Tensioning device for processing glass reinforced plastic pipe hoop

Abstract

A tensioning device for glass fiber reinforced plastic pipe hoop machining relates to the technical field of glass fiber reinforced plastic pipe hoop machining and comprises a limiting partition plate, a through hole is formed in the middle of the limiting partition plate, a tensioning rod is arranged in the through hole, one end of the tensioning rod is provided with threads, the other end of the tensioning rod is provided with taper, and the taper end of the tensioning rod is sleeved with an expansion sleeve. An inner conical surface matched with the taper end of the tensioning rod is arranged in the expansion sleeve, and the outer diameter of the expansion sleeve is larger than the inner diameter of the through hole in the middle of the limiting partition plate. The problems that clamping of the glass fiber reinforced plastic thick-wall pipe is not concentric, and the machining process is complex are solved, and the machining mode is simple in process, high in concentricity and high in production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of glass fiber reinforced plastic pipe clamp processing, in particular to a tensioning device for glass fiber reinforced plastic pipe clamp processing. Background Art

[0002] The traditional production of FRP pipe clamps adopts the winding molding process, which has low production efficiency and high cost, and has a long delivery cycle when mass-produced. It is not suitable for modern industrial development. The production of FRP pipe clamps on the market currently adopts the method of first producing thick-walled FRP pipes and then cutting them. The use of lathe processing can greatly improve production efficiency and reduce production costs. However, in the existing production process, since the surface of the thick-walled FRP pipe may have uneven surfaces such as bumps and nodules after forming, the chuck clamping is not concentric during lathe processing, which will cause the processed pipe clamp to be unqualified. The current processing method is to process the end face of the pipe clamp and then fix it with a sleeve. This requires that the end face of the thick-walled pipe of the pipe clamp be processed after cutting, and the process is complicated. Therefore, it is necessary to propose a tightening device for FRP pipe clamp processing to improve processing efficiency. Utility Model Content

[0003] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a tensioning device for processing FRP pipe clamps, which can solve the technical problems of unequal clamping and complicated processing procedures during the processing of existing FRP pipe clamps.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A tensioning device for processing glass fiber reinforced plastic pipe clamps includes a limiting partition, a through hole is opened in the middle of the limiting partition, a tensioning rod is arranged in the through hole, one end of the tensioning rod is provided with a thread, and the other end is provided with a taper, an expansion sleeve is provided on the outer side of the tapered end of the tensioning rod, and an inner conical surface matching the tapered end of the tensioning rod is provided in the expansion sleeve, and the outer diameter of the expansion sleeve is larger than the inner diameter of the through hole in the middle of the limiting partition.

[0006] Preferably, the expansion sleeve is a frustum structure formed by splicing two or more split plates, and a plurality of arc-shaped grooves are provided on the outer surface of each split plate. A fixing ring is provided in the arc-shaped groove, and the fixing ring is elastic.

[0007] Preferably, the expansion sleeve is made of metal or plastic.

[0008] Compared with the existing technology, the beneficial effects of the present invention are: the technical solution of the present invention adopts the method of internal expansion to tighten and fix the thick-walled fiberglass reinforced plastic tube, thereby solving the problem of non-concentricity of the clamped thick-walled fiberglass reinforced plastic tube and complicated processing procedures. This processing method has simple procedures, high concentricity and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0010] Figure 1 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0011] Description of reference numerals:

[0012] 1-Tension rod, 2-Expansion sleeve, 3-Fixed ring, 4-Limiting partition. DETAILED DESCRIPTION

[0013] The following describes the invention of the present invention in detail by way of examples in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Example

[0014] like Figure 1 As shown, the utility model discloses a tensioning device for processing glass fiber reinforced plastic pipe clamps, including a limiting partition 4, the limiting partition 4 is a circular structure and a through hole is opened in the middle thereof, a tensioning rod 1 is provided in the through hole, the tensioning rod 1 is movably connected in the through hole, a guide strip is provided on the rod wall of the tensioning rod 1, and a guide groove is provided on the inner wall of the through hole, the guide strip cooperates with the guide groove to guide the movement of the tensioning rod 1; one end of the tensioning rod 1 is provided with a thread, and the other end is provided with a taper, the outer side of the tapered end of the tensioning rod 1 is provided with an expansion sleeve 2, and the material of the expansion sleeve 2 is aluminum alloy or nylon; the expansion sleeve 2 is provided with an inner conical surface matching the tapered end of the tensioning rod 1, and the outer diameter of the expansion sleeve 2 is larger than the inner diameter of the through hole in the middle of the limiting partition 4, which is conducive to limiting the movement of the expansion sleeve 2.

[0015] The expansion sleeve 2 is a frustum structure formed by splicing three split plates. Three arc-shaped grooves are provided on the outer surface of each split plate. A fixing ring 3 is provided in the arc-shaped groove. The fixing ring 3 is elastic. The setting of the fixing ring 3 is conducive to fastening the expansion sleeve 2 to the conical end of the tensioning rod 1. At the same time, different models of expansion sleeves 2 can be replaced according to the different inner diameters of the glass fiber reinforced plastic thick-walled tubes to process different glass fiber reinforced plastic pipe clamps.

[0016] During assembly, first fix the limit partition 4 to the CNC lathe, pass the threaded end of the tensioning rod 1 through the through hole on the limit partition 4 and connect it to the cylinder piston rod on the CNC lathe, then install the expansion sleeve 2 to the tapered end of the tensioning rod 1, and fasten the expansion sleeve 2 and the tensioning rod 1 through the fixing ring 3; finally, put the fiberglass thick-walled tube onto the expansion sleeve 2.

[0017] Working principle: During processing, the cylinder contracts, and the piston rod of the cylinder drives the tensioning rod 1 to move to the left, and then drives the expansion sleeve 2 to move to the left until the expansion sleeve 2 contacts the limit partition 4, and the expansion sleeve 2 stops moving. Under the action of the tension, the tapered end of the tensioning rod 1 will open the expansion sleeve 2, thereby tightening the FRP thick-walled tube and processing its outer surface.

[0018] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and application concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A tensioning device for processing glass fiber reinforced plastic pipe clamps, characterized by: It comprises a limiting partition (4), a through hole is opened in the middle of the limiting partition (4), a tension rod (1) is arranged in the through hole, one end of the tension rod (1) is provided with a thread, and the other end is provided with a taper, an expansion sleeve (2) is provided on the outer side of the tapered end of the tension rod (1), an inner conical surface matching the tapered end of the tension rod (1) is provided in the expansion sleeve (2), and the outer diameter of the expansion sleeve (2) is larger than the inner diameter of the through hole in the middle of the limiting partition (4).

2. A tensioning device for processing a glass fiber reinforced plastic pipe clamp as claimed in claim 1, characterized in that: The expansion sleeve (2) is a truncated cone structure formed by splicing two or more split plates. A plurality of arc-shaped grooves are provided on the outer surface of each split plate. A fixing ring (3) is provided in the arc-shaped groove. The fixing ring (3) is elastic.

3. A tensioning device for processing a glass fiber reinforced plastic pipe clamp as claimed in claim 1, characterized in that: The material of the expansion sleeve (2) is metal or plastic.

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