An injection molding device and an injection molding method for an automotive injection molded gear

Abstract

The present invention provides an injection molding device and an injection molding method for automotive injection molded gears, which relates to the field of automotive gear production. It includes a base, and an unloading mechanism is arranged above the base. Above the unloading mechanism, there are multiple cooling and forming mechanisms for cooling the gears, and the multiple cooling and forming mechanisms are arranged at equal intervals. One side of the cooling and forming mechanism is provided with a driving mechanism for placing the gears cooled on the cooling and forming mechanism onto the unloading mechanism. The driving mechanism includes side plates, a motor, and a turntable. The side plates are fixedly connected to the base, the turntable is rotatably connected to the side plates, and a motor for driving the turntable to rotate is installed on the side plates. For this injection molding device for automotive injection molded gears, through the setting of the driving mechanism, only by controlling the turntable to rotate one week by the motor, all the gears on the cooling and forming mechanism can fall into the unloading mechanism, so that the unloading can be carried out quickly and the efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive gear production, and particularly to an injection molding device and an injection molding method for automotive injection-molded gears. Background Art

[0002] The windshield wiper is a common component on an automobile. The internal gear of the windshield wiper is generally injection-molded. The injection molding device for the windshield wiper gear is a device that transports and clamps a shaft into an injection molding machine for injection molding to obtain the windshield wiper gear.

[0003] When the windshield wiper gear is produced, since the material needs to be melted into a liquid in the injection molding machine for injection molding, the temperature of the injection-molded windshield wiper gear is relatively high, and the connection with the shaft is also unstable.

[0004] According to a windshield wiper gear injection molding device provided by Chinese Patent No. CN201710661925.4, the document includes an injection molding machine and a discharging device for transporting the windshield wiper gear. It further includes a placement box for placing the shaft, a workbench for installing the placement box, a clamping device provided on the injection molding machine for clamping the shaft into the injection molding machine for injection molding and taking out the windshield wiper gear, a waste bucket for collecting injection molding waste, a waste clamp for taking out injection molding waste provided on the clamping device, a transport device for transporting the shaft provided on the workbench, a cylinder for taking out the shaft from the placement box provided on the workbench, a cooling table for placing the windshield wiper gear provided on the workbench, a plurality of cooling stations for placing the windshield wiper gear provided on the cooling table, and a main control terminal connected to and controlling the injection molding machine, the clamping device, the waste clamp, the transport device, the discharging device, and the cylinder.

[0005] However, for the windshield wiper gear injection molding device proposed in this document, the gears that are cooled on the cooling table need to be clamped one by one by the clamping device onto the discharging device, and the discharging efficiency is relatively low, and it is not convenient to use. Summary of the Invention

[0006] (1) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides an injection molding device and an injection molding method for automotive injection-molded gears, and solves the problems raised in the above background art.

[0008] (2) Technical Solutions

[0009] To achieve the above object, the present invention is realized by the following technical solutions: An injection molding device for an automotive injection molded gear, including a base, an unloading mechanism is arranged above the base, a plurality of cooling and forming mechanisms for cooling the gear are arranged above the unloading mechanism, and the plurality of cooling and forming mechanisms are arranged at equal intervals. A driving mechanism for placing the cooled gear on the cooling and forming mechanism onto the unloading mechanism is arranged on one side of the cooling and forming mechanism. The driving mechanism includes side plates, a motor, and a turntable. The side plates are fixedly connected to the base. A turntable is rotatably connected to the side plates. A motor for driving the turntable to rotate is installed on the side plates. The cooling and forming mechanism is arranged on the turntable. When the turntable rotates one week, the gear on the cooling and forming mechanism falls into the unloading mechanism.

[0010] Preferably, the number of the cooling and forming mechanisms is the same as the number of the driving mechanisms, and the cooling and forming mechanisms and the driving mechanisms are in one-to-one correspondence.

[0011] Preferably, the cooling and forming mechanism includes a cooling table and a placement sleeve. The cooling table is fixedly connected to the turntable. A plurality of placement sleeves are fixedly connected to the cooling table. The placement sleeves are matched with the gears, and the placement sleeves can be used to place the just-injected gears.

