Automobile steering wheel forming device and technology thereof

Abstract

The invention discloses an automobile steering wheel forming device and technology, and belongs to the field of automobile manufacturing. The mold core is provided with an injection molding cavity corresponding to the automobile steering wheel in shape; the lower mold forms a mold cavity corresponding to the mold core so as to install the mold core; the upper mold is arranged opposite to the lower mold and forms a lug boss corresponding to the injection molding cavity; the cooling pipes are respectively arranged in the upper mold and the lower mold; the pump body is connected with the cooling pipe so as to provide flowing power for a cooling medium in the cooling pipe; the thermometer is arranged in the upper mold / lower mold to detect the temperature of the mold core; the upper mold and the lower mold are each provided with a cooling cavity for laying of a cooling pipe. The pump body comprises a containing cavity communicating with the cooling pipe and a flow guide plate rotationally arranged in the containing cavity. A refrigeration sheet is further arranged in the containing cavity and used for controlling the temperature of the cooling medium. The automobile steering wheel forming device has the beneficial effect that the cooling speed can be increased, so that the forming efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile manufacturing, and in particular to an automobile steering wheel molding device and a process thereof. Background Art

[0002] Steering wheel cover refers to the round cover on the steering wheel of the car. Most common car steering wheel covers are made of leather or velvet, which feel more comfortable. There is also a kind of steering wheel cover made of plastic. Plastic steering wheel cover is easy to disassemble, replace and clean because of its elasticity. The prior art discloses some invention patents in the field of injection molding technology for steering wheel covers, among which Chinese patent CN106956401A discloses a plastic steering wheel cover injection mold and a demoulding method thereof, including an upper mold, a lower mold and a demoulding structure, wherein the upper mold and the lower mold are respectively provided with an arc cavity that is engaged with each other to form an annular steering wheel cover and a disc cavity that is connected to the edge of the steering wheel cover on one side of the arc cavity, the demoulding structure is arranged on the lower mold, and the demoulding structure includes a demoulding module that is movably arranged corresponding to the disc cavity, and the demoulding module protrudes toward the disc cavity when it is movable; The above technical solution can facilitate demolding of the steering wheel after injection molding, but it is still cooled by conventional means during the molding process; this will reduce the molding efficiency when large-scale injection molding is required; therefore, it is necessary to design an automobile steering wheel molding device that can speed up the cooling time to improve the molding efficiency. Summary of the invention

[0003] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0004] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a vehicle steering wheel molding device, including: A mold core having an injection molding cavity corresponding to the shape of a car steering wheel; A lower mold is formed with a mold cavity corresponding to the mold core to install the mold core; An upper mold, arranged opposite to the lower mold and forming a convex portion corresponding to the injection cavity; Cooling pipes are respectively arranged in the upper mold and the lower mold; A pump body connected to the cooling pipe to provide a flow power for the cooling medium inside the cooling pipe; Thermometer, set in the upper mold / lower mold to detect the core temperature; The upper mold and the lower mold both have cooling cavities for laying cooling pipes; the pump body includes a receiving cavity connected to the cooling pipe and a guide plate rotatably arranged in the receiving cavity; a cooling plate is also arranged in the receiving cavity to control the temperature of the cooling medium; During injection molding, the pump body is driven to start, so that the cooling medium flows in the cooling pipe, which can cool the mold core during injection molding; the temperature of the mold core can be monitored in real time by setting the thermometer, so that the through cooling speed can be implemented; the thermometer is electrically connected to the pump body, so that the pump body can adjust the power of the pump body according to the mold core temperature monitored in real time by the thermometer; in this way, when the thermometer measures that the mold core temperature drops slowly, the pump body can speed up the flow rate of the cooling medium in the cooling pipe, thereby accelerating the cooling speed to improve the molding efficiency.

[0005] In some embodiments, a rotating shaft fixedly connected to the guide plate is rotatably disposed at the bottom of the accommodating chamber; A driver for driving the rotating shaft to rotate is installed outside the pump body; The driver is electrically connected to the thermometer; Through the design of the above scheme, the driver can drive the rotating shaft to rotate, so that the cooling medium in the accommodating cavity can be stirred, so that the cooling medium that has absorbed the heat of the mold core and the cooling medium that has not absorbed the heat can merge with each other, thus making the temperature of the cooling medium more uniform.

