Injection molding device for processing air outlet of automobile air conditioner
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-03-31
AI Technical Summary
Polypropylene granules slip in the screw groove, causing unstable feed rate in the molding die, which affects the molding of automotive air conditioning vents and product quality.
The feeding mechanism includes an extrusion roller, an extrusion plate, and a long strip. The extrusion roller is driven to rotate by a geared motor, and the long strip moves and cooperates with the extrusion plate to flatten the plastic granules. The combination of curved surface, extrusion surface, concave part and convex part increases the surface area and friction of the plastic granules, ensuring stable conveying.
It significantly improves the contact friction between plastic granules and the screw and inner wall of the heating barrel, ensuring stable material delivery and improving the molding effect and product quality of automotive air conditioning vents.
Smart Images
Figure CN121756518A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of plastic injection molding technology, and in particular to an injection molding device for processing automotive air conditioning vents. Background Technology
[0002] Automotive air conditioning vents are typically manufactured using injection molding. These vents are usually made from raw materials such as polypropylene granules and glass fiber reinforced nylon granules. The plastic granules are fed into the hopper of the injection molding machine, and then enter the heated barrel of the machine. As the screw rotates and conveys the plastic granules, they are heated, melted, and extruded into the mold cavity. The molten material cools and solidifies within the mold cavity, thus forming the automotive air conditioning vent.
[0003] In common injection molding devices for processing automotive air conditioning vents, plastic granules are added to a hopper and fed into the heating barrel of the injection molding machine for melting. The granules then enter the molding die for cooling and molding. When polypropylene granules are used as raw material, due to their low density, smooth surface, and low coefficient of friction, the granules tend to slip within the screw groove as they enter the heating barrel and are conveyed by the screw. This causes instability in the feed rate into the molding die, affecting the molding of the automotive air conditioning vent within the mold cavity and the final product quality. Therefore, this application provides an injection molding device for processing automotive air conditioning vents to meet this requirement. Summary of the Invention
[0004] This invention provides an injection molding device for processing automotive air conditioning vents to solve the problem that polypropylene particles easily slip in the screw groove, causing unstable feed amount in the molding die, which in turn affects the molding of automotive air conditioning vents in the mold cavity and the final product quality.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An injection molding device for processing automotive air conditioning vents includes an injection molding machine, wherein a hopper is fixed at the inlet of the injection molding machine, and further includes: The feeding mechanism includes a squeezing roller rotatably connected inside the hopper. A guide plate and a squeezing plate are fixed to the inner wall of the hopper. The guide plate is located above the squeezing roller, and the squeezing plate is located to the side of the squeezing roller. The squeezing roller includes a circular roller rotatably connected inside the hopper. Multiple recesses are integrally formed on the circular roller. A geared motor is fixed to the outer wall of the hopper via a support. The end of the circular roller is fixedly connected to the output end of the geared motor. A protrusion that matches the shape of the recesses is integrally formed on the squeezing plate. Multiple strips are fixed together on the circular roller and the recesses. During operation, the geared motor drives the extrusion roller to rotate. While the long strip pushes the plastic granules, the extrusion roller and the long strip work together with the extrusion plate to flatten the falling plastic granules.
[0006] Preferably, the strip has an arc-shaped surface, an extrusion surface, and an inclined surface connected in sequence. During the rotation of the strip by the extrusion roller, the arc-shaped surface moves the plastic particles while cooperating with the extrusion plate to extrude the plastic particles. After the plastic particles are extruded by the arc-shaped surface, the extrusion surface extrudes them again.
[0007] Preferably, the arc-shaped surface is provided with multiple anti-slip grooves.
[0008] Preferably, a wear-resistant plate is fixed together on the extrusion plate and the protrusion, and a plurality of protrusions are fixed on the side of the wear-resistant plate, with the protrusions corresponding to the recesses.
[0009] Preferably, multiple pressure knives are fixed at the middle position of the inner wall of the recess. The pressure knives are fixed on the inclined surface and the blades of the pressure knives are arc-shaped. Multiple sets of two protrusions are fixed on the side of the wear-resistant plate. Each set of two protrusions is located between two adjacent protrusions. The protrusions are right-angled triangles with the right-angled sides of two adjacent protrusions corresponding to each other. During the rotation of the pressure knives driven by the roller, the pressure knives pass between two adjacent protrusions. The blades of the pressure knives have notches.