[0012] Preferably, the number of the placement sleeves is set to be multiple, and the multiple placement sleeves are arranged at equal intervals.

[0013] Preferably, a limit through hole matching the shaft of the gear is opened at the center of the placement sleeve, so that when placing the gear, the shaft of the gear can be inserted into the limit through hole.

[0014] Preferably, it further includes a discharging assembly for automatic discharging. The discharging assembly includes a hollow column, a laser emitter, a laser receiver, a single-chip microcomputer, a lifting frame, a spring, and a shielding cloth. The hollow column is arranged below the cooling table, and one end of the hollow column is fixedly connected to the turntable. The number of the lifting frames is the same as that of the placing sleeves. The shielding cloth is arranged on the lifting frame, and a light-transmitting hole is formed in the shielding cloth. The lifting frame is movably matched with the hollow column in the up-and-down direction. The lifting frames correspond to the placing sleeves one by one, and the top of each lifting frame is attached to the bottom of the limit through-hole of its corresponding placing sleeve. One end of the spring is fixedly connected to the top of the lifting frame, and the other end of the spring is fixedly connected to the hollow column. The laser emitter and the laser receiver are respectively fixedly connected to both ends of the inner cavity of the hollow column, and the laser emitter and the laser receiver correspond to each other. The single-chip microcomputer is installed on the base, and the single-chip microcomputer is electrically connected to the laser receiver and the motor respectively. When the gear is placed on the placing sleeve for cooling, under the action of gravity, the shaft of the gear pushes the lifting frame downward through the limit through-hole, so that the light-transmitting hole descends to the laser emission path of the laser emitter. When all the placing sleeves are placed with gears, all the light-transmitting holes are located on the laser emission path of the laser emitter. At this time, the laser emitted by the laser emitter will pass through all the light-transmitting holes and irradiate on the laser receiver. After the laser receiver receives the laser, it sends a signal to the single-chip microcomputer. When the single-chip microcomputer continuously receives this signal for n minutes, where n minutes is greater than the minimum time required for cooling a single gear, the single-chip microcomputer controls the motor to rotate the turntable one week. After the turntable rotates one week, all the gears on the placing sleeve fall into the discharging mechanism. At this time, without the gravity of the gears, under the action of the spring, the lifting frame resets, so that the light-transmitting hole on the shielding cloth deviates from the laser emission path of the laser emitter, and the shielding cloth blocks the laser of the laser emitter.

[0015] Preferably, a first rotating shaft is rotatably connected to the top of the lifting frame, and a second rotating shaft is rotatably connected to the bottom of the lifting frame. Both ends of the shielding cloth are respectively fixedly connected to the first rotating shaft and the second rotating shaft, and a knob is fixedly connected to one end of each of the first rotating shaft and the second rotating shaft. The initial position of the light-transmitting hole can be adjusted by rotating the first rotating shaft and the second rotating shaft.

[0016] An injection molding method for an automotive injection molded gear includes the following steps:

[0017] Step 1: The clamping device clamps the shaft into the injection molding machine. When there is a wiper gear in the injection molding machine, after the clamping device takes out the wiper gear, the shaft is placed in the injection molding machine for injection molding.

[0018] Step 2: The clamping device clamps the wiper gear to the first cooling and forming mechanism until the first cooling and forming mechanism is full of wiper gears. After it is full, the wiper gears are placed on the second cooling and forming mechanism until the last cooling and forming mechanism is full.

[0019] Step 3: After all the gears on the cooling and forming mechanism are cooled, the driving mechanism places the gears that have been cooled on the cooling and forming mechanism onto the discharging mechanism;

[0020] Step 4: Repeat Steps 1 to 3.

[0021] (III) Beneficial effects

[0022] The present invention provides an injection molding device and an injection molding method for automotive injection molded gears. The following beneficial effects are achieved:

[0023] 1. For the injection molding device of the automotive injection molded gear, through the setting of the driving mechanism, only by controlling the turntable to rotate one week by the motor, all the gears on the cooling and forming mechanism can fall into the discharging mechanism, so that the discharging can be carried out quickly, and the efficiency is greatly improved.

