A double-color molding injection molding machine for automobile accessory production

Abstract

The present application relates to injection molding machine technical field, disclose a kind of double-color forming injection molding machine for automobile parts production, including machine body shell, machine body shell inside is provided with fixed mould, machine body shell inside is also provided with movable mould, two gates are symmetrically distributed and are provided on movable mould, machine body shell inside is also provided with telescopic cylinder, telescopic cylinder output end is fixedly connected with movable mould.The double-color forming injection molding machine for automobile parts production, through the cooperation of adjusting assembly and push assembly, the multi-dimensional accurate positioning of blade can be realized, combined with the firm adsorption of chuck of adsorption assembly to product, can effectively avoid the scratch, size deviation and other problems caused by product deviation in cutting process.At the same time, the magnetic attraction assembly can accurately control the extension and retraction of the blade, which ensures the accuracy of the flash cutting and eliminates the secondary damage caused by the exposed blade.Compared with the randomness of manual cleaning, the standardization of the equipment can reduce the residual rate of flash.

Description

Technical Field

[0001] This invention relates to the field of injection molding machine technology, and in particular to a two-color injection molding machine for the production of automotive parts. Background Technology

[0002] In the wave of transformation in the automotive industry towards lightweighting, intelligentization, and high quality, injection molding machines have become a core basic equipment for automotive parts production. Traditional metal parts, due to their heavy weight and high cost, are gradually being replaced by plastic and composite material parts, while injection molding technology can efficiently achieve mass production and high precision of various automotive parts. However, existing injection molding machines still have the following shortcomings in use:

[0003] When existing injection molding machines process plastic raw materials, the surface of the molded product is prone to flash defects due to various factors. The most critical cause is the gap between the molds during the mold closing stage. Whether it's wear and tear from long-term mold use, precision deviations in the mold closing mechanism, or minute errors during mold assembly, the mold mating surfaces cannot be completely sealed. When molten plastic is injected into the mold cavity under high pressure, it overflows through these tiny gaps, forming excess flash after cooling and solidification. This flash not only severely affects the product's surface smoothness but, for products with high requirements for dimensional accuracy and surface quality, such as automotive interior parts and precision structural components, it can also lead to assembly jamming and performance degradation. To ensure product quality, companies have to add a dedicated manual cleaning process, assigning workers to remove flash by scraping with blades. This subsequent processing step not only increases labor costs and production time, extending the overall production cycle, but may also cause secondary defects such as surface scratches and dimensional deviations due to variations in manual operation, further affecting production efficiency and product consistency. Summary of the Invention

[0004] Given that existing injection molding machines are prone to producing flash due to mold closing gaps, requiring manual cleaning, which increases costs and time, and may also cause secondary defects, affecting efficiency and quality, a two-color injection molding machine for automotive parts production is proposed.

[0005] This application provides a two-color injection molding machine for the production of automotive parts, the purpose of which is to reduce costs and improve efficiency while ensuring consistent product quality by adding a flash removal mechanism to eliminate the manual cleaning process.

[0006] The technical solution of the present invention is: a two-color injection molding machine for the production of automotive parts, including a machine body shell and a flash removal component disposed on the machine body shell;

[0007] The flash removal component includes a flash removal assembly disposed on the top of the outer shell of the machine body, and the flash removal assembly is provided with an adjustment assembly and a pushing assembly;

[0008] The flash removal component is used to remove flash from molded plastic products;

[0009] The flash removal component includes an outer frame mounted on the outer shell of the machine body. Several through holes are arranged in a circular array on the outer frame. Movable blocks are arranged inside the several through holes. Lifting blocks are arranged on the several movable blocks. An outer cylinder is arranged on the lifting blocks. A blade is arranged inside the outer cylinder.

[0010] The adjustment component includes a threaded rod disposed on the movable block, the threaded rod being rotatably connected to the corresponding lifting block, and two smooth rods symmetrically distributed on the movable block, the smooth rods being fixedly connected to the corresponding lifting blocks;

[0011] The pushing component includes a cross rod set on the outer frame, with several strip holes symmetrically distributed on the cross rod. Guide rods are provided inside the strip holes, and the guide rods are fixedly connected to the corresponding moving blocks.

