CN213917996U

CN213917996U - Spiral tightening device for metal wire

Info

Publication number: CN213917996U
Application number: CN202023005208.2U
Authority: CN
Inventors: 刘盾; 张伟杰; 张逸飞; 徐冲; 郭新龙
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-08-10
Anticipated expiration: 2030-12-14

Abstract

The utility model relates to a screw tightening device for metal wires, which comprises a nut piece, wherein two sides of the outer surface of the nut piece are respectively hinged with a clamping piece, the symmetrical center lines of the two clamping pieces are parallel to the central axis of the nut piece, and the two clamping pieces can be opened and closed to clamp two ends of the metal wires to be tightened; the nut piece is internally provided with a lead screw in a penetrating way, and the structure of the lead screw and the structure of the nut piece are set as follows: the linear motion of the lead screw can be converted into the rotation of the nut piece, so that the nut piece can drive the two ends of the metal wire to be screwed to mutually wind and screw.

Description

Spiral tightening device for metal wire

Technical Field

The utility model belongs to the technical field of the instrument pincers, concretely relates to spiral tightening device for wire.

Background

The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.

The metal wires such as iron wires, steel wires and the like are commonly used as connecting pieces or reinforcing pieces of rod piece nodes, for example, two mutually vertical steel bars in a steel bar cage are bound through binding wires, and the two ends of the metal wires are tightened by a spiral winding mode after bypassing a workpiece to be bound, so that the bound workpiece is fixed. While twisting wires and wires is one of the basic uses of pliers, the pliers under the prior art need to rotate the handles when twisting wires. After the forceps handle is rotated for a certain angle, the forceps head needs to be loosened to reset the wrist, and the working efficiency is reduced.

The inventor has simultaneously known that the power of having an effect of pincers handle rotation and wrist needs certain operating space, and in shaped steel, reinforcing bar, scaffold frame intensive place, when adopting ordinary pliers to screw up the wire both ends, often because the blockking of other parts, lead to taking up the not convenient power of having an effect of big pincers handle in space and wrist, influence the process of screwing up of wire.

Disclosure of Invention

The present disclosure is directed to a device and a method for screwing a wire, which can solve at least one of the above problems.

In order to achieve the above object, one or more embodiments of the present disclosure provide a screw tightening device for a metal wire, including a nut member, two clamping members respectively hinged to two sides of an outer surface of the nut member, a symmetric center line of the two clamping members being parallel to a central axis of the nut member, the two clamping members being capable of opening and closing to clamp two ends of the metal wire to be tightened;

the nut piece is internally provided with a lead screw in a penetrating way, and the structure of the lead screw and the structure of the nut piece are set as follows: the linear motion of the lead screw can be converted into the rotation of the nut piece, so that the nut piece can drive the two ends of the metal wire to be screwed to mutually wind and screw.

Furthermore, the clamping piece comprises a clamping arm, one end of the clamping arm is hinged to the outer surface of the nut piece, the other end of the clamping arm is fixedly connected with the clamping rods, and the clamping rods are semi-cylindrical so that the two clamping rods can be spliced to form a cylindrical structure.

Furthermore, the opposite side of the clamping rod is provided with a groove along the extension direction of the clamping rod, a spring pressing plate is arranged in the groove, a spring is arranged between the spring pressing plate and the inner wall of the groove, and the side of the spring pressing plate departing from the groove forms a clamping surface.

Furthermore, notches are formed in the opposite side faces of the clamping rods, and cutting knives are arranged in the notches.

Furthermore, an end plate is arranged at one end, close to the clamping rod, of the lead screw, a return spring is sleeved outside the lead screw, and the return spring is located between the end plate and the nut piece.

Further, still include the instrument pincers, the instrument pincers include two pincers bodies of middle part articulated, and every pincers body includes pincers handle and binding clip, and the one end that the pincers handle was kept away from to the binding clip is equipped with the semicircular groove respectively, and two semicircular grooves can cooperate and form the through-hole, and the through-hole is used for passing the cylindrical structure that two supporting rods formed, and the diameter numerical value of through-hole equals the external diameter numerical value of the cylindrical structure that two supporting rods formed.

Further, the central axis of the hinge point of the clamping arm and the nut piece is parallel to the central axis of the hinge point between the two clamp bodies.

Furthermore, the lower end of the screw rod is fixedly connected with the upper end of one of the clamp handles, and the central axis of the screw rod is superposed with the symmetrical central line of the tool clamp.

The beneficial effects of one or more technical schemes are as follows:

the utility model discloses the cooperation of well adoption lead screw and nut spare provides the rotation, and the rotation of nut spare makes the holder can drive by the mutual spiral winding in the wire both ends of centre gripping, and then accomplishes the operation of screwing up. In the process, the linear motion of the screw rod is converted into the rotation of the nut piece, the wrist does not need to be repeatedly reversed, and the time efficiency is improved; and the space occupied by the rotation of the nut member and the clamping member is small, and enough space is not required to be reserved for providing the rotation of the forceps handle and the wrist, so that the metal wire can be screwed conveniently in a relatively small space.

