Injection molding device with demolding structure for production of air duct plate of automobile air conditioner

Abstract

The utility model provides an injection molding device with a demolding structure for automobile air conditioner air duct plate production, and belongs to the technical field of air conditioner air duct plate injection molding. The injection molding device with the demolding structure for producing the air duct plate of the automobile air conditioner comprises a mold structure and the demolding structure, the mold structure comprises a supporting seat, a lower mold and an upper mold, the lower mold is fixedly connected to one side of the supporting seat, the upper mold is connected with the lower mold, and the demolding structure is arranged on the supporting seat. And the demolding structure comprises an ejection assembly, a first ejection rod, a sliding block, a check block and two V-shaped rotating plates, the ejection assembly is arranged in the lower mold, and the first ejection rod is slidably connected with the ejection assembly. According to the injection molding device provided with the demolding structure and used for production of the automobile air conditioner air duct plate, two times of ejection actions are conveniently formed, adhesion of products obtained after injection molding is avoided, meanwhile, gas is cooperated for assisting demolding, and the demolding effect is further improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning duct plate injection molding, and more specifically, to an injection molding apparatus for producing automotive air conditioning duct plates with a demolding structure. Background Technology

[0002] Injection molding is a highly efficient plastic processing technology widely used in industrial production. It primarily achieves mass production of plastic products through precise control of thermodynamic parameters. The core principle involves feeding solid plastic particles into a high-temperature barrel via a hopper, where they melt into a viscous liquid under precise temperature control. This molten plastic is then injected at high speed into a precision-machined mold cavity via an axial screw driven by injection pressure. A cooling system inside the mold uses a circulating medium to allow the melt to undergo a phase change and solidify within a predetermined time, ultimately forming a molded product that perfectly matches the mold structure. This process, with its advantages of short molding cycles, good dimensional stability, and high surface finish, has become the mainstream processing method for complex components in the automotive manufacturing industry, such as instrument panel assemblies, intake manifolds, and interior trim parts, and plays a particularly important role in the production of components like automotive air conditioning duct panels.

[0003] Currently, after injection molding of automotive air conditioning duct panels, ejector pins are used to demold the molded product. However, the product tends to stick to one end of the ejector pin, requiring manual assistance for demolding. This not only affects the demolding effect but also increases labor costs, reduces work efficiency, and diminishes the practicality of the device. Utility Model Content

[0004] To overcome the above shortcomings, this application provides an injection molding device for producing automotive air conditioning duct plates with a demolding structure. The device aims to improve the problem that the molded product is prone to sticking to one end of the ejector pin, requiring manual demolding, which not only affects the demolding effect but also increases labor costs, reduces work efficiency, and reduces the practicality of the device.

[0005] This application provides an injection molding device for producing automotive air conditioning duct plates with a demolding structure. The device includes a mold structure and a demolding structure. The mold structure includes a support base, a lower mold, and an upper mold. The lower mold is fixedly connected to one side of the support base, and the upper mold is connected to the lower mold. The demolding structure includes an ejection assembly, a first ejector rod, a slider, a stop block, and two V-shaped rotating plates. The ejection assembly is disposed within the lower mold. The first ejector rod is slidably connected to the ejection assembly, and the slider is connected to the ejection assembly. The stop block is disposed within the lower mold. Both V-shaped rotating plates are rotatably connected to the slider. One side of each V-shaped rotating plate is in contact with the first ejector rod, and the other side of each V-shaped rotating plate is in contact with the stop block.

[0006] In one specific implementation, the ejection assembly includes an electric push rod, a lifting plate, and four second ejection rods. The electric push rod is installed on one side of the support base. The lifting plate is connected to the movable end of the electric push rod. Four second ejection rods are evenly arranged on one side of the lifting plate. The second ejection rods are slidably connected to the lower mold. The first ejection rod is slidably connected to the second ejection rods. The slider is fixedly connected to the outer ring of the second ejection rods.

[0007] In the above implementation process, the electric push rod, lifting plate and four second ejector rods can be set up to facilitate the ejection of the injection-molded product.

[0008] In one specific implementation, a reset assembly is provided inside the second ejector rod. The reset assembly includes a limiting block and a spring. The limiting block is fixedly connected to the outer ring of the first ejector rod. The limiting block is slidably connected to the second ejector rod. The two ends of the spring are fixedly connected to the limiting block and the inner wall of the second ejector rod, respectively.

[0009] In the above implementation process, the setting of the limit block and the spring can facilitate the reset of the first ejector rod.

