BMC injection mold convenient to demold

Abstract

The utility model relates to the technical field of demolding, and discloses a BMC injection mold convenient to demold, which comprises a base, a driving assembly is arranged at the bottom of the base, a base is fixedly connected to the top of the driving assembly, a plurality of fixing blocks are fixedly connected to the top of the base, two fixing rings are fixedly connected to the tops of the fixing blocks, and the fixing rings are fixedly connected to the tops of the fixing blocks. And the interiors of the two fixing rings are rotationally connected with a rotating shaft, the exterior of the rotating shaft is fixedly connected with a follower plate, the exterior of the rotating shaft is fixedly connected with a top plate, the top of the base is fixedly connected with a shell, and the top of the shell is fixedly connected with a lower mold. In the use process of the device, secondary ejection can be achieved, an object is ejected out while a cover is opened, automatic falling-back of the upper mold is achieved, and the problems that a model adheres to the upper mold and the lower mold, and the safety of a manual closing device is not high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding, in particular to a BMC injection mold with convenient demoulding. Background Art

[0002] BMC injection molds are used to manufacture injection-molded parts. BMC is a thermosetting composite material typically composed of glass fiber, fillers, thermosetting resins, and other additives. BMC's excellent insulation properties, high-temperature resistance, and chemical stability make it widely used in the manufacture of parts for the automotive, electrical, electronics, construction, and other industries. BMC injection molds are used to heat the BMC material to its fluid state before injecting it into the mold cavity. After cooling and solidification, the part is removed from the mold. These molds are typically made of heat-resistant metal alloys, as BMC manufacturing requires high temperatures and high pressures.

[0003] At present, some devices easily cause the manufactured model to stick to the upper and lower molds during the demoulding process, causing the model to often deform and suffer minor damage during the demoulding process, reducing production efficiency and yield. Utility Model Content

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a BMC injection mold that is easy to demould, aiming to improve the problems of deformation and minor damage caused during the demoulding process in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A BMC injection mold with convenient demoulding comprises a base, a driving assembly is provided at the bottom of the base, a base is fixedly connected to the top of the driving assembly, a plurality of fixed blocks are fixedly connected to the top of the base, two fixed rings are fixedly connected to the top of the fixed blocks, a rotating shaft is rotatably connected to the inside of the two fixed rings, a follower plate is fixedly connected to the outside of the rotating shaft, a top plate is fixedly connected to the outside of the rotating shaft, a shell is fixedly connected to the top of the base, a lower mold is fixedly connected to the top of the shell, an upper mold is slidably connected to the inside of the lower mold, a rebound assembly is provided at the bottom of the upper mold, a circular plate is fixedly connected to the bottom of the rebound assembly, and a plurality of ejector rods are fixedly connected to the top of the circular plate;

[0007] Furthermore, a plurality of fixing columns are fixedly connected to the top of the lower mold, a limit plate is fixedly connected to the top of the plurality of fixing columns, and two injection molding tubes are fixedly connected to the interior of the limit plate;

[0008] Furthermore, the driving assembly includes a hydraulic cylinder, the output end of which passes through the interior of the base and is fixedly connected to the bottom of the base;

[0009] Furthermore, the rebound assembly includes a spring, a sleeve, and a sliding rod, wherein the top of the sleeve is fixedly connected to the bottom of the upper mold, the outside of the sliding rod is slidably connected to the inner wall of the sleeve, and the spring is arranged inside the sleeve;

[0010] Furthermore, one end of the spring is fixedly connected to the inner wall of the sleeve, and the other end of the spring is fixedly connected to the outside of the slide rod;

[0011] Furthermore, the circular plate is in contact with the plurality of follower plates, and the exteriors of the plurality of top plates are in contact with the top of the inner wall of the housing;

[0012] Further, the top of the base contacts the bottom of the base;

[0013] Furthermore, the lower mold is provided with a plurality of holes.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, with the coordinated use of structures such as the fixed block, the fixed ring, the rotating shaft, and the follower plate, the device can realize secondary ejection during use, ejecting the object while opening the cover, thus solving the problem of the model sticking to the upper and lower molds.

[0016] 2. In the present invention, with the coordinated use of the sleeve, slide rod, spring, limit plate and other structures, the upper mold can be automatically dropped back during use, solving the problem of low safety of manual closing of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a BMC injection mold that is easy to demould proposed by the present invention;

[0018] Figure 2 This is a cross-sectional view of the shell structure of a BMC injection mold that is easy to demould, as proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of a fixing ring for a BMC injection mold that facilitates demoulding, as proposed by the present invention;

[0020] Figure 4 This is a cross-sectional view of the sleeve structure of a BMC injection mold that is convenient for demoulding proposed by the utility model.

[0021] Legend:

[0022] 1. Base; 2. Hydraulic cylinder; 3. Base; 4. Fixed block; 5. Fixed ring; 6. Rotating shaft; 7. Follower plate; 8. Top plate; 9. Housing; 10. Lower mold; 11. Fixed column; 12. Limit plate; 13. Injection tube; 14. Upper mold; 15. Sleeve; 16. Slide rod; 17. Round plate; 18. Ejector rod; 19. Hole; 20. Spring. DETAILED DESCRIPTION

[0023] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1-3 The utility model provides an embodiment: a BMC injection mold with convenient demolding, comprising a base 1, a driving assembly is provided at the bottom of the base 1, which provides demolding power for the device, and the driving assembly comprises a hydraulic cylinder 2 as a power source, the output end of the hydraulic cylinder 2 passes through the interior of the base 1 and is fixedly connected to the bottom of the base 3, the top of the driving assembly is fixedly connected to the base 3, the top of the base 3 is fixedly connected to a plurality of fixed blocks 4, the top of the fixed block 4 is fixedly connected to two fixed rings 5 for limiting displacement, the internal rotation of the two fixed rings 5 is connected to a rotating shaft 6, the external fixed connection of the rotating shaft 6 is connected to a follower plate 7, the external fixed connection of the rotating shaft 6 is connected to a top plate 8, the purpose is to achieve secondary ejection of the device through the principle of leverage, the top of the base 1 is fixedly connected to a shell 9, the top of the shell 9 is fixedly connected to a lower mold 10, the internal sliding connection of the lower mold 10 is connected to an upper mold 14, providing space for injection.

