A two-color mold rotating device

Abstract

This utility model discloses a two-color mold rotating device, relating to the field of two-color mold technology. The device includes a base, a turntable, and a front mold fixing plate. Two rear molds are symmetrically fixed at the upper end of the turntable, and two front molds are symmetrically fixed at the lower end of the front mold fixing plate. A rotating groove is provided at the upper end of the base, and a support rod is fixedly installed at the bottom of the turntable. The support rod is located inside the rotating groove, and a spring groove is provided at the bottom of the support rod. A sliding limit block is slidably installed inside the spring groove, and the sliding limit block extends to the outside of the spring groove and is fixedly connected to a connecting block. An installation groove is provided on the inner wall of the rotating groove. A rotating structure is provided in the inner cavity of the base, and a locking structure is provided inside the installation groove and on the outer wall of the support rod. The rotating structure drives the turntable to quickly change molds, while the locking structure ensures that the turntable is stable and does not move after it is in position. A shock-absorbing structure is provided inside the spring groove to reduce noise. The damping spring and damper in the device effectively reduce operating noise and vibration, improving the working environment.

Description

Technical Field

[0001] This utility model relates to the field of two-color mold technology, specifically a two-color mold rotating device. Background Technology

[0002] In the injection mold industry, two-color injection molding technology is highly favored because it can produce plastic products with bright color contrasts and beautiful appearance.

[0003] The existing patent publication number CN219427294U describes a rotating mechanism for a two-color mold cavity. Through the design of support columns, first ball bearings, and second ball bearings, the two-color mold cavity is made more stable during rotation. Through the design of the positioning mechanism, after the two-color mold cavity rotates 180 degrees, the front mold turntable can be locked, which increases the stability of the rotating mechanism and prevents it from shaking. This greatly improves the fit between the front mold and the rear mold, thereby improving the quality of the injection molded product and further extending the service life of the mold.

[0004] However, the vibration damping effect of the above-mentioned two-color mold cavity is not good, and noise is easily generated during rotation.

[0005] Based on this, a two-color mold rotating device is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0006] The purpose of this invention is to provide a two-color mold rotating device to solve the problem in the background art of poor vibration damping effect of two-color mold cavity and the easy generation of noise during rotation.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A two-color mold rotating device includes a base, a turntable, and a front mold fixing plate; Two rear molds are symmetrically fixed at the upper end of the turntable, and two front molds are symmetrically fixed at the lower end of the front mold fixing plate. The positions of the rear molds and the front molds correspond to each other. The upper end of the base is provided with a rotating groove, and a support rod is fixedly installed at the bottom of the turntable. The support rod is located inside the rotating groove, and a spring groove is provided at the bottom of the support rod. A sliding limit block is slidably installed inside the spring groove, and the sliding limit block extends to the outside of the spring groove and is fixedly connected to a connecting block. The inner wall of the rotating groove is provided with an installation groove; It also includes a rotating structure, which is disposed in the inner cavity of the base and is used to drive the turntable to rotate; A vibration damping structure is provided inside a spring groove to reduce noise. A locking structure is provided inside the mounting groove and on the outer wall of the support rod for locking the turntable.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative: the rotating structure includes a rotating shaft, which is rotatably mounted in the inner cavity of the base. A driven gear is fixedly mounted on the outer wall of the rotating shaft. The driven gear meshes with a drive assembly, which is mounted in the inner cavity of the base. A through hole is provided at the upper end of the base. The upper end of the rotating shaft extends through the through hole to the upper end of the base and is fixedly mounted with a coupling. The upper end of the coupling is fixedly connected to the middle position of the bottom end of the turntable.

[0009] In one alternative: the drive assembly includes a rotary motor mounted in the inner cavity of the base, the output end of the rotary motor being fixedly connected to a main gear, and the main gear meshing with a driven gear.

[0010] In one alternative embodiment: the damping structure includes a damping spring, the damping spring is installed inside a spring groove, a damper is sleeved inside the damping spring, the upper end of the damping spring and the damper are fixedly connected to the top of the spring groove, and the lower end of the damping spring and the damper are fixedly connected to a sliding limit block.