[0024] 2. For the injection molding device of the automotive injection molded gear, through the setting of the unloading assembly, when the gear is placed on the placement sleeve for cooling, under the action of gravity, the shaft of the gear pushes the lifting frame downward through the limiting through hole, so that the light transmitting hole descends to the laser emission path of the laser emitter. When all the placement sleeves are placed with gears, all the light transmitting holes are located on the laser emission path of the laser emitter. At this time, the laser emitted by the laser emitter will pass through all the light transmitting holes and irradiate on the laser receiver. After the laser receiver receives the laser, it sends a signal to the single-chip microcomputer. When the single-chip microcomputer continuously receives this signal for n minutes, and n minutes is greater than the minimum time required for cooling a single gear, the single-chip microcomputer controls the motor to make the turntable rotate one week. After the turntable rotates one week, all the gears on the placement sleeve fall into the discharging mechanism. At this time, the gravity of the gear is lost, and under the action of the spring, the lifting frame resets, so that the light transmitting hole on the shielding cloth deviates from the laser emission path of the laser emitter, and the shielding cloth blocks the laser of the laser emitter, which is convenient for the next cooling. Therefore, after all the gears on a single cooling and forming mechanism are cooled, the unloading can be automatically carried out, the efficiency is further improved, and the use effect is good.

[0025] 3. For the injection molding device of the automotive injection molded gear, when the length of the shaft of the produced gear changes, it will cause the unloading assembly to fail to work properly. Therefore, through the setting of the first rotating shaft, the second rotating shaft and the shielding cloth, the initial position of the light transmitting hole can be adjusted by rotating the first rotating shaft and the second rotating shaft. Thus, when gears with different shaft lengths need to be produced, the unloading assembly can work properly by adjusting the initial position of the light transmitting hole. Description of the drawings

[0026] Figure 1 Structural schematic of the present invention Figure 1 ;

[0027] Figure 2 Structural schematic of the present invention Figure 2 ;

[0028] Figure 3 Structural schematic diagram of the cooling and forming mechanism of the present invention;

[0029] Figure 4 Structural sectional view of the cooling and forming mechanism of the present invention;

[0030] Figure 5 Front view of the structure of the cooling and forming mechanism of the present invention;

[0031] Figure 6 Structural schematic diagram of the lifting frame of the present invention.

[0032] In the figure: 1 base, 2 side plates, 3 single-chip microcomputer, 4 motor, 5 discharging mechanism, 6 cooling and forming mechanism, 7 turntable, 8 cooling table, 9 limiting through holes, 10 placing sleeves, 11 hollow columns, 12 lifting frame, 13 shielding cloth, 14 light-transmitting holes, 15 springs, 16 first rotating shaft, 17 second rotating shaft, 18 laser receiver, 19 laser emitter. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] The embodiments of the present invention provide an injection molding device for automotive injection molded gears, as Figures 1-6 shown, including a base 1, a discharging mechanism 5 is arranged above the base 1, a plurality of cooling and forming mechanisms 6 for cooling gears are arranged above the discharging mechanism 5, and the plurality of cooling and forming mechanisms 6 are arranged at equal intervals. A driving mechanism for placing the gears cooled on the cooling and forming mechanism 6 onto the discharging mechanism 5 is arranged on one side of the cooling and forming mechanism 6. The driving mechanism includes a side plate 2, a motor 4, and a turntable 7. The side plate 2 is fixedly connected to the base 1, the turntable 7 is rotatably connected to the side plate 2, and a motor 4 for driving the turntable 7 to rotate is installed on the side plate 2. The cooling and forming mechanism 6 is arranged on the turntable 7. When the turntable 7 rotates one week, the gears on the cooling and forming mechanism 6 fall into the discharging mechanism 5.

[0035] Through the setting of the driving mechanism, only by controlling the turntable 7 to rotate one week through the motor 4, the gears on the cooling and forming mechanism 6 can all fall into the discharging mechanism 5, so that the discharging can be carried out quickly and the efficiency is greatly improved.

