CN115519051B

CN115519051B - Handheld cable cutting device

Info

Publication number: CN115519051B
Application number: CN202211244398.4A
Authority: CN
Inventors: 曹点点; 王中建; 李朝峰; 赵士银; 李建新
Original assignee: Jiangsu Nari Yinlong Cable Co ltd
Current assignee: Jiangsu Nari Yinlong Cable Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-10-13
Anticipated expiration: 2042-10-12
Also published as: CN115519051A

Abstract

The invention relates to the technical field of cable cutting. The invention discloses a handheld cable cutting device, wherein a guide rail is arranged at one end of a holding part, which is close to a cable, a plurality of cable holding structures are arranged on the guide rail, the cable holding structures can slide back and forth along the extending direction of the guide rail, the cable holding structures are used for forming arc holding openings which are matched with the cable to be cut, the guide rail is also provided with a cable cutting structure, the cable cutting structure is fixed at a position between any two adjacent cable holding structures in the guide rail, an elastic reset piece is arranged between the two cable holding structures and the cable cutting structure, and a folding release structure is arranged between the two cable holding structures; according to the invention, the clamping state of the cable is subjected to fitting correction by utilizing the arc-shaped clamping opening of the cable clamping structure, and then the cable is straightened and sheared by mutually separating the two cable clamping structures, so that the problem that the superposition rate of the actual shearing surface of the cable and the cross section of the cable is lower is solved.

Description

Handheld cable cutting device

Technical Field

The invention relates to the technical field of cable cutting, in particular to a handheld cable cutting device.

Background

The cable is a special wire, which is formed by combining one or a plurality of insulated wires into a wire core, wrapping an insulating layer, and wrapping a closed sheath layer outside, namely the cable is generally composed of three main parts of a conductive wire core, the insulating layer and the sheath layer. The insulating layer is usually made of rubber, paper or plastic, and the sheath layer is usually made of aluminum, lead or plastic.

In the construction process of the power cable transformation engineering, the power cable is often required to be cut, for example, the local damage of the cable is required to be cut off, and then the complete cable is connected.

I.e. the power cable is cut off and then butt welded. In the traditional power cable cutting construction, the commonly adopted tools are a clamp and a saw bow, the cable is clamped and fixed by the clamp through the insulating handle, and then the saw bow is used for cutting the power cable. The deficiencies of cutting power cables in this manner are apparent: firstly, construction is wasted time and energy, and is low in efficiency, secondly, because a cutting person adopts a manual saw bow to easily form a large angle between a cutting surface and a cable cross section, and the quality of cable connection (such as welding) can be affected due to the fact that the cutting surface is not perpendicular to the extending direction of the cable. In order to ensure the connection quality, the cutting surface needs to be subjected to leveling and repairing, and the cutting construction efficiency of the cable can be greatly reduced.

In the prior art, the electric scissors are used for cutting the cable, but the electric scissors also need to be manually used for controlling the shearing surface to be parallel to the cross section of the cable, and errors can occur in manual operation.

Therefore, it is necessary to provide a handheld shearing device that can increase the rate of coincidence of the actual shearing surface of the cable with the cross-section of the cable.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide a handheld cable cutting device, and the existing handheld cutting equipment needs to manually control the cutting surface, so that the cutting surface of a cable is difficult to be perpendicular to the extending direction of the cable, and the subsequent connection is influenced.

In order to solve the technical problems, the invention adopts the following technical scheme: the handheld cable cutting device comprises a holding part, wherein one end of the holding part, which is close to a cable, is provided with a guide rail, a plurality of cable clamping structures are arranged on the guide rail, the cable clamping structures can slide back and forth along the extending direction of the guide rail, the cable clamping structures are used for forming arc clamping openings which are matched with the cable to be cut, the guide rail is also provided with a cable cutting structure, the cable cutting structure is fixed at a position between any two adjacent cable clamping structures in the guide rail, an elastic reset piece is arranged between the two cable clamping structures and the cable cutting structure, and a folding release structure is arranged between the two cable clamping structures;

when the two cable clamping structures do not clamp the cables, the folding release structure is used for folding and locking the two cable clamping structures;

when the two cable clamping structures clamp the cables, the folding release structure is used for releasing the folding state of the two cable clamping structures;

when the two cable clamping structures are in a closed state, the elastic reset piece is in a forced state;

when the two cable clamping structures are in a release state, the elastic reset pieces are used for driving the two cable clamping structures to be away from each other so that a local cable between the two cable clamping structures is straightened and is perpendicular to a shearing surface of the cable cutting structure.

