A wire stripper blade adjustment mechanism

Abstract

This invention provides a blade adjustment mechanism for a wire stripper, comprising a mounting frame, a stripping blade, and an adjustment assembly. The mounting frame includes a blade positioning part, a blade adjustment part, and a blade reset part. The blade positioning part is movably connected to the stripping blade via a positioning pin. The adjustment assembly includes an adjustment rod, a guide block, and a self-locking block. When the adjustment rod rotates, the guide block applies an axial thrust to the adjustment rod. The self-locking block engages with several locking grooves arranged circumferentially on the outer wall of the adjustment rod. The blade reset part is equipped with a reset spring, which abuts against the stripping blade from opposite sides. This invention has several cutting positions corresponding to the number of locking grooves. The cutting depth corresponding to each cutting position is a known fixed value. During actual construction, the adjustment rod can be rotated to the corresponding position according to the specific specifications of the wire, eliminating complex manual adjustment steps, resulting in high efficiency and less risk of damaging the core wire.

Description

Technical Field

[0001] This utility model relates to the field of wire stripper technology, and more specifically to a blade adjustment mechanism for a wire stripper. Background Technology

[0002] Most overhead power distribution lines in power systems use cross-linked polyethylene (XLPE) insulated conductors to improve the insulation level of the distribution lines. During the work on distribution lines, it is often necessary to strip the insulation from the conductors before wiring operations. Workers typically use insulation stripping devices to remove the outer insulation of the conductors.

[0003] Existing handheld wire strippers typically have a screw for adjusting the blade depth. For example, patent application CN201910170455.0 discloses an overhead insulated wire stripper whose blade assembly includes a left blade holder, a right blade holder, a blade, and a blade holder. Both the left and right mounting bases have locking buttons. The left and right blade holders are respectively mounted on the left and right mounting bases via these buttons. A wire clamping hole adapted to the outer diameter of the overhead insulated wire is formed between the left and right blade holders. The blade holder is fixedly mounted on one of the mounting bases, and the blade is fixedly mounted on the blade holder. The blade holder has an adjusting bolt. In this technical solution, the blade depth adjustment relies on manual judgment. Operators need to adjust the adjustment mechanism multiple times during the rotational stripping process to achieve a smooth stripping effect, resulting in low construction efficiency and a high risk of damaging the wire core.

[0004] The patent document with application number CN201811243680.4 discloses an insulated wire stripper for overhead power lines. It is equipped with an optical fiber probe for detecting metal wires. The optical fiber probe can assist in adjusting the depth of the blade to avoid damaging the wire core. However, the device requires an optical fiber probe, a linear stepper motor and corresponding auxiliary mechanisms. The overall structure is complex and not conducive to convenient construction. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a blade adjustment mechanism for a wire stripper. This mechanism allows for precise adjustment of the blade depth, resulting in high construction efficiency and accuracy. Furthermore, it is simple to operate and does not rely on electronic equipment.

[0006] A wire stripper's blade adjustment mechanism includes a mounting frame, a stripping blade, and an adjustment assembly. The mounting frame includes a blade positioning part, a blade adjustment part, and a blade reset part.

[0007] The tool adjustment part has an adjustment hole. The adjustment assembly includes an adjustment rod, a guide block, and a self-locking block. The adjustment rod is movably inserted into the adjustment hole and slides in cooperation with the inner wall of the adjustment hole. The outer wall of the adjustment rod is provided with a spirally extending guide groove and a plurality of circumferentially spaced locking grooves. The guide block protrudes from the inner wall of the adjustment hole and slides in cooperation with the guide groove. The self-locking block includes an elastic pressing member and a movable end connected to the elastic pressing member. The movable end can protrude or retract relative to the inner wall of the adjustment hole. The movable end can engage with any of the locking grooves.

[0008] The tool reset part is provided with a reset spring that corresponds to the position of the adjustment hole in the axial direction, and a gap is left between the reset spring and the adjustment hole;

[0009] The tool positioning part is provided with a positioning pin, the axis of the positioning pin is perpendicular to the axis of the adjustment hole, the middle part of the peeling tool is provided with a tool positioning hole that is movably engaged with the positioning pin, the two ends of the peeling tool respectively form a cutting part and a transmission part, the transmission part extends between the return spring and the adjustment hole, and the return spring and the adjustment rod abut against the transmission part from opposite sides.

[0010] Furthermore, the tool adjustment part includes a first mounting hole that penetrates the inner wall of the adjustment hole, and the guide block is connected to the first mounting hole.

