Double-layer water path structure for insulating layer injection mold and use method of double-layer water path structure

Abstract

The invention discloses a double-layer water path structure for an insulating layer injection mold and a using method. The double-layer water path structure comprises a heat supply module, a cold supply module, a mold forming cavity, a mold cavity, an injection molding opening, a high-temperature water path, a low-temperature water path and a glue inlet runner connected with the high-temperature water path and the low-temperature water path. The high-temperature water way is provided with a plurality of channels, and the low-temperature water way is provided with a plurality of channels. The shape of the mold forming cavity is set to be in a multi-section type. And the high-temperature water paths and the low-temperature water paths are alternately arranged in the mold in sequence. By means of the design of the double water channels, the flowing speed in the injection molding process is increased, the filling process is accelerated, and the solidification speed is delayed, so that the final injection molding finished product shows an extremely thin effect, the yield of the finished product is improved through rapid cooling after injection molding is completed, and the product quality is improved. And through the multi-channel design of the waterway, the small-range accurate temperature control in the mold is realized.

Description

Technical Field

[0001] The invention relates to the field of injection molding, in particular to a double-layer water channel structure used for an insulation layer injection mold. Background Art

[0002] In modern manufacturing, injection molding is widely used in the electronics, electrical and automotive industries due to its high efficiency and high precision, and plays an important role in the production of insulation materials. However, current injection molds still have significant deficiencies in temperature control, cooling systems and gas removal, which have a negative impact on the molding quality and performance of the product.

[0003] First, traditional injection molds usually adopt a single water channel design, which makes it difficult to achieve effective thermal management. During the injection molding process, the temperature uniformity of the mold is crucial. Uneven mold temperature can cause poor material flow, resulting in flow marks, bubbles or other defects, which is particularly evident in the manufacture of highly complex and high-precision insulation layer products. For example, when the mold temperature is too high, the material may solidify too quickly, resulting in poor molding; while too low a temperature may prevent the material from flowing fully, affecting the molding effect.

[0004] Secondly, existing technologies do not pay enough attention to cooling efficiency. The cooling system of traditional molds is often simple in design and has a slow cooling speed, which is difficult to meet the needs of high-volume production. This not only prolongs the production cycle, but also increases energy consumption, resulting in low production efficiency. In addition, the mold cooling system lacks flexibility and is difficult to adjust according to the requirements of different materials and products, resulting in waste of resources and increased production costs.

[0005] In addition, the existing technology is relatively weak in terms of air removal. During the injection molding process, the air in the mold cavity cannot be effectively discharged, and bubbles are easily formed, which not only affects the appearance of the product, but also may reduce its electrical insulation performance. The presence of bubbles will cause the integrity of the insulation layer to be damaged, affecting the long-term reliability of the product. Therefore, improving the gas removal ability of the mold is the key to improving the molding quality, but the current design does not pay enough attention to this.

[0006] Finally, the high temperature and corrosion resistance of mold materials is also a major shortcoming in existing technologies. Since the injection molding process involves high temperature and high pressure operations, the mold material must have good heat resistance and corrosion resistance to ensure the stability of the mold during long-term use. However, many existing molds are insufficient in this regard and are prone to wear and deformation, further affecting production efficiency and product quality.

[0007] In summary, traditional injection molds have obvious deficiencies in temperature control, cooling efficiency, air exclusion and material properties. These problems urgently need to be taken seriously by the industry in order to promote the further development of the injection molding process. Summary of the invention

[0008] The object of the present invention is to provide a double-layer water channel structure for an insulation layer injection mold to solve the problems raised in the above background technology.

[0009] The present invention is achieved through the following technical solutions:

[0010] On the one hand, the present invention provides a double-layer water channel structure for an insulation layer injection mold, comprising a heat supply module, a cold supply module, a mold forming cavity, a mold cavity, an injection port, a high-temperature water channel, a low-temperature water channel, and a glue feed channel connected thereto;

[0011] The mold forming cavity is arranged inside the mold cavity;

[0012] The mold forming cavity is used to limit the shape of the rubber layer, and the mold forming cavity is connected to the rubber inlet channel through the injection port;

[0013] The high temperature water channel connects the heat supply module and the mold cavity;

[0014] The low-temperature water circuit connects the cold supply module and the mold cavity.

