An injection mold for automobile interior door panel

Abstract

The invention relates to an injection mold for an automobile interior door panel, comprising a rotating turntable and a mold body, wherein a supporting column is installed at a rotating end of the rotating turntable, and the supporting column is connected to a center position of a transposition table, and a plurality of mold bodies are symmetrically installed on the transposition table, and a ring frame is installed on the rotating turntable through a supporting arm, and a plurality of protrusions are arranged at equal angles on the inner side of the ring frame, and an inclined surface is arranged on the protrusion; when the mold body rotates and transposes, a guide wheel moves along an inner wall of the ring frame and the inclined surface of the protrusion, and under the cooperation of a second spring, the reciprocating movement of the guide wheel is realized, and then the reciprocating movement of the reciprocating plate is realized, and the lower mold is continuously impacted by a rubber block, so that the material is fully filled into the injection cavity, and the existence of local depressions, lack of material and bubbles is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding of automobile interior door panels, and in particular to an injection mold of an automobile interior door panel. Background Art

[0002] Car interior door panels are used to decorate the interior of car doors. Car interior door panels are formed by injection molding. The injection mold is a plastic material that is completely molten at a certain temperature and stirred by a screw. It is injected into the mold cavity with high pressure and is formed after cooling and solidification.

[0003] When the existing automobile interior door panels are injection molded, in order to avoid local depressions on the surface of the product, the injection molding machine is used to maintain pressure in the injection mold, and the automobile interior door panels need to be cooled and formed before separation. Due to the long pressure holding and cooling time, the injection molding process efficiency is low; and during injection molding, some hot air exists in the injection molding material, and it is easy for the injection molding material to fail to completely fill the injection molding cavity, which is easy to cause local depressions, material shortages, bubbles, etc. Summary of the invention

[0004] The problem to be solved by the present invention is to provide an injection mold for automobile interior door panels, which solves the problem that when the existing automobile interior door panels are injection molded, in order to avoid local depression on the surface of the product, the injection molding machine is used to maintain pressure in the injection mold, and the automobile interior door panels need to be separated after cooling and molding. Due to the long pressure holding and cooling time, the injection molding process efficiency is low; and when injection molding is performed, some hot air exists in the injection molding material, and it is easy for the injection molding material to completely fill the injection molding cavity, which is easy to cause local depression, material shortage and bubbles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An injection mold for an automobile interior door panel, comprising a rotating turntable and a mold body, a supporting column is installed at the rotating end of the rotating turntable, the supporting column is connected to the center position of the transposition table, a plurality of mold bodies are symmetrically installed on the transposition table, the rotating turntable is installed with a ring frame through a supporting arm, a plurality of protrusions are arranged at equal angles on the inner side of the ring frame, and an inclined surface is arranged on the protrusion;

[0007] The mold body includes a bottom plate, on which a support seat is symmetrically mounted, a lower mold is mounted on the support seat, and a vibrating mechanism is mounted on the lower mold for vibrating the lower mold along a ring frame, an upper mold is mounted on the lower mold, a front mold plate is mounted on the upper mold, an injection port is opened on the front mold plate, and an adjustment mechanism is installed in the front mold plate.

[0008] Preferably, a lifting plate is slidably installed between the two support seats, and lifting columns are installed around the top of the lifting plate, and a first spring is sleeved on the outer side of the lifting column, and a plurality of ejector pins are installed on the top side of the lifting plate.

[0009] Preferably, a T-shaped plate is installed on the bottom side of the transposition platform, a lifting column and two connecting columns are installed on the top side of the T-shaped plate, a first pneumatic cylinder is installed on the bottom side of the T-shaped plate, and the telescopic end of the first pneumatic cylinder is connected to the bottom side of the transposition platform, the lifting column passes through the transposition platform and the bottom plate and is connected to the lifting plate, and the connecting columns are respectively connected to the two ends of the front template.

[0010] Preferably, the vibrating mechanism includes side plates installed on both sides of the lower mold, and guide columns are installed through the side plates at the same end of the lower mold, and the ends of the guide columns are respectively connected to the ends of the reciprocating plates, and a plurality of rubber blocks are arranged on the inner side of the reciprocating plates.

[0011] Preferably, a wheel frame is installed on the outer side of the reciprocating plate close to the ring frame, and a guide wheel rolling along the inner wall of the ring frame is installed on the wheel frame.

[0012] Preferably, a limiting plate is installed in the middle of the guide column, and second springs are respectively mounted on both ends of the guide column and on both sides of the limiting plate.