Preferably, the folding and releasing device further comprises a shell for covering the folding and releasing structure.

Thus, the personnel can be prevented from being accidentally injured to a certain extent.

Preferably, the folding release structure comprises a sliding traction piece and a control body, wherein the sliding traction piece and the control body are respectively arranged on the two cable clamping structures, the control body is arranged on the holding part and can slide back and forth along the direction perpendicular to the extending direction of the guide rail, the control body is provided with a concave control chute, and the sliding traction pieces are respectively provided with a bulge so as to be nested in the control chute in a sliding manner; the two side surfaces of the control chute are inclined surfaces or curved surfaces, and the two side surfaces of the control chute are jointly extruded by sliding to fold or release the two protrusions.

Therefore, the two cable clamping structures can be controlled to move or release by simply sliding the control body back and forth, the control mode of the control chute is high in stability, and excessive release of the two cable clamping structures can be prevented.

Preferably, the arc-shaped clamping opening is provided with a veneering adjusting structure, and the veneering adjusting structure is used for being attached to the surface of the cable to be cut through deformation.

In this way, the fitting degree of the cable holding structure can be improved.

Preferably, the veneering adjusting structure comprises a first elastic piece and a second elastic piece which are sequentially overlapped and arranged at the arc-shaped clamping opening from inside to outside; the first elastic piece is an arc-shaped elastic plate with alternately arranged through grooves and outwards protruding first grooves; the second elastic piece is an arc-shaped elastic plate alternately provided with a second convex and a third convex; the distance from the second convex part to the center of the second elastic part is larger than the distance from the third convex part to the center of the second elastic part, the second convex part is nested in the through groove, the inner end of the first convex part is embedded between two adjacent second convex parts and is contacted with the outer end of the third convex part, and the third convex part is of a hollow structure.

In this way, the second elastic element stabilizes the cable substantially on a predetermined straight line during clamping, while the first elastic element corresponds to a plurality of floatable points by which it is possible to cope with the local deformations of the cable

Preferably, the cable clamping structure comprises a sliding block which is embedded in the guide rail in a sliding manner, the sliding traction piece is connected with the sliding block, the sliding block is provided with a pair of rigid arc plates used for forming an arc clamping opening, the same side of the pair of rigid arc plates is provided with a limiting rod, the pair of rigid arc plates are all sleeved on the limiting rod through sliding holes in a sliding manner, and the limiting rod is sleeved with a spring used for driving the pair of rigid arc plates to be in a folding state.

Preferably, an opening and closing mechanical plate is arranged on one side of the pair of rigid arc plates, which is close to the limiting rod, and can slide along the extending direction of the guide rail and reset, and the opening and closing mechanical plate is triangular or trapezoidal so as to be extruded between the pair of rigid arc plates in a reciprocating manner, so that the pair of rigid arc plates are in an opened or closed state.

Preferably, the control body drives the opening and closing mechanical plate to slide through the extrusion connecting piece, so that when the control body drives the two protrusions to close, the opening and closing mechanical plate simultaneously drives the pair of rigid arc plates to open.

Therefore, when the two cable clamping structures are close to each other, namely, when the two cable clamping structures are in a state before clamping the cable, the two cable clamping structures are just in an open state, and when the two cable clamping structures are far away from each other and straighten, the two cable clamping structures are just in a closed state, so that the automation degree of the device is improved.