[0010] Preferably, a second strip is fixed together on the roller and the recessed part. The second strip is fixed between two adjacent pressure knives on the same inclined surface. An inclined surface is provided on the second strip, and the inclined surface is inclined in the opposite direction to the inclined surface.
[0011] Preferably, multiple anti-slip strips are fixed on the inclined surface two.
[0012] Preferably, the wear-resistant plate has multiple raised strips fixed on its side, the recessed portion is located between two adjacent raised strips, and multiple shallow grooves are formed on the side of the raised strips.
[0013] Preferably, a heat dissipation assembly is provided on the side of the extrusion plate and the protrusion away from the extrusion roller. The heat dissipation assembly includes fin one and fin two, which are respectively embedded in the side of the extrusion plate and the protrusion away from the extrusion roller.
[0014] Preferably, arc-shaped pieces are fixed on opposite sides of the second fin. The arc-shaped pieces are fixed on the side of the protrusion away from the extrusion roller. A connecting piece is fixed on the inner wall of the arc-shaped piece. The side of the connecting piece away from the arc-shaped piece is fixedly connected to the side of the second fin.
[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up an extrusion roller, an extrusion plate, and a long strip, the extrusion roller is driven to rotate by a geared motor, and the long strip simultaneously pushes the plastic granules into the gap between the extrusion roller and the extrusion plate. With the help of the rotational motion of the extrusion roller and the long strip, the plastic granules are flattened in conjunction with the extrusion plate. The surface area of the flattened granules is significantly increased, and the surface forms tiny rough wrinkles, which can greatly improve the contact friction between the granules and the screw threads and inner wall of the heated barrel, enhance the screw's material carrying capacity, achieve stable material delivery, and ensure the molding effect and product quality of the automotive air conditioning vent in the mold cavity.
[0016] By setting recessed and raised portions, the recessed portions are located on the roller and are used to increase the area of the roller's circumference, thereby enabling the extrusion of more plastic granules and improving extrusion efficiency. The raised portions are used to cooperate with the recessed portions to ensure stable extrusion of the plastic granules.
[0017] By setting up an arc-shaped surface and an extrusion surface, during the rotation of the strip, the arc-shaped surface moves the plastic granules. When the arc-shaped surface rotates to the position of the extrusion plate, the arc-shaped surface and the extrusion plate work together to extrude the plastic granules, causing the plastic granules to undergo initial deformation. Then, the plastic granules are further extruded by the extrusion surface to ensure that the plastic granules are stably flattened.
[0018] By setting anti-slip grooves, which are opened on the curved surface, the friction between the curved surface and the plastic particles is increased, ensuring that the curved surface stably moves the plastic particles. At the same time, it enhances the cooperation between the curved surface and the extrusion plate, ensuring that the curved surface stably extrudes the plastic particles.
[0019] By incorporating wear-resistant plates, which are fixed to the extrusion plate, the wear resistance of the area on the extrusion plate where plastic granules are extruded is improved, thereby extending the service life of the extrusion plate.
[0020] By setting a protruding strip, which is fixed on the wear-resistant plate, the cooperation of the protruding strip, the long strip, and the round roller improves the extrusion capacity of the plastic granules and compresses the flat granules into an uneven shape, further increasing the surface friction and thus achieving more stable conveying of raw materials.
[0021] By setting up a pressure knife and two protrusions, during the extrusion process, when the plastic granules are squeezed to the two protrusions, some of the plastic granules may still get stuck between the two protrusions after being flattened due to the influence of the right-angled triangular protrusions. At this time, the rotation of the pressure knife will cut the flat granules stuck between the two protrusions, reducing the volume of the flat granules and realizing the automatic cleaning of the flat granules between the two protrusions, preventing them from affecting the extrusion of subsequent plastic granules. The smaller flat granules fill the gaps between the larger flat granules, improving the conveying stability of the flat granules.
[0022] By setting a notch on the blade of the pressure knife, while cutting through the stuck flat particles, the notch also helps the cut flat particles to move steadily out between the two protrusions.
[0023] By setting up two long strips and two inclined planes, the second long strip can improve the pressure knife's resistance to lateral deformation and extend its service life. On the other hand, it can further improve the extrusion efficiency of the roller on the plastic granules. Moreover, the plastic granules extruded by the second long strip are flattened to a lesser degree than those extruded by the first long strip. The flattened granules can fill the gaps between the flattened granules, ensuring stable material conveying. At the same time, the second inclined plane and the first inclined plane have opposite inclination directions, forming depressions at the first and second inclined planes, which can achieve stable conveying of plastic granules.
