Auxiliary demolding mechanism of injection molding machine

Abstract

The utility model relates to the technical field of molds, and discloses an injection molding machine auxiliary demolding mechanism which comprises a base, an L-shaped plate, a lower mold table, a demolding table and a mold ejecting assembly, a servo motor is fixedly connected to the top of the demolding table, a lead screw is fixedly connected to the output end of the servo motor through a coupler, and a sliding block is in threaded connection with the outer portion of the lead screw; one side of the sliding block is fixedly connected with a rack, the outside of the rack is meshed with a gear, the inside of the gear is fixedly connected with a rotating shaft, the outside of the rotating shaft is fixedly connected with a U-shaped plate, the outer side wall of the U-shaped plate is fixedly connected with a positive and negative rotation motor, and the output end of the positive and negative rotation motor is fixedly connected with a two-way threaded rod through a coupler; two clamping plates are symmetrically connected to the outer portion of the two-way threaded rod in a threaded mode. Compared with the prior art, the mold can be assisted in automatic demolding, the safety performance is high, and the demolding efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of molds, and in particular to an auxiliary demolding mechanism for an injection molding machine. Background Technique

[0002] At present, the injection molding method is applied to most process products. The advantages of the injection molding method are fast production speed, high efficiency, and high automation. The injection molding is often suitable for a large number of production molding processes. Usually, after injection molding, it is necessary to demold the workpiece in the mold, and currently, manual demolding is generally used.

[0003] Regarding the above related technologies, the inventor believes that under traditional technologies, manual picking consumes a lot of time. In addition, the temperature of the injection molding mold is relatively high, which may also cause burns to the staff, with low safety, greatly reducing the efficiency of the user to remove the workpiece, and there are defects. Therefore, an auxiliary demolding mechanism for an injection molding machine is proposed to solve the above problems.

[0004] The above information disclosed in this background technique is only used to increase the understanding of the background technique of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Utility Model Content

[0005] In order to solve the problems that under traditional technologies, manual picking consumes a lot of time, in addition, the temperature of the injection molding mold is relatively high, which may also cause burns to the staff, with low safety, and greatly reducing the efficiency of the user to remove the workpiece, this application provides an auxiliary demolding mechanism for an injection molding machine.

[0006] The auxiliary demolding mechanism for an injection molding machine provided by this application adopts the following technical solutions:

[0007] An auxiliary demoulding mechanism for an injection molding machine, comprising a base, an L-shaped plate, a lower mold table, a demoulding table and a top mold assembly. A servo motor is fixedly connected to the top of the demoulding table. The output end of the servo motor is fixedly connected to a lead screw through a coupling. A slider is threadedly connected to the outside of the lead screw. A rack is fixedly connected to one side of the slider. A gear is meshed with the outside of the rack. A rotating shaft is fixedly connected to the inside of the gear. A U-shaped plate is fixedly connected to the outside of the rotating shaft. A forward and reverse motor is fixedly connected to the outer side wall of the U-shaped plate. The output end of the forward and reverse motor is fixedly connected to a bidirectional lead screw through a coupling. Two clamping plates are symmetrically threadedly connected to the outside of the bidirectional lead screw. When the mold is injection molded and completed, the hydraulic cylinder starts to drive the upper mold base to rise, the damping rod is released, and the demoulding plate is driven back to the initial position. The servo motor starts. The servo motor drives the lead screw to rotate. The rotation of the lead screw drives the slider outside it to slide on the outside of the lead screw. The bottom of the slider is in close contact with the upper surface of the demoulding table, so that the rotation deviation of the slider can be avoided when it moves on the outside of the lead screw, thereby increasing the stability of the slider when it moves on the outside of the lead screw. The movement of the slider drives the rack to move, so that the gear meshed with the rack can be driven to rotate. Then, the rotating shaft and the U-shaped plate will rotate with the gear. The gear rotates until the mold on the demoulding plate is located between the two clamping plates. At this time, the forward and reverse motor is started. The forward and reverse motor drives the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw will drive the two clamping plates outside it to approach each other. The inner wall of the clamping plate close to the web of the U-shaped plate is in close contact with the inner wall of the web of the U-shaped plate, so that the rotation deviation of the clamping plate can be avoided when it moves on the outside of the bidirectional lead screw. The two clamping plates approaching each other can clamp and fix the mold. After that, the servo motor works to drive the lead screw to reverse, so that the two clamping plates can be rotated 180 degrees. Then the forward and reverse motor reverses, driving the two clamping plates to move away from each other, so that the formed mold will fall onto the surface of the demoulding table, realizing the automatic demoulding of the mold.

