Internal gear for plastic pipe cutters
By designing the internal gears of plastic pipe shears, using a fan-shaped steel plate and an internal open design with holes, combined with wear-resistant components and lubrication mechanism, the existing open gear design lacks structural limiting force and lubrication problems, and improves the wear resistance and service life of the gears.
Patent Information
- Application Number
- CN202421379724.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The existing open-type external gear design of plastic pipe shears causes the gear to lack structural restriction force during meshing movement, and the gear tooth surface contacts the space during daily placement, affecting the gear quality.
A plastic pipe shear internal gear is designed, using a fan-shaped steel plate and hole-connecting lugs as an integrated structure, a fan-shaped through-hole and a fan-shaped gear section is set, the surface is coated with wear-resistant components, and a lubrication mechanism is set in the rounded corner rotary hole to achieve good lubrication effect.
Through the internal open design, the gear can be subject to structural constraints during meshing movement, improving wear resistance and service life, while the lubricating mechanism ensures lubrication of the rounded corner bores and reduces friction and wear.
Smart Images
Figure CN222741572U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic pipe shears and relates to an internal gear of the plastic pipe shears. Background Art
[0002] In modern house decoration, non-metallic pipes have largely replaced metal pipes, especially plastic pipes, which are widely used. However, the existing pipe cutting method generally adopts sawing, whether it is electric sawing or manual sawing, burrs will be generated on the cut, which will affect the flow rate of water and may fall off and mix into the water flow, affecting the water quality. Another cutting method is shearing, that is, cutting with scissors.
[0003] The shearing movement of the plastic pipe shears needs to rely on gears as the rotary motion mechanism. The gears in the prior art adopt a fan-shaped external gear design. This external open design leads to a lack of structural restraint force during the meshing movement of the gears, and the tooth surface of the gears has a large contact with the space when placed in daily life, which affects the quality of the gears. Based on this, we designed an internal gear for the plastic pipe shears. Summary of the invention
[0004] The utility model aims to provide an internal gear for plastic pipe cutters to solve the problems raised in the above background technology.
[0005] The purpose of the utility model can be achieved by the following technical solutions: the internal gear of the plastic pipe shear comprises a fan-shaped steel plate, a connecting lug with a hole and a fan-shaped gear segment, one end of the fan-shaped steel plate and the connecting lug with a hole are an integrated structure, a fan-shaped through hole is arranged in the middle of the fan-shaped steel plate, the fan-shaped gear segment is arranged inside the fan-shaped through hole and is an integrated structure with the fan-shaped steel plate, a shear arm mounting groove is arranged at the top of the fan-shaped steel plate, and a rounded corner turning hole is opened in the middle of the shear arm mounting groove;
[0006] The surface of the sector gear segment is provided with a wear-resistant component, which consists of a diamond wear-resistant layer, a ceramic wear-resistant layer and an inlaid connecting layer. The ceramic wear-resistant layer is arranged on the outer surface of the sector gear segment through the inlaid connecting layer, and the diamond wear-resistant layer is compositely connected with the ceramic wear-resistant layer.
[0007] In the internal gear of the above-mentioned plastic pipe shear, a lubrication mechanism is arranged inside the rounded corner hole; the lubrication mechanism includes an oil storage tank block, a flow guide pipe, and a contact rubber head. An opening capable of accommodating the oil storage tank block is arranged inside the opening, and the oil outlet of the oil storage tank block is connected with the flow guide pipe, and the contact rubber head is arranged at one end of the flow guide pipe and corresponds to the inside of the rounded corner hole. The purpose of such arrangement is to achieve a good effect of lubricating the rounded corner hole. When the connecting shaft of the plastic pipe shear is docked and installed, the installation shaft produces a rotation effect due to the effect of shear force, and the oil storage tank block can store lubricating oil, and the lubricating oil can flow out when needed to achieve lubrication of the rounded corner hole.
[0008] In the internal gear of the plastic pipe shear, the distance of the open end of the contact rubber head protruding from the rounded corner hole is one millimeter, and a gap is provided at the open end of the contact rubber head. The purpose of this arrangement is to facilitate the quantitative flow of lubricating oil, and to avoid the interference of the contact rubber head with the relative movement of the rounded corner hole.
[0009] In the internal gear of the plastic pipe shear, the outer surface of the diamond wear-resistant layer is provided with an anti-oil film, which is a nano-scale coating structure. The purpose of this arrangement is to achieve a good anti-oil effect and increase the use effect of the diamond wear-resistant layer.
[0010] In the internal gear of the plastic pipe shears, the thickness of the anti-oil film, the thickness of the diamond wear-resistant layer and the thickness of the ceramic wear-resistant layer are all equal. The purpose of this arrangement is to facilitate better painting.
[0011] In the internal gear of the plastic pipe shear, the central angle of the arc of the sector steel plate is 90 degrees. The purpose of this arrangement is to facilitate installation on the plastic pipe shear arm so that the overall structure of the sector steel plate will not leak out and maintain aesthetics.