[0024] By setting anti-slip strips, which are located on the second inclined plane, the friction between the second inclined plane and the plastic particles is increased. On the one hand, this improves the stability of the movement of the plastic particles by the second inclined plane, and on the other hand, it also improves the squeezing ability of the second strip on the plastic particles.
[0025] By setting the third protrusion, when the plastic granules are squeezed to the third protrusion, the third protrusion enhances the ability to flatten the plastic granules, further ensuring that the plastic granules are flattened stably. In addition, the shallow groove on the third protrusion can make the surface of the flattened granules formed by the third protrusion slightly uneven, which further improves the stability of the raw material conveying.
[0026] By setting fin one and fin two, during the process of the plastic granules being flattened from the wear-resistant plate, the wear-resistant plate and the extrusion plate will generate a lot of heat due to friction. Fin one and fin two improve the heat dissipation capacity of the wear-resistant plate and the extrusion plate, preventing overheating of the wear-resistant plate and the extrusion plate from affecting the extrusion of the plastic granules. At the same time, fin one and fin two are embedded in the extrusion plate, reducing the distance between fin one and fin two and the wear-resistant plate, reducing the heat conduction time, and thus further improving the heat dissipation capacity of the wear-resistant plate.
[0027] By setting arc-shaped plates and connecting plates, the arc-shaped plates are used to increase the contact area between fin two and the protrusion on the extrusion plate, thereby improving the heat conduction between the two and thus improving the heat dissipation capacity of the extrusion plate. The connecting plates are used to increase the contact area between the arc-shaped plates and fin two, which can further increase the heat conduction between the protrusion and fin two while improving the heat dissipation capacity of fin two, thereby further improving the heat dissipation capacity of the extrusion plate. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the guide plate of the present invention; Figure 3This is a cross-sectional view of the extrusion roller of the present invention; Figure 4 This is a three-dimensional structural diagram of the roller section of the present invention; Figure 5 This is a three-dimensional structural diagram of the recessed portion of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the long strip of the present invention; Figure 7 This is a three-dimensional structural diagram of the extrusion plate of the present invention; Figure 8 This is a three-dimensional structural diagram of the three-dimensional structure of the protrusion at three points in this invention; Figure 9 This is a cross-sectional view of one of the fins of the present invention; Figure 10 This is a three-dimensional structural diagram of the arc-shaped surface of the present invention.
[0029] In the diagram: 1. Injection molding machine; 2. Hopper; 3. Feeding mechanism; 4. Guide plate; 5. Extrusion roller; 6. Circular roller; 7. Recessed part; 8. Strip 1; 9. Arc-shaped surface; 10. Extrusion surface; 11. Inclined surface 1; 12. Anti-slip groove; 13. Pressure knife; 14. Notch; 15. Strip 2; 16. Inclined surface 2; 17. Anti-slip strip; 18. Extrusion plate; 19. Protrusion; 20. Wear-resistant plate; 21. Raised strip 1; 22. Raised strip 2; 23. Raised strip 3; 24. Shallow groove; 25. Heat dissipation assembly; 26. Fin 1; 27. Fin 2; 28. Arc-shaped piece; 29. Connecting piece; 30. Gear motor.
[0030] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation
[0031] The injection molding device for processing automotive air conditioning vents provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.
