A portable loop-making pliers

Abstract

The present invention discloses a portable wire looping pliers, which relates to the field of manual tools. In the on-site meter installation and power connection process, wire looping is basically carried out by using needle-nose pliers for winding. The size of the wound loop cannot be accurately controlled, which is time-consuming and laborious. The present invention includes a pliers body, a pliers handle and a wire looping device. The wire looping device is rotatably connected to the central axis of the pliers body. An arc-shaped sliding groove penetrating axially is provided on the pliers body. A rotating guiding and positioning shaft matching the width of the arc-shaped sliding groove is provided on the wire looping device. A wire bending wheel for wire bending and shaping is provided on the positioning shaft at the outer side of the pliers body. A wire loop inner shaft for wire bending and shaping is provided on the central axis at the outer side of the pliers body. When looping the wire, insert the head of the wire between the wire bending wheel and the wire loop inner shaft. The wire loop inner shaft serves as the inner diameter mold of the loop. Hold the pliers handle with one hand and hold the wire looping device with the other hand, and rotate it from one side of the arc-shaped sliding groove to the other side to complete wire looping. The structure is simple, lightweight, with high looping accuracy, convenient to carry, and convenient for on-site wire looping.

Description

Technical Field

[0001] The present invention relates to the field of manual tools, and particularly to a portable wire looping pliers. Background Art

[0002] Currently, in the process of meter installation and power connection, when installing an instrument transformer, power personnel need to loop one end of the exposed wire, then fix it on a nut, and then put in a gasket and a spring washer to ensure effective power supply of the instrument transformer. For the requirement of the loop, the size of the loop should ensure that the loop can completely fit over the bolt, and at the same time its diameter should be smaller than that of the gasket. The commonly used method is to use needle-nose pliers to loop the wire, which has the problems that the size of the loop cannot be accurately controlled, and it may be necessary to repeatedly adjust the size, which is time-consuming and laborious. Currently, the looping machines on the market are large in size and heavy in weight. They adopt single-chip microcomputer integrated control, require connection to a 220V power supply, and have a complex structure and inconvenient maintenance, so they are not suitable for use at the meter installation and power connection site. Summary of the Invention

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve and refine the existing technical solution, and provide a portable wire looping pliers for the purpose of being convenient to carry and quickly and accurately looping wires at the construction site. To this end, the present invention adopts the following technical solutions.

[0004] A portable wire looping pliers includes a pliers body, a pliers handle and a wire looping device. The upper end of the pliers handle is fixedly connected to the lower end of the pliers body. The lower end of the wire looping device is rotatably connected through the central axis of the pliers body end. An arc-shaped chute that penetrates axially is provided on the pliers body and is coaxial with the central axis. A rotary guiding and positioning shaft that matches the width of the arc-shaped chute is provided at the lower part of the wire looping device. A wire bending wheel for wire bending and shaping is provided at the position of the positioning shaft outside the pliers body. A coil inner shaft for wire bending and shaping is provided at the position of the central axis outside the pliers body. When looping the wire, the wire is located between the wire bending wheel and the coil inner shaft. By using the coil inner shaft as a mold for the inner diameter of the loop and controlling the wire bending wheel to bend and loop the wire by rotating the wire looping device, the accurate looping of the wire can be conveniently and quickly realized. When looping, insert the head of the wire with the insulation removed between the wire bending wheel and the coil inner shaft. Hold the wire and the pliers body with one hand, and control the wire looping device to rotate from one side of the arc-shaped chute to the other side with the other hand to complete the looping of the wire head. The overall structure is simple, small in size, light in weight, convenient for looping operation, high in looping accuracy, fast in speed, does not require an external power supply, can be completely operated with both hands, is convenient to carry, and is suitable for on-site looping operations.

[0005] As a preferred technical means: The pliers body includes a connecting portion connected to the pliers handle and two symmetric sub-pliers bodies disposed on the connecting portion. There is a limiting groove between the two sub-pliers bodies, and the limiting groove restricts the looping device to only rotate circumferentially and prevent axial movement. The arc-shaped sliding groove is disposed on the two sub-pliers bodies. The positioning shaft passes through the arc-shaped sliding grooves of the two sub-pliers bodies, and a wire bending wheel is disposed at each outer side position of the two sub-pliers bodies. The central shaft passes through the two sub-pliers bodies and a coil inner shaft is disposed at each outer side position of the two sub-pliers bodies. By providing two looping structures on one tool, coil inner shafts of two looping models with different inner hole sizes can be configured simultaneously, and looping can be achieved simultaneously, which can effectively adapt to different looping specifications and improve the looping efficiency.

