Sample preparation device for cable insulation shielding stripping

Abstract

The invention discloses a sample preparation device for cable insulation shielding stripping. The sample preparation device comprises a sample preparation table, a cable sample section clamp and a cutting mechanism, the cable sample section clamp is arranged on the sample preparation table and is used for clamping a cable sample section; the cutting mechanism is used for axially cutting an insulation shielding layer of the cable sample section; the cable sample section clamp comprises a clamping driving assembly and a pair of chucks; the clamping driving assembly is used for driving the pair of chucks to get away from or get close to each other; the length direction of the chuck is parallel to the axial direction of the cable sample section, and the length of the chuck is greater than that of the cable sample section; v-shaped grooves are formed in the end faces, close to each other, of the pair of chucks respectively. The cable sample section is clamped in the V-shaped grooves of the pair of chucks, and meanwhile, the length of the chucks is larger than that of the cable sample section, so that the whole cable sample section is pressed to be straight under the extrusion of the four side walls of the V-shaped grooves of the pair of chucks, axial tool marks can be drawn on the whole insulation shielding layer of the cable sample section, and the insulation shielding layer of the cable sample section can be cut off. And the direction accuracy of subsequent cutting is improved.

Description

Technical Field

[0001] The invention relates to the field of cable insulation shielding stripping sample preparation device, in particular to a cable insulation shielding stripping sample preparation device. Background Art

[0002] With the expansion of the scale of the power construction industry, the demand for power cable testing has increased. According to the sample preparation requirements of the relevant clauses of the national standard GB / T 12706.2 for the power industry, the strippability test of the insulation shield is a must-do item for the random inspection of semi-conductive layer strippable cable materials of Class A. The traditional cable insulation shielding layer sample preparation is to clamp the cable with tools such as flat-nose pliers, and then perform the marking and cutting manually; due to the natural curvature of the cable sample itself, the use of flat-nose pliers cannot achieve the standard requirement of cutting the insulation shielding surface of each sample from one end to the other into two parallel knife marks with a width of (10±1) mm. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a sample preparation device for cable insulation shielding stripping, which has the advantage of straightening the cable sample section to the maximum extent, thereby facilitating cutting out two knife marks that meet the standards.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A sample preparation device for cable insulation shielding stripping, comprising a sample preparation table, a cable sample section clamp and a cutting mechanism; the cable sample section clamp is arranged on the sample preparation table and is used to clamp the cable sample section; the cutting mechanism is used to axially cut the insulation shielding layer of the cable sample section; the cable sample section clamp comprises a clamping drive assembly and a pair of chucks; the clamping drive assembly is used to drive the pair of chucks to move away from or towards each other; the length direction of the chuck is parallel to the axial direction of the cable sample section and the length of the chuck is greater than the length of the cable sample section; V-shaped grooves are respectively formed on the end faces of a pair of chucks that are close to each other.

[0006] By adopting the above technical solution, the cable sample section is clamped in the V-groove of a pair of chucks, and at the same time, the length of the chuck is greater than the length of the cable sample section. In this way, under the squeezing of the four side walls of the V-groove of the pair of chucks, the entire cable sample section will be straightened, which is conducive to drawing axial knife marks on the entire insulating shielding layer of the cable sample section, thereby improving the directional accuracy of subsequent cutting; in addition, the V-groove enables a pair of chucks to clamp cables of different diameters.

[0007] Optionally, a buffer layer is provided at one end of a pair of chucks that are close to each other.

[0008] By adopting the above technical solution, the presence of the buffer layer reduces the possibility of the cable being deformed by clamping.

[0009] Optionally, the clamping drive assembly includes a first servo motor and a forward and reverse threaded screw; the first servo motor drives the forward and reverse threaded screw to rotate so as to drive a pair of the chucks to move away from or approach each other; a pressure sensor is provided at one end of the pair of chucks that are close to each other; the pressure sensor is used to control the first servo motor to stop working.

[0010] By adopting the above technical solution, when a pair of clamps approach each other, the cable will apply pressure to the pressure sensor. When the pressure reaches the set value, the pressure sensor controls the first servo motor to stop working, so that adaptive clamping of the cable can be achieved to prevent the cable from being squeezed and deformed.

