Automobile instrument panel injection molding process and multi-station injection molding equipment

Abstract

The application provides an automobile instrument panel injection molding process and a multi-station injection molding equipment, and belongs to the field of automobile injection molding. The problem that the efficiency of injection molding is affected because the instrument panel cannot be taken out until it is cooled after being placed for a period of time after injection molding is completed is solved. The technical scheme is as follows: a multi-station injection molding equipment for an automobile instrument panel, comprising an injection molding table, a through hole is formed in the center of the top end of the injection molding table, a rotating part is installed below the injection molding table, the rotating part comprises a bottom plate, a stepping motor, a driving tooth, a driven tooth, a rotating rod and a rotating disc, an L-shaped plate is fixed to the top end of the rotating disc, an injection molding cylinder is installed at the top end of the L-shaped plate, a piston rod at the inner part of the injection molding cylinder is provided with an upper mold, an injection port and an exhaust port are formed at the top end of the upper mold, a valve is arranged on the exhaust port, and a lower mold is uniformly formed at the center of the top end of the injection molding table. The beneficial effects of the application are as follows: multi-station injection molding is realized, and the efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of automotive injection molding, and specifically relates to an injection molding process for automotive dashboards and a multi-station injection molding equipment. Background Technology

[0002] Automotive instrument panels consist of various gauges and indicators, especially driver warning lights and alarms, providing drivers with the necessary information on vehicle operating parameters. These instruments, integrated into the dashboard, reflect the operating status of the vehicle's internal machinery and assist the driver. Currently, automotive instrument panels are typically manufactured using injection molding. This process involves heating the plastic, applying high pressure to the molten plastic, and injecting it to fill the mold cavity, where it solidifies. After injection molding, the instrument panel needs to be left to cool before it can be removed. During this time, injection molding cannot continue, thus affecting efficiency.

[0003] Based on this, the present invention provides an injection molding process for automotive dashboards and a multi-station injection molding equipment to solve the above-mentioned technical problems. Summary of the Invention

[0004] To address the issue that after injection molding, the instrument panel needs to be left to cool down before it can be removed, during which injection molding cannot continue and thus affects injection efficiency, this invention provides an automotive instrument panel injection molding process and a multi-station injection molding device.

[0005] A multi-station injection molding equipment for automotive dashboards includes an injection molding table with a through hole at the center of its top. A rotating component is installed below the injection molding table, comprising a base plate, a stepper motor, a drive gear, a driven gear, a rotating rod, and a turntable. The base plate is located below the injection molding table, the stepper motor is mounted on the top of the base plate, the drive gear is mounted on the output end of the stepper motor, the driven gear meshes with the drive gear and rotates on the base plate, the rotating rod is fixed at the center of the top of the driven gear, the turntable is fixed at the center of the top of the rotating rod, an L-shaped vertical plate is fixed at the center of the top of the turntable, an injection cylinder is mounted on the top of the L-shaped vertical plate, an upper mold is mounted on the piston rod end inside the injection cylinder, the top of the upper mold has an injection port and an exhaust port, an air valve is provided on the exhaust port, and a lower mold is evenly distributed around the center of the top of the injection molding table.

[0006] Furthermore, the diameter of the turntable is equal to the diameter of the through hole, the height of the turntable is greater than the depth of the through hole, and the top of the turntable is set higher than the top of the injection molding table.

[0007] Furthermore, a support ring is fixed to the edge of the turntable, and support rods are evenly installed around the bottom circumference of the support ring. A ring groove is provided at the top of the injection molding table, and ball bearings are installed in the ring groove.

[0008] Furthermore, a slot that mates with the L-shaped upright plate is provided at the center of the top of the turntable, and a through screw hole is provided on the side wall of the slot. A double-ended bolt is threaded into the through screw hole, and a fixing nut is threaded into both ends of the double-ended bolt.

[0009] Furthermore, the depth of the slot is greater than the depth of the through hole, and the bottom of the slot is set lower than the bottom of the through hole.

[0010] Furthermore, an ejector is installed on the injection molding platform, the ejector including an ejector plate, an ejector cylinder, an ejector pusher, an opening, a through groove, a support cylinder, and a closing plate.