[0008] Preferably, a lower convex mold is arranged on the surface of the lower mold table. The top mold assembly includes circular grooves opened at the four corners of the top of the lower mold table. A damping rod is fixedly connected to the inner wall of the bottom of the circular groove. The four damping rods are fixedly connected to a demoulding plate at the ends away from the circular grooves. A through groove for the lower convex mold to pass through is opened on the surface of the demoulding plate. The hydraulic cylinder drives the upper mold base to move towards the demoulding plate. When the upper mold base moves to the surface of the demoulding plate, it will first squeeze the demoulding plate. At this time, the four damping rods are compressed until the demoulding plate moves to the surface of the lower mold table. At this time, a closed space will be formed between the upper mold base and the demoulding plate. Liquid plastic is injected between the upper mold base and the demoulding plate through the injection pipe on the upper mold base. Wait for the plastic to solidify, and the mold forming can be completed.

[0009] Preferably, a hydraulic cylinder is fixedly connected to the inner wall of the top of the L-shaped plate, and the output end of the hydraulic cylinder is fixedly connected to an upper mold base. By starting the hydraulic cylinder, the hydraulic cylinder drives the upper mold base to move towards the lower mold table.

[0010] Preferably, one end of the rotating shaft away from the gear is rotatably connected to a support plate, and the support plate is fixedly connected to the surface of the demolding table. The support plate can provide support for the rotating shaft and increase the stability of the rotating shaft during rotation.

[0011] Preferably, the L-shaped plate, the lower mold table, and the demolding table are all fixedly connected to the surface of the base.

[0012] In summary, the present application includes the following beneficial technical effects:

[0013] After the mold is injection-molded and completed, the demolding plate is driven back to the initial position. Under the cooperation of the servo motor, the lead screw, the slider, the rack, and the gear, the rotating shaft and the U-shaped plate will rotate with the gear until the mold on the demolding plate is located between the two clamping plates. At this time, the forward and reverse motor is started. Under the cooperation of the forward and reverse motor and the bidirectional threaded rod, the two clamping plates approach each other to realize the clamping and fixing of the mold. Then, the servo motor works to drive the lead screw to reverse, so that the two clamping plates can be rotated 180 degrees. Then the forward and reverse motor reverses, driving the two clamping plates to move away from each other, and the molded mold will fall onto the surface of the demolding table, realizing the automatic demolding of the mold; compared with the prior art, the present application can assist the mold to perform automatic demolding, has high safety performance, and improves the demolding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the application embodiment;

[0015] Figure 2 is the overall structural schematic diagram of the application embodiment;

[0016] Figure 3 is the cross-sectional structural schematic diagram of the application embodiment;

[0017] Figure 4 is Figure 1 the enlarged schematic diagram of the structure at A in

[0018] Figure 5 is Figure 2 the enlarged schematic diagram of the structure at B in

[0019] Description of reference numerals: 1, base; 2, L-shaped plate; 3, lower die table; 4, demolding table; 5, servo motor; 6, lead screw; 7, slider; 8, rack; 9, gear; 10, rotating shaft; 11, U-shaped plate; 12, forward and reverse motor; 13, bidirectional threaded rod; 14, clamping plate; 15, lower punch; 16, circular groove; 17, damping rod; 18, demolding plate; 19, through groove; 20, hydraulic cylinder; 21, upper die holder; 22, support plate. Detailed implementation mode

[0020] The following is a further detailed description of the present application in conjunction with the attached Figures 1-5 drawings.

