A screw
Patent Information
- Application Number
- CN202521338283.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-06-26
AI Technical Summary
[0005]有鉴于此，本实用新型针对现有技术存在之缺失，其主要目的是提供一种螺杆，其解决了现有螺杆之混炼程度和混炼效果欠佳的问题
[0020]本实用新型与现有技术相比具有明显的优点和有益效果，具体而言，由上述技术方案可知，其主要是通过混炼段、第一螺纹段、第二螺纹段、第三螺纹段的结合设计，使其具备螺牙结构和混炼棱结构，从而使得混炼结构复杂，能更彻底地对物料进行混炼，实现了多段式螺纹混炼结构设计，从而使物料经多段式螺纹混炼结构进行推进和混炼，提高了混炼效果和混炼程度，通过于混炼段、第一螺纹段、第二螺纹段、第三螺纹段、外露段的表面电镀有镀铬层，能够提高螺杆的硬度，以延长使用寿命。
Smart Images
Figure CN224796274U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw technology, and in particular to a screw. Background Technology
[0002] Currently, the screw is one of the core components of an injection molding machine, with functions such as conveying, mixing, and injection molding. As the quality requirements for injection-molded products increase, the requirements for the mixing effect of raw materials by the screw also increase.
[0003] In existing technologies, screws used for mixing raw materials typically only have threads on the screw itself to propel and mix the material. For example, it usually includes a screw body, which comprises a shank, a connecting part, and a rod body connected sequentially from right to left. One or two different threads are usually provided on the rod body. Thus, although different threads are used for propulsion and mixing, the basic structure remains unchanged due to differences in pitch, thread width, lead, etc. The material is only processed by the thread structure and usually only has one-stage or two-stage propulsion and mixing. This makes it impossible to achieve different mixing effects through different structures, resulting in poor mixing degree and effect.
[0004] Therefore, a new technology needs to be developed to solve the above problems. Utility Model Content
[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a screw that solves the problem of poor mixing degree and mixing effect of the existing screw.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A screw, comprising an electroplated section and a non-electroplated section;
[0008] The electroplating section includes a mixing section, a first threaded section, a second threaded section, a third threaded section, and an exposed section connected sequentially from left to right. The surfaces of the mixing section, the first threaded section, the second threaded section, the third threaded section, and the exposed section are electroplated with a chromium plating layer.
[0009] The outer peripheral sidewall of the mixing section is provided with a plurality of mixing ridges, which are arranged sequentially at intervals along the axial direction. The mixing ridges extend circumferentially and have a plurality of concave arc grooves arranged sequentially at uniform intervals along the circumferential direction.
[0010] The outer peripheral sidewall of the first threaded segment has a first threaded edge, and the outer peripheral sidewall of the second threaded segment has a second threaded edge and a third threaded edge arranged at alternating intervals. The second threaded edge is the main thread, and the third threaded edge is the auxiliary thread. The outer peripheral sidewall of the third threaded segment has a fourth threaded edge.
[0011] The left end of the second spiral ridge is connected to the right end of the first spiral ridge, the left end of the third spiral ridge is connected to the right end of the first spiral ridge, the right end of the second spiral ridge is connected to the left end of the fourth spiral ridge, and the right end of the third spiral ridge is connected to the left end of the fourth spiral ridge.
[0012] The non-electroplated section includes a connecting section and a connecting segment connected sequentially from left to right, with the left end of the connecting section connected to the right end of the exposed section.
[0013] As a preferred embodiment, the left end of the mixing section is integrally connected to a conical portion, which has a gradually decreasing size from right to left.
[0014] As a preferred embodiment, the second threaded segment includes a gradually decreasing segment and a non-gradual segment connected sequentially from left to right. The bottom diameter of the gradually decreasing segment gradually decreases from left to right. The maximum bottom diameter of the gradually decreasing segment is equal to the bottom diameter of the first threaded segment, and the minimum bottom diameter of the gradually decreasing segment is equal to the bottom diameter of the non-gradual segment and the bottom diameter of the third threaded segment.
[0015] As a preferred embodiment, the left side of the outer peripheral sidewall of the exposed section is provided with a plurality of annular grooves, which are arranged in sequence at uniform intervals along the axial direction. The annular grooves extend circumferentially, and an annular protrusion is formed between two adjacent annular grooves.
[0016] As a preferred embodiment, the connecting segment is in the shape of a frustum that gradually decreases in size from left to right. The maximum outer diameter of the connecting segment is equal to the outer diameter of the exposed segment, and the minimum outer diameter of the connecting segment is equal to the outer diameter of the connecting section.
[0017] As a preferred embodiment, a keyway is recessed on the outer peripheral sidewall of the connecting section, and the keyway extends axially.
[0018] As a preferred embodiment, the bottom of the keyway is recessed with a connecting hole.
[0019] As a preferred embodiment, the right end of the connecting segment is chamfered.