[0011] Furthermore, the ejector plate is installed on the top edge of the L-shaped vertical plate, the ejector cylinder is installed on the ejector plate, the ejector push plate is installed on the piston rod end of the ejector cylinder, the opening is located at the bottom end of the lower mold, the through slot is opened at the top of the injection molding platform and is directly opposite the opening, the support cylinder is installed at the bottom of the injection molding platform, and the sealing plate is installed on the piston rod end inside the support cylinder.

[0012] Furthermore, the angle between the ejector plate and the L-shaped vertical plate is equal to the angle at which the lower mold is arranged on the top of the injection molding table. Circular grooves are provided on the bottom end of the inner cavity of the lower mold and the inner wall of the through groove. A ring plate is fitted on the top of the closing plate.

[0013] To better achieve the objectives of this invention, the present invention also provides an injection molding process for a multi-station injection molding equipment for automotive dashboards, comprising the following steps:

[0014] Step 1: Start the support cylinder, align the sealing plate with the bottom of the lower mold, and use the cooperation of the ring plate and the circular groove to seal all the bottom ends of the lower mold. Start the injection cylinder to drive the upper mold to move down and close with the lower mold. Use the high-pressure feeding equipment connected to the injection port to send the molten raw material into the mold closing space for injection molding.

[0015] Step 2: After injection molding, turn off the external high-pressure feeding equipment, open the air valve, release pressure through the exhaust port, remove the external high-pressure feeding equipment, reset the upper mold through the injection cylinder, start the stepper motor using the rotating part, drive the active gear to rotate, drive the driven gear to rotate, thereby making the turntable rotate, and adjust the injection cylinder to rotate above the other lower mold.

[0016] Step 3: Repeat steps 1 and 2. When the injection cylinder rotates to the top of the last lower mold, start the ejector cylinder to push the ejector plate down. At the same time, start the support cylinder to move the closing plate down. As the ejector plate squeezes the molded part in the first lower mold, it is pushed out of the lower mold to realize ejection. After ejection is completed, reset the ejected part.

[0017] Step four: Repeat step three to achieve material removal from multi-station injection molding.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. This invention, by setting up a base plate, a stepper motor, a driving gear, a driven gear, a rotating rod, and a turntable, starts an injection cylinder, drives the upper mold to move down and close with the lower mold. Using a high-pressure feeding device connected to the injection port, the molten raw material is fed into the mold-closing space for injection molding. After injection molding, the external high-pressure feeding device is turned off, the air valve is opened, and pressure is released through the exhaust port. The external high-pressure feeding device is removed, and the upper mold is reset by the injection cylinder. Using a rotating component, the stepper motor is started, driving the driving gear to rotate, which in turn drives the driven gear to rotate, thereby causing the turntable to rotate. The injection cylinder is then adjusted to rotate above another lower mold, realizing multi-station injection molding and improving efficiency.

[0020] 2. This invention, by setting up a material ejection plate, a material ejection cylinder, a material ejection pusher plate, an opening, a through groove, a support cylinder, and a closing plate, activates the material ejection cylinder when the injection cylinder rotates above the last lower mold, pushing the material ejection pusher plate downwards. At the same time, the support cylinder is activated, causing the closing plate to move downwards. As the material ejection pusher plate squeezes the molded part in the first lower mold, it pushes it out of the lower mold, thus realizing material ejection. After material ejection is completed, the material ejection part is reset, realizing multi-station injection molding material ejection. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

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

[0023] Figure 2 This is a three-dimensional view of the injection molding stage structure of the present invention.

[0024] Figure 3 This is a perspective view of the rotating component structure of the present invention.

[0025] Figure 4 This is a perspective view of the rotating component mounting structure of the present invention.

[0026] Figure 5 This is a perspective view of the L-shaped vertical plate structure of the present invention.

[0027] Figure 6 This is a perspective view of the lower mold structure of the present invention.

[0028] Figure 7 This is a perspective view of the closed plate structure of the present invention.

