Injection molding device for automobile parts

Abstract

The present invention belongs to the field of intelligent manufacturing technology, specifically an injection molding device for automobile parts. It includes a fixed seat, a movable mold, a fixed mold and an injection molding structure, etc. The movable mold is connected to the support through a cylinder. The fixed seat is provided with a fixed mold that is engaged with the movable mold. The movable mold and the fixed mold are closed to form an injection cavity. An injection molding structure for molding the parts is provided between the joint surfaces of the movable mold and the fixed mold. The present invention uses an injection molding tube with an adjustable angle design and a circumferentially distributed injection port to enable the molten material to be injected and filled into the injection molding cavity from multiple directions simultaneously, which is conducive to reducing flow path differences, avoiding bubbles and shrinkage marks, and is particularly suitable for complex structural parts; and the narrowing port design at the end of the injection molding channel can accelerate the flow rate of the molten material, thereby facilitating the improvement of the density of the injection filling of the molded parts; and is conducive to automatically forming a shearing cut for the waste material remaining on the molded parts, thereby facilitating the smooth removal of the waste material.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent manufacturing, and in particular relates to an injection molding device for automobile parts. Background Art

[0002] Existing injection molding equipment for automotive parts often uses a fixed injection gate design. During the injection molding process, the molten material has a single flow path and uncontrollable direction, resulting in uneven material filling. For structurally complex automotive parts (such as multi-curved components and internal rib structures), the material easily forms flow stagnation areas within the mold cavity, causing defects such as bubbles, sink marks, or stress concentrations, significantly reducing the yield of finished products. Furthermore, fixed injection gates are difficult to adapt to the runner design requirements of different molds, limiting the versatility of the equipment. Furthermore, after injection molding, the injection runner waste (such as gates and overflow) at the edges of the part must be manually removed, which is time-consuming and poses safety risks. This undoubtedly increases subsequent quality inspection costs.

[0003] In view of this, an automobile parts injection molding device with an adjustable injection molding structure and automatic waste cutting is proposed to solve the above technical problems. Summary of the Invention

[0004] In order to overcome the limitations of existing injection molding devices in actual use, the technical problem of the present invention is to provide an automobile parts injection molding device with an adjustable injection molding structure and automatic waste cutting.

[0005] The technical implementation scheme of the present invention is: an injection molding device for automobile parts, comprising a movable seat, a movable mold, a fixed seat, a fixed mold and a feeding pipe, the movable mold is connected to the support through a cylinder, and the fixed seat is provided with a fixed mold that is engaged with the movable mold, and the movable mold and the fixed mold are closed to form an injection cavity, and also include an injection structure, a ejection structure and a cutter, an injection structure for molding accessories is provided between the joint surfaces of the movable mold and the fixed mold, the injection structure comprises a regulator, an injection tube and a protrusion, the injection tube is rotatably connected to the middle of the fixed mold, and the outer end of the injection tube is connected to the feeding pipe through a rotary joint, an regulator for fine-tuning the rotation angle of the injection tube is provided in the fixed mold, a plurality of injection ports are provided at the inner end of the injection tube at intervals along the circumferential direction, an injection channel connected to each injection port is provided on the molding surface of the fixed mold, and a protrusion that seals with the injection channel port is provided on the molding surface of the movable mold, a ejection structure for ejecting the molded accessories is also provided in the fixed mold, and the bottom of the movable seat is also provided with a The servo motor is fixed on the inner side of the fixed seat, and the driving gear is arranged on the output shaft of the servo motor and meshed with the adjusting gear. The servo motor controls the rotation of the driving gear and the adjusting gear to control the circumferential rotation angle of the injection molding tube. The ejecting structure includes an ejecting frame, an ejector and two cylinders. The ejecting frame is slidably arranged in the inner cavity of the fixed seat. The ejector is spaced apart at intervals. The ejector slides through the fixed mold and the end is flush with the bottom surface of the injection molding cavity. The fixed seat is provided with two cylinders for controlling the movement and extension of the ejecting frame and the ejector; the cutter includes a connecting seat and a cutting knife holder. The connecting seat is arranged at the bottom of the moving seat, and the cutting knife holder is arranged on the connecting seat. When the moving seat is closed in the direction of the fixed mold, the cutting knife holder moves with it and synchronously cuts off the waste material on the clamping and fixing accessories. The connecting end of the injection molding channel and the injection molding cavity is respectively provided with a narrowing opening with a gradually shrinking cross-section.