[0011] Optionally, the cutting mechanism includes a cutting frame, a tool seat arranged on the cutting frame, and a cutting tool arranged on the tool seat; the cutting frame is arranged on the sample preparation table along the axial sliding of the cable sample segment; the tool seat includes a lifting slide, a tool bracket vertically slidably arranged on the lifting slide, and a lifting drive component for driving the tool bracket; the cutting tool is arranged on the tool bracket.

[0012] By adopting the above technical solution, the cable sample is clamped between a pair of chucks, and then the lifting drive component drives the tool bracket to descend so that the cutting tool abuts against and is inserted into the insulating shielding layer at one end of the cable sample, and then the cutting frame slides along the axial direction of the cable sample to complete the longitudinal knife mark of the entire cable sample; compared with manual cutting, this has accurate cutting direction and high efficiency, and at the same time, the upper and lower positions of the cutting tool are adjustable to adapt to cables of different diameters.

[0013] Optionally, the cutting tool has a pair of parallel cutting blades for simultaneously cutting two cuts parallel to the cable sample segment.

[0014] By adopting the above technical solution, the cutting tool has a pair of cutting blades, so the required two knife marks can be completed by cutting in sequence, thereby improving the cutting efficiency.

[0015] Optionally, the tool seat is horizontally slidably arranged on the cutting frame and the sliding direction is perpendicular to the axial direction of the cable sample segment; the cutting mechanism also includes a lateral adjustment component; the lateral adjustment component is used to drive the tool seat to slide horizontally.

[0016] By adopting the above technical solution, the lateral adjustment component is used to horizontally adjust the position of the tool seat in the axial vertical direction of the cable sample segment, thereby ensuring that the tool seat is located directly above the central axis of the cable sample segment during cutting, thereby reducing the situation where the cutting marks do not meet the requirements due to the eccentricity of the tool seat during cutting.

[0017] Optionally, the lateral adjustment assembly includes a second servo motor and a lateral adjustment screw; the second servo motor drives the lateral adjustment screw to rotate, thereby driving the tool seat.

[0018] By adopting the above technical solution, the servo motor has good controllability, thereby improving the control accuracy of the tool seat.

[0019] Optionally, the cutting mechanism further includes a cutting drive assembly; the cutting drive assembly is used to drive the cutting frame.

[0020] By adopting the above technical solution, the cutting drive assembly drives the cutting frame to move, and there is no need to manually push the cutting frame for cutting, which saves time and effort.

[0021] Optionally, the cutting drive assembly includes a third servo motor and a cutting drive lead screw; the third servo motor drives the cutting drive lead screw to rotate so as to drive the cutting frame.

[0022] By adopting the above technical solution, the servo motor has good controllability, thereby improving the control accuracy of the cutting frame.

[0023] Optionally, the cutting frame is a cantilever structure.

[0024] By adopting the above technical solution, the cutting frame is a cantilever structure, that is, the cutting frame is composed of a column and a cantilever, so that there is no obstacle on one side of the cutting frame, which is conducive to observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the cable sample segment fixture and the cable sample segment of the present invention.

[0027] Figure 3 It is a schematic structural diagram of the cross section of the cutting frame of the present invention.

[0028] Figure 4 It is a structural schematic diagram of a tool holder and a cutting tool of the present invention.

[0029] Figure 5 It is a schematic structural diagram of the cross section of the tool holder and the cutting tool of the present invention.

[0030] Description of reference numerals:

[0031] 10. Sample preparation table;

[0032] 20. Cable sample clamp; 21. Clamp seat; 22. Positive and negative threaded screw rod; 23. Clamping connection seat; 231. Clamping sliding block; 24. Clamp;

[0033] 30. Cutting mechanism; 31. Cutting frame; 32. Transverse adjustment assembly; 321. Transverse adjustment screw rod; 322. Transverse hand wheel; 33. Tool holder; 331. Lifting slide; 332. Transverse adjustment plate; 333. Tool holder; 334. Lifting hand wheel; 335. Lifting drive screw rod; 336. Vertical sliding block; 34. Cutting tool; 341. Cutting tool body;

[0034] 40. Cable sample section. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 The present invention is described in further detail.

