CN107968362A - A kind of cable insulation radial cuts device and cable insulation peel-off device - Google Patents

Abstract

The invention discloses a cable insulation layer radial cutting device and cable insulation layer stripping equipment. The radial cutting device for the cable insulation layer includes a radial cutting drive mechanism and a pair of radial cutting blades, the blades of each radial cutting blade are in the shape of a concave arc, wherein the blades of the pair of radial cutting blades are opposite to each other , and can move towards each other under the drive of the radial cutting drive mechanism, so that the insulation layer can be radially cut on both sides of the cable sample at the same time. The cable insulation layer radial cutting device of the present invention can cut simultaneously on both sides of the cable sample, and the insulation layer can be cut off with one feeding, and it is easy to adapt to cable samples of different diameters, and acts on the cable sample when cutting The upper force can be automatically balanced, thus greatly improving the efficiency of insulating layer stripping.

Description

A radial cutting device for cable insulation layer and stripping equipment for cable insulation layer

technical field

The invention relates to the technical field of cable preparation and detection, in particular to a radial cutting device for a cable insulation layer, which is used for axially cutting the insulation layer of a cable sample for easy peeling. The invention also relates to a cable insulation stripping device.

Background technique

The role of cables in power transmission and information transmission is irreplaceable, and it has an important impact on people's daily life and production. Due to the large amount of cable manufacturing and use, and there are many types of cables, the performance of the cables should be tested before use to confirm whether they meet the conditions of use. When testing a cable, a cable sample of a certain length (for example, 1.5 meters) is generally selected, and the insulating layers at both ends are stripped and removed to expose the core for relevant testing. In the prior art, the peeling and removal of the insulating layer at both ends of the cable sample mainly relies on manual operation, which is time-consuming and laborious, which affects the efficiency of cable testing, and is also easy to damage the cable core, affecting the accuracy of testing results.

Contents of the invention

In view of the aforementioned problems, the main purpose of the present invention is to provide a radial cutting device for the cable insulation layer, which can conveniently and quickly cut off the insulation layer on the cable sample in the radial direction, thereby providing convenience for the subsequent work of stripping the insulation layer, and then Improve the efficiency of cable sample preparation work.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A radial cable insulation layer cutting device is used to cut the insulation layer of a cable sample in the radial direction. It includes a radial cutting drive mechanism and a pair of radial cutting blades. The blade shape of each radial cutting blade is Concave circular arc shape, wherein the blades of a pair of radial cutting blades face each other and can move towards each other under the drive of said radial cutting drive mechanism, so that the insulation layer is radially cut simultaneously on both sides of the cable sample. cutting.

Preferably, the radial cutting device includes a left-handed screw and a pair of radial screw nuts with opposite directions, and the radial screw nuts are respectively connected with the left-handed thread part and the right-handed thread of the left-handed screw. Partially mated, a pair of radial cutting blades are respectively secured to one of the radial lead screw nuts.

Preferably, the radial cutting device further includes a pair of radial nut seats, a pair of radial blade holders and a pair of radial blade holder connecting plates, and each radial cutting blade is fixedly mounted on one of the radial blade holders , each radial blade holder is fixed on one of the radial blade holder connecting plates, and each radial blade holder connecting plate is connected to the corresponding radial screw nut through one of the radial nut seats, so as to realize the radial cutting blade Connection to radial screw nut.

Preferably, the radial blade frame is L-shaped, including long sides and short sides perpendicular to each other, wherein the long side is fixed to the connecting plate of the radial blade frame, and the radial cutting blade is fixed on the on the short side.

Preferably, each radial cutting blade is a plate-like structure having a rake face and a relief face to form said cutting edge, and in the assembled state, the rake faces of the two radial cutting blades are coplanar, preferably at In the same vertical plane, the flanks of the two radial cutting blades are respectively located on both sides of the two coplanar rake faces.

Preferably, a blade backing plate is provided between one of the radial cutting blades and the corresponding radial blade holder, and the thickness of the blade backing plate is the same as that of the radial cutting blade.

Preferably, the radial cutting device further includes a radial cutting support, and the two ends of the left and right screw are supported on the radial cutting support, wherein the longitudinal section of the radial cutting support is E-shaped, It includes a top support plate, a middle support plate and a bottom support plate, wherein the left and right screw is supported by the middle support plate and the bottom support plate, and the radial cutting drive mechanism is installed on the top support plate superior.

Preferably, a cutting depth control mechanism is also included for monitoring the cutting resistance during radial cutting, and controlling the radial cutting driving mechanism to stop working when the cutting resistance exceeds a predetermined value.

Preferably, said depth of cut control mechanism comprises a force sensor provided on said radial cartridge.

Another object of the present invention is to provide a cable insulation stripping device for stripping off at least a part of the insulation layer of a cable sample, which includes the above-mentioned radial cable insulation layer cutting device.

The cable insulating layer radial cutting device of the present invention can cut simultaneously on both sides of the cable sample, the insulating layer can be cut off by one feeding, and it is easy to adapt to cable samples of different diameters, and acts on the cable sample when cutting The force on the machine can be automatically balanced, thus greatly improving the efficiency of insulating layer stripping.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of a radial cutting device for cable insulation layer according to the present invention.

Figure 2 is a left sectional view of the radial cutting device.

Figure 3 is a front view of the radial cutting device.

Fig. 4 is a schematic perspective view of a cable insulation stripping device according to a preferred embodiment of the present invention.

Fig. 5 is a front sectional view of a cable insulation stripping device according to a preferred embodiment of the present invention.

Fig. 6 is a top view of the cable insulation stripping device according to the preferred embodiment of the present invention.

Fig. 7 is a front sectional view of the clamping device in the cable insulation stripping device of the present invention.

Fig. 8 is a left side view of the clamping device.

Fig. 9 is a right side view of the clamping device.

Fig. 10 is a schematic perspective view of the clamping device.

Fig. 11 is a front sectional view of the tensioning device in the cable insulation stripping device of the present invention.

Fig. 12 is a sectional view of part A-A in Fig. 11 .

Fig. 13 is a schematic perspective view of the axial cutting device in the cable insulation layer stripping device of the present invention.