[0013] Preferably, the adjustment mechanism includes a reversing disk rotatably installed inside the front template, and the reversing disk is symmetrically provided with straight flow channels and right-angle flow channels, the straight flow channels are connected with the injection port and the upper mold, an air pressure cavity is opened in the front template, and the air pressure cavity is connected with the connecting air channel, and the right-angle flow channel is connected with the connecting air channel and the upper mold.

[0014] Preferably, a second pneumatic cylinder is installed on the top side of the front template, and the telescopic end of the second pneumatic cylinder is connected to the connecting plate. A slide rail is provided on the front template, and a rack is slidably installed on the slide rail, and the end of the rack is connected to the connecting plate. A transmission shaft is installed in the middle of the top side of the reversing disk, and a rotating tooth engaged with the rack is installed on the top of the transmission shaft.

[0015] Preferably, a third pneumatic cylinder is installed at the end of the front template, and a piston is installed at the telescopic end of the third pneumatic cylinder located in the pneumatic chamber.

[0016] Preferably, an air nozzle is installed on the outer side of the upper mold, and the air nozzle is connected to the injection molding cavity in the upper mold through an exhaust passage inside the upper mold.

[0017] The beneficial effects of the present invention are:

[0018] The mold body can be replaced by rotating the turntable, which makes it easier for the mold body to circulate between the unloading station and the injection molding station. There is no need to maintain pressure through the injection molding machine and wait for the automobile interior door panel injection molding parts to cool and be demolded, which improves the injection molding efficiency.

[0019] By rotating the reversing disk, it is convenient to adjust the connection between the injection molding cavity of the upper mold and the lower mold and the outside world. When the injection molding cavity is in a closed state with the outside world, it is convenient to evacuate the injection molding cavity. When the straight flow channel is connected with the injection molding cavity, it is convenient to perform injection molding. When the right-angle flow channel is connected with the injection molding cavity and the connecting air channel, the third pneumatic cylinder drives the piston to move in the pneumatic cavity, and the injection molding cavity of the upper mold and the lower mold is pressurized and maintained to ensure that the material inside the injection molding cavity is fully filled to avoid the existence of local depressions or lack of materials.

[0020] When the mold body rotates and changes position, the guide wheel moves along the inner wall of the ring frame and the raised inclined surface. With the cooperation of the second spring, the guide wheel can move back and forth, and then the reciprocating plate can move back and forth. The rubber block continuously impacts the lower mold to fully fill the injection cavity with material, avoiding local depressions, material shortages and bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the first structure of the present invention as a whole;

[0022] Figure 2 It is a schematic diagram of the second structure of the present invention as a whole;

[0023] Figure 3 A top view of the present invention;

[0024] Figure 4 This is a schematic diagram of the first structure of the mold body of the present invention;

[0025] Figure 5 It is a cross-sectional view of the front template of the present invention.

[0026] Legend:

[0027] 1. Rotating turntable; 2. Support column; 3. Transposition table; 4. Mold body; 5. Ring frame; 6. Protrusion; 7. Inclined surface; 8. T-plate; 9. First pneumatic cylinder; 10. Lifting column; 11. Connecting column; 12. Bottom plate; 13. Support seat; 14. Lower mold; 15. Lifting plate; 16. Ejector column; 17. First spring; 18. Ejector pin; 19. Upper mold; 20. Front mold plate; 21. Side plate; 22. Guide column; 2 3. Reciprocating plate; 24. Rubber block; 25. Wheel frame; 26. Guide wheel; 27. Limit plate; 28. Second spring; 29. ​​Injection port; 30. Reversing plate; 31. Straight flow channel; 32. Right-angle flow channel; 33. Air pressure chamber; 34. Connecting air channel; 35. Piston; 36. Second air cylinder; 37. Slide rail; 38. Rack; 39. Connecting plate; 40. Rotating gear; 41. Transmission shaft; 42. Third air cylinder. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Specific examples are given below.