[0012] Compared with the prior art, the advantages of the internal gear of the plastic pipe shear of the utility model are as follows: by arranging a fan-shaped through hole in the middle of the fan-shaped steel plate, the fan-shaped gear segment is arranged inside the fan-shaped through hole and is an integrated structure with the fan-shaped steel plate; by adopting an inwardly open design, the gear can be restricted by the fan-shaped steel plate structure during the meshing movement, and the tooth surface of the gear has little contact with the space when placed in daily life, and a diamond wear-resistant layer, a ceramic wear-resistant layer, and an inlaid connection layer are provided to increase the wear resistance of the fan-shaped gear segment; by arranging an oil storage tank block, a guide pipe, and a contact rubber head, a good effect of lubricating the rounded corner turning hole is achieved. When the connecting shaft of the plastic pipe shear is butt-connected and installed, the installation shaft produces a rotating effect due to the effect of shear force, and the oil storage tank block can store lubricating oil, and the lubricating oil can flow out when needed to achieve lubrication of the rounded corner turning hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1The utility model is a three-dimensional structural schematic diagram of the internal gear of the plastic pipe cutter.
[0014] Figure 2 The utility model is a structural schematic diagram of an internal gear lubrication mechanism of a plastic pipe cutter.
[0015] Figure 3 The utility model is a schematic diagram of the structure of the internal gear wear-resistant component of the plastic pipe shear.
[0016] In the figure, 1. fan-shaped steel plate; 2. connecting lug with hole; 3. shear arm mounting groove; 4. rounded corner hole; 5. fan-shaped through hole; 6. fan-shaped gear segment; 7. oil storage tank block; 8. diversion pipe; 9. contact rubber head; 10. opening; 11. anti-oil film; 12. diamond wear-resistant layer; 13. ceramic wear-resistant layer; 14. inlaid connection layer. DETAILED DESCRIPTION
[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0018] like Figure 1 , Figure 2 and Figure 3 As shown, the internal gear of the plastic pipe cutter of the utility model;
[0019] Embodiment: The technical solution includes a fan-shaped steel plate 1, a connecting lug with a hole 2 and a fan-shaped gear segment 6. One end of the fan-shaped steel plate 1 is an integrated structure with the connecting lug with a hole 2. A fan-shaped through hole 5 is provided in the middle of the fan-shaped steel plate 1. The fan-shaped gear segment 6 is arranged inside the fan-shaped through hole 5 and is an integrated structure with the fan-shaped steel plate 1. A shear arm mounting groove 3 is provided at the top of the fan-shaped steel plate 1. A rounded corner turning hole 4 is opened in the middle of the shear arm mounting groove 3.
[0020] A wear-resistant component is provided on the surface of the sector gear segment 6, and the wear-resistant component consists of a diamond wear-resistant layer 12, a ceramic wear-resistant layer 13 and an inlaid connecting layer 14. The ceramic wear-resistant layer 13 is provided on the outer surface of the sector gear segment 6 through the inlaid connecting layer 14, and the diamond wear-resistant layer 12 and the ceramic wear-resistant layer 13 are compositely connected.
[0021] In this embodiment, if Figure 2As shown, in order to achieve good lubrication effect of the rounded corner hole 4 and keep the rounded corner hole 4 with lubrication performance, a lubrication mechanism is arranged inside the rounded corner hole 4; the lubrication mechanism includes an oil storage tank block 7, a diversion pipe 8, and a contact rubber head 9. An opening 10 capable of accommodating the oil storage tank block 7 is arranged inside the rounded corner hole 4, and the oil storage tank block 7 is clamped and arranged inside the opening 10. The oil outlet of the oil storage tank block 7 is connected with the diversion pipe 8, and the contact rubber head 9 is arranged at one end of the diversion pipe 8 and corresponds to the inside of the rounded corner hole 4; the opening end of the contact rubber head 9 protrudes from the rounded corner hole 4 by a distance of millimeters and a gap is arranged at the opening end of the contact rubber head 9. The structural design of the contact rubber head 9 is to prevent the contact rubber head 9 from interfering with the relative movement of the rounded corner hole 4.
[0022] In this embodiment, in order to achieve a good anti-oil effect and increase the use effect of the diamond wear-resistant layer 12, the outer surface of the diamond wear-resistant layer 12 is provided with an anti-oil film 11, and the anti-oil film 11 is a nano-scale coating structure; the thickness of the anti-oil film 11, the thickness of the diamond wear-resistant layer 12 and the thickness of the ceramic wear-resistant layer 13 are all equal.
[0023] In this embodiment, in order to install the sector-shaped steel plate 1 on the plastic pipe shear arm so that the overall structure of the sector-shaped steel plate 1 does not leak out and maintains aesthetics, the central angle corresponding to the curvature of the sector-shaped steel plate 1 is 90 degrees.
