Novel steering wheel exterior trimming part mold pressing injection mold and injection molding method thereof

Abstract

The invention discloses a novel steering wheel exterior trimming part mold pressing injection mold and an injection molding method thereof, and relates to the technical field of mold manufacturing. The mold closing device is arranged at the top end of the supporting table; the injection mechanism is arranged at the top end of the mold closing device and is used for injecting molten plastic into the mold cavity; the cooling mechanism is arranged at the bottom of the mold closing device in a penetrating manner and used for controlling the temperature, so that the molten plastic is quickly cooled and shaped in the mold closing device; the ejection mechanism is arranged at the top of one side of the mold closing device and is used for demolding the molded plastic part from the mold closing device; and the gas-assisted mechanism is arranged at the bottom of the mold closing device and is used for realizing adsorption and blowing ejection of the continuous fiberboard. The mold structure is simplified, the mold manufacturing cost is reduced, the mold maintenance period is shortened, meanwhile, a cooling mechanism is optimized, and the product forming period is greatly shortened; the gas-assisted mechanism ensures that the product can be automatically ejected out and can also be automatically taken; and the core-pulling structure ensures the positioning precision of the composite material plate in the mold pressing process.

Description

Technical Field

[0001] The present invention relates to the technical field of mold manufacturing, and in particular to a novel injection mold for a steering wheel exterior trim and an injection molding method thereof. Background Art

[0002] Steering wheel exterior molding injection molds are specifically designed for manufacturing automotive steering wheel exteriors. Plastic material is injected into the mold cavity through the injection molding process, and after cooling and solidification, the desired steering wheel exterior is formed. The mold design typically includes the mold cavity, gating system, and cooling system to ensure the finished product has excellent surface quality and dimensional accuracy.

[0003] Current compression injection molds for steering wheel exterior trim are primarily designed for processing and molding continuous fiber-reinforced thermoplastic composites. These molds consist of basic structural components: a base, support columns, a top plate, an upper mold, and a lower mold. The lower mold features a through-slot and a slide plate, affixed with an ejector block, which automatically ejects the molded part. The upper mold incorporates a cooling mechanism to cool the molded part for easier demolding. A guide drive mechanism is installed between the connecting plates at each end of the upper mold and the slide plate, driving the slide plate and ejector block for automatic removal of the molded part.

[0004] Current injection molds for steering wheel exterior trim are complex, incorporating multiple mechanisms and components, such as guide drive mechanisms and cooling mechanisms, which complicate manufacturing and maintenance. While these molds can automatically eject the finished product, the material removal process still relies on mechanisms such as sliding blocks and a reclaimer, increasing the risk of mold failure. While the cooling mechanisms in these molds can cool the finished product, they increase energy consumption and the complexity of the cooling system.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Summary of the Invention

[0006] In response to the problems in the related art, the present invention proposes a new steering wheel exterior molding injection mold and an injection molding method thereof to overcome the above-mentioned technical problems existing in the existing related art.

[0007] To this end, the specific technical solutions adopted in the present invention are as follows: According to one aspect of the present invention, a novel steering wheel exterior molding injection mold is provided, comprising: a support platform; a mold clamping device, arranged at the top of the support platform; an injection mechanism, arranged at the top of the mold clamping device, for injecting molten plastic into the mold cavity; a temperature control mechanism, interspersed and arranged at the bottom of the mold clamping device, for controlling the temperature so that the molten plastic can be quickly cooled and shaped in the mold clamping device; an ejection mechanism, arranged at the top of one side of the mold clamping device, for demolding the molded plastic part from the mold clamping device; and an air-assisted mechanism, arranged at the bottom of the mold clamping device, for achieving adsorption and blow-out of the continuous fiberboard.

[0008] Furthermore, in order to mold steering wheel exterior parts that are a combination of different types of thermoplastic resins and continuous fiber reinforced thermoplastic composite materials impregnated with various continuous fibers, the mold clamping device includes a lower fixed plate arranged at the top of the support platform, a lower floating plate is arranged at the top of the lower fixed plate, a lower template is arranged at the top of the lower floating plate, and an upper template is arranged at the top of the lower template; a stripper plate is arranged at the top of the upper template, an upper pad is arranged at the top of the stripper plate, a mold foot is arranged at the top of the upper pad, and an upper fixed plate that cooperates with the injection mechanism is arranged at the top of the mold foot; the mold clamping device also includes a core pulling structure symmetrically arranged in the middle of the lower floating plate, which is used to position the composite material sheet during the molding process; a mold cavity is formed between the lower template and the upper template; a circumferential sealing groove is arranged between the lower floating plate and the lower template.