[0036] The number of the cooling and forming mechanisms 6 is the same as that of the driving mechanisms, and the cooling and forming mechanisms 6 and the driving mechanisms are in one-to-one correspondence.

[0037] The cooling and forming mechanism 6 includes a cooling table 8 and a placement sleeve 10. The cooling table 8 is fixedly connected to the turntable 7. A plurality of placement sleeves 10 are fixedly connected to the cooling table 8. The placement sleeves 10 are matched with the gears, and the placement sleeves 10 can be used to place the gears just injection-molded.

[0038] The number of the placement sleeves 10 is set to be multiple, and the multiple placement sleeves 10 are arranged at equal intervals.

[0039] A limiting through hole 9 matching the shaft of the gear is opened at the center of the placement sleeve 10, so that when placing the gear, the shaft of the gear can be inserted into the limiting through hole 9.

[0040] It also includes a discharging component for automatic discharging. The discharging component includes a hollow column 11, a laser emitter 19, a laser receiver 18, a single-chip microcomputer 3, a lifting frame 12, a spring 15, and a shielding cloth 13. The hollow column 11 is arranged below the cooling table 8. One end of the hollow column 11 is fixedly connected to the turntable 7. The number of the lifting frames 12 is the same as that of the placement sleeves 10. A shielding cloth 13 is arranged on the lifting frame 12. A light-transmitting hole 14 is opened on the shielding cloth 13. The lifting frame 12 is movably matched with the hollow column 11 up and down. The lifting frames 12 correspond to the placement sleeves 10 one by one, and the top of each lifting frame 12 is attached to the bottom of the limiting through hole 9 of its corresponding placement sleeve 10. One end of the spring 15 is fixedly connected to the top of the lifting frame 12, and the other end of the spring 15 is fixedly connected to the hollow column 11. A laser emitter 19 and a laser receiver 18 are respectively fixedly connected to both ends of the inner cavity of the hollow column 11, and the laser emitter 19 and the laser receiver 18 correspond to each other. The single-chip microcomputer 3 is installed on the base 1, and the single-chip microcomputer 3 is electrically connected to the laser receiver 18 and the motor 4 respectively. When placing the gear on the placement sleeve 10 for cooling, under the action of gravity, the shaft of the gear pushes the lifting frame 12 downward through the limiting through hole 9, so that the light-transmitting hole 14 descends to the laser emission path of the laser emitter 19. When all the placement sleeves 10 are placed with gears, all the light-transmitting holes 14 are located on the laser emission path of the laser emitter 19. At this time, the laser emitted by the laser emitter 19 will pass through all the light-transmitting holes 14 and irradiate on the laser receiver 18. The laser receiver 18 sends a signal to the single-chip microcomputer 3 after receiving the laser. When the single-chip microcomputer 3 continuously receives this signal for n minutes, n minutes is greater than the minimum time required for cooling a single gear, the single-chip microcomputer 3 controls the motor 4 to make the turntable 7 rotate one week. After the turntable 7 rotates one week, all the gears on the placement sleeves 10 fall into the discharging mechanism 5. At this time, without the gravity of the gears, under the action of the spring 15, the lifting frame 12 resets, so that the light-transmitting hole 14 on the shielding cloth 13 deviates from the laser emission path of the laser emitter 19, so that the shielding cloth 13 blocks the laser of the laser emitter 19.

[0041] Through the setting of the unloading component, when the gear is placed on the placing sleeve 10 for cooling, under the action of gravity, the shaft of the gear pushes the lifting frame 12 downward through the limit through-hole 9, so that the light-transmitting hole 14 descends to the laser emission path of the laser emitter 19. When all the placing sleeves 10 are placed with gears, all the light-transmitting holes 14 are located on the laser emission path of the laser emitter 19. At this time, the laser emitted by the laser emitter 19 will pass through all the light-transmitting holes 14 and irradiate on the laser receiver 18. After receiving the laser, the laser receiver 18 sends a signal to the single-chip microcomputer 3. When the single-chip microcomputer 3 continuously receives this signal for n minutes, and n minutes is greater than the minimum time required for cooling a single gear, the single-chip microcomputer 3 controls the motor 4 to make the turntable 7 rotate one week. After the turntable 7 rotates one week, all the gears on the placing sleeve 10 fall into the discharging mechanism 5. At this time, without the gravity of the gears, under the action of the spring 15, the lifting frame 12 resets, so that the light-transmitting hole 14 on the shielding cloth 13 deviates from the laser emission path of the laser emitter 19, and the shielding cloth 13 shields the laser of the laser emitter 19, which is convenient for the next cooling. Thus, it can automatically unload the materials after all the gears on a single cooling and forming mechanism 6 are cooled, further improving the efficiency and having a good use effect.

