Inverted rotary double-color mold for secondary molding

Abstract

The utility model relates to the technical field of two-color molds, in particular to a two-time forming inverted rotating two-color mold which comprises a left mold frame and a right mold frame, a rotating disc is arranged on the inner side of the left mold frame, a motor for driving the rotating disc to rotate is arranged on the outer side of the left mold frame, a movable mold is driven on the outer side of the rotating disc through a hydraulic cylinder, and the movable mold is arranged on the right mold frame. A fixed mold corresponding to the movable mold in position is mounted on the inner side of the right mold frame, transverse battens are arranged at the front end and the rear end of the right mold frame, air cylinders are arranged on the outer sides of the outer ends of the transverse battens, and pressing blocks driven by the air cylinders are arranged on the inner sides of the outer ends of the transverse battens. According to the two-time forming inverted rotating double-color mold, dynamic supporting and accurate positioning control can be conducted on a product in the inverted rotating state, slight displacement or deformation of the product is effectively prevented, and the forming precision and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-color molds, in particular to a secondary molding inverted rotating double-color mold. Background Art

[0002] Two-color mold is a special plastic injection molding technology that can inject two different colors or different materials of plastic into the same mold in a single molding cycle, and mold them twice, so as to produce a plastic product with two material characteristics. This technology is widely used in fields with special requirements for product appearance, feel or function, such as automotive interior parts, home appliance panels, electronic product housings, toys, tool handles, etc.

[0003] At present, in the injection molding process of two-color molds, inverted rotation is one of the key steps to achieve the molding of complex product structures. However, in the prior art, after the inverted rotation operation is performed, that is, the first material is injected and initially cooled and formed, and before the second material is ready to be injected, the product lacks effective dynamic support and precise positioning control. During this process, due to factors such as gravity, mechanical vibration or material shrinkage, the product is prone to slight displacement or deformation, resulting in misalignment of the interface between the two materials, thereby affecting the accuracy of the secondary molding and the qualified rate of the final product. Utility Model Content

[0004] The purpose of the utility model is to provide a secondary molding inverted rotating two-color mold to solve the problem raised by the above-mentioned background technology that the product currently lacks effective support and precise positioning in the inverted rotating process of the two-color mold, resulting in easy displacement and deformation during the rotation process, thereby affecting the precise combination of the two materials and the quality of the finished product, and increasing the risk of non-conformity.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a secondary molding inverted rotating two-color mold, comprising a left mold frame and a right mold frame, a rotating disk is provided on the inner side of the left mold frame, a motor for driving the rotating disk to rotate is provided on the outer side of the left mold frame, and a movable mold is driven on the outer side of the rotating disk by a hydraulic cylinder, a fixed mold corresponding to the position of the movable mold is installed on the inner side of the right mold frame, and horizontal strips are provided at both front and rear ends of the right mold frame, a cylinder is provided on the outer side of the outer end of the horizontal strip, a clamping block driven by the cylinder is provided on the inner side of the outer end of the horizontal strip, and a positioning rod is provided on one side of the edge of the rotating disk and horizontally penetrates the left mold frame, and an annular through groove matching the positioning rod structure is provided on the left mold frame.

[0006] Preferably, the pressing block is a rectangular block structure, and a silicone pad is bonded and fixed to the surface of the pressing block.

[0007] Preferably, both the front and rear sides of the right mold frame are provided with convex columns, and one end of the horizontal strip is provided with a fixing sleeve which is sleeved on the outside of the convex column, and the outer side of the fixing sleeve is connected with a locking bolt through a threaded structure.

[0008] Preferably, the outer side of the left mold frame is provided with a convex ring surrounding the outside of the annular groove, and the outer end of the positioning rod is inserted with a fixing screw through a threaded structure, and the inner wall of the convex ring is surrounded by a plurality of threaded holes that match the fixing screw structure at the outer end of the positioning rod.

[0009] Preferably, an annular slider is provided on the back side of the rotating disk, and an annular sliding groove matching with the annular slider structure is provided on the inner side of the left mold frame.

[0010] Preferably, the transverse strips are centrally distributed on the front and rear sides of the right mold frame and their positions are corresponding.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the inverted rotating two-color mold for secondary molding can dynamically support and precisely position the product in an inverted rotating state, effectively preventing the product from being slightly displaced or deformed, and improving molding accuracy and product quality. The inverted rotating two-color mold for secondary molding is provided with a rotating disk on the left mold frame, and the hydraulic cylinder on the rotating disk can be driven to make the movable mold move laterally and close the mold with the fixed mold, and the rotating disk can also be driven by the motor to quickly invert and rotate the movable mold and the fixed mold, and the horizontal strips provided at the front and rear ends of the right mold frame can be driven by the cylinder to drive the clamping block to press against the closing part of the movable mold and the fixed mold to achieve a stable clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a reverse rotating two-color mold for secondary molding of the utility model;

[0013] Figure 2 It is a schematic diagram of the top view of the structure of the connection between the horizontal strip plate and the right mold frame of a secondary molding inverted rotating two-color mold of the utility model;

[0014] Figure 3 The utility model is a schematic diagram of the outer structure of the left mold frame of a secondary molding inverted rotating two-color mold.