[0009] Furthermore, in order to inject the molten plastic into the mold cavity, the injection mechanism includes a support seat arranged to cooperate with the upper fixed plate, a barrel is provided on one side of the top end of the support seat, a screw is provided at the bottom end of the barrel, and a nozzle is provided at the bottom end of the screw to cooperate with the support seat and the upper fixed plate; the injection mechanism also includes an injection cylinder arranged at the top end of the support seat to cooperate with the nozzle, and a movable cylinder cooperating with the injection cylinder is provided on one side of the support seat.

[0010] Furthermore, in order to control the mold temperature and allow the molten plastic to quickly cool and shape in the mold, the temperature control mechanism is composed of several heating water channels and several cooling water channels, and the heating water channels and the cooling water channels are both set throughout the upper mold plate.

[0011] Furthermore, in order to demould the formed plastic part from the mold, the ejection mechanism includes upper and lower ejector plates arranged at the bottom end of the upper fixed plate, and the bottom ends of the upper and lower ejector plates are provided with ejection cylinders.

[0012] Furthermore, in order to achieve the adsorption and blowing out of the continuous fiber board, the air-assisted mechanism includes an air inlet opened on one side of the lower floating plate; the air-assisted mechanism also includes an air outlet opened on the other side of the lower floating plate, and an air groove is opened at one end of the air inlet and the air outlet; the air groove is connected to the mold cavity, and the air groove has a gap width of 0.4mm.

[0013] According to another aspect of the present invention, there is also provided a method for molding a novel steering wheel exterior trim mold, the method comprising the following steps: S1. Use a robot to place the softened continuous fiberboard into the mold clamping device; S2. The softened continuous fiberboard is adsorbed by an air-assisted mechanism, and the softened continuous fiberboard is clamped in the upper and lower molds by a clamping device; S3, using the injection mechanism to inject the molten plastic into the mold clamping device; S4, adjusting the temperature of the mold in the mold clamping device through the temperature control mechanism; S5. After the product is formed, it is ejected through the cooperation of the ejection mechanism and the gas-assisted mechanism.

[0014] The beneficial effects of the present invention are as follows: the present invention has a reasonable design, a streamlined mold structure, reduces mold manufacturing costs and maintenance cycles, and optimizes the temperature control mechanism, greatly shortening the product molding cycle; and adds an air-assisted mechanism to ensure that the product can not only be automatically ejected but also automatically take out the material and simplify the mold mechanism; a core-pulling structure is added to the lower mold plate to ensure the positioning accuracy of the composite material plate during the molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is one of the structural schematic diagrams of a new type of injection mold for a steering wheel exterior trim according to an embodiment of the present invention; Figure 2 This is a second structural schematic diagram of a novel injection mold for a steering wheel exterior trim according to an embodiment of the present invention; Figure 3 This is a practical application diagram of a new type of steering wheel exterior molding injection mold according to an embodiment of the present invention; Figure 4 This is one of the partial structural schematic diagrams of a new type of steering wheel exterior molding injection mold according to an embodiment of the present invention; Figure 5 2 is a partial cross-sectional schematic diagram of a mold clamping device in a novel injection mold for a steering wheel exterior trim according to an embodiment of the present invention; Figure 6 This is a second schematic diagram of a partial structure of a new type of steering wheel exterior molding injection mold according to an embodiment of the present invention; Figure 7This is a third schematic diagram of a partial structure of a new type of injection mold for a steering wheel exterior trim according to an embodiment of the present invention; Figure 8 1 is a partial cross-sectional schematic diagram of a gas-assisted mechanism in a novel injection mold for a steering wheel exterior trim according to an embodiment of the present invention; Figure 9 1 is a partial cross-sectional schematic diagram of a temperature control mechanism in a novel injection mold for a steering wheel exterior trim according to an embodiment of the present invention; Figure 10 This is a flow chart of an injection molding method for a novel steering wheel exterior molding mold according to an embodiment of the present invention; Figure 11 This is a schematic diagram of a product production process of a new type of steering wheel exterior molding injection mold according to an embodiment of the present invention; Figure 12 This is a diagram illustrating the actual application of adsorption of a gas-assisted mechanism in a compression injection mold for a novel steering wheel exterior trim according to an embodiment of the present invention.