[0015] The heat supply module is used to heat the fluid to flow through the mold to a desired temperature;

[0016] The cold supply module is used to cool down the fluid that is to flow through the mold cavity;

[0017] The injection flow channel is used to allow the injectable fluid to enter the mold through the injection port.

[0018] The high-temperature water channel is provided with multiple channels to heat different areas of the mold cavity respectively; different positions of the mold cavity can be heated by setting different water flow paths, and the heating is more uniform;

[0019] The low-temperature water circuit is provided with a plurality of channels; by providing different water flow paths, different positions of the mold cavity can be cooled, and the cooling is more uniform.

[0020] The shape of the mold forming cavity is set to be multi-stage; by setting the mold forming cavity to be multi-stage, different positions of the stator core can be cooled or heated separately, making the temperature inside the mold more stable.

[0021] It also includes a temperature regulation module, which includes an adjustable heating plate and a temperature control device. The adjustable heating plate is fixed to the inner surface of the mold cavity by bolts, and the temperature control device is arranged outside the mold cavity. The adjustable heating plate and the temperature control device communicate with each other. The temperature control device can adjust different temperature control parameters of the adjustable heating plate to accurately adjust the temperature of the mold.

[0022] The adjustable heating plate can be directly fixed inside the mold in the form of a heating plate, and corresponding thermocouples are also arranged at intervals between the heating plates to perform separate temperature adjustments at different positions of the mold cavity to meet various different injection molding requirements.

[0023] It also includes a replaceable cooling module, which is fixed in the mold cavity through a slot, and is used to cool the mold molding cavity according to cooling requirements.

[0024] Among them, the replaceable cooling module is installed or disassembled at any stage of the injection molding process according to the cooling requirements, so as to avoid the negative impact of the heating link on the cooling link during the injection molding process, that is, the heating process will heat the installed cooling module and slow down the subsequent cooling speed.

[0025] It also includes a vacuum auxiliary module, which is connected to the mold cavity through a pipeline and is used to remove air in the cavity during the injection molding process.

[0026] A flow guide structure is provided in the mold cavity; the flow guide structure changes the flow direction of high-temperature or low-temperature water to uniformly heat or dissipate heat in the entire mold cavity. The flow guide plate in the flow guide structure is designed as a heat insulation plate, and the surface is provided with flow guide patterns to facilitate the formation of vortices to make the fluid flow uniform.

[0027] On the other hand, the present invention provides a double-layer water channel method using an insulating layer injection mold, comprising the following steps: installing and fixing the stator core in the mold molding cavity; turning on the high-temperature water channel module, allowing hot water to enter the mold to increase the mold temperature; starting injection molding; ending injection molding and turning on the low-temperature water channel.

[0028] Specifically, the steps include:

[0029] S1 installs the stator core in the mold cavity and fixes it based on the temperature requirements;

[0030] S2 opens the high-temperature water circuit based on temperature requirements;

[0031] S3 turns on the vacuum auxiliary module to remove the air in the cavity;

[0032] S4 is based on the encapsulation process steps. After the mold temperature is appropriate, injection molding begins;

[0033] S5 is based on the mold cooling process requirements. After the injection molding is completed, the low-temperature water circuit is opened; cold water enters the mold cavity for cooling;

[0034] S6 After the insulation layer is completely cured, open the mold and take out the molded product.

[0035] Before injection molding, turn on the vacuum assist module to remove air from the cavity.

[0036] After the insulation layer is completely cured, open the mold and take out the molded product.

[0037] On the other hand, the present invention provides a double-layer water channel method using an insulating layer injection mold, comprising the following steps:

[0038] Install the stator core in the mold cavity and fix it; turn on the high-temperature water circuit module, let hot water enter the mold to increase the mold temperature; start injection molding; end injection molding and turn on the low-temperature water circuit.