[0006] As a further improvement of the above technical solution, it also includes a clamping mechanism, which includes a guide rail, an electric bidirectional screw, a clamping arm and a clamping block. A guide rail is provided in the middle of the stand, and an electric bidirectional screw is installed in the guide rail. The two clamping arms are slidably sleeved in the guide rail and respectively cooperate with the electric bidirectional screw threads. A clamping block with anti-slip grooves is provided at the end of the clamping arm for clamping and fixing the accessories.

[0007] As a further improvement of the above technical solution, the cutting tool holder and the clamping arm are arranged horizontally relative to each other.

[0008] As a further improvement of the above technical solution, it also includes an automatic diversion component, which includes a connecting plate, a guide plate and an electric conveyor belt. A connecting plate is provided at the bottom of the stand, and a guide plate is connected to the lower side of the connecting plate. Electric conveyor belts for sorting and transporting finished accessories and waste are respectively provided on both sides of the guide plate and between the connecting plate.

[0009] As a further improvement of the above technical solution, the guide plate adopts an inverted V-shaped structure design to automatically guide the finished product accessories and the cut waste to the electric conveyor belt respectively.

[0010] As a further improvement of the above technical solution, it also includes an intelligent material-grabbing robot, which includes a horizontal electric slide rail, a vertical electric slide rail, a connecting arm and an electric suction cup. The horizontal electric slide rail is arranged on the top of the support, and the vertical electric slide rail is installed on its slider. The slider of the vertical electric slide rail is connected to an electric suction cup for material grabbing through a connecting arm.

[0011] Compared with the existing technology, the beneficial effects are as follows: the present invention uses an injection tube with an adjustable angle design and a circumferentially distributed injection port to enable the molten material to be injected and filled into the injection cavity simultaneously from multiple directions, which is beneficial to reducing flow path differences and avoiding bubbles and shrinkage marks, and is especially suitable for complex structural accessories; and the narrowed mouth design at the end of the injection channel can accelerate the flow rate of the molten material, which is beneficial to improving the density of injection filling of the molded accessories; and is beneficial to automatically form a shear cut on the waste material remaining on the molded accessories, which is beneficial to smooth cutting of the waste material; in addition, the device can perform intelligent automatic injection molding of accessories and automatic batch cutting of waste material through the PLC controller, which is beneficial to improving the efficiency and quality of injection molding of accessories and avoiding manual cutting of waste material remaining on accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the connection structure of the fixing seat, fixed mold and injection tube of the present invention.

[0014] Figure 3 It is a schematic diagram of the connection structure of the movable seat, movable mold, protrusion and cutter of the present invention.

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the injection molding structure, regulator and ejection structure of the present invention.

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the invention's injection molding structure, regulator and ejector structure from another perspective.

[0017] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping mechanism and the cutter of the present invention.

[0018] Figure 7 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention.

[0019] Figure 8 This is a schematic diagram of the three-dimensional structure of the intelligent material-retrieving robot of the present invention.

[0020] Figure 9 It is a schematic diagram of the three-dimensional structure of the automatic diversion component of the present invention.