[0017] In the picture: 1. Support table; 2. Clamping device; 201. Lower fixed plate; 202. Lower floating plate; 203. Lower mold plate; 204. Upper mold plate; 205. Stripper plate; 206. Upper pad; 207. Mold foot; 208. Upper fixed plate; 209. Core-pulling mechanism; 210. Circumferential sealing groove; 3. Injection mechanism; 301. Support seat; 302. Barrel; 303. Screw; 304. Nozzle; 305. Injection cylinder; 306. Moving cylinder; 401. Heating water circuit; 402. Cooling water circuit; 5. Ejector mechanism; 501. Upper and lower ejector plates; 502. Ejector cylinder; 601. Air inlet; 602. Air outlet; 603. Air tank; 7. Chiller; 8. Oil temperature controller; 9. Control cabinet; 10. Vacuum pump; 11. Baked-soft continuous fiberboard. DETAILED DESCRIPTION

[0018] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0019] According to an embodiment of the present invention, a novel steering wheel exterior molding injection mold and an injection molding method thereof are provided.

[0020] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-9As shown, according to one embodiment of the present invention, a new type of steering wheel exterior molding injection mold is provided, including: a support platform 1; a mold clamping device 2, which is arranged at the top of the support platform 1; an injection mechanism 3, which is arranged at the top of the mold clamping device 2, and is used to inject molten plastic into the mold cavity; a temperature control mechanism, which is interspersed and arranged at the bottom of the mold clamping device 2, and is used to control the temperature so that the molten plastic can be quickly cooled and shaped in the mold clamping device 2; an ejection mechanism 5, which is arranged at the top of one side of the mold clamping device 2, and is used to demold the molded plastic part from the mold clamping device 2; an air-assisted mechanism, which is arranged at the bottom of the mold clamping device 2, and is used to achieve adsorption and blowing ejection of the continuous fiberboard.

[0021] With the help of the above scheme, the present invention is rationally designed, streamlines the mold structure to reduce mold manufacturing costs and maintenance cycles, and optimizes the temperature control mechanism, greatly shortening the product molding cycle; and adds an air-assisted mechanism to ensure that the product can not only be automatically ejected but also automatically take out the material and simplify the mold mechanism; a core-pulling structure is added to the lower template 203 to ensure the positioning accuracy of the composite material plate during the molding process.

[0022] In one embodiment, for the above-mentioned mold clamping device 2, the mold clamping device 2 includes a lower fixed plate 201 arranged on the top of the support platform 1, a lower floating plate 202 is arranged on the top of the lower fixed plate 201, a lower template 203 is arranged on the top of the lower floating plate 202, an upper template 204 is arranged on the top of the lower template 203; a stripper plate 205 is arranged on the top of the upper template 204, an upper pad 206 is arranged on the top of the stripper plate 205, a mold foot 207 is arranged on the top of the upper pad 206, and the mold foot 207 is arranged on the top of the mold foot 207. An upper fixed plate 208 cooperating with the injection mechanism 3 is provided at the top; the mold clamping device 2 also includes a core pulling structure 209 symmetrically arranged in the middle of the lower floating plate 202, which is used to position the composite material sheet during the molding process; a mold cavity is formed between the lower template 203 and the upper template 204; a circumferential sealing groove 210 is provided between the lower floating plate 202 and the lower template 203, thereby forming a steering wheel exterior trim combining different types of thermoplastic resins and continuous fiber reinforced thermoplastic composite materials impregnated with various continuous fibers.

[0023] It should be explained that the lower fixed plate 201 is also called the movable side fixed plate. The lower fixed plate 201 assembles the movable side of the entire mold and fixes the entire mold on the movable plate of the injection molding machine; the lower template 203 is also called the movable side template. The main body of the movable side, the male mold core and the guide pin are all on the lower template 203. The runner, gate, return pin hole and material grabbing pin hole are all processed and positioned on the lower template 203. The joint surface between the lower template 203 and the upper template 204 constitutes the parting surface on the mold; the mold foot 207 is installed between the upper pad 206 and the upper fixed plate 208. The upper plate 206 has the function of fixing and reinforcing, so that the upper template 204 will not bend and deform due to the injection pressure, and can protect the precision and life of the mold; the upper template 204 is also called the fixed side template, and the upper template 204 is equipped with the mother mold core, and can also be equipped with the processing positioning such as the nozzle, runner and gate; the upper fixed plate 208 is also called the fixed side fixing plate, and the mother template, positioning ring, nozzle, etc. are fixed on the upper fixed plate 208, which can fix the fixed side of the entire mold on the fixed plate of the injection molding machine.