[0029] The attached figures are labeled as follows:

[0030] 1. Injection molding platform; 2. Through hole; 3. Base plate; 4. Stepper motor; 5. Driving gear; 6. Driven gear; 7. Rotating rod; 8. Turntable; 9. L-shaped vertical plate; 10. Injection cylinder; 11. Upper mold; 12. Injection port; 13. Exhaust port; 14. Air valve; 15. Lower mold; 16. Support ring; 17. Support rod; 18. Ring groove; 19. Slot; 20. Through screw hole; 21. Double-ended bolt; 22. Fixing nut; 23. Unloading horizontal plate; 24. Unloading cylinder; 25. Unloading push plate; 26. Opening; 27. Through groove; 28. Support cylinder; 29. ​​Closing plate; 30. Circular groove; 31. Ring plate. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the following embodiments are provided for further detailed description. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0032] Example 1

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a multi-station injection molding machine for automotive dashboards includes an injection table 1. A through hole 2 is formed at the center of the top of the injection table 1. A rotating component is installed below the injection table 1. The rotating component includes a base plate 3, a stepper motor 4, a driving gear 5, a driven gear 6, a rotating rod 7, and a turntable 8. The base plate 3 is located below the injection table 1. The stepper motor 4 is mounted on the top of the base plate 3. The driving gear 5 is mounted on the output end of the stepper motor 4. The driven gear 6 meshes with the driving gear 5 and rotates on the base plate 3. The rotating rod 7 is fixed at the center of the top of the driven gear 6. The turntable 8 is fixed at the center of the top of the rotating rod 7. The diameter of the turntable 8 is equal to the diameter of the through hole 2, and the height of the turntable 8 is greater than the depth of the through hole 2. The top of the turntable 8 is higher than the top of the injection molding table 1. An L-shaped vertical plate 9 is fixed at the center of the top of the turntable 8. An injection cylinder 10 is installed at the top of the L-shaped vertical plate 9. An upper mold 11 is installed at the end of the piston rod inside the injection cylinder 10. The top of the upper mold 11 has an injection port 12 and an exhaust port 13. An air valve 14 is installed on the exhaust port 13. A lower mold 15 is evenly distributed around the center of the top of the injection molding table 1. A support ring 16 is fixed at the edge of the turntable 8. Support rods 17 are evenly distributed around the bottom of the support ring 16. An annular groove 18 is formed at the top of the injection molding table 1. A ball bearing is installed in the annular groove 18. A slot that mates with the L-shaped vertical plate 9 is formed at the center of the top of the turntable 8. 19. The depth of slot 19 is greater than the depth of through hole 2. The bottom of slot 19 is lower than the bottom of through hole 2. A through screw hole 20 is provided on the side wall of slot 19. A double-ended bolt 21 is threaded into the through screw hole 20. A fixing nut 22 is threaded into both ends of the double-ended bolt 21. In use, L-shaped plate 9 is installed in slot 19. Using the thread engagement of double-ended bolt 21 and through screw hole 20, L-shaped plate 9 is fixed on turntable 8. Injection cylinder 10 is started, driving upper mold 11 to move down and close with lower mold 15. High-pressure feeding equipment connected to injection port 12 is used to send molten raw material into the mold closing space for injection molding. After molding, the external high-pressure feeding equipment is turned off, the air valve 14 is opened, and the pressure is released through the exhaust port 13. The external high-pressure feeding equipment is removed, and the upper mold 11 is reset by the injection cylinder 10. Using the rotating component, the stepper motor 4 is started to drive the active gear 5 to rotate, which in turn drives the driven gear 6 to rotate, thereby causing the turntable 8 to rotate. The injection cylinder 10 is adjusted to rotate above the other lower mold 15. Then, the injection cylinder 10 is started to drive the upper mold 11 to move down and close with the lower mold 15. The molten raw material is sent into the mold closing space by the external high-pressure feeding equipment connected to the injection port 12 for injection molding. The above steps are repeated to realize multi-station injection molding.