[0036] Embodiment 1: A sample preparation device for stripping cable insulation shielding is disclosed, referring to Figure 1 , including a sample preparation table 10, a cable sample clamp 20 and a cutting mechanism 30; the cable sample clamp 20 and the cutting mechanism 30 are arranged on the sample preparation table 10; the cable sample clamp 20 is used to clamp the cable sample 40; the cable sample clamp 20 keeps the cable sample 40 in a horizontal state and exposes the upper end of the cable sample 40; the cutting mechanism 30 is used to axially cut the insulation shielding layer of the cable sample 40 and cut two knife marks on the insulation shielding layer, so as to facilitate the subsequent pulling of the insulation shielding layer between the two knife marks to perform a strippability test of the insulation shielding.

[0037] refer to Figure 2 The cable sample section clamp 20 includes a clamp seat 21, a pair of clamps 24 and a clamping drive assembly; the pair of clamps 24 are slidably arranged on the clamp seat 21; the clamping drive assembly is used to drive the pair of clamps 24 to move away from or close to each other.

[0038] refer to Figure 2 A clamping groove is formed on the clamp seat 21; a pair of clamping sliding blocks 231 are slidably arranged in the clamping groove; a clamping connecting seat 23 is fixed on the clamping sliding block 231; a pair of clamps 24 are respectively fixed on the end faces of a pair of clamping connecting seats 23 close to each other.

[0039] refer to Figure 2The clamping drive assembly includes a first servo motor (not shown) and a forward and reverse threaded screw 22; the forward and reverse threaded screw 22 is a screw having external thread segments with opposite rotation directions formed at both ends; one end of the forward and reverse threaded screw 22 is coaxially fixed to the output shaft of the first servo motor (not shown); a pair of clamping slide blocks 231 are respectively screwed with different external thread portions of the forward and reverse threaded screw 22; when the first servo motor (not shown) drives the forward and reverse threaded screw 22 to rotate, the pair of clamping slide blocks 231 are close to or close to each other along the clamping slide groove of the clamp seat 21. In order to avoid the situation where the forward and reverse threaded screw 22 cannot be driven when the first servo motor (not shown) fails, the end of the forward and reverse threaded screw 22 away from the first servo motor (not shown) is formed into a regular hexagonal column, which is convenient for the subsequent rotation of the forward and reverse threaded screw 22 with the help of a wrench.

[0040] In order to ensure that the cable sample 40 is in a straight state, a pair of chucks 24 are arranged horizontally in the length direction and V-shaped grooves are formed on the end faces close to each other along the length direction; the length of the chuck 24 is greater than the length of the cable sample 40, so that when clamped, the cable sample 40 is completely located in the pair of V-shaped grooves, and the four side walls of the pair of V-shaped grooves press the cable sample 40 so that the cable sample 40 is in a straight state. In order to reduce the possibility of deformation of the cable sample 40 during clamping, a buffer layer can be provided on the wall surface of the pair of V-shaped grooves. In other embodiments, pressure sensors are installed and distributed on the side walls of the pair of V-shaped grooves. The pressure sensors are used to control the first servo motor (not shown) of the clamping drive assembly. In the process of the pair of chucks 24 clamping the cable sample 40, when the pressure on the pressure cable sample 40 exceeds the set value, the pressure sensor will control the first servo motor (not shown) of the clamping drive assembly to stop working, thereby avoiding the cable sample 40 from being clamped and deformed.

[0041] refer to Figure 1 The cutting mechanism 30 includes a cutting frame 31, a tool seat 33 and a cutting tool 34 arranged on the tool seat 33; the cutting frame 31 is gantry-shaped; the tool seat 33 is connected to the horizontal part of the cutting frame 31; the cutting frame 31 is arranged on the sample preparation table 10 along the axial sliding of the cable sample segment 40.