[0024] The core-pulling structure 209 ensures the positioning accuracy of the composite material sheet during the molding process. By using an external mechanical opener and closer, the lower template 203 and the lower floating plate 202 are opened a certain distance when the mold is opened. The core-pulling structure 209 moves along the bottom slide rail, and the inclined hole is smoothly demolded; the circumferential sealing groove 210 cooperates with the air-assisted mechanism to realize the adsorption and blowing out of the continuous fiber board.

[0025] In one embodiment, for the above-mentioned injection mechanism 3, the injection mechanism 3 includes a support seat 301 arranged to cooperate with the upper fixed plate 208, a barrel 302 is arranged on one side of the top of the support seat 301, a screw 303 is arranged at the bottom end of the barrel 302, and a nozzle 304 cooperating with the support seat 301 and the upper fixed plate 208 is arranged at the bottom end of the screw 303; the injection mechanism 3 also includes an injection cylinder 305 arranged at the top of the support seat 301 and cooperating with the nozzle 304, and a moving cylinder 306 cooperating with the injection cylinder 305 is arranged on one side of the support seat 301, so as to inject the molten plastic into the mold cavity. The injection mechanism 3 is connected to the mold clamping device through a hydraulic system or a mechanical transmission system to ensure that the mold can be reliably closed during the injection process. The moving cylinder 306 drives the support seat 301 to move as a whole to complete the injection action. During injection, the barrel 302 and the screw 303 heat and plasticize the plastic. Under the action of the injection cylinder 305, the molten plastic is injected into the mold cavity through the nozzle 304 at a certain pressure.

[0026] In one embodiment, the temperature control mechanism is composed of a plurality of heating water channels 401 and a plurality of cooling water channels 402. The heating water channels 401 and the cooling water channels 402 are both provided through the upper mold plate 204, thereby controlling the mold temperature and allowing the molten plastic to quickly cool and set in the mold.

[0027] It needs to be explained that, Figure 9 The figure shows a cross-sectional view of the heating and cooling water channels of the injection mold for the exterior molding of the new steering wheel. The cooling water channel / heating water channel lowers or raises the mold temperature by circulating cooling / heating water. The temperature control mechanism is composed of a number of heating water channels 401 and a number of cooling water channels 402. The temperature control mechanism is usually used in conjunction with the casting system and molding parts of the mold to ensure the dimensional accuracy and surface quality of the plastic parts. Among them, there are four groups of heating water channels 401 and cooling water channels 402. After baking, the continuous fiber board is placed in the mold for molding. At this time, the mold temperature rises to 200-300℃, and the liquid plastic is injected into the mold at high speed through the screw 303. After the mold cavity is filled, the cooling water channel 402 is used to quickly cool the mold, and the solidified product is opened and ejected.

[0028] Heating water circuit 401 and cooling water circuit 402 each comprise independent heating and cooling systems. Oil temperature controller 8 drives the circulation of high-temperature thermal oil in heating water circuit 401, rapidly preheating the mold to the process temperature and ensuring melt penetration of the continuous fiberboard during molding. Chiller 7 drives the circulation of cooling water in cooling water circuit 402, rapidly cooling the mold to solidify and finalize the product. Controlled by control cabinet 9, the chiller 7 and oil temperature controller 8 enable rapid heating and cooling of the mold, reducing the molding cycle. When the injection molding machine completes injection and transitions to pressure-holding cooling, a signal is sent to control cabinet 9, at which point oil temperature controller 8 stops. Chiller 7 restarts its cycle, and when the mold temperature drops to approximately 80°C, the product solidifies and is ejected. When the ejection signal from the injection molding machine is sent to control cabinet 9, chiller 7 stops its cycle, and oil temperature controller 8 restarts its cycle. Chiller 7 and oil temperature controller 8 have built-in outlet temperature sensing systems, automatically stopping heating when the set temperature is reached.

[0029] In one embodiment, the ejection mechanism 5 includes upper and lower ejector plates 501 disposed at the bottom of the upper fixed plate 208 , and an ejection cylinder 502 is disposed at the bottom of the upper and lower ejector plates 501 to demold the molded plastic part from the mold.

[0030] It should be noted that the ejector mechanism 5 is usually mounted on the mold clamping device 2 to facilitate mold release during mold opening and closing. After mold opening, the ejector cylinder 502 drives the upper and lower ejector plates 501 to eject the product from the mold.

