Automobile plastic part injection molding assembly

Abstract

The utility model discloses an injection molding assembly for an automobile plastic part, which belongs to the technical field of injection molding and comprises an upper injection molding die and a lower injection molding die. The lower injection mold is located in the fixed base, a supporting plate is arranged above the fixed base, a threaded sleeve is movably installed on the supporting plate, a driving assembly for driving the threaded sleeve is arranged on the supporting plate, limiting seats are fixed to the two sides of the top of the fixed base, through grooves are formed in the two sides of the fixed base, and the limiting seats are arranged in the through grooves. According to the utility model, the lower injection mold is translated through the translation assembly, then the lower injection mold is turned over upwards under the cooperation of the second fixing rod and the limiting seat, the lower injection mold is maintained to be vertical, and then the ejection cylinder on the lower injection mold drives the ejection plate to move to eject an injection part out of the lower injection mold; and the whole process does not need manual participation, so that the processing coherence can be guaranteed, and the injection molding processing efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to an injection molding assembly for automotive plastic parts. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding include high production speed and efficiency, automated operation, a wide variety of designs and shapes (from simple to complex), and sizes ranging from large to small. It also produces dimensionally accurate products, facilitates product updates and replacements, and can create complex shapes. Injection molding is suitable for mass production and molding processes involving complex shapes.

[0003] In the prior art, Chinese utility model publication number CN221605015U discloses an injection mold for producing plastic parts for automotive sensors, including an upper mold, two lower molds, and a base. The lower molds are located at the bottom of the upper mold, and the base is located on the surface of the lower molds. The top of the base has a positioning groove that slides and connects with the lower molds. This utility model, by setting up two lower molds, a positioning groove, a transmission mechanism, a moving mechanism, and a reset component, uses the transmission mechanism to drive the two lower molds, the moving mechanism to move the lower molds along the trajectory of the groove, and the reset component to improve the reset effect of the second inclined panel. It has the advantage of facilitating material handling by the user and solves the problems of existing molds requiring manual material handling during the production of plastic parts for sensors, and the plastic parts adhering to the mold surface after injection molding, which is inconvenient for users to remove due to the small size of the plastic parts.

[0004] In the above technical solution, the injection molded part is separated from the inner walls of the two sets of lower molds. It is necessary to manually operate the button and manually remove the injection molded part from the lower mold. Compared with traditional injection molded components, the injection molded part is easier to separate from the lower mold, but there is no significant improvement in processing efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an injection molding assembly for automotive plastic parts. A drive assembly rotates a threaded sleeve, which moves the upper injection mold upwards using a threaded rod. Then, a translation assembly drives a first fixed rod to slide within a through groove, causing the lower injection mold to flip under the cooperation of a slide groove and a limiting seat. This makes the lower injection mold stand upright, and with the assistance of an ejector assembly, the injection molded part inside the lower injection mold is ejected and falls. This achieves full automation, eliminating the need for manual operation, thus improving processing efficiency. Furthermore, it effectively avoids the problem of the injection molded part being adsorbed by the inner wall of the lower injection mold, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an injection-molded assembly for automotive plastic parts, comprising:

[0007] Upper injection mold and lower injection mold;

[0008] The lower injection mold is located inside a fixed base. A support plate is provided above the fixed base. A threaded sleeve is movably mounted on the support plate. A drive assembly for driving the threaded sleeve is provided on the support plate.

[0009] Limit seats are fixed on both sides of the top of the fixed base. Through slots are opened on both sides of the fixed base. First fixing rods are fixed on both sides of the injection mold. The first fixing rods pass through the through slots and are rotatably connected to the fixing blocks through bearings. Second fixing rods are installed on both sides of the top of the injection mold and are slidably arranged in the limit seats. A box is fixed on the outside of the fixed base. The inner cavity of the box is provided with a translation component for moving the fixing blocks.

[0010] The lower injection mold is provided with an ejection assembly for ejecting the injection molded part.

[0011] Preferably, the drive assembly includes a drive motor, the output shaft of the drive motor is fixed with a drive gear, the outer side of the threaded sleeve is fixed with a driven gear, the drive gear and the driven gear mesh with each other on opposite sides, and the threaded sleeve is internally threaded with a threaded rod fixed to the top of the injection mold.

[0012] Preferably, the translation assembly includes a translation screw that rotates on both sides of the inner cavity of the housing via bearings. The translation screw is threaded through a fixing block. One end of the translation screw is fixed with a driven pulley. A servo motor is fixed to the outside of the housing. The output shaft of the servo motor passes through the inner cavity of the housing and is fixed with a drive pulley. The drive pulley and the outer side of the driven pulley are connected by a connecting belt.