[0010] In one specific implementation, a sealing assembly is provided inside the lower mold. The sealing assembly includes a first toothed plate, a gear, a second toothed plate, a sealing rod, and a connecting hole. The first toothed plate is fixedly connected to the slider. The first toothed plate and the second toothed plate mesh with each other on both sides of the gear. The gear is rotatably connected to the lower mold. Both the first toothed plate and the second toothed plate are slidably connected to the lower mold. The sealing rod is fixedly connected to the second toothed plate. A connecting hole is provided on one side of the lower mold, and the sealing rod is slidably connected to the connecting hole.

[0011] In the above implementation process, the connection hole can be opened conveniently while the slider is moving by setting up the first toothed plate, gear, second toothed plate, sealing rod and connecting hole.

[0012] In one specific implementation, an air outlet assembly is provided on one side of the support base. The air outlet assembly includes a high-pressure blower, a branch pipe, four flexible hoses, an air inlet, and an exhaust port. The high-pressure blower is installed on one side of the support base. The branch pipe is connected to the high-pressure blower. All four flexible hoses are connected to the branch pipe. The lower mold has the air inlet and the exhaust port. The flexible hoses are connected to the air inlet. The exhaust port is connected to the connecting hole and the air inlet, respectively.

[0013] In the above process, the high-pressure blower, branch pipe, four hoses, air inlet and exhaust port are designed to facilitate the blowing of gas through the connection hole to the injection molded product, thereby separating the stuck parts and improving the demolding effect.

[0014] In one specific implementation, an injection tube is connected to one side of the upper mold.

[0015] In the above process, injection molding is facilitated by connecting an injection tube to one side of the upper mold.

[0016] In one specific implementation, both sides of the V-shaped rotating plate are set to be arc-shaped.

[0017] In the above implementation process, by setting both sides of the V-shaped rotating plate to be arc-shaped, the frictional loss between the V-shaped rotating plate and the first ejector rod and the stop block can be easily reduced.

[0018] Compared with the prior art, the beneficial effects of this application are as follows: by setting up the ejection assembly, the first ejection rod, the slider, the stop block and the two V-shaped rotating plates, it is possible to easily form two ejection actions, avoid the product sticking after injection molding, and at the same time drive the sealing assembly to open during ejection, so that the air outlet assembly can further blow gas to the product after injection molding, so that the sticking parts are separated, and further improve the demolding effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a top view of an injection molding device for producing an automotive air conditioning duct plate with a demolding structure, provided in an embodiment of this application.

[0021] Figure 2 A schematic diagram of an injection molding device for producing an automotive air conditioning duct plate with a demolding structure, provided for the embodiments of this application;

[0022] Figure 3 A schematic diagram of the cross-sectional structure of the air outlet component provided in the embodiments of this application;

[0023] Figure 4 A cross-sectional structural diagram of an injection molding device for producing an automotive air conditioning duct plate with a demolding structure, provided for the embodiments of this application.

[0024] In the diagram: 10-Mold structure; 110-Support base; 120-Lower mold; 130-Upper mold; 140-Sealing assembly; 141-First toothed plate; 142-Gear; 143-Second toothed plate; 144-Sealing rod; 145-Connecting hole; 150-Air outlet assembly; 151-High pressure blower; 152-Branch pipe; 153-Hose; 154-Air inlet; 155-Exhaust hole; 20-Demolding structure; 210-Ejection assembly; 211-Electric push rod; 212-Lifting plate; 213-Second ejection rod; 220-First ejection rod; 230-Slider; 240-Stop block; 250-V-shaped rotating plate; 260-Reset assembly; 261-Limit block; 262-Spring. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0026] Please see Figure 1 This application provides an injection molding device for producing automotive air conditioning duct panels with a demolding structure, including a mold structure 10 and a demolding structure 20.

[0027] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The mold structure 10 includes a support base 110, a lower mold 120 and an upper mold 130. The lower mold 120 is fixedly connected to one side of the support base 110, and the upper mold 130 is connected to the lower mold 120.

[0028] In a specific configuration, a sealing assembly 140 is provided inside the lower mold 120. The sealing assembly 140 includes a first toothed plate 141, a gear 142, a second toothed plate 143, a sealing rod 144, and a connecting hole 145. The first toothed plate 141 is fixedly connected to the slider 230. The first toothed plate 141 and the second toothed plate 143 are meshed on both sides of the gear 142. The gear 142 is rotatably connected to the lower mold 120. The first toothed plate 141 and the second toothed plate 143 are both slidably connected to the lower mold 120. The sealing rod 144 is fixedly connected to the second toothed plate 143. A connecting hole 145 is provided on one side of the lower mold 120. The sealing rod 144 is slidably connected to the connecting hole 145. The arrangement of the first toothed plate 141, the gear 142, the second toothed plate 143, the sealing rod 144, and the connecting hole 145 allows the connecting hole 145 to be opened conveniently while the slider 230 is moving.