Preferably, the cable cutting structure comprises a bevel gear and a bevel gear ring, wherein the bevel gear is arranged on the holding part through a driving shaft penetrating through a guide rail, the bevel gear ring is rotationally arranged on the guide rail and meshed with the bevel gear, a plurality of cutters are uniformly arranged on the non-toothed ring surface of the bevel gear ring, the cutters can slide along the radial direction of the non-toothed ring surface and reset, the bevel gear ring is rotationally sleeved with a squeezing ring, and the position of the squeezing ring and the position of the guide rail are relatively fixed; the inner side of the extrusion ring is provided with a convex cambered surface and a concave cambered surface;

when the convex cambered surface of the extrusion ring extrudes the cutters, the cutter tips of the plurality of cutters are folded with the center of the extrusion ring;

when the concave cambered surface of the extrusion ring contacts the cutters, the cutter tips of the plurality of cutters are mutually separated to form a channel for passing through the cable to be cut.

Therefore, the extrusion forces of the plurality of cutters on the cable are mutually offset, and the cable is prevented from being torn.

Preferably, the cutter is fan-shaped, and the angle corresponding to the single concave cambered surface is three times of the central angle of the cutter.

In this way, the cable can be cut completely in the rotating process of the cutter.

The invention has the beneficial effects that: in the prior art, it is often difficult to determine whether the shearing surface of the electric scissors or the hydraulic scissors is always located on the cross section of the cable, so that the actual cutting surface is not ideal, but in the handheld cable cutting device of the embodiment, firstly, the clamping state of the cable is laminated and corrected by using the arc-shaped clamping opening of the cable clamping structure, then the cable is straightened by mutually separating the two cable clamping structures, the straightened part is basically located on the same straight line, and the straight line exactly vertically passes through the shearing surface of the shearing structure, so as to automatically complete the calibration process of the cable and the shearing surface; moreover, in this embodiment, the power source for driving the cable to straighten is a spring structure, the force of the straightening is easy to control, when some cables are low in structural strength, the cable is not easy to break, but the telescopic driving structure (such as a linear motor) in the prior art is generally quantitative telescopic, once the set amount is large, the telescopic driving structure is easy to stretch the cable.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

Fig. 2 is a schematic view of another angle structure according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a folding release structure according to a first embodiment of the present invention.

Fig. 4 is a schematic view illustrating a structure of a folding and releasing structure according to another embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a second embodiment of the present invention (without a housing).

Fig. 6 is a schematic structural view of a cable clamping structure according to a second embodiment of the invention.

Fig. 7 is a schematic structural view of a veneer adjusting structure according to a second embodiment of the present invention.

Fig. 8 is a cross-sectional view of a facing adjustment structure of a second embodiment of the present invention.

Fig. 9 is a cable cutting structure according to a third embodiment of the present invention.

Reference numerals illustrate: 1. a grip portion; 2. a guide rail; 21. a slide bar; 3. a cable clamping structure; 31. a slide block; 32. a rigid arcuate plate; 33. a limit rod; 34. a spring; 35. an opening and closing mechanical plate; 36. extruding the connecting piece; 4. a cable cutting structure; 41. bevel gears; 42. conical toothed ring; 43. a pressing ring; 44. a convex cambered surface; 45. a concave cambered surface; 46. a cutter; 5. an elastic reset piece; 6. folding the release structure; 61. sliding the traction member; 62. a control body; 63. controlling the chute; 64. a driving cylinder; 65. a protrusion; 7. a housing; 8. a veneer adjusting structure; 81. a first elastic member; 82. a second elastic member; 83. penetrating a groove; 84. the first part is protruded outwards; 85. the second protruding part is protruding outwards; 86. and the third is convex.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