The utility model discloses in set up the recess in the relative side department of supporting rod to set up spring clamp plate in the recess, spring clamp plate can take place the displacement of rectilinear direction for the recess at the in-process of centre gripping wire, and then makes spring clamp plate after compressing tightly the wire, and two supporting rods still can form cylindric structure, can not influence its rotation in the through-hole because the size change of the cylinder structure that the supporting rod formed.

Drawings

The accompanying drawings, which form a part of the specification, are provided to provide a further understanding of the invention, and are included to explain the illustrative embodiments and the description of the invention, and not to constitute a limitation of the invention.

Fig. 1 is a schematic view of the overall structure in embodiment 1 of the present disclosure;

FIG. 2 is a schematic structural view of a clamp arm and a nut member according to embodiment 1 of the present disclosure;

FIG. 3 is a partial schematic structural view of the clamping rod and the clamp rod in accordance with embodiment 1 of the present disclosure;

FIG. 4 is a front view of the pliers rod and the pliers head used together in accordance with embodiment 1 of the present disclosure;

fig. 5 is a schematic axial structure diagram of a binding clip according to embodiment 1 of the present disclosure;

FIG. 6 is a schematic view of the grasper handle of example 2 of the present disclosure, gripping a wire;

FIG. 7 is a schematic view of the nut member being rotated to knot the wire by pulling the handle downward in accordance with embodiment 2 of the present disclosure;

FIG. 8 is a schematic view of the pliers being pulled away from the wire by releasing the handles of the pliers according to embodiment 2 of the present disclosure;

FIG. 9 is a schematic view of the pliers handles being grasped after the wires are pulled apart in accordance with embodiment 2 of the present disclosure in preparation for returning the nut members;

FIG. 10 is a schematic view of the return of the spring-urged nut member in embodiment 2 of the present disclosure;

fig. 11 is a schematic view of the pliers head being pushed to the initial state by the spring after the pliers handle is released in embodiment 2 of the present disclosure.

In the figure, 1, a clamp lever; 2. a lead screw; 3. a binding clip; 4. a forceps handle; 5. a spring; 6. a locked member; 7. a metal wire; 301. a clamp arm; 302. a nut member; 303. a clamping rod; 304. a cutter; 305. a spring pressing plate; 306. and pushing the spring outwards.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

For convenience of description, the words "up, down, left and right" in this disclosure, if any, merely indicate correspondence with the up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure.

Example 1

As shown in fig. 1 to 5, the present embodiment provides a screw tightening device for a metal wire, which includes a nut member 302, two clamping members are respectively hinged to two sides of an outer surface of the nut member 302, symmetric center lines of the two clamping members are parallel to a central axis of the nut member 302, and the two clamping members can be opened and closed to clamp two ends of the metal wire to be tightened; the nut member 302 is provided with a lead screw 2, and the structure of the lead screw 2 and the nut member 302 is set as follows: the linear motion of the screw 2 can be converted into a rotation of the nut member 302 so that the nut member 302 can bring both ends of the wire to be tightened to be twisted around each other and tightened.

The clamping member comprises a clamping arm 301, one end of the clamping arm 301 is hinged with the outer surface of the nut member 302, the other end of the clamping arm 301 is fixedly connected with a clamping rod 303, and the clamping rod 303 is semi-cylindrical, so that the two clamping rods 303 can be spliced to form a cylindrical structure.

In order to facilitate the two clamping arms and the clamping rod to be opened at any time, a push-out spring is arranged between the clamping arms and the nut member in the embodiment. The spring causes a tendency to separate the two gripping shanks from each other.

The opposite side of clamping rod 303 forms the recess along clamping rod 303 extending direction, is equipped with spring clamp plate 305 in the recess, installs spring 5 between the inner wall of spring clamp plate 305 and recess, and the side that spring clamp plate 305 deviates from the recess forms the clamping face.

The gripper bar 303 has notches at opposite sides thereof, with cutters 304 therein. It can be understood that, in the present embodiment, by the two cutters 304 being arranged oppositely, after the both ends of the wire are screwed, the unfinished part can be cut off by the cutters 304.

An end plate is arranged at one end, close to the clamping rod 303, of the screw rod 2, a return spring 5 is sleeved outside the screw rod 2, and the return spring 5 is located between the end plate and the nut piece 302.

It can be understood that, in this embodiment, in order to facilitate the opening and closing of the driving clamping piece, the tool pliers further include two pliers bodies hinged to each other at the middle portion, each pliers body includes a pliers handle 4 and a pliers rod 1, one end of each pliers rod 1, which is far away from the pliers handle 4, is respectively provided with a semicircular groove, the two semicircular grooves can be matched to form a through hole, the through hole is used for passing through a cylindrical structure formed by the two clamping rods 303, and the diameter value of the through hole is equal to the outer diameter value of the cylindrical structure formed by the two clamping rods 303.

