Mold sprue bush structure
By improving the mold gate sleeve structure, the nozzle head is engaged in the positioning part, eliminating the conical opening design, thus solving the problem of material residue and achieving the effect of no material residue demolding and reduced recycling costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-03-20
AI Technical Summary
The existing mold gate sleeve structure is prone to producing sprue head inside the conical opening after injection molding. The sprue head is easy to break and remain during demolding, resulting in resource waste and increased recycling costs.
A mold gate sleeve structure was designed, including a hollow cylindrical body and an installation head. The nozzle head is engaged in the positioning part. The conical opening design is eliminated. A cover plate and limiting ring structure are adopted to ensure that the nozzle is flush with the cover plate and to avoid the generation of material head.
After the workpiece is demolded, there is no need to cut the material head, which reduces the use of raw materials, lowers recycling costs and energy consumption, and improves processing efficiency.
Smart Images
Figure CN224012875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of molds, specifically to a mold gate sleeve structure. Background Technology
[0002] Thixotropic molding is an advanced molding technology based on the thixotropic properties of materials, primarily used for processing metal alloys and polymers. In this process, the molding die is often equipped with a sprue bushing to ensure the material smoothly enters the mold from the injection unit; for example... Figures 1-3 As shown, this structure is a sprue sleeve structure in the prior art, which generally includes a main body and a mounting part. A conical opening is formed on the end face of the mounting part. After the nozzle extends into the main body, it communicates with the conical opening. After injection molding using this type of sprue sleeve, a high sprue head is easily generated in the conical opening. During demolding, the sprue head is easy to break and remain in the sprue sleeve. At the same time, the generated sprue head causes resource waste and increases recycling costs. Utility Model Content
[0003] The purpose of this invention is to provide a mold sprue sleeve structure that solves the problem that in the existing sprue sleeve structure, after injection molding, a high sprue head is easily generated in the conical opening. During demolding, the sprue head is prone to breakage and remains in the sprue sleeve, and the generated sprue head causes resource waste and increases recycling costs.
[0004] To achieve the above objectives, this utility model provides a mold gate sleeve structure, which includes a hollow cylindrical body, an installation head formed at the front end of the cylindrical body, a positioning element that cooperates with a nozzle inside the installation head, and a cover plate provided at the opening of the installation head.
[0005] The positioning element includes a cylindrical portion that engages within the mounting head, and a boss is formed at the front end of the cylindrical portion.
[0006] The cover plate has a groove formed on its surface that mates with the boss portion, and the boss portion engages within the groove.
[0007] Preferably, the cover plate is fastened to the end face of the mounting head by a screw assembly.
[0008] Preferably, the inner wall of the mounting head forms a limiting ring structure, so that the cover plate can press the positioning element tightly against the surface of the limiting ring structure.
[0009] Preferably, an anti-rotation keyway is formed inside the cylindrical body.
[0010] Preferably, a flange structure is formed at the rear end of the cylindrical body.
[0011] Beneficial effects: The utility model provides a mould sprue bush structure, mould sprue bush structure includes hollow cylindrical main part, the front end of cylindrical main part forms has installation head, the installation head in set up with the positioning piece that cooperates with nozzle, the opening of installation head is provided with the apron, the positioning piece includes the cylindrical portion that is clamped in the installation head, the front end of cylindrical portion forms has the boss portion, the apron surface forms has the notched that cooperates with boss portion, the boss portion is clamped in the notched, in prior art, sprue bush structure generally includes main part and installation part, the end face on installation part forms has the taper mouth, after the nozzle stretches into the main part and communicates with the taper mouth, after injection moulding, the material head will form in the taper mouth, when the workpiece demoulds, the material head is easy to break, and clamps in the taper mouth and causes the blockage, simultaneously, when batch production, more hoppers will cause the resource waste, and increase the cost of hopper recovery, the utility model discloses on the improvement of prior art sprue bush structure, after the nozzle stretches into the cylindrical main part, the nozzle head of it is clamped in the positioning piece, make the opening of positioning piece and the surface of apron flush, cancel the design of taper mouth, optimize the forward distance of nozzle, after the workpiece demoulds, will not produce the material head, need not carry out the cutting processing of subsequent material head, reduce the use of raw material, reduce the recovery material processing cost and energy consumption, improve the workpiece overall processing efficiency.
[0012] Other features and advantages of the present utility model will be described in detail in the following specific implementation mode part. BRIEF DESCRIPTION OF DRAWINGS
[0013] The accompanying drawings are included to provide a further understanding of the present utility model, and constitute a part of the specification, and are used together with the following specific implementation mode to explain the present utility model, but do not constitute the limitation to the present utility model.In the drawings:
[0014] Figure 1 It is the structure diagram of sprue bush in prior art;
[0015] Figure 2 It is the sectional view of sprue bush in prior art;
[0016] Figure 3 It is the installation schematic diagram of sprue bush and nozzle in prior art;
[0017] Figure 4 It is the overall structure diagram of sprue bush provided by the utility model;
[0018] Figure 5 It is the internal structure diagram of sprue bush provided by the utility model;
[0019] Figure 6 It is the split diagram of sprue bush provided by the utility model;
[0020] Figure 7It is the sectional view of the sprue bush provided by the utility model.