As shown in fig. 1-4, the handheld cable cutting device of the first embodiment includes a holding portion 1, one end of the holding portion 1, which is close to a cable, is provided with a guide rail 2, two cable clamping structures 3 are provided on the guide rail 2, the cable clamping structures 3 can both slide reciprocally along the extending direction of the guide rail 2, the cable clamping structures 3 are used for forming an arc clamping opening which is anastomotic with a cable to be cut, the guide rail 2 is also provided with a cable cutting structure 4, the cable cutting structure 4 is fixed in the guide rail 2 at a position between any two adjacent cable clamping structures 3, an elastic reset piece 5 is provided between the two cable clamping structures 3 and the cable cutting structure 4, and a folding release structure 6 is provided between the two cable clamping structures 3; when neither of the two cable-holding structures 3 holds a cable, the folding release structure 6 is used to fold and lock the two cable-holding structures 3 to each other; when both the two cable holding structures 3 hold cables, the folding release structure 6 is used for releasing the folding state of the two cable holding structures 3; when the two cable clamping structures 3 are in the closed state, the elastic reset piece 5 is in the forced state; when the two cable clamping structures 3 are in the released state, the elastic reset pieces 5 are used for driving the two cable clamping structures 3 to be away from each other, so that the local cables between the two cable clamping structures 3 are straightened and are perpendicular to the shearing surface of the cable cutting structure 4. Also comprises a housing 7, the housing 7 is used for covering the folding release structure 6. The folding release structure 6 comprises a sliding traction piece 61 respectively arranged on the two cable clamping structures 3 and a control body 62 arranged on the holding part 1, wherein the control body 62 can slide reciprocally along the direction vertical to the extending direction of the guide rail 2, the control body 62 is provided with a concave control chute 63, and the sliding traction pieces 61 are respectively provided with a protrusion 65 so as to be nested in the control chute 63 in a sliding manner; both side surfaces of the control chute 63 are inclined or curved, and both side surfaces of the control chute 63 are jointly extruded by sliding to fold or release the two protrusions 65.

In this embodiment, the cable-gripping structure 3 is a pneumatic finger and the cable-cutting structure 4 is a double-edged intersecting scissors structure.

When the cutting device is used, the right end of the scissor structure is controlled by the motor to rotate downwards so as to leave enough openings, at the moment, the right ends of the pneumatic fingers are opened by opening the pneumatic fingers, as shown in fig. 2, the right ends of the pneumatic fingers are in an opened state, at the moment, workers only need to sleeve the pneumatic fingers and the scissor structure on a cable to be cut from the right side, and in the process, the extending direction of the guide rail 2 and the extending direction of the cable to be cut are required to be driven to be approximately parallel.

Then, the control body 62 is driven to slide upwards by the driving cylinder 64, a sliding limiting connection structure (not shown) is arranged between the control body 62 and the holding portion 1, and a control chute 63 is arranged on one side of the control body 62 close to the guide rail 2, in this embodiment, the control chute 63 is basically in a trapezoid shape with an upper end wider than a lower end until the protrusion 65 slides relatively to the lower end of the control chute 63, and at this time, the lower end of the control chute 63 is narrower, so that the two protrusions 65 are guided to fold.

At this time, the sliding traction member 61 is driven by the protrusion 65 to slide transversely, so that the two sliding traction members 61 are folded together, the sliding traction member 61 is connected to the sliding block 31, the sliding block 31 is slidably mounted on the sliding rod 21 of the guide rail 2 through the hole, the elastic restoring member 5 in this embodiment is a restoring spring 34, the restoring spring 34 is sleeved on the sliding rod 21, the inner end of the restoring spring 34 is limited by the guide rail 2, and the outer end of the restoring spring 34 is pressed by the sliding block 31, so that the restoring spring 34 is compressed, and therefore, the distance between the two pneumatic fingers is closer than that between the two pneumatic fingers in the initial state.