[0013] Preferably, the ejection assembly includes an ejection plate located at the bottom of the lower injection mold cavity, the bottom of the lower injection mold cavity is provided with a groove for receiving the ejection plate, and an ejection cylinder is fixed at the bottom of the lower injection mold, the piston rod of the ejection cylinder passing through the lower injection mold and fixedly connected to the ejection plate.

[0014] Preferably, a traction spring is fixed to the top of the inner cavity of the limiting seat, and the bottom of the traction spring is sleeved on the outside of the second fixing rod.

[0015] Preferably, a support block is movably mounted on the outer side of the first fixing rod via a bearing, and the support block is slidably disposed within the through groove.

[0016] Preferably, positioning posts are fixed around the bottom of the upper injection mold, and positioning holes that cooperate with the positioning posts are opened on the top of the lower injection mold.

[0017] Preferably, heat dissipation fins for heat dissipation are installed on both the front and rear sides of the lower injection mold, and an injection port is provided on the top of the upper injection mold.

[0018] Preferably, the top of the fixed base is fixed with support columns around its perimeter, and the support plate is fixed to the top of the support columns.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model uses a translation component to translate the lower injection mold. Then, with the cooperation of the second fixed rod and the limiting seat, the lower injection mold flips upward to keep it upright. Then, the ejector cylinder on the lower injection mold drives the ejector plate to move, ejecting the injection molded part from the lower injection mold. Under the action of gravity, it falls automatically from the lower injection mold. The whole process does not require manual intervention, which can ensure the continuity of processing and effectively improve the efficiency of injection molding.

[0021] 2. This utility model uses a drive assembly to move the threaded rod up and down, thereby adjusting the height of the upper injection mold, which facilitates the closing and demolding of the upper and lower injection molds, while providing sufficient space for the lower injection mold to flip. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the lower injection mold of this utility model after it has been flipped over;

[0024] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0025] Figure 4 This is a top view cross-sectional three-dimensional structural diagram of the box body of this utility model;

[0026] Figure 5 This is a top view of the three-dimensional structure of the fixed base of this utility model;

[0027] Figure 6 This is a cross-sectional three-dimensional structural diagram of the injection mold of this utility model;

[0028] Figure 7 This is a cross-sectional three-dimensional structural diagram of the limiting seat of this utility model.

[0029] Numbered components in the diagram: 1. Upper injection mold; 2. Lower injection mold; 3. Fixed base; 4. Support column; 5. Support plate; 6. Threaded sleeve; 7. Threaded rod; 8. Drive assembly; 81. Drive motor; 82. Drive gear; 83. Driven gear; 9. Limit seat; 10. Through slot; 11. First fixing rod; 12. Fixing block; 13. Second fixing rod; 14. Housing; 15. Translation assembly; 151. Translation screw; 152. Driven pulley; 153. Servo motor; 154. Drive pulley; 16. Ejection assembly; 161. Ejection plate; 162. Groove; 163. Ejection cylinder; 17. Traction spring; 18. Support block; 19. Positioning column; 20. Positioning hole; 21. Heat dissipation fins. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] This utility model provides, for example Figures 1-7 The illustrated automotive plastic injection molding assembly includes: an upper injection mold 1 and a lower injection mold 2; the lower injection mold 2 is located inside a fixed base 3, and support columns 4 are fixed around the top of the fixed base 3. The height of the support columns 4 should be greater than the length of the lower injection mold 2 to ensure that the lower injection mold 2 is always below the upper injection mold 1 after being flipped, preventing the lower injection mold 2 from colliding with the upper injection mold 1. A support plate 5 is fixed to the top of the support columns 4, and a threaded sleeve 6 is rotatably connected to the center of the support plate 5 through a bearing. A threaded rod 7 is threadedly connected to the inner cavity of the threaded sleeve 6. The bottom of the threaded rod 7 is fixedly connected to the top of the upper injection mold 1. The length of the threaded rod 7 is greater than the length of the support column 4 to ensure that the threaded rod 7 is always threadedly connected to the threaded sleeve 6, and the upper injection mold 1 is in contact with the support column 4. A drive assembly 8 for driving the threaded sleeve 6 is provided on the top of the support plate 5.

[0032] Limit seats 9 are fixed on both sides of the top of the fixed base 3. Through slots 10 are opened on both sides of the fixed base 3. First fixing rods 11 are fixed on both sides of the injection mold 2. The first fixing rods 11 pass through the through slots 10 and are rotatably connected to the fixing block 12 through the bearing. Fixed seats are fixed on both sides of the top of the injection mold 2. Second fixing rods 13 are fixed on the fixed seats. The second fixing rods 13 pass through the inner cavity of the limit seats 9. A box 14 is fixed on the outer side of the fixed base 3. A translation component 15 for moving the fixing block 12 is provided in the inner cavity of the box 14.