[0032] like Figures 1-10 As shown, an embodiment of the present invention provides an injection molding device for processing automotive air conditioning vents, including an injection molding machine 1, a hopper 2 fixed at the feed inlet of the injection molding machine 1, and further comprising: The feeding mechanism 3 includes a pressing roller 5 rotatably connected inside the hopper 2. A guide plate 4 and a pressing plate 18 are fixed to the inner wall of the hopper 2 respectively. The top of the pressing plate 18 is inclined and used for guiding the material. The guide plate 4 is located above the pressing roller 5, and the pressing plate 18 is located on the side of the pressing roller 5. The pressing roller 5 includes a circular roller 6 rotatably connected inside the hopper 2. Multiple recesses 7 are integrally formed on the circular roller 6. A reduction motor 30 is fixed to the outer wall of the hopper 2 through a support. The end of the circular roller 6 is fixedly connected to the output end of the reduction motor 30. A protrusion 19 that matches the shape of the recesses 7 is integrally formed on the pressing plate 18. Multiple strips 8 are fixed together on the circular roller 6 and the recesses 7. The multiple strips 8 are arranged in a ring array on the circular roller 6 with the center of the circular roller 6 as the array center. During operation, the geared motor 30 drives the extrusion roller 5 to rotate. While the strip 8 agitates the plastic granules, the extrusion roller 5 and the strip 8 work together with the extrusion plate 18 to flatten the falling plastic granules. The hopper 2 temporarily stores and guides the plastic granules. The feeding mechanism 3 drives the extrusion roller 5 to rotate through the geared motor 30. The guide plate 4 guides the plastic granules to fall stably into the extrusion area. The concave part 7 and the convex part 19 are shaped to match, increasing the extrusion contact area and improving the extrusion efficiency. During the rotation, the strip 8 agitates the plastic granules and works with the extrusion plate 18 to flatten them, significantly increasing the surface area of the granules and forming tiny rough wrinkles on the surface. This greatly increases the contact friction between the granules and the screw threads and inner wall of the heated barrel, enhancing the screw's material carrying capacity, achieving stable material delivery, and ensuring the molding effect and product quality of the automotive air conditioning vents in the mold cavity.
[0033] like Figure 6 As shown in this embodiment, the long strip 8 has an arc-shaped surface 9, an extrusion surface 10, and an inclined surface connected in sequence. During the rotation of the long strip 8 driven by the extrusion roller 5, the arc-shaped surface 9 moves the plastic granules while cooperating with the extrusion plate 18 to extrude the plastic granules. After the plastic granules are extruded by the arc-shaped surface 9, the extrusion surface 10 extrudes them again. The arc-shaped surface 9 facilitates the stable movement of the plastic granules into the extrusion gap, and at the same time cooperates with the extrusion plate 18 to achieve the initial extrusion of the plastic granules, causing them to undergo initial deformation. The extrusion surface 10 performs a second extrusion on the initially deformed plastic granules to further thin the granules and ensure that the plastic granules are stably flattened.
[0034] like Figure 6 As shown in this embodiment, multiple anti-slip grooves 12 are provided on the arc-shaped surface 9. The anti-slip grooves 12 increase the friction between the arc-shaped surface 9 and the plastic particles, preventing slippage during the feeding process and ensuring that the arc-shaped surface 9 stably feeds the plastic particles to the extrusion area. At the same time, the anti-slip grooves 12 enhance the cooperating extrusion effect between the arc-shaped surface 9 and the extrusion plate 18, ensuring that the plastic particles are stably extruded and deformed.
[0035] like Figure 7 and Figure 9As shown in this embodiment, a wear-resistant plate 20 is fixed on both the extrusion plate 18 and the protrusion 19. Multiple protrusions 21 are fixed on the side of the wear-resistant plate 20. The protrusions 21 correspond to the recesses 7. The wear-resistant plate 20 greatly improves the wear resistance of the extrusion area of the extrusion plate 18 and the protrusion 19, and extends the service life of the extrusion plate 18. The protrusions 21 cooperate with the recesses 7 to not only improve the extrusion capacity of plastic particles, but also extrude the surface of flat particles into an uneven state, further improving their surface friction, thereby achieving stable conveying of raw materials.
[0036] like Figures 4-9 As shown in this embodiment, multiple pressure knives 13 are fixed at the middle position of the inner wall of the recessed portion 7. The pressure knives 13 are fixed on the inclined surface 11. The blades of the pressure knives 13 are arc-shaped. Multiple sets of protrusions 22 are fixed on the side of the wear-resistant plate 20. Each set of protrusions 22 consists of two protrusions 22, and the protrusions 22 are located between two adjacent protrusions 21. The protrusions 22 are right-angled triangles, and the right-angled sides of the two adjacent protrusions 22 correspond to each other. During the rotation of the pressure knives 13 driven by the roller 6, the pressure knives 13 pass between two adjacent protrusions 22. The blades of the pressure knives 13 have notches 14. During the extrusion process, some flat particles may get stuck between the two protrusions 22. The pressure knife 13 rotates with the circular roller 6 and passes between the two protrusions 22. Its arc-shaped blade can cut the stuck flat particles, thereby refining the particles. At the same time, it automatically cleans the stuck flat particles between the two protrusions 22, avoiding affecting subsequent extrusion operations. The notch 14 can drive the cut particles to move stably out from between the two protrusions 22. The smaller flat particles formed after being cut can fill the gaps between the larger flat particles, improving the stability of raw material conveying.