[0012] Furthermore, the flash removal component also includes a magnetic suction component, a cleaning component, a driving component, and an adsorption component disposed on the flash removal assembly, and a support component is disposed on the outer shell of the machine body;

[0013] The magnetic attraction assembly includes an electromagnet disposed inside the outer cylinder, and a first magnet disposed on the blade.

[0014] Furthermore, the cleaning assembly includes an airbag disposed between the moving block and the through hole, two nozzles are symmetrically distributed on the lifting block, the two nozzles are connected by a connecting pipe, the airbag is connected to one of the nozzles by a hose, and an air inlet pipe is provided at the end of the airbag away from the hose.

[0015] Furthermore, the drive assembly includes a drive cylinder mounted on an outer frame, a drive motor mounted on the outer frame, an output shaft of the drive motor fixedly connected to the drive cylinder, and the drive cylinder fixedly connected to the cross rod.

[0016] Furthermore, the adsorption assembly includes a cavity disposed on the outer frame, a plurality of suction cups are arranged in a ring array on the outer frame, the suction cups are connected to the cavity, an outer pipe is disposed on the drive cylinder, and a plurality of through slots are also arranged in a ring array on the drive cylinder.

[0017] Furthermore, the support assembly includes a U-shaped frame mounted on the outer shell of the machine body, with two electric actuators symmetrically distributed on the top of the U-shaped frame, and the output ends of the electric actuators being fixedly connected to the outer frame.

[0018] Furthermore, a fixed mold is provided inside the outer shell of the machine body, and a moving mold is also provided inside the outer shell of the machine body. Two gates are symmetrically distributed on the moving mold. A telescopic cylinder is also provided inside the outer shell of the machine body. The output end of the telescopic cylinder is fixedly connected to the moving mold. Two material cylinders are symmetrically distributed inside the outer shell of the machine body. A conveying auger is provided inside the material cylinder. A hopper is provided at the top of both material cylinders.

[0019] The beneficial effects of this invention are:

[0020] By coordinating the adjustment and pushing components, multi-dimensional precise positioning of the blade can be achieved. Combined with the suction cup of the adsorption component for stable adsorption of the product, problems such as scratches and dimensional deviations caused by product displacement during the cutting process can be effectively avoided. At the same time, the magnetic adsorption component can precisely control the extension and retraction of the blade, ensuring the accuracy of flash trimming and eliminating secondary damage caused by exposed blades. Compared with the randomness of manual cleaning, the standardized cutting of this equipment can reduce the flash residue rate, significantly improve the surface flatness and dimensional consistency of automotive parts, and improve the overall product yield, meeting the stringent quality requirements of the automotive industry for precision parts.

[0021] By cleaning the airbags and nozzles of the components, cutting debris can be removed simultaneously, avoiding rework caused by debris residue. In addition, the dual-color simultaneous molding process integrates the traditional two-injection process into a single molding process. Combined with automated flash removal, overall production efficiency is improved, helping automakers shorten delivery cycles and build a low-cost, high-efficiency parts supply chain.

[0022] The blade height is adjusted via the threaded rod and the guide rod. The pusher assembly drives the blade to move laterally. Combined with the position adjustment of the U-shaped frame and electric push rod of the support assembly, it can accommodate the removal of burrs from automotive parts of different sizes without the need to change special molds or cutters, thus expanding the equipment's adaptability. Simultaneously, the magnetic suction assembly automatically retracts the blade into the outer cylinder after cutting, preventing the blade from protruding and scratching operators or finished products. The stable support of the suction assembly also reduces the risk of products falling and damaging the equipment, significantly improving operational safety during production and reducing the accident rate. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention with the outer shell removed;

[0025] Figure 3 This is a schematic diagram of the burr removal component structure of the present invention;

[0026] Figure 4 This is a partial structural diagram of the burr removal component of the present invention;

[0027] Figure 5 This is a schematic diagram of the burr removal component structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the pushing component structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the magnetic suction component structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the cleaning component structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the adsorption component structure of the present invention.

