CN116718445A - A method for preparing dumbbell samples for cable outer sheath - Google Patents

Abstract

The invention relates to a method for preparing dumbbell samples of cable outer sheaths. In the first step, the stripped cable outer sheath is unfolded; in the second step, the unfolded cable outer sheath is passed through a sharpener to shave off one side of the surface. layer; the third step is to form a dumbbell-shaped incision matching the dumbbell-like shape of the cable outer sheath on the side where the surface layer of the cable outer sheath in the unfolded state has been removed, and the depth of the dumbbell-shaped incision is The cable outer sheath is thicker than a dumbbell; the fourth step is to make the cable outer sheath in the expanded state with a dumbbell-shaped incision pass through a sharpener to cut off the middle layer of the sheath, and place the middle layer of the sheath on the dumbbell. Remove the part surrounded by the shaped incision, and the removed part will be the dumbbell shape of the cable outer sheath. The invention provides a cable outer sheath dumbbell sample making machine that first forms a cable outer sheath dumbbell sample and then forms a cable outer sheath dumbbell sample, and provides a new method for making a cable outer sheath dumbbell sample. .

Description

A method for preparing dumbbell samples for cable outer sheath

Technical field

The invention relates to the technical field of electric power engineering material detection, and in particular to a method for preparing dumbbell samples for cable outer sheaths.

Background technique

With the construction of cities and the transformation of power grids, more and more overhead lines are gradually replaced by power cables, which also brings a large number of cable laying, construction, and fault repairs. The stable operation of cables is closely related to the quality of the cable itself. In order to ensure the quality of the cables laid, the cables must pass the testing center before they can be laid. During cable testing, it is necessary to make a dumbbell-shaped test sample as shown in Figure 2 (hereinafter referred to as the cable outer sheath dumbbell sample 60). The production process of the cable outer sheath dumbbell sample is: peel off a section of the cable outer sheath from the cable. Then, the inner and outer surfaces of the cable outer sheath are removed to leave an approximately 2 mm thick middle layer of the outer sheath, and then a dumbbell-like shape of the cable outer sheath is die-cut using a dumbbell-shaped mold. The existing method of removing the inner and outer layers of the cable outer sheath to form the middle layer of the outer sheath is formed by manual cutting multiple times, which has the disadvantages of low efficiency, laboriousness, poor precision and poor surface smoothness. With the construction of cities and the transformation of power grids, more and more overhead lines are gradually replaced by power cables, which also brings a large number of cable laying, construction, and fault repairs. The stable running sheath of the cable is closely related to the quality of the cable itself. In order to ensure the quality of the cables laid, the cables must pass the testing center before they can be laid. During cable testing, it is necessary to make a dumbbell-shaped test sample as shown in Figure 2 (hereinafter referred to as the cable outer sheath dumbbell sample 60). The production process of the cable outer sheath dumbbell sample is: peel off a section of the cable outer sheath from the cable. Then, the inner and outer surfaces of the cable outer sheath are removed to leave an approximately 2 mm thick middle layer of the outer sheath, and then a dumbbell-like shape of the cable outer sheath is die-cut using a dumbbell-shaped mold. The existing method of removing the inner and outer layers of the cable outer sheath to form the middle layer of the outer sheath is formed by manual cutting multiple times, which has the disadvantages of low efficiency, laboriousness, poor precision and poor surface smoothness. The existing dumbbell-shaped cable outer sheath is formed by first forming the middle layer of the sheath and then cutting out the dumbbell-shaped cable outer sheath.

Contents of the invention

The invention provides a cable outer sheath dumbbell sample making machine that first forms a cable outer sheath dumbbell sample and then forms a cable outer sheath dumbbell sample, and provides a new method for making a cable outer sheath dumbbell sample. .

The above technical problems are solved through the following technical solutions: a cable outer sheath dumbbell sample preparation method, which is characterized in that, in the first step, the stripped cable outer sheath is unfolded; in the second step, the cable in the unfolded state is The outer sheath is shaved off one side of the surface layer by a sharpener; in the third step, the surface layer of the cable outer sheath in the unfolded state is shaped like a dumbbell on one side of the outer sheath. The dumbbell-shaped incision matches the shape, and the depth of the dumbbell-shaped incision is more than the dumbbell-shaped thickness of the cable outer sheath; the fourth step is to use a sharpener to cut off the cable outer sheath in the expanded state with the dumbbell-shaped incision. Remove the middle layer of the sheath and remove the part surrounded by the dumbbell-shaped incision. The removed part is the dumbbell shape of the cable outer sheath.