[0021] The meaning of the reference numerals in the figure: 1: stand, 2: guide rod, 3: movable seat, 30: movable mold, 31: protrusion, 32: support, 320: PLC controller, 33: cylinder 1, 4: fixed seat, 40: fixed mold, 401: injection cavity, 41: injection channel, 42: narrowing mouth, 5: feeding pipe, 50: injection pipe, 51: injection port, 6: adjusting gear, 60: servo motor, 61: drive Moving gear, 7: Ejector rack, 70: Ejector pin, 71: Cylinder 2, 8: Guide rail, 80: Electric bidirectional screw, 81: Clamping arm, 82: Clamping block, 9: Horizontal electric slide rail, 90: Vertical electric slide rail, 91: Connecting arm, 92: Electric suction cup, 10: Connecting seat, 101: Cutting tool holder, 11: Connecting plate, 1101: Guide plate, 1102: Electric conveyor belt, a: Accessories, b: Waste. DETAILED DESCRIPTION

[0022] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, rather than all of the contents.

[0023] Example: The present invention provides an automobile parts injection molding device, see Figures 1 to 6, including a stand 1, a guide rod 2, a movable seat 3, a movable mold 30, a support 32, a cylinder 33, a fixed seat 4, a fixed mold 40, a feeding pipe 5, an injection molding structure, a material ejection structure and a material cutter. A guide rod 2 is provided on the top right side of the stand 1, and a movable seat 3 is slidingly provided on the guide rod 2. A cylinder 33 is installed on the right edge of the stand 1 through the support 32. The cylinder 33 is driven and connected to the movable seat 3. The movable mold 30 is provided on the movable seat 3. A fixed seat 4 is provided on the top left side of the stand 1, and a fixed mold that fits with the movable mold 30 is provided on the fixed seat 4. 40, the movable mold 30 and the fixed mold 40 are closed to form an injection mold cavity 401 for shaping the accessory a. An injection molding structure is provided between the mold surfaces of the movable mold 30 and the fixed mold 40. The injection molding structure facilitates real-time control of the injection amount of the material through an adjustable injection molding angle. The injection molding structure includes a regulator, an injection molding tube 50 and a protrusion 31. The injection molding tube 50 is rotatably connected to the middle of the fixed mold 40, and the outer end of the injection molding tube 50 is connected to the feed pipe 5 through a rotary joint. A regulator for fine-tuning the rotation angle of the injection molding tube 50 is provided in the fixed mold 40. The inner end of the tube 50 is provided with four injection ports 51 spaced apart along the circumferential direction. The molding surface of the fixed mold 40 is provided with an injection channel 41 connected to each injection port 51. The molding surface of the movable mold 30 is provided with a protrusion 31 that seals with the port of the injection channel 41. The protrusion 31 on the movable mold 30 forms a sealing structure with the port of the injection channel 41, which can effectively prevent overflow. The injection channel 41 and the injection cavity 401 are connected at the ends thereof with a narrowing port 42 with a tapered cross section, which can accelerate the flow rate of the molten material, thereby facilitating the improvement of the The density of injection filling of the molding accessories is improved; and it is conducive to automatically forming a shear cut on the waste material remaining on the molding accessories, which is conducive to the smooth removal of the waste material; a lifting structure is also provided in the fixed mold 40, which is used to eject the injection-molded accessories a by controlling the lifting structure to extend. A cutter is also provided at the bottom of the movable seat 3, which can move synchronously with the movable seat 3 to synchronously remove the waste material b remaining on the accessories a, so that the waste material b after removal can be recycled and reused, which is conducive to improving the efficiency and utilization rate of waste removal.

[0024] For further information, see Figure 4 and Figure 5 The regulator includes an adjusting gear 6 sleeved on the outer periphery of the injection molding tube 50, a servo motor 60 fixed to the inner side of the fixing seat 4, and a driving gear 61 provided on the output shaft of the servo motor 60 and meshing with the adjusting gear 6. The servo motor 60 controls the rotation of the driving gear 61 and the adjusting gear 6 to control the circumferential rotation angle of the injection molding tube 50, which is convenient for real-time control of the injection molding material, thereby helping to improve the molding quality of the accessory a.

