Primary-secondary part of transition element

Abstract

The invention discloses a transition element child-mother piece which comprises a transition element A and a transition element B. The end faces of the transition element A and the transition element B are special-shaped and different-phase, phase and end face transition is formed by eight different special-shaped curved surfaces which are kneaded pairwise, each group of special-shaped surfaces are consistent in thread pitch and kneaded mutually, and the transition element A and the transition element B are matched in a child-mother mode. According to the primary and secondary parts of the transition components, the transition component A and the transition component B are smoother, more stable and more accurate during assembly through transition formed by pairwise kneading of eight different special-shaped curved surfaces for end face special-shaped and different-phase transition and phase and end face transition and different groups of spiral curved surface screw pitches in cooperation with different transition end faces; two special-shaped and different-phase surfaces are subjected to transition treatment, so that raw materials can be smoothly transited to a 90-degree phase from a 0-degree phase while original parts are not interfered, the self-cleaning performance of the screw is improved, and the problems of raw material retention, raw material carbonization, too fast original part abrasion, unqualified finished materials and the like are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing in the automobile industry, and in particular to a transitional original component and sub-component. Background Art

[0002] In the field of plastic extrusion and processing, the uniform transition and pushing of raw materials in the barrel are crucial to producing high-quality products.

[0003] Reference patents CN104987619A and CN108997674A respectively disclose a PVC-U environmentally friendly water supply pipe and its processing technology, and a PVC composite pipe and its production technology. These technologies mainly focus on formula ingredients and processing methods to improve product performance and service life.

[0004] However, these technologies do not solve the problems of retention and carbonization of raw materials during transition in the barrel, and rapid wear or even breakage of threaded components.

[0005] Especially in the transition process from single-head parallel assembly to double-head vertical assembly, the transition of raw materials is not smooth, resulting in serious problems such as substandard finished materials, rapid wear or breakage of original parts, and barrel pressure relief, which in turn affects production efficiency and product quality.

[0006] In the prior art, the transition is usually carried out by splitting or setting steps, but this cannot effectively solve the retention problem of raw materials during transition, and under specific formulas and cylinder filling ratios, this solution has limited effect.

[0007] Therefore, it is necessary to develop a new transition element to solve the problem of raw material retention during transition in the barrel, improve the smoothness of raw material transition, extend the service life of the element, and thus improve production efficiency and product quality.

[0008] This application is aimed at this technical problem and proposes an innovative solution, which aims to improve the transition process of raw materials in the barrel, solve the problem of raw materials being retained in the barrel during transition, achieve smooth transition of raw materials, and improve production efficiency and product quality. Summary of the Invention

[0009] The present application provides a transition element mother-and-child component, including a transition element A and a transition element B. The end faces of these two elements are of different shapes and phases. The phase and end face transitions are composed of eight different special-shaped curved surfaces, which are kneaded together in pairs to form a transition. The pitch of each group of special-shaped surfaces is consistent and they are kneaded together to form a mother-and-child component of the transition element A and the transition element B that cooperate with each other.

[0010] The transition element A and transition element B of the present application include four meshing groups. The pitch of the two spiral surfaces in the first group is 100mm, the pitch of the two spiral surfaces in the second group is 80mm, the pitch of the two spiral surfaces in the third group is 120mm, and the pitch of the two spiral surfaces in the fourth group is 150mm. Preferably, the pitch of each group is different to adapt to different working requirements.

[0011] Preferably, there are at least four groups of spiral surfaces spirally arranged along the outer walls of transition element A and transition element B, and the cross sections of the spiral surfaces are respectively arranged on both sides of transition element A and transition element B, and the gaps between the spiral surfaces are matched with the surfaces of transition element A and transition element B to form thread grooves; one side of the groove walls on opposite sides of the thread groove is the first arc surface of one of the spiral surfaces, and the other side is composed of the vertical surface of the other spiral surface, the smooth transition surface and the second arc surface; the side where the smooth transition surface is connected to the bottom of the thread groove gradually approaches the groove wall on the other side of the thread groove through the vertical surface to the second arc surface. This design makes the components smoother when mating, reducing friction and wear.

[0012] Preferably, the middle portion of the smooth transition surface gradually arches from the vertical surface to the second curved surface and matches the second curved surface. This design makes the transition element A and the transition element B fit more tightly together, thereby improving the stability and reliability of the elements.

[0013] Preferably, each spiral surface is parallel to the central axis of transition element A and transition element B, and transition element A and transition element B have transition end face A and transition end face B. Transition end face A is a quadrilateral inscribed in transition element A and having the same radian on all four sides. The quadrilateral is symmetrical about the center of the circle, and two adjacent sides of the quadrilateral have an 8° circular chamfer. Transition end face B is circumscribed in the shuttle shape of transition element B, and the two top corners of the shuttle shape are provided with a 17° circular chamfer. Transition element A and transition element B are both located on the central axis of the spiral surface. This design makes the assembly of the transition element mother and child parts more precise, and improves the matching accuracy and service life of the components.