As a preference, it is specifically realized by a cable outer sheath dumbbell sample making machine. The cable outer sheath dumbbell sample making machine includes a frame, and the rack is transversely provided with a loading position, a cutter installation position and a die-cutting position. , a cutter is installed on the cutter installation position, a dumbbell-like forming mold is installed on the die-cutting position, and the frame is also provided with a cable outer sheath fixing mechanism, a lateral moving mechanism and a vertical moving mechanism; The specific process of making a dumbbell-like cable outer sheath is: spread the stripped cable outer sheath and fix it on the cable outer sheath fixing mechanism. The length direction of the cable outer sheath extends laterally and is driven by a vertical moving mechanism. The cutter drops to the required height, and the transverse movement mechanism drives the cable outer sheath fixing mechanism to move toward the die-cutting position. During the movement, the cable outer sheath passes through the cutter and one side of the surface is removed by the cutter. The cable outer sheath fixing mechanism After reaching the die-cutting position, the vertical moving mechanism drives the dumbbell-shaped forming mold to descend and cut a dumbbell-shaped incision on the outer sheath of the cable. The depth of the dumbbell-shaped incision is above the thickness of the middle layer of the outer sheath. The vertical mechanism drives the dumbbell-shaped forming mold. The mold and the cutter rise to avoid it, the lateral movement mechanism drives the cable outer sheath fixing mechanism to conductive loading position, and the vertical movement mechanism drives the cutter down so that the distance makes the cutting edge of the cutter lower than the cable fixed on the cable outer sheath fixation mechanism. The distance between the upper surface of the outer sheath is the thickness of the middle layer of the outer sheath. The lateral movement mechanism again drives the cable outer sheath fixing mechanism to move toward the die-cutting position. During the movement, the cable outer sheath passes through the cutter and is removed by the cutter. For the middle layer of the outer sheath, remove the part of the middle layer of the sheath that is surrounded by the dumbbell-shaped incision. The removed part is the dumbbell shape of the outer sheath of the cable.

Preferably, the cutting tool includes a cutting tool seat and a cutting blade detachably connected to the cutting tool seat. The cutting tool seat is connected with a vertical moving mechanism, and the direction lines of each part of the cutting edge of the cutting blade are located on a horizontal plane. There is a reversing guide slope between the upper end of the cutting tool seat and the cutting blade. The reversing guide slope is used to guide the cutting layer cut off from the cable outer sheath to be cut along the cutting tool. The direction of the set moves. It can prevent the cut part of the cable outer sheath from reaching the die-cutting position and interfering with the dumbbell-shaped molding mold to form a dumbbell-shaped notch on the cable outer sheath, thereby avoiding affecting the accuracy of the produced dumbbell-shaped cable outer sheath.

Preferably, the blade mounting chute is provided with a blade mounting chute, one end of the blade mounting chute is low toward the cutting edge of the sharpening blade and the other end is high, the width of the blade mounting chute is equal at all places, and the blade mounting chute is It is installed in the blade mounting chute, and the surfaces at both ends of the cutting blade in the thickness direction are flat surfaces. The side of the cutting blade beyond the blade mounting chute away from the reversing guide slope is provided with a blade to form a slope, and the blade forms a slope with the cutting blade. The cutting edge of the cutting blade is formed between the side surfaces facing the reversing guide slope. It not only makes the installation and fixing convenient and reliable, but also allows the cut-off part of the cable outer sheath to be more reliably separated from the cable outer sheath to reach the reversing guide slope, thereby passing through the cut-off part of the cable outer sheath. Commutation reliability.

Preferably, the cutting blade seat is detachably connected to a cutting blade fixed block that contacts the upper surface in the thickness direction of the cutting blade and presses the cutting blade.

Preferably, the cutting tool seat is provided with a cutting part bolt through hole extending along the cutting direction of the cutting tool, and the cutting tool fixed block is provided with a cutting part threaded hole, and the cutting part bolt passes through the cutting tool. The cutting blade bolt through hole is threadedly connected in the cutting blade threaded hole to drive the cutting blade fixing block to move in a direction away from the cutting edge of the cutting blade, so that the cutting blade fixing block is pressed against the cutting blade. It is convenient and reliable when fixing the sharpening blade. The lateral movement of the bolt can generate vertical pressing force.

Preferably, the reversing guide slope is provided with a cutting blade recess, and the cutting blade fixing block is located in the cutting blade recess. The connection is reliable.

Preferably, there is a smooth transition between the end face of the cutting blade pressing block away from the cutting blade bolt and the reversing guide slope, and the end face of the cutting blade pressing block away from the cutting blade bolt is the same as the surface of the cutting insert. There is a smooth transition between them. When practical, the reliability of cutting off the part for moving and reversing is good.

Preferably, the reversing guide slope is recessed in the cutting tool seat. It can prevent the cut part from moving forward and backward, thus improving the reliability of reversing.

Preferably, the cable outer sheath fixing mechanism includes a cable outer sheath support bottom plate and a transverse pressing bar that is elevatingly connected to the cable outer sheath support bottom plate through a lifting mechanism, and the frame is provided with transverse slide rails. The cable outer sheath support bottom plate is slidably connected to the transverse slide rail, the cutter is aligned with the transverse channel formed between the two pressing bars, and transverse support protrusions are provided in the transverse channel. The upper surface of the supporting convex strip is an arc surface, and the center line of the arc surface extends transversely. When in use, the cable outer sheath is unfolded and placed on the cable outer sheath support base, and then pressed on both sides of the cable outer sheath through transverse pressing bars to fix it; the cable outer sheath is located on the cable outer sheath support base, and the cable The length direction of the outer sheath is transverse. The outer surface of the sliding sleeve is placed on the transverse support ridges downward, which can better package the cable outer sheath and stick it to the cable outer sheath support base plate, which can improve the accuracy of the dumbbell-like shape of the cable outer sheath. .

Preferably, the lower surface of the pressing strip is provided with a plurality of pressing teeth distributed transversely, and the pressing teeth extend longitudinally. It can improve the reliability when pressing and fixing, and prevent the cable outer sheath from loosening due to force when it is reset.

Preferably, it also includes a plurality of pressing rollers aligned with the channel and distributed laterally, which are connected to the vertical moving mechanism. The pressing rollers are used to extend in when the cable outer sheath support bottom plate is located directly below the pressing rollers. Press the cable outer sheath located on the cable outer sheath supporting bottom plate in the transverse channel. When the cable outer sheath fixing mechanism is driven to move toward the peeler, the cable outer sheath is pressed by the pressing roller, thereby enabling more reliable and accurate peeling.

