Multi-size PFA pipe positioning and bending tool

Abstract

The utility model discloses a kind of multi-size PFA tubular product positioning bending tool, including fixed base plate, several different depth sizes of pipe middle bending groove and corresponding depth size of pipe end head limiting groove are set on fixed base plate, PFA tubular product of different pipe diameter size is bent and processed on pipe middle bending groove and pipe end head limiting groove, limiting pressing plate is rotatably arranged on the upper end of fixed base plate by rotating pin shaft, limiting pressing plate is set with equidistantly distributed cooling water through opening, limiting closure assembly is set between fixed base plate and limiting pressing plate, the utility model can be compatible with the bending use of multiple sizes of PFA tubular product, bending forming standard, reduce PFA tubular product bending processing deformation risk, reduce jig cost, and bending angle is consistent, limiting fixed by pipe middle bending groove and pipe end head limiting groove, make PFA tubular product take and place more stable and accurate, bending angle rebound is consistent, quality can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of PFA pipe bending technology, specifically relating to a positioning and bending tooling for multi-size PFA pipes. Background Technology

[0002] In the manufacturing of cleaning equipment, there are numerous pipeline connections for hazardous chemicals, and the pipeline materials include PFA. Different diameter PFA pipes are required for different valves. PFA pipe is a high-performance fluoroplastic pipe. Currently, the bending of PFA pipes is all done manually based on the user's experience, which presents the following problems:

[0003] 1. Inconsistent bending angles of PFA pipes can easily lead to leaks in hazardous chemical pipelines;

[0004] 2. A right-angle ruler is often used for measurement and comparison, resulting in low bending efficiency;

[0005] 3. Manual bending makes it difficult to control the force, resulting in the PFA pipe's bending angle rebound not meeting the standard.

[0006] Therefore, we propose a positioning and bending fixture for multi-size PFA pipes. Utility Model Content

[0007] The purpose of this invention is to provide a multi-size PFA pipe positioning and bending fixture to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a multi-size PFA pipe positioning and bending fixture, comprising:

[0009] A fixed base plate is provided, on which a plurality of pipe bending grooves of different depths are provided, and pipe end limiting grooves of corresponding depths are provided on the pipe bending ends of the plurality of pipe bending grooves of different depths.

[0010] PFA pipes of different diameters are bent and processed on the middle bending grooves of several pipes with different depth dimensions and the end limiting grooves of the corresponding pipes with different depth dimensions.

[0011] A limiting pressure plate is rotatably mounted on the upper end of the fixed base plate via a rotating pin. The limiting pressure plate has cooling water inlets that are evenly spaced.

[0012] A limiting closure assembly is disposed between the fixed base plate and the limiting pressure plate.

[0013] Preferably, several pipe bending grooves of different depths and pipe end limiting grooves of corresponding depths are arranged in descending order on the fixed base plate.

[0014] Preferably, a 1-6mm gap is reserved between the pipe end limiting groove and the PFA pipe with the corresponding pipe diameter.

[0015] Preferably, the uppermost point of the outer diameter of the PFA pipe when it is in the corresponding pipe middle bending groove and pipe end limiting groove is lower than the upper end surface of the fixed base plate.

[0016] Preferably, the limiting pressure plate is horizontally attached to the upper end of the fixed base plate.

[0017] Preferably, an anti-overflow frame is provided at the upper end of the limiting pressure plate corresponding to the outer side of the cooling water inlet, and the cooling water inlet is connected to the bending groove in the middle of the pipe and the limiting groove at the end of the pipe.

[0018] Preferably, the limiting closure assembly includes a fixing plate and a limiting closure block;

[0019] The fixing plate is disposed on the side of the limiting pressure plate away from the rotating pin shaft, and the lower part of the fixing plate is provided with the limiting closing block on the side facing the fixing base plate. A limiting closing groove is formed on the fixing base plate at the position corresponding to the limiting closing block.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention features a fixed base plate with pipe bending grooves and end-positioning grooves corresponding to different pipe diameters. A limiting pressure plate is rotatably mounted on the fixed base plate via a rotating pin. The fixed base plate and the limiting pressure plate are closed by a limiting closure assembly. In use, the PFA pipe is cut to a suitable length according to bending requirements. The middle bend of the PFA pipe is then heated with a hot air gun in a 360° rotation for 30 seconds. The PFA pipe is then placed in the corresponding depth bending groove according to its diameter, and both ends of the PFA pipe are bent through the heated middle section into the corresponding depth end-positioning groove. The limiting pressure plate is then quickly pressed against the PFA pipe in the fixed base plate via the rotating pin, and the limiting closure block is engaged in the limiting closure groove. The limiting pressure plate can... To prevent PFA pipes from detaching from the bending groove in the middle of the pipe and the limiting groove at the end of the pipe, and to limit the upper end of the PFA pipe, ensuring the bending stability and reliability of the PFA pipe, cooling water is then guided through the cooling water inlet on the limiting plate to the PFA pipe in the bending groove in the middle of the pipe and the limiting groove at the end of the pipe. This cools and shapes the PFA pipe into a standard right-angle bent pipe component. Finally, the bent PFA pipe can be removed. This method is compatible with bending various sizes of PFA pipes, with standardized bending forming, reducing the risk of deformation during PFA pipe bending, reducing fixture costs, and ensuring consistent bending angles. The limiting and fixing through the bending groove in the middle of the pipe and the limiting groove at the end of the pipe makes the handling of PFA pipes more stable and accurate, with consistent bending angle rebound, ensuring quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the fixed base plate of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the fixed base plate of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the limiting pressure plate of this utility model.