[0021] The embodiment of the present application discloses an auxiliary demolding mechanism for an injection molding machine. Refer to Figure 1 、 Figure 4 and Figure 5, including a base 1, an L-shaped plate 2, a lower mold table 3, a demolding table 4 and a top mold assembly. A servo motor 5 is fixedly connected to the top of the demolding table 4. The output end of the servo motor 5 is fixedly connected to a lead screw 6 through a coupling. A slider 7 is threadedly connected to the outside of the lead screw 6. A rack 8 is fixedly connected to one side of the slider 7. A gear 9 is meshed with the outside of the rack 8. A rotating shaft 10 is fixedly connected to the inside of the gear 9. A U-shaped plate 11 is fixedly connected to the outside of the rotating shaft 10. A forward and reverse motor 12 is fixedly connected to the outer side wall of the U-shaped plate 11. The output end of the forward and reverse motor 12 is fixedly connected to a bidirectional lead screw 13 through a coupling. Two clamping plates 14 are symmetrically threadedly connected to the outside of the bidirectional lead screw 13. When the mold injection molding is completed, the hydraulic cylinder 20 starts to drive the upper mold base 21 to rise, and the damping rod 17 is released, driving the demolding plate 18 back to the initial position. The servo motor 5 starts, and the servo motor 5 drives the lead screw 6 to rotate. The rotation of the lead screw 6 drives the slider 7 outside it to slide on the outside of the lead screw 6. The bottom of the slider 7 is in close contact with the upper surface of the demolding table 4, so as to avoid the rotation deviation of the slider 7 when moving on the outside of the lead screw 6, thereby increasing the stability of the slider 7 when moving on the outside of the lead screw 6. The movement of the slider 7 drives the rack 8 to move, so as to drive the gear 9 meshed with the rack 8 to rotate. Then, the rotating shaft 10 and the U-shaped plate 11 will rotate with the gear 9. The gear 9 rotates until the mold on the demolding plate 18 is located between the two clamping plates 14. At this time, the forward and reverse motor 12 is started, and the forward and reverse motor 12 drives the bidirectional lead screw 13 to rotate. The rotation of the bidirectional lead screw 13 will drive the two clamping plates 14 outside it to approach each other. The inner wall of the clamping plate 14 close to the web of the U-shaped plate 11 is in close contact with the inner wall of the web of the U-shaped plate 11, so as to avoid the rotation deviation of the clamping plate 14 when moving on the outside of the bidirectional lead screw 13. The two clamping plates 14 approaching each other can clamp and fix the mold. After that, the servo motor 5 drives the lead screw 6 to reverse, so as to drive the two clamping plates 14 to rotate 180 degrees. Then the forward and reverse motor 12 reverses, driving the two clamping plates 14 to move away from each other, and the molded mold will fall onto the surface of the demolding table 4, realizing the automatic demolding of the mold.

[0022] Refer to Figure 2 and Figure 3, a lower convex die 15 is arranged on the surface of the lower die table 3, and the top die assembly is used to eject the formed mold to facilitate demolding. The top die assembly includes circular grooves 16 opened at the four corners of the top of the lower die table 3. A damping rod 17 is fixedly connected to the inner wall of the bottom of the circular groove 16. The four damping rods 17 are fixedly connected to a demolding plate 18 at the end far from the circular groove 16. A through groove 19 for the lower convex die 15 to pass through is opened on the surface of the demolding plate 18. The hydraulic cylinder 20 drives the upper die base 21 to move towards the demolding plate 18. When the upper die base 21 moves to the surface of the demolding plate 18, it will first squeeze the demolding plate 18. At this time, the four damping rods 17 are compressed until the demolding plate 18 moves to the surface of the lower die table 3. At this time, a closed space will be formed between the upper die base 21 and the demolding plate 18. Liquid plastic is injected between the upper die base 21 and the demolding plate 18 through the injection pipe on the upper die base 21. After the plastic solidifies, the mold forming can be completed.

[0023] Refer to Figure 1 and Figure 3 , a hydraulic cylinder 20 is fixedly connected to the inner wall of the top of the L-shaped plate 2. The output end of the hydraulic cylinder 20 is fixedly connected to the upper die base 21. By starting the hydraulic cylinder 20, the hydraulic cylinder 20 starts to drive the upper die base 21 to move towards the lower die table 3.

[0024] Refer to Figure 2 and Figure 5 , one end of the rotating shaft 10 far from the gear 9 is rotatably connected to a support plate 22. The support plate 22 is fixedly connected to the surface of the demolding table 4. The support plate 22 can provide support for the rotating shaft 10 and increase the stability of the rotating shaft 10 during rotation.

[0025] Refer to Figure 1 , Figure 2 and Figure 3 , the L-shaped plate 2, the lower die table 3, and the demolding table 4 are all fixedly connected to the surface of the base 1.