Preferably, the cutting tool includes a cutting tool seat and a cutting blade detachably connected to the cutting tool seat. There is an operating space between the pressing roller closest to the cutting tool and the cutting tool for assembly and disassembly of the cutting blade. . It is convenient to install and remove the sharpening blade.

Preferably, the vertical moving mechanism is connected to a pressure wheel located in the working space through a vertically telescopic suspension cylinder. The pressure wheel is used for cutting the outer surface of the cable located on the cable outer sheath support base plate. When sheathing, press it on the outer sheath of the cable. It can not only ensure the reliability when sharpening (if you don't press it, it will easily bulge upward, resulting in poor uniformity and reliability of the rear end of the cut part).

Preferably, the distance between the pressing point of the pressing wheel on the cable sheath and the cutting edge of the cutting blade is 3 mm or less.

Preferably, the lifting mechanism includes two transverse drive bars with drive chutes located below the cable outer sheath support base plate, a transverse screw rod rotatably connected to the cable outer sheath support base plate, and a transverse screw rod threadedly connected to the transverse screw rod. The threaded sleeve of the fixed mechanism part, the two longitudinally extending driving heads connected to the threaded sleeve of the fixed mechanism part and passing through the driving chute in one-to-one correspondence, and the transverse screw drive motor that drives the transverse screw to rotate, so The transverse screw drive motor and the threaded sleeve of the fixing mechanism are fixed together with the cable outer sheath support base plate. The two ends of the two transverse drive bars are connected to the two transverse drive bars one by one through a vertical connecting rod. The two ends of the pressing bar are connected together, and the vertical connecting rod is passed through the cable outer sheath support base plate. The rotation of the screw rod in the horizontal direction drives the horizontal lifting and lowering, and the structure is compact. The lifting mechanism is all located under the support bottom plate of the cable outer sheath, which can avoid interference with the cutting tool.

Preferably, two sliding seats supported on the transverse slide rails are provided at both transverse ends of the cable outer sheath support bottom plate, the transverse screw rod passes through the sliding seats, and the two transverse driving bars Located on both longitudinal sides of the transverse screw rod. Good stability.

Preferably, the pressing bar is provided with a long through hole extending vertically through the longitudinal direction of the pressing bar, the vertical connecting rod is passed through the long through hole, and the vertical connecting rod is connected to a longitudinally extending through hole. The pressing block at the upper end of the long through hole and the lifting block at the lower end of the longitudinal through hole. The cable outer sheath support bottom plate is provided with two support slopes distributed longitudinally on both sides of the transverse channel. The pressing strips are located directly above the two supporting slopes in one-to-one correspondence. When the cable outer sheath is supported on the cable outer sheath supporting base plate, both sides of the cable outer sheath are pressed by the two pressing strips. on the two supporting slopes. When the horizontal pressing bar is lowered to clamp the cable outer sheath, it can drive the cable outer sheath to be longitudinally tensioned, thus ensuring the reliability of the cable outer sheath being tightly attached to the cable outer sheath support base plate.

Preferably, the transverse pressing strip is provided with a pressing slope that cooperates with the supporting slope. Good reliability when tensioning the outer sheath of the cable.

Preferably, the lateral movement mechanism includes an active synchronous pulley that is rotatably connected to the frame, a lateral movement motor that drives the active synchronous pulley to rotate, a driven synchronous pulley that is rotatably connected to the frame, and both ends are fixed with the outer sheath of the cable. The synchronous belt, the driving synchronous pulley and the driven synchronous pulley are laterally distributed at both ends of the frame. The synchronous belt bypasses the driving pulley and the driven pulley to realize the driven driving through the rotation of the driving pulley. The timing pulley rotates.

Preferably, the vertical moving mechanism includes a connecting frame, a vertical guide rod passing through the connecting frame, a threaded sleeve of the moving mechanism part connected to the connecting frame, and a vertical screw rod threadedly connected to the threaded sleeve of the moving mechanism part. and a vertical screw drive motor that drives the vertical screw to rotate, the vertical guide rod is fixed with the frame, the vertical screw is rotationally connected with the frame, the cutter and the dumbbell-like forming mold are fixed on the connecting frame.

Preferably, the frame is provided with a shell, and the dumbbell-like forming mold, the cable outer sheath fixing mechanism, the transverse movement mechanism, the horizontal movement mechanism, the cutter and the vertical movement mechanism are all located in the housing, and the There is a loading and unloading opening on the front side, and a door panel that closes the loading and unloading opening is connected to the shell. The appearance is neat and tidy and the safety is good.

Preferably, the door panel is connected to the housing through a reversing structure that enables the door panel to move from being closed at the upper and lower material openings to being positioned above the top wall of the housing for opening the door. It can reduce the plane space required when opening and closing the door. When the height of the door is lower than the height of a person, the person does not need to retreat to avoid the door during the process of opening and closing the door, which improves the convenience when opening the door.