FIG. 14 is a left cross-sectional view of the axial cutting device of FIG. 13 .

FIG. 15 is a top view of the axial cutting device of FIG. 13 .

Fig. 16 is a front sectional view of the axial cutting device of Fig. 13 .

Fig. 17 is a cross-sectional view of the limit mechanism in the axial cutting device of Fig. 13 .

Fig. 18 is a front sectional view of the longitudinal feeding device in the cable insulation stripping equipment of the present invention.

Fig. 19 is a top view of the longitudinal feeding device.

Explanation of reference signs:

01. Base, 02. Longitudinal feeding device, 03. First clamping device, 03'. Second clamping device, 04. Radial cutting device, 05. Axial cutting device, 06. Tensioning device;

1. Clamping motor, 2. Key, 3. Coupling, 4. Bolt, 5. Nut, 6. Washer, 7. Screw, 8. End cover, 9. Angular contact ball bearing, 10. Support seat, 11 .Spline shaft, 12. Spring, 13. Clutch sleeve, 14. Lower coupling, 15. Upper coupling shaft, 16. First synchronous pulley, 17. Key, 18. First synchronous toothed belt, 19 .Second synchronous pulley, 20. Key, 21. Nut, 22. Clamping end cover, 23. Sleeve, 24. Bearing, 25. First left and right screw, 26. Clamping screw nut, 27. Screw, 28. Nut seat, 29. Clamping slide plate, 30. Clamping bracket, 31A. Clamping arm, 31B. Clamping V-shaped block, 32. Clamping guide rail, 34. Guide rail pressing piece, 35. Guide rail support Seat, 36. screw, 37. tensioning device connecting plate, 38. servo electric cylinder, 39. nut, 40. taper pin, 41. fixed plate;

42. Axial cutting motor, 43. Axial coupling, 44. Sleeve, 45. End cover, 46. Support seat, 47. Angular contact ball bearing, 48. Spring, 49. Limiting end cover, 50. Limiting bracket, 51. Telescopic rod, 52. Deep groove ball bearing, 53. Bearing retaining ring, 54. V-shaped roller, 55. Limiting column, 56. Axial cutting blade, 57. Axial blade bracket, 58 .Blade bracket connecting plate, 59. Axial nut seat, 60. Axial screw nut, 61. Second left and right screw, 62. Limit mechanism, 63. Cutting mechanism, 64. Left and right screw nut mechanism, 65. Axial cutting guide rail;

66. Longitudinal feed motor, 67. Longitudinal coupling, 68. Lock nut, 69. Longitudinal end cover, 70. Sleeve, 71. Longitudinal feed support, 72. Angular contact ball bearing, 73. Total slide Plate, 74. longitudinal guide rail, 75. longitudinal nut seat, 76. longitudinal feed nut, 77. longitudinal feed screw;

78. Radial cutting motor, 79. Radial coupling, 80. Lock nut, 81. Radial end cover, 82. Angular contact ball bearing, 83. Third left and right screw, 84. Radial screw Nut, 85. Radial Nut Seat, 86. Radial Blade Holder, 87. Radial Cutting Blade, 88. Radial Blade Holder Connecting Plate, 89. Radial Cutting Bracket, 90. Radial Cutting Guide, 91. Blade Pad plate.

Detailed ways

First of all, it is explained that terms related to orientation such as "left end", "right end", "above" and "below" are used in the context of the present invention. The direction of the front view is used as the reference, while "axial" and "radial" are based on the axial and radial directions of the cable sample. In addition, each component is described under the condition that it is installed on the cable insulation stripping equipment, so the viewing directions of "left view", "right view", and "top view" are all consistent with the cable insulation stripping equipment The corresponding viewing directions are the same.

A preferred embodiment of a radial cable insulation layer cutting device and a cable insulation layer stripping device of the present invention will be described in detail below with reference to FIGS. 1-19 .

The first aspect of the present invention provides a radial cutting device for the cable insulation layer, which is used to cut the insulation layer of the cable sample in the radial direction (that is, the thickness direction of the insulation layer) for subsequent peeling. 1-3 show preferred embodiments of the cable insulation layer radial cutting device of the present invention. On this basis, the present invention also provides a cable insulation layer stripping device, which includes the cable insulation layer radial cutting device provided by the present invention, wherein, Fig. 4-6 shows the cable insulation layer stripping device of the present invention The overall structure. Figures 7-19 show preferred embodiments of other components of the cable insulation stripping device of the present invention.

To facilitate the description of the radial cable insulation layer cutting device of the present invention, the cable insulation layer stripping equipment of the preferred embodiment of the present invention will be described first with reference to FIGS. 4-6 . It should be understood that when the cable insulation layer radial cutting device of the present invention is integrated in the cable insulation layer stripping equipment of the preferred embodiment of the present invention, it is easier to embody its advantages, however, the cable insulation layer radial cutting device of the present invention can also be Use on other occasions.

As shown in Figures 4-6, the cable insulation layer stripping equipment mainly includes: a base 01, a longitudinal feeding device 02, a first clamping device 03, a second clamping device 03', a radial cutting device 04 (that is, the present invention Radial cutting device for cable insulation), axial cutting device 05, and tensioning device 06. Wherein, the first clamping device 03 and the second clamping device 03' are used to clamp the two ends of the cable sample; 1. One of the second clamping devices 03, 03' exerts a force to make the clamped cable sample tight; the axial cutting device 05 is used to direction) to cut at least a part of the insulation layer of the cable sample; the radial cutting device 04 is used to cut the insulation layer of the cable sample in the radial direction; the longitudinal feeding device 02 is used to cut the insulation layer of the cable sample along the The axial direction drives the axial cutting device 05 and the radial cutting device 04 to move relative to the base 01 .

The cable insulation layer stripping equipment of the present invention can clamp and tighten the cable sample, and then the insulation layer of the cable sample can be cut axially by using the axial cutting device 05, and the radial cutting device 04 can be used to cut the insulation layer of the cable sample along the radial direction. Cut the insulation layer of the cable sample. When the axial cut and the radial cut are connected, the cut insulation layer can be easily peeled off to expose the cable core.