[0033] The lower injection mold 2 is provided with an ejection assembly 16 for ejecting the injection molded part; the ejection assembly 16 is sealed to prevent leakage after the raw material is injected.

[0034] The lower injection mold 2 is translated by the translation component 15. Then, the lower injection mold 2 is flipped upward with the cooperation of the second fixed rod 13 and the limit seat 9 to keep the lower injection mold 2 upright. Then, the ejector cylinder 163 on the lower injection mold 2 drives the ejector plate 161 to move, ejecting the injection molded part from the lower injection mold 2. Under the action of gravity, it falls automatically from the lower injection mold 2. The whole process does not require manual intervention, which can ensure the continuity of processing and effectively improve the efficiency of injection molding.

[0035] Among them, such as Figure 3 As shown:

[0036] The drive assembly 8 includes a drive motor 81, with a drive gear 82 fixed to the output shaft of the drive motor 81. A driven gear 83 is fixed to the outer side of the threaded sleeve 6. The drive gear 82 and the driven gear 83 mesh with each other on opposite sides. The drive motor 81 drives the drive gear 82 to rotate, and the drive gear 82 drives the threaded sleeve 6 with the driven gear 83, causing the threaded rod 7 to move up and down inside the threaded sleeve 6, thereby raising and lowering the injection mold 1.

[0037] Furthermore, such as Figure 4 As shown:

[0038] The translation assembly 15 includes translation screws 151 that rotate on both sides of the inner cavity of the housing 14 via bearings. The translation screws 151 are threaded through the fixing block 12. One end of the translation screws 151 is fixed with a driven pulley 152. A servo motor 153 is fixed on the outside of the housing 14. The output shaft of the servo motor 153 passes through the inner cavity of the housing 14 and is fixed with a drive pulley 154. The drive pulley 154 and the driven pulley 152 are connected by a connecting belt. The servo motor 153 drives the drive pulley 154 to rotate. Then, the drive pulley 154 drives the driven pulley 152 to rotate via the connecting belt, thus synchronously driving the two sets of translation screws 151. Then, the fixing block 12 is used to pull the first fixing rod 11 to move, so that the first fixing rod 11 moves in the through groove 10, causing the injection mold 2 to flip.

[0039] Preferred, such as Figure 5-6 As shown:

[0040] The ejection assembly 16 includes an ejection plate 161 located at the bottom of the inner cavity of the lower injection mold 2. A groove 162 for receiving the ejection plate 161 is provided at the bottom of the inner cavity of the lower injection mold 2. An ejection cylinder 163 is fixed at the bottom of the lower injection mold 2. The piston rod of the ejection cylinder 163 passes through the lower injection mold 2 and is fixedly connected to the ejection plate 161. The ejection cylinder 163 drives the ejection plate 161 to move out of the groove 162, thereby ejecting the molded injection part and separating the injection part from the lower injection mold 2.

[0041] It is worth noting that, such as Figure 7 As shown:

[0042] A traction spring 17 is fixed at the top of the inner cavity of the limiting seat 9. The bottom of the traction spring 17 is sleeved on the outside of the second fixed rod 13. The traction spring 17 facilitates the upward traction of the second fixed rod 13, ensuring that one end of the second fixed rod 13 of the injection mold 2 tilts upward and maintains the vertical rotation of the injection mold 2.

[0043] In a further preferred embodiment, such as Figure 5 As shown:

[0044] A support block 18 is movably mounted on the outer side of the first fixed rod 11 via a bearing. The support block 18 is slidably disposed in the through groove 10. With the cooperation of the support block 18, the first fixed rod 11 is easily supported, while preventing the injection mold 2 from shaking and maintaining the stable rotation of the injection mold 2.

[0045] In addition, such as Figure 3 and Figure 5 As shown:

[0046] Positioning pins 19 are fixed around the bottom of the upper injection mold 1, and positioning holes 20 that cooperate with the positioning pins 19 are opened on the top of the lower injection mold 2. The cooperation between the positioning pins 19 and the positioning holes 20 facilitates the precise positioning of the upper injection mold 1 and the lower injection mold 2, ensuring the processing quality of the injection molded parts.

[0047] In this embodiment, as Figure 1-2 As shown:

[0048] The lower injection mold 2 is equipped with heat dissipation fins 21 on both the front and rear sides for heat dissipation treatment. The upper injection mold 1 is provided with an injection port on the top. The heat dissipation fins 21 are used to provide auxiliary heat dissipation treatment for the lower injection mold 2. The injection port is used to inject injection liquid into the mold.