Preferably, the reversing structure includes two transmission frames connected to both transverse ends of the door panel. When the door panel is closed, the transmission frame is located inside the casing. The transmission frame includes one end that is hinged with the frame through a first horizontal axis pin. The first swing bar, the sliding block connected to the other end of the first swing bar, the door panel slide rail slidingly connected with the sliding block and the second swing bar with one end hinged to the inner surface of the door panel through the second horizontal axis pin , the other end of the second swing rod is hinged to the vertical middle part of the frame through the third horizontal axis pin, and the door panel slide rail is connected to the inner surface of the door panel. When the door panel is closed, the door panel slide rail moves in the up and down direction. Extend, the sliding block can swing to the top of the casing with the first transverse pin axis as the axis; when the door panel is closed, the sliding block is located at the upper end of the door panel, and the connection point between the second swing rod and the door panel is located at the lower end of the door panel; the door panel is opened At this time, the door panel is blocked above the casing, and the connection points between the sliding block and the second swing bar and the door panel are located at the front end of the door panel. When in use, the door panel can be closed by pulling the door panel downward.

Preferably, the material inlet and outlet are provided with a limiting step, and when the door panel is closed, the inner surface of the door panel abuts on the limiting step. Reliability through closing the door.

Preferably, the upper end of the limiting step is provided with an escape section inclined backward. It can further reduce the horizontal space required when opening and closing the door.

Preferably, a handle is provided on the outer surface of the door panel. When in use, manually open and close the door through the handle.

Preferably, when the door panel is closed, the handle is located at the lower end of the door panel.

Preferably, a transmission frame is provided with a door opening and closing cylinder, one end of the door opening and closing cylinder is hinged with the second swing rod through a fourth horizontal axis pin, and the other end is hinged with the frame through a fifth horizontal axis pin. It can automatically open and close the door through the door opening and closing cylinder.

Preferably, when the door panel is opened, the door opening and closing cylinder is in an extended state.

The invention has the following advantages: the removed outer sheath of the cable can be quickly made into a dumbbell-like shape of the outer sheath of the cable; after the outer sheath of the cable is removed, it is flattened and sampled, and a cable with a current width can be produced when the diameter of the outer sheath is small. The outer sheath is dumbbell-like; the pressing force when fixing the outer sheath of the cable can generate a force that tightens the outer sheath of the cable, allowing the outer sheath of the cable to maintain a flat state more reliably, thus making the cut samples high in dimensional accuracy. (If the outer sheath of the cable rises and falls in the thickness direction during cutting, the accuracy of the final size of the rear end of the sample taken out will be poor).

Description of the drawings

Figure 1 is a schematic diagram of the cable outer sheath dumbbell sample making machine;

Figure 2 is a schematic diagram of the dumbbell-like outer sheath of the cable;

Figure 3 is a partial enlarged schematic diagram of position A in Figure 1;

Figure 4 is a schematic diagram of the cable outer sheath dumbbell sample making machine after the outer casing is removed;

Figure 5 is a schematic front view of the cable outer sheath dumbbell sample making machine with the outer casing removed;

Figure 6 is a schematic diagram of the cable outer sheath fixing mechanism from a perspective;

Figure 7 is a schematic diagram of the cable outer sheath fixing mechanism from another perspective;

Figure 8 is a schematic diagram of a sharpener;

Figure 9 is a schematic diagram of the sharpening tool seat;

Figure 10 is a schematic diagram of a sharpening blade;

Figure 11 is a schematic diagram of the cable outer sheath fixing mechanism in the second embodiment.

In the picture: frame 1, shell 2, loading and unloading port 3, door panel 4, limit step 5, avoidance section 6, handle 7, transmission frame 8, first horizontal axis pin 9, first swing bar 10, sliding block 11 , door panel slide rail 12, second horizontal axis pin 13, second swing rod 14, third horizontal axis pin 15, door opening and closing cylinder 69, fourth horizontal axis pin 16, fifth horizontal axis pin 17, cutter 18, Dumbbell-like forming mold 19, cable outer sheath fixing mechanism 20, lateral moving mechanism 21, vertical moving mechanism 22, connecting frame 23, vertical guide rod 24, moving mechanism part thread sleeve 25, vertical screw rod 26, vertical wire Rod drive motor 27, sharpening blade seat 28, sharpening blade 29, reversing guide slope 66, blade mounting chute 67, one end of the blade mounting chute facing the edge of the sharpening blade 30, the blade forming a bevel 31, the edge of the sharpening blade Port 32, cutter fixing block 33, cutter part bolt through hole 34, cutter part threaded hole 35, cutter part pit 36, cable outer sheath support bottom plate 37, lateral pressing bar 38, lateral slide rail 39, sliding Seat 40, transverse channel 41, transverse support protrusion 42, upper surface of transverse support protrusion 43, pressing teeth 44, pressing roller 45, working space 46, suspension cylinder 47, pressure wheel 48, driving chute 49, transverse driving strip 50. Transverse screw rod 51, threaded sleeve of fixed mechanism part 52, drive head 53, transverse screw rod drive motor 54, vertical connecting rod 55, active synchronous pulley 56, transverse movement motor 57, driven synchronous pulley 58, synchronous belt 59. Dumbbell shape of cable outer sheath 60, long through hole 61, pressing block 62, lifting block 68, support slope 63, cable outer sheath 64, pressing slope 65.