Specifically, as shown in Figures 1-3, the cable insulation layer radial cutting device 04 of the present invention includes a radial cutting mechanism and a pair of radial cutting blades 87, and the blade shape of each radial cutting blade 87 is a concave arc The arc radius can be determined according to the specification and size of the cable sample (such as the diameter of the cable core). Wherein, the blades of a pair of radial cutting blades 87 are opposite to each other, and can move towards each other under the drive of the radial cutting drive mechanism, so that the insulation layer is cut radially on both sides of the cable sample at the same time, until Cut through the insulation in the thickness direction.

The cable insulating layer radial cutting device of the present invention can cut simultaneously on both sides of the cable sample, and the insulating layer can be cut off in one feeding without additional rotary motion, and it is easy to adapt to cable samples of different diameters, and the cutting time is The force acting on the cable sample can be automatically balanced, thus greatly improving the efficiency of insulation layer stripping.

Preferably, the radial cutting device 04 includes a left and right screw (in order to distinguish it from the left and right screw in other devices in the corresponding cable insulation stripping equipment, it is called the third left and right screw) 83 and a As for the radial lead screw nuts 84 with opposite directions of rotation, the radial lead screw nuts 84 respectively cooperate with the left-hand thread part and the right-hand thread part of the third left-hand turn lead screw 83 . A pair of radial cutting blades 87 are respectively fixed to one of the radial screw nuts 84 . Thus, when the third left-right screw 83 rotates, the two radial screw nuts 84 will move toward or away from each other, thereby driving a pair of radial cutting blades 87 to move toward or away from the cable sample synchronously , to complete the action of radially cutting into the insulation layer or the action of retracting the knife.

Preferably, as shown in FIG. 2 , the radial cutting device 04 includes a pair of radial nut seats 85, a pair of radial blade holders 86 and a pair of radial blade holder connecting plates 88, each radial cutting blade 87 Fixedly installed on one of the radial blade holders 86, each radial blade holder 86 is then fixed on one of the radial blade holder connecting plates 88, and each radial blade holder connecting plate 88 then passes through one of the radial nut seats 85 is connected with the corresponding radial lead screw nut 84, so as to realize the connection between the radial cutting blade 87 and the radial lead screw nut 84.

Preferably, as shown in FIG. 1 , the radial blade holder 86 is L-shaped, including long sides and short sides perpendicular to each other, wherein the long side is fixed to the radial blade holder connecting plate 88, the Radial cutting blades 87 are fixed on said short sides. The L-shaped structure enables the radial cutting blade 87 to be spaced a certain distance from the blade holder connecting plate 88, especially in the radial direction of the third left and right screw screw 83, so that the radial cutting blade 87 can be spaced apart when cutting. The radial cutting device 04 itself does not interfere with the cable sample, so that the radial cutting device 04 can move to any axial position of the cable sample for cutting.

Preferably, as shown in FIG. 3 , the radial cutting device 04 further includes a pair of radial cutting guide rails 90 arranged on both sides of the third left and right screw screws 83 , and each of the radial blade holders A pair of guide rail sliders (not shown) are disposed on the connecting plate 88 for slidingly engaging with the radial cutting guide rail 90 , so as to provide a pair of radial cutting blades 87 with a smooth movement guide.

Preferably, as shown in Figures 1-3, the radial cutting device 04 further includes a radial cutting bracket 89, the radial cutting guide rail 90 is installed on the radial cutting bracket 89, and the third left-right rotation Both ends of the lead screw 83 are supported on the radial cutting bracket 89, so that the radial cutting device 04 is formed as an independent unit, so as to be installed on the overall slide 73 of the longitudinal feeding device 02, for example.

Preferably, in an unshown embodiment, the radial cutting driving mechanism may include a handwheel, and the handwheel is connected with the third left-right screw 83, for example, installed on the third left-right screw. The upper end of leading screw 83 can manually drive a pair of radial cutting blades 87 to perform cutting work.

Preferably, as shown in Figures 1-3, the radial cutting drive mechanism includes a radial cutting motor 78, the motor shaft of which is connected to the third left and right screw screw 83 through a radial coupling 79, so as to be able to The third left and right screw 83 is automatically driven to rotate.

Preferably, as shown in Figures 1-3, the radial cutting device 04 cuts along the up and down direction, that is, the third left and right screw 83 and the radial cutting guide rail 90 are arranged along the vertical direction, Accordingly, the corresponding radial cutting blades 87 cut into the insulating layer from above and below the cable sample, respectively.

Each radial cutting blade 87 is a plate-like structure having a rake face and a flank face to form the cutting edge. Preferably, as shown in Figure 3, in the assembled state, the rake faces of the two radial cutting blades 87 are coplanar, that is, they are located in the same vertical plane, while the flank faces of the two radial cutting blades 87 are respectively Located on the left and right sides of the vertical surface, the radial cutting resistance can be reduced thereby making the radial cutting process smoother. On the other hand, this arrangement also enables the rake faces of the two radial cutting blades 87 to partially overlap, so that when a cable sample with a smaller diameter is radially cut, the two radial cutting blades 87 will not will interfere with each other. In order to ensure this installation effect, a blade backing plate 91 is arranged between one of the radial cutting blades 87 and the corresponding radial blade holder 86, and the thickness of the blade backing plate 91 is the same as that of the radial cutting blade 87 .

Preferably, as shown in Figures 2-3, the longitudinal section of the radial cutting bracket 89 is E-shaped, including a top support plate 89A, a middle support plate 89B and a bottom support plate 89C, wherein the third left and right spiral The rod 83 is supported by the middle support plate 89B and the bottom support plate 89C, for example, the two ends of the third left and right screw 83 are respectively passed through bearings (preferably angular contact ball bearings 82), radial end caps 81 and lock nut 80 are supported in bearing holes on the middle support plate 89B and the bottom support plate 89C. The radial cutting motor 78 is mounted on the top support plate 89A.