Secondly, two pneumatic fingers are controlled to clamp the cable, as the clamping of the two pneumatic fingers is designed into arc clamping openings, the arc clamping openings can adjust the gesture of the cable in the process of folding and clamping, so that the cable positioned at the two arc clamping openings is positioned on the same straight line, then the control cylinder 64 is controlled to drive the control body 62 to slide downwards until the boss 65 relatively slides to the upper end of the control chute 63, the upper end of the control chute 63 is wider, at the moment, the control chute 63 obviously cannot carry out folding constraint on the two bosses 65, and therefore the reset spring 34 can squeeze the two sliding blocks 31 to slide outwards, and the distance between the two pneumatic fingers is gradually kept away until the cable is straightened.

In the process that the cable is straightened, the straightened part of the cable is basically positioned on the same straight line, the straight line just vertically passes through the shearing surface of the shearing structure, in the prior art, the actual cutting surface is often not ideal because whether the shearing surface of the electric scissors or the hydraulic scissors is always positioned on the cross section of the cable is difficult to judge manually, the handheld cable cutting device of the embodiment firstly clamps the cable through local lamination, clamps and corrects the clamping state of the cable through the arc-shaped clamping opening of the cable clamping structure 3, then the cable is straightened through the mutual separation of the two cable clamping structures 3, the straightened part is basically positioned on the same straight line, and the straight line just vertically passes through the shearing surface of the shearing structure, so as to automatically complete the calibration process of the cable and the shearing surface; moreover, in the present embodiment, the power source for driving the cable to straighten is a spring 34 structure, the force of the straightening is easy to control, and when some cables have low structural strength, the cables are not easy to break, while the telescopic driving structure (such as a linear motor) in the prior art is generally quantitative telescopic, once the set amount is large, the telescopic driving structure is easy to stretch the cables.

Example two

As shown in fig. 5 and 6, the second embodiment is different from the first embodiment in that:

the cable clamping structure 3 in this embodiment includes a sliding block 31 slidably embedded in the guide rail 2, a sliding traction member 61 is connected with the sliding block 31, the sliding block 31 is provided with a pair of rigid arc plates 32 for forming an arc clamping opening, the same side of the pair of rigid arc plates 32 is provided with a limit rod 33, the pair of rigid arc plates 32 are slidably sleeved on the limit rod 33 through a sliding hole, the limit rod 33 is sleeved with a spring 34, and the spring 34 is used for driving the pair of rigid arc plates 32 to be in a closed state. The pair of rigid arc plates 32 is provided with an opening and closing mechanical plate 35 on one side close to the limit rod 33, the opening and closing mechanical plate 35 can slide along the extending direction of the guide rail 2 and reset, and the opening and closing mechanical plate 35 is triangular or trapezoidal so as to be extruded between the pair of rigid arc plates 32 in a reciprocating manner, so that the pair of rigid arc plates 32 are in an opened or closed state. The control body 62 drives the opening and closing mechanical plate 35 to slide by pressing the connecting piece 36, so that when the control body 62 drives the two protrusions 65 to close, the opening and closing mechanical plate 35 simultaneously drives the pair of rigid arc plates 32 to open.

When the control body 62 is driven to slide upwards by the driving cylinder 64, the control body 62 drives the extrusion connector 36 to slide longitudinally, and when the extrusion connector 36 slides longitudinally, the outer side of the extrusion connector 36 is provided with an inclined surface, the inclined surface can extrude the opening and closing mechanical plate 35 to slide leftwards, the inner side width of the opening and closing mechanical plate 35 is far greater than the outer side width thereof, the outer side of the opening and closing mechanical plate 35 is embedded in a gap between the pair of rigid arc plates 32, and when the opening and closing mechanical plate 35 slides outwards, the opening and closing mechanical plate 35 gradually extrudes the pair of rigid arc plates 32, so that the gap between the pair of rigid arc plates 32 is larger and larger.

The mechanical plate 35 is provided with a sliding through groove 83, the guide rail 2 is provided with a sliding reset rod embedded in the sliding through groove 83, and an elastic piece is further arranged in the sliding through groove 83.

When the driving cylinder 64 drives the control body 62 to slide downwards, the inclined surface of the extrusion connecting piece 36 gradually reduces the extrusion degree of the opening and closing mechanical plate 35, the elastic piece of the sliding through groove 83 gradually resets the opening and closing mechanical plate 35, and the spring 34 sleeved by the limiting rod 33 gradually drives the pair of rigid arc plates 32 to fold.

