, 114-water filter box, 115-box cover, 116-filter screen, 117-dirt collection box, 118-filter element, 119-water inlet pipe, 120-drain pipe, 121-sleeve, 122-cleaning ball, 123-rotating shaft, 124-stirring blade, 125-drive motor, 126-reducer, 201-cooling frame, 202-connecting pipe, 203-atomizing nozzle, 204-blower, 205-air inlet pipe, 206-exhaust pipe. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] First embodiment

[0026] See also Figure 1 to Figure 6 ,in Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 This is a schematic diagram of the internal structure of the water filter box of the first embodiment of the utility model. Figure 3 It is a schematic diagram of the overall internal structure of the first embodiment of the utility model. Figure 4 This is a schematic diagram of the internal structure of the water tank of the first embodiment of the utility model. Figure 5 This is a schematic structural diagram of the sleeve of the first embodiment of the utility model. Figure 6 It is a structural cross-sectional view of the sleeve of the first embodiment of the utility model.

[0027] The utility model provides an injection cooling mold for plastic accessories of an electric vehicle: comprising an upper mold 101, a lower mold 102, a water tank 103, a refrigerator 104, a water outlet pipe 105, a return pipe 106 and a protection mechanism, wherein the protection mechanism comprises filter cotton 113, a water filter box 114, a box cover 115, a filter screen 116, a dirt collection box 117, a filter element 118, a sleeve 121, a cleaning ball 122, a driving assembly, a rotating shaft 123 and a plurality of stirring blades 124, and the driving assembly comprises a driving motor 125 and a reducer 126.

[0028] According to a specific implementation, an upper mold cavity 107 is provided in the upper mold 101, an injection molding tube is provided at the top of the upper mold 101, and the injection molding tube passes through the upper mold 101 and the upper mold cavity 107, a lower mold cavity 109 is provided in the lower mold 102, a water injection port 110 is provided at the top of the water tank 103, a water outlet 111 is provided at the bottom of the water tank 103, a reflux port 112 is provided on the outer wall of the water tank 103, the refrigerator 104 is fixedly connected to the water tank 103 and is located below the water tank 103, the water outlet pipe 105 is provided at the water outlet 111 of the water tank 103, and the water outlet pipe 105 is provided at the water outlet 111 of the water tank 103. 05 connects the water tank 103 and the refrigerator 104, the reflux pipe 106 is arranged at the reflux port 112 of the water tank 103, when the hot-melt plastic is injected into the upper mold cavity 107 and the lower mold cavity 109 through the injection port 108, the water in the water tank 103 flows into the refrigerator 104 through the water outlet 111, and the refrigerator 104 operates to cool the water in the water tank 103 and flow out through the water outlet pipe 105, and cool the hot-melt plastic in the upper mold cavity 107 and the lower mold cavity 109, and the water after heat exchange flows back to the water tank 103 through the reflux pipe 106.

[0029] The filter cotton 113 is arranged at the water inlet 110 of the water tank 103, a water inlet pipe 119 is arranged on the outer wall of the filter water box 114, a drain pipe 120 is arranged on the top of the filter water box 114, and the drain pipe 120 is communicated with the return pipe 106, the box cover 115 is movably connected to the filter water box 114 and is located above the filter water box 114, the filter screen 116 is fixedly connected to the filter water box 114 and is located inside the filter water box 114, the dirt collecting box 117 is movably connected to the filter water box 114 and is located below the filter water box 114, the filter element 118 is fixedly connected to the filter water box 114 and is located The filter screen 116 is located on one side away from the dirt collecting box 117. The filter cotton 113 is arranged at the water inlet 110 of the water tank 103 to perform preliminary filtration on the water flowing into the water tank 103. The water after the heat exchange is flowed into the filter water box 114 through the return pipe 106 and the water inlet pipe 119. The water temperature after the heat exchange is increased and scale is easily generated. The hot water is preliminarily filtered by the filter screen 116 in the filter water box 114. Larger scale or impurities are collected by the dirt collecting box 117. The encrypted filter cotton filled in the filter element 118 further filters the hot water to prevent the scale generated in the hot water from clogging the pipe, thereby affecting the normal operation of the equipment.

[0030] Among them, the sleeve 121 is connected with the water inlet pipe 119 and the water outlet pipe 105, and holes are set at both ends of the sleeve 121. The cleaning ball 122 is movably set inside the sleeve 121, and the cleaning ball 122 is loose and porous, and is filled with activated carbon. The sleeve 121 is used to connect with the water inlet pipe 119. Hot water flows into the sleeve 121 and contacts with the cleaning ball 122. The cleaning ball 122 absorbs scale in the water to prevent scale accumulation and clogging the pipeline.