When specifically installed in the cable insulation stripping equipment of the present invention, the radial cutting device 04 is installed on the total sliding plate 73 of the longitudinal feeding device 02 through the bottom support plate 89C of the radial cutting bracket 89 superior. Since the lower end of the third left and right screw screw 83 passes through the bottom supporting plate 89C, for this reason, the total sliding plate 73 is provided with a counterbore 73A (shown in FIG. 19 ) to avoid the third Rotate the lower end of the lead screw 83 and the corresponding locking nut 80 left and right.

Preferably, the radial cutting device 04 of the present invention also includes a depth-of-cut control mechanism for monitoring the cutting resistance during radial cutting, and controlling the radial cutting driving mechanism (such as radial cutting) when the cutting resistance exceeds a predetermined value. To cutting motor 78) stop working.

Preferably, the depth-of-cut control mechanism includes a force sensor disposed on the radial blade holder 86 for detecting the cutting resistance. Since the cable insulation layer and the cable core are made of different materials, the resistance of the radial cutting blade 87 will have a large difference when cutting the two materials. the predetermined value. That is, when the radial cutting blade 87 cuts through the insulating layer and contacts the cable core, the cutting resistance will obviously become larger, and the force sensor detects this change of the cutting resistance, and then the radial cutting blade 87 can be stopped in time. To the cutting motor 78, so as to ensure that the depth of cut is suitable.

Preferred implementations of other aspects of the cable insulation layer stripping device of the present invention will be described in detail below.

Preferably, as shown in Figures 4-6, the main structures of the first clamping device 03 and the second clamping device 03' are the same. Wherein, one of the two (for example, the first clamping device 03 ) is fixedly installed on the base 01 , for example, on the left end of the base 01 , and the other (for example, the second clamping device 03 ′) is movably installed on the base 01 For example, it is installed on the right end of the base 01, so that the tensioning device 06 can apply a force to the second clamping device 03', so that the second clamping device 03' moves away from the first clamping device 03, Make the clamped cable sample taut. The following mainly focuses on the first clamping device 03 to be described in detail.

Preferably, as shown in Figures 7-10, the first clamping device 03 (or the second clamping device 03') includes a pair of clamping arms 31A and a clamping drive mechanism, each of the clamping arms 31A A clamping V-shaped block 31B is provided at the free end of the two clamping V-shaped blocks 31B, and the V-shaped grooves of the two clamping V-shaped blocks 31B face each other for clamping the outer surface of the cable sample. Among them, a pair of clamping arms 31A are driven by the clamping drive mechanism to move synchronously toward each other or away from each other, so as to ensure that the symmetrical centers of the two V-shaped grooves always keep their positions unchanged, that is, to achieve centering Clamp. Therefore, on the one hand, the clamping devices 03 and 03' of the present invention can fix the axial position of the clamped cable sample relative to the positions of the axial cutting device 05 and the radial cutting device 04; The tightening device itself can accommodate cables of various diameters.

Preferably, the first clamping device 03 (or the second clamping device 03') includes a clamping bracket 30 on which both the clamping drive mechanism and the clamping arm 31A are installed. The clamping bracket 30 can be fixed directly on the base 01 (for example, for the first clamping device 03 ), or movably installed on the base 01 by means of a sliding mechanism (for example, for the second clamping device 03 ). tight device 03'). 7 and 10, it can be seen that the clamping bracket 30 is an upright I-shaped structure, has a bottom plate 30A and a top plate 30C arranged in parallel, and is vertically connected between the bottom plate 30A and the top plate 30C The vertical plate 30B, wherein the pair of clamping arms 31A are located on one side of the vertical plate 30B (may be referred to as the front side) and face up and down, and the corresponding clamping drive mechanism is located on the vertical plate 30B The other side (can be called the back side), so that the structure of the entire clamping device is very compact.

Preferably, as shown in FIGS. 7 and 10 , the first clamping device 03 (or the second clamping device 03 ′) includes a first left-handed screw 25 , the left-handed part of the first left-handed screw 25 and A clamping screw nut 26 is respectively arranged on the right-handed part. When the first left-handed screw 25 rotates, the two clamping screw nuts 26 move toward or away from each other, thereby realizing a pair of clamping screw nuts. Clamping action or loosening action of the tight arm 31A. Preferably, both ends of the first left and right screw screw 25 are supported by the top plate and the bottom plate of the clamping bracket 30, for example, through bearings 24 (preferably angular contact ball bearings), sleeves 23, clamping end caps 22 and the nut 21 are installed so that the axial direction of the first left and right screw screw 25 is fixed and can keep rotating freely. Wherein, the corresponding bearing 24 is installed in the bearing hole of the top plate 30C or the bottom plate 30A, and a sleeve 23 is also arranged in the bearing hole to limit and fix the bearing 24, and the outer end of the sleeve 23 is fixed by clamping the end cover 22. Fixed, the outer end of the clamping end cap 22 is also provided with a nut 21 .

Preferably, as shown in FIG. 7, the first clamping device 03 (or the second clamping device 03') includes a nut seat 28 and a clamping slide 29, and each clamping screw nut 26 is connected to the nut seat by a screw 27. 28, the clamping slide plate 29 is fixed to the nut seat 28, so that the clamping screw nut 26 can only move axially and cannot rotate, thereby changing the rotational movement of the first left and right screw screw 25 into Linear motion, that is, the linear motion of clamping lead screw nut 26, nut seat 28 and clamping slide plate 29. Wherein, each of the clamping arms 31A is fixedly mounted on one of the clamping slides 29, so that when the first left-right screw 25 rotates, each clamping screw nut 26 and the clamping slide 29 can The motion conversion realizes up and down motion.

Preferably, in order to realize the movement precision of the clamping slide 29, that is, the movement precision of a pair of clamping arms 31A, the vertical plate 30B of the clamping bracket 30 is also provided with a clamping guide rail 32, as shown in Figures 9-10 As shown, the clamping slide 29 is slidingly fitted with the clamping guide rail 32 , so that it can move up and down along the clamping guide rail 32 . Preferably, there are two clamping guide rails 32 installed on both sides of the first left-right screw 25 .