Therefore, through the above-mentioned structure arrangement, when two cable clamping structures 3 of this embodiment are close to each other, namely when the state before the centre gripping cable, cable clamping structure 3 just in time is in the open state, and when two cable clamping structures 3 of this embodiment keep away from each other and straighten, cable clamping structure 3 just in time is in the close state. In the first embodiment, the opening and closing of the cable clamping structure 3 needs to be controlled respectively, and the present embodiment realizes higher automation of the above steps.

As shown in fig. 7 and 8, the second embodiment is also different from the first embodiment in that: the arc clamping mouth is equipped with wainscot regulation structure 8, wainscot regulation structure 8 is used for through deformation in order to laminate in waiting to cut the cable surface. The veneering adjusting structure 8 comprises a first elastic piece 81 and a second elastic piece 82 which are sequentially overlapped and arranged at the arc-shaped clamping opening from inside to outside; the first elastic piece 81 is an arc elastic plate alternately provided with a through groove 83 and an outer convex piece 84; the second elastic piece 82 is an arc-shaped elastic plate alternately provided with a convex second 85 and a convex third 86; the distance from the second convex part 85 to the center of the second elastic part 82 is larger than the distance from the third convex part 86 to the center of the second elastic part 82, the second convex part 85 is nested in the through groove 83, the inner end of the first convex part 84 is embedded between two adjacent second convex parts 85 and is contacted with the outer end of the third convex part 86, and the third convex part 86 is of a hollow structure.

When the shape of the cable and the arc-shaped clamping opening have certain difference, or the ovality of the cable is larger, or the cable is deformed seriously, the arc-shaped clamping opening prefabricated in a factory is difficult to be attached to the cable, and the first elastic piece 81 and the second elastic piece 82 are overlapped, so that elastic deformation attachment can be carried out to a certain extent.

Wherein, the second protruding part 85 is nested into the through groove 83 to improve the overlapping tightness of the first elastic part 81 and the second elastic part 82, while the second protruding part 85 has poor elasticity and is difficult to deform greatly, so as to ensure the basic deviation rectifying capability in the cable straightening process.

When the cable has a partial bulge, the partial bulge presses the bulge one 84, and the bulge three 86 has a hollow structure, so that the extrusion force of the cable partial bulge is transmitted to the bulge three 86 through the bulge one 84, the bulge three 86 is driven to be compressed, and the position of the bulge one 84 moves outwards.

The veneering adjusting structure 8 of the embodiment stabilizes the cable on a predetermined straight line when clamping by the two protruding parts 85, and the first protruding part 84 corresponds to a point between the two protruding parts 85, which can float, and the local deformation of the cable can be dealt with by these floating points.

Example III

As shown in fig. 9, the third embodiment is different from the second embodiment in that:

unlike the second embodiment, in which the cable cutting structure 4 is a scissor structure with intersecting blades, the cable cutting structure 4 of the present embodiment includes a bevel gear 41 and a bevel gear ring 42, the bevel gear 41 is mounted on the grip portion 1 by penetrating the driving shaft through the guide rail 2 (the middle fixing portion of the guide rail 2 is shown in fig. 9, the driving shaft penetrates through the middle fixing portion), the bevel gear ring 42 is rotatably provided on the guide rail 2 and is engaged with the bevel gear 41, three cutters 46 are uniformly provided on the non-toothed surface of the bevel gear ring 42, the cutters 46 can slide and reset along the radial direction of the non-toothed surface, the bevel gear ring 42 is rotatably sleeved with a pressing ring 43, and the positions of the pressing ring 43 and the guide rail 2 are relatively fixed; the inner side of the extrusion ring 43 is provided with a convex cambered surface 44 and a concave cambered surface 45; when the convex cambered surface 44 of the extrusion ring 43 extrudes the cutters 46, the cutter tips of the three cutters 46 are folded with the center of the extrusion ring 43; when the concave arc surface 45 of the extrusion ring 43 contacts the cutters 46, the cutter tips of the three cutters 46 are away from each other to form a channel for passing through the cable to be cut; the angle corresponding to the single concave arc surface 45 is three times the central angle of the cutter 46.

