CN204855336U - Test device is peeled off to PE electric smelting subassembly - Google Patents

Abstract

A PE electrofusion component peeling test device, the device includes a tensile testing machine, a PE electrofusion component test sample clamping mechanism is arranged on the workbench of the tensile testing machine, and the peeling test is performed using the tensile testing machine sample, to obtain peeling results. Compared with the extrusion stripping method, its operation is more convenient and fast, and the obtained stripping results are more real and accurate. According to the results, the bonding strength between the electrofusion sleeve and the pipe can be judged, the welding quality of the components can be quantitatively analyzed, and conclusions can be drawn .

Description

A Peeling Test Device for PE Electrofusion Components

technical field

The utility model belongs to the technical field of performance testing of PE electrofusion components, and relates to a stripping test device for PE electrofusion components, which is mainly used for the stripping test of samples of PE electrofusion components of DN63 and below.

Background technique

According to the test method of GB/T19806-2005 "Extrusion Peeling Test of Polyethylene Electrofusion Components", usually, the method of peeling off the samples of DN63 and below PE electrofusion components is to use compression testing machine and other institutions to test PE electrofusion components. The PE pipe part was extruded, but the test results were not satisfactory. The electrothermal fusion surface of the electrofusion sleeve and the PE pipe could not be effectively peeled off, so it was impossible to make qualitative and quantitative analysis of the welding quality of the components.

Contents of the invention

The purpose of this utility model is to provide a peeling test device for PE electrofusion components of DN63 and below, which is simple to operate, saves trouble and effort, is convenient and practical, and is aimed at the above-mentioned shortcomings of the background technology.

The technical scheme of the utility model is: a PE electrofusion component peeling test device, the device includes a tensile testing machine, a PE pipe component test sample clamping mechanism is arranged on the workbench of the tensile testing machine, and the The tensile testing machine is used to peel the test sample and obtain the tensile value required for peeling.

The test sample clamping mechanism includes a base and a sample clamping seat. The base is fixed on the workbench of the tensile testing machine. The sample clamping seat is installed on the base, and its joint is a dovetail tenon and groove matching structure. The sample clamping seat can slide left and right on the base; there are pressure blocks and set screws on the top surface of the sample mounting seat, which are used to fix the test sample. During the test, the end of the test sample is clamped by the chuck of the tensile testing machine. hold.

The beneficial effects of the utility model are: the device uses a tensile testing machine to peel off test samples. Compared with extrusion peeling, its operation is more convenient and quicker, and the obtained peeling results are more real and accurate, and can judge the quality of electrofusion sleeves and pipes. Combined with the strength, a quantitative analysis of the welding quality of the component is made.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the structural diagram of this device;

Figure 2 is the A-direction view of Figure 1 (for clarity, the test sample is not drawn in the figure);

Meanings of codes in the figure: 1—working table of tensile testing machine; 2—clamp of tensile testing machine; 3—base; 4—chute; 5—sample clamping seat; 6—briquetting block; 7—set screw; 8—the electrofusion sleeve layer of the PE pipe assembly; 81—the pipe layer of the PE pipe assembly.

Detailed ways

Referring to Figures 1 and 2, the PE electrofusion component peeling test device includes a tensile testing machine, and a PE electrofusion component test sample clamping mechanism is arranged on the workbench of the tensile testing machine. To peel the test sample and obtain the peeling result.

The test sample clamping mechanism includes a base 3 and a sample clamping seat 5, the base 3 is fixed on the workbench 1 of the tensile testing machine, the base 3 has a dovetail groove 4, and the bottom of the sample mounting seat 5 has a dovetail tenon , assembled in the dovetail groove 4, so that the sample mount 5 can slide left and right; the top surface of the sample mount 5 has a pressure block 6 and a set screw 7 for fixing the test sample. During the test, the end of the test sample is clamped by the chuck 2 of the tensile testing machine.

The using method of the present utility model is as follows:

For the convenience of clamping, the PE electrofusion component is cut into a long strip test sample, the sample width matches the top surface width of the clamping seat, and the pipe layer and the electrofusion sleeve layer are torn to a certain length from one end of the sample.

Put the sample on the clamping seat, the pipe layer 81 is upward, the electrofusion sleeve layer 8 is downward, and the tear is located between the two pressure blocks 6, in which the pressure block on the left side of the figure presses the pipe layer before the tear 81, and is fixed by its screw, and another pressing block presses the sample after tearing, and is fixed by its screw.

The end of the torn pipe layer 81 is clamped by the chuck 2 of the testing machine, and then the clamping seat 5 is moved to the left side of the chute 4, so that the tear is not facing the chuck 2, and the 81 torn pipe layers are tight.

Turn on the testing machine, make the chuck pull the pipe layer 81 upwards, and continue tearing from the welding surface of the electrofusion sleeve layer 8. The tensile value measured by the tensile testing machine is the value of the peeling force. The bonding strength of the melting sleeve and the pipe is used to quantitatively analyze the welding quality of the components.

It should be noted that if the clamping seat is set directly below the chuck of the testing machine, the chuck will have a pulling force directly above the pipe part. In this way, the pipe layer 81 will easily break during the stripping process, and it will not be possible to realize the electrical Fused sleeve layer for peeling purposes.

Claims (2)

1. a PE electric smelting assembly peel test device, it is characterized in that, this device comprises a cupping machine, and the worktable of this cupping machine is furnished with PE pipe assembly test sample clamping mechanism, utilize cupping machine to carry out disbonded test sample, and obtain the value of thrust needed for peeling off.

2. PE electric smelting assembly peel test device as claimed in claim 1, it is characterized in that, described test specimen clamping mechanism comprises base, sample clamping seat, described base is fixed on to be stretched on the worktable of testing machine, described sample clamping seat is arranged on base, its joint portion is dovetail, slot fit structure, and sample clamping seat can horizontally slip on base; Described sample mount pad end face has briquetting and holding screw, and for fixation test sample, during test, the termination of test specimen is by the grips of cupping machine.