Preferably, as shown in Figures 7-8 and Figure 10, the clamping drive mechanism includes a clamping motor 1 (preferably a servo motor), which is installed on the back side of the vertical plate 30B of the clamping bracket 30, and Located near the bottom, the axis of the clamping motor 1 is parallel to the axis of the first left-right screw 25 . A pair of synchronous pulleys are arranged above the top plate 30C of the clamping bracket 30, which are respectively the first synchronous pulley 16 coaxial with the clamping motor 1, and the first synchronous pulley coaxial with the first left and right screw 25. The second synchronous pulley 19 of the shaft, the second synchronous pulley 19 is preferably installed on the upper end of the first left and right screw 25, and the first synchronous toothed belt 18 connects the first synchronous pulley 16 and the first synchronous pulley 16. Two synchronous pulleys 19 are connected together. When the first synchronous pulley 16 rotates under the drive of the clamping motor 1, the first synchronous toothed belt 18 transmits the rotational motion to the second synchronous pulley 19, thereby driving the first left-right rotation The lead screw 25 rotates, thereby transmitting the rotational motion of the clamp motor 1 in parallel from the rear side to the front side of the vertical plate 30B of the clamp bracket 30, thereby driving the pair of clamp arms 31A to move up and down.

Preferably, in order to ensure that the clamping force of the clamping device is moderate, a safety clutch device is also provided in the transmission path from the clamping motor 1 to the first left and right screw 25, which is used for After clamping, the torque transmission from the clamping motor 1 to the first left and right screw 25 is automatically disconnected, so as to prevent the cable sample from being pinched by excessive clamping force.

Specifically, as shown in Figure 7, the safety clutch device includes:

The spline shaft 11 is installed on the vertical plate 30B of the clamping bracket 30 through the support base 10, and the lower end of the spline shaft 11 is connected with the motor shaft of the clamping motor 1 through the shaft coupling 3, and the spline shaft 11 passes through The angular contact ball bearing 9 cooperates with the support seat 10 to realize the limit of the spline shaft 11 in the horizontal direction, and the support seat 10 and the end cover 8 are connected by screws 7, so that the angular contact ball bearing is upwardly supported by the end cover 8 9, thereby realizing the limitation of the spline shaft 11 in the up and down direction;

A spring 12 is sleeved on the upper end of the spline shaft 11;

The lower coupling 14 has an inner hole, the inner hole is a spline hole, used to cooperate with the spline part of the spline shaft 11, the lower end surface of the lower coupling 14 is against the upper end of the spring 12, The lower joint 14 is upwardly supported by the spring 12, and the upper end surface of the lower joint 14 is a wave surface;

The upper coupling sub-shaft 15, the lower end surface of which is a corrugated surface, is used to cooperate with the corrugated surface of the lower coupling sub-14 (for example, complementary in shape) to transmit torque. When the torsional resistance is too large, the lower coupling sub-14 will Downshifting and compressing said spring 12, so that a pair of corrugated surfaces that cooperate with each other disengage, form idling, and terminate the transmission of torque; and

Fixed sleeve 13, which is fixedly installed on the vertical plate 30B of the clamping bracket 30, the upper part of the spline shaft 11, the spring 12, the lower joint 14, and the upper joint shaft 15 The lower part of each is located in the inner hole of the fixed sleeve 13 .

The function of the fixing sleeve 13 is to act as a casing of the safety clutch device on the one hand, and to support the upper end of the spline shaft 11 and the lower end of the lower coupling sub-shaft 15 on the other hand.

The middle part of the upper coupling sub-shaft 15 is mounted on the top plate 30C of the clamping bracket 30 through a bearing, and the upper end of the upper coupling sub-shaft 15 is mounted with the first synchronous pulley 16 through a key 17 .

The coupling 3 is connected with the motor shaft of the clamping motor 1 and with the spline shaft 11 through a key 2 . The coupling 3 includes two halves connected together by bolts 4 , nuts 5 and washers 6 .

The second synchronous pulley 19 is connected with the upper end of the first left-right screw 25 through a key 20 .

When working specifically, the clamping motor 1 transmits power to the spline shaft 11 through the key 2 and the coupling 3, and the spline shaft 11 transmits power to the upper joint through the spring 12 and the lower joint 14 Shaft 15, and then transmitted to the first synchronous pulley 16, the first synchronous pulley 16 transmits power to the first synchronous belt 18 and the second synchronous pulley 19 Left and right screw 25, the first left and right screw 25 converts the rotary motion into clamping arm 31A and clamping V The linear movement of the type block 31B realizes the centering and clamping of cable samples with different diameters. After the cable sample is clamped, the safety clutch device starts to work, and the torque on the intermeshed wave surface of the lower joint 14 and the upper joint shaft 15 increases, forcing the lower joint 14 to move downward and compress Spring 12 until the lower coupling 14 and the upper coupling sub-shaft 15 disengage, so that the power of the clamping motor 1 is no longer transmitted to the clamping V-shaped block 31B, preventing the problem of excessive clamping force. At the same time, since there is a self-locking effect between the first left and right screw 25 and the clamping screw nut 26, it can prevent the reverse movement of the clamping V-shaped block 31B and loosen the clamped cable sample, thus realizing The constant force centering clamping of the cable sample is realized.

In particular, since the pair of clamping arms 31A of the first clamping device 03 or the second clamping device 03' clamps the cable sample from both sides of the cable sample, in the clamped state, There is always a gap between a pair of clamping V-shaped blocks 31B, and the gap can be used by the corresponding cutting tool for cutting operations, such as axial cutting. Thus, the clamping device of the invention enables axial cutting of the insulation over the entire length of the cable sample, ie the clamping device does not interfere with the cutting action of the axial cutting device 05 .

The first clamping device 03 or the second clamping device 03' is movably mounted on the base 01 through the tensioning device 06, that is, the tensioning device 06 is arranged on the corresponding clamping device and between the base 01. Preferably, the tensioning device 06 has a movable part, and the clamping bracket 30 of the first clamping device 03 or the second clamping device 03' is fixed on the movable part of the tensioning device 06 , the movable part of the tensioning device 06 is slidably installed on the base 01 . Therefore, when the movable part of the tensioning device 06 slides relative to the base 01, it can drive the corresponding clamping device to move relative to the other clamping device, so that the clamped cable sample can be stretched. tight.