[0031] Among them, the driving component is arranged on the outer wall of the water tank 103, the rotating shaft 123 is connected to the driving component and is located inside the water tank 103, and the multiple groups of stirring blades 124 are respectively fixedly connected to the rotating shaft 123 and are located on the outer wall of the rotating shaft 123. After the heat exchange, the water temperature increases and it is very easy to produce scale. After flowing back to the water tank 103 through the return pipe 106, the driving component is operated to drive the rotating shaft 123 and the multiple groups of stirring blades 124 to rotate, and stir the water in the water tank 103, thereby increasing the flow rate of the water and reducing the formation of scale. At the same time, stirring can also break up the small scale particles that have been formed to prevent scale from adhering to the inner wall of the water tank 103.

[0032] Among them, the driving motor 125 is fixedly connected to the water tank 103 and is located on the outer wall of the water tank 103, one end of the reducer 126 is fixedly connected to the output end of the driving motor 125 and is located above the driving motor 125, the other end of the reducer 126 is fixedly connected to the rotating shaft 123, and the output end of the reducer 126 passes through the water tank 103, the driving motor 125 moves, and the driving motor 125 and the reducer 126 cooperate to drive the rotating shaft 123 and the multiple groups of stirring blades 124 to rotate.

[0033] When using the electric vehicle plastic accessory injection cooling mold of the utility model to cool the accessory, the hot-melt plastic is injected into the upper mold cavity 107 and the lower mold cavity 109 through the injection port 108, and then water is added to the water tank 103. The filter cotton 113 filters the water flowing into the water tank 103, and the water in the water tank 103 flows out through the water outlet pipe 105. The refrigerator 104 operates to cool the water in the water tank 103 and flows out through the water outlet pipe 105, and the hot-melt plastic in the upper mold cavity 107 and the lower mold cavity 109 is cooled and cooled. After the heat exchange is completed, the cleaning ball 122 in the sleeve 121 preliminarily absorbs the scale in the hot water, and the water flows into the filter water tank 114 through the sleeve 121 and the water inlet pipe 119, and the water is completed. After the heat exchange, the water temperature rises and it is very easy to produce scale. The hot water is initially filtered by the filter 116 in the water filter box 114, and larger scale or impurities are collected by the dirt collecting box 117. The filter element 118 further filters the hot water and flows into the return pipe 106 through the drain pipe 120 to prevent the scale produced in the hot water from clogging the pipe and affecting the normal operation of the equipment. Finally, it flows back to the water tank 103 through the return pipe 106. The drive motor 125 and the reducer 126 cooperate to drive the rotating shaft 123 and the multiple groups of stirring blades 124 to rotate, stir the water in the water tank 103, prevent the suspended matter and impurities in the water from settling to the bottom of the water tank 103 after being left still for a long time, generate water flow movement through stirring, and maintain the uniformity of water quality.

[0034] Second embodiment

[0035] See also Figure 7 and Figure 8 ,in Figure 7 This is a schematic diagram of the structure of the cooling frame, connecting pipe, atomizing nozzle, water outlet pipe and return pipe of the second embodiment of the utility model. Figure 8 It is a structural schematic diagram of the blower, air inlet pipe, air beater pipe, upper mold and lower mold of the second embodiment of the utility model.

[0036] On the basis of the first embodiment, an electric vehicle plastic accessory injection cooling mold of the utility model further includes a cooling mechanism, which includes a cooling frame 201, a connecting pipe 202, an atomizing nozzle 203, a blower 204, an air inlet pipe 205 and an exhaust pipe 206.

[0037] According to a specific implementation, the cooling mechanism is disposed inside the upper mold 101 and the lower mold 102 , and the cooling mechanism is used to cool the hot melt plastic in the upper mold cavity 107 and the lower mold cavity 109 .

[0038] The cooling frame 201 is sleeved on the outside of the lower mold cavity 109 and the upper mold cavity 107, and the cooling frame 201 is connected to the water outlet pipe 105 and the sleeve 121, the connecting pipe 202 is fixedly connected to the cooling frame 201, and the connecting pipe 202 passes through the cooling frame 201, the atomizing nozzle 203 is fixedly connected to the connecting pipe 202, and is located on the side of the cooling frame 201 close to the upper mold cavity 107 and the lower mold cavity 109, and the water in the water tank 103 flows into the water tank 103 through the water outlet pipe 105. In the cooling frame 201, the cooling frame 201 cools the hot melt plastic in the upper mold cavity 107 and the lower mold cavity 109. The cooling frame 201 increases the area of ​​heat exchange, allowing the hot melt plastic to cool faster. At the same time, water is sprayed onto the outer surfaces of the upper mold cavity 107 and the lower mold cavity 109 through the atomizing nozzle 203 for cooling, thereby improving the cooling efficiency. At the same time, the air in the upper mold cavity 107 and the lower mold cavity 109 is prevented from being too dry during the cooling process, resulting in excessive loss of moisture on the product surface, thereby causing the product to crack.