[0011] Furthermore, the adjustment assembly also includes a limiting bolt, which is threadedly engaged with the portion of the first mounting hole near its outer end, and the guide block is disposed at the portion of the first mounting hole near its inner end.

[0012] Furthermore, the tool adjustment part includes a second mounting hole that penetrates the inner wall of the adjustment hole, and the self-locking block is connected to the second mounting hole.

[0013] Furthermore, the self-locking block includes a housing threadedly connected to the second mounting hole, the interior of the housing having a one-way open receiving cavity, the elastic pressing member being disposed at the bottom of the receiving cavity, the movable end being disposed inside the receiving cavity and abutting against the elastic pressing member, the open end of the receiving cavity being provided with a limiting constriction to prevent the movable end from disengaging from the receiving cavity, and a portion of the movable end being able to extend outward from the limiting constriction.

[0014] Furthermore, the adjustment assembly also includes a top block, on which a first abutment surface and a second abutment surface are formed respectively on both sides. The first abutment surface abuts against the end of the adjustment knob, and the second abutment surface abuts against the transmission part.

[0015] Furthermore, the second contact surface is an arc-shaped surface with the generatrix perpendicular to the axis of the adjustment hole, and the middle part of the arc-shaped surface protrudes relative to the two sides and abuts against the transmission part.

[0016] Furthermore, a spring slot is provided on the side of the transmission unit near the tool reset unit, and the end of the reset spring extends into the spring slot.

[0017] Furthermore, the tool reset part is provided with a spring mounting groove, and the end of the reset spring away from the transmission part extends into the spring mounting groove.

[0018] Furthermore, the mounting bracket also includes a wire positioning part, which is disposed on the side of the cutting part and has a wire positioning groove.

[0019] The following beneficial effects can be achieved by applying this utility model:

[0020] 1. In this invention, during the rotation of the adjusting rod, the guide block causes the adjusting rod to move axially, thereby changing the angle of the cutting tool and achieving different cutting depths. At the same time, the self-locking block moves between several circumferentially arranged locking slots as the adjusting rod rotates. The cutting tool angle corresponding to the self-locking block is different when it stops in different locking slots, so that this invention has several cutting positions corresponding to the number of locking slots. The cutting depth corresponding to each cutting position is a known fixed value. In actual construction, the adjusting rod can be rotated to the corresponding position according to the specific specifications of the wire, which eliminates complicated manual adjustment steps, is highly efficient, and is less likely to damage the core wire.

[0021] 2. This utility model achieves the adjustment of different cutting levels through a simple mechanical structure. The device has a simple structure, does not require electric drive, has low manufacturing cost, and has longer stability and service life.

[0022] 3. In some embodiments, the adjustment component and the mounting bracket are detachably connected, which facilitates the maintenance of the device and allows for the replacement of adjustment rods of different specifications to meet more cutting gear requirements. Attached Figure Description

[0023] Figure 1 This is an exploded view of the blade adjusting mechanism of the wire stripper in the embodiment;

[0024] Figure 2 This is a cross-sectional view of the blade adjusting mechanism of the wire stripper in the embodiment;

[0025] Figure 3 This is a schematic diagram showing the working state of the blade adjusting mechanism of the wire stripper in the embodiment;

[0026] In the picture:

[0027] 1-Mounting bracket, 11-Tool positioning part, 111-Positioning pin, 12-Tool adjustment part, 121-Adjustment hole, 122-First mounting hole, 123-Second mounting hole, 13-Tool reset part, 131-Reset spring, 132-Spring mounting groove, 14-Wire positioning part, 141-Wire positioning groove;

[0028] 2-Peeling tool, 21-Positioning hole, 22-Cutting part, 23-Transmission part, 231-Spring slot;

[0029] 3-Adjustment component, 31-Adjustment lever, 311-Guide slide, 312-Locking groove, 313-Adjustment knob, 32-Guide block, 33-Self-locking block, 331-Housing, 332-Elastic abutment, 333-Moving end, 34-Top block, 35-Limit screw;

[0030] 4-Wire. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0032] Reference Figures 1-3 This embodiment provides a wire stripper adjustment mechanism, which includes a mounting bracket 1, a stripping blade 2, and an adjustment component 3;