[0039] Specifically, the steps include:

[0040] S1 installs the stator core in the mold cavity and fixes it based on the temperature requirements;

[0041] S2 opens the high-temperature water circuit based on temperature requirements;

[0042] S3 turns on the vacuum auxiliary module to remove the air in the cavity;

[0043] S4 is based on the encapsulation process step, and after the mold temperature reaches the predetermined temperature, injection molding begins;

[0044] Based on the mold cooling process requirements, S5 opens the low-temperature water circuit after injection molding; cold water enters the mold cavity for cooling, and a replaceable cooling module is installed to assist in cooling the mold.

[0045] S7 After the insulation layer is completely cured, open the mold and take out the molded product, and remove the replaceable cooling module.

[0046] Beneficial effects of the present invention:

[0047] By arranging a heat supply module, a cold supply module, a mold molding cavity, a mold cavity, a high-temperature water channel, a low-temperature water channel and a glue feed channel connected thereto in an insulating layer injection molding mold, the high-temperature water channel and the low-temperature water channel form a loop in the mold cavity. Compared with the prior art, by arranging a high-temperature water channel and a low-temperature water channel, a loop is formed in the mold cavity, and the mold temperature is maintained within a specified range through heat exchange, thereby achieving the purpose of controlling the cooling speed and controlling the mold temperature through water channel design;

[0048] By setting up high-temperature water channels and low-temperature water channels, the temperature and cooling in the mold cavity can be uniform, the temperature in the mold can be accurately controlled, the quality of the rubber layer can be guaranteed, and the water channel layout is double-layered, which improves the overall utilization rate of the water channel and the heat exchange efficiency, can achieve rapid heating and cooling, and reduce energy consumption;

[0049] By using independent heat supply modules and cold supply modules in the insulation layer injection molding mold, compared with the existing technology, the pipeline type can accurately provide the heat required by the mold; at the same time, the two modules are independently controlled to achieve precise control of the mold temperature;

[0050] By setting up multi-section channels in the mold forming cavity and controlling the fluid direction by using the misalignment between the channels and the adjacent gaps, the influence of the fluid flow change on the temperature control can be effectively reduced. In addition, by setting the mold forming cavity to be multi-section, it is possible to achieve separate cooling or heating of different positions of the stator core, making the internal temperature of the mold more stable.

[0051] The temperature regulation module includes an adjustable heating plate and a temperature control device. Compared with the prior art, the fluid flowing through the mold can be heated to a desired temperature. At the same time, the adjustable heating plate contacts the surface of the mold cavity through the temperature control device. According to different mold temperature requirements, the temperature control parameters are adjusted to heat or cool the fluid flowing through the mold cavity, so as to realize injection molding of different encapsulation process requirements;

[0052] The temperature regulation module is provided with an adjustable heating plate, which can be directly fixed inside the mold in the form of a heating plate. Corresponding thermocouples are also arranged at intervals between the heating plates to perform separate temperature regulation at different positions of the mold cavity to meet various injection molding requirements. When the insulation layer is injected, the heating plate heats the stator core so that the surface temperature of the stator core is higher than the melting point of the rubber layer (170°C), which is convenient for subsequent molding and demolding of the rubber layer.

[0053] By setting a low-temperature water channel in the injection molding mold of the insulating layer, compared with the prior art, the fluid flowing through the mold cavity can be cooled, and the low-temperature water channel is divided into multiple sections to cool different areas of the mold cavity respectively. By adjusting the cooling speed of the fluid flowing through the mold cavity, the cooling speed of different parts of the mold molding cavity can be controlled separately, thereby ensuring that the molded insulating layer meets the corresponding process requirements;

[0054] By setting a multi-section channel in the mold molding cavity, the mold can ensure that the fluid in the overmolding molding cavity can fully cool the entire molding cavity, and can adjust different positions separately, further improving the cooling effect of the molding cavity;

[0055] By arranging a flow guide structure in the mold molding cavity, the overall temperature can be controlled by utilizing the flow direction of high-temperature and low-temperature water, and the flow guide structure can make the temperature in the mold cavity uniform.