[0025] For further information, see Figure 4 and Figure 5The ejection structure includes an ejection rack 7, an ejector pin 70 and a second cylinder 71. The ejection rack 7 is slidably arranged in the inner cavity of the fixed seat 4. The ejector pins 70 are spaced apart on the ejection rack 7. The ejector pins 70 slide through the fixed mold 40 and the ends are flush with the bottom surface of the injection cavity 401. The fixed seat 4 is provided with a second cylinder 71 for controlling the movement and extension of the ejection rack 7 and the ejector pins 70. The synchronous ejection of the array-type ejector pins 70 is conducive to dispersing the demoulding stress of the accessory a and preventing the molded accessory a product from being deformed or scratched on the surface. The ends of the ejector pins 70 are flush with the bottom surface of the cavity, which can effectively avoid residual protrusions 31 that affect the product quality of the molded accessory a.

[0026] For further information, see Figure 3 and Figure 6 The cutter includes a connecting seat 10 and a cutting tool holder 101. The connecting seat 10 is arranged at the bottom of the movable seat 3, and the cutting tool holder 101 is arranged on the connecting seat 10. When the movable seat 3 is closed in the direction of the fixed mold 40, the cutting tool holder 101 moves with it and synchronously cuts off the waste material b on the clamped accessory a; and the cutting tool holder 101 is arranged horizontally relative to the clamping arm 81, which is conducive to the precise cutting of the waste material b remaining on the accessory a after molding.

[0027] For further information, see Figure 1 、 Figure 6 and Figure 7 , and also includes a clamping mechanism, which includes a guide rail 8, an electric bidirectional screw 80, a clamping arm 81 and a clamping block 82. A guide rail 8 is provided in the middle of the stand 1, and an electric bidirectional screw 80 is installed in the guide rail 8. The two clamping arms 81 are slidably sleeved in the guide rail 8 and are respectively threaded with the electric bidirectional screw 80. The end of the clamping arm 81 is provided with a clamping block 82 with anti-slip grooves for clamping and fixing the accessory a.

[0028] For further information, see Figure 1 and Figure 9 , also includes an automatic diversion component, the automatic diversion component includes a connecting plate 11, a guide plate 1101 and an electric conveyor belt 1102. A connecting plate 11 is provided at the bottom of the stand 1, and a guide plate 1101 is connected to the lower side of the connecting plate 11. Electric conveyor belts 1102 for sorting and transporting finished accessories a and waste b are respectively provided on both sides of the guide plate 1101 and between the connecting plate 11; the guide plate 1101 adopts an inverted V-shaped structure design, which is conducive to the finished accessories a and the cut waste b automatically sliding to the electric conveyor belts 1102 on the left and right sides through the inverted V-shaped guide plate 1101, which can realize the convenient automatic sorting of the finished accessories a and the waste b, which is conducive to reducing the cost of manual intervention, further improving the automation level of the device, and thus effectively improving the efficiency of injection molding of the accessories a.

[0029] For further information, see Figure 1 and Figure 8, and also includes an intelligent material-grabbing manipulator, which includes a horizontal electric slide rail 9, a vertical electric slide rail 90, a connecting arm 91 and an electric suction cup 92. The horizontal electric slide rail 9 is arranged on the top of the support 32, and the vertical electric slide rail 90 is installed on its slider. The slider of the vertical electric slide rail 90 is connected to an electric suction cup 92 for grabbing materials through a connecting arm 91; through the cooperation of the horizontal electric slide rail 9, the vertical electric slide rail 90 and the electric suction cup 92, the accessory a ejected after molding can be adsorbed and taken out and moved downward to the designated cutting area.

[0030] In addition, it is important to note that Figures 1 to 9 A PLC controller 320 is also installed on the support 32, and the PLC controller 320 is electrically connected to the cylinder 1 33, the servo motor 60, the cylinder 2 71, the electric bidirectional screw 80, the horizontal electric slide 9, the vertical electric slide 90, the electric suction cup 92 and the electric conveyor belt 1102 respectively; this device significantly improves the accuracy, efficiency and automation level of the injection molding of automotive parts a through multi-directional injection, intelligent ejection of waste b synchronous processing and fully automatic sorting technology, and can be widely used in the mass production of complex structure automotive parts.