[0032] In the picture:

[0033] 1. Machine body shell; 11. Fixed mold; 12. Moving mold; 13. Telescopic cylinder; 14. Material cylinder; 15. Hopper; 2. Flash removal assembly; 21. Outer frame; 22. Through hole; 23. Moving block; 24. Lifting block; 25. Outer cylinder; 26. Blade; 3. Adjustment assembly; 31. Threaded rod; 32. Smooth rod; 4. Pushing assembly; 41. Cross rod; 42. Strip hole; 43. Guide rod; 5. Magnetic suction assembly; 51. Electromagnet; 52. First magnet; 6. Cleaning assembly; 61. Airbag; 62. Nozzle; 63. Connecting pipe; 64. Hose; 65. Air inlet pipe; 7. Drive assembly; 71. Drive cylinder; 72. Drive motor; 8. Adsorption assembly; 81. Cavity; 82. Suction cup; 83. Outer pipe; 84. Through groove; 9. Support assembly; 91. U-shaped frame; 92. Electric push rod. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Example 1, referring to Figures 1-6This invention provides a first embodiment of a two-color injection molding machine for automotive parts production, comprising a machine body shell 1, a fixed mold 11 fixedly connected to the inner side of the machine body shell 1, a movable mold 12 slidably connected to the inner side of the machine body shell 1, two gates symmetrically distributed on the movable mold 12, a telescopic cylinder 13 fixedly connected to the inner side of the machine body shell 1, the output end of the telescopic cylinder 13 fixedly connected to the movable mold 12, two material cylinders 14 symmetrically distributed and slidably connected to the inner side of the machine body shell 1, a conveying auger movably connected to the inner side of the material cylinders 14, and hoppers 15 fixedly connected to the top of each of the two material cylinders 14, and also including components installed on the machine body shell. The flash removal component 1 includes a flash removal assembly 2 mounted on the top of the outer casing 1. The flash removal assembly 2 is equipped with an adjustment assembly 3 and a pushing assembly 4. The flash removal component is used to remove flash from molded plastic products. The flash removal assembly 2 includes an outer frame 21 slidably connected to the outer casing 1. The outer frame 21 has several through holes 22 arranged in a circular array. The inner sides of the several through holes 22 are all limited and slidably connected to moving blocks 23. The several moving blocks 23 are all slidably connected to lifting blocks 24. The lifting blocks 24 are fixedly connected to an outer cylinder 25. The inner side of the outer cylinder 25 is slidably connected to a blade 26.

[0036] Specifically, during the injection molding stage, two raw materials enter the symmetrical barrel 14 through the hopper 15. The conveying auger inside the barrel 14 pushes the raw materials to the front end for heating and melting. Then, they are injected synchronously or in stages into the cavity formed by the closure of the fixed mold 11 and the moving mold 12 through two symmetrical gates on the moving mold 12. The telescopic cylinder 13 drives the moving mold 12 to move precisely to close the mold, ensuring cavity sealing and molding accuracy. After molding, the telescopic cylinder 13 drives the moving mold 12 to reset and open the mold. The flash removal component is activated, and the outer frame 21 slides along the outer shell 1 of the machine body, so that the flash removal component 2 is precisely aligned with the molded product. The adjusting component 3 adjusts the lifting block 24 to move up and down according to the product size and flash distribution, adjusting the height of the outer cylinder 25 and the inner blade 26 to achieve precise positioning of the blade 26 for the flash position. After positioning, the blade 26 inside the outer cylinder 25 extends, and the blades 26 distributed in a ring array work synchronously to cut and remove the flash from the product edge. During the removal process, the coordinated sliding of each moving block 23 and the lifting block 24 ensures uniform cutting. After the flash removal is completed, the blade 26 retracts into the outer cylinder 25 to prevent the blade 26 from extending and causing scratches to workers or products. The pushing component 4 drives the flash removal component 2 to reset, completing a full work cycle of two-color molding and flash removal. The integrated flash removal design eliminates the manual cleaning process, significantly reducing labor costs and production time; the telescopic cylinder 13 precisely drives the mold closing, which, together with the precise cutting of the flash removal component 2, reduces flash and secondary defects, ensuring consistent product quality; and the simultaneous two-color molding improves production efficiency, helping automakers build efficient and low-cost automotive parts production processes.