Detailed ways

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

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Referring to Figures 1 to 10, a method for preparing a cable outer sheath dumbbell sample is shown. In the first step, the stripped cable outer sheath is unfolded; in the second step, the unfolded cable outer sheath is cut with a sharpener. Remove one side of the surface layer; the third step is to form a dumbbell-shaped incision matching the dumbbell-like shape of the cable outer sheath on the side where the surface layer of the cable outer sheath in the expanded state is removed. The depth of the cable outer sheath is more than the dumbbell-like thickness of the cable outer sheath; in the fourth step, the cable outer sheath with the dumbbell-shaped incision in the unfolded state is passed through a sharpener to cut off the middle layer of the sheath, and the middle layer of the sheath is cut. Remove the portion of the layer surrounded by the dumbbell-shaped incision, and the removed portion will be the dumbbell-shaped outer sheath of the cable. Specifically, it is realized by a cable outer sheath dumbbell sample making machine, which includes a frame 1 . The rack is provided with a shell 2. The front side of the shell is provided with a loading and unloading opening 3, and the shell is connected with a door panel 4 that closes the loading and unloading opening. The material inlet and outlet are provided with a limit step 5. When the door panel is closed, the inner surface of the door panel abuts against the limit step. The upper end of the limiting step is provided with an escape section 6 inclined backward. The door panel is connected to the housing through a reversing structure that enables the door panel to be transferred from being closed at the loading and unloading opening to being located above the top wall of the housing for opening the door. A handle 7 is provided on the outer surface of the door panel. When the door panel is closed, the handle is located at the lower end of the door panel. The reversing structure includes two transmission frames 8 connected at both transverse ends of the door panel. When the door panel is closed, the transmission frame is located inside the casing. The transmission frame includes a first swing bar 10 with one end hinged to the frame through a first horizontal axis pin 9 , the sliding block 11 connected to the other end of the first swing bar, the door panel slide rail 12 slidingly connected with the sliding block, and the second swing bar 14 with one end hinged to the inner surface of the door panel through the second horizontal axis pin 13 , the other end of the second swing rod is hinged to the vertical middle part of the frame through the third horizontal axis pin 15, and the door panel slide rail is connected to the inner surface of the door panel. When the door panel is closed, the door panel slide rail extends in the up and down direction and slides The block can swing above the casing with the first transverse pin axis as the axis; when the door panel is closed, the sliding block is located at the upper end of the door panel, and the connection point between the second swing rod and the door panel is located at the lower end of the door panel; when the door panel is opened, the door panel Covered above the casing, the connection points between the sliding block and the second swing bar and the door panel are located at the front end of the door panel. The door panel slide rail can only slide on the sliding block and cannot fall off (that is, the door panel slide rail and the sliding block remain connected during the sliding process). The transfer frame at the left end is provided with a door opening and closing cylinder 69. One end of the door opening and closing cylinder is hinged to the second swing rod through the fourth horizontal axis pin 16, and the other end is hinged to the frame through the fifth horizontal axis pin 17. Together. When the door panel is opened, the door opening and closing cylinder is in an extended state.

The shell is equipped with a loading position, a cutting blade installation position and a die-cutting position laterally. A cutter 18 is installed on the cutter installation position, and a dumbbell-like forming mold 19 is installed on the die-cutting position. The frame is also provided with a cable outer sheath fixing mechanism 20, a lateral movement mechanism 21 and a vertical movement mechanism 22. The dumbbell-like forming mold, the cable outer sheath fixing mechanism, the lateral moving mechanism, the cutter and the vertical moving mechanism are all located within the housing. The lateral movement mechanism is used to drive the cable outer sheath fixing mechanism to reciprocate between the loading position and the die-cutting position. When the cable outer sheath fixing mechanism passes through the cutter installation position, the cutter can fix the cable outer sheath. The surface of the cable outer sheath is removed on the mechanism; the vertical moving mechanism is used to drive the cutter and the dumbbell-like forming mold to lift and lower, and the dumbbell-like forming mold is used to move the mechanism vertically when the cable outer sheath fixing mechanism is in the die-cutting position. Driven by, the cable sheath is closed toward the dumbbell-like forming mold and the dumbbell-like shape of the cable outer sheath that is still connected to the cable outer sheath is die-cut out of the cable sheath fixed on the cable outer sheath fixing mechanism (that is, the dumbbell-like shape of the cable outer sheath is cut out to form the cable) Dumbbell-shaped cutout with dumbbell-like outline of the outer sheath).

The vertical moving mechanism includes a connecting frame 23, four vertical guide rods 24 passing through the connecting frame, a threaded sleeve 25 of the moving mechanism part connected to the connecting frame, and a vertical screw rod threadedly connected to the threaded sleeve of the moving mechanism part. 26 and a vertical screw drive motor 27 that drives the vertical screw to rotate. The vertical screw drive motor drives the vertical screw to rotate through a pulley and a belt. The upper and lower ends of the vertical guide rod are fixed with the frame, and the vertical screw rod is rotationally connected with the frame. There are two dumbbell-like forming molds, and the two dumbbell-like forming molds are distributed laterally and fixed on the connecting frame. superior.

