阅读说明：本技术 聚乙烯管道热熔焊接接头翻边切除工具 (Polyethylene pipeline hot-melt welding connects turn-ups excision instrument ) 是由 张国强 李广印 张官正 于 2021-09-09 设计创作，主要内容包括：本发明公开一种聚乙烯管道热熔焊接接头翻边切除工具,涉及压力管道安装领域。该装置包括框架、翻边切刀,所述框架为门字形结构,框架上侧边内侧设有可上下移动的活动滚轮,活动滚轮通过两个穿过框架顶部的紧定螺栓限定位置,框架下侧边内侧设有第一固定滚轮,翻边切刀的后部为刀杆,前端为刀头,刀杆通过切刀紧固螺栓固定于框架左侧边上,刀头位于框架内部,所述框架左侧边内侧还设有第二固定滚轮,第二固定滚轮位于翻边切刀下方,所述框架上侧边和下侧边的外侧对称设置有手柄。本发明解决了实际施工过程中聚乙烯管道热熔焊接接头翻边切除不连续、饱满性差的弊端；简单易用,翻边切除连续性好,高效省力。(The invention discloses a flanging cutting tool for a polyethylene pipeline hot-melt welding joint, and relates to the field of pressure pipeline installation. The device includes frame, turn-ups cutter, the frame is door font structure, and the side inboard is equipped with the movable roller that can reciprocate on the frame, and the movable roller passes the tight set bolt limit position at frame top through two, and the side inboard is equipped with first fixed roller under the frame, and the rear portion of turn-ups cutter is the cutter arbor, and the front end is the tool bit, and the cutter arbor passes through cutter fastening bolt to be fixed in frame left side edge, and the tool bit is located inside the frame, frame left side inboard still is equipped with second fixed roller, and second fixed roller is located turn-ups cutter below, the outside symmetry of side and lower side is provided with the handle on the frame. The invention solves the defects of discontinuous flanging cutting and poor plumpness of the polyethylene pipeline hot-melting welding joint in the actual construction process; the method is simple and easy to use, the continuity of flanging cutting is good, and the method is efficient and labor-saving.)

1. The utility model provides a polyethylene pipe hot melt welded joint turn-ups excision instrument, includes frame (1), turn-ups cutter (4), its characterized in that: frame (1) is Contraband font structure, and frame (1) side inboard is equipped with movable roller (5) that can reciprocate, and movable roller (5) are fixed a position through two tight set bolt (3) that pass frame (1) top, and frame (1) side inboard is equipped with first fixed roller (9) down, and the rear portion of turn-ups cutter (4) is the cutter arbor, and the front end is the tool bit, and the cutter arbor is fixed in frame (1) left side edge through cutter fastening bolt (6), and the tool bit is located inside frame (1).

2. The polyethylene pipe hot-melt welding joint flanging cutting tool according to claim 1, is characterized in that: the inner side of the left side edge of the frame (1) is further provided with a second fixed roller (10), and the second fixed roller (10) is located below the flanging cutter (4).

3. The polyethylene pipe hot-melt welding joint flanging cutting tool according to claim 2, is characterized in that: handles (2) are symmetrically arranged on the outer sides of the upper side and the lower side of the frame (1).

4. The polyethylene pipe hot-melt welding joint flanging cutting tool according to claim 3, characterized in that: the shafts of the movable roller (5), the first fixed roller (9) and the second fixed roller (10) are arranged at equal intervals in pairs.

5. The polyethylene pipe hot-melt welding joint flanging cutting tool according to claim 4, is characterized in that: the tool bit of the flanging cutter (4) is flush with the tangent line of the polyethylene pipeline (8).

Technical Field

The invention relates to the field of pressure pipeline installation, in particular to a flanging cutting tool for a polyethylene pipeline hot-melt welding joint.

Background

When the polyethylene gas pipeline is installed, according to the requirements of CJJ63-2005 Town gas distribution engineering construction and acceptance Standard 7.2.3: after the welding joints of hot melting connection are connected, 100% of appearance inspection and 10% of flanging cutting inspection are carried out, and the requirements of the national current standard CJJ63 polyethylene gas pipeline engineering technical regulation are met. CJJ63 polyethylene gas pipeline engineering technical Specification 5.2.4-4 requires that the welding flanging at the outer part is cut off by using a special tool under the condition of not damaging the pipe and the joint, 180-degree back bending tests are carried out at intervals of 50mm, cracking and cracks do not exist, and a fusion line cannot be exposed at the joint. Due to the installation and acceptance requirements, the flanging of the polyethylene hot-melt connector is completely cut off, the continuity and the fullness are good, and the requirements of a back bending test can be met. As shown in figure 1, the existing welding joint flanging cutting tool has poor fixation for a pipe, needs a hammering cutting tool to cut the flanging, often causes poor continuity of the flanging, has poor plumpness of the cut flanging, cannot completely cut off the root of the flanging, leaves a boss, and cannot meet the requirements of a backfolding test; the flanging cutting test is the most direct and effective judgment means for verifying the welding quality of the welding joint of the polyethylene pipeline at the present stage, and the completeness and the plumpness of the cut flanging directly determine whether the welding quality of the welding joint can be checked.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a flanging cutting tool for a polyethylene pipeline hot-melting welding joint, which can overcome the difficulty that the flanging of the polyethylene pipeline hot-melting welding joint cannot be completely cut in the prior art, and can overcome the defects that the prior tool cannot be fixed, and the continuity and the fullness of the cut flanging cannot meet the requirements.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a polyethylene pipe hot melt welded joint turn-ups excision instrument, includes frame, turn-ups cutter, the frame is Contraband font structures, and the side inboard is equipped with the movable roller that can reciprocate on the frame, and movable roller is through two tight set bolt limit positions that pass the frame top, and the frame side inboard is equipped with first fixed roller down, and the rear portion of turn-ups cutter is the cutter arbor, and the front end is the tool bit, and the cutter arbor passes through cutter fastening bolt to be fixed in frame left side edge, and the tool bit is located inside the frame.