[0037] Reference Figure 4 and Figure 5 The adjustment component 3 includes a threaded rod 31 threadedly connected to the moving block 23. The threaded rod 31 is rotatably connected to the corresponding lifting block 24. Two smooth rods 32 are also symmetrically distributed and slidably connected on the moving block 23. The smooth rods 32 are fixedly connected to the corresponding lifting blocks 24.

[0038] Specifically, rotating the threaded rod 31 causes it to move on the moving block 23 due to its threaded connection with the moving block 23. Under the action of the smooth rod 32, the lifting block 24 moves on the moving block 23. Through the outer cylinder 25, the position of the blade 26 is adjusted so that the blade 26 can accurately align with the flash on the product surface, thus adapting to the flash removal of molded plastic products of different sizes.

[0039] Reference Figure 4 and Figure 6 The pushing component 4 includes a cross rod 41 rotatably connected to the outer frame 21. Several strip holes 42 are symmetrically distributed on the cross rod 41. Guide rods 43 are slidably connected to the inner side of each strip hole 42. The guide rods 43 are fixedly connected to the corresponding moving blocks 23.

[0040] Specifically, the cross bar 41 rotates on the outer frame 21, causing the guide bar 43 to slide inside the strip hole 42. Under the action of the strip hole 42, the guide bar 43 moves along the edge of the outer frame 21, causing the moving block 23 to slide precisely inside the through hole 22, which in turn causes the blade 26 to move laterally along the position of the flash, thus quickly and accurately cutting the flash.

[0041] Example 2, refer to Figures 7-9 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the burr removal component further includes a magnetic suction component 5, a cleaning component 6, a driving component 7 and an adsorption component 8 installed on the burr removal component 2, and a support component 9 is installed on the outer shell 1. The magnetic suction component 5 includes an electromagnet 51 fixedly connected to the inner side of the outer cylinder 25, and a first magnet 52 fixedly connected to the blade 26.

[0042] Specifically, a controller is installed on the outer casing 1 of the machine body. The controller is electrically connected to the electromagnet 51. When the flash is removed, the controller controls the electromagnet 51 to be energized, so that the electromagnet 51 and the first magnet 52 repel each other, causing the blade 26 to move outward from the outer cylinder 25 to remove the flash. After the flash is removed, the controller controls the electromagnet 51 to be energized, so that the electromagnet 51 and the first magnet 52 attract each other, causing the blade 26 to move inward from the outer cylinder 25 to retract, so as to avoid the blade 26 extending outward and causing scratches to the product and the staff.

[0043] Reference Figure 8The cleaning component 6 includes an airbag 61 fixedly connected between the movable block 23 and the through hole 22. Two nozzles 62 are symmetrically distributed and fixedly connected on the lifting block 24. The two nozzles 62 are connected to each other through a connecting pipe 63. The airbag 61 is connected to one of the nozzles 62 through a hose 64. An air inlet pipe 65 is fixedly connected to the end of the airbag 61 away from the hose 64.

[0044] Specifically, both the hose 64 and the air inlet pipe 65 are equipped with one-way valves. When the moving block 23 moves inside the through hole 22, it squeezes the airbag 61. Under the action of the one-way valve, the gas inside the airbag 61 is discharged from the hose 64 and enters the nozzle 62 to blow and clean the burrs cut off by the blade 26, preventing burrs and debris from sticking to the molded product and requiring manual cleaning later, which would increase production costs. When the moving block 23 slides in the opposite direction inside the through hole 22, it stretches the airbag 61. Under the action of the one-way valve, external gas enters the airbag 61 from the air inlet pipe 65.

[0045] Reference Figure 9 The drive assembly 7 includes a drive cylinder 71 rotatably connected to the outer frame 21, and a drive motor 72 is fixedly connected to the outer frame 21. The output shaft of the drive motor 72 is fixedly connected to the drive cylinder 71, and the drive cylinder 71 is fixedly connected to the cross rod 41.