[0015] In the figure: 1. left mold frame; 2. rotating plate; 3. movable mold; 4. fixed mold; 5. right mold frame; 6. annular slider; 7. motor; 8. positioning rod; 9. annular groove; 10. convex ring; 11. horizontal strip; 12. cylinder; 13. convex column; 14. fixing sleeve; 15. clamping block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3The utility model provides a technical solution: a two-stage inverted rotary two-color mold, comprising a left mold frame 1 and a right mold frame 5, the bottom ends of the left mold frame 1 and the right mold frame 5 are welded and fixed with a bottom plate, and a reinforcing plate is welded and fixed between the tops of the left mold frame 1 and the right mold frame 5, a rotating disk 2 is arranged on the inner side of the left mold frame 1, and a motor 7 for driving the rotating disk 2 to rotate is arranged on the outer side of the left mold frame 1, the output end of the motor 7 penetrates the inner side of the left mold frame 1 and is connected to the center of the back side of the rotating disk 2, and a movable mold 3 is driven on the outer side of the rotating disk 2 by a hydraulic cylinder, a fixed mold 4 corresponding to the position of the movable mold 3 is installed on the inner side of the right mold frame 5 through a rotating seat, and a horizontal strip plate 11 is arranged on the front and rear ends of the right mold frame 5, and a cylinder 12 is fixedly installed on the outer side of the outer end of the horizontal strip plate 11 by bolts, and the horizontal strip plate 11 is fixed to the outer side of the outer end of the cylinder 12, and the horizontal strip plate 11 is fixed to the outer side of the outer end of the cylinder 12 by bolts. A clamping block 15 driven by a cylinder 12 is provided on the inner side of the outer end of the plate 11, and the output end of the cylinder 12 penetrates the inner side of the outer end of the horizontal strip plate 11 and is fixedly connected to the clamping block 15, and a positioning rod 8 is provided on one side of the edge of the rotating disk 2 and passes through the left mold frame 1 horizontally. The connection between the positioning rod 8 and the rotating disk 2 can be welded and fixed. An annular through groove 9 matching the positioning rod 8 structure is provided on the left mold frame 1. The left mold frame 1 of this structure can be driven by the hydraulic cylinder on the rotating disk 2 to drive the movable mold 3 to be pushed laterally to close the mold with the fixed mold 4 for injection molding, and the motor 7 can drive the rotating disk 2 to rotate so that the movable mold 3 and the fixed mold 4 are inverted and rotated until the movable mold 3 and the fixed mold 4 are inverted and rotated to a suitable angle position. The cylinder 12 can be driven by the hydraulic cylinder on the horizontal strip plate 2 to drive the movable mold 3 to be pushed laterally to close the mold with the fixed mold 4 for injection molding, and the motor 7 can drive the rotating disk 2 to rotate so that the movable mold 3 and the fixed mold 4 are inverted and rotated until the movable mold 3 and the fixed mold 4 are inverted and rotated to a suitable angle position. The outer end of the plate 11 drives the clamping block 15 to press against the mold joint of the movable mold 3 and the fixed mold 4 to achieve a stable clamping effect, and when the rotating disk 2 rotates, it will also drive the positioning rod 8 to move in the annular groove 9. The positioning rod 8 can be fixed by limiting and can also stabilize the position of the rotating disk 2, so that the mold can be dynamically supported and accurately positioned in the inverted rotating state, effectively preventing the product from being slightly shifted or deformed, significantly improving the product stability of the inverted rotation link in injection molding, reducing the deviation and scrap rate in the molding process, and improving production efficiency and product quality. The clamping block 15 is a rectangular block structure, and a silicone pad is bonded and fixed to the surface of the clamping block 15. The clamping block 15 of this structure can play a role in pressing the movable mold 3 and the fixed mold 4 through the silicone pad. The right mold frame 5 has a buffering effect to absorb the impact force of the movable mold 3 and the fixed mold 4 during the molding process, and increases the adaptability of the supporting surface. Even if there are slight differences in the mold surface shape, good contact can be guaranteed to improve the overall stability and molding quality. The front and rear sides of the right mold frame 5 are welded and fixed with protruding columns 13, and one end of the horizontal strip 11 is welded and fixed with a fixing sleeve 14 sleeved on the outside of the protruding column 13, and the outside of the fixing sleeve 14 is connected with a locking bolt through a threaded structure. The horizontal strip 11 of this structure can be slid to different positions on the outside of the protruding column 13 through the fixing sleeve 14 and tightened with the locking bolt, so that the horizontal strip 11 can be adjusted to a more suitable position on the front and rear sides of the right mold frame 5 to prevent the clamping block 15 from affecting the movable mold 3 and the fixed mold 4 when they are inverted and rotated.The outer side of the left mold frame 1 is provided with a convex ring 10 surrounding the outside of the annular groove 9, and the outer end of the positioning rod 8 is inserted with a fixing screw through a threaded structure, and a plurality of threaded holes that match the fixing screw structure at the outer end of the positioning rod 8 are arranged around the inner wall of the convex ring 10. When the positioning rod 8 of this structure moves to a suitable position in the annular groove 9, the fixing screw at the outer end of the positioning rod 8 can be fixed in the corresponding threaded hole on the inner wall of the convex ring 10, so as to limit and fix the positioning rod 8 so that the position of the rotating disk 2 is locked. An annular slider 6 is welded on the back side of the rotating disk 2, and an annular slide groove that matches the structure of the annular slider 6 is provided on the inner side of the left mold frame 1. When the rotating disk 2 of this structure rotates, the annular slider 6 will synchronously drive the annular slider 6 to slide in the annular slide groove on the inner side of the left mold frame 1, which is conducive to improving the stability of the rotating disk 2 during rotation. The cross strips 11 are centrally distributed on the front and rear sides of the right mold frame 5 and the positions are corresponding. The cross strips 11 of this structure can ensure the effect of the cylinder 12 and the clamping block 15 cooperating with each other to stabilize the mold as a whole. ,