[0039] Among them, the blower 204 is fixedly connected to the lower mold 102 and is located on the outer wall of the lower mold 102, the air inlet pipe 205 is fixedly connected to the output end of the blower 204, and the air inlet pipe 205 passes through the lower mold 102, the exhaust pipe 206 is fixedly connected to the upper mold 101 and is located on the outer wall of the mold, and the exhaust pipe 206 passes through the upper mold 101, the blower 204 operates to transport cold air to the upper mold 101 and the lower mold 102 through the air inlet pipe 205, cools the hot melt plastic in the upper mold cavity 107 and the lower mold cavity 109, and further improves the cooling efficiency.

[0040] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An injection cooling mold for plastic parts of an electric vehicle, comprising an upper mold, a lower mold, a water tank, a refrigerator, a water outlet pipe and a return pipe, wherein an upper mold cavity is arranged in the upper mold, an injection tube is arranged on the top of the upper mold, and the injection tube passes through the upper mold and the upper mold cavity, a lower mold cavity is arranged in the lower mold, a water injection port is arranged on the top of the water tank, a water outlet is arranged on the bottom of the water tank, a return port is arranged on the outer side wall of the water tank, the refrigerator is fixedly connected to the water tank and is located below the water tank, the water outlet pipe is arranged at the water outlet of the water tank, and the water outlet pipe communicates the water tank and the refrigerator, and the return pipe is arranged at the return port of the water tank, characterized in that: It also includes a protection mechanism, which includes filter cotton, a water filter box, a box cover, a filter screen, a dirt collecting box and a filter element. The filter cotton is arranged at the water inlet of the water tank, a water inlet pipe is arranged on the outer wall of the water filter box, a drain pipe is arranged on the top of the water filter box, and the drain pipe is connected with the return pipe, the box cover is movably connected to the water filter box and is located above the water filter box, the filter screen is fixedly connected to the water filter box and is located inside the water filter box, the dirt collecting box is movably connected to the water filter box and is located below the water filter box, and the filter element is fixedly connected to the water filter box and is located on the side of the filter screen away from the dirt collecting box.

2. The electric vehicle plastic parts injection cooling mold according to claim 1, characterized in that: The protection mechanism also includes a sleeve and a cleaning ball. The sleeve is connected to the water inlet pipe and the water outlet pipe, and holes are provided at both ends of the sleeve. The cleaning ball is movably arranged inside the sleeve, and the cleaning ball is loose and porous and filled with activated carbon.

3. The electric vehicle plastic parts injection cooling mold according to claim 1, characterized in that: The protection mechanism also includes a driving assembly, a rotating shaft, and multiple groups of stirring blades. The driving assembly is arranged on the outer wall of the water tank. The rotating shaft is fixedly connected to the driving assembly and is located inside the water tank. The multiple groups of stirring blades are respectively fixedly connected to the rotating shaft and are located on the outer wall of the rotating shaft.

4. An injection cooling mold for electric vehicle plastic parts as claimed in claim 3, characterized in that: The driving assembly includes a driving motor and a reducer. The driving motor is fixedly connected to the water tank and is located on the outer wall of the water tank. One end of the reducer is fixedly connected to the output end of the driving motor and is located above the driving motor. The other end of the reducer is fixedly connected to the rotating shaft, and the output end of the reducer passes through the water tank.

5. The electric vehicle plastic parts injection cooling mold according to claim 2, characterized in that: The electric vehicle plastic parts injection cooling mold further comprises a cooling mechanism, and the cooling mechanism is arranged inside the upper mold and the lower mold.

6. An injection cooling mold for electric vehicle plastic parts as claimed in claim 5, characterized in that: The cooling mechanism includes a cooling frame, a connecting pipe and an atomizing nozzle. The cooling frame is sleeved on the outside of the lower mold cavity and the upper mold cavity, and the cooling frame is connected to the water outlet pipe and the sleeve. The connecting pipe is fixedly connected to the cooling frame and passes through the cooling frame. The atomizing nozzle is fixedly connected to the connecting pipe and is located on a side of the cooling frame close to the upper mold cavity and the lower mold cavity.

7. An injection cooling mold for electric vehicle plastic parts as claimed in claim 6, characterized in that: The cooling mechanism also includes a blower, an air inlet duct and an air exhaust duct. The blower is fixedly connected to the lower mold and is located on the outer side wall of the lower mold. The air inlet duct is fixedly connected to the output end of the blower and passes through the lower mold. The air exhaust duct is fixedly connected to the upper mold and is located on the outer side wall of the mold, and the air exhaust duct passes through the upper mold.

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