[0037] like Figure 5 and Figure 6 As shown in this embodiment, a second strip 15 is fixed on both the roller 6 and the recessed portion 7. The second strip 15 is fixed between two adjacent pressure knives 13 on the same inclined surface 11. An inclined surface 16 is formed on the second strip 15, and the inclined surface 16 is inclined in the opposite direction to the inclined surface 11. The second strip 15 improves the resistance of the pressure knives 13 to lateral deformation and extends their service life. On the other hand, it further improves the extrusion efficiency of the roller 6 on the plastic particles. The particles extruded by the second strip 15 are slightly less flattened than the particles extruded by the first strip 8, which can effectively fill the gaps between large flat particles and improve the stability of raw material conveying. The inclined surface 16 is inclined in the opposite direction to the inclined surface 11, and the resulting recessed structure can further move the plastic particles to the extrusion area, improving the extrusion efficiency.
[0038] like Figure 6As shown in this embodiment, multiple anti-slip strips 17 are fixed on the inclined surface 2 16. The anti-slip strips 17 increase the friction between the inclined surface 2 16 and the plastic particles. On the one hand, this improves the stability of the movement of the plastic particles by the inclined surface 2 16 and avoids slippage. On the other hand, it enhances the squeezing ability of the long strip 2 15 on the plastic particles and ensures that the plastic particles are squeezed stably.
[0039] like Figures 7-9 As shown in this embodiment, the wear-resistant plate 20 has multiple protruding strips 23 fixed on its side, and the recessed part 7 is located between two adjacent protruding strips 23. Multiple shallow grooves 24 are opened on the side of the protruding strips 23. The protruding strips 23 improve the ability to flatten plastic particles and ensure that the plastic particles are flattened stably. The shallow grooves 24 make the surface of the flattened particles formed by the protruding strips 23 slightly uneven, further increasing the roughness of the surface of the flattened particles, greatly improving the contact friction between the particles and the screw ribs and inner wall of the heating barrel, and realizing the stable conveying of raw materials.
[0040] like Figure 9 and Figure 10 As shown in this embodiment, heat dissipation components 25 are provided on the side of the extrusion plate 18 and the protrusion 19 away from the extrusion roller 5. The heat dissipation components 25 include fin one 26 and fin two 27 respectively embedded in the side of the extrusion plate 18 and the protrusion 19 away from the extrusion roller 5. During the extrusion process, the wear-resistant plate 20 and the extrusion plate 18 will generate a lot of heat due to sliding friction. If the temperature is too high, the plastic particles will melt slightly, affecting the extrusion and material discharge effect. Fin one 26 and fin two 27 greatly increase the heat dissipation area of the extrusion plate 18, the protrusion 19 and the wear-resistant plate 20, accelerate heat dissipation, and ensure the stability of the extrusion effect. At the same time, the fin one 26 and fin two 27 are embedded in the extrusion plate 18 and the protrusion 19, reducing the distance with the wear-resistant plate 20, reducing the heat conduction time, and further improving the heat dissipation capacity.
[0041] like Figure 9 and Figure 10 As shown in this embodiment, arc-shaped plates 28 are fixed on opposite sides of fin two 27. The arc-shaped plates 28 are fixed on the side of the protrusion 19 away from the extrusion roller 5. A connecting plate 29 is fixed on the inner wall of the arc-shaped plate 28. The side of the connecting plate 29 away from the arc-shaped plate 28 is fixedly connected to the side of fin two 27. The arc-shaped plate 28 increases the contact area between fin two 27 and the protrusion 19, improves the heat conduction capacity, accelerates the transfer of heat from the protrusion 19 to fin two 27, and enhances the heat dissipation capacity at the extrusion plate 18. The connecting plate 29 increases the contact area between the arc-shaped plate 28 and fin two 27, and while improving the heat dissipation capacity of fin two 27, it further strengthens the heat conduction effect and further improves the heat dissipation capacity of the extrusion area.