[0030] See also Figure 1~Figure 5 , an injection mold for an automobile interior door panel, comprising a rotating turntable 1 and a mold body 4, a support column 2 is installed at the rotating end of the rotating turntable 1, the support column 2 is connected to the center position of a transposition table 3, a plurality of mold bodies 4 are symmetrically installed on the transposition table 3, the rotating turntable 1 is installed with a ring frame 5 through a support arm, a plurality of protrusions 6 are arranged at equal angles on the inner side of the ring frame 5, and a slope 7 is arranged on the protrusion 6, the rotating turntable 1 drives the transposition table 3 to rotate, and then the mold body 4 on the transposition table 3 is replaced, so that the injection molding and unloading of the mold body 4 are respectively carried out, thereby improving the injection molding efficiency;

[0031] The mold body 4 includes a bottom plate 12, on which a support seat 13 is symmetrically mounted, on which a lower mold 14 is mounted, and on which a vibrating mechanism for vibrating the lower mold 14 by moving along the ring frame 5 is mounted, the vibrating mechanism includes side plates 21 mounted on both sides of the lower mold 14, and a guide column 22 is installed through the side plate 21 at the same end of the lower mold 14, the ends of the guide column 22 are respectively connected to the ends of the reciprocating plate 23, a plurality of rubber blocks 24 are arranged on the inner side of the reciprocating plate 23, a wheel frame 25 is installed on the outer side of the reciprocating plate 23 close to the ring frame 5, and a guide wheel 26 rolling along the inner wall of the ring frame 5 is installed on the wheel frame 25, a limiting plate 27 is installed in the middle of the guide column 22, and second springs 28 are respectively installed at both ends of the guide column 22 and on both sides of the limiting plate 27, and the rotating turntable 1 is provided with The movable transposition table 3 starts to rotate. During the rotation, the rubber block 24 on one of the reciprocating plates 23 is in contact with the lower mold 14, and the guide wheel 26 of the wheel frame 25 moves along the inner wall of the ring frame 5. When the guide wheel 26 moves along the inclined surface 7, the two reciprocating plates 23 are driven to move to one side, and the limit plate 27 is driven to move through the guide column 22, so that the second spring 28 at one end of the guide column 22 is stretched, and the second spring 28 at the other end of the guide column 22 is compressed. At this time, the rubber block 24 on the other reciprocating plate 23 contacts and collides with the lower mold 14. When the guide wheel 26 falls from the protrusion 6, the compressed and stretched second springs 28 are restored to their original state, driving the rubber block 24 on one of the reciprocating plates 23 to contact and collide with the lower mold 14, and vibrating and filling the injection cavity;

[0032] An upper mold 19 is installed on the lower mold 14, and a front mold plate 20 is installed on the upper mold 19. A lifting plate 15 is slidably installed between the two support seats 13. Top columns 16 are installed on all sides of the top of the lifting plate 15, and a first spring 17 is sleeved on the outer side of the top column 16. A plurality of ejectors 18 are installed on the top side of the lifting plate 15. A T-shaped plate 8 is installed on the bottom side of the transposition platform 3. A lifting column 10 and two connecting columns 11 are installed on the top side of the T-shaped plate 8. A first pneumatic cylinder 9 is installed on the bottom side of the T-shaped plate 8, and the telescopic end of the first pneumatic cylinder 9 is connected to the bottom side of the transposition platform 3. The lifting column 10 passes through the transposition platform 3 and the bottom plate 12 and the lifting column 11. The connecting column 11 is connected to the two ends of the front template 20, and the T-plate 8 is driven to move by the first pneumatic cylinder 9. When the first pneumatic cylinder 9 is in an extended state, the T-plate 8 moves down, and the connecting column 11 pulls the upper mold 19 to fit closely with the lower mold 14, and the lifting column 10 is separated from the lifting plate 15. When the first pneumatic cylinder 9 is in a contracted state, the T-plate 8 moves up, and the connecting column 11 drives the upper mold 19 to move up and separate from the lower mold 14. The lifting plate 15 is driven up by the lifting column 10, and the automobile interior door panel in the injection cavity of the lower mold 14 is ejected by the ejector column 16 and the ejector pin 18;