[0033] The mounting bracket 1 includes a tool positioning part 11, a tool adjusting part 12, a tool resetting part 13, and a wire positioning part 14. The tool positioning part 11 is provided with a detachable positioning pin 111. The tool adjusting part is provided with an adjusting hole 121, a first mounting hole 122, and a second mounting hole 123. The axis of the adjusting hole 121 is perpendicular to the axis of the positioning pin 111. The first mounting hole 122 and the second mounting hole 123 radially penetrate the inner wall of the adjusting hole 121. The portion of the first mounting hole near its outer end is a screw hole, and the portion near its inner end... Part of it is a light hole, the second mounting hole is a screw hole in whole, the tool reset part 13 is located in the axial direction of the adjustment hole 121, the tool reset part is provided with a reset spring 131 and a spring mounting groove 132 for installing the reset spring, and there is a gap between the reset spring 131 and the adjustment hole 121; the wire positioning part 14 is provided on the side of the stripping tool 2, the wire positioning part has an arc-shaped wire positioning groove 141, and several spirally extending grooves are arranged in the wire positioning groove. When stripping the wire, the wire 4 is placed in the wire positioning groove;

[0034] The stripping tool 2 has a positioning hole 21 in the middle. The stripping tool is movably engaged with the positioning pin 111 through the positioning hole 21, so that the stripping tool can rotate in a plane perpendicular to the axis of the positioning pin. The two ends of the stripping tool form a cutting part 22 and a transmission part 23, respectively. The cutting part 22 forms a cutting edge for cutting the wire sheath. The transmission part 23 is used to receive the force from the adjustment component 3 and change the angle of the stripping tool, thereby adjusting the cutting depth of the cutting part. The transmission part extends between the return spring 131 and the adjustment hole 121. A spring groove 231 is provided on the side of the transmission part near the return spring, and the end of the return spring extends into the spring groove.

[0035] The adjustment assembly 3 includes an adjustment rod 31, a guide block 32, a self-locking block 33, a top block 34, and a limiting screw 35. The outer wall of the adjustment rod 31 is provided with a guide groove 311 that spirals upward around the axis of the adjustment rod and a plurality of locking grooves 312 arranged circumferentially around the axis of the adjustment rod. An adjustment knob 313 is connected to the end of the adjustment rod. The adjustment rod is inserted into the adjustment hole 121 and slides in cooperation with the inner wall of the adjustment hole. The adjustment knob 313 is left outside the adjustment hole for easy operation. Adjusting rod; the guide block 32 is inserted into the light hole area at the inner end of the first mounting hole 122, the end of the guide block passes through the inner wall of the adjusting hole and pushes into the guide groove 311, the guide block slides with the guide groove, when the adjusting rod rotates, the guide block moves along the guide groove and applies an axial thrust to the adjusting rod, thereby causing the adjusting rod to move axially, the limiting screw is inserted into the screw hole area at the outer end of the first mounting hole 122 to restrict the guide block inside the first mounting hole; the self-locking block 33 includes The device includes a housing 331 with external threads, and an inner cavity with a one-way opening inside the housing. An elastic abutment 332 and a movable end 333 are disposed within the inner cavity. The elastic abutment 332 is located at the bottom of the inner cavity and applies a spring force to the movable end 333 in the direction of the inner cavity opening. The opening end of the receiving cavity is provided with a limiting constriction to prevent the movable end from disengaging from the receiving cavity. The movable end has a spherical structure, and a portion of the movable end can extend outward from the limiting constriction. The self-locking block 33 is inserted into the second... The movable end 333 is threaded into the second mounting hole and is inserted into the mounting hole 123. The movable end 333 can protrude or retract relative to the inner wall of the adjusting hole 121. When the movable end corresponds to the position of the locking groove, the movable end protrudes and is inserted into the locking groove. When the movable end corresponds to the position of the outer wall of the adjusting screw, the movable end is in a retracted state. The top block 34 forms a first abutting surface and a second abutting surface on its two sides, respectively. The first abutting surface abuts against the end of the adjusting screw, and the second end surface abuts against the transmission part 23.