[0042] Working principle: Plastic granules are fed to hopper 2 and, guided by the guide plate 4 and the inclined section at the top of the extrusion plate 18, fall to the extrusion roller 5. The output shaft of the reduction motor 30 drives the circular roller 6 to rotate, which in turn drives the circular roller 6 and the long strip 8 to rotate synchronously. The arc-shaped surface 9 on the surface of the long strip 8 pushes the plastic granules, making them move steadily towards the extrusion gap between the extrusion roller 5 and the extrusion plate 18. The anti-slip groove 12 opened on the arc-shaped surface 9 increases the friction between the arc-shaped surface 9 and the plastic granules, preventing slippage during the pushing process, and at the same time improving the extrusion effect of the arc-shaped surface 9 and the extrusion plate 18. After the plastic granules enter the extrusion area, the arc-shaped surface 9 cooperates with the extrusion plate 18 to perform initial extrusion on the plastic granules, causing them to undergo initial deformation. The strip 8 continues to rotate, and the extrusion surface 10 on it performs secondary extrusion on the initially deformed plastic granules, further thinning the granules. The wear-resistant plate 20 fixed on the extrusion plate 18 and the protrusion 19 improves the wear resistance of the extrusion area and extends the service life of the extrusion plate 18. The convex strips 21 and 23 on the wear-resistant plate 20 cooperate with the extrusion roller 5, which not only improves the extrusion capacity of plastic granules, but also extrudes the surface of flat granules into an uneven state. The shallow grooves 24 on the side of the convex strip 23 make the surface of flat granules slightly uneven, further increasing the roughness of the surface of flat granules, greatly improving the contact friction between them and the screw ribs and inner wall of the heating barrel, and realizing stable conveying of raw materials. The pressure knife 13 on the inner wall of the recess 7 rotates with the circular roller 6. When the plastic particles are squeezed to the second protrusion 22 on the wear-resistant plate 20, the squeezed flat particles may get stuck between the two right-angled triangular protrusions 22. At this time, the pressure knife 13 passes between the two protrusions 22, and its arc-shaped blade cuts the stuck flat particles, thus refining the particles. The notch 14 on the blade can drive the cut particles to move out stably between the two protrusions 22, completing automatic cleaning and avoiding affecting subsequent extrusion operations. The two strips 15 on the roller 6 and the recessed part 7 improve the resistance to lateral deformation of the pressure knife 13 and extend its service life. On the other hand, the inclined surface 16 on the two strips 15 is inclined in the opposite direction to the inclined surface 11 of the first strip 8. The resulting recessed structure can further move the plastic particles to the extrusion area and improve the extrusion efficiency. The anti-slip strip 17 on the inclined surface 16 increases the friction and improves the stability of material feeding and extrusion. The particles extruded by the two strips 15 are slightly less flattened than the particles extruded by the first strip 8, which can effectively fill the gaps between large flat particles and further improve the stability of raw material conveying. During the extrusion process, the wear-resistant plate 20 and the extrusion plate 18 generate a lot of heat due to friction. If the temperature is too high, the plastic particles will melt slightly, thus affecting the extrusion and blanking effect. The extrusion plate 18 and the protrusion 19 are respectively inlaid with fin one 26 and fin two 27 on the side away from the extrusion roller 5. Fin one 26 and fin two 27 greatly increase the heat dissipation area and accelerate heat dissipation. The arc-shaped piece 28 on the opposite side of fin two 27 increases the contact area between fin two 27 and protrusion 19 and improves the heat conduction capacity. The connecting piece 29 on the inner wall of the arc-shaped piece 28 increases the contact area between the arc-shaped piece 28 and fin two 27. While improving the heat dissipation capacity of fin two 27, it further enhances the heat conduction effect and improves the heat dissipation capacity of the extrusion area. The flattened particles, after being extruded and refined, fall from the gap between the extrusion roller 5 and the extrusion plate 18 into the bottom of the hopper 2, and then into the heated barrel of the injection molding machine 1. Due to the larger surface area and stronger surface friction of the flat particles, the screw's material carrying capacity is significantly improved, achieving stable material delivery and ensuring the molding effect and product quality of the automotive air conditioning vents in the mold cavity.