[0033] An injection port 29 is provided on the front template 20, and an adjustment mechanism is installed in the front template 20, the adjustment mechanism includes a reversing disc 30 rotatably installed inside the front template 20, and a straight flow channel 31 and a right-angle flow channel 32 are symmetrically provided on the reversing disc 30, the straight flow channel 31 is connected to the injection port 29 and the upper mold 19, an air pressure chamber 33 is provided in the front template 20, and the air pressure chamber 33 is connected to the connecting air channel 34, the right-angle flow channel 32 is connected to the connecting air channel 34 and the upper mold 19, a second air pressure cylinder 36 is installed on the top side of the front template 20, and the telescopic end of the second air pressure cylinder 36 is connected to the connecting plate 39, a slide rail 37 is provided on the front template 20, and a rack 38 is slidably installed on the slide rail 37, and the end of the rack 38 is connected to the connecting plate 39, a transmission shaft 41 is installed in the middle of the top side of the reversing disc 30, and a rotating tooth 40 meshing with the rack 38 is installed on the top of the transmission shaft 41, and the end of the front template 20 is installed There is a third pneumatic cylinder 42, the telescopic end of the third pneumatic cylinder 42 is located in the pneumatic chamber 33 and a piston 35 is installed therein. The second pneumatic cylinder 36 drives the connecting plate 39 to move, and then drives the rack 38 to move along the slide rail 37, and cooperates with the meshing rotating gear 40 to realize the rotation of the transmission shaft 41 and the reversing disk 30. First, the injection port 29 and the upper mold 19 are blocked by the reversing disk 30, and then the injection cavities of the upper mold 19 and the lower mold 14 are vacuumed through the air nozzle. When the material port of the injection molding machine corresponds to the injection port 29, the reversing disk 30 rotates to the straight flow channel 31 corresponding to the injection port 29, and the injection molding machine works to inject the material into the mold body 4. After the material is filled, the reversing disk 30 rotates to the right-angle flow channel 32 to communicate with the connecting air channel 34. At this time, the third pneumatic cylinder 42 drives the piston 35 to move in the pneumatic chamber 33, and the injection cavities of the upper mold 19 and the lower mold 14 are pressurized and maintained.

[0034] An air nozzle is installed on the outside of the upper mold 19, and the air nozzle is connected to the injection cavity in the upper mold 19 through the exhaust duct inside the upper mold 19, so as to facilitate connection with an external air pump through the air nozzle to realize vacuuming of the injection cavity of the lower mold 14 and the upper mold 19, thereby avoiding incomplete exhaust during subsequent injection molding.

[0035] Working principle: The support column 2 is driven to rotate by rotating the turntable 1, and then the position change table 3 is driven to rotate, and the positions of the two mold bodies 4 are adjusted. The two mold bodies 4 are cycled in the unloading station and the injection molding station. When the mold body 4 is located at the injection molding station, the first pneumatic cylinder 9 is in an extended state, and the upper mold 19 and the lower mold 14 are pulled to fit closely through the connecting column 11. The second pneumatic cylinder 36 drives the connecting plate 39 to move, and then drives the rack 38 to move along the slide rail 37, and cooperates with the meshing rotating gear 40 to realize the rotation of the transmission shaft 41 and the reversing plate 30. First, the injection port 29 and the upper mold 19 are blocked by the reversing disk 30, and then the injection cavities of the upper mold 19 and the lower mold 14 are vacuumed through the air nozzle. When the injection port of the injection molding machine corresponds to the injection port 29, the reversing disk 30 rotates to the straight flow channel 31 corresponding to the injection port 29, and the injection molding machine works to inject the material into the mold body 4. After the material is filled, the reversing disk 30 rotates to the right-angle flow channel 32 to communicate with the connecting air channel 34. At this time, the third pneumatic cylinder 42 works to drive the piston 35 to move in the pneumatic chamber 33, pressurizes and maintains the injection cavities of the upper mold 19 and the lower mold 14, and rotates at the same time. The turntable 1 drives the transposition table 3 to start rotating. During the rotation, the rubber block 24 on one of the reciprocating plates 23 is in contact with the lower die 14, and the guide wheel 26 of the wheel frame 25 moves along the inner wall of the ring frame 5. When the guide wheel 26 moves along the inclined surface 7, the two reciprocating plates 23 are driven to move to one side, and the limit plate 27 is driven to move through the guide column 22, so that the second spring 28 at one end of the guide column 22 is stretched, and the second spring 28 at the other end of the guide column 22 is compressed. At this time, the rubber block 24 on the other reciprocating plate 23 contacts and collides with the lower die 14. When the guide wheel 26 moves from the convex When the lift 6 falls down, the compressed and stretched second spring 28 returns to its original state, driving the rubber block 24 on one of the reciprocating plates 23 to contact and collide with the lower mold 14, and vibrating and filling the injection cavity. When the mold body 4 rotates to the unloading station, the first pneumatic cylinder 9 contracts to drive the T-plate 8 to move up, realizing the upward movement of the lifting column 10 and the connecting column 11. The lifting column 10 lifts the lifting plate 15, and the ejector column 16 and the ejector pin 18 on the lifting plate 15 move up to eject the automobile interior door panel injection molded part. The upward movement of the connecting column 11 realizes the separation of the lower mold 14 and the upper mold 19.