[0006] In some embodiments, a guide ring is further provided in the accommodating cavity; The central axis of the guide ring is parallel to the central axis of the rotating shaft and is arranged on the same horizontal plane so that the guide ring can rotate eccentrically in the accommodating cavity; Wherein, at least a portion of the outer wall of the guide ring is always in contact with the inner wall of the accommodating cavity; By setting the above scheme, when the rotating shaft starts to rotate, it can drive the guide ring to flow, thereby realizing the flow of the cooling medium; with such a setting, the cooling medium can be disturbed.

[0007] In some embodiments, the guide ring forms an opening corresponding to the guide plate; The guide plate passes through the opening and contacts the inner wall of the accommodating cavity; Wherein, a sealing member is fixedly arranged on the surface of the opening; Through the design of the above solution, the setting of the sealing member can prevent the cooling medium in the accommodating cavity from entering the inner ring of the guide ring, thereby improving the sealing performance.

[0008] In some embodiments, the guide ring forms a refrigeration cavity for containing a refrigerant; The surface of the refrigeration cavity close to the accommodating cavity forms a heat conducting portion; The heat conducting parts are evenly distributed along the surface of the refrigeration cavity; Through the design of the above scheme, the refrigeration cavity is arranged in the guide ring, which can enable the guide ring to cool the cooling medium when rotating; in this way, the cooling medium rises in temperature after absorbing the heat of the mold core, and then cools down again during the guide process of the guide ring so that the cooling medium can always maintain the optimal cooling temperature.

[0009] In some embodiments, the rotating shaft forms a groove for mounting a cooling fin; The inner wall of the guide ring forms a piston tube connected to the refrigeration chamber; A heat-conducting rod inserted into the piston tube portion is fixedly arranged on the rotating shaft; The heat conducting rod is in contact with the cooling plate; Through the design of the above scheme, when the rotating shaft rotates, the heat-conducting rod can move in the piston tube, so that the coolant can flow continuously in the refrigeration chamber, so that the refrigerant can contact the heat-conducting rod; the heat-conducting rod contacts the refrigeration plate so that the heat-conducting rod can transfer the temperature of the refrigeration plate to the refrigerant, thereby realizing the temperature regulation of the refrigerant by the refrigeration plate.

[0010] In some embodiments, the inner wall of the accommodating cavity forms a liquid inlet and a liquid outlet that are docked with the cooling tube; The liquid inlet and the liquid outlet are arranged opposite to each other.

[0011] In some embodiments, the lower mold is provided with a docking port, which is connected to a cooling pipe located in the lower mold; The upper mold is provided with a joint corresponding to the docking interface; Through the design of the above solution, the cooling pipes located in the upper mold and the lower mold can be connected after the upper mold and the lower mold are closed.

[0012] In some embodiments, a molding process of a vehicle steering wheel molding device The following steps are involved: S1, driving the upper mold to move and close the lower mold, and the injection molding material flows into the mold core through the injection hole to complete the injection molding step; at this time, the temperature of the mold core is 700°C, which can keep the material in liquid state; S2, starting the driving member to drive the rotating shaft of the pump body to start rotating, so that the cooling medium flows in the cooling pipe to cool the mold core; S3. The thermometer detects the temperature of the mold core in real time and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the driver will be increased, and the flow speed of the cooling medium can increase the cooling speed; S4. The thermometer detects the temperature of the mold core in real time and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the refrigeration plate will be increased, which is conducive to the cooling of the coolant; S5. After the temperature of the mold core measured by the thermometer drops to room temperature, the upper mold is moved for demoulding; and the molded steering wheel blank is polished to remove burrs to form a finished product; In some implementation schemes, in step S3, a micro fan is provided to guide external air into the cooling chamber; such a design can cool the mold core by air cooling, which can further increase the cooling speed of the mold core and accelerate molding.