[0029] In the specific configuration, an air outlet assembly 150 is provided on one side of the support base 110. The air outlet assembly 150 includes a high-pressure blower 151, a branch pipe 152, four hoses 153, an air inlet 154, and an exhaust port 155. The high-pressure blower 151 is installed on one side of the support base 110. The branch pipe 152 is connected to the high-pressure blower 151. All four hoses 153 are connected to the branch pipe 152. The lower mold 120 has an air inlet 154 and an exhaust port 155. The hoses 153 are connected to the air inlet 154. The exhaust port 155 is connected to the connection hole 145 and the air inlet 154, respectively. The configuration of the high-pressure blower 151, the branch pipe 152, the four hoses 153, the air inlet 154, and the exhaust port 155 facilitates the blowing of gas through the connection hole 145 onto the injection-molded product, separating the adhered parts and improving the demolding effect.

[0030] In the specific setup, an injection tube is connected to one side of the upper mold 130, which facilitates injection molding.

[0031] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The demolding structure 20 includes an ejector assembly 210, a first ejector rod 220, a slider 230, a stop block 240, and two V-shaped rotating plates 250. The ejector assembly 210 is disposed in the lower mold 120. The first ejector rod 220 is slidably connected to the ejector assembly 210. The slider 230 is connected to the ejector assembly 210. The stop block 240 is disposed in the lower mold 120. The two V-shaped rotating plates 250 are rotatably connected to the slider 230. One side of the V-shaped rotating plate 250 is in contact with the first ejector rod 220, and the other side of the V-shaped rotating plate 250 is in contact with the stop block 240.

[0032] In a specific configuration, the ejection assembly 210 includes an electric push rod 211, a lifting plate 212, and four second ejection rods 213. The electric push rod 211 is installed on one side of the support base 110. The lifting plate 212 is connected to the movable end of the electric push rod 211. Four second ejection rods 213 are evenly arranged on one side of the lifting plate 212. The second ejection rods 213 are slidably connected to the lower mold 120. The first ejection rod 220 is slidably connected to the second ejection rods 213. The slider 230 is fixedly connected to the outer ring of the second ejection rods 213. The configuration of the electric push rod 211, the lifting plate 212, and the four second ejection rods 213 facilitates the ejection of the injection-molded product.

[0033] In a specific configuration, a reset component 260 is provided inside the second ejector rod 213. The reset component 260 includes a limiting block 261 and a spring 262. The limiting block 261 is fixedly connected to the outer ring of the first ejector rod 220. The limiting block 261 is slidably connected to the second ejector rod 213. The two ends of the spring 262 are fixedly connected to the limiting block 261 and the inner wall of the second ejector rod 213, respectively. The setting of the limiting block 261 and the spring 262 facilitates the reset of the first ejector rod 220.

[0034] In the specific configuration, both sides of the V-shaped rotating plate 250 are set to be arc-shaped. By setting both sides of the V-shaped rotating plate 250 to be arc-shaped, the frictional loss between the V-shaped rotating plate 250 and the first ejector rod 220 and the stop block 240 can be easily reduced.

[0035] The working principle of this injection molding device for producing automotive air conditioning duct panels with a demolding structure is as follows: When using the injection molding device for producing automotive air conditioning duct panels with a demolding structure, the upper mold 130 and the lower mold 120 close to complete the injection molding. The molten plastic fills the cavity through the injection tube and cools and solidifies. Subsequently, the upper mold 130 opens, and the electric push rod 211 pushes the lifting plate 212 and the four second ejector rods 213 to rise, directly ejecting the bottom of the product. At the same time, the slider 230 on the outer ring of the second ejector rods 213 moves upward synchronously, driving the first toothed plate 141 to drive the gear 142 to rotate, causing the second toothed plate 143 to move in the opposite direction and pull the sealing rod 144 out of the connecting hole 145, opening the airflow passage. At this time, the high-pressure blower 151... Upon startup, airflow enters the air inlet 154 of the lower mold 120 through the branch pipe 152 and the hose 153, and is blown from the connecting hole 145 through the exhaust hole 155 to the product adhesion area to assist separation. During this process, the rise of the slider 230 also drives the two V-shaped rotating plates 250 to rotate, and their arc-shaped side contacts the stop block 240 to generate a lever effect, pushing the first ejector rod 220 to move and generate a secondary ejection force. The combined gas and mechanical force achieve multi-directional demolding, separating the adhesion area and further improving the demolding effect. After demolding is completed, the electric push rod 211 retracts and drives the ejector assembly 210 to reset. The spring 262 pulls the first ejector rod 220 to retract, and at the same time, the sealing rod 144 re-closes the connecting hole 145 to prepare for the next cycle.