Claims

1. An injection mold for an automobile interior door panel, characterized in that: The invention comprises a rotating turntable (1) and a mold body (4), wherein a support column (2) is installed at a rotating end of the rotating turntable (1), the support column (2) is connected to the center position of a transposition table (3), a plurality of mold bodies (4) are symmetrically installed on the transposition table (3), and a ring frame (5) is installed on the rotating turntable (1) through a support arm, a plurality of protrusions (6) are arranged at equal angles on the inner side of the ring frame (5), and an inclined surface (7) is arranged on the protrusion (6); The mold body (4) comprises a bottom plate (12), a support seat (13) is symmetrically mounted on the bottom plate (12), a lower mold (14) is mounted on the support seat (13), and a vibrating mechanism is mounted on the lower mold (14) for vibrating the lower mold (14) by moving along the ring frame (5), an upper mold (19) is mounted on the lower mold (14), a front mold plate (20) is mounted on the upper mold (19), an injection port (29) is opened on the front mold plate (20), and an adjustment mechanism is mounted inside the front mold plate (20); The adjustment mechanism comprises a reversing disc (30) rotatably mounted inside the front template (20), and the reversing disc (30) is symmetrically provided with a straight flow channel (31) and a right-angle flow channel (32), the straight flow channel (31) is connected to the injection port (29) and the upper mold (19), a pneumatic cavity (33) is provided inside the front template (20), and the pneumatic cavity (33) is connected to a connecting air channel (34), the right-angle flow channel (32) is connected to the connecting air channel (34) and the upper mold (19), a second pneumatic cylinder (36) is mounted on the top side of the front template (20), the telescopic end of the second pneumatic cylinder (36) is connected to the connecting plate (39), and the front template ( A slide rail (37) is provided on the front mold (20), and a rack (38) is slidably mounted on the slide rail (37), the end of the rack (38) is connected to a connecting plate (39), a transmission shaft (41) is installed in the middle of the top side of the reversing plate (30), and a rotating tooth (40) meshing with the rack (38) is installed on the top of the transmission shaft (41), a third pneumatic cylinder (42) is installed at the end of the front mold plate (20), and a piston (35) is installed in the telescopic end of the third pneumatic cylinder (42) located in the pneumatic chamber (33), and an air nozzle is installed on the outer side of the upper mold (19), and the air nozzle is connected to the injection molding cavity in the upper mold (19) through an exhaust duct inside the upper mold (19).

2. The injection mold for an automobile interior door panel according to claim 1, characterized in that: A lifting plate (15) is slidably mounted between the two support seats (13), and top columns (16) are mounted around the top of the lifting plate (15). A first spring (17) is sleeved on the outside of the top column (16), and a plurality of ejector pins (18) are mounted on the top side of the lifting plate (15).

3. The injection mold for an automobile interior door panel according to claim 2, characterized in that: A T-shaped plate (8) is installed on the bottom side of the transposition platform (3), a lifting column (10) and two connecting columns (11) are installed on the top side of the T-shaped plate (8), a first pneumatic cylinder (9) is installed on the bottom side of the T-shaped plate (8), and the telescopic end of the first pneumatic cylinder (9) is connected to the bottom side of the transposition platform (3), the lifting column (10) passes through the transposition platform (3) and the bottom plate (12) and is connected to the lifting plate (15), and the connecting columns (11) are respectively connected to the two ends of the front template (20).

4. The injection mold for an automobile interior door panel according to claim 3, characterized in that: The material vibrating mechanism comprises side plates (21) mounted on both sides of both ends of the lower mold (14), and a guide column (22) is installed through the side plate (21) at the same end of the lower mold (14), and the ends of the guide column (22) are respectively connected to the ends of a reciprocating plate (23), and a plurality of rubber blocks (24) are arranged on the inner side of the reciprocating plate (23).

5. The injection mold for an automobile interior door panel according to claim 4, characterized in that: A wheel frame (25) is installed on the outer side of the reciprocating plate (23) close to the ring frame (5), and a guide wheel (26) is installed on the wheel frame (25) to roll along the inner wall of the ring frame (5).

6. The injection mold for an automobile interior door panel according to claim 5, characterized in that: A limiting plate (27) is installed in the middle of the guide column (22), and second springs (28) are respectively mounted on both ends of the guide column (22) and located on both sides of the limiting plate (27).

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