[0006] As a preferred technical means: A stopper for limiting the position of the wire during wire looping is provided on the lower left side of the coil inner shaft. During looping, the stopper helps to limit the lateral outward movement of the wire when it is stressed. When looping, only a small force from the hand is needed to control and fix the wire.

[0007] As a preferred technical means: The wire bending wheel includes a wheel body provided with an initial contact plane for abutting against the wire and a wheel tip protruding outward from the wheel body. When the rotation guiding and positioning shaft is located at the left end of the arc-shaped sliding groove, the initial contact plane abuts against the wire, and the wheel tip is located at the upper end position of the initial contact plane. The tip of the wheel tip is processed with an arc angle, and there is an arc transition surface between the wheel tip and the initial contact plane. The initial contact plane can effectively improve the lateral positioning at the initial stage of wire looping. The rounded wheel tip serves as the contact and bending part of the wire and is not easy to damage the wire.

[0008] As a preferred technical means: The wire bending wheel and the positioning shaft are detachably fitted through an equilateral polygon hole-shaft matching structure, and the wire bending wheel is fixed by a fastener on the outside. The positioning and installation of the wire bending wheel are realized, and the disassembly and replacement of the wire bending wheel can be achieved by fixing with a fastener, which is convenient for replacing wire bending wheels of different specifications.

[0009] As a preferred technical means: The coil inner shaft and the central shaft are detachably connected. The replacement of the coil inner shaft can be realized, which is convenient for replacing the coil inner shaft with different looping inner diameter specifications.

[0010] As a preferred technical means: Wire placement grooves penetrating up and down are provided on the front and rear sides of the pliers handle, and the bottom of the wire placement groove is aligned with the outer side end faces of the two sub-pliers bodies. Lateral limitation of the wire can be realized, and it can be avoided that the overall force of the wire moves laterally during looping, resulting in a decline in looping quality.

[0011] As a preferred technical means: a horizontally penetrating connection groove is provided at the upper end of the pliers handle, and an embedding block matching the connection groove is provided at the lower end of the connection part. The pliers handle and the embedding block are fastened by a countersunk screw at the bottom surface of the wire placement groove. The fitting connection and screw fixation are convenient for processing.

[0012] As a preferred technical means: the diameters of the inner shafts of the two guide coils are 6 mm and 8 mm. The two coiling specifications of 6 mm and 8 mm are used more frequently, with a low replacement rate, which can effectively improve the working efficiency.

[0013] As a preferred technical means: the left and right sides of the pliers handle are arc cylindrical surfaces, the front and rear sides are end planes, and the upper part of the end plane is connected to the outer end faces of the two sub-pliers bodies through inclined planes; the outer circumferences of the two sub-pliers bodies are arc cylindrical surfaces coaxial with the arc-shaped sliding groove, the left end of the arc-shaped sliding groove is vertically located between the inner shaft of the guide coil and the stopper, and the right end of the arc-shaped sliding groove is vertically lower than the stopper. The arc treatment can effectively reduce the weight of the tool, facilitate hand holding, and has good safety. The shape and position of the arc-shaped sliding groove conform to the coiling operation habits of the staff.

[0014] A plastic handle is provided at the hand-holding part of the coiler. It effectively expands the contact area of the hand-holding part. Made of plastic material, it is easier to hold and grip tightly.

[0015] Anti-disengagement blocks for preventing the wire from disengaging forward and backward are provided on the front and rear sides of the pliers body. By providing anti-disengagement blocks on the front and rear sides of the two sub-pliers bodies, the wire can be effectively prevented from disengaging forward and backward.

[0016] Beneficial effects: The overall structure is simple, small in size, light in weight, without an external power supply, can be completely operated with both hands, the wire coiling operation is convenient, the coiling accuracy is high, the speed is fast, easy to carry, and convenient for on-site coiling operations; it can effectively realize coiling with multiple inner hole diameter specifications and adapt to different coiling hole diameter requirements. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the present invention.