[0021] Mark explanation
[0022] 1-cover plate;2-groove;3-positioning part;4-mounting head;5-cylindrical body;6-flange plate structure;7-limit ring structure;8-anti-rotation key groove;9-tuberosity;10-mounting part;11-main body;12-tapered mouth;13-nozzle. Specific implementation
[0023] The specific implementation of the utility model is described in detail below in combination with the drawings.It should be understood that the specific implementation described herein is only used to illustrate and explain the utility model and is not used to limit the utility model.
[0024] As Figures 1-3 shown, the prior art sprue bush generally comprises a main body 11 and a mounting part 10, a tapered mouth 12 is formed on the end face of the mounting part 10, and a nozzle 13 is inserted into the main body 11 and communicates with the tapered mouth 12, after injection molding by using the sprue bush, a higher sprue is easily generated in the tapered mouth 12, the sprue is easily broken and remains in the sprue bush during demolding, meanwhile, the generated sprue causes resource waste and increases the recycling cost.As shown in 4-7: the utility model provides a mold sprue bush structure, the mold sprue bush structure comprises a hollow cylindrical body 5, a mounting head 4 is formed at the front end of the cylindrical body 5, a positioning part 3 matched with a nozzle is arranged in the mounting head 4, and a cover plate 1 is arranged at the opening of the mounting head 4; the positioning part 3 comprises a cylindrical part clamped in the mounting head 4, and a tuberosity 9 is formed at the front end of the cylindrical part; a groove 2 matched with the tuberosity 9 is formed on the surface of the cover plate 1, and the tuberosity 9 is clamped in the groove 2.The utility model improves the existing sprue bush structure, after the nozzle is inserted into the cylindrical body, the nozzle head is clamped in the positioning part, the opening of the positioning part is flush with the surface of the cover plate, the design of the tapered mouth is cancelled, the forward distance of the nozzle is optimized, no sprue is generated after the workpiece is demolded, subsequent cutting treatment of the sprue is not needed, the use of raw materials is reduced, the processing cost and energy consumption of recycled materials are reduced, and the overall processing efficiency of the workpiece is improved.
[0025] In a preferred embodiment of the utility model, in order to facilitate the installation and removal of the positioning part in the mounting head, the cover plate 1 is fastened on the end face of the mounting head 4 through a screw assembly.
[0026] In a preferred embodiment of the utility model, in order to press the positioning part in the inside of the mounting head by using the cover plate, a limit ring structure 7 is formed on the inner wall of the mounting head 4, so that the cover plate 1 can press the positioning part 3 against the surface of the limit ring structure 7.
[0027] In a preferred embodiment of the utility model, the cylindrical body 5 is formed with an anti-rotation key groove 8. After the nozzle extends into the cylindrical body, it can be at least partially engaged in the anti-rotation key groove, so that the nozzle can be effectively centered with the nozzle bushing, avoiding material overflow caused by deflection, and avoiding relative rotation between the nozzle bushing and the nozzle.
[0028] In a preferred embodiment of the utility model, in order to facilitate the installation and disassembly of the nozzle bushing structure, the rear end of the cylindrical body 5 is formed with a flange structure 6.
[0029] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the utility model within the technical concept of the utility model, and these simple modifications all belong to the protection scope of the utility model.
[0030] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the utility model will not further describe various possible combination manners.
[0031] In addition, various different embodiments of the utility model can also be combined in any manner, as long as they do not deviate from the concept of the utility model, and they should also be considered as disclosed content of the utility model.
Claims
1. A mold gate sleeve structure, characterized in that, The mold gate sleeve structure includes a hollow cylindrical body (5), with an installation head (4) formed at the front end of the cylindrical body (5), a positioning element (3) that cooperates with the nozzle is provided inside the installation head (4), and a cover plate (1) is provided at the opening of the installation head (4). The positioning member (3) includes a cylindrical part that engages in the mounting head (4), and a boss (9) is formed at the front end of the cylindrical part; The cover plate (1) has a groove (2) formed on its surface that mates with the boss (9), and the boss (9) engages in the groove (2).
2. The mold gate sleeve structure according to claim 1, characterized in that, The cover plate (1) is fastened to the end face of the mounting head (4) by a screw assembly.
3. The mold gate sleeve structure according to claim 2, characterized in that, The inner wall of the mounting head (4) forms a limiting ring structure (7), which allows the cover plate (1) to press the positioning member (3) against the surface of the limiting ring structure (7).
4. The mold gate sleeve structure according to claim 3, characterized in that, An anti-rotation keyway (8) is formed inside the cylindrical body (5).
5. The mold gate sleeve structure according to claim 4, characterized in that, The cylindrical body (5) has a flange structure (6) formed at its rear end.