[0042] A first rotating shaft 16 is rotatably connected to the top of the lifting frame 12, and a second rotating shaft 17 is rotatably connected to the bottom of the lifting frame 12. Both ends of the shielding cloth 13 are fixedly connected to the first rotating shaft 16 and the second rotating shaft 17 respectively, and a knob is fixedly connected to one end of each of the first rotating shaft 16 and the second rotating shaft 17. The initial position of the light-transmitting hole 14 can be adjusted by rotating the first rotating shaft 16 and the second rotating shaft 17.

[0043] When the length of the shaft of the produced gear changes, it will cause the unloading component to malfunction. Therefore, through the settings of the first rotating shaft 16, the second rotating shaft 17 and the shielding cloth 13, the initial position of the light-transmitting hole 14 can be adjusted by rotating the first rotating shaft 16 and the second rotating shaft 17. Thus, when gears with different shaft lengths need to be produced, the unloading component can work properly by adjusting the initial position of the light-transmitting hole 14.

[0044] An injection molding method for automotive injection-molded gears includes the following steps:

[0045] Step 1: The clamping device clamps the shaft into the injection molding machine. When there is a wiper gear in the injection molding machine, after the clamping device takes out the wiper gear, the shaft is placed in the injection molding machine for injection molding.

[0046] Step 2: The clamping device clamps the wiper gear onto the first cooling and forming mechanism 6 until the first cooling and forming mechanism 6 is full of wiper gears. After it is full, the wiper gears are placed on the second cooling and forming mechanism 6 until the last cooling and forming mechanism 6 is full.

[0047] Step 3: After all the gears on the cooling and forming mechanism 6 are cooled, the driving mechanism places the gears that have been cooled on the cooling and forming mechanism 6 onto the discharging mechanism 5;

[0048] Step 4: Repeat Steps 1 to 3.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for an automotive injection molded gear, comprising a base (1), characterized in that: Above the base (1), a discharging mechanism (5) is provided. Above the discharging mechanism (5), a plurality of cooling and forming mechanisms (6) for cooling gears are provided, and the plurality of cooling and forming mechanisms (6) are arranged at equal intervals. On one side of the cooling and forming mechanism (6), a driving mechanism is provided for placing the gears cooled on the cooling and forming mechanism (6) onto the discharging mechanism (5). The driving mechanism includes side plates (2), a motor (4), and a turntable (7). The side plates (2) are fixedly connected to the base (1). A turntable (7) is rotatably connected to the side plates (2). A motor (4) for driving the rotation of the turntable (7) is installed on the side plates (2). The cooling and forming mechanism (6) is arranged on the turntable (7). When the turntable (7) rotates one week, the gears on the cooling and forming mechanism (6) fall into the discharging mechanism (5). The number of the cooling and forming mechanisms (6) is the same as that of the driving mechanisms, and the cooling and forming mechanisms (6) and the driving mechanisms are in one-to-one correspondence; The cooling and forming mechanism (6) includes a cooling table (8) and a placement sleeve (10). The cooling table (8) is fixedly connected to the turntable (7). A plurality of placement sleeves (10) are fixedly connected to the cooling table (8). The placement sleeves (10) are matched with the gears, and the placement sleeves (10) can be used for placing the gears just injection-molded; The number of the placement sleeves (10) is set to be a plurality, and the plurality of placement sleeves (10) are arranged at equal intervals; A limit through hole (9) matching the shaft of the gear is opened at the center of the placement sleeve (10), so that when placing the gear, the shaft of the gear can be inserted into the limit through hole (9); It further includes a discharging assembly for automatic discharging. The discharging assembly includes a hollow column (11), a laser emitter (19), a laser receiver (18), a single-chip microcomputer (3), a lifting frame (12), a spring (15), and a shielding cloth (13). The hollow column (11) is arranged below the cooling table (8). One end of the hollow column (11) is fixedly connected to the turntable (7). The number of the lifting frames (12) is the same as that of the placement sleeves (10). A shielding cloth (13) is arranged on the lifting frame (12). A light-transmitting hole (14) is opened on the shielding cloth (13). The lifting frame (12) is movably matched with the hollow column (11) up and down. The lifting frame (12) and the placement sleeve (10) are in one-to-one correspondence, and the top of each lifting frame (12) is in contact with the bottom of the limit through hole (9) of its corresponding placement sleeve (10). One end of the spring (15) is fixedly connected to the top of the lifting frame (12), and the other end of the spring (15) is fixedly connected to the hollow column (11). A laser emitter (19) and a laser receiver (18) are respectively fixedly connected to both ends of the inner cavity of the hollow column (11), and the laser emitter (19) and the laser receiver (18) correspond to each other. The single-chip microcomputer (3) is installed on the base (1), and the single-chip microcomputer (3) is electrically connected to the laser receiver (18) and the motor (4) respectively.