[0013] By setting the above process, the cooling efficiency can be adjusted according to the cooling speed of the mold core, thereby improving the molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0015] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0016] In the attached picture: Figure 1 is an overall schematic diagram according to an embodiment of the present application; Figure 2 It is a structural schematic diagram of a part of the embodiment, mainly showing the partial structure of the lower mold and the mold core; Figure 3 It is a structural schematic diagram of a part of the embodiment, mainly showing the distribution structure of the cooling pipe; Figure 4 It is a structural schematic diagram of a part of the embodiment, mainly showing a part of the internal structure of the pump body; Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the cooling cavity and the refrigerator cavity; Figure 6 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the heat conducting part; Figure 7 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the piston tube and the heat-conducting rod.

[0017] 1. Mold core; 2. Lower mold; 3. Upper mold; 4. Cooling pipe; 5. Mold cavity; 6. Raised part; 7. First cooling cavity; 8. Second cooling cavity; 9. Ventilation duct; 10. Micro fan; 11. Docking port; 12. Connector; 13. Pump body; 14. Accommodating cavity; 15. Rotating shaft; 16. Guide plate; 17. Driver; 18. Guide ring; 19. Liquid inlet; 20. Liquid outlet; 21. Opening; 22. Seal; 23. Refrigeration cavity; 24. Heat transfer part; 25. Refrigeration plate; 26. Piston tube; 27. Heat transfer rod. DETAILED DESCRIPTION

[0018] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0019] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0020] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0021] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0022] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Embodiment 1

[0023] Reference Figures 1 to 7 , a car steering wheel molding device, comprising: a mold core 1, a lower mold 2, an upper mold 3, and a cooling pipe 4; The core 1 has an injection cavity corresponding to the shape of a car steering wheel, and the lower mold 2 forms a cavity 5 corresponding to the core 1, and the core 1 is fixedly arranged in the cavity 5; wherein the fixing method can be bolts, pins, etc., to ensure that the core 1 and the cavity 5 can be stable, and the relative positions of the core 1 and the cavity 5 can be ensured to be accurate by means of bolts or pins; the upper mold 3 forms a protrusion 6 corresponding to the injection cavity and is arranged opposite to the lower mold 2, and is movably arranged above the upper mold 3 to achieve mold closing; specifically, a guide hole is formed on the surface of the lower mold 2, and a sliding rod corresponding to the wire hole is fixedly arranged on the surface of the upper mold 3 opposite to the lower mold 2; more specifically, the surface of the upper mold 3 has an injection hole that penetrates into the injection cavity, and the injection molten metal used for steering wheel molding is introduced into the injection cavity through the injection hole.

[0024] In another specific embodiment, the lower mold 2 forms a first cooling cavity 7, which corresponds to the shape of the mold cavity 5 so as to completely wrap the mold core 1; the upper mold 3 forms a second cooling cavity 8, which corresponds to the shape of the protrusion 6 so as to completely wrap the protrusion 6; wherein the cooling pipe 4 is laid on the inner wall of the first cooling cavity 7 and the second cooling cavity 8 respectively, and is distributed in a continuous S shape on the inner wall of the first cooling cavity 7 and the second cooling cavity 8 so as to increase the cooling range of the cooling pipe 4; the cooling pipe 4 has a flowable cooling medium, which is a sodium chloride solution with a freezing point of -19°C; through the chlorination The flow energy of sodium can cool the mold core 1 and improve the speed of steering wheel molding; preferably, the upper mold 3 and the lower mold 2 are also provided with ventilation pipes 9 respectively connected to the first cooling cavity 7 and the second cooling cavity 8, and the ventilation pipes 9 are installed with micro fans 10; through the above-mentioned technical scheme, when cooling, the external wind is sent into the first cooling cavity 7 and the second cooling cavity 8 through the ventilation pipes 9 by the micro fans 10; in this way, the temperature of the external wind drops after contacting with the cooling pipe 4, and the contact with the inner wall of the first cooling cavity 7 and the inner wall of the second cooling cavity 8 can be fully cooled, further improving the cooling effect.