[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. An injection molding device for processing an air outlet of an automobile air conditioner, comprising an injection molding machine (1), a hopper (2) is fixed at the feeding port of the injection molding machine (1), characterized in that, Also include: The feeding mechanism (3) includes the extrusion roller (5) which is rotatably connected in the hopper (2), the inner wall of the hopper (2) is respectively fixed with the guide plate (4) and the extrusion plate (18), the guide plate (4) is located above the extrusion roller (5), the extrusion plate (18) is located at the side of the extrusion roller (5), the extrusion roller (5) includes the round roller (6) which is rotatably connected in the hopper (2), the round roller (6) is integrally formed with a plurality of recesses (7), the outer wall of the hopper (2) is fixed with the speed reducer motor (30) through the support, the end of the round roller (6) is fixedly connected with the output end of the speed reducer motor (30), the extrusion plate (18) is integrally formed with the protruding portion (19) which is matched with the shape of the recess (7), and the round roller (6) and the recess (7) are jointly fixed with a plurality of long strips (8). When working, the speed reducer motor (30) drives the extrusion roller (5) to rotate, the long strip (8) pushes the plastic particles, and the extrusion roller (5) and the long strip (8) cooperate with the extrusion plate (18) to extrude the falling plastic particles.
2. The injection molding device for processing automobile air conditioner air outlet according to claim 1, characterized in that, The long strip (8) is provided with an arc surface (9), an extrusion surface (10) and an inclined surface which are sequentially connected, in the rotating process of the extrusion roller (5) driving the long strip (8), the arc surface (9) pushes the plastic particles and cooperates with the extrusion plate (18) to extrude the plastic particles, and the extrusion surface (10) extrudes the plastic particles again after the plastic particles are extruded by the arc surface (9).
3. The injection molding device for processing automobile air conditioner air outlet according to claim 2, characterized in that, A plurality of anti-skid grooves (12) are formed in the arc surface (9).
4. The injection molding device for processing automobile air conditioner air outlet according to claim 2, characterized in that, The extrusion plate (18) and the protruding portion (19) are jointly fixed with a wear-resistant plate (20), a plurality of convex strips (21) are fixed on the side surface of the wear-resistant plate (20), and the convex strips (21) correspond to the recesses (7).
5. The injection molding device for processing automobile air conditioner air outlet according to claim 4, characterized in that, A plurality of pressing knives (13) are fixed at the middle positions of the inner walls of the recesses (7), the pressing knives (13) are fixed on the inclined surface (11), the cutting edges of the pressing knives (13) are arc-shaped, a plurality of groups of convex strips (22) are fixed on the side surface of the wear-resistant plate (20), the number of convex strips (22) in each group is two, the convex strips (22) are located between the adjacent two convex strips (21), the convex strips (22) are in the shape of right-angled triangle, the right-angle sides of the adjacent two convex strips (22) correspond to each other, in the rotating process of the round roller (6) driving the pressing knives (13), the pressing knives (13) pass between the adjacent two convex strips (22), and the cutting edges of the pressing knives (13) are provided with notches (14).
6. The injection molding device for processing automobile air conditioner air outlet according to claim 5, characterized in that, The round roller (6) and the recess (7) are jointly fixed with a long strip (15), the long strip (15) is fixed between the adjacent two pressing knives (13) on the same inclined surface (11), the long strip (15) is provided with an inclined surface (16), and the inclined surface (16) is opposite to the inclined direction of the inclined surface (11).
7. The injection molding device for processing automobile air conditioner air outlet according to claim 6, characterized in that, A plurality of anti-skid strips (17) are fixed on the inclined surface (16).
8. The injection molding device for processing automobile air conditioner air outlet according to claim 4, characterized in that, A plurality of convex strips (23) are fixed on the side surface of the wear-resistant plate (20), the recesses (7) are located between the adjacent two convex strips (23), and a plurality of shallow grooves (24) are formed in the side surface of the convex strips (23).
9. The injection molding device for processing automobile air conditioner air outlet according to claim 1, characterized in that, The extrusion plate (18) and the convex part (19) are provided with heat dissipation assemblies (25) on the side away from the extrusion roller (5), and the heat dissipation assemblies (25) comprise fin one (26) and fin two (27) respectively embedded on the side of the extrusion plate (18) and the convex part (19) away from the extrusion roller (5).
10. The injection molding device for processing automobile air conditioner air outlet according to claim 9, characterized in that, The opposite sides of the fin two (27) are fixed with arc-shaped sheets (28), the arc-shaped sheets (28) are fixed on the side of the convex part (19) away from the extrusion roller (5), the inner wall of the arc-shaped sheet (28) is fixed with a connecting sheet (29), and the side of the connecting sheet (29) away from the arc-shaped sheet (28) is fixedly connected with the side of the fin two (27).