[0034] Example 2

[0035] Based on Example 1, see Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, an ejector assembly is installed on the injection molding table 1. The ejector assembly includes an ejector plate 23, an ejector cylinder 24, an ejector pusher plate 25, an opening 26, a through groove 27, a support cylinder 28, and a closing plate 29. The ejector plate 23 is installed on the top edge of the L-shaped vertical plate 9. The ejector cylinder 24 is installed on the ejector plate 23. The ejector pusher plate 25 is installed on the piston rod end of the ejector cylinder 24. The opening 26 is located at the bottom end of the lower mold 15. The through groove 27 is opened at the top of the injection molding table 1 and is positioned directly opposite the opening 26. The support cylinder 28... 8 is installed at the lower part of the injection molding table 1. The sealing plate 29 is installed at the end of the piston rod inside the support cylinder 28. The angle between the ejector plate 23 and the vertical plate 9 is equal to the angle at which the lower mold 15 is arranged at the top of the injection molding table 1. Circular grooves 30 are opened on the bottom end of the inner cavity of the lower mold 15 and the inner wall of the through groove 27. A ring plate 31 is installed on the top of the sealing plate 29. In use, the support cylinder 28 is activated, and the sealing plate 29 is aligned with the bottom end of the lower mold 15. The ring plate 31 and the circular groove 30 are used to seal the bottom ends of all the lower molds 15. The injection cylinder 10 is activated, driving the upper mold 11 to move downwards and close with the lower mold 15. Using an external high-pressure feeding device connected to the injection port 12, the molten material is fed into the mold-closing space for injection molding. After injection molding, the external high-pressure feeding device is shut off, the air valve 14 is opened, and pressure is released through the exhaust port 13. The external high-pressure feeding device is removed, and the upper mold 11 is reset using the injection cylinder 10. Using a rotating component, the stepper motor 4 is activated, driving the drive gear 5 to rotate, which in turn drives the driven gear 6 to rotate, thereby... Turntable 8 rotates, and injection cylinder 10 is adjusted to rotate above another lower mold 15. The above steps are repeated. When injection cylinder 10 rotates above the last lower mold 15, ejection cylinder 24 is activated to push ejection push plate 25 down. At the same time, support cylinder 28 is activated to make closing plate 29 move down. As ejection push plate 25 squeezes the molded part in the first lower mold 15, it is pushed out of the lower mold 15 to realize ejection. After ejection is completed, ejection part is reset and the above steps are repeated to realize multi-station injection molding ejection.

[0036] To better achieve the objectives of this invention, the present invention also provides an injection molding process for a multi-station injection molding equipment for automotive dashboards, comprising the following steps:

[0037] Step 1: Start the support cylinder 28, and place the closing plate 29 at the bottom end of the lower mold 15. Use the cooperation of the ring plate 31 and the circular groove 30 to close all the bottom ends of the lower mold 15. Start the injection cylinder 10, drive the upper mold 11 to move down and close with the lower mold 15. Use the high-pressure feeding equipment connected to the injection port 12 to send the molten raw material into the mold closing space for injection molding.

[0038] Step 2: After injection molding, turn off the external high-pressure feeding equipment, open the air valve 14, release the pressure through the exhaust port 13, remove the external high-pressure feeding equipment, reset the upper mold 11 through the injection cylinder 10, start the stepper motor 4 using the rotating part, drive the active gear 5 to rotate, drive the driven gear 6 to rotate, thereby making the turntable 8 rotate, and adjust the injection cylinder 10 to rotate above the other lower mold 15;

[0039] Step 3: Repeat steps 1 and 2. When the injection cylinder 10 rotates to the top of the last lower mold 15, start the ejector cylinder 24 to push the ejector plate 25 down. At the same time, start the support cylinder 28 to make the closing plate 29 down. As the ejector plate 25 squeezes the molded part in the first lower mold 15, it is pushed out of the lower mold 15 to realize the ejection. After the ejection is completed, reset the ejected part.