[0046] Specifically, the drive motor 72 is started to rotate forward, causing the drive cylinder 71 to rotate at a certain angle, which in turn causes the cross rod 41 to rotate at a certain angle. Under the action of the pushing component 4, one end of the blade 26 on the outer frame 21 moves to the other end to cut the burrs. Then, the drive motor 72 is started to rotate in the reverse direction, causing the drive cylinder 71 to rotate in the reverse direction at a certain angle, which in turn causes the cross rod 41 to rotate in the reverse direction at a certain angle. Under the action of the pushing component 4, the blade 26 moves and resets. The rest of the structure is the same as that in Embodiment 1.

[0047] Example 3, referring to Figure 9 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the adsorption component 8 includes a cavity 81 opened on the outer frame 21. A plurality of suction cups 82 are fixedly connected to the outer frame 21 in a ring array. The suction cups 82 are connected to the cavity 81. An outer pipe 83 is rotatably connected to the drive cylinder 71. A plurality of through slots 84 are also opened on the drive cylinder 71 in a ring array.

[0048] Specifically, the air inlet of the external air pump is connected to the external pipe 83, and the air pump is started, so that the gas in the cavity 81 enters the external pipe 83 through the through groove 84 to evacuate the cavity 81, so that the suction cup 82 has suction force to adsorb the formed product, ensuring that the product remains stable and does not move when the flash is removed, and avoiding the blade 26 from scratching the product.

[0049] Reference Figure 2 and Figure 3 The support component 9 includes a U-shaped frame 91 that is slidably connected to the outer shell 1. Two electric actuators 92 are symmetrically distributed and fixedly connected to the top of the U-shaped frame 91. The output end of the electric actuators 92 is fixedly connected to the outer frame 21.

[0050] Specifically, the U-shaped frame 91 slides on the outer shell 1, causing the outer frame 21 to move laterally. This activates the electric push rod 92, moving the outer frame 21 toward the formed product, ensuring that the outer frame 21 is aligned with the formed product. The remaining structure is the same as in Embodiment 2.