[0031] During use, the PLC controller 320 controls the cylinder 33 to drive the movable seat 3 to slide along the guide rod 2, driving the movable mold 30 and the fixed mold 40 to close and form a sealed injection cavity 401; the PLC controller 320 controls the servo motor 60 to engage with the adjustment gear 6 through the driving gear 61, and then can control the injection tube 50 to rotate to a preset angle, so that the injection port 51 is aligned with the injection channel 41; the molten material is injected into the injection channel 41 through the feeding pipe 5 through the injection tube 50 and the injection port 51, and is evenly filled into the injection cavity 401 through the narrowing port 42 to form a sealed injection cavity 401. After the injection molded part a is cooled and solidified, the PLC controller 320 controls the cylinder 1 33 to retract and drive the movable mold 30 to separate from the fixed mold 40; the PLC controller 320 controls the cylinder 2 71 to push the ejector rack 7 forward, and the ejector pin 70 array ejects the molded part a synchronously to avoid deformation or damage caused by local force; at the same time, the PLC controller 320 controls the horizontal electric slide 9 and the vertical electric slide 90 to cooperate with the electric suction cup 92 to position it above the finished product, and then absorbs the molded part a and moves it downward to the preset clamping area. 20 controls the clamping block 82 driven by the electric bidirectional screw 80 to adaptively clamp the accessory a. The anti-slip pattern design ensures that the accessory a is firmly clamped. Then the PLC controller 320 controls the horizontal electric slide rail 9 and the vertical electric slide rail 90 to move upward and reset. When the PLC controller 320 controls the cylinder 1 33 again to drive the movable mold 30 and the fixed mold 40 on the movable seat 3 to close the mold, the cutting tool holder 101 will synchronously follow the closing action of the movable mold 30 to achieve synchronous removal of the waste b remaining in the injection channel 41 on the accessory a, thereby improving the cleaning of the residual waste in the accessory a. This improves the efficiency of removing waste material b and also helps reduce the time between processes. After removal, waste material b automatically slides onto the left electric conveyor belt 1102 through the inverted V-shaped guide plate 1101, where it is collected and recycled. When the PLC controller 320 controls the bidirectional screw drive clamping blocks 82 to open, the finished accessory a after the removal of waste material b will automatically fall onto the electric conveyor belt 1102 on the right side of the inverted V-shaped guide plate 1101, where it is transported and delivered. In this way, the fully automated production process of accessory a is completed. This device, through the PLC controller, can perform intelligent automatic injection molding of accessories and automatically remove waste materials in batches, thereby improving the efficiency and quality of accessory injection molding and avoiding the need for manual removal of residual waste materials on the accessories.

[0032] The technical principles of the embodiments of the present invention have been described above in conjunction with specific embodiments. These descriptions are intended solely to explain the principles of the embodiments of the present invention and should not be construed in any way as limiting the scope of protection of the embodiments of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other specific implementations of the embodiments of the present invention without inventive effort, and such implementations will fall within the scope of protection of the embodiments of the present invention.