[0025] In another specific embodiment, the lower mold 2 has a docking port 11 on its surface, and the docking port 11 is connected to the cooling pipe 4 located in the lower mold 2; the upper mold 3 is provided with a joint 12 corresponding to the docking port 11, and the joint 12 is connected to the cooling pipe 4 located in the upper mold 3; in this way, after the upper mold 3 and the lower mold 2 are closed, the joint 12 is inserted into the docking port 11 so that the cooling pipes 4 located in the upper mold 3 and the lower mold 2 are connected; In another specific embodiment, a car steering wheel molding device further includes a pump body 13 for driving the flow of a cooling medium and a thermometer for detecting the mold core 1; wherein the pump body 13 includes a housing chamber 14, the housing chamber 14 is configured to be circular, and a rotating shaft 15 is rotatably arranged on the inner bottom surface; a guide plate 16 is fixedly arranged on the rotating shaft 15; a driver 17 for driving the rotating shaft 15 to rotate is installed on the outside of the pump body 13, and the driver 17 is a motor, which can drive the rotating shaft 15 to rotate and drive the guide plate 16 to rotate, so as to drive the flow of the cooling medium in the housing chamber 14; more specifically, a guide ring 18 is also rotatably arranged in the housing chamber 14, and the guide ring 18 has a central axis, and the central axis and the central axis of the rotating shaft 15 are arranged parallel to the central axis of the rotating shaft 15 on the same horizontal plane so that the guide ring 18 is eccentrically arranged in the housing chamber 14, and the side wall of the guide ring 18 is always in contact with the inner wall of the housing chamber 14 at least partially; Specifically, the inner wall of the accommodating chamber 14 forms a liquid inlet 19 and a liquid outlet 20 that are connected to the cooling tube 4; wherein, a surface perpendicular to the bottom surface of the accommodating chamber 14 and bisecting the two sides of the accommodating chamber 14 is defined as a reference plane, and the liquid inlet 19 and the liquid outlet 20 both have a central axis, and the liquid inlet 19 and the liquid outlet 20 are coaxially arranged, and the central axis is located on one side of the reference plane; more specifically, the inner wall of the guide ring 18 is radially penetrated to form an opening 21 corresponding to the guide plate 16; the guide plate 16 passes through the opening 21 and contacts the inner wall of the accommodating chamber 14; through According to the arrangement of the above scheme, when the rotating shaft 15 starts to rotate, the guide ring 18 can be driven to rotate eccentrically in the accommodating chamber 14, and the side wall of the guide ring 18 can always contact the inner wall of the accommodating chamber 14 during the eccentric rotation, so that the cooling medium can enter the accommodating chamber 14 from the liquid inlet 19 and then enter the cooling pipe 4 again from the liquid outlet 20; wherein, a sealing member 22 is also arranged at the opening 21, and the sealing member 22 can be made of a flexible material such as rubber or silicone, so as to prevent the cooling medium from flowing into the inner ring of the guide ring 18 from the gap between the guide plate 16 and the opening 21; In another specific embodiment, the guide ring 18 further forms a refrigeration cavity 23 for accommodating a refrigerant for cooling a refrigerant medium, wherein the refrigerant is mercury with good thermal conductivity; wherein a heat conducting portion 24 is formed on the surface of the refrigeration cavity 23 close to the accommodating cavity 14, and the heat conducting portion 24 is a circular arc groove; the heat conducting portion 24 is evenly distributed along the inner wall of the accommodating cavity 14; the heat conducting portion 24 can increase the heat conducting area by setting the heat conducting portion 24, so that the refrigerant can cool the cooling medium; thus, the cooling medium can always maintain the best cooling temperature; more specifically, the rotating shaft 15 forms a groove for installing a cooling plate 25, and the cooling plate 25 is fixedly installed in the groove, and the cooling plate 25 is a semiconductor cooling plate 25 that can be purchased on the market, The refrigerant can be cooled; the inner wall of the guide ring 18 also forms a piston tube 26 connected to the refrigeration chamber 23; a heat-conducting rod 27 inserted into the inner part of the piston tube 26 is fixedly set on the side wall of the rotating shaft 15; specifically, the heat-conducting rod 27 contacts the refrigeration plate 25 so that the refrigeration plate 25 can cool the heat-conducting rod 27; the heat-conducting rod 27 is slidably connected to the piston tube 26, and the side wall of the heat-conducting rod 27 fits with the inner wall of the piston tube 26; with this arrangement, when the guide ring 18 starts to rotate eccentrically, the heat-conducting rod 27 can slide in the piston tube 26, and the refrigerant can flow in the refrigeration chamber 23 during the sliding, so that the refrigerant can evenly contact the heat-conducting rod 27, so that the refrigerant can transfer heat.

