CN103029115B - Thermoplastic plastic pipe detection scriber - Google Patents

Abstract

The invention discloses a scribing device for detecting thermoplastic pipes, which comprises a circular base, a rotating disk, a connecting rod, a vertical rod and two scribing pen fixtures. Placed on the bearing, there are chutes on the two mutually perpendicular diameter directions on the rotating disk, and sliding clips for positioning and clamping the pipe are arranged in the chutes, and the circular base is connected with the vertical rod through a connecting rod, and the connecting rod It consists of a small column, and there are two sliders on the upper and lower sides of the column. The vertical surface of each slider is connected to the column, and the horizontal surface of the slider is connected to the marking pen holder. The marking pen holder includes a connecting rod and a pen holder. A telescopic device is welded at one end of the connecting rod to connect the pen holder. The invention has the advantages of simple structure, convenient use, high scribing precision, improved scribing work efficiency, and fast and accurate longitudinal retraction rate test and external impact resistance test of thermoplastic pipes.

Description

Scribe for Thermoplastic Pipe Inspection

technical field

The invention relates to a scriber, in particular to a scriber for testing thermoplastic pipes.

Background technique

When conducting longitudinal shrinkage and external impact resistance tests of thermoplastic pipes, it is necessary to draw fixed-distance, smooth and continuous circumferential lines or evenly divided tangent lines on thermoplastic pipes with regular shapes and smooth surfaces, especially for The longitudinal retraction rate test GB/T6671-2001 stipulates that a scribe should be used to mark the line. However, there is no dedicated plastic pipe longitudinal retraction test scriber on the market at present, so most testing agencies usually use marker pens and vernier calipers to complete it by hand. The above method will happen in actual use as follows: During the sample preparation, the pipe is difficult to fix, resulting in defects such as insufficient closure of the circumferential lines and unequal spacing between two parallel circumferential lines, resulting in the preparation of the sample not meeting the requirements specified in GB/T6671-2001; when doing the external impact resistance test, at least It was completed by two people, and the equal division of the circumference was not accurate enough, and the tangent lines were not parallel, which resulted in the preparation of the sample not meeting the requirements stipulated in GB/T14152-2001; when operating in large quantities, it was time-consuming, labor-intensive, and labor-intensive. It is cumbersome and fails to achieve the intended effect, and even leads to misjudgment of the test results of the product in severe cases. Therefore, it is necessary to provide a new technical solution to solve the above problems.

Contents of the invention

The object of the present invention is to provide a scriber for detecting thermoplastic pipes with high scribe accuracy. It overcomes the shortcomings of the existing freehand marking methods such as uneven marking, incoherent marking, and inaccurate spacing.

The technical scheme adopted in the present invention is:

A scriber for thermoplastic pipe testing, including a circular base, a rotating disc, a connecting rod, a vertical rod and two scriber holders, the top of the circular base is connected to a cylinder, and a bearing is arranged inside the cylinder. The rotating disc is placed on the bearing, the edge of the rotating disc is provided with an angle scale line, two chutes are opened on the two mutually perpendicular diameter directions of the rotating disc, and a positioning clamp is arranged in the chute. The sliding clip of the pipe, the sliding clip is fixed with the rotating disc through the fixing piece, the circular base is connected with the vertical rod through the connecting rod, the connecting rod includes a small column, and a tight column is arranged on the top of the small column. Firmware, described pole is provided with two slide blocks up and down, and the vertical surface of each slide block is strung on the described pole, and the horizontal plane of the slide block is strung on the described scribe pen holder, and the scribe line The pen holder includes a connecting rod and a pen holder. One end of the connecting rod is welded with a telescopic device to connect the pen holder. The top of the pen holder is respectively provided with a fastener for fixing the marking pen.

A through screw hole is provided at the center of the rotating disk.

The shape of the sliding clip is "L".

The fixing parts, fastening parts and tightening parts are all hexagon socket head screws.

The connecting rod and the vertical rod are vertically connected by screws.

The telescopic device includes a telescopic rod and a spring, the spring is sleeved on the telescopic rod, and the telescopic rod is fixed to one end of the connecting rod.

Beneficial effects of the present invention: the present invention is suitable for the preparation of longitudinal retraction rate and external impact resistance performance test samples of thermoplastic pipes. Reduce the labor intensity of operators, improve the efficiency of scribing work, and ensure the rapidity and accuracy of the longitudinal retraction rate test and external impact resistance test of thermoplastic pipes.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the structure of the rotating disc of the present invention.