Preferably, as shown in FIGS. 11-12 , the tensioning device 06 includes: a pair of guide rail supports 35 , a guide rail pressing piece 34 , a tensioning device connecting plate 37 , and a servo electric cylinder 38 . Wherein, the lower end of the guide rail support 35 is a rectangular guide rail structure, and the base 01 is provided with a matching rectangular guide rail groove, and the rectangular guide rail structure is slidably installed in the rectangular guide rail groove, and by means of the guide rail The pressing piece 34 is fixed and limited to prevent the guide rail support 35 from moving in a direction other than the sliding direction. The tensioning device connecting plate 37 is located between a pair of guide rail supports 35, and the two ends are respectively fixed to one of the guide rail supports 35, thereby connecting the pair of guide rail supports 35 into a whole, and the tensioning device connects The plate 37 and the pair of rail supports 35 constitute the movable part of the tensioning device. The servo electric cylinder 38 is fixedly installed on the base 01 through a fixing plate 41 , and the push rod of the servo electric cylinder 38 is connected with the tensioning device connecting plate 37 through a nut 39 . Therefore, when the push rod of the servo electric cylinder 38 reciprocates, the pair of guide rail supports 35 can be driven to move relative to the base 01 through the tensioning device connecting plate 37, thereby realizing the corresponding clamping device 03 or 03' movement, and then realize the tightening of the cable sample.

As shown in FIG. 12 , the bottom plate 30A of the clamping bracket 30 of the clamping device 03 or 03' is fixed on the upper end surface of the guide rail support 35 by screws 36 and positioning pins (such as conical pins 40).

During specific work, after the two ends of the cable sample are clamped by the first clamping device 03 and the second clamping device 03', the servo electric cylinder 38 starts to work, and the push rod of the servo electric cylinder 38 Push the tensioning device connecting plate 37 to drive the guide rail support 35 to slide in the rectangular guide rail groove of the base 01 to tighten the cable sample.

Preferably, as shown in FIGS. 13-17 , the axial cutting device 05 includes a limiting mechanism 62 and a cutting mechanism 63 . Wherein, the cutting mechanism 63 is used to cut into the insulation layer of the cable sample in the radial direction, and move in the axial direction under the action of the feeding movement of the corresponding axial feeding mechanism (such as the longitudinal feeding device 02) to cut the insulation layer cut. The limit mechanism 62 is used to provide the cable sample with a Radial support to prevent deformation or displacement of cable samples.

That is to say, the cable insulation layer axial cutting device of the present invention can cut into the insulation layer of the cable sample in the radial direction conveniently, then the insulation layer is cut along the axial direction, and in the whole cutting process, all can cut the cable sample. Effective radial support should be carried out in order to prevent the cable sample from being deformed or displaced due to the force during cutting, resulting in incomplete cutting (such as not cutting through) and other problems.

Preferably, the limiting mechanism 62 and the cutting mechanism 63 are respectively arranged on both sides of the cable sample, for example, they are respectively arranged on both sides of the axis of the cable sample in the horizontal direction.

Preferably, as shown in FIGS. 13-15, the cutting mechanism 63 includes an axial cutting blade 56 and an axial blade support 57, and the axial cutting blade 56 is mounted on the axial blade support 57, so that the The tip of the axial cutting blade 56 faces the axis of the cable sample, and the axial cutting blade 56 is in a horizontal plane. When the cutting mechanism 63 is fed towards the cable sample, the tip of the axial cutting blade 56 can penetrate the insulation layer. After this, when the cutting mechanism 63 is fed along the axial direction of the cable sample, The cutting edge and tip of the axial cutting blade 56 will cut the insulating layer to a certain length.

Preferably, as shown in Figures 13-16, the limit mechanism 62 includes a V-shaped roller 54, and the generatrix of the outer peripheral surface of the V-shaped roller 54 is V-shaped, so that it can reliably abut and support the cable test. The outer surface of the cable sample can prevent deformation and displacement of the cable sample along the height direction and horizontal direction. Particularly, the V-shaped surface roller 54 and the cutting blade 56 respectively contact the cable sample on both sides of the cable sample, and when the axial cutting device 05 moves along the axial direction of the cable sample, the cutting blade 56 will cut the cable sample The insulation layer is cut, and the V-shaped surface roller 54 is supported in a rolling manner, so that the cutting process is smooth.

Preferably, the axial cutting device 05 further includes a left and right screw nut mechanism 64, which is used to drive the limiting mechanism 62 and the cutting mechanism 63 to move synchronously relative to each other, such as moving toward each other or moving away from each other, so that The axial cutting device 05 of the present invention can adapt to the axial cutting of various cable samples with different diameters, while greatly improving the cutting efficiency.

Preferably, the limiting mechanism 62 and the cutting mechanism 63 are respectively arranged on both sides of the cable sample. When the left and right screw nut mechanism 64 works, the limiting mechanism 62 and the cutting mechanism The mechanism 63 can move towards the cable sample synchronously and can simultaneously contact the outer surface of the insulation layer of the cable sample, thus providing reliable support for the cable sample from the beginning of the cutting process.

Alternatively, the limiting mechanism 62 and the cutting mechanism 63 can also be fed independently in the radial direction. For example, after the cable sample is clamped, the limiting mechanism 62 is first driven to feed in the radial direction so that the cable sample is clamped. support, and then drive the cutting mechanism 63 to advance radially so as to cut into the insulating layer.

Preferably, as shown in FIG. 14 , the left and right screw nut mechanism 64 includes a second left and right screw screw 61 and a pair of axial screw nuts 60 with opposite rotation directions, and the axial screw nuts 60 are respectively connected to the The left-handed thread part of the second left-handed screw 61 cooperates with the right-handed thread part. The limiting mechanism 62 and the cutting mechanism 63 are respectively fixed to one of the axial screw nuts 60 . Thus, when the second left-right screw 61 rotates, the two axial screw nuts 60 will move toward each other or move away from each other, thereby driving the limiting mechanism 62 and the cutting mechanism 63 to move toward or away from each other synchronously. Move away from the cable specimen to complete the supported cutting action or retraction action.