[0056] By setting up the flow guide structure of the mold cavity, during the injection molding process, hot water is used to flow through the inner surface of the mold molding cavity, and cooling water is used to dissipate heat on the outer surface, ensuring that the insulation layer is quickly heated while the coating material is not damaged. At the same time, the cooling speed and temperature inside and outside the rubber layer can be controlled to ensure that the hollow structure of the insulation layer is uniformly formed and the quality of the parts is improved. At the same time, multi-layer cooling is used to make the thermal conductivity and the molding cavity structure more uniform, which can effectively avoid the deformation of parts caused by thermal cycles, greatly improve the cooling efficiency, and reduce energy consumption.

[0057] By closely combining the flow guide structure with the mold structure in the mold forming cavity, the influence of fluid flow changes on temperature control can be effectively reduced. For example, a flow guide structure is set in the cooling channel. The flow guide structure changes the shape of the channel so that high-temperature or low-temperature water flows evenly in the mold forming cavity, which can effectively reduce the influence of fluid flow changes on temperature control.

[0058] The flow guide structure is closely integrated with the injection flow channel in the mold cavity, which ensures smooth injection and uniform heat conduction.

[0059] By setting guide lines in the guide structure, the hot fluid and the cold fluid can form vortices inside the injection cavity, which can improve the heat exchange efficiency of the hot fluid and the cold fluid. The guide plate adopts an insulation plate design, which can effectively reduce the temperature of the cold fluid while ensuring the molding of the insulation layer.

[0060] A multi-section channel is set in the insulating layer molding cavity, which controls the direction of the fluid through dislocation and adjacent gaps, and can effectively reduce the impact of fluid flow changes on temperature control;

[0061] By setting up a multi-section channel, the cooling water enters the multiple sections of the separate channels of the molding cavity respectively, which can realize the cooling of different areas of the entire molding cavity, avoiding the influence of temperature difference on the molding effect. The segmented setting can better cool the outer side of the molded iron core, so that the thickness of the insulation layer is uniform. During the circulation process, the cooling water passes through the heat conduction plate, and the temperature gradually increases, transferring the heat to the cooling water and the stator core. At the same time, the temperature is monitored and controlled through the heat conduction plate;

[0062] The temperature control module combined with the insulation layer injection molding cavity can realize accurate control of the temperature of the insulation layer injection molding mold. The temperature control module controls the rising and falling speed of the mold temperature through the temperature control module to realize the water cooling process of the insulation layer, thereby improving the molding efficiency of the molding mold. By setting the temperature control module, workers can conveniently control the temperature of the insulation layer molding mold in real time to meet different insulation layer cooling requirements;

[0063] By setting the mold forming cavity to a multi-stage type and setting a temperature control module to regulate the temperature of the insulation layer, it can be cooled evenly and quickly after the encapsulation is completed, so that the insulation layer can reach a specified curing speed. At the same time, by setting a cooling module, the encapsulation layer can be cooled before it is fully formed, avoiding deformation or damage to the encapsulation layer after forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0065] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0066] Figure 1 A schematic diagram of a double-layer water channel structure for an insulation layer injection mold provided by an embodiment of the present invention;

[0067] Figure 2 A schematic diagram of a low-temperature water channel and a high-temperature water channel of a double-layer water channel structure for an insulation layer injection mold provided by an embodiment of the present invention;

[0068] Figure 3 A schematic diagram of a double-layer water channel structure injection port and a mold forming cavity for an insulation layer injection mold provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0069] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0070] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, and therefore the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the form, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0071] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the 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 understood as a limitation on the invention.