[0042] refer to Figure 1 and Figure 3 A pair of vertical portions of the cutting frame 31 have sliding connection grooves formed at their lower ends adjacent to each other; the two side edges of the sample preparation table 10 are respectively slidably arranged in a pair of sliding connection grooves of the cutting frame 31, so that the cutting frame 31 can be driven to move on the sample preparation table 10 by applying force in a direction parallel to the cable sample segment 40, and the moving direction is parallel to the cable sample segment 40.

[0043] refer to Figure 4 and Figure 5The tool seat 33 includes a lifting slide 331, a tool holder 333 vertically slidably arranged on the lifting slide 331, and a lifting drive component for driving the tool holder 333; the cutting tool 34 is arranged on the tool holder 333; the lifting slide 331 is connected to the horizontal part of the cutting frame 31; the tool holder 333 is L-shaped and a vertical sliding block 336 is formed on its vertical part; a vertical sliding groove for vertical sliding block 336 to slide vertically is formed on the lifting slide 331; the lifting drive component includes a lifting drive screw 335 rotatably connected to the lifting slide 331 and a lifting hand wheel 334 fixed on the upper end of the lifting drive screw 335; the lifting drive screw 335 vertically passes through the vertical sliding groove and the vertical sliding block 336 is vertically screwed on the lifting drive screw 335. In this way, by rotating the lifting hand wheel 334, the lifting drive screw 335 can be driven to rotate, thereby driving the vertical sliding block 336 to move vertically along the vertical sliding groove, that is, the tool bracket 333 and the cutting tool 34 are vertically lifted and lowered, so that the blade of the cutting tool 34 is inserted into the insulating shielding layer at one end of the cable sample section 40.

[0044] refer to Figure 4 and Figure 5 A pair of parallel cutting blades 341 are formed at the bottom of the cutting tool 34; the pair of cutting blades 341 are horizontally distributed and the distribution direction is perpendicular to the sliding direction of the cutting frame 31, so that the cutting tool 34 can cut two knife marks parallel to the cable sample segment 40 on the insulating shielding layer of the cable sample segment 40 as the cutting frame 31 slides.

[0045] Embodiment 2: The difference between Embodiment 2 and Embodiment 1 is: Figure 1 and Figure 3 The tool seat 33 can be adjusted horizontally along the horizontal part of the cutting frame 31; a transverse adjustment plate 332 is formed on the lifting slide 331; a transverse sliding groove for the horizontal movement of the transverse adjustment plate 332 is formed on the horizontal part of the tool seat 33; a transverse adjustment assembly 32 is arranged on the tool seat 33; the transverse adjustment assembly 32 includes a transverse adjustment screw rod 321 rotatably connected to the horizontal part of the cutting frame 31; the transverse adjustment screw rod 321 horizontally passes through the transverse sliding groove and is screwed with the transverse adjustment plate 332; a transverse hand wheel 322 is fixed to the outer end of the transverse adjustment screw rod 321. In this way, the transverse adjustment screw rod 321 can be driven to rotate by the transverse hand wheel 322, thereby driving the transverse adjustment plate 332 to move horizontally along the transverse sliding groove, that is, the tool seat 33 moves horizontally, so that when cutting, the cutting tool 34 can be located directly above the cable sample section 40.

[0046] In addition, in order to facilitate better observation of the cutting status during the cutting process, the cutting frame 31 can be transformed into a cantilever state, that is, the cutting frame 31 consists of a column and a cantilever, so that the cutting status can be observed on the side without the column. At the same time, the control panel of the entire device can be set on the end face of the side of the sample preparation table 10 without the column, so that the cutting status can be observed during the operation.

[0047] In other embodiments, a pair of linear guide rails are provided between the lifting slide 331 and the horizontal portion of the cutting frame 31, and the lateral adjustment screw rod 321 is driven by a second servo motor (not shown), so that the lateral position control of the lifting slide 331 is more accurate.