[0011] In one alternative: the locking structure includes an electric push rod and a lock hole, the electric push rod is installed inside the mounting groove, a locking rod is fixedly installed at the telescopic end of the electric push rod, the lock hole is opened on the outer wall of the support rod, and the locking rod matches the lock hole.

[0012] In one alternative: a ball bearing is installed at the bottom of the rotating groove, the ball bearing is rotatably mounted on the bottom of the base block, and a connecting block is fixedly connected to the upper end of the base block.

[0013] In one alternative: the coupling is a flexible coupling.

[0014] In one alternative: a bearing is embedded inside the through hole, and the rotating shaft is inserted and fixed to the inner ring of the bearing.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model effectively reduces noise and vibration generated during operation by using the damping effect of damping springs and dampers, as well as the buffering effect of flexible couplings. This not only improves the working environment of operators, but also reduces the interference of equipment on the surrounding environment.

[0016] 2. This utility model enables the two rear molds at the top of the turntable to be quickly switched through a rotating structure. After the turntable has rotated, a locking structure is used to lock the turntable, preventing it from moving or rotating accidentally when not subjected to external force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the rotating structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the shock absorption structure and locking structure of this utility model.

[0021] Figure reference numerals: 11. Base; 12. Turntable; 13. Rear mold; 14. Front mold; 15. Front mold fixing plate; 16. Rotating motor; 17. Main gear; 18. Rotating shaft; 19. Driven gear; 20. Bearing; 21. Coupling; 22. Rotating groove; 23. Mounting groove; 24. Electric push rod; 25. Locking rod; 26. Support rod; 27. Locking hole; 28. Spring groove; 29. ​​Damping spring; 30. Sliding limit block; 31. Connecting block; 32. Bottom block; 33. Ball bearing. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] In one embodiment, such as Figures 1-4 As shown, a two-color mold rotating device includes a base 11, a turntable 12, and a front mold fixing plate 15. Two rear molds 13 are symmetrically fixed at the upper end of the turntable 12, and two front molds 14 are symmetrically fixed at the lower end of the front mold fixing plate 15. The rear molds 13 and the front molds 14 are positioned corresponding to each other. The base 11 has a rotating groove 22 at its upper end, and a support rod 26 is fixedly installed at the bottom of the turntable 12. The support rod 26 is located inside the rotating groove 22, and a spring groove 28 is opened at the bottom of the support rod 26. A sliding limit block 30 is slidably installed inside the spring groove 28, and the sliding limit block 30 extends to the outside of the spring groove 28 and is fixedly connected to a connecting block 31. The inner wall of the rotating groove 22 is provided with an installation groove 23; It also includes a rotating structure, which is disposed in the inner cavity of the base 11 and is used to drive the turntable 12 to rotate; A shock-absorbing structure is provided inside the spring groove 28 to reduce noise; A locking structure is provided inside the mounting groove 23 and on the outer wall of the support rod 26 for locking the turntable 12.

[0024] In this embodiment, the rear mold 13 is first bonded to the front mold 14, and then the injection molding process can be carried out (the first color material is injected into the cavity of one of the rear molds 13, and no material is injected into the other rear mold 13), and then the rear mold 13 and the front mold 14 are separated. Then, the turntable 12 is rotated by the rotating structure, thereby exchanging the positions of the two rear molds 13; During the rotation of turntable 12, the damping structure in spring groove 28 can absorb some vibration and impact, reducing the impact of noise and vibration on the mold; After rotation is complete, the turntable 12 is locked by the locking structure; Then, continue to close the rear mold 13 with the front mold 14 and start injection molding. Inject the material of the second color into the cavity of the rear mold 13, and inject the material of the first color into the other rear mold 14, and so on.

[0025] In one embodiment, such as Figure 2 — Figure 3 As shown, the rotating structure includes a rotating shaft 18, which is rotatably mounted in the inner cavity of the base 11. A driven gear 19 is fixedly mounted on the outer wall of the rotating shaft 18. The driven gear 19 meshes with and connects to a drive assembly. The drive assembly is mounted in the inner cavity of the base 11. A through hole is provided at the upper end of the base 11. The upper end of the rotating shaft 18 extends through the through hole to the upper end of the base 11 and is fixedly mounted with a coupling 21. The upper end of the coupling 21 is fixedly connected to the middle position of the bottom end of the turntable 12.