[0020] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly uses the combined design of the mixing section, the first threaded section, the second threaded section, and the third threaded section to give it a threaded structure and a mixing ridge structure, thereby making the mixing structure complex and enabling more thorough mixing of materials. This achieves a multi-segment threaded mixing structure design, which allows materials to be propelled and mixed through the multi-segment threaded mixing structure, improving the mixing effect and degree of mixing. By electroplating a chromium layer on the surface of the mixing section, the first threaded section, the second threaded section, the third threaded section, and the exposed section, the hardness of the screw can be improved, thereby extending its service life.
[0021] To more clearly illustrate the structural features, technical means, and specific objectives and functions of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0023] Figure 2 This is a schematic diagram of the mixing section according to an embodiment of the present invention;
[0024] Figure 3 yes Figure 2 A cross-sectional view at MM;
[0025] Figure 4 yes Figure 1 A sectional view at point AA;
[0026] Figure 5 yes Figure 1 A partial schematic diagram of the F direction;
[0027] Figure 6 yes Figure 1 Enlarged detailed view of the structure at point B;
[0028] Figure 7 yes Figure 1 Enlarged view of point C.
[0029] Explanation of reference numerals in the attached diagram:
[0030] 10. Electroplating section; 20. Non-electroplated section
[0031] 30. Mixing Section 31. Mixing Ribbon
[0032] 311, concave groove; 40, first threaded section
[0033] 41. First threaded edge; 50. Second threaded section
[0034] 51. Second spiral ridge 52. Third spiral ridge
[0035] 53. Gradual transition section 54. Non-gradual transition section
[0036] 60. Third threaded section; 61. Fourth threaded edge
[0037] 70. Exposed section; 71. Annular groove
[0038] 72. Annular protrusion; 80. Connecting section
[0039] 90. Connecting section; 91. Keyway
[0040] 92. Connecting hole; 93. Chamfer.
[0041] 101. Conical part. Detailed Implementation
[0042] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of an embodiment of the present invention.
[0043] A screw includes an electroplated section 10 and a non-electroplated section 20; wherein: the electroplated section 10 includes a mixing section 30, a first threaded section 40, a second threaded section 50, a third threaded section 60, and an exposed section 70 connected sequentially from left to right, and the surfaces of the mixing section 30, the first threaded section 40, the second threaded section 50, the third threaded section 60, and the exposed section 70 are electroplated with a chromium plating layer; thus, by electroplating a chromium plating layer on the surface of the electroplated section 10, the hardness of the screw can be improved.
[0044] like Figure 2 and Figure 3 As shown, the outer peripheral sidewall of the mixing section 30 is provided with a plurality of mixing ridges 31, which are arranged sequentially at intervals along the axial direction. The mixing ridges 31 extend circumferentially and have a plurality of concave arc grooves 311 arranged sequentially at uniform intervals along the circumferential direction. In this embodiment, there are 19 concave arc grooves 311 and eight mixing ridges 31. The eight mixing ridges 31 are divided into two groups, left and right. Each group of mixing ridges includes four mixing ridges 31. The axial length of the four mixing ridges 31 in each group decreases sequentially from left to right. This allows them to be mixed in the mixing section 30. A two-stage mixing structure is formed so that the raw materials can be mixed twice, thereby improving the degree and effect of mixing. Specifically, the axial lengths of the four mixing edges 31 in each set of mixing edges are 28mm, 23mm, 17mm and 14mm from left to right, respectively. The spacing between the four mixing edges 31 in each set of mixing edges is 23mm, 23mm and 28mm from left to right, respectively. The spacing between the two sets of mixing edges is 17mm. In addition, a tapered part 101 is integrally connected to the left end of the mixing section 30. The tapered part 101 has a gradually decreasing structure from right to left to facilitate insertion into the material.
[0045] like Figure 1 As shown, the outer peripheral sidewall of the first threaded segment 40 has a first thread ridge 41, the outer peripheral sidewall of the second threaded segment 50 has a second thread ridge 51 and a third thread ridge 52 arranged at alternating intervals, the second thread ridge 51 is the main thread, the third thread ridge 52 is the auxiliary thread, and the outer peripheral sidewall of the third threaded segment 60 has a fourth thread ridge 61; the left end of the second thread ridge 51 is connected to the right end of the first thread ridge 41, the left end of the third thread ridge 52 is connected to the right end of the first thread ridge 41, the right end of the second thread ridge 51 is connected to the left end of the fourth thread ridge 61, and the right end of the third thread ridge 52 is connected to the left end of the fourth thread ridge 61; thus, through the combined design of the first threaded segment 40, the second threaded segment 50, and the third threaded segment 60, a multi-segment thread structure design is achieved, thereby enabling the material to be propelled and mixed through the multi-segment thread structure.
