CN104807683B - A kind of cable cover(ing) apparatus for cutting insulation layer - Google Patents

Abstract

The invention relates to a cutting device, in particular to a cutting device for the insulating layer of a cable sheath for obtaining test samples for testing cable aging performance. Its structure includes a platform base, on which a compression platform capable of moving up and down is provided for compressing cables, a V-shaped groove is provided at the top of the compression platform, and a V-shaped groove is provided at the bottom of the V-shaped groove. There is a slit, and the cutting knife is arranged above the pressing table, and the blade of the cutting knife passes through the slit of the V-shaped groove of the pressing table, and can move along the slit to remove the insulating layer of the cable sheath. Cut along the axis. The device of the invention has the advantages of simple structure, convenient operation, greatly improved sampling success rate, and reduced sampling working time.

Description

A cable sheath insulation cutting device

technical field

The invention relates to a cutting device, in particular to a cutting device for the insulating layer of a cable sheath for obtaining test samples for testing cable aging performance.

Background technique

In nuclear power plants, a large number of various cables are used, including signal cables, control cables, power cables, etc. Due to the certain radioactive dose and temperature in the use environment of the cable, the aging condition of the cable in the use environment determines the service life of the cable in the nuclear power plant. In order to ensure the safety of nuclear power plants during their service, nuclear-grade cables need to be subjected to radiation and thermal aging research before use. The change of tensile properties of cable sheath and insulation layer is an important index to evaluate the aging performance of cables. Due to the relatively high processing requirements for the sample in the tensile test, the integrity and uniformity of the sheath and the insulating layer must be ensured during the sample preparation process.

At present, due to the wide variety of cables that need to be tested, there are many types of materials, types, sizes, and packaging methods of the insulating sheath. Cover and insulating layer to ensure the success rate and quantity of sample preparation of tensile samples, while improving the efficiency of sample preparation. Because the wires in the cable are wound, the wires are twisted after cutting the cable sheath. Manual sampling cannot ensure that the cuts are neat. Not only is the efficiency low, but the accuracy of the samples made is poor, resulting in performance test results. Scattered and less regular. In order to improve the sample preparation efficiency and sample preparation accuracy, according to the characteristics of the cable, a cable sheath insulation layer cutting device is designed to ensure the effective conduct of the test.

Contents of the invention

The object of the present invention is to provide a cable sheath insulating layer cutting device, which has a simple structure, convenient operation, greatly improved sampling success rate and reduced sampling working time.

The technical scheme of the present invention is as follows: a cable sheath insulating layer cutting device, including a platform base, on which a pressing table capable of moving up and down for pressing cables is arranged, and the top end of the pressing table A V-shaped groove is provided, a slit is arranged at the bottom of the V-shaped groove, a cutting knife is arranged above the pressing table, and the blade of the cutting knife passes through the slit of the V-shaped groove of the pressing table , and can move along the slit to cut the insulating layer of the cable sheath axially.

Further, the above-mentioned cable sheath insulation layer cutting device, wherein, the horizontal surface of the upper part of the platform base is provided with several parallel slots; the vertical section of the pressing table is "Λ" shaped, and the pressing The two sides of the tight platform are respectively composed of several inserting plates, and the inserting plates can be respectively inserted into the slots on the horizontal surface of the platform base.

Further, the above-mentioned cable sheath insulation layer cutting device, wherein, on the horizontal surface of the platform base and each plug plate of the pressing table, there are long slots for the screw to pass through, and the pressing table It is fixed in the pressing position by the screw rod passing through the long slot and the locking nut.

The beneficial effects of the present invention are as follows: the present invention provides a cutting device suitable for cable sheaths and insulating layers of different sizes, the device can compress the cable so that the cable is in a straight line; then use a cutting knife to cut along the axial direction of the cable, Complete the sampling of the cable sheath and insulation layer, the device not only meets the requirements of the test standard, but also facilitates the clamping of the sample, is simple and reliable, and has high working efficiency.

Description of drawings

Fig. 1 is the structural representation of cable sheath insulating layer cutting device in the specific embodiment of the present invention;

Fig. 2 is the schematic diagram of the end face of the platform base in the specific embodiment;

Fig. 3 is the schematic diagram of the end face of the compression table in the specific embodiment;

Fig. 4 is a schematic view of the end face of the cutting knife in the specific embodiment.