The central axis of the hinge point of the clamping arm 301 and the nut member 302 is parallel to the central axis of the hinge point between the two caliper bodies.

The lower end of the screw rod 2 is fixedly connected with the upper end of one of the pliers handles 4, and the central axis of the screw rod 2 is superposed with the symmetrical central line of the pliers.

Example 2

As shown in fig. 1, 6 to 11, the present embodiment provides a method of tightening a wire using the screw tightening device for a wire described in embodiment 1, including the steps of:

step 1: through the relative movement of the nut member and the lead screw, one end of the clamping metal wire in the clamping member is positioned at the limit position close to the lead screw.

As shown in fig. 1 and 6, step 2: the two clamps are opened, the two ends of the wire to be screwed are placed between the two clamps, and then the two clamps are closed and the wire is fixed.

Specifically, when initial condition, open between two pincers handles so that open between two claw poles, and then the claw pole relaxs the restraint to the holding rod, under the thrust of extrapolation spring, opens two holders, will treat the wire both ends of screwing up and place between two holders, then hold two pincers handles tightly, two claw poles are closed, and then make two holders closed and fixed.

As shown in fig. 7, step 3: the lead screw is pulled towards the direction far away from the metal wire, the linear motion of the lead screw is converted into the rotation of the nut piece and the clamping piece, and the spiral winding of the two ends of the metal wire to be screwed is completed in the rotation process of the clamping piece so as to realize the screwing.

Specifically, the clamp handle is pulled in the direction away from the metal wire to pull the screw rod 2, the linear motion of the screw rod 2 is converted into the rotation of the nut member 302, and the nut member 302 completes the spiral winding of the two ends of the metal wire to be screwed in the rotation process so as to realize the screwing.

As shown in fig. 8-11, step 4: and loosening the clamping of the two clamping pieces to enable the nut piece and the lead screw to rotate relatively, resetting the nut piece and enabling the clamping pieces to be at the limit positions close to the lead screw.

Specifically, the clamp handle is loosened, and then the clamping of the two clamping pieces is loosened, so that the two ends of the metal wire are pulled away from the clamping pieces; then the clamp handle is grasped again, so that the two clamping rods are closed again to form a cylindrical structure, the nut member 302 and the lead screw 2 are relatively rotated under the pushing of the reset spring, the clamping members are reset to be close to the extreme positions of the lead screw 2, and the clamping members and the nut member 302 are reset.

Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims

1. A spiral tightening device for metal wires is characterized by comprising a nut piece, wherein two sides of the outer surface of the nut piece are respectively hinged with a clamping piece, the symmetrical center lines of the two clamping pieces are parallel to the central axis of the nut piece, and the two clamping pieces can be opened and closed to clamp two ends of a metal wire to be tightened;

2. The screw tightening apparatus for a metal wire according to claim 1, wherein the clamping member includes a clamping arm having one end hinged to an outer surface of the nut member and the other end fixedly connected to the clamping bar, the clamping bar having a semi-cylindrical shape so that the two clamping bars can be spliced to form a cylindrical structure.

3. The screw tightening device for a metal wire according to claim 2, wherein grooves are formed at opposite sides of the clamping bar in the extending direction of the clamping bar, spring pressing plates are provided in the grooves, springs are installed between the spring pressing plates and the inner walls of the grooves, and the sides of the spring pressing plates facing away from the grooves form clamping surfaces.

4. The screw tightening apparatus for a metal wire according to claim 2, wherein the holder bar has notches at opposite sides thereof, the notches having cutting blades therein.

5. The wire screw according to claim 2, wherein an end plate is provided at an end of the screw shaft adjacent to the clamping rod, and a return spring is provided outside the screw shaft and between the end plate and the nut member.

6. The screw tightening device for metal wires according to claim 1, further comprising a tool clamp, wherein the tool clamp comprises two clamp bodies hinged at the middle, each clamp body comprises a clamp handle and a clamp rod, one end of the clamp rod, which is far away from the clamp handle, is respectively provided with a semi-circular groove, the two semi-circular grooves can be matched to form a through hole, the through hole is used for penetrating through a cylindrical structure formed by the two clamping rods, and the diameter value of the through hole is equal to the outer diameter value of the cylindrical structure formed by the two clamping rods.

7. The screw tightening device for a wire according to claim 2, wherein a center axis of a hinge point of the clamp arm and the nut member is parallel to a center axis of a hinge point between the two jaw bodies.

8. The screw tightening device for a metal wire according to claim 6, wherein a lower end of the lead screw is fixedly connected to an upper end of one of the pliers shanks, and a central axis of the lead screw coincides with a center line of symmetry of the pliers.