[0026] Through the above-mentioned design, when in use, the cooling medium flows into the accommodating cavity 14. When in motion, the outer wall of the guide ring 18 comes into contact with the cooling medium and the temperature drops. When injection molding, the cooling medium absorbs heat and the temperature rises. In this way, the cooling medium can always be kept at a constant temperature. In another embodiment, a thermometer is provided on the lower mold 2, and the thermometer is used to set the temperature of the core 1; wherein, a central processing module electrically connected to the thermometer is also provided in the pump body 13, and the central processing module receives and analyzes the electrical signal transmitted by the thermometer; the central processing module is also electrically connected to the driver 17 to control the power of the driver 17; through the design of the above scheme, the thermometer detects the temperature of the core 1 in real time when the core 1 is cooled, and feeds the temperature back to the central processing module; the central processing module adjusts the temperature according to the temperature drop rate of the core 1; if the measured drop rate is analyzed by the central processing module and it is found that the drop is slow, the power of the driver 17 will be increased, and the flow rate of the cooling medium can increase the cooling rate; in addition, the central processing module is also electrically connected to the refrigeration plate 25 to control the power of the refrigeration plate 25, so that the temperature of the refrigerant can be stabilized. Embodiment 2

[0027] A process for forming the steering wheel, comprising the following steps: S1, driving the upper mold 3 to move and close the mold with the lower mold 2, and the injection molding material flows into the mold core 1 through the injection hole to complete the injection molding step; at this time, the temperature of the mold core 1 is 700°C, which can keep the material in liquid state; S2, starting the driving member to drive the rotating shaft 15 of the pump body 13 to start rotating, so that the cooling medium flows in the cooling pipe 4 to cool the mold core 1; S3, the thermometer detects the temperature of the mold core 1 in real time, and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core 1; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the driver 17 will be increased, and the flow speed of the cooling medium can be accelerated to increase the cooling speed; S4, the thermometer detects the temperature of the mold core 1 in real time, and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core 1; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the refrigeration plate 25 will be increased, which is conducive to the cooling of the coolant; S5. After the temperature of the mold core 1 measured by the thermometer drops to room temperature, the upper mold 3 is moved for demoulding; and the molded steering wheel blank is polished to remove burrs to form a finished product. Embodiment 3

[0028] A process for forming the steering wheel, comprising the following steps: S1, driving the upper mold to move and close the lower mold, and the injection molding material flows into the mold core through the injection hole to complete the injection molding step; at this time, the temperature of the mold core is 700°C, which can keep the material in liquid state; S2, starting the driving member to drive the rotating shaft of the pump body to start rotating, so that the cooling medium flows in the cooling pipe to cool the mold core; S3. The thermometer detects the temperature of the mold core in real time and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the driver will be increased, and the flow speed of the cooling medium can increase the cooling speed; S4. The thermometer detects the temperature of the mold core in real time and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the refrigeration plate will be increased, which is conducive to the cooling of the coolant; S5. The thermometer detects the temperature of the mold core in real time and transmits the temperature signal to the central processing module; the central processing module detects the temperature drop speed of the mold core; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the micro fan will be started to guide the external wind into the cooling chamber to achieve air cooling, which can increase the cooling speed; S6. After the temperature of the mold core measured by the thermometer drops to room temperature, the upper mold is moved for demoulding; and the molded steering wheel blank is polished to remove burrs to form a finished product.