[0018] Working principle: When using the inverted rotating two-color mold for secondary molding, first when the movable mold 3 and the fixed mold 4 need to be molded together to inject the first material, start the hydraulic cylinder on the rotating disk 2. When the hydraulic cylinder on the rotating disk 2 is driven, it will drive the movable mold 3 to move horizontally until it is molded together with the fixed mold 4 for the first injection molding process. Then start the motor 7. When the motor 7 is driven, it will drive the rotating disk 2 to rotate so that the movable mold 3 and the fixed mold 4 are inverted and rotated. When the rotating disk 2 rotates, it will synchronously drive the annular slider 6 to slide in the annular groove on the inner side of the left mold frame 1, and when the rotating disk 2 rotates, it will also drive the positioning rod 8 to move in the annular groove 9. The movable mold 3 and the fixed mold 4 are moved until they are inverted and rotated to a suitable angle, and the fixing screw at the outer end of the positioning rod 8 is fixed in the corresponding threaded hole on the inner wall of the convex ring 10 to limit and fix the positioning rod 8. At this time, the position of the rotating disk 2 will be locked and firmly locked. At the same time, the cylinder 12 is started at the outer end of the horizontal strip plate 11. When the cylinder 12 is driven, it will drive the clamping block 15 to press against the mold joint of the movable mold 3 and the fixed mold 4 to achieve a stable clamping effect. In this way, the movable mold 3 and the fixed mold 4 will not easily shift or deform slightly during the secondary injection molding in the inverted rotating state, thereby completing a series of work.

[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A secondary molding inverted rotating two-color mold, comprising a left mold frame (1) and a right mold frame (5), characterized in that: A rotating disk (2) is provided on the inner side of the left mold frame (1), a motor (7) for driving the rotating disk (2) to rotate is provided on the outer side of the left mold frame (1), and a movable mold (3) is driven on the outer side of the rotating disk (2) by a hydraulic cylinder, a fixed mold (4) corresponding to the position of the movable mold (3) is installed on the inner side of the right mold frame (5), and a horizontal strip plate (11) is provided at both the front and rear ends of the right mold frame (5), a cylinder (12) is provided on the outer side of the outer end of the horizontal strip plate (11), and a clamping block (15) driven by the cylinder (12) is provided on the inner side of the outer end of the horizontal strip plate (11), and a positioning rod (8) is provided on one side of the edge of the rotating disk (2) and runs through the left mold frame (1) in a transverse direction, and an annular through groove (9) matching the positioning rod (8) structure is provided on the left mold frame (1).

2. The inverted rotating two-color mold for secondary molding according to claim 1, characterized in that: The pressing block (15) is a rectangular block structure, and a silicone pad is bonded and fixed to the surface of the pressing block (15).

3. The inverted rotating two-color mold for secondary molding according to claim 1, characterized in that: The right mold frame (5) is provided with convex columns (13) on both the front and rear sides, and one end of the horizontal strip plate (11) is provided with a fixing sleeve (14) sleeved on the outside of the convex column (13), and the outer side of the fixing sleeve (14) is connected to a locking bolt via a threaded structure.

4. The inverted rotating two-color mold for secondary molding according to claim 1, characterized in that: The outer side of the left mold frame (1) is provided with a convex ring (10) surrounding the outside of the annular through groove (9), and the outer end of the positioning rod (8) is inserted with a fixing screw through a threaded structure, and the inner wall of the convex ring (10) is surrounded by a plurality of threaded holes that match the fixing screw structure at the outer end of the positioning rod (8).

5. The inverted rotating two-color mold for secondary molding according to claim 1, characterized in that: An annular sliding block (6) is provided on the back side of the rotating disk (2), and an annular sliding groove matching the structure of the annular sliding block (6) is provided on the inner side of the left mold frame (1).

6. The inverted rotating two-color mold for secondary molding according to claim 1, characterized in that: The transverse strips (11) are centrally distributed on the front and rear sides of the right mold frame (5) and their positions are corresponding.

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