2. The injection molding device for an automotive injection molded gear according to claim 1, characterized in that: When the gear is placed on the placement sleeve (10) for cooling, under the action of gravity, the shaft of the gear pushes the lifting frame (12) downward through the limit through-hole (9), so that the light-transmitting hole (14) descends to the laser emission path of the laser emitter (19). When all the placement sleeves (10) are placed with gears, all the light-transmitting holes (14) are located on the laser emission path of the laser emitter (19). At this time, the laser emitted by the laser emitter (19) will pass through all the light-transmitting holes (14) and irradiate on the laser receiver (18). After receiving the laser, the laser receiver (18) sends a signal to the single-chip microcomputer (3). When the single-chip microcomputer (3) continuously receives this signal for n minutes, where n minutes is greater than the minimum time required for cooling a single gear, the single-chip microcomputer (3) controls the motor (4) to make the turntable (7) rotate one week. After the turntable (7) rotates one week, all the gears on the placement sleeve (10) fall into the discharging mechanism (5). At this time, the gravity of the gears is lost, and under the action of the spring (15), the lifting frame (12) resets, so that the light-transmitting hole (14) on the shielding cloth (13) deviates from the laser emission path of the laser emitter (19), and the shielding cloth (13) shields the laser of the laser emitter (19).

3. An injection molding device for an automotive injection molded gear according to claim 2, characterized in that: A first rotating shaft (16) is rotatably connected to the top of the lifting frame (12), and a second rotating shaft (17) is rotatably connected to the bottom of the lifting frame (12). Two ends of the shielding cloth (13) are respectively fixedly connected to the first rotating shaft (16) and the second rotating shaft (17), and a knob is fixedly connected to one end of each of the first rotating shaft (16) and the second rotating shaft (17). The initial position of the light-transmitting hole (14) can be adjusted by rotating the first rotating shaft (16) and the second rotating shaft (17).

4. An injection molding method for an automotive injection molded gear, characterized in that: Using the injection molding device according to any one of claims 1 to 3 for gear cooling and molding, it includes the following steps: Step 1: The clamping device clamps the shaft into the injection molding machine. When there is a wiper gear in the injection molding machine, after the clamping device takes out the wiper gear, the shaft is placed in the injection molding machine for injection molding; Step 2: The clamping device clamps the wiper gear onto the first cooling and molding mechanism (6) until the first cooling and molding mechanism (6) is full of wiper gears. After it is full, the wiper gears are placed on the second cooling and molding mechanism (6) until the last cooling and molding mechanism (6) is full; Step 3: After all the gears on the cooling and molding mechanism (6) are cooled, the driving mechanism places the cooled gears on the cooling and molding mechanism (6) onto the discharging mechanism (5); Step 4: Repeat Steps 1 to 3.

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