When the bevel gear 41 drives the bevel gear ring 42 to rotate and the three cutters 46 are located on the concave arc surface 45 of the extrusion ring 43, the three cutters 46 slide outwards along the radial direction of the bevel gear ring 42, so that the cutter tips of the three cutters 46 are far away from each other, a gap is formed between the cutter tips of the three cutters 46, and the broken cable stretches into the gap until being clamped by the cable clamping structure 3, and the cable clamping structure 3 is straightened in the same process as the embodiment.

When the cable is cut, the bevel gear 41 drives the bevel gear ring 42 to rotate until the outer ends of the three cutters 46 are extruded by the inner convex cambered surface 44 of the extrusion ring 43 to pierce the cable, at this time, the bevel gear 41 continues to drive the bevel gear ring 42 to rotate, the three cutters 46 still keep the pierced state, the cable position is fixed, and the bevel gear ring 42 drives the three cutters 46 to rotationally cut the cable, so that the cutting process is completed.

In some cable to be cut, the cable is cut by using a shear structure, the shear structure is generally used for pressing and cutting on one side or pressing and cutting on two sides, and because the shear structure is limited by the shape of the shear structure, the applied pressures cannot offset each other, so that the cable is easy to deviate when being cut, and is easy to be directly torn off, and the acting forces of the three cutters 46 can offset each other in the cable cutting structure 4 of the embodiment, so that the stability of the cable position is ensured, the deviation of the cable is reduced, and the probability of cable tearing off is reduced.

In summary, both the first and second embodiments can directly cut the unbroken cable by using the scissor structure, but the third embodiment cannot directly cut the cable, and it is necessary to cut the cable first and then finish the end face.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a handheld cable cutting device, includes grip (1), its characterized in that, grip (1) is close to the one end of cable and is equipped with guide rail (2), be equipped with a plurality of cable clamp structure (3) on guide rail (2), cable clamp structure (3) homoenergetic are followed the direction of extension of guide rail (2) is reciprocal to slide, cable clamp structure (3) are used for forming the arc grip that is identical with the cable that waits to cut line, still be equipped with cable cutting structure (4) on guide rail (2), cable cutting structure (4) are fixed in guide rail (2) are located arbitrary adjacent two cable clamp structure (3) between these two cable clamp structure (3) with cable cutting structure (4) all are equipped with elastic reset piece (5), are equipped with between these two cable clamp structure (3) and close up release structure (6);

when neither of the two cable clamping structures (3) clamps a cable, the folding release structure (6) is used for folding and locking the two cable clamping structures (3) with each other;

when both cable clamping structures (3) clamp cables, the folding release structure (6) is used for releasing the folding state of the two cable clamping structures (3);

when the two cable clamping structures (3) are in a closed state, the elastic reset piece (5) is in a forced state;

when the two cable clamping structures (3) are in a release state, the elastic reset pieces (5) are used for driving the two cable clamping structures (3) to be away from each other, so that a local cable between the two cable clamping structures (3) is straightened and perpendicular to a shearing surface of the cable cutting structure (4).

2. A hand-held cable cutting device according to claim 1, further comprising a housing (7), the housing (7) being adapted to encase the fold release structure (6).

3. A hand-held cable cutting device according to claim 1 or 2, characterized in that the closing release structure (6) comprises a sliding traction member (61) provided to the two cable clamping structures (3), respectively, and a control body (62) provided to the grip (1), the control body (62) being reciprocally slidable along a direction perpendicular to the direction in which the guide rail (2) extends, the control body (62) being provided with an inwardly concave control chute (63), the sliding traction members (61) each being provided with a protrusion (65) for sliding nesting into the control chute (63); both side surfaces of the control chute (63) are inclined surfaces or curved surfaces, and the two side surfaces of the control chute (63) are jointly extruded by sliding to enable the two protrusions (65) to be folded or released.