[0026] The implementation principle of an auxiliary demoulding mechanism for an injection molding machine in an embodiment of the present application is as follows: By starting the hydraulic cylinder 20, the hydraulic cylinder 20 is preferably of the TN16-20 type. When the hydraulic cylinder 20 is started, it drives the upper mold base 21 to move towards the lower mold table 3. After the mold is injection-molded, the hydraulic cylinder 20 drives the upper mold base 21 to move towards the demoulding plate 18. When the upper mold base 21 moves to the surface of the demoulding plate 18, it will first squeeze the demoulding plate 18. At this time, the four damping rods 17 are compressed until the demoulding plate 18 moves to the surface of the lower mold table 3. At this time, a closed space will be formed between the upper mold base 21 and the demoulding plate 18. Liquid plastic is injected between the upper mold base 21 and the demoulding plate 18 through the injection pipe on the upper mold base 21. After the plastic solidifies, the mold forming can be completed. Then, the hydraulic cylinder 20 is started to drive the upper mold base 21 to rise, the damping rods 17 are released, and the demoulding plate 18 is driven back to the initial position. The servo motor 5 is started. The servo motor 5 is preferably of the HBS57 type. When the servo motor 5 works, it drives the lead screw 6 to rotate. The rotation of the lead screw 6 drives the slider 7 outside it to slide on the outside of the lead screw 6. The bottom of the slider 7 is in close contact with the upper surface of the demoulding table 4, so as to avoid the rotation deviation of the slider 7 when it moves on the outside of the lead screw 6, thereby increasing the stability of the slider 7 when it moves on the outside of the lead screw 6. The movement of the slider 7 drives the rack 8 to move, which can drive the gear 9 meshing with the rack 8 to rotate. Then, the rotating shaft 10 and the U-shaped plate 11 will rotate with the gear 9. The gear 9 rotates until the mold on the demoulding plate 18 is located between the two clamping plates 14. At this time, the forward and reverse motor 12 is started. The forward and reverse motor 12 is preferably of the TCH(V)22-100-140CB type. When the forward and reverse motor 12 works, it drives the bidirectional threaded rod 13 to rotate. The rotation of the bidirectional threaded rod 13 will drive the two clamping plates 14 outside it to approach each other. The inner wall of the clamping plate 14 close to the web of the U-shaped plate 11 is in close contact with the inner wall of the web of the U-shaped plate 11, so as to avoid the rotation deviation of the clamping plate 14 when it moves on the outside of the bidirectional threaded rod 13. The mutual approach of the two clamping plates 14 can realize the clamping and fixing of the mold. Then, the servo motor 5 works to drive the lead screw 6 to reverse, which can drive the two clamping plates 14 to rotate 180 degrees. Then, the forward and reverse motor 12 reverses, driving the two clamping plates 14 to move away from each other, and the formed mold will fall onto the surface of the demoulding table 4, realizing the automatic demoulding of the mold.

[0027] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the internal communication of two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0028] Secondly: In the accompanying drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

[0030] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An auxiliary demoulding mechanism for an injection molding machine, comprising a base (1), an L-shaped plate (2), a lower mold platform (3), a demoulding platform (4) and a top mold assembly, characterized in that: A servo motor (5) is fixedly connected to the top of the demoulding table (4); the output end of the servo motor (5) is fixedly connected to a screw rod (6) via a coupling; the external thread of the screw rod (6) is connected to a slider (7); one side of the slider (7) is fixedly connected to a rack (8); the external part of the rack (8) is meshed with a gear (9); the internal part of the gear (9) is fixedly connected to a rotating shaft (10); the external part of the rotating shaft (10) is fixedly connected to a U-shaped plate (11); the external wall of the U-shaped plate (11) is fixedly connected to a forward and reverse motor (12); the output end of the forward and reverse motor (12) is fixedly connected to a bidirectional threaded rod (13) via a coupling; the external part of the bidirectional threaded rod (13) is symmetrically threadedly connected to two clamping plates (14).

2. The auxiliary demoulding mechanism of an injection molding machine according to claim 1, characterized in that: The surface of the lower die table (3) is provided with a lower punch (15), and the top die assembly includes circular grooves (16) opened at four corners of the top of the lower die table (3), the bottom inner wall of the circular groove (16) is fixedly connected with a damping rod (17), and the ends of the four damping rods (17) away from the circular groove (16) are commonly fixedly connected with a stripper plate (18), and the surface of the stripper plate (18) is provided with a through groove (19) for the lower punch (15) to pass through.

3. The auxiliary demoulding mechanism of an injection molding machine according to claim 1, characterized in that: A hydraulic cylinder (20) is fixedly connected to the top inner wall of the L-shaped plate (2), and an output end of the hydraulic cylinder (20) is fixedly connected to an upper die seat (21).

4. The auxiliary demoulding mechanism for an injection molding machine according to claim 1, characterized in that: One end of the rotating shaft (10) away from the gear (9) is rotatably connected to a support plate (22), and the support plate (22) is fixedly connected to the surface of the demoulding platform (4).

5. The auxiliary demoulding mechanism for an injection molding machine according to claim 1, characterized in that: The L-shaped plate (2), the lower die table (3) and the demoulding table (4) are all fixedly connected to the surface of the base (1).

Images