[0018] Figure 2 It is a schematic coiling diagram of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the pliers body of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the pliers handle of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the wire bending wheel of the present invention.

[0022] In the figure: 1 - pliers body; 2 - pliers handle; 3 - loop former; 4 - central axis; 5 - positioning axis; 6 - wire bending wheel; 7 - stopper; 8 - anti - detachment block; 9 - wire; 10 - inner shaft of wire coil; 101 - arc - shaped chute; 102 - split pliers body; 103 - limiting groove; 104 - embedding block; 201 - inclined plane; 202 - end plane; 203 - wire placement groove; 204 - connecting groove; 301 - plastic handle; 601 - wheel body; 602 - wheel tip; 603 - initial contact plane. Detailed implementation mode

[0023] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings of the specification.

[0024] As Figures 1-5 shown, a portable looping pliers includes a pliers body 1, a pliers handle 2 and a loop former 3. The upper end of the pliers handle 2 is fixedly connected to the lower end of the pliers body 1. The lower end of the loop former 3 is rotatably connected through the central axis 4 in the end direction of the pliers body 1. An arc - shaped chute 101 that penetrates in the end direction and is coaxial with the central axis 4 is provided on the pliers body 1. A rotary guiding and positioning axis 5 that matches the width of the arc - shaped chute 101 is provided at the lower part of the loop former 3. A wire bending wheel 6 for bending and shaping the wire 9 is provided at the position outside the pliers body 1 on the positioning axis 5. A wire coil inner shaft 10 for bending and shaping the wire 9 is provided at the position outside the pliers body 1 on the central axis 4. When looping the wire 9, the wire 9 is located between the wire bending wheel 6 and the wire coil inner shaft 10.

[0025] In order to realize looping of two different specifications of inner hole diameters of the wire 9, the pliers body 1 includes a connecting part connected to the pliers handle 2 and two symmetric split pliers bodies 102 provided on the connecting part. A limiting groove 103 is formed between the two split pliers bodies 102. The limiting groove 103 limits the loop former 3 to only rotate circumferentially and prevents axial movement. The arc - shaped chute 101 is provided on the two split pliers bodies 102. The positioning axis 5 passes through the arc - shaped chutes 101 of the two split pliers bodies 102, and a wire bending wheel 6 is provided at the outside position of each of the two split pliers bodies 102. The central axis 4 passes through the two split pliers bodies 102 and a wire coil inner shaft 10 is provided at the outside position of each of the two split pliers bodies 102. By providing two looping structures on one tool, two wire coil inner shafts 10 of different inner hole sizes can be configured at the same time, and looping can be realized simultaneously, which can effectively adapt to different looping specifications and models and improve the looping efficiency.

[0026] In order to prevent the wire 9 from laterally moving outward when stressed, a stopper 7 for limiting the position of the wire 9 during wire looping is provided at the lower left side of the wire coil inner shaft 10. During looping, the stopper 7 helps to limit the lateral outward movement of the wire 9 when stressed. During looping, only a relatively small force from the hand is needed to control and fix the wire 9.

[0027] To improve the lateral positioning of the wire 9 at the initial stage of forming a loop, the wire bending wheel 6 for the wire 9 includes a wheel body 601 provided with an initial contact plane 603 for abutting against the wire 9 and a wheel tip 602 protruding outward from the wheel body 601. When the rotating guide positioning shaft 5 is located at the left end of the arc-shaped chute 101, the initial contact plane 603 abuts against the wire 9, the wheel tip 602 is located at the upper end position of the initial contact plane 603, the tip of the wheel tip 602 is subjected to an arc angle treatment, and an arc transition surface is provided between the wheel tip 602 and the initial contact plane 603. The initial contact plane 603 can effectively improve the lateral positioning of the wire 9 at the initial stage of forming a loop. The rounded wheel tip 602 serves as the contact and bending part of the wire 9 and is not likely to damage the wire 9.

[0028] To facilitate the replacement of wire bending wheels 6 of different specifications and models, the wire bending wheel 6 for the wire 9 and the positioning shaft 5 are detachably fitted through an equilateral polygon hole-shaft matching structure, and the outside of the wire bending wheel 6 is fixed by a fastener. The positioning and installation of the wire bending wheel 6 for the wire 9 are realized, and the disassembly and replacement of the wire bending wheel 6 for the wire 9 can be achieved by fixing with a fastener, which is convenient for replacing wire bending wheels 6 of different specifications and models.