[0040] Step four: Repeat step three to achieve material removal from multi-station injection molding.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-station injection molding equipment for automotive dashboards, comprising an injection molding table (1), characterized in that: The injection molding platform (1) has a through hole (2) at the center of its top. A rotating component is installed below the injection molding platform (1). The rotating component includes a base plate (3), a stepper motor (4), a driving gear (5), a driven gear (6), a rotating rod (7), and a turntable (8). The base plate (3) is located below the injection molding platform (1). The stepper motor (4) is installed at the top of the base plate (3). The driving gear (5) is installed at the output end of the stepper motor (4). The driven gear (6) meshes with the driving gear (5) and rotates on the base plate (3). The rotating rod (7) is fixed at the center of the top of the driven gear (6). The turntable (8) is fixed at the center of the top of the rotating rod (7). An L-shaped vertical plate (9) is fixed at the top center. An injection cylinder (10) is installed at the top of the L-shaped vertical plate (9). An upper mold (11) is installed at the end of the piston rod inside the injection cylinder (10). An injection port (12) and an exhaust port (13) are opened at the top of the upper mold (11). An air valve (14) is provided on the exhaust port (13). A lower mold (15) is evenly opened around the center of the top of the injection table (1). A support ring (16) is fixed at the edge of the turntable (8). A support rod (17) is evenly installed around the bottom of the support ring (16). A ring groove (18) is opened at the top of the injection table (1). A ball bearing is installed in the ring groove (18). The injection molding table (1) is equipped with an ejector component, which includes an ejector plate (23), an ejector cylinder (24), an ejector pusher plate (25), an opening (26), a through groove (27), a support cylinder (28), and a closing plate (29). The ejector plate (23) is installed on the top edge of the L-shaped vertical plate (9), the ejector cylinder (24) is installed on the ejector plate (23), the ejector pusher plate (25) is installed at the piston rod end of the ejector cylinder (24), and the opening (26) is located at the bottom end of the lower mold (15). The through groove (27) is set at the top of the injection molding table (1) and is directly opposite the opening (26). The support cylinder (28) is installed at the bottom of the injection molding table (1). The closing plate (29) is installed at the end of the piston rod inside the support cylinder (28). The angle between the ejector plate (23) and the L-shaped plate (9) is equal to the angle at which the lower mold (15) is arranged at the top of the injection molding table (1). The bottom of the inner cavity of the lower mold (15) and the inner wall of the through groove (27) are both provided with circular grooves (30). The top of the closing plate (29) is fitted with a ring plate (31).

2. The multi-station injection molding equipment for automotive dashboards according to claim 1, characterized in that, The diameter of the turntable (8) is equal to the diameter of the through hole (2), the height of the turntable (8) is greater than the depth of the through hole (2), and the top of the turntable (8) is set higher than the top of the injection molding table (1).

3. The multi-station injection molding equipment for automotive dashboards according to claim 1, characterized in that, The turntable (8) has a slot (19) at the top center that mates with the L-shaped plate (9). The slot (19) has a through screw hole (20) on its side wall. The through screw hole (20) is threaded with a double-ended bolt (21). The two ends of the double-ended bolt (21) are threaded with fixing nuts (22).

4. The multi-station injection molding equipment for automotive dashboards according to claim 3, characterized in that, The depth of the slot (19) is greater than the depth of the through hole (2), and the bottom of the slot (19) is set lower than the bottom of the through hole (2).

5. An injection molding process for a multi-station injection molding equipment for automotive dashboards as described in claim 4, characterized in that, Includes the following steps: Step 1: Start the support cylinder (28), place the closing plate (29) at the bottom of the lower mold (15), and use the cooperation of the ring plate (31) and the circular groove (30) to close all the bottom ends of the lower mold (15). Start the injection cylinder (10), drive the upper mold (11) to move down and close with the lower mold (15). Use the injection port (12) to connect the high pressure feeding device to send the molten raw material into the mold closing space for injection molding. Step 2: After injection molding, turn off the external high-pressure feeding equipment, open the air valve (14), release the pressure through the exhaust port (13), remove the external high-pressure feeding equipment, reset the upper mold (11) through the injection cylinder (10), start the stepper motor (4) using the rotating part, drive the active gear (5) to rotate, drive the driven gear (6) to rotate, thereby making the turntable (8) rotate, and adjust the injection cylinder (10) to rotate above the other lower mold (15); Step 3: Repeat steps 1 and 2. When the injection cylinder (10) rotates to the top of the last lower mold (15), start the ejection cylinder (24) to push the ejection push plate (25) down. At the same time, start the support cylinder (28) to make the closing plate (29) move down. As the ejection push plate (25) squeezes the molded part in the first lower mold (15), it is pushed out of the lower mold (15) to realize the ejection. After the ejection is completed, reset the ejected part. Step four: Repeat step three to achieve material removal from multi-station injection molding.

Images