Pipe bending and testing tool
By designing pipe bending and inspection tools, the problems of high labor intensity and insufficient monitoring of pipe bending in the fitter's drilling process were solved, achieving efficient monitoring of the pipe bending process and increased output.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIYAN HESHUO IND & TRADE CO LTD
- Filing Date
- 2026-05-27
- Publication Date
- 2026-06-26
Smart Images

Figure CN224414646U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile manufacturing technology, specifically a pipe bending tool and inspection fixture. Background Technology
[0002] The existing air filter manufacturing process is as follows: pipe cutting machine blanking → pipe bending machine bending → fitter drilling → riveting sleeve → product welding → grinding → surface treatment (painting); among which the bottleneck process is fitter drilling, which is labor-intensive and inefficient for operators.
[0003] To address the aforementioned issues, a new optimized process was designed: laser tube cutting machine for tube cutting (including drilling) → tube bending machine for tube bending → riveting sleeves → product welding → grinding → surface treatment (painting). By utilizing the laser tube cutting machine to simultaneously perform tube cutting and drilling processes, the bottleneck process problem was successfully resolved. However, the aforementioned new process lacks effective monitoring of the tube bending process. Utility Model Content
[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a pipe bending and inspection tool. By designing a set of pipe bending process inspection tools, the pipe bending process can be effectively monitored, and if abnormalities are found, adjustments can be made in a timely manner.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bent pipe with a square cross-section, the bent pipe including a longitudinal section, the distal end of the longitudinal section being bent to one side to form an inclined section, and the distal end of the inclined section being bent to form a transverse section; the longitudinal section, the inclined section and the transverse section are located on the same plane, and the two side walls of the longitudinal section are provided with a plurality of first through holes, and the two side walls of the transverse section are provided with a plurality of second through holes.
[0006] A further improvement is that the angle between the longitudinal segment and the inclined segment is 169°, and the angle between the inclined segment and the transverse segment is 79°.
[0007] A further improvement is that a first circular arc transition is provided between the longitudinal segment and the inclined segment, and a second circular arc transition is provided between the inclined segment and the transverse segment.
[0008] This utility model also provides a gauge for the aforementioned bent pipe, comprising a base plate, wherein the base plate is provided with a plurality of support plates for supporting the bent pipe, and further comprising two first positioning clamps, two second positioning clamps, and a plurality of positioning pins; the inner sidewalls of the two first positioning clamps are respectively connected to both sides of each support plate located in the longitudinal section, and the first positioning clamps are provided with first positioning holes corresponding one-to-one with each first through hole; the inner sidewalls of the two second positioning clamps are respectively connected to both sides of each support plate located in the transverse section, and the second positioning clamps are provided with second positioning holes corresponding one-to-one with each second through hole; the positioning pins are inserted into the corresponding first positioning holes and first through holes, or the corresponding second positioning holes and second through holes.
[0009] A further improvement is that the top of the support plate is provided with a positioning groove that matches the bend, and the top surface of the bend is flush with the top of the support plate.
[0010] A further improvement is that the proximal end of the first positioning clamp is flush with the proximal end of the longitudinal section, and the top of the first positioning clamp is flush with the top of the support plate.
[0011] A further improvement is that the far end of the second positioning clamp is flush with the far end of the transverse section, and the top of the second positioning clamp is flush with the top of the support plate.
[0012] A further improvement is that the first positioning clamp and the connected support plates are an integral structure.
[0013] A further improvement is that the second positioning clamp and the connected support plates are an integral structure.
[0014] A further improvement is that one end of the positioning pin is provided with an enlarged diameter portion, and a limiting step is formed between the enlarged diameter portion and the positioning pin.
[0015] The beneficial effects of this utility model are as follows:
[0016] This invention, through the design of a set of inspection tools for the pipe bending process, enables effective monitoring of the process. If any abnormalities are detected, timely adjustments can be made, improving production efficiency and product quality. Shift output has increased from 40 pieces to 80 pieces, reducing the labor intensity of operators and lowering production costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the bent pipe in an embodiment of this utility model;
[0018] Figure 2 This is a perspective view of the inspection fixture in the embodiments of this utility model;
[0019] Figure 3 This is a front view of the inspection fixture in an embodiment of this utility model;
[0020] Figure 4 This is a side view of the inspection fixture in an embodiment of this utility model;
[0021] Figure 5 This is a top view of the inspection fixture in an embodiment of this utility model;
[0022] Figure 6 This is a schematic diagram of the support plate in an embodiment of the present utility model;
[0023] Figure 7 This is a schematic diagram of the structure of the first positioning clamp in an embodiment of the present utility model;
[0024] Figure 8 This is a schematic diagram of the structure of the second positioning clamp in an embodiment of the present utility model;
[0025] Figure 9 This is a schematic diagram of the positioning pin in an embodiment of the present utility model.
[0026] Figure label:
[0027] 1-Bend; 11-Longitudinal section; 12-Inclined section; 13-Transverse section; 14-First through hole; 15-Second through hole; 16-First circular arc transition; 17-Second circular arc transition;
[0028] 2-Base plate;
[0029] 3-Support plate; 31-Positioning groove;
[0030] 4-First positioning clamp; 41-First positioning hole;
[0031] 5-Second positioning clamp; 51-Second positioning hole;
[0032] 6-Positioning pin; 61-Expanded diameter section; 62-Limiting step. Detailed Implementation
[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
[0034] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.