[0048] Embodiment 3: The difference between Embodiment 3 and Embodiment 1 is: Figure 1 A pair of linear guide rails are arranged between the pair of vertical parts of the cutting frame 31, and the cutting mechanism 30 also includes a cutting drive assembly; the cutting drive assembly is used to drive the cutting frame 31; the cutting drive assembly includes a third servo motor (not shown) and a cutting drive screw (not shown); the cutting drive assembly can be two groups; the pair of vertical parts of the cutting frame 31 are respectively threadedly connected with the cutting drive screws (not shown) of the two groups of cutting drive assemblies, and a pair of third servo motors (not shown) respectively drive a pair of cutting drive screws (not shown) to rotate, thereby driving the cutting frame 31 to move horizontally. In this way, there is no need to manually push the cutting frame 31, which saves time and effort, and the moving position of the cutting frame 31 is more accurate.

[0049] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sample preparation device for cable insulation shielding stripping, comprising a sample preparation platform (10), a cable sample section clamp (20) and a cutting mechanism (30); the cable sample section clamp (20) is arranged on the sample preparation platform (10) and is used to clamp the cable sample section (40); the cutting mechanism (30) is used to axially cut the insulation shielding layer of the cable sample section (40); characterized in that: The cable sample clamp (20) comprises a clamping drive assembly and a pair of clamps (24); the clamping drive assembly is used to drive the pair of clamps (24) to move away from or towards each other; the length direction of the clamps (24) is parallel to the axial direction of the cable sample (40) and the length of the clamps (24) is greater than the length of the cable sample (40); V-shaped grooves are respectively formed on the end surfaces of the pair of clamps (24) that are close to each other.

2. A sample preparation device for cable insulation shield stripping according to claim 1, characterized in that: A buffer layer is provided at one end of the pair of clamps (24) close to each other.

3. A sample preparation device for cable insulation shield stripping according to claim 1, characterized in that: The clamping drive assembly comprises a first servo motor and a forward and reverse threaded screw (22); the first servo motor drives the forward and reverse threaded screw (22) to rotate, thereby driving a pair of chucks (24) to move away from or closer to each other; a pressure sensor is provided at one end of the pair of chucks (24) that are close to each other; the pressure sensor is used to control the first servo motor to stop working.

4. A sample preparation device for cable insulation shield stripping according to claim 1, characterized in that: The cutting mechanism (30) comprises a cutting frame (31), a tool seat (33) arranged on the cutting frame (31), and a cutting tool (34) arranged on the tool seat (33); the cutting frame (31) is arranged on the sample preparation table (10) along the axial sliding of the cable sample section (40); the tool seat (33) comprises a lifting slide (331), a tool support (333) vertically slidably arranged on the lifting slide (331), and a lifting driving component for driving the tool support (333); the cutting tool (34) is arranged on the tool support (333).

5. A sample preparation device for cable insulation shield stripping according to claim 4, characterized in that: The cutting tool (34) has a pair of parallel cutting blades (341) for simultaneously cutting two knife marks parallel to the cable sample section (40).

6. A sample preparation device for cable insulation shield stripping according to claim 4, characterized in that: The tool seat (33) is horizontally slidably arranged on the cutting frame (31) and the sliding direction is perpendicular to the axial direction of the cable sample section (40); the cutting mechanism (30) further comprises a lateral adjustment component (32); the lateral adjustment component (32) is used to drive the tool seat (33) to slide horizontally.

7. A sample preparation device for cable insulation shield stripping according to claim 6, characterized in that: The lateral adjustment component (32) comprises a second servo motor and a lateral adjustment screw rod (321); the second servo motor drives the lateral adjustment screw rod (321) to rotate, thereby driving the tool seat (33).

8. A sample preparation device for cable insulation shield stripping according to claim 4, characterized in that: The cutting mechanism (30) further comprises a cutting drive assembly; the cutting drive assembly is used to drive the cutting frame (31).

9. A sample preparation device for cable insulation shield stripping according to claim 8, characterized in that: The cutting drive assembly comprises a third servo motor and a cutting drive screw; the third servo motor drives the cutting drive screw to rotate, thereby driving the cutting frame (31).

10. A sample preparation device for cable insulation shield stripping according to claim 4, characterized in that: The cutting frame (31) is a cantilever structure.

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