Among them: 1. Circular base, 2. Rotating disc, 3. Connecting rod, 4. Upright rod, 5. Marking pen fixture, 6. Cylinder, 7. Bearing, 8. Through screw hole, 9. Angle Scale line, 10, chute, 11, sliding clip, 12, hexagon socket head cap screw, 13, small column, 14, screw, 15, slider, 16, connecting rod, 17, pen holder fixture, 18, telescopic rod, 19. Spring.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, the scriber for detecting thermoplastic pipes of the present invention includes a circular base 1, a rotating disk 2, a connecting rod 3, a vertical rod 4 and two scriber holders 5, circular A cylinder 6 is connected to the top of the base 1, and a bearing 7 is arranged in the cylinder 6, and the rotating disk 2 is placed on the bearing 7. The center of the rotating disk 2 is provided with a through screw hole 8, and the edge of the rotating disk 2 is provided with Angle scale line 9, two chute 10s are provided on the two mutually perpendicular diameter directions on the rotating disc 2, and an "L"-shaped sliding clip 11 for positioning and clamping the pipe is arranged in the chute 10, and the sliding clip 11 passes through the inner The hexagonal screw 12 is fixed to the rotating disc 2, the circular base 1 is connected to the vertical rod 4 through the connecting rod 3, and the connecting rod 3 and the vertical rod 4 are vertically connected by the screw 14. The connecting rod 3 includes a small column 13, and the small column 13 tops are provided with an inner hexagonal screw 12, and this inner hexagonal screw 12 is in order to fix the rotating disk 2 when dividing the scale line equally, and the upright bar 4 is provided with two sliders 15 up and down, and each slider 15 vertical surface strings on the vertical surface. On the bar 4, the slide block 15 is connected horizontally on the marking pen holder 5. The marking pen holder 5 includes a connecting rod 16 and a pen clamping clamp 17. A telescopic device is welded at one end of the connecting rod 16 to connect the pen clamping clamp 17. The top of the pen holder 17 is respectively provided with a hexagon socket head screw 12 in order to fix the marking pen. The telescopic device includes a telescopic rod 18 and a spring 19.

With the center of the circular base 1 as the reference point, the pipe is fixed by four L-shaped sliding clips 11 arranged on the rotating disk 2 in the direction of diameter perpendicular to each other, and two squares are used to assist to ensure the thermoplasticity. The plastic tube is aligned with the center of the entire unit. It not only meets the needs of thermoplastic pipes with different diameters, but also ensures that no eccentricity occurs during rotation, and can only achieve the effect of fixing pipes when dividing the scale line. The invention only needs one person to operate, put the cut thermoplastic pipe on the rotating disc 2, fix it with the L-shaped sliding clip 11, and correct it with a square, and then fix the two marking pens on the marking pen fixture On the device 5, measure the distance between the two nibs, loosen the hexagon socket screw 12 that fixes the rotating disc 2, and rotate the rotating disc 2 to complete the required scale for the longitudinal retraction rate.

When drawing the equal division scale line used for the external impact resistance performance test, the steps of fixing the thermoplastic pipe are the same as above, fix the rotating disk 2 on a certain scale, put a marking pen holder 5 on the bottom of the vertical pole 4 and fix it , another scriber fixture 5 loosens the fixed hexagonal socket head screw 12, and moves the scribe upwards from the bottom of the pole 4 (for example, to draw four lines, first align the tip of the scriber to the position of the rotating disc 2 Draw a line on the 0° scale, loosen the inner hexagonal screw 12 that fixes the rotating disc 2 after marking, and then align the tip of the marking pen to the 90° scale of the rotating disc 2 to draw a line, and so on).

When marking the line in the present invention, the pipe only needs to be clamped once (two tests are done twice), and the purpose of two fixed-distance parallel circumferential lines or average equal-divided scale lines can be completed, which is fast, convenient, easy to operate, and accurate in positioning. The advantages; the processing accuracy requirements of the whole device are general, the processing technology is simple, and has the advantages of low processing cost.

Claims (4)

1. thermoplastic plastic pipe detection scriber, comprise cup dolly, rotating circular disk, connecting rod, vertical rod and two bow pen clamp devices, it is characterized in that: described cup dolly top connects a cylinder, a bearing is provided with in this cylinder, described rotating circular disk is placed on this bearing, described rotating circular disk edge is provided with angle index line, two mutual perpendicular diameter directions have chute to described rotating circular disk, " L " type slip intermediate plate of positioning clamping tubing is provided with in this chute, described slip intermediate plate is fixed by fixture and rotating circular disk, described cup dolly is connected with vertical rod by connecting rod, described connecting rod comprises a post, described post top is provided with a securing member, described vertical rod has two slide blocks, each slide block vertical plane string is in described vertical rod, described slide block horizontal plane string is on described bow pen clamp device, described bow pen clamp device comprises connecting rod and pen clip fixture, a retractor device is welded to connect described pen clip fixture in described connecting rod one end, the top of described pen clip fixture is respectively equipped with a tightening piece in order to fixing bow pen, described retractor device comprises expansion link and spring, described spring is placed on expansion link, described expansion link is fixed on connecting rod one end.

2. thermoplastic plastic pipe detection scriber according to claim 1, is characterized in that: described rotating circular disk center is provided with through screw.

3. thermoplastic plastic pipe detection scriber according to claim 1, is characterized in that: described fixture, securing member and tightening piece are hexagon socket head cap screw.

4. thermoplastic plastic pipe detection scriber according to claim 1, is characterized in that: described connecting rod is connected by screw is vertical with between vertical rod.