[0036] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0037] See Figure 1 As shown, this embodiment of the utility model provides a bent pipe with a square cross-section. The bent pipe 1 includes a longitudinal section 11, the distal end of the longitudinal section 11 is bent to one side to form an inclined section 12, and the distal end of the inclined section 12 is bent to form a transverse section 13. The longitudinal section 11, the inclined section 12, and the transverse section 13 are located in the same plane, and several first through holes 14 are opened on both side walls of the longitudinal section 11, and several second through holes 15 are opened on both side walls of the transverse section 13. In this embodiment, the included angle between the longitudinal section 11 and the inclined section 12 is 169°, and the included angle between the inclined section 12 and the transverse section 13 is 79°. Specifically, a first arc transition 16 is provided between the longitudinal section 11 and the inclined section 12, and a second arc transition 17 is provided between the inclined section 12 and the transverse section 13.
[0038] See Figures 2-5 As shown, this utility model embodiment also provides a gauge for the above-mentioned bent pipe, including a base plate 2, a plurality of support plates 3 for supporting the bent pipe 1 are provided on the base plate 2, and also includes two first positioning clamps 4, two second positioning clamps 5 and a plurality of positioning pins 6.
[0039] See Figure 7 As shown, the inner walls of the two first positioning clamps 4 are respectively connected to both sides of each support plate 3 located in the longitudinal section 11, and the first positioning clamps 4 are provided with first positioning holes 41 corresponding to each of the first through holes 14; specifically, the proximal end of the first positioning clamp 4 is flush with the proximal end of the longitudinal section 11, and the top of the first positioning clamp 4 is flush with the top of the support plate 3. The first positioning clamp 4 and the connected support plates 3 are an integral structure.
[0040] See Figure 8 As shown, the inner walls of the two second positioning clamps 5 are respectively connected to both sides of each support plate 3 located in the transverse section 13, and the second positioning clamps 5 are provided with second positioning holes 51 corresponding to each of the second through holes 15; specifically, the distal end of the second positioning clamp 5 is flush with the distal end of the transverse section 13, and the top of the second positioning clamp 5 is flush with the top of the support plate 3. The second positioning clamps 5 and the connected support plates 3 are an integral structure.
[0041] See Figure 9As shown, the positioning pin 6 is inserted into the corresponding first positioning hole 41 and first through hole 14, or the corresponding second positioning hole 51 and second through hole 15. Specifically, one end of the positioning pin 6 is provided with an enlarged diameter portion 61, and a limiting step 62 is formed between the enlarged diameter portion 61 and the positioning pin 6.
[0042] As shown in Figure 6, the top of the support plate 3 is provided with a positioning groove 31 that is adapted to the bend 1, and the top surface of the bend 1 is flush with the top of the support plate 3.
[0043] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0044] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.
Claims
1. A bent pipe having a square cross-section, characterized in that: The bend (1) includes a longitudinal section (11), the distal end of the longitudinal section (11) is bent to one side to form an inclined section (12), and the distal end of the inclined section (12) is bent to form a transverse section (13); the longitudinal section (11), the inclined section (12) and the transverse section (13) are located in the same plane, and the two side walls of the longitudinal section (11) are provided with a plurality of first through holes (14), and the two side walls of the transverse section (13) are provided with a plurality of second through holes (15).
2. The bend according to claim 1, characterized in that: The angle between the longitudinal segment (11) and the inclined segment (12) is 169°, and the angle between the inclined segment (12) and the transverse segment (13) is 79°.
3. The bend according to claim 1, characterized in that: A first arc transition (16) is provided between the longitudinal segment (11) and the inclined segment (12), and a second arc transition (17) is provided between the inclined segment (12) and the transverse segment (13).
4. A fixture for inspecting the bent pipe according to any one of claims 1 to 3, comprising a base plate (2), wherein a plurality of support plates (3) for supporting the bent pipe (1) are provided on the base plate (2), characterized in that: It also includes two first positioning clamps (4), two second positioning clamps (5), and several positioning pins (6); The inner walls of the two first positioning clamps (4) are respectively connected to the two sides of each support plate (3) located in the longitudinal section (11), and the first positioning clamps (4) are provided with first positioning holes (41) corresponding to each first through hole (14). The inner walls of the two second positioning clamps (5) are respectively connected to the two sides of each support plate (3) located in the transverse section (13), and the second positioning clamps (5) are provided with second positioning holes (51) corresponding to each second through hole (15). The positioning pin (6) is inserted into the corresponding first positioning hole (41) and first through hole (14), or the corresponding second positioning hole (51) and second through hole (15).
5. The inspection fixture according to claim 4, characterized in that: The top of the support plate (3) is provided with a positioning groove (31) that is compatible with the bend (1), and the top surface of the bend (1) is flush with the top of the support plate (3).
6. The inspection fixture according to claim 4, characterized in that: The proximal end of the first positioning clamp (4) is flush with the proximal end of the longitudinal section (11), and the top of the first positioning clamp (4) is flush with the top of the support plate (3).
7. The inspection fixture according to claim 4, characterized in that: The far end of the second positioning clamp (5) is flush with the far end of the transverse section (13), and the top of the second positioning clamp (5) is flush with the top of the support plate (3).
8. The inspection fixture according to claim 4, characterized in that: The first positioning clamp (4) and each connected support plate (3) are an integral structure.
9. The inspection fixture according to claim 4, characterized in that: The second positioning clamp (5) and the connected support plates (3) are an integral structure.
10. The inspection fixture according to claim 4, characterized in that: One end of the positioning pin (6) is provided with an enlarged diameter portion (61), and a limiting step (62) is formed between the enlarged diameter portion (61) and the positioning pin (6).