The sharpener includes a sharpener seat 28 and a sharpener blade 29 that is detachably connected to the sharpener seat. The sharpener seat is connected to a connecting frame. The direction lines of each part of the cutting edge of the sharpener blade are located on a horizontal plane. The cutting edge has a straight structure. The cutting edge of the cutting blade faces right, and a reversing guide slope 66 is provided between the upper end of the cutting blade seat and the cutting blade. The reversing guide slope is used to guide the reversing of the chipped layer cut off from the cable outer sheath. Move in the direction in which the cutter cuts the outer sheath of the cable (that is, change the direction to be consistent with the direction of the cutting edge). The blade mounting chute 67 is provided with a blade mounting chute 67. One end 30 of the blade mounting chute is low toward the cutting edge of the sharpening blade and the other end is high. The width of the blade mounting chute is equal at all places. The cutting blade is inserted through the blade mounting chute. Inside, the surfaces at both ends of the cutting blade in the thickness direction (i.e., the upper and lower side surfaces) are flat surfaces. The side of the cutting blade that exceeds the blade mounting chute and is away from the reversing guide slope is provided with a cutting edge forming a bevel 31. The cutting blade forms a beveled surface with the cutting blade. The cutting edge 32 of the cutting blade is formed between the side surfaces facing the reversing guide slope. The cutting blade holder is detachably connected with a cutting blade fixing block 33 that contacts the upper surface in the thickness direction of the cutting blade and presses the cutting blade. The cutting tool seat is provided with a cutting part bolt through hole 34 extending along the cutting direction of the cutting tool. The cutting tool fixed block is provided with a cutting part threaded hole 35. The cutting part bolt is threaded after passing through the cutting part bolt through hole. The cutting blade fixed block is connected in the threaded hole of the cutting blade portion to drive the cutting blade fixing block to move in a direction away from the cutting edge of the cutting blade, so that the cutting blade fixing block is pressed against the cutting blade. The reversing guide slope is provided with a cutter part pit 36, and the cutter fixed block is located in the cutter part pit. There is a smooth transition between the end face of the cutting blade pressing block away from the cutting blade bolt and the reversing guide slope, and there is a smooth transition between the end face of the cutting blade pressing block away from the cutting blade bolt and the surface of the cutting blade. The reversing guide slope is recessed in the sharpener holder.

The cable outer sheath fixing mechanism includes a cable outer sheath support base 37 and two transverse pressing bars 38 connected to the cable outer sheath support base in a lifting and lowering manner through a lifting mechanism. The frame is provided with transverse slide rails 39, and the cable outer sheath is provided with a horizontal slide rail 39. A sliding seat 40 is provided at each of the transverse (i.e., left and right) ends of the sheath supporting bottom plate, and the sliding seats are slidably connected to the transverse slide rails.

The cutter is aligned with the transverse channel 41 formed between the two pressing bars. A transverse support protrusion 42 is provided in the transverse channel. The upper surface 43 of the transverse support protrusion is an arc surface, and the center line of the arc surface extends transversely. The lower surface of the pressing bar is provided with a plurality of pressing teeth 44 distributed in the transverse direction, and the pressing teeth 44 extend in the longitudinal direction. It also includes a number of pressing rollers 45 connected to the connecting frame and aligned with the transverse channel and distributed laterally. The pressing rollers are used to extend into the transverse channel to press the outside of the cable when the cable outer sheath support bottom plate is located directly below the pressing roller. The jacket supports the cable outer jacket on the base plate. A working space 46 for assembly and disassembly of the cutting blade is provided between the pressing roller closest to the cutting blade and the cutting blade. The vertical moving mechanism is connected to a pressure wheel 48 located in the working space through a vertically telescopic suspension cylinder 47. The pressure wheel is used to press the outside of the cable when cutting the cable outer sheath located on the cable outer sheath support base plate. On the sheath. The distance between the pressing point of the pressing wheel on the cable sheath and the cutting edge of the cutting blade is less than 3 mm. The lifting mechanism includes two transverse drive bars 50 with drive chute 49 located below the cable outer sheath support base plate, a transverse screw rod 51 rotatably connected to the cable outer sheath support base plate, and a fixed screw threadedly connected to the transverse screw rod. The connecting mechanism part threaded sleeve 52, the two longitudinally extending driving heads 53 connected to the fixed mechanism part threaded sleeve and passing through the driving chute on the two transverse driving bars in one-to-one correspondence, and the driving head 53 that drives the transverse screw rod to rotate. Transverse screw drive motor 54. The transverse screw drive motor drives the transverse screw through a belt and a pulley. The transverse screw drive motor and the threaded sleeve of the fixing mechanism are fixed together with the cable outer sheath support base plate. The two ends of the two transverse driving bars are connected to the two ends of the two transverse pressing bars in a one-to-one correspondence through a vertical connecting rod 55, which is passed through the cable outer sheath support base plate. . The transverse screw rod passes through the sliding seat, and the two transverse driving bars are located on both longitudinal sides of the transverse screw rod.

The lateral movement mechanism includes an active synchronous pulley 56 that is rotatably connected to the frame, a lateral movement motor 57 that drives the active synchronous pulley to rotate, a driven synchronous pulley 58 that is rotatably connected to the frame, and both ends are fixed with cable outer sheath fixing mechanisms. Together with the synchronous belt 59, the active synchronous pulley and the driven synchronous pulley are laterally distributed at both ends of the frame. The synchronous belt bypasses the driving pulley and the driven pulley to drive the driven synchronous pulley to rotate through the rotation of the driving pulley. .

The process of making a dumbbell-like cable outer sheath by the present invention is: spread out the stripped cable outer sheath and fix it on the cable outer sheath fixing mechanism, drive the cutter to lower to the required height through the vertical moving mechanism, and horizontally The moving mechanism drives the cable outer sheath fixing mechanism to move toward the die-cutting position. During the movement, the cable outer sheath passes through a cutter and one side of the surface is removed by the cutter. The cable outer sheath fixing mechanism moves vertically after reaching the die-cutting position. The dumbbell-shaped forming mold is driven down to cut a dumbbell-shaped notch on the outer sheath of the cable. The depth of the dumbbell-shaped notch is above the thickness of the middle layer of the outer sheath. The vertical mechanism drives the dumbbell-like forming mold and the cutter to rise to avoid it. The horizontal mechanism The moving mechanism drives the cable outer sheath fixing mechanism to the loading position, and the vertical moving mechanism drives the cutter down so that the cutting edge of the cutter is lower than the upper surface of the cable outer sheath fixed on the cable outer sheath fixing mechanism. The thickness of the middle layer of the sheath, the lateral movement mechanism again drives the fixing mechanism of the cable outer sheath to move toward the die-cutting position. During the movement, the outer sheath of the cable is cut off by the cutter and the middle layer of the lower outer sheath is removed, and the outer sheath is removed. The two outer cable sheaths on the middle layer of the sheath are dumbbell-like 60.