[0025] like Figure 2 and Figure 4 As shown: A rebound component is provided at the bottom of the upper mold 14 to provide the function of automatic return of part of the structure. The rebound component includes a spring 20, a sleeve 15, and a slide rod 16. The top of the sleeve 15 is fixedly connected to the bottom of the upper mold 14, and the outside of the slide rod 16 is slidably connected to the inner wall of the sleeve 15. The spring 20 is arranged inside the sleeve 15 to provide power for the structures at both ends. The bottom of the rebound component is fixedly connected to a circular plate 17, and the top of the circular plate 17 is fixedly connected to multiple ejector rods 18. The lower mold 10 is provided with multiple holes 19.

[0026] like Figure 2 As shown: the top of the lower mold 10 is fixedly connected with multiple fixing columns 11, the tops of the multiple fixing columns 11 are fixedly connected with a limiting plate 12, and the interior of the limiting plate 12 is fixedly connected with two injection tubes 13 to provide an injection channel for injection molding.

[0027] Compared with some existing technologies, the above content enables the device to realize secondary ejection during use, ejecting the object while opening the cover, and realize the automatic return of the upper mold, solving the problems of the model sticking to the upper and lower molds and the low safety of manually closing the device.

[0028] Working principle: First, the staff passes the injection molding raw material into the space formed by the upper mold 14 and the lower mold 10 through the injection molding tube 13, and the internal raw material is formed through a series of processing operations. After forming, the hydraulic cylinder 2 is started so that the output end drives the base 3 to rise upward. In the process of rising, because multiple follower plates 7 will first hit the bottom of the circular plate 17 and drive the circular plate 17 to move upward, then multiple top plates 8 will hit the internal protrusion of the outer shell 9, causing the follower plates 7 and the top plates 8 to rotate around the rotating shaft 6. Because at this time the upper mold 14 has hit the top limit plate 12 driven by the sleeve 15 and the slide rod 16, the secondary ejection of the follower plate 7 will lift the circular plate 17 again. In the process of lifting, multiple ejector rods 18 push the material out along the hole 19, and after the worker takes it away, the hydraulic cylinder 2 is closed so that the upper mold 14 falls back to its original position.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A BMC injection mold with convenient demoulding, comprising a base (1), characterized in that: The bottom of the base (1) is provided with a driving assembly, the top of the driving assembly is fixedly connected to a base (3), the top of the base (3) is fixedly connected to a plurality of fixed blocks (4), the top of the fixed block (4) is fixedly connected to two fixed rings (5), the inside of the two fixed rings (5) is rotatably connected to a rotating shaft (6), the outside of the rotating shaft (6) is fixedly connected to a follower plate (7), the outside of the rotating shaft (6) is fixedly connected to a top plate (8), the top of the base (1) is fixedly connected to a shell (9), the top of the shell (9) is fixedly connected to a lower mold (10), the inside of the lower mold (10) is slidably connected to an upper mold (14), the bottom of the upper mold (14) is provided with a rebound assembly, the bottom of the rebound assembly is fixedly connected to a circular plate (17), and the top of the circular plate (17) is fixedly connected to a plurality of ejector rods (18).

2. The BMC injection mold with easy demoulding according to claim 1, characterized in that: The top of the lower mold (10) is fixedly connected to a plurality of fixing columns (11), the tops of the plurality of fixing columns (11) are fixedly connected to a limiting plate (12), and the interior of the limiting plate (12) is fixedly connected to two injection molding tubes (13).

3. The BMC injection mold with easy demoulding according to claim 1, characterized in that: The driving assembly comprises a hydraulic cylinder (2), the output end of the hydraulic cylinder (2) passing through the interior of the base (1) and fixedly connected to the bottom of the base (3).

4. The BMC injection mold with easy demoulding according to claim 1, characterized in that: The rebound assembly includes a spring (20), a sleeve (15), and a slide rod (16). The top of the sleeve (15) is fixedly connected to the bottom of the upper mold (14), the outside of the slide rod (16) is slidably connected to the inner wall of the sleeve (15), and the spring (20) is arranged inside the sleeve (15).

5. The BMC injection mold with easy demoulding according to claim 4, characterized in that: One end of the spring (20) is fixedly connected to the inner wall of the sleeve (15), and the other end of the spring (20) is fixedly connected to the outside of the slide rod (16).

6. The BMC injection mold with easy demoulding according to claim 1, characterized in that: The circular plate (17) is in contact with the plurality of follower plates (7), and the exteriors of the plurality of top plates (8) are in contact with the top of the inner wall of the outer shell (9).

7. The BMC injection mold with easy demoulding according to claim 1, characterized in that: The top of the base (1) contacts the bottom of the seat (3).

8. The BMC injection mold with easy demoulding according to claim 1, characterized in that: The lower mold (10) is provided with a plurality of holes (19).

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