Specifically, as shown in FIG. 14 , the axial lead screw nut 60 on one side of the cutting mechanism 63 is connected to the blade support connecting plate 58 through an axial nut seat 59, and the axial blade support 57 is fixedly installed on the blade support connecting plate. 58 on. The axial lead screw nut 60 on one side of the limit mechanism 62 is also connected to a similar limit bracket connecting plate (not marked in the figure) through a similar axial nut seat, and the limit mechanism 63 is fixedly installed on the limit bracket connection plate.

Preferably, as shown in FIG. 14 and FIG. 17 , the limiting mechanism 62 further includes: a limiting bracket 50 , a telescopic rod 51 , a spring 48 , a limiting end cap 49 and a limiting column 55 . Wherein, the limiting bracket 50 is installed on the connecting plate of the limiting bracket and then fixed with the axial screw nut 60; the limiting bracket 50 is provided with a through hole, and the first telescopic rod 51 One end is slidably installed in the through hole; the limit end cap 49 is fixedly installed at the first port of the through hole (that is, the port away from the V-shaped roller 54), and the spring 48 Sleeved on the first end of the telescopic rod 51 and accommodated in the through hole, one end of the spring 48 abuts against the limit end cap 49 and the other end abuts against the telescopic rod 51 shoulder and is in compression. In the installed state, the telescopic rod 51 can be axially displaced, thereby compressing the spring 48 and allowing the first end of the telescopic rod 51 to partially protrude from the first port of the through hole. The limiting column 55 is fixedly installed on the second end of the telescopic rod 51, and the axes of the two are perpendicular to each other. The V-shaped roller 54 is rotatably installed on the upper end of the limiting column 55, for example, by means of deep The groove ball bearing 52 and the bearing retaining ring 53 are installed so that the axis of the V-shaped roller 54 is fixed relative to the telescopic rod 51 .

When the cutting mechanism 63 cuts into the insulation layer of the cable sample, with the rotation of the second left and right screw 61, the limit mechanism 62 and the cutting mechanism 63 move towards the cable sample synchronously , when the tip of the axial cutting blade 56 touches the outer surface of the insulating layer of the cable sample, the V-shaped roller 52 of the limit mechanism 62 just abuts against the outer surface of the insulating layer of the cable sample, Thus, support can be provided in time for the cutting process. Along with the continuation of rotation of the second left-right screw 61, the tip of the axial cutting blade 56 begins to cut into the insulating layer, and at the same time, since the supporting force of the V-shaped roller 52 becomes larger thereupon, the The spring 48 is compressed via the telescopic rod 51, so that the telescopic rod 51 is displaced backward (ie, toward the first end), so that the V-shaped roller 52 also retreats, that is, at Retreat in the direction of the radial support to compensate the cutting depth of the axial cutting blade 56, effectively avoiding the axial displacement or deformation of the cable sample.

In an unshown embodiment, for the rotational drive of the second left-right screw 61 , a handwheel may be used to directly drive it.

However, preferably, as shown in FIGS. 14-15 , the axial cutting device 05 further includes an axial cutting motor 42 , the motor shaft of which is connected to the second left and right screw screws 61 through an axial coupling 43 , Thus, the second left and right screw 61 can be driven and rotated automatically.

As shown in Figure 14, the two ends of the second left and right screw 61 are supported by the support base 46, the support base 46 is provided with a bearing hole, and a bearing (preferably an angular contact ball bearing 47 ) and a sleeve 44, the sleeve 44 is used to position the bearing, and the outer end of the bearing hole is provided with an end cover 45, which is used to fix the sleeve 44, so as to realize the fixing and Preload.

As shown in Figures 14-15, the axial cutting device 05 also includes an axial cutting guide rail 65, which is provided with two, respectively, arranged on both sides of the second left and right screw screw 61, and the shaft The guide rail slider matched with the cutting guide rail 65 is installed on the limit bracket connecting plate and the blade support connecting plate 58 , thereby providing smooth motion guidance for the limit mechanism 62 and the cutting mechanism 63 .

The axial cutting guide rail 65 and the support seat 46 can be fixedly installed on a support plate, so that the axial cutting device 05 forms an independent unit, and then installed on the longitudinal feeding device 02 . Or alternatively, the axial cutting guide rail 65 and the support seat 46 can also be directly fixed to the longitudinal feeding device 02 .

Preferably, the axial cutting device 05 may also include a radial depth-of-cut control mechanism for monitoring the cutting resistance during radial cutting, and controlling the axial cutting motor 42 to stop when the cutting resistance exceeds a predetermined value Work. For example, the radial depth-of-cut control mechanism may include a force sensor disposed eg on the axial blade holder 57 for detecting the penetration resistance. Because the cable insulation layer and the cable core are made of different materials, the resistance of the axial cutting blade 56 when cutting into these two materials will have a large difference. the predetermined value. That is to say, when the axial cutting blade 56 cuts through the insulating layer and contacts the cable core, the cutting resistance will obviously increase, and the force sensor detects this change of the cutting resistance, and the shaft can be stopped in time. To the cutting motor 42, thereby ensuring that the radial depth of cut is suitable.

The longitudinal feeding device 02 is used to drive the axial cutting device 05 and the radial cutting device 04 relative to the base along the axial direction of the cable sample (that is, the longitudinal direction of the cable insulation layer stripping equipment) 01 moves to complete the cutting work of the insulation layer at the desired position and length.

Preferably, as shown in Figures 18-19, the longitudinal feed device 02 includes: a longitudinal feed motor 66, a longitudinal coupling 67, a lock nut 68, a longitudinal end cover 69, a sleeve 70, a longitudinal feed support Seat 71, angular contact ball bearing 72, total slide plate 73, longitudinal guide rail 74, longitudinal nut seat 75, longitudinal feed nut 76 and longitudinal feed screw 77.

Wherein, the longitudinal feed motor 66 is installed on the base 01 , and its output shaft is connected with the longitudinal feed screw 77 through the longitudinal coupling 67 .