[0046] like Figure 1 As shown, the second threaded section 50 includes a gradually decreasing section 53 and a non-gradually decreasing section 54 connected sequentially from left to right. The bottom diameter of the gradually decreasing section 53 is set to gradually decrease from left to right, so that the fluid can accumulate the impact force in a gradually decreasing manner before entering the first threaded section 40. The maximum bottom diameter of the gradually decreasing section 53 is equal to the bottom diameter of the first threaded section 40, and the minimum bottom diameter of the gradually decreasing section 53 is equal to the bottom diameter of the non-gradually decreasing section 54 and the bottom diameter of the third threaded section 60.
[0047] like Figure 1 and Figure 7 As shown, the left side of the outer peripheral sidewall of the exposed section 70 is provided with a plurality of annular grooves 71. The plurality of annular grooves 71 are arranged in sequence at uniform intervals along the axial direction. The annular grooves 71 are arranged in a circumferential direction and an annular protrusion 72 is formed between two adjacent annular grooves 71.
[0048] like Figure 1 As shown, the non-electroplated section 20 includes a connecting section 80 and a connecting section 90 connected sequentially from left to right. The left end of the connecting section 80 is connected to the right end of the exposed section 70. The connecting section 80 is a frustum-shaped section that gradually decreases in size from left to right. The maximum outer diameter of the connecting section 80 is equal to the outer diameter of the exposed section 70, and the minimum outer diameter of the connecting section 80 is equal to the outer diameter of the connecting section 90.
[0049] like Figure 4 and Figure 5 As shown, a keyway 91 is recessed on the outer peripheral sidewall of the connecting section 90. The keyway 91 extends axially, and a connecting hole 92 is recessed at the bottom of the keyway 91. The keyway 91 and the connecting hole 92 facilitate connection and installation with an external structure. A chamfer 93 is formed at the right end of the connecting section 90.
[0050] In summary, the key design feature of this utility model lies in its combination of a mixing section, a first threaded section, a second threaded section, and a third threaded section, which creates a threaded structure and a mixing ridge structure. This results in a complex mixing structure that allows for more thorough mixing of materials. The multi-segment threaded mixing structure design enables materials to be propelled and mixed through this structure, improving the mixing effect and degree. Furthermore, the chromium plating on the surfaces of the mixing section, the first threaded section, the second threaded section, the third threaded section, and the exposed section enhances the screw's hardness and extends its service life.
[0051] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A screw, characterized in that: Includes electroplated sections and non-electroplated sections; The electroplating section includes a mixing section, a first threaded section, a second threaded section, a third threaded section, and an exposed section connected sequentially from left to right. The surfaces of the mixing section, the first threaded section, the second threaded section, the third threaded section, and the exposed section are electroplated with a chromium plating layer. The outer peripheral sidewall of the mixing section is provided with a plurality of mixing ridges, which are arranged sequentially at intervals along the axial direction. The mixing ridges extend circumferentially and have a plurality of concave arc grooves arranged sequentially at uniform intervals along the circumferential direction. The outer peripheral sidewall of the first threaded segment has a first threaded edge, and the outer peripheral sidewall of the second threaded segment has a second threaded edge and a third threaded edge arranged at alternating intervals. The second threaded edge is the main thread, and the third threaded edge is the auxiliary thread. The outer peripheral sidewall of the third threaded segment has a fourth threaded edge. The left end of the second spiral ridge is connected to the right end of the first spiral ridge, the left end of the third spiral ridge is connected to the right end of the first spiral ridge, the right end of the second spiral ridge is connected to the left end of the fourth spiral ridge, and the right end of the third spiral ridge is connected to the left end of the fourth spiral ridge. The non-electroplated section includes a connecting section and a connecting segment connected sequentially from left to right, with the left end of the connecting section connected to the right end of the exposed section; The left end of the mixing section is integrally connected to a conical part, which has a structure that gradually decreases in size from right to left; The second threaded segment includes a gradually changing segment and a non-gradually changing segment connected sequentially from left to right. The bottom diameter of the gradually changing segment gradually decreases from left to right. The maximum bottom diameter of the gradually changing segment is equal to the bottom diameter of the first threaded segment, and the minimum bottom diameter of the gradually changing segment is equal to the bottom diameter of the non-gradually changing segment and the bottom diameter of the third threaded segment. The connecting segment is in the shape of a frustum that gradually decreases in size from left to right. The maximum outer diameter of the connecting segment is equal to the outer diameter of the exposed segment, and the minimum outer diameter of the connecting segment is equal to the outer diameter of the connecting section. The outer peripheral sidewall of the connecting section is recessed with a keyway, which extends axially; the bottom of the keyway is recessed with a connecting hole.
2. The screw according to claim 1, characterized in that: The exposed section has multiple annular grooves recessed on the left side of its outer peripheral sidewall. These annular grooves are arranged at uniform intervals along the axial direction and extend circumferentially. An annular protrusion is formed between two adjacent annular grooves.
3. A screw according to claim 1, characterized in that: The right end of the connecting segment has a chamfer.