[0031] In one embodiment, for the above-mentioned air-assisted mechanism, the air-assisted mechanism includes an air inlet 601 opened on one side of the lower floating plate 202; the air-assisted mechanism also includes an air outlet 602 opened on the other side of the lower floating plate 202, and an air groove 603 is opened at one end of the air inlet 601 and the air outlet 602; the air groove 603 is connected to the mold cavity, and the air groove 603 has a gap width of 0.4mm, thereby realizing the adsorption and blowing out of the continuous fiber board, the air groove 603 is connected to the mold cavity, and the air groove 603 has a gap width of 0.4mm, the air inlet 601, the air outlet 602 and the air groove 603 form two air paths, under the action of the external vacuum pump 10, the adsorption and blowing out of the continuous fiber board are realized.

[0032] In addition, if Figure 12 The figure shows the actual application of the gas-assisted mechanism adsorption. The gas-assisted mechanism adsorbs the softened continuous fiberboard 11 onto the mold in the mold clamping device 2, making its shape more consistent with the mold in the mold clamping device 2 and reducing wrinkles on the product surface.

[0033] According to another embodiment of the present invention, Figure 10 As shown, a novel injection molding method for a steering wheel exterior trim mold is also provided, the method comprising the following steps: S1. Place the softened continuous fiberboard 11 into the mold clamping device 2 using a robot; S2, the softened continuous fiber sheet 11 is sucked by the air-assisted mechanism, and the softened continuous fiber sheet 11 is clamped in the upper and lower molds by the clamping device 2; S3, using the injection mechanism 3 to inject the molten plastic into the mold clamping device 2; S4, adjusting the temperature of the mold in the mold clamping device 2 by the temperature control mechanism; S5. After the product is formed, the product is ejected through the cooperation of the ejection mechanism 5 and the gas-assisted mechanism.

[0034] It needs to be explained that, Figure 11As shown in the figure (a in the figure represents material collection; b represents heating; c represents hot pressing; d represents injection molding; e represents removal), it is a schematic diagram of the specific process of compression injection molding of a new type of steering wheel exterior trim mold. In actual application, a robot is used to place the softened continuous fiber board 11 into the mold, and the softened continuous fiber board 11 is adsorbed by an air-assisted mechanism. The softened continuous fiber board 11 is clamped up and down by the clamping device 2, and then the injection mechanism 3 injects the clamping device 2. The injection mechanism 3 is connected to the clamping device 2 through a hydraulic system or a mechanical transmission system. During injection, the barrel 302 and the screw 303 heat and plasticize the continuous fiber board. At this time, the mold temperature rises to 200-300℃. Under the action of the injection cylinder 305, the molten plastic is injected into the mold cavity of the clamping device 2 at a certain pressure and at high speed through the nozzle 304. The temperature control mechanism is connected to the mold casting system and uses two sets of different cooling media (chiller / oil The temperature machine ensures the temperature control of the mold through several heating water channels 401 and several cooling water channels 402, so that the mold can be heated and cooled quickly. The air inlet 601, the air outlet 602 and the air groove 603 form two air channels. Under the action of the external vacuum pump 10, the continuous fiberboard can be adsorbed. After the mold is formed, the continuous fiberboard can be blown up and ejected under the action of the external vacuum pump 10. Using an external mechanical opener and closer, the lower template 203 and the lower floating plate 202 are opened a certain distance when the mold is opened. The core pulling structure 209 moves along the bottom slide rail, and the inclined hole is smoothly demolded. The ejection mechanism 5 is installed on the mold clamping device. After the mold is opened, under the action of the ejection cylinder 502, the upper and lower ejector plates 501 are driven to eject the product in the mold together.

[0035] like Figure 3 The figure shows the actual application of the injection mold for the new steering wheel exterior trim. Under the control of the control cabinet 9, under the action of the chiller 7 and the oil temperature machine 8, a temperature control mechanism is formed to achieve rapid heating and cooling of the mold, thereby reducing the molding cycle. Under the control of the control cabinet 9, under the action of the vacuum pump 10 and combined with the gas-assisted mechanism, the adsorption and blowing ejection functions are realized.

[0036] To sum up, with the help of the above-mentioned technical solutions of the present invention, the present invention has a reasonable design, streamlines the mold structure to reduce mold manufacturing costs and maintenance cycles, and optimizes the temperature control mechanism, greatly shortening the product molding cycle; and adds an air-assisted mechanism to ensure that the product can not only be automatically ejected but also automatically take out materials and simplify the mold mechanism; a core-pulling structure is added to the lower template 203 to ensure the positioning accuracy of the composite material plate during the molding process.