[0051] Based on embodiments 1-3, the working principle of the present invention is as follows: In the injection molding stage, two raw materials enter the symmetrically arranged barrel 14 through the hopper 15. The conveying auger in the barrel 14 pushes the raw materials to the front end for heating and melting. The molten raw materials are injected into the cavity simultaneously or in stages through two symmetrical gates on the moving mold 12. The telescopic cylinder 13 drives the moving mold 12 to move precisely and close with the fixed mold 11, ensuring cavity sealing and molding accuracy. After molding, the telescopic cylinder 13 drives the moving mold 12 to reset and open. After the flash removal stage is started, the support component 9 first drives the flash removal component 2 to align. The U-shaped frame 91 slides along the outer shell 1 to realize the lateral movement of the outer frame 21. The electric push rod 92 drives the outer frame 21 to approach and precisely align with the molded product. The adsorption component 8 works synchronously. The external air pump extracts the gas in the cavity 81 of the outer frame 21 through the external pipe 83 and the through groove 84, so that the suction cups 82 distributed in a ring array generate suction to adsorb the product, ensuring cutting stability. Subsequently, the adjusting component 3 and the pushing component 4 work together to position the blade 26. Rotating the threaded rod 31, guided by the guide rod 32, moves the lifting block 24, adjusting the height of the blade 26. The drive motor 72 drives the drive cylinder 71 and the cross rod 41 to rotate, causing the guide rod 43 to slide along the strip hole 42 of the cross rod 41, driving the moving block 23 to slide along the through hole 22 of the outer frame 21, achieving precise lateral alignment of the blade 26 with the flash. During cutting, the controller controls the electromagnet 51 in the magnetic attraction component 5 to be energized, repelling the first magnet 52 on the blade 26, pushing the blade 26 out of the outer cylinder 25. The circular array of blades 26 simultaneously cuts the flash of the product. As the moving block 23 slides, it squeezes the airbag 61, and gas is ejected through the nozzle 62 to clean up the flash debris. After the cutting is completed, the electromagnet 51 is energized in reverse and attracts the first magnet 52, and the blade 26 retracts into the outer cylinder 25; the drive motor 72 reverses to drive the blade 26 to reset, the push assembly 4 drives the flash removal assembly 2 to reset, and the suction cup 82 stops adsorbing, completing a complete two-color molding and flash removal cycle.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A two-color injection molding machine for the production of automotive parts, comprising a machine body shell (1), characterized in that: It also includes a burr removal component installed on the outer shell (1); The burr removal component includes a burr removal assembly (2) disposed on the top of the outer shell (1), and the burr removal assembly (2) is provided with an adjustment assembly (3) and a pushing assembly (4). The flash removal component is used to remove flash from molded plastic products; The burr removal component (2) includes an outer frame (21) disposed on the outer shell (1). A plurality of through holes (22) are arranged in a circular array on the outer frame (21). A movable block (23) is disposed inside each of the plurality of through holes (22). A lifting block (24) is disposed on each of the plurality of movable blocks (23). An outer cylinder (25) is disposed on the lifting block (24). A blade (26) is disposed inside the outer cylinder (25). The adjustment component (3) includes a threaded rod (31) set on the moving block (23), the threaded rod (31) being rotatably connected to the corresponding lifting block (24), and two smooth rods (32) symmetrically distributed on the moving block (23), the smooth rods (32) being fixedly connected to the corresponding lifting block (24); The pushing component (4) includes a cross rod (41) set on the outer frame (21), and a number of strip holes (42) are symmetrically distributed on the cross rod (41). A guide rod (43) is provided inside each of the strip holes (42), and the guide rod (43) is fixedly connected to the corresponding moving block (23). The burr removal component also includes a magnetic suction component (5), a cleaning component (6), a driving component (7) and an adsorption component (8) disposed on the burr removal component (2), and a support component (9) disposed on the outer shell (1). The magnetic attraction assembly (5) includes an electromagnet (51) disposed inside the outer cylinder (25) and a first magnet (52) disposed on the blade (26). The drive assembly (7) includes a drive cylinder (71) disposed on the outer frame (21), and a drive motor (72) is also disposed on the outer frame (21). The output shaft of the drive motor (72) is fixedly connected to the drive cylinder (71), and the drive cylinder (71) is fixedly connected to the cross rod (41). The adsorption assembly (8) includes a cavity (81) disposed on the outer frame (21), and a number of suction cups (82) are arranged in a ring array on the outer frame (21). The suction cups (82) are connected to the cavity (81). An outer pipe (83) is disposed on the drive cylinder (71), and a number of through slots (84) are also arranged in a ring array on the drive cylinder (71).

2. The two-color injection molding machine for automotive parts production according to claim 1, characterized in that: The cleaning component (6) includes an airbag (61) disposed between the moving block (23) and the through hole (22). Two nozzles (62) are symmetrically distributed on the lifting block (24). The two nozzles (62) are connected by a connecting pipe (63). The airbag (61) is connected to one of the nozzles (62) by a hose (64). An air inlet pipe (65) is provided at the end of the airbag (61) away from the hose (64).

3. The two-color injection molding machine for automotive parts production according to claim 1, characterized in that: The support assembly (9) includes a U-shaped frame (91) set on the outer shell (1) of the machine body. Two electric push rods (92) are symmetrically distributed on the top of the U-shaped frame (91). The output end of the electric push rod (92) is fixedly connected to the outer frame (21).

4. The two-color injection molding machine for automotive parts production according to claim 1, characterized in that: The inner side of the outer shell (1) of the machine body is provided with a fixed mold (11) and a moving mold (12). The moving mold (12) has two gates symmetrically distributed on it. The inner side of the outer shell (1) is also provided with a telescopic cylinder (13). The output end of the telescopic cylinder (13) is fixedly connected to the moving mold (12). The inner side of the outer shell (1) of the machine body is provided with two material cylinders (14) symmetrically distributed. The inner side of the material cylinders (14) is provided with a conveying auger. The top of the two material cylinders (14) is provided with a hopper (15).

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