[0072] See also Figure 1 The present invention provides a double-layer water channel structure for an insulation layer injection mold, a schematic diagram of a double-layer water channel structure for an insulation layer injection mold, comprising the following components: a heat supply module 1, a cold supply module 2, a mold forming cavity 3, a mold cavity 4, an injection port 5, a high-temperature water channel 6, a low-temperature water channel 7 and a glue feed channel 8;

[0073] The mold forming cavity 3 is arranged inside the mold cavity 4;

[0074] The mold forming cavity 3 is used to limit the shape of the rubber layer, and the mold forming cavity 3 is connected to the rubber inlet channel 8 through the injection port 5;

[0075] The high temperature water channel 6 connects the heat supply module 1 and the mold cavity 4;

[0076] The low-temperature water circuit 7 connects the cold supply module 2 and the mold cavity 4 .

[0077] By arranging two sets of water channels on the mold, the mold cavity 4 can be cooled or preheated at the same time, thereby improving work efficiency and flexibly setting the specific number of double layers according to usage requirements.

[0078] Through the double-layer water channel structure, the mold can be preheated or cooled at the same time. According to the needs of the process, the mold can be cooled or preheated to ensure that the molding cavity reaches the expected temperature, thereby molding qualified rubber bags and improving production efficiency.

[0079] The high-temperature water channel 6 is provided with a plurality of channels, and the low-temperature water channel 7 is provided with a plurality of channels.

[0080] In order to ensure the uniformity of mold preheating or cooling, the high-temperature water channel 6 and the low-temperature water channel 7 both adopt a multi-channel design. By setting multiple channels, the mold can be uniformly preheated or cooled at the same time, thereby improving the forming effect of the mold and ensuring the quality of the rubber coating.

[0081] The shape of the mold forming cavity 3 is set to be multi-stage.

[0082] In a specific embodiment, by setting a multi-section mold forming cavity 3, the rubber coating layer is divided into three small sections, namely section A, section B and section C, and the rubber coating layers of different lengths L1, L2, and L3 are molded respectively, thereby meeting the process requirements of segmented injection molding of the insulation layer. At the same time, the number of injection ports 5 and glue feed channels 8 can be flexibly set according to needs.

[0083] A, B, and C represent three different injection ports. When one section needs to be molded separately, only port A needs to be used for injection. When two sections of rubber coating need to be compounded in the mold cavity, port AB needs to be used for injection. When three sections of rubber coating need to be compounded in the mold cavity, port ABC can be used for injection.

[0084] The structure of the present invention can meet three typical overmolding methods and is suitable for the existing injection molding process of the insulating layer. Different water channel structures are set at different positions of the mold cavity 4, and overmolding layers of different lengths can be formed, which meets the current production needs. It can realize the process requirements of preheating or cooling the mold cavity 4, and the number of water channels can be flexibly set according to the process requirements.

[0085] It also includes a temperature regulation module, which includes an adjustable heating plate and a temperature control device. The adjustable heating plate is fixed to the inner surface of the mold cavity 4 by bolts, and the temperature control device is arranged outside the mold cavity 4. The adjustable heating plate and the temperature control device communicate with each other.

[0086] Considering that different rubber coating layers require different temperatures and need to be kept at the same temperature, a temperature adjustment module is provided to facilitate temperature adjustment of the mold cavity 4 as needed, thereby molding rubber coating layers of different temperatures.

[0087] The adjustable heating plate wraps the surface of the mold cavity 4. The heating plate is made of high temperature resistant material, which is convenient for setting different temperatures according to the requirements of the injection molding coating layer, and can achieve reasonable use of temperature and thermal energy, thereby effectively improving the use efficiency of the injection mold.

[0088] It can accept instructions from the temperature control system and adjust the temperature quickly and accurately as needed. When the temperature is too high, high-temperature hot water is supplied to the cavity; when the temperature is too low, low-temperature hot water is supplied to the mold cavity.

[0089] A plurality of adjustable heating plates may also be provided, and each heating plate may be provided with a different temperature adjustment range, thereby increasing the applicable range of the mold and improving the versatility of the present invention.

[0090] It also includes a replaceable cooling module, which is fixed in the mold cavity 4 through a slot. The replaceable cooling module is used to assist in cooling the mold molding cavity 3 during the injection molding process according to cooling requirements.