[0037] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of steering wheel exterior molding injection mold, characterized in that: include: Support platform (1); A mold clamping device (2) is arranged on the top of the support platform (1); An injection mechanism (3) is provided at the top of the mold clamping device (2) and is used to inject molten plastic into the mold cavity; A temperature control mechanism is interspersed and arranged at the bottom of the mold clamping device (2) and is used to control the temperature so that the molten plastic is quickly cooled and formed in the mold clamping device (2); An ejection mechanism (5) is arranged at the top of one side of the mold clamping device (2) and is used to demould the molded plastic part from the mold clamping device (2); An air-assisted mechanism is provided at the bottom of the mold clamping device (2) and is used to achieve adsorption and ejection of the continuous fiberboard by blowing; The mold clamping device (2) comprises a lower fixed plate (201) arranged at the top of the support platform (1), a lower floating plate (202) is arranged at the top of the lower fixed plate (201), a lower template (203) is arranged at the top of the lower floating plate (202), and an upper template (204) is arranged at the top of the lower template (203); A stripper plate (205) is provided at the top of the upper template (204), an upper pad (206) is provided at the top of the stripper plate (205), a mold foot (207) is provided at the top of the upper pad (206), and an upper fixing plate (208) that cooperates with the injection mechanism (3) is provided at the top of the mold foot (207); The gas-assisted mechanism comprises an air inlet (601) provided on one side of the lower floating plate (202); The air-assisted mechanism further comprises an air outlet (602) provided on the other side of the lower floating plate (202), and an air groove (603) is provided at one end of each of the air inlet (601) and the air outlet (602); The air groove (603) is communicated with the mold cavity, and the air groove (603) has a gap width of 0.4 mm.

2. The novel steering wheel exterior molding injection mold according to claim 1, characterized in that: The mold clamping device (2) further comprises a core pulling structure (209) symmetrically arranged in the middle of the lower floating plate (202) and used for positioning the composite material plate during the molding process.

3. The novel injection mold for steering wheel exterior trim according to claim 1, characterized in that: A mold cavity is formed between the lower mold plate (203) and the upper mold plate (204).

4. The novel injection mold for steering wheel exterior trim according to claim 1, characterized in that: A circumferential sealing groove (210) is provided between the lower floating plate (202) and the lower template (203).

5. The novel injection mold for steering wheel exterior trim according to claim 1, characterized in that: The injection mechanism (3) includes a support seat (301) arranged to cooperate with the upper fixed plate (208), a barrel (302) is arranged on one side of the top end of the support seat (301), a screw (303) is arranged at the bottom end of the barrel (302), and a nozzle (304) is arranged at the bottom end of the screw (303) to cooperate with the support seat (301) and the upper fixed plate (208); The injection mechanism (3) further comprises an injection cylinder (305) arranged at the top of the support seat (301) and cooperating with the nozzle (304); a movable cylinder (306) cooperating with the injection cylinder (305) is provided on one side of the support seat (301).

6. The novel injection mold for steering wheel exterior trim according to claim 1, characterized in that: The temperature control mechanism is composed of a plurality of heating water channels (401) and a plurality of cooling water channels (402), and the heating water channels (401) and the cooling water channels (402) are both arranged through the upper template (204).

7. The novel injection mold for steering wheel exterior trim according to claim 1, characterized in that: The ejection mechanism (5) comprises upper and lower ejector plates (501) arranged at the bottom end of the upper fixed plate (208), and an ejection oil cylinder (502) is provided at the bottom end of the upper and lower ejector plates (501).

8. A method for molding a novel steering wheel exterior trim mold, comprising: using the novel steering wheel exterior trim mold according to any one of claims 1 to 7 for molding, characterized in that: The method comprises the following steps: S1, using a robot to place the baked soft continuous fiberboard (11) into the mold clamping device (2); S2, adsorbing the softened continuous fiber sheet (11) through an air-assisted mechanism, and performing upper and lower mold clamping on the softened continuous fiber sheet (11) using a mold clamping device (2); S3, using the injection mechanism (3) to inject the molten plastic into the mold clamping device (2); S4, regulating the temperature of the mold in the mold clamping device (2) through a temperature control mechanism; S5. After the product is formed, the product is ejected through the cooperation of the ejection mechanism (5) and the gas-assisted mechanism.

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