[0036] It should be noted that the specific models and specifications of the high-pressure blower 151 and the electric actuator 211 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0037] The power supply and operating principle of the high-pressure blower 151 and the electric actuator 211 are clear to those skilled in the art and will not be described in detail here.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An injection molding device for producing automotive air conditioning duct panels with a demolding structure, characterized in that, The utility model provides a mould structure and demoulding structure, and the mould structure comprises a support base, a lower mould and an upper mould, the lower mould is fixedly connected to one side of the support base, and the upper mould is connected with the lower mould. The demoulding structure comprises an ejection assembly, a first ejection rod, a sliding block, a stopper and two V-shaped rotating plates, the ejection assembly is arranged in the lower mould, the first ejection rod is in sliding connection with the ejection assembly, the sliding block is connected with the ejection assembly, the stopper is arranged in the lower mould, and the two V-shaped rotating plates are rotatably connected in the sliding block. The ejection assembly comprises an electric push rod, a lifting plate and four second ejection rods, the electric push rod is installed at one side of the support base, the lifting plate is connected with the movable end of the electric push rod, four second ejection rods are uniformly arranged at one side of the lifting plate, the second ejection rods are in sliding connection with the lower mould, the first ejection rod is in sliding connection with the second ejection rods, and the sliding block is fixedly connected with the outer circle of the second ejection rods.

2. The injection molding device for producing an automobile air conditioner air duct plate with a demolding structure according to claim 1, characterized in that, The second ejection rod is internally provided with a reset assembly, the reset assembly comprises a limiting block and a spring, the limiting block is fixedly connected to the outer circle of the first ejection rod, the limiting block is in sliding connection with the second ejection rod, and the spring is fixedly connected with the inner wall of the second ejection rod at two ends and the limiting block.

3. The injection molding device for producing an automobile air conditioner air duct plate with a demolding structure according to claim 2, characterized in that, ​ 4. The injection molding device for producing an automobile air conditioner air duct plate with a demolding structure according to claim 1, characterized in that, The lower mold (120) is provided with a blocking assembly (140), the blocking assembly (140) comprises a first toothed plate (141), a gear (142), a second toothed plate (143), a blocking rod (144) and a connecting hole (145), the first toothed plate (141) is fixedly connected with the sliding block (230), the first toothed plate (141) and the second toothed plate (143) are engaged on the both sides of the gear (142) oppositely, the gear (142) is rotatably connected with the lower mold (120), the first toothed plate (141) and the second toothed plate (143) are slidably connected with the lower mold (120), the blocking rod (144) is fixedly connected with the second toothed plate (143), the lower mold (120) is provided with the connecting hole (145) on one side, and the blocking rod (144) is slidably connected with the connecting hole (145).

5. The injection molding device for producing an automobile air conditioner air duct plate with a demolding structure according to claim 4, characterized in that, The support base (110) is provided with an air outlet assembly (150) on one side, the air outlet assembly (150) comprises a high-pressure fan (151), a branch pipe (152), four hoses (153), an air inlet hole (154) and an exhaust hole (155), the high-pressure fan (151) is installed on one side of the support base (110), the branch pipe (152) is communicated with the high-pressure fan (151), four hoses (153) are communicated with the branch pipe (152), the lower mold (120) is provided with the air inlet hole (154) and the exhaust hole (155), the hose (153) is communicated with the air inlet hole (154), and the exhaust hole (155) is communicated with the connecting hole (145) and the air inlet hole (154) respectively.

6. The injection molding device for producing an automobile air conditioner air duct plate having a demolding structure according to claim 1, characterized in that, The upper mold (130) is communicated with an injection pipe on one side.

7. The injection molding device for producing an automobile air conditioner air duct plate having a demolding structure according to claim 1, characterized in that, The V-shaped rotating plate (250) is provided with an arc shape on both sides. The lower mold (120) is provided with a blocking assembly (140), the blocking assembly (140) comprises a first toothed plate (141), a gear (142), a second toothed plate (143), a blocking rod (144) and a connecting hole (145), the first toothed plate (141) is fixedly connected with the sliding block (230), the first toothed plate (141) and the second toothed plate (143) are engaged on the both sides of the gear (142) oppositely, the gear (142) is rotatably connected with the lower mold (120), the first toothed plate (141) and the second toothed plate (143) are slidably connected with the lower mold (120), the blocking rod (144) is fixedly connected with the second toothed plate (143), the lower mold (120) is provided with the connecting hole (145) on one side, and the blocking rod (144) is slidably connected with the connecting hole (145).

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