[0049] In practical use, after the injection molded part is formed, the drive motor 81 is started. The drive motor 81 drives the drive gear 82 to rotate, which, together with the driven gear 83, drives the threaded sleeve 6, causing the threaded rod 7 to move upward inside the threaded sleeve 6, which in turn moves the upper injection mold 1 upward. Then, the upper injection mold 1 separates from the injection molded part. Subsequently, the servo motor 153 drives the drive pulley 154 to rotate. The drive pulley 154 drives the driven pulley 152 and the translation screw 151 to rotate through the connecting belt, which moves the fixing block 12 horizontally. The fixing block 12 pulls the lower injection mold 2 through the first fixing rod 11. The other end of the lower injection mold 2 tilts upward under the traction of the traction spring 17. Then, the second fixing rod 13 moves upward inside the limit seat 9, causing the lower injection mold 2 to flip and stand upright. During this period, the fixed cylinder drives the ejector plate 161 to eject the injection molded part from the lower injection mold 2. Then, the injection molded part falls due to gravity, realizing the rapid removal of the injection molded part.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection-molded assembly for automotive plastic parts, characterized in that, include: upper injection mold (1) and lower injection mold (2); The injection mold (2) is located inside the fixed base (3). A support plate (5) is provided above the fixed base (3). A threaded sleeve (6) is movably installed on the support plate (5). A drive assembly (8) for driving the threaded sleeve (6) is provided on the support plate (5). The fixed base (3) has limit seats (9) fixed on both sides of the top. The fixed base (3) has through slots (10) on both sides. The injection mold (2) has first fixing rods (11) fixed on both sides. The first fixing rods (11) pass through the through slots (10) and are rotatably connected to the fixing block (12) through the bearing. The injection mold (2) has second fixing rods (13) installed on both sides of the top. The fixed base (3) has a box (14) fixed on the outside. The box (14) has a translation component (15) for moving the fixing block (12) in its inner cavity. The lower injection mold (2) is provided with an ejection assembly (16) for ejecting the injection molded part.

2. The automotive plastic injection molding assembly according to claim 1, characterized in that: The drive assembly (8) includes a drive motor (81), the output shaft of which is fixed with a drive gear (82), and the outer side of the threaded sleeve (6) is fixed with a driven gear (83). The drive gear (82) and the driven gear (83) mesh with each other on opposite sides. The threaded sleeve (6) is internally threaded with a threaded rod (7) fixed to the top of the injection mold (1).

3. The automotive plastic injection molding assembly according to claim 1, characterized in that: The translation assembly (15) includes a translation screw (151) that rotates on both sides of the inner cavity of the housing (14) via bearings. The translation screw (151) is threaded through the fixing block (12). One end of the translation screw (151) is fixed with a driven pulley (152). A servo motor (153) is fixed on the outer side of the housing (14). The output shaft of the servo motor (153) passes through the inner cavity of the housing (14) and is fixed with a drive pulley (154). The drive pulley (154) and the outer side of the driven pulley (152) are connected by a connecting belt.

4. The automotive plastic injection molding assembly according to claim 1, characterized in that: The ejection assembly (16) includes an ejection plate (161) located at the bottom of the inner cavity of the injection mold (2). The bottom of the inner cavity of the injection mold (2) is provided with a groove (162) for receiving the ejection plate (161). An ejection cylinder (163) is fixed at the bottom of the injection mold (2). The piston rod of the ejection cylinder (163) passes through the injection mold (2) and is fixedly connected to the ejection plate (161).

5. The automotive plastic injection molding assembly according to claim 1, characterized in that: A traction spring (17) is fixed to the top of the inner cavity of the limiting seat (9), and the bottom of the traction spring (17) is sleeved on the outside of the second fixing rod (13).

6. The automotive plastic injection molding assembly according to claim 1, characterized in that: A support block (18) is movably mounted on the outer side of the first fixing rod (11) via a bearing, and the support block (18) is slidably disposed in the through groove (10).

7. The automotive plastic injection molding assembly according to claim 1, characterized in that: The bottom of the upper injection mold (1) is fixed with positioning posts (19) around its perimeter, and the top of the lower injection mold (2) is provided with positioning holes (20) that cooperate with the positioning posts (19).

8. The automotive plastic injection molding assembly according to claim 1, characterized in that: The lower injection mold (2) is equipped with heat dissipation fins (21) on both the front and rear sides for heat dissipation treatment, and the upper injection mold (1) is provided with an injection port on the top.

9. The automotive plastic injection molding assembly according to claim 1, characterized in that: The fixed base (3) has support columns (4) fixed around its top, and the support plate (5) is fixed on the top of the support columns (4).

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