[0027] In the diagram: 1. Fixed base plate; 2. Pipe middle bending groove; 3. Pipe end limiting groove; 4. PFA pipe; 5. Limiting pressure plate; 6. Rotating pin; 7. Cooling water inlet; 8. Limiting closure assembly; 801. Fixed plate; 802. Limiting closure block; 9. Anti-overflow frame; 10. Limiting closure groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-5 The multi-size PFA pipe positioning and bending fixture provided by this utility model includes:

[0030] A fixed base plate 1 is provided, on which a number of pipe bending grooves 2 of different depths are provided. At the bending ends of the pipes, corresponding pipe end limiting grooves 3 of different depths are provided on the pipe bending grooves 2. The pipe bending grooves 2 of different depths and the corresponding pipe end limiting grooves 3 of different depths are arranged on the fixed base plate 1 in descending order of size.

[0031] PFA pipes 4 of different diameters are bent on several pipe bending grooves 2 and pipe end limiting grooves 3 of different depth dimensions. When the PFA pipe 4 is in the corresponding pipe bending groove 2 and pipe end limiting groove 3, the uppermost end of its outer diameter is lower than the upper end surface of the fixed base plate 1.

[0032] As shown in Table 1 below, the dimensions of the PFA pipe produced by bending the pipe with the middle bending groove 2 and the pipe end limiting groove 3 from small to large are as follows:

[0033] Table 1:

[0034]

[0035] The limiting pressure plate 5 is rotatably mounted on the upper end of the fixed base plate 1 via the rotating pin 6. The limiting pressure plate 5 is horizontally attached to the upper end of the fixed base plate 1, and cooling water inlets 7 are evenly distributed on the limiting pressure plate 5.

[0036] The limiting closure component 8 is disposed between the fixed base plate 1 and the limiting pressure plate 5. The limiting closure component 8 includes a fixed plate 801 and a limiting closure block 802. The fixed plate 801 is disposed on the side of the limiting pressure plate 5 away from the rotating pin 6. The lower part of the fixed plate 801 facing the fixed base plate 1 is provided with the limiting closure block 802. A limiting closure groove 10 is provided on the fixed base plate 1 at the position corresponding to the limiting closure block 802.

[0037] This invention features a fixed base plate 1 with pipe bending grooves 2 and pipe end limiting grooves 3 corresponding to different pipe diameters. A limiting pressure plate 5 is rotatably mounted on the fixed base plate 1 via a rotating pin 6. The fixed base plate 1 and the limiting pressure plate 5 are locked together by a limiting closure assembly 8. In use, the PFA pipe 4 is cut to a suitable length according to bending requirements. The middle bend of the PFA pipe 4 is then heated with a hot air gun in a 360° rotation for 30 seconds. The PFA pipe 4 is then placed in the pipe bending groove 2 of the corresponding depth according to its diameter. Both ends of the PFA pipe 4 are bent through the heated middle section into the corresponding depth of the pipe end limiting groove 3. The limiting pressure plate 5 is then quickly pressed against the PFA pipe 4 in the fixed base plate 1 via the rotating pin 6, and the limiting closure block 802 is engaged within the limiting closure groove 10. Plate 5 prevents the PFA pipe 4 from detaching from the bending groove 2 in the middle of the pipe and the limiting groove 3 at the end of the pipe, and limits the upper end of the PFA pipe 4 to ensure the bending stability and reliability of the PFA pipe 4. Then, cooling water is guided through the cooling water inlet 7 on the limiting plate 5 to the PFA pipe 4 in the bending groove 2 in the middle of the pipe and the limiting groove 3 at the end of the pipe to cool and shape the PFA pipe 4, so that the PFA pipe 4 is formed into a standard right-angle bent pipe part. Finally, the bent PFA pipe 4 can be taken out. It can be used for bending PFA pipe 4 of various sizes, with standard bending and forming, reducing the risk of deformation during bending of PFA pipe 4, reducing jig costs, and ensuring consistent bending angles. The limiting and fixing by the bending groove 2 in the middle of the pipe and the limiting groove 3 at the end of the pipe makes the handling of PFA pipe 4 more stable and accurate, with consistent bending angle rebound, and quality can be guaranteed.