The process of fixing the cable outer sheath to the cable outer sheath fixing mechanism is as follows: After the cable outer sheath is unfolded, it is placed on the cable outer sheath support bottom plate and closely covers the support ridges. The length direction of the cable outer sheath Extending in the transverse direction, the inner surface of the cable outer sheath is oriented (that is, toward the supporting ridge), and then pressed on both sides of the cable outer sheath by the transverse pressing bars, and fixed by driving the transverse pressing bars downward through the lifting mechanism. The lifting process of the lifting mechanism is: the transverse screw drives the motor to drive the transverse screw to rotate, the transverse screw drives the transverse thread sleeve to move laterally, when the transverse thread sleeve moves laterally, it drives the drive head to move synchronously, and when the drive head moves laterally, it cooperates with the drive tilt The groove drives the horizontal driving bar to rise and fall. When the horizontal driving bar rises and falls, the vertical connecting rod drives the horizontal pressing bar to rise and fall.

The difference between Embodiment 2 and Embodiment 1 is:

Referring to Figure 11, the pressing bar is provided with a long through hole 61 extending vertically through the pressing bar. The upper end of the vertical connecting rod is passed through the long through hole, and the vertical connecting rod is connected to a long vertical bar. The pressing block 62 at the upper end of the through hole and the lifting block 68 at the lower end of the longitudinal through hole (when rising, the horizontal pressing bar is lifted by the lifting block, and when descending, the horizontal pressing bar is pressed down by the pressing block). The cable outer sheath supports the base plate. There are two support slopes 63 distributed longitudinally on both sides of the transverse channel. The two transverse pressing bars are located directly above the two support slopes in one-to-one correspondence. The cable outer sheath 64 is supported on the cable outer sheath support bottom plate. At this time, the two edges of the cable outer sheath are pressed against the two supporting slopes by two pressing bars. The transverse pressing bar is provided with a pressing slope 65 that cooperates with the supporting slope.

When the horizontal pressing bar of this technical solution is pressed against the outer sheath, it will generate a force that pulls the outer sheath longitudinally, making the cable outer sheath more reliably and fully tensioned, thereby passing the cable outer sheath with dumbbell-like accuracy.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of other identical elements in the process, method, article or equipment including the stated element; the direction and orientation are only relative The orientation of the relationship.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A dumbbell sample preparation method of an outer cable sheath is characterized in that firstly, the stripped outer cable sheath is unfolded; step two, the cable outer sheath in the unfolded state is cut off from one surface layer by a cutter; thirdly, forming a dumbbell-shaped incision matched with the dumbbell-shaped shape of the cable outer sheath on the side, from which the surface layer of the surface layer is cut, of the cable outer sheath in an unfolding state, wherein the surface layer is cut off, and the depth of the dumbbell-shaped incision is more than the thickness of the dumbbell-shaped shape of the cable outer sheath; fourthly, the cable outer sheath with the dumbbell-shaped notch in the unfolded state is cut off by a knife to remove the middle sheath layer, and the part, surrounded by the dumbbell-shaped notch, of the middle sheath layer is removed, and the removed part is the dumbbell-shaped cable outer sheath.

2. The method for preparing the dumbbell sample with the cable outer sheath, which is disclosed in claim 1, is realized by a sample preparation machine for preparing the dumbbell sample with the cable outer sheath, wherein the sample preparation machine for preparing the dumbbell sample with the cable outer sheath comprises a rack, a loading position, a cutter mounting position and a die cutting position are transversely and sequentially arranged on the rack, a cutter is arranged on the cutter mounting position, a dumbbell sample forming die is arranged on the die cutting position, and a cable outer sheath fixing mechanism, a transverse moving mechanism and a vertical moving mechanism are also arranged on the rack; the specific process for manufacturing the dumbbell-shaped outer sheath of the cable comprises the following steps: the stripped cable outer sheath is unfolded and fixed on a cable outer sheath fixing mechanism, the length direction of the cable outer sheath transversely extends, a cutter is driven by a vertical moving mechanism to descend to a required height, the cable outer sheath fixing mechanism is driven by the horizontal moving mechanism to move towards a die cutting position, one side surface layer of the cable outer sheath is cut by the cutter in the moving process, after the cable outer sheath fixing mechanism reaches the die cutting position, a dumbbell-shaped notch is cut on the cable outer sheath by the vertical moving mechanism after the cable outer sheath fixing mechanism reaches the die cutting position, the depth of the dumbbell-shaped notch is larger than the thickness of an outer sheath intermediate layer, the dumbbell-shaped forming die and the cutter are driven by the vertical moving mechanism to ascend for avoiding, the cable outer sheath fixing mechanism is driven by the horizontal moving mechanism to conduct feeding, the cutter is driven by the vertical moving mechanism to descend so that the distance of the cutter edge is lower than the thickness of the cable outer sheath upper surface fixed on the cable outer sheath fixing mechanism, the horizontal moving mechanism drives the cable outer sheath fixing mechanism to move towards the die cutting position again, the cable outer sheath is cut off the intermediate layer by the cutter in the moving process, and the dumbbell-shaped part of the intermediate layer is surrounded by the dumbbell-shaped notch, and the dumbbell-shaped part of the dumbbell-shaped sheath is taken out.