There are two longitudinal feed supports 71 installed on the base 01 to support the longitudinal feed screw 77 from both ends. Wherein, the longitudinal feed screw 77 is installed on the longitudinal feed support 71 through the angular contact ball bearing 72 , the sleeve 70 , the end cover 69 and the lock nut 68 .

There are two longitudinal guide rails 74 installed on the base 01 and distributed on both sides of the longitudinal feed screw 77 .

The total slide plate 73 is connected together with the longitudinal feed nut 76 through a longitudinal nut seat 75, and the longitudinal feed nut 76 is screwed with the longitudinal feed screw 77, and the two ends of the total slide plate 73 A guide rail slider (not shown) is arranged on the side, and the guide rail slider is slidingly matched with the longitudinal feed guide rail 74 , and the overall slide plate 73 is, for example, equipped with an axial cutting device 05 and a radial cutting device 04 . Thus, when the longitudinal feed screw 77 rotates, the longitudinal feed nut 76 converts the rotary motion of the longitudinal feed screw 77 into linear motion, so that the total slide plate 73 is fed along the longitudinal direction. The guide rail 74 slides, thereby driving the components installed on the main slide plate 73 (such as the axial cutting device 05 and the radial cutting device 04) to move along the longitudinal direction of the cable insulation stripping equipment (that is, the axial direction of the cable sample), In order to realize the cutting of the insulation layer of the cable sample.

In summary, the cable insulation stripping device of the present invention can easily peel cable samples of different diameters, and its applicable cable diameter range is, for example, between 15-100 mm, and it does not need to be cut up and down when cutting cables of different diameters. Adjusting the blade of the cutting device can always ensure the centering and clamping, which improves the accuracy and efficiency of cable stripping. On the one hand, it ensures the quality of the cable core after stripping without affecting the detection performance of the cable. On the other hand, it also saves Lots of human resources.

Further, since the clamping device includes a safety clutch device, when the clamping device clamps the cable sample, the safety clutch device starts to work, so that the clamping device no longer applies clamping force to the cable sample, thereby ensuring that the cable The sample will not be damaged by clamping, and it is also beneficial to protect the clamping motor from being burned due to stalling.

In particular, the cable insulation layer stripping equipment of the present invention adopts the scheme of cutting one side of the cable sample and the limit support on the other side to cut the cable insulation layer. The blade on the cutting side cuts into the cable insulation layer, and the telescopic rod on the limit side compresses the spring. , so that the V-shaped surface roller is always close to the insulation layer of the cable sample, ensuring the cutting quality of the cable.

Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

It should be understood that the above-mentioned implementations are only exemplary rather than limiting, and those skilled in the art can make various obvious or equivalent solutions to the above-mentioned details without departing from the basic principles of the present invention. Any modification or replacement will be included in the scope of the claims of the present invention.

Claims (10)

1. A cable insulation layer radial cutting device is used to cut the insulation layer of the cable sample radially, it is characterized in that, comprising a radial cutting drive mechanism and a pair of radial cutting blades, each radial cutting The edge shape of the blade is a concave arc shape, wherein, the blades of a pair of radial cutting blades are opposite to each other, and can move toward each other under the drive of the radial cutting drive mechanism, so that the two sides of the cable sample are simultaneously cut The insulation is cut radially. 2. The radial cutting device for cable insulation layer according to claim 1, characterized in that, the radial cutting device comprises a left and right screw and a pair of radial screw nuts with opposite directions of rotation, the radial screw nut The rod nuts are respectively matched with the left-handed thread part and the right-handed thread part of the left-handed screw and a pair of radial cutting blades are respectively fixed to one of the radial screw nuts. 3. The radial cutting device for cable insulation layer according to claim 2, characterized in that, the radial cutting device further comprises a pair of radial nut seats, a pair of radial blade holders and a pair of radial blade holders connected Each radial cutting blade is fixedly mounted on one of the radial blade holders, each radial blade holder is fixed on one of the radial blade holder connecting plates, and each radial blade holder connecting plate passes through one of the radial blade holder connecting plates. The nut seat is connected with the corresponding radial lead screw nut, so as to realize the connection between the radial cutting blade and the radial lead screw nut. 4. The radial cutting device for cable insulation according to claim 3, wherein the radial blade holder is L-shaped and includes long sides and short sides perpendicular to each other, wherein the long side is fixed to the The radial blade holder connecting plate, the radial cutting blade is fixed on the short side. 5. The radial cutting device for cable insulation layer according to claim 4, characterized in that, each radial cutting blade is a plate-like structure with a rake face and a flank face to form the blade, in the assembled state Next, the rake faces of the two radial cutting blades are coplanar, preferably in the same vertical plane, and the flank faces of the two radial cutting blades are respectively located on both sides of the two rake faces that are coplanar. 6. The cable insulation layer radial cutting device according to claim 5, wherein a blade backing plate is arranged between one of the radial cutting blades and the corresponding radial blade holder, and the thickness of the blade backing plate is the same as The radial cutting blades have the same thickness. 7. The radial cutting device for cable insulation layer according to any one of claims 2-6, characterized in that, the radial cutting device also includes a radial cutting bracket, and the two ends of the left and right screw are supported on the On the radial cutting bracket, wherein, the longitudinal section of the radial cutting bracket is E-shaped, including a top support plate, a middle support plate and a bottom support plate, wherein the left and right screw screws pass through the middle support plate and The bottom support plate is supported and the radial cutting drive mechanism is mounted on the top support plate. 8. The radial cutting device for cable insulation layer according to any one of claims 1-7, characterized in that it also includes a cutting depth control mechanism for monitoring the cutting resistance during radial cutting, and when the cutting resistance exceeds When the predetermined value is reached, the radial cutting drive mechanism is controlled to stop working. 9 . The radial cutting device for cable insulation layer according to claim 8 , wherein the cutting depth control mechanism comprises a force sensor arranged on the radial blade holder. 10 . 10. A cable insulation layer stripping device, used for peeling off at least a part of the insulation layer of a cable sample, characterized in that it comprises the cable insulation layer radial cutting device according to any one of claims 1-9.