[0026] Gear 19 is fixedly mounted on the outer wall of rotating shaft 18 and meshes with gears in the drive assembly, thereby transmitting power from the drive assembly to rotating shaft 18. Coupling 21 is fixedly connected at its upper end to the middle of the bottom end of turntable 12 and at its lower end to the upper end of rotating shaft 18. It serves to connect rotating shaft 18 and turntable 12, transmitting the rotational motion of rotating shaft 18 to turntable 12.

[0027] In one embodiment, such as Figure 2 — Figure 3 As shown, the drive assembly includes a rotary motor 16, which is installed in the inner cavity of the base 11. The output end of the rotary motor 16 is fixedly connected to the main gear 17, and the main gear 17 is meshed with the driven gear 19.

[0028] The drive assembly is powered by the rotating motor 16, and the power is transmitted to the turntable 12 through the meshing of the main gear 17 and the driven gear 19, so as to realize its rotational movement.

[0029] In one embodiment, such as Figure 4As shown, the damping structure includes a damping spring 29, which is installed inside a spring groove 28. A damper is sleeved inside the damping spring 29. The upper end of the damping spring 29 and the damper are fixedly connected to the top of the spring groove 28. The lower end of the damping spring 29 and the damper are fixedly connected to a sliding limit block 30.

[0030] The damping spring 29 and the damper together constitute an effective vibration reduction system. When the turntable 12 or the shaft 18 is subjected to impact or vibration during rotation, the damping spring 29 can absorb and mitigate these impacts and vibrations through its elastic deformation, thereby protecting the mold from damage. The vibration reduction structure makes the turntable 12 more stable during rotation by reducing vibration and impact. This helps improve the stability and accuracy of the two-color mold injection process, ensures the quality of the injection molded parts, and reduces the noise generated by the mold during operation, improving the working environment.

[0031] In one embodiment, such as Figure 2 — Figure 4 As shown, the locking structure includes an electric push rod 24 and a lock hole 27. The electric push rod 24 is installed inside the mounting groove 23. A locking rod 25 is fixedly installed at the telescopic end of the electric push rod 24. The lock hole 27 is opened on the outer wall of the support rod 26. The locking rod 25 matches the lock hole 27.

[0032] When it is necessary to lock the turntable 12, the electric push rod 24 drives the locking rod 25 to extend and insert into the locking hole 27 on the outer wall of the support rod 26. The matching of the locking rod 25 and the locking hole 27 realizes the locking of the turntable 12, preventing it from moving or rotating accidentally when not subjected to external force.

[0033] In one embodiment, such as Figure 4 As shown, a ball bearing 33 is installed at the bottom of the rotating groove 22. The ball bearing 33 is rotatably installed at the bottom of the base block 32. A connecting block 31 is fixedly connected to the upper end of the base block 32.

[0034] A ball bearing 33 is rotatably mounted on the bottom of the base block 32. The ball bearing 33 is rolled in the bottom of the rotating groove 22, thereby ensuring the stability of the turntable 12 during rotation. In one embodiment, such as Figure 2 — Figure 3 As shown, the coupling 21 is a flexible coupling.

[0035] Flexible couplings can effectively absorb and mitigate vibrations and impacts generated during rotation through their internal elastic elements, thereby reducing damage to the mold and improving the stability of the injection molding process.

[0036] In one embodiment, such as Figure 2 — Figure 3As shown, a bearing 20 is embedded inside the through hole, and the rotating shaft 18 is inserted and fixed to the inner ring of the bearing 20.

[0037] Due to the low friction characteristics of bearing 20, shaft 18 can maintain high stability during rotation. This stability helps to reduce noise and vibration transmission caused by vibration and impact, and improve the overall operating quality of the mold.

[0038] The above embodiment discloses a two-color mold rotating device, wherein the rear mold 13 is first attached to the front mold 14, and then the injection molding operation can be carried out (the first color material is injected into the cavity of one of the rear molds 13, and no material is injected into the other rear mold 13), and the rear mold 13 and the front mold 14 are separated. Then, the rotating motor 16 is started, which drives the main gear 17 to rotate.

[0039] The main gear 17 meshes with the driven gear 19, transmitting power to the rotating shaft 18.