[0091] Different rubber coating layers have different requirements for cooling. By providing a replaceable cooling module, the cooling module can be quickly replaced according to actual needs, thereby improving the application scope of the mold and the versatility of the present invention.

[0092] It also includes a vacuum auxiliary module, which is connected to the mold cavity 3 through a pipeline and is used to remove air from the cavity during the injection molding process.

[0093] By setting up a vacuum auxiliary module, the air in the mold cavity can be effectively discharged, reducing quality and product defects caused by air during the injection molding process, thereby improving product production efficiency.

[0094] A flow guiding structure is provided in the mold cavity 4 .

[0095] In some embodiments of the present invention, a guide structure is provided to prevent deformation of the mold. When the rubber coating layer is formed, the guide structure can guide the injected rubber to flow through a certain path, so that the cooling and holding time of each area of ​​the rubber coating layer is consistent, thereby reducing the defects of the rubber coating layer in different areas.

[0096] A double-layer water channel method using an insulating layer injection mold comprises the following steps:

[0097] Install the stator core in the mold forming cavity 3 and fix it;

[0098] Open the high-temperature water channel 6 module, and hot water enters the mold to increase the mold temperature;

[0099] Turn on the vacuum auxiliary module to remove the air in the cavity;

[0100] Start injection molding;

[0101] Finish the injection molding and open the low-temperature water channel 7 to quickly lower the mold temperature;

[0102] After the insulation layer is completely cured, open the mold and take out the molded product.

[0103] The high-temperature water channel 6 is provided with a plurality of channels, and the low-temperature water channel 7 is provided with a plurality of channels. In order to ensure the uniformity of preheating or cooling the mold, the high-temperature water channel 6 and the low-temperature water channel 7 are both designed with multiple channels. By setting multiple channels, the mold can be uniformly preheated or cooled at the same time, thereby improving the forming effect of the mold, so as to meet the requirements of the coating process of different lengths and thicknesses, and improve the quality qualification rate of the coating.

[0104] In a specific embodiment, A, B, and C represent different injection ports, respectively. When one of the sections needs to be molded separately, only port A is needed for injection. When two sections of the rubber coating need to be compounded in the mold cavity, port AB is selected for injection. When three sections of the rubber coating need to be compounded in the mold cavity, port ABC can be selected for injection.

[0105] In a specific embodiment, if the mold is a three-stage mold forming cavity 3, then Figure 1 The corresponding lengths of the rubber coating layers shown are 1L1, 1L2, and 1L3, respectively, and the minimum width of the rubber coating layers is not less than the minimum width of the mold forming cavity 3.

[0106] like Figure 1 As shown, the structure of the high-temperature water channel 6 and the low-temperature water channel 7 in contact with the mold cavity 4 can be annular or semi-annular in design, wrapping the mold forming cavity 3, so that the mold can be better heated or cooled. If a full-annular design is adopted, the mold can be heated or cooled more quickly and evenly.

[0107] By using the method of the present invention, the number of high-temperature water channels 6 and low-temperature water channels 7 can be flexibly controlled according to the needs of the process, thereby achieving the effect of preheating or cooling the mold, and the utilization rate of thermal energy is high, meeting the process requirements of various different rubber layer lengths, and having strong versatility and operability.

[0108] Based on the double water channel structure, the present invention adopts an adjustable heating plate and a replaceable cooling module respectively, and forms rubber layers of different temperatures in the mold cavity according to process requirements, thereby improving the usability of the mold and the versatility of the present invention.

[0109] The present invention, based on the dual water channel structure, can solve the defects existing in the mold injection molding process by setting a vacuum auxiliary module, reduce the quality defects of the rubber coating layer caused by the presence of bubbles or pores, and thus improve the production efficiency of the product.

[0110] In a specific embodiment, a double-layer water channel structure for an insulation layer injection mold includes a hot supply module 1, a cold supply module 2, a mold forming cavity 3, a mold cavity 4, a high-temperature water channel 6, a low-temperature water channel 7 and a vacuum auxiliary module.