[0038] In this embodiment, as Figure 3 As shown, a 1-6mm gap is reserved between the pipe end limiting groove 3 and the PFA pipe 4 with the corresponding pipe diameter to facilitate the placement and removal of the PFA pipe 4.

[0039] In this embodiment, as Figure 1 and Figure 2 As shown, an anti-overflow frame 9 is provided on the upper end of the limiting pressure plate 5 corresponding to the outer side of the cooling water inlet 7. The cooling water inlet 7 is connected to the bending groove 2 in the middle of the pipe and the limiting groove 3 at the end of the pipe. The anti-overflow frame 9 prevents the cooling water from overflowing.

[0040] In summary, the method of using the multi-size PFA pipe positioning and bending fixture provided in this embodiment is as follows: When using the fixture, cut the PFA pipe 4 to a suitable length according to the bending requirements. Then, heat the middle bend of the PFA pipe 4 using a hot air gun with a 360° rotating motion for 30 seconds. Next, place the PFA pipe 4 in the pipe bending groove 2 of the corresponding depth according to the pipe diameter. Bend both ends of the PFA pipe 4 through the heated middle section to the corresponding depth of the pipe end limiting groove 3. Then, quickly press the limiting pressure plate 5 against the PFA pipe in the fixed base plate 1 using the rotating pin 6. Pipe 4 is inserted, and the limiting closing block 802 is engaged in the limiting closing groove 10. The limiting pressure plate 5 can prevent PFA pipe 4 from detaching from the pipe middle bending groove 2 and the pipe end limiting groove 3, and limit the upper end of PFA pipe 4 to ensure the bending stability and reliability of PFA pipe 4. Then, cooling water is guided through the cooling water inlet 7 on the limiting pressure plate 5 to PFA pipe 4 in the pipe middle bending groove 2 and the pipe end limiting groove 3 to cool and shape PFA pipe 4, so that PFA pipe 4 is formed into a standard right-angle bent pipe part. Finally, the bent PFA pipe 4 can be taken out.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-size PFA pipe positioning and bending fixture, characterized in that, include: A fixed base plate (1) is provided with several pipe bending grooves (2) of different depths and sizes, and pipe end limiting grooves (3) of corresponding depths are provided on the pipe bending ends of the several pipe bending grooves (2) of different depths and sizes. PFA pipes (4) with different diameters are bent on several pipes with different depth dimensions in the middle bending groove (2) and the pipe end limiting groove (3) with corresponding depth dimensions. Limiting pressure plate (5), the limiting pressure plate (5) is rotatably mounted on the upper end of the fixed base plate (1) by rotating pin (6), and the limiting pressure plate (5) is provided with cooling water inlets (7) distributed at equal intervals. Limiting closure component (8), which is disposed between the fixed base plate (1) and the limiting pressure plate (5).

2. The multi-size PFA pipe positioning and bending fixture according to claim 1, characterized in that: Several pipe bending grooves (2) of different depth dimensions and pipe end limiting grooves (3) of corresponding depth dimensions are arranged in descending order on the fixed base plate (1).

3. The multi-size PFA pipe positioning and bending fixture according to claim 1, characterized in that: A 1-6mm gap is reserved between the pipe end limiting groove (3) and the PFA pipe (4) with the corresponding pipe diameter.

4. The multi-size PFA pipe positioning and bending fixture according to claim 1, characterized in that: The uppermost point of the outer diameter of the PFA pipe (4) when it is in the corresponding pipe middle bending groove (2) and pipe end limiting groove (3) is lower than the upper end surface of the fixed base plate (1).

5. The multi-size PFA pipe positioning and bending fixture according to claim 1, characterized in that: The limiting pressure plate (5) is horizontally attached to the upper end of the fixed base plate (1).

6. The multi-size PFA pipe positioning and bending fixture according to claim 1, characterized in that: An anti-overflow frame (9) is provided on the upper end of the limiting pressure plate (5) corresponding to the outer side of the cooling water inlet (7). The cooling water inlet (7) is connected to the bending groove (2) in the middle of the pipe and the limiting groove (3) at the end of the pipe.

7. The multi-size PFA pipe positioning and bending fixture according to claim 1, characterized in that: The limiting closure assembly (8) includes a fixing plate (801) and a limiting closure block (802). The fixing plate (801) is located on the side of the limiting pressure plate (5) away from the rotating pin (6). The lower part of the fixing plate (801) is provided with the limiting closing block (802) facing the fixing base plate (1). The fixing base plate (1) is provided with a limiting closing groove (10) at the position corresponding to the limiting closing block (802).

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