Claims

1. An injection molding device for automobile parts, comprising a movable seat (3), a movable mold (30), a fixed seat (4), a fixed mold (40) and a feed pipe (5), wherein the movable mold (30) is connected to a support (32) via a cylinder (33), and a fixed mold (40) is provided on the fixed seat (4) and is engaged with the movable mold (30), and the movable mold (30) and the fixed mold (40) are closed to form an injection molding cavity (401), characterized in that: The invention also includes an injection molding structure, a material ejection structure and a material cutter. An injection molding structure for molding the accessory (a) is provided between the mold surfaces of the movable mold (30) and the fixed mold (40). The injection molding structure includes a regulator, an injection molding tube (50) and a protrusion (31). The injection molding tube (50) is rotatably connected to the middle of the fixed mold (40), and the outer end of the injection molding tube (50) is connected to the feed tube (5) through a rotary joint. A regulator for fine-tuning the rotation angle of the injection molding tube (50) is provided in the fixed mold (40). A plurality of injection ports (51) are provided at intervals along the circumferential direction at the inner end of the injection molding tube (50). The fixed mold (40) ) is provided on the molding surface thereof with an injection channel (41) connected to each injection port (51), the molding surface of the movable mold (30) is provided with a protrusion (31) corresponding to the injection channel (41) port seal-matched, the fixed mold (40) is also provided with a ejection structure for ejecting the molding accessory (a), and the bottom of the movable seat (3) is also provided with a cutter for synchronously cutting off the waste material (b) remaining on the accessory (a); the regulator includes an adjusting gear (6) sleeved on the outer periphery of the injection tube (50), a servo motor (60) fixed on the inner side of the fixed seat (4), and a servo motor ( 60) output shaft and driving gear (61) meshing with regulating gear (6), the driving gear (61) and regulating gear (6) are controlled to rotate by servo motor (60) to control the circumferential rotation angle of injection molding tube (50); the ejection structure includes ejection frame (7), ejector pin (70) and cylinder 2 (71), the ejection frame (7) is slidably arranged in the inner cavity of fixed seat (4), ejector pins (70) are spaced apart on the ejection frame (7), the ejector pins (70) slide through the fixed mold (40) and the end thereof is flush with the bottom surface of injection molding cavity (401), and the fixed seat (4) is provided with A second cylinder (71) is used to control the movement, extension and retraction adjustment of the ejector frame (7) and the ejector pin (70); the cutter comprises a connecting seat (10) and a cutting knife holder (101), the connecting seat (10) is arranged at the bottom of the movable seat (3), and the cutting knife holder (101) is arranged on the connecting seat (10); when the movable seat (3) is closed in the direction of the fixed mold (40), the cutting knife holder (101) moves with it and synchronously cuts off the waste material (b) on the clamping fixed accessory (a); the injection channel (41) and the injection cavity (401) are connected at the end with a narrowing opening (42) with a gradually shrinking cross section.

2. The automobile parts injection molding device according to claim 1, characterized in that: The utility model also includes a clamping mechanism, which includes a guide rail (8), an electric bidirectional screw rod (80), a clamping arm (81) and a clamping block (82). The middle part of the platform (1) is provided with a guide rail (8), and the electric bidirectional screw rod (80) is installed in the guide rail (8). The two clamping arms (81) are slidably sleeved in the guide rail (8) and are respectively threaded with the electric bidirectional screw rod (80). The end of the clamping arm (81) is provided with a clamping block (82) with anti-slip grooves for clamping and fixing the accessory (a).

3. The automobile parts injection molding device according to claim 1, characterized in that: The cutting tool holder (101) and the clamping arm (81) are arranged horizontally relative to each other.

4. The automobile parts injection molding device according to claim 1, characterized in that: The automatic diversion assembly further comprises an automatic diversion assembly, which comprises a connecting plate (11), a guide plate (1101) and an electric conveyor belt (1102). The bottom of the stand (1) is provided with a connecting plate (11), the lower side of the connecting plate (11) is connected to the guide plate (1101), and electric conveyor belts (1102) for sorting and conveying finished parts (a) and waste materials (b) are respectively provided between the two sides of the guide plate (1101) and the connecting plate (11).

5. The automobile parts injection molding device according to claim 4, characterized in that: The guide plate (1101) is designed with an inverted V-shaped structure and is used to automatically guide the finished product accessories (a) and the cut waste (b) to the electric conveyor belt (1102).

6. The automobile parts injection molding device according to claim 1, characterized in that: The intelligent material-retrieving manipulator includes a horizontal electric slide rail (9), a vertical electric slide rail (90), a connecting arm (91) and an electric suction cup (92). The horizontal electric slide rail (9) is arranged on the top of the support (32), and the vertical electric slide rail (90) is installed on the slider of the horizontal electric slide rail (90). The slider of the vertical electric slide rail (90) is connected to the electric suction cup (92) for retrieving materials through the connecting arm (91).

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