[0014] The transition original master and daughter parts of the present application are formed by kneading eight different special-shaped surfaces with special end face shapes and phases, phase and end face transitions in pairs, and different groups of spiral surface pitches, combined with different transition end faces, so that the transition original A and the transition original B are smoother, more stable and precise during assembly, thereby improving the matching accuracy and service life of the originals, and having broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation scheme of the present invention, the following is a brief introduction to the drawings used in this application.

[0016] Figure 1 :Schematic diagram of the structure of a transitional original mother-and-child part Figure 2

[0017] Figure 2 :Schematic diagram of the structure of a transitional original mother-and-child part Figure 1

[0018] Figure 3 :Schematic diagram of the structure of a transitional original mother-and-child part Figure 3 DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example 1 Figure 1-3 As shown, the present invention provides a transition element mother-and-child part, including a transition element A and a transition element B, wherein the end faces of the transition element A and the transition element B are irregular in shape and phase, and the phase and end face transitions are composed of eight different irregular curved surfaces, which are kneaded in pairs to form the transition element A and the transition element B mother-and-child parts that cooperate with each other, and the transition element A and the transition element B include four groups of meshing groups, the pitch of the two spiral surfaces in the first group is 100mm, the pitch of the two spiral surfaces in the second group is 80mm, the pitch of the two spiral surfaces in the third group is 120mm, and the pitch of the two spiral surfaces in the fourth group is 150mm.

[0021] There are at least four groups of spiral surfaces spirally arranged along the outer walls of transition element A and transition element B, and the cross sections of the spiral surfaces are respectively arranged on both sides of transition element A and transition element B. The gaps between the spiral surfaces cooperate with the surfaces of transition element A and transition element B to form thread grooves; one side of the groove walls on opposite sides of the thread groove is the first arc surface of one of the spiral surfaces, and the other side is composed of the vertical surface, the smooth transition surface and the second arc surface of the other spiral surface; the side of the smooth transition surface connected to the bottom of the thread groove gradually approaches the groove wall on the other side of the thread groove from the vertical surface to the second arc surface.

[0022] The middle portion of the smooth transition surface is gradually arched from the vertical surface to the second curved surface and matches the second curved surface.

[0023] Each of the spiral surfaces is parallel to the central axis of the transition element A and the transition element B. The transition element A1 and the transition element B have a transition end face A and a transition end face B. The transition end face A is a quadrilateral inscribed in the transition element A and having the same radian on all four sides. The quadrilateral is symmetrical about the center of the circle, and two adjacent sides of the quadrilateral have an 8° circular chamfer. The transition end face B is a shuttle shape circumscribed to the transition element B, and the two top corners of the shuttle shape are provided with a 17° circular chamfer. The transition element A and the transition element B are both located on the central axis of the spiral surface.

[0024] The beneficial effects of this technical solution are: the spiral surfaces composed of 8 different surfaces are spliced ​​into one, the molding tolerance of each spiral surface is independently controlled, local problems can be repaired, the overall integrity and precision are higher, and the processing technology is simpler and the yield rate is higher than that of the existing technical solutions.

[0025] 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.

[0026] Any modifications, equivalent substitutions, 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 transitional master-slave component, characterized in that: It includes a transition element A and a transition element B, the end faces of the transition element A and the transition element B are irregular in shape and phase, the phase and end face transitions are formed by eight different irregular curved surfaces, which are kneaded in pairs to form a transition, and the pitch of each group of irregular surfaces is consistent and kneaded with each other to form a transition element A and a transition element B that cooperate with each other. The transition element A and the transition element B include four meshing groups, the pitch of the two spiral surfaces in the first group is 100mm, the pitch of the two spiral surfaces in the second group is 80mm, the pitch of the two spiral surfaces in the third group is 120mm, and the pitch of the two spiral surfaces in the fourth group is 150mm.

2. A transitional master-sub-part according to claim 1, characterized in that: There are at least four groups of spiral surfaces spirally arranged along the outer walls of transition element A and transition element B, and the cross sections of the spiral surfaces are respectively arranged on both sides of transition element A and transition element B. The gaps between the spiral surfaces cooperate with the surfaces of transition element A and transition element B to form thread grooves; one side of the groove walls on opposite sides of the thread groove is the first arc surface of one of the spiral surfaces, and the other side is composed of the vertical surface, the smooth transition surface and the second arc surface of the other spiral surface; the side of the smooth transition surface connected to the bottom of the thread groove gradually approaches the groove wall on the other side of the thread groove from the vertical surface to the second arc surface.

3. The transitional master component according to claim 2, characterized in that: The middle portion of the smooth transition surface is gradually arched from the vertical surface to the second curved surface and matches the second curved surface.

4. The transitional master-sub-assembly according to claim 3, characterized in that: Each of the spiral surfaces is parallel to the central axis of the transition element A and the transition element B. The transition element A and the transition element B have a transition end face A and a transition end face B. The transition end face A is a quadrilateral inscribed in the transition element A and having the same radian on all four sides. The quadrilateral is symmetrical about the center of the circle, and two adjacent sides of the quadrilateral have an 8° circular chamfer. The transition end face B is a shuttle shape circumscribed to the transition element B, and the two top corners of the shuttle shape are provided with a 17° circular chamfer. The transition element A and the transition element B are both located on the central axis of the spiral surface.

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