[0029] To replace the inner shaft 10 of the wire coil of different specifications, the inner shaft 10 of the wire coil and the central shaft 4 are detachably connected. The replacement of the inner shaft 10 of the wire coil can be realized, which is convenient for replacing the inner shaft 10 of the wire coil with different loop inner diameter specifications.

[0030] To realize the lateral limit of the wire 9, wire placement grooves 203 penetrating up and down are provided on the front and back sides of the pliers handle 2, and the bottom of the wire placement groove 203 is aligned with the outer end faces of the two split plier bodies 102. The lateral limit of the wire 9 can be realized, and it can be avoided that the overall force of the wire 9 shifts laterally during loop forming, resulting in a decrease in the loop forming quality.

[0031] To achieve a simple and firm connection structure, a horizontally penetrating connection groove 204 is provided at the upper end of the pliers handle 2, an embedding block 104 matching the connection groove 204 is provided at the lower end of the connection part, and the pliers handle 2 and the embedding block 104 are fastened by a countersunk head screw at the bottom surface of the wire placement groove 203. The fitting connection and screw fixation result in a simple, firm and convenient-to-process connection structure.

[0032] To improve the use efficiency and reduce the replacement times of the inner shaft 10 of the wire coil, the diameters of the two inner shafts 10 of the wire coil are 6 mm and 8 mm. The two loop forming specifications of 6 mm and 8 mm are used more frequently and have a low replacement rate, which can effectively improve the working efficiency.

[0033] For easy gripping, the left and right sides of the pliers handle 2 are arc cylindrical surfaces, and the front and back sides are end planes 202. The upper part of the end plane 202 is connected to the outer end faces of the two sub-pliers bodies 102 through inclined planes 201. The outer circumferences of the two sub-pliers bodies 102 are arc cylindrical surfaces coaxial with the arc-shaped chute 101. The left end of the chute of the arc-shaped chute 101 is vertically located between the inner shaft 10 of the guide coil and the stopper 7, and the right end of the arc-shaped chute 101 is vertically lower than the stopper 7. The arc treatment can effectively reduce the weight of the tool, facilitate hand gripping, and has good safety. The shape and position of the arc-shaped chute 101 conform to the looping operation habits of the staff.

[0034] To make the handshake more comfortable, the handshake part of the looping tool 3 is provided with a plastic handle 301. It effectively expands the contact area of the handshake part. Using plastic material makes the handshake more comfortable and easier to hold and grip tightly.

[0035] To prevent the wire 9 from disengaging in the front and back directions, anti-disengagement blocks 8 for preventing the wire 9 from disengaging in the front and back directions are provided on the front and back sides of the pliers body 1. By arranging the anti-disengagement blocks 8 on the front and back sides of the two sub-pliers bodies 102, the wire 9 can be effectively prevented from disengaging in the front and back directions.

[0036] Using the inner shaft 10 of the guide coil as the mold for the inner diameter of the loop, by rotating the looping tool 3 to control the wire bending wheel 6 of the wire 9 to bend and loop the wire 9, the precise looping of the wire 9 can be conveniently and quickly achieved. When looping, the head of the wire 9 with the insulation stripped is inserted between the wire bending wheel 6 and the inner shaft 10 of the guide coil. The stopper 7 is located on the same side of the wire bending wheel 6, and the wire 9 is limited in the wire placement groove 203. Close the anti-disengagement block 8. Hold the wire 9 and the pliers handle 2 of the pliers body 1 with one hand, and control the looping tool 3 to rotate from the left side of the arc-shaped chute 101 to the other side with the other hand to complete the looping of the head of the wire 9. The looping operation is convenient, with high looping accuracy and fast speed. The overall structure is simple, small in size, light in weight, easy to carry, and convenient for on-site looping operations.

[0037] In this embodiment, the inner shaft 10 of the guide coil and the central shaft 4 are in threaded fit.

[0038] The above Figures 1-5 The portable looping pliers shown above are specific embodiments of the present invention, which have already demonstrated the prominent substantive features and remarkable progress of the present invention. According to the actual usage needs, under the inspiration of the present invention, equivalent modifications can be made to its shape, structure, etc., and all are within the protection scope of this solution.