4. A hand-held cable cutting device according to claim 3, characterized in that the arc-shaped clamping opening is provided with a facing adjustment structure (8), the facing adjustment structure (8) being adapted to be applied to the surface of the cable to be cut by deformation.

5. A hand-held cable cutting device according to claim 4, wherein the facing adjustment structure (8) comprises a first elastic member (81) and a second elastic member (82) which are arranged in the arc-shaped clamping opening in a superimposed manner from inside to outside; the first elastic piece (81) is an arc-shaped elastic plate alternately provided with a through groove (83) and a convex groove (84); the second elastic piece (82) is an arc-shaped elastic plate alternately provided with a convex second (85) and a convex third (86); the distance from the second convex second (85) to the center of the second elastic piece (82) is larger than the distance from the third convex third (86) to the center of the second elastic piece (82), the second convex second (85) is nested in the through groove (83), the inner end of the first convex first (84) is embedded between two adjacent second convex second (85) and is contacted with the outer end of the third convex third (86), and the third convex third (86) is of a hollow structure.

6. A handheld cable cutting device according to claim 5, wherein the cable holding structure (3) comprises a sliding block (31) slidably embedded in the guide rail (2), the sliding traction member (61) is connected with the sliding block (31), the sliding block (31) is provided with a pair of rigid arc plates (32) for forming the arc holding opening, the same side of the pair of rigid arc plates (32) is provided with a limit rod (33), the pair of rigid arc plates (32) are slidably sleeved on the limit rod (33) through a sliding hole, the limit rod (33) is sleeved with a spring (34), and the spring (34) is used for driving the pair of rigid arc plates (32) to be in a closed state.

7. A hand-held cable cutting device according to claim 6, wherein a pair of rigid curved plates (32) is provided with an opening and closing mechanical plate (35) on a side close to the limit bar (33), the opening and closing mechanical plate (35) can slide along the extending direction of the guide rail (2) and reset, and the opening and closing mechanical plate (35) is triangular or trapezoidal so as to be reciprocally extruded between the pair of rigid curved plates (32) to enable the pair of rigid curved plates (32) to be in an opened or closed state.

8. A hand-held cable cutting device according to claim 7, wherein the control body (62) drives the mechanical shutter (35) to slide by means of the compression connection (36) so that the mechanical shutter (35) simultaneously drives the pair of rigid curved plates (32) open when the control body (62) drives the two projections (65) together.

9. A handheld cable cutting device according to claim 1, wherein the cable cutting structure (4) comprises a bevel gear (41) and a bevel gear ring (42), the bevel gear (41) is installed on the holding part (1) through a driving shaft penetrating through the guide rail (2), the bevel gear ring (42) is rotatably arranged on the guide rail (2) and meshed with the bevel gear (41), a plurality of cutters (46) are uniformly arranged on a non-toothed ring surface of the bevel gear ring (42), the cutters (46) can slide along the radial direction of the non-toothed ring surface and reset, a squeezing ring (43) is rotatably sleeved on the bevel gear ring (42), and the position of the squeezing ring (43) and the position of the guide rail (2) are relatively fixed; the inner side of the extrusion ring (43) is provided with a convex cambered surface (44) and a concave cambered surface (45);

when the convex cambered surface (44) of the extrusion ring (43) extrudes the cutters (46), the cutter tips of the plurality of cutters (46) are folded with the center of the extrusion ring (43);

when the concave arc surface (45) of the extrusion ring (43) contacts the cutters (46), the cutter tips of the plurality of cutters (46) are separated from each other to form a channel for passing through the cable to be cut.

10. A hand-held cable cutting device according to claim 9, wherein the cutters (46) are sector-shaped, the angle corresponding to a single concave arc surface (45) being three times the central angle of the cutters (46).