Furthermore, a second fixed roller is further arranged on the inner side of the left side edge of the frame and is located below the flanging cutter.

Furthermore, handles are symmetrically arranged on the outer sides of the upper side and the lower side of the frame.

Furthermore, the shafts of the movable roller, the first fixed roller and the second fixed roller are arranged at equal intervals in pairs.

Further, the tool bit of turn-ups cutter and polyethylene pipeline tangent line parallel and level.

Compared with the prior art, the invention has the beneficial technical effects that: the flanging cutting tool for the polyethylene pipeline hot-melt welding joint solves the defects of discontinuous flanging cutting and poor plumpness of the polyethylene pipeline hot-melt welding joint in the actual construction process; the method is simple and easy to use, the continuity of flanging cutting is good, and the method is efficient and labor-saving.

Drawings

FIG. 1 is a schematic view of a prior art tool for cutting off a flange of a welded joint of a polyethylene pipe;

FIG. 2 is a schematic view of a flanging cutting tool for a polyethylene pipe thermal welding joint according to an embodiment of the invention;

FIG. 3 is a front view of a flanging cutting tool for a polyethylene pipe thermal welding joint according to an embodiment of the invention;

reference numerals: 1-frame, 2-handle, 3-fastening bolt, 4-flanging cutter, 5-movable roller, 6-cutter fastening bolt, 7-hot-melt joint flanging, 8-polyethylene pipeline, 9-first fixed roller and 10-second fixed roller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 2-3, the flanging cutting tool for the polyethylene pipe 8 hot-melt welding joint provided in this embodiment includes a frame 1 and a flanging cutter 4, where the frame 1 is in an Contraband-shaped structure, a movable roller 5 capable of moving up and down is disposed on an inner side of an upper side of the frame 1, the movable roller 5 is fixed at a position by two fastening bolts 3 penetrating through a top of the frame 1, a first fixed roller 9 is disposed on an inner side of a lower side of the frame 1, a rear portion of the flanging cutter 4 is a cutter bar, a front end of the flanging cutter 4 is a cutter head, the cutter bar is fixed on a left side edge of the frame 1 by a cutter fastening bolt 6, and the cutter head is located inside the frame 1.

Tightly decide bolt 3 and pass and just in time press on movable roller 5's epaxial behind the frame 1 top, and the tool bit passes through about the screw thread transmission effect, and cutter fastening bolt 6 is adjusted and is fixed the length that the cutter arbor stretches into in the frame 1, and the tool bit can more easily cut into hot melt joint turn-ups 7 on the polyethylene pipe 8.

In order to improve the stability of the rotation of the polyethylene pipe in the frame 1 and to make the rotation of the device easier, the inner side of the left side edge of the frame 1 is also provided with a second fixed roller 10, and the second fixed roller 10 is positioned below the flanging cutter 4; the polyethylene pipeline 8 is fixed through three groups of rollers of the movable roller 5, the first fixed roller 9 and the second fixed roller 10, so that the polyethylene pipeline 8 can only rotate among the rollers.

Handles 2 are symmetrically arranged on the outer sides of the upper side and the lower side of the frame 1, and the handles 2 are arranged to be turned over and cut off more efficiently and more effectively.

Two liang of equidistance settings of axle of movable roller 5, first fixed rolling wheel 9, second fixed rolling wheel 10, the turn-ups cutter 4's tool bit and 8 tangent lines parallel and level of polyethylene pipe guarantee that the turn-ups excision is full.

The working principle and the using method of the invention are as follows: loosening fastening bolt 3, lifting movable roller 5 capable of moving up and down, putting polyethylene pipe 8, aligning flanging cutter 4 with polyethylene pipe 8 tangent line, putting down movable roller 5, tightening fastening bolt 3, making fastening bolt 3 tightly fix movable roller 5 shaft, then polyethylene pipe 8 rotates under the supporting action of movable roller 5, first fixed roller 9, second fixed roller 10, tightening cutter fastening bolt 6 to make cutter head and pipe tangent line parallel and level, and cutting the cutter head of flanging cutter 4 into flanging (pipe tangent line position), ensuring flanging cutting, tightening cutter fastening bolt 6, preventing cutter movement, rotating handle 2, rotating a circle can completely cut the flanging.

The above description is of the preferred embodiment of the present invention and is not intended to limit the invention, and those skilled in the art may make modifications and improvements within the spirit and principle of the present invention.