[0036] Reference Figure 2When the adjusting rod 31 rotates, the guide block applies an axial thrust and moves the adjusting rod axially. During the axial movement of the adjusting rod, the top block 34 pushes the transmission part 23 of the stripping tool. Under the action of the lever, the cutting part 22 of the stripping tool moves, thereby changing the cutting depth. The self-locking block moves between several circumferentially arranged locking slots as the adjusting rod rotates. The cutting tool angle corresponding to the self-locking block when it stops in different locking slots is different, so that this utility model has several cutting positions corresponding to the number of locking slots. The cutting depth corresponding to each cutting position is a known fixed value. In specific construction, the adjusting rod can be rotated to the corresponding position according to the specific specifications of the wire, which saves the complicated manual adjustment steps, is more efficient, and is less likely to damage the core wire.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A blade adjusting mechanism for a wire stripper, characterized in that: The device includes a mounting bracket (1), a peeling knife (2), and an adjustment assembly (3). The mounting bracket includes a knife positioning part (11), a knife adjustment part (12), and a knife reset part (13). The knife adjustment part (12) has an adjustment hole (121). The adjustment assembly (3) includes an adjustment rod (31), a guide block (32), and a self-locking block (33). The adjustment rod (31) is movably inserted into the adjustment hole (121) and slides in cooperation with the inner wall of the adjustment hole. The outer wall of the adjustment rod is provided with a spirally extending guide groove (311) and several circumferentially spaced locking grooves (312). The guide block (32) protrudes from the inner wall of the adjustment hole and slides in cooperation with the guide groove (311). The self-locking block (33) includes an elastic pressing member (332) and a movable end (333) connected to the elastic pressing member. The movable end (333) can protrude or retract relative to the inner wall of the adjustment hole, and the movable end can be engaged with any of the locking grooves (312); the tool reset part (13) is provided with a reset spring (131) that corresponds to the position of the adjustment hole (121) in the axial direction, and there is a gap between the reset spring and the adjustment hole; the tool positioning part (11) is provided with a positioning pin (111), the axis of the positioning pin is perpendicular to the axis of the adjustment hole, the middle part of the peeling tool (2) is provided with a tool positioning hole (21) that is movably engaged with the positioning pin (111), the two ends of the peeling tool respectively form a cutting part (22) and a transmission part (23), the transmission part extends between the reset spring (131) and the adjustment hole (121), and the reset spring and the adjustment rod abut against the transmission part from opposite sides.

2. The blade adjusting mechanism of a wire stripper according to claim 1, characterized in that: The tool adjustment part includes a first mounting hole (122) that penetrates the inner wall of the adjustment hole, and the guide block (32) is connected to the first mounting hole.

3. The adjusting mechanism of a wire stripper according to claim 2, characterized in that: The adjustment assembly also includes a limiting bolt (35), which is threadedly engaged with the outer end of the first mounting hole (122), and the guide block (32) is located at the inner end of the first mounting hole (122).

4. The blade adjusting mechanism of a wire stripper according to claim 1, characterized in that: The tool adjustment part (12) includes a second mounting hole (123) that penetrates the inner wall of the adjustment hole, and the self-locking block (33) is connected to the second mounting hole (123).

5. The blade adjusting mechanism of a wire stripper according to claim 4, characterized in that: The self-locking block (33) includes a housing (331) threadedly connected to the second mounting hole. The housing has a unidirectional opening cavity inside. The elastic pressing member (332) is disposed at the bottom of the cavity. The movable end (333) is disposed inside the cavity and abuts against the elastic pressing member. The opening end of the cavity is provided with a limiting constriction to prevent the movable end from disengaging from the cavity. A portion of the movable end can extend outward from the limiting constriction.

6. The blade adjusting mechanism of a wire stripper according to claim 1, characterized in that: The adjustment assembly also includes a top block (34), on which a first abutment surface and a second abutment surface are formed respectively on both sides. The first abutment surface abuts against the end of the adjustment lever (31), and the second abutment surface abuts against the transmission part (23).

7. The adjusting mechanism of a wire stripper according to claim 6, characterized in that: The second contact surface is an arc-shaped surface with the generatrix perpendicular to the axis of the adjustment hole. The middle part of the arc-shaped surface protrudes relative to the two sides and abuts against the transmission part (23).

8. The blade adjusting mechanism of a wire stripper according to claim 1, characterized in that: The transmission part (23) is provided with a spring slot (231) on the side near the tool reset part, and the end of the reset spring (131) extends into the spring slot (231).

9. The blade adjusting mechanism of a wire stripper according to claim 1, characterized in that: The tool reset part (13) is provided with a spring mounting groove (132), and the end of the reset spring away from the transmission part extends into the spring mounting groove.

10. The blade adjusting mechanism of a wire stripper according to claim 1, characterized in that: The mounting bracket (1) also includes a wire positioning part (14), which is located on the side of the cutting part and has a wire positioning groove (141).

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