[0040] The rotating shaft 18 drives the turntable 12 to rotate through the coupling 21, thereby realizing the position swapping of the two rear molds 13.

[0041] During rotation, the damping spring 29 and damper in the shock absorption structure absorb and mitigate the vibration and impact generated by rotation, reducing the impact of noise and vibration on the mold.

[0042] Once turntable 12 rotates to the designated position, the locking mechanism is activated.

[0043] The electric push rod 24 drives the locking rod 25 to extend, and the locking rod 25 is inserted into the locking hole 27 on the outer wall of the support rod 26 to lock the turntable 12.

[0044] Once locked, the turntable 12 will not move or rotate unexpectedly when not subjected to external force.

[0045] The rear mold 13 and the front mold 14 are then joined together again.

[0046] Injection molding begins, with the second color material being injected into the cavity of the rear mold 13, while the remaining first color material from the first round is injected into the other rear mold 14.

[0047] Repeat the above process to achieve two-color injection molding.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A two-color mold rotating device, comprising a base (11), a turntable (12), and a front mold fixing plate (15); Its features are, The turntable (12) has two rear molds (13) symmetrically fixed at its upper end, and the front mold fixing plate (15) has two front molds (14) symmetrically fixed at its lower end. The rear molds (13) and the front molds (14) are positioned opposite each other. The base (11) has a rotating groove (22) at its upper end. A support rod (26) is fixedly installed at the bottom of the turntable (12). The support rod (26) is located inside the rotating groove (22). A spring groove (28) is opened at the bottom of the support rod (26). A sliding limit block (30) is slidably installed inside the spring groove (28). The sliding limit block (30) extends to the outside of the spring groove (28) and is fixedly connected to a connecting block (31). The inner wall of the rotating groove (22) is provided with an installation groove (23); It also includes a rotating structure, which is disposed in the inner cavity of the base (11) for driving the turntable (12) to rotate; A shock-absorbing structure is provided inside the spring groove (28) to reduce noise; A locking structure is provided inside the mounting groove (23) and on the outer wall of the support rod (26) for locking the turntable (12).

2. The two-color mold rotating device according to claim 1, characterized in that, The rotating structure includes a rotating shaft (18), which is rotatably installed in the inner cavity of the base (11). A driven gear (19) is fixedly installed on the outer wall of the rotating shaft (18). The driven gear (19) meshes with and connects to a drive assembly. The drive assembly is installed in the inner cavity of the base (11). A through hole is provided at the upper end of the base (11). The upper end of the rotating shaft (18) extends through the through hole to the upper end of the base (11) where a coupling (21) is fixedly installed. The upper end of the coupling (21) is fixedly connected to the middle position of the bottom end of the turntable (12).

3. The two-color mold rotating device according to claim 2, characterized in that, The drive assembly includes a rotary motor (16), which is installed in the inner cavity of the base (11). The output end of the rotary motor (16) is fixedly connected to the main gear (17), and the main gear (17) meshes with the driven gear (19).

4. The two-color mold rotating device according to claim 1, characterized in that, The damping structure includes a damping spring (29), which is installed inside a spring groove (28). A damper is fitted inside the damping spring (29). The upper end of the damping spring (29) and the damper are fixedly connected to the top of the spring groove (28). The lower end of the damping spring (29) and the damper are fixedly connected to a sliding limit block (30).

5. The two-color mold rotating device according to claim 1, characterized in that, The locking structure includes an electric push rod (24) and a lock hole (27). The electric push rod (24) is installed inside the mounting groove (23). A locking rod (25) is fixedly installed at the telescopic end of the electric push rod (24). The lock hole (27) is opened on the outer wall of the support rod (26). The locking rod (25) matches the lock hole (27).

6. The two-color mold rotating device according to claim 1, characterized in that, A ball bearing (33) is installed at the bottom of the rotating groove (22). The ball bearing (33) is rotatably installed at the bottom of the base block (32). A connecting block (31) is fixedly connected to the upper end of the base block (32).

7. A two-color mold rotating device according to claim 2, characterized in that, The coupling (21) is a flexible coupling.

8. A two-color mold rotating device according to claim 2, characterized in that, The bearing (20) is embedded inside the through hole, and the rotating shaft (18) is inserted and fixed to the inner ring of the bearing (20).

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