[0024] Working principle: Figure 1 As shown, the internal gear is composed of a sector steel plate 1, a connecting lug 2 with a hole and a sector gear segment 6. A sector through hole 5 is arranged in the middle of the sector steel plate 1. The sector gear segment 6 is arranged inside the sector through hole 5 and is an integrated structure with the sector steel plate 1. With an inner open design, the sector gear segment 6 can be restricted by the structural force of the sector steel plate 1 during the relative meshing movement, and the tooth surface of the gear has little contact with the space when placed in daily life. In addition, a diamond wear-resistant layer 12, a ceramic wear-resistant layer 13 and an inlaid connection layer 14 are arranged on the sector gear segment 6 to increase the wear resistance of the sector gear segment 6 and improve its service life.
[0025] A scissor arm mounting groove 3 is arranged at the top of the fan-shaped steel plate 1, and a rounded corner hole 4 is opened in the middle of the scissor arm mounting groove 3; a lubricating mechanism is arranged on the inner side of the rounded corner hole 4; the lubricating mechanism includes an oil storage tank block 7, a diversion pipe 8, and a contact rubber head 9, wherein an opening 10 capable of accommodating the oil storage tank block 7 is arranged on the inner side of the rounded corner hole 4, and the oil storage tank block 7 is clamped and arranged inside the opening 10, and an oil outlet of the oil storage tank block 7 is connected with the diversion pipe 8 and the contact rubber head 9 is arranged at one end of the diversion pipe 8 and corresponds to the inner side of the rounded corner hole 4; a component capable of lubricating the rounded corner hole 4 is arranged, and the reason is that the installation shaft produces a rotation effect due to the effect of shear force, and then moves relative to the rounded corner hole 4, the oil storage tank block 7 can store lubricating oil, and the contact rubber head 9 can flow out lubricating oil when needed, so as to realize the lubrication of the rounded corner hole 4.
[0026] In the structural design of the contact rubber head 9 , the opening end of the contact rubber head 9 protrudes from the rounded corner hole 4 by one millimeter and a gap is provided at the opening end of the contact rubber head 9 to prevent the contact rubber head 9 from interfering with the relative movement of the rounded corner hole 4 .
[0027] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.
Claims
1. An internal gear for a plastic pipe shear, comprising a sector steel plate (1), a connecting lug with a hole (2) and a sector gear segment (6), characterized in that: One end of the fan-shaped steel plate (1) is integrated with the hole-carrying connecting lug (2), a fan-shaped through hole (5) is provided in the middle of the fan-shaped steel plate (1), the fan-shaped gear segment (6) is arranged inside the fan-shaped through hole (5) and is integrated with the fan-shaped steel plate (1), a shear arm mounting groove (3) is provided at the top of the fan-shaped steel plate (1), and a rounded corner turning hole (4) is provided in the middle of the shear arm mounting groove (3); The surface of the sector gear segment (6) is provided with a wear-resistant component, the wear-resistant component is composed of a diamond wear-resistant layer (12), a ceramic wear-resistant layer (13) and an inlaid connecting layer (14), the ceramic wear-resistant layer (13) is arranged on the outer surface of the sector gear segment (6) through the inlaid connecting layer (14), and the diamond wear-resistant layer (12) and the ceramic wear-resistant layer (13) are compositely connected.
2. The internal gear of the plastic pipe cutter according to claim 1, characterized in that: A lubricating mechanism is arranged on the inner side of the rounded corner hole (4); the lubricating mechanism comprises an oil storage tank block (7), a flow guide pipe (8), and a contact rubber head (9); an opening (10) capable of accommodating the oil storage tank block (7) is arranged on the inner side of the rounded corner hole (4); the oil storage tank block (7) is clamped and arranged inside the opening (10); an oil outlet of the oil storage tank block (7) is connected to the flow guide pipe (8); and the contact rubber head (9) is arranged at one end of the flow guide pipe (8) and corresponds to the inner side of the rounded corner hole (4).
3. The internal gear of the plastic pipe cutter according to claim 2, characterized in that: The distance that the opening end of the contact rubber head (9) protrudes from the rounded corner hole (4) is one millimeter, and a gap is provided at the opening end of the contact rubber head (9).
4. The internal gear of the plastic pipe cutter according to claim 1, characterized in that: The outer surface of the diamond wear-resistant layer (12) is provided with an anti-oil film (11), and the anti-oil film (11) is a nano-scale coating structure.
5. The internal gear of the plastic pipe cutter according to claim 4, characterized in that: The thickness of the anti-oil film (11), the thickness of the diamond wear-resistant layer (12) and the thickness of the ceramic wear-resistant layer (13) are all equal.
6. The internal gear of the plastic pipe cutter according to claim 1, characterized in that: The central angle corresponding to the arc of the sector-shaped steel plate (1) is 90 degrees.