In the figure: 1. Platform base, 2. Press table, 3. Cutting knife, 4. Nut, 5. Screw, 6. Long slot (located at the platform base), 7. Long slot (located at the press table), 8. V-groove, 9. blade.

detailed description

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

As shown in FIG. 1 , the cable sheath insulating layer cutting device provided by the present invention is mainly composed of a platform base 1 , a pressing table 2 and a cutting knife 3 . The platform base 1 is provided with a compacting table 2 that can move up and down and is used to compress the cables. The top of the compacting table 2 is provided with a V-shaped groove, and a slit is provided at the bottom of the V-shaped groove. The cutting knife 3 is arranged on the Above the pressing table 2, the blade of the cutting knife 3 passes through the slit of the V-shaped groove of the pressing table, and can move along the slit (that is, move in the direction of the arrow in Figure 1) to remove the cable sheath The insulating layer is cut along the axial direction.

In this embodiment, the platform base 1 is an n-shaped structure, including an upper horizontal platform and two vertical side walls, as shown in FIG. 2 . The upper horizontal surface of the platform base 1 has several slots parallel to each other, and a long groove 6 that runs through the entire surface is also provided on the horizontal surface for horizontally inserting the screw rod 5 .

The pressing platform 2 is plugged into the upper horizontal surface of the platform base 1, and the vertical section is in the shape of "Λ", with a V-shaped groove 8 at the top, and a slit at the bottom of the V-shaped groove 8, as shown in Figure 3 . The two sides of the pressing platform 2 are respectively composed of several inserting plates, and the inserting plates can be respectively inserted into slots on the horizontal surface of the platform base 1, as shown in FIG. 1 . Each inserting plate of the compression table 2 is also provided with a long slot 7 for the screw rod 5 to pass through, and the screw rod 5 horizontally passes through the long slot 6 of the platform base and the long slot 7 of the compression table. After the position, by tightening the nut 4, the compression table is fixed.

The cutting knife 3 is placed on the V-shaped groove 8 on the top of the pressing table 2, and the bottom of the cutting knife has a V-shaped protrusion. As shown in Figure 4, this protrusion is compatible with the V-shaped groove 8 of the pressing table, so that The cutting knife 3 can be stably arranged above the pressing table 2 . A blade 9 extends from the bottom of the cutting knife, and the blade 9 can pass through the slit at the bottom of the V-shaped groove 8 at the top of the pressing table. Moreover, under the operation of the operator, the cutting knife 3 can slide along the V-shaped groove, as indicated by the arrow in FIG. 1 .

The specific operation process of the cable sheath insulating layer cutting device of the present invention is as follows:

First cables (can be of different lengths and different diameters) are placed between the platform base 1 and the pressing table 2, and the cables pass through the triangular space between the pressing table 2 and the horizontal surface of the platform base 1. By adjusting the pressing table 2, the cable is pressed down to straighten the cable, and then the fixing screw 5 is locked by the nut 4 to position the pressing table. By manually operating the cutting knife 3, it moves along the V-shaped groove at the top of the pressing table, and passes through the blade 9 at the bottom of the V-shaped groove to cut the sheath insulation layer of the cable in the axial direction. Loosen the nut 4, remove the cut cable from the cutting device, remove the inner core, and complete the sampling of the cable sheath insulation.

Those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (2)

1. a kind of cable cover(ing) apparatus for cutting insulation layer, it is characterised in that：Including platform base (1), in the platform base (1) Provided with the pressing table (2) for being used to compress cable that can be moved up and down, the level table on platform base (1) top is provided with Some slots that are parallel to each other, the vertical cross-section of the pressing table (2) is in " Λ " shape, and two sides of pressing table (2) are distinguished It is made up of some plates, the plate can be inserted in the slot of the platform base (1) level table respectively；Described pressure Tight platform (2) top is provided with V-groove, and slit is provided with the bottom of the V-groove, and cutter (3) are arranged on the pressing table (2) Top, the blade of the cutter (3) passes through the slit of the pressing table V-groove, and can be moved along the slit by cable protection Set insulating barrier is cut vertically.

2. cable cover(ing) apparatus for cutting insulation layer as claimed in claim 1, it is characterised in that：In the platform base (1) On level table and each bar plate of the pressing table (2) is provided with the elongated slot passed through for screw rod, pressing table (2) by through The screw rod (5) of elongated slot and the nut (4) having locking effect are fixed on compacted position.