[0029] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A vehicle steering wheel molding device, comprising: A mold core having an injection molding cavity corresponding to the shape of a car steering wheel; A lower mold, forming a mold cavity corresponding to the mold core to install the mold core; An upper mold, arranged opposite to the lower mold and forming a convex portion corresponding to the injection cavity; Characterized in that, the automobile steering wheel molding device also includes: Cooling pipes are respectively arranged in the upper mold and the lower mold; A pump body connected to the cooling pipe to provide a flow power for the cooling medium inside the cooling pipe; A thermometer is disposed in the upper mold / the lower mold to detect the mold core temperature; Wherein, both the upper mold and the lower mold have a cooling cavity for laying the cooling pipe; the pump body includes a accommodating cavity connected to the cooling pipe and a guide plate rotatably arranged in the accommodating cavity; a refrigeration plate is also arranged in the accommodating cavity to control the temperature of the cooling medium.

2. The automobile steering wheel molding device according to claim 1, characterized in that: A rotating shaft fixedly connected to the guide plate is rotatably arranged at the bottom of the accommodating chamber; A driver for driving the rotating shaft to rotate is installed outside the pump body; The driver is electrically connected to the thermometer.

3. The automobile steering wheel molding device according to claim 2, characterized in that: A guide ring is also arranged in the accommodating cavity; The central axis of the guide ring is arranged parallel to the center axis of the rotating shaft on the same horizontal plane so that the guide ring can rotate eccentrically in the accommodating cavity; Wherein, at least a portion of the outer wall of the guide ring is always in contact with the inner wall of the accommodating cavity.

4. The automobile steering wheel molding device according to claim 3, characterized in that: The guide ring forms an opening corresponding to the guide plate; The guide plate passes through the opening and contacts the inner wall of the accommodating cavity; Wherein, a sealing member is fixedly arranged on the surface of the opening.

5. The automobile steering wheel molding device according to claim 4, characterized in that: The guide ring forms a refrigeration cavity for accommodating refrigerant; The surface of the refrigeration cavity close to the accommodating cavity forms a heat conducting portion; The heat conducting parts are evenly distributed along the surface of the refrigeration cavity.

6. The automobile steering wheel molding device according to claim 5, characterized in that: The rotating shaft forms a groove for mounting the cooling fin; The inner wall of the guide ring forms a piston tube connected to the refrigeration chamber; A heat-conducting rod inserted into the piston tube portion is fixedly arranged on the rotating shaft; The heat conducting rod is in contact with the cooling fin.

7. The automobile steering wheel molding device according to claim 5, characterized in that: The inner wall of the accommodating cavity forms a liquid inlet and a liquid outlet connected to the cooling pipe; The liquid inlet and the liquid outlet are arranged opposite to each other.

8. The automobile steering wheel molding device according to claim 6, characterized in that: The lower mold is provided with a docking port, and the docking port is communicated with the cooling pipe located in the lower mold; The upper mold is provided with a joint corresponding to the docking port.

9. A molding process for an automobile steering wheel molding device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, driving the upper mold to move and close the lower mold, and the injection molding material flows into the mold core through the injection hole to complete the injection molding step; at this time, the temperature of the mold core is 700°C, which can keep the material in liquid state; S2, starting the driving member to drive the rotating shaft of the pump body to start rotating, so that the cooling medium flows in the cooling pipe to cool the mold core; S3. The thermometer detects the temperature of the mold core in real time and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the driver will be increased, and the flow speed of the cooling medium can increase the cooling speed; S4. The thermometer detects the temperature of the mold core in real time and transmits the temperature signal to the central processing module; the central processing module determines the temperature drop speed of the mold core; if the measured drop speed is analyzed by the central processing module and it is found that the drop speed is slow, the power of the refrigeration plate will be increased, which is conducive to the cooling of the coolant; S5. After the temperature of the mold core measured by the thermometer drops to room temperature, the upper mold is moved for demoulding; and the molded steering wheel blank is polished to remove burrs to form a finished product.

10. The molding process of the automobile steering wheel molding device according to claim 9, characterized in that: In step S3, a micro fan is provided to guide the external air into the cooling chamber.

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