3. The dumbbell-like sample preparation method of the cable sheath according to claim 2, wherein the cutter comprises a cutter seat and a cutter blade detachably connected to the cutter seat, the cutter seat is connected with the vertical moving mechanism, direction lines of all parts of the cutting edge of the cutter blade are located on a horizontal plane, a reversing guide slope is arranged between the upper end of the cutter seat and the cutter blade, and the reversing guide slope is used for guiding a cutting layer cut down from the cable sheath to be reversed to move along the direction of cutting the cable sheath.

4. The dumbbell-like sample preparation method of the cable sheath according to claim 2, wherein the cable sheath fixing mechanism comprises a cable sheath supporting bottom plate and two transverse pressing strips which are connected to the cable sheath supporting bottom plate in a lifting manner through a lifting mechanism, a transverse sliding rail is arranged on the rack, the cable sheath supporting bottom plate is connected to the transverse sliding rail in a sliding manner, the cutter is aligned with a transverse channel formed between the two pressing strips, transverse supporting raised strips are arranged in the transverse channel, the upper surface of each transverse supporting raised strip is a cambered surface, and the central line of each cambered surface extends transversely.

5. The method for preparing a dumbbell-like sample of an outer sheath of a cable according to claim 4, wherein a plurality of pressing teeth distributed in a transverse direction are provided on a lower surface of the pressing bar, and the pressing teeth extend in a longitudinal direction.

6. The method of claim 4, further comprising a plurality of pressing rollers coupled to the vertical movement mechanism and aligned with the transverse channel and arranged in a transverse direction, the pressing rollers being configured to extend into the transverse channel to press the cable jacket on the cable jacket support base when the cable jacket support base is directly below the pressing rollers.

7. The dumbbell-like sample preparation method of the cable sheath according to claim 6, wherein the cutter comprises a cutter seat and a cutter blade detachably connected to the cutter seat, an operation space for assembling and disassembling the cutter blade is arranged between a pressing roller nearest to the cutter and the cutter blade, the vertical moving mechanism is connected with a pressing wheel located in the operation space through a vertical telescopic hanging cylinder, and the pressing wheel is used for pressing the cable sheath when the cutter blade cuts the cable sheath located on a cable sheath supporting bottom plate.

8. The method for preparing the dumbbell sample of the cable sheath according to claim 4, wherein the lifting mechanism comprises two transverse driving strips provided with driving inclined grooves, a transverse screw rod rotatably connected to the cable sheath supporting bottom plate, a screw sleeve of a fixing mechanism part connected to the transverse screw rod in a threaded manner, two longitudinally extending driving heads penetrating through the driving inclined grooves in a one-to-one correspondence manner and a transverse screw rod driving motor for driving the transverse screw rod to rotate, which are positioned below the cable sheath supporting bottom plate, wherein the two ends of the two transverse driving strips are respectively connected with the two ends of the two transverse pressing strips in a one-to-one correspondence manner through a vertical connecting rod, and the vertical connecting rod penetrates through the cable sheath supporting bottom plate.

9. The dumbbell-like sample preparation method of the cable sheath according to claim 8, wherein a long strip through hole extending longitudinally along the vertical through pressing strip is formed in the pressing strip, the vertical connecting rod penetrates through the long strip through hole, the vertical connecting rod is connected with a pressing block located at the upper end of the longitudinal long strip through hole and a jacking block located at the lower end of the longitudinal through hole, the cable sheath supporting bottom plate is provided with two supporting inclined planes longitudinally distributed on two sides of the transverse channel, the two transverse pressing strips are located right above the two supporting inclined planes in a one-to-one correspondence mode, and when the cable sheath is supported on the cable sheath supporting bottom plate, two side edges of the cable sheath are pressed on the two supporting inclined planes by the two pressing strips.

10. The dumbbell-like sample preparation method of the cable sheath according to claim 2, wherein the frame is provided with a shell, the dumbbell-like forming die, the cable sheath fixing mechanism, the transverse moving mechanism, the skiving knife and the vertical moving mechanism are all located in the shell, an upper discharging opening is formed in the front side of the shell, a door plate for sealing the upper discharging opening is connected to the shell, the door plate is connected with the shell through a reversing structure capable of enabling the door plate to be transferred to the upper part of the top wall of the shell from a state of sealing the upper discharging opening to be opened, the reversing structure comprises two transmission frames connected to the two transverse ends of the door plate, when the door plate is closed, the transmission frames are located in the shell, the transmission frames comprise a first swing rod with one end hinged with the frame through a first transverse shaft pin, a sliding block connected to the other end, a sliding rail with the sliding block and a second transverse shaft with one end hinged with the inner surface of the door plate through a second transverse shaft pin, the other end of the second swing rod is hinged with the middle part of the frame through a third transverse shaft pin, and the door plate can swing along the upper sliding shaft of the sliding block and the upper side of the swing rod is located on the sliding block; when the door plate is closed, the sliding block is positioned at the upper end of the door plate, and the connecting point of the second swing rod and the door plate is positioned at the lower end of the face door plate; when the door plate is opened, the door plate is covered above the shell, and the connection points of the sliding block and the second swing rod with the door plate are all positioned at the front end of the door plate.