Claims

1. A portable looping pliers, characterized in that: It includes a pliers body (1), pliers handles (2) and a wire looping device (3). The upper end of the pliers handles (2) is fixedly connected to the lower end of the pliers body (1). The lower end of the wire looping device (3) is rotatably connected through the central axis (4) of the pliers body (1) endwise. An arc-shaped sliding groove (101) that penetrates endwise and is coaxial with the central axis (4) is provided on the pliers body (1). A positioning shaft (5) for rotational guidance that matches the width of the arc-shaped sliding groove (101) is provided at the lower part of the wire looping device (3). A wire (9) bending wheel (6) for bending and shaping the wire (9) is provided at the position outside the pliers body (1) on the positioning shaft (5). A coil inner shaft (10) for bending and shaping the wire (9) is provided at the position outside the pliers body (1) on the central axis (4). When looping the wire (9), the wire (9) is located between the wire (9) bending wheel (6) and the coil inner shaft (10).

2. The portable looping pliers according to claim 1, wherein: The pliers body (1) includes a connecting part connected to the pliers handles (2) and two symmetrical sub-pliers bodies (102) provided on the connecting part. A limiting groove (103) is between the two sub-pliers bodies (102). The limiting groove (103) limits the wire looping device (3) to only rotate circumferentially and prevents axial movement. The arc-shaped sliding groove (101) is provided on the two sub-pliers bodies (102). The positioning shaft (5) passes through the arc-shaped sliding grooves (101) of the two sub-pliers bodies (102), and a wire (9) bending wheel (6) is provided at the outside position of each of the two sub-pliers bodies (102). The central axis (4) passes through the two sub-pliers bodies (102), and a coil inner shaft (10) is provided at the outside position of each of the two sub-pliers bodies (102).

3. A portable looping pliers according to claim 2, characterized in that: A limiter (7) for limiting the position of the wire (9) when looping the wire (9) is provided at the lower left side of the coil inner shaft (10).

4. The portable looping pliers according to claim 3, characterized in that: The wire (9) bending wheel (6) includes a wheel body (601) provided with an initial contact plane (603) for abutting against the wire (9) and a wheel tip (602) protruding outward from the wheel body (601). When the positioning shaft (5) is located at the left end of the arc-shaped sliding groove (101), the initial contact plane (603) abuts against the wire (9), and the wheel tip (602) is located at the upper end position of the initial contact plane (603). The tip of the wheel tip (602) is processed with an arc angle, and an arc transition surface is between the wheel tip (602) and the initial contact plane (603).

5. A portable looping pliers according to claim 4, wherein: The wire (9) bending wheel (6) and the positioning shaft (5) are detachably fitted through an equilateral polygon hole-shaft matching structure, and the outside of the wire (9) bending wheel (6) is fixed by a fastener.

6. The portable loop pliers according to claim 5, characterized in that: The coil inner shaft (10) and the central axis (4) are detachably connected.

7. A portable looping pliers according to claim 6, wherein: Wire placement grooves (203) that penetrate up and down are provided on the front and back sides of the pliers handles (2), and the bottom of the wire placement grooves (203) is aligned with the outer end faces of the two sub-pliers bodies (102).

8. A portable looping pliers according to claim 7, characterized in that: The upper end of the pliers handle (2) is provided with a transversely penetrating connection groove (204), and the lower end of the connection part is provided with an embedding block (104) matching the connection groove (204). The pliers handle (2) and the embedding block (104) are fastened by a countersunk screw on the bottom surface of the wire placement groove (203).

9. The portable loop-making pliers according to claim 8, characterized in that: The diameters of the inner shafts (10) of the two guide coils are 6 mm and 8 mm.

10. A portable looping pliers according to claim 8, characterized in that: The left and right sides of the pliers handle (2) are arc cylindrical surfaces, and the front and rear sides are end planes (202). The upper part of the end plane (202) is connected to the outer end faces of the two sub-pliers bodies (102) through inclined planes (201). The outer circumferences of the two sub-pliers bodies (102) are arc cylindrical surfaces coaxial with the arc-shaped sliding grooves (101). The left end of the groove of the arc-shaped sliding groove (101) is vertically located between the inner shaft (10) of the guide coil and the stopper (7), and the right end of the arc-shaped sliding groove (101) is vertically lower than the stopper (7).

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