[0111] S0 starts the vacuum auxiliary module to ensure that the air in the cavity is effectively removed and reduce the risk of bubble generation;

[0112] S1 installs the stator core in the mold cavity 3 and uses a fixing device to ensure its stability;

[0113] S2 turns on the high-temperature water channel 6 module, and delivers hot water to the mold cavity 4 through the high-temperature water channel 6. The water temperature is set to 150°C to ensure that the plastic raw material in the mold has good fluidity during injection molding;

[0114] S3 After the mold reaches the set temperature, the injection molding machine is turned on to inject the injectable fluid into the mold cavity 3 through the injection channel 8. The injection molding process lasts for about 30 seconds to ensure that the material fully fills the mold;

[0115] S4 After the injection molding is completed, the cold supply module 2 is immediately turned on to deliver the coolant to the mold cavity 4 through the low-temperature water channel 7, and the water temperature is set to 10°C to promote the rapid solidification of the molding material;

[0116] S5 maintains the operation of the low-temperature water circuit 7 and continues to cool the mold for about 2 minutes to ensure that the insulation layer is completely cured;

[0117] S6 After the insulation layer is completely cured, turn off the cooling system, open the mold, and check the appearance and performance of the finished product to ensure there are no bubbles or defects.

[0118] 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 familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0119] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

Claims

1. A double-layer water channel structure for an insulation layer injection mold, characterized in that: It includes a heat supply module, a cold supply module, a mold forming cavity, a mold chamber, an injection port, a high-temperature water channel, a low-temperature water channel and a glue feed channel connected thereto; The mold forming cavity is arranged inside the mold cavity; The mold forming cavity is used to limit the shape of the rubber layer, and the mold forming cavity is connected to the inlet through the injection port. Glue flow channel connection; The high temperature water channel connects the heat supply module and the mold cavity; The low temperature water circuit connects the cold supply module and the mold cavity; It also includes a replaceable cooling module, which is fixed in the mold cavity through a slot, and is used to cool the mold molding cavity according to cooling requirements.

2. A double-layer water channel structure for an insulation layer injection mold according to claim 1, characterized in that: The high-temperature water channel is provided with a plurality of channels, and the low-temperature water channel is provided with a plurality of channels.

3. The double-layer water channel structure for an insulation layer injection mold according to claim 1, characterized in that: The shape of the mold forming cavity is set to be multi-stage.

4. A double-layer water channel structure for an insulation layer injection mold according to claim 1, characterized in that: It also includes a temperature regulation module, which includes an adjustable heating plate and a temperature control device. The adjustable heating plate is fixed to the inner surface of the mold cavity by bolts, and the temperature control device is arranged outside the mold cavity. The adjustable heating plate and the temperature control device communicate with each other.

5. The double-layer water channel structure for an insulation layer injection mold according to claim 1, characterized in that: It also includes a vacuum auxiliary module, which is connected to the mold cavity through a pipeline and is used to remove air in the cavity during the injection molding process.

6. The double-layer water channel structure for an insulation layer injection mold according to claim 1, characterized in that: A flow guiding structure is arranged in the mold cavity.

7. A double-layer water channel method using an insulating layer injection mold, characterized in that: The following steps are involved: Install the stator core in the mold cavity and fix it; Open the high temperature water circuit; Turn on the vacuum auxiliary module to remove the air in the cavity; After the mold reaches a predetermined temperature, injection molding begins; After the injection molding is completed, the low-temperature water circuit is opened, cold water enters the mold cavity for cooling, and a replaceable cooling module is installed to assist in cooling the mold; After the insulation layer is completely cured, the mold is opened and the molded product is taken out, and the replaceable cooling module is removed.

8. A double-layer water channel method using an insulating layer injection mold according to claim 7, characterized in that: Before injection molding, turn on the vacuum assist module to remove air from the cavity.

9. A double-layer water channel method using an insulating layer injection mold according to claim 7, characterized in that: After the insulation layer is completely cured, open the mold and take out the molded product.

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