CN222052287U - Crimping pliers - Google Patents

Abstract

The utility model belongs to the technical field of wire pressing pliers, and particularly relates to a wire pressing pliers, which comprises a first wire pressing assembly and a second wire pressing assembly; the first wire pressing assembly comprises a first wire pressing part and a first handle part which are connected; the second line pressing part and the second handle part are connected with the second line pressing assembly; the first line pressing part and the second line pressing part are annularly and uniformly distributed with a plurality of traction grooves around the center of the first line pressing part and the second line pressing part, and each traction groove is provided with a line pressing piece in a sliding manner; one end of the wire pressing piece is a wire pressing end, and each wire pressing end is convexly provided with at least one wire pressing block; when the first handle part and the second handle part are pressed to be close to each other, the wire pressing blocks of the wire pressing pieces are respectively pulled to be close to each other through the traction grooves, so that the terminals in the wire pressing cavity are pressed to be connected with the wires in a pressing mode; the outer wall of the terminal is extruded by the line pressing block, so that the outer wall of the terminal is sunken to form a clamping groove to be firmly pressed with the lead, the terminal and the lead are firmly connected and can bear larger pulling force, the terminal and the lead are not easy to loose or separate, and the connection is firm.

Description

Wire pressing pliers

Technical Field

The utility model belongs to the technical field of wire pressing pliers, and particularly relates to a wire pressing pliers.

Background

Electric power engineering, i.e. engineering related to the production, transportation, distribution of electrical energy, also broadly includes engineering that uses electricity as a motive power and energy source in a number of fields. It is also understood that in the power transmission and transformation industry, in the related work of the power engineering, wire clamping pliers are generally used to press the wires and the terminals, so as to connect the terminals and the wires. Common telephone line connectors, network line connectors, connectors of wires and equipment, etc. are all pressed by wire pressing pliers.

For example: the Chinese patent application No. CN201820086814.5 discloses a labor-saving self-adaptive wire pressing pliers, which comprises a long handle, a movable handle, pliers heads arranged on the long handle and in linkage with the movable handle, and a transmission mechanism arranged between the long handle and the movable handle, wherein each pliers head comprises a gear ring in linkage with the movable handle, a plurality of pressing teeth distributed on the gear ring in an annular array, one end of each pressing tooth is respectively connected on the gear ring and forms linkage fit of the gear ring and the pressing teeth, the other end of each pressing tooth is provided with a pressing part extending in a tooth slot of the gear ring, a wire pressing cavity is formed between the pressing parts of each pressing tooth, pin shafts are respectively arranged on the pressing parts of the long handle corresponding to each pressing tooth, and shaft sleeves matched with the pressing teeth are arranged on the pin shafts. The utility model has the advantages of simple structure, stable and reliable performance and convenient operation.

From the above, the labor-saving self-adaptive wire pressing pliers are mutually closed through the crimping parts of the pressing teeth to extrude the terminal positioned in the wire pressing cavity, so that the terminal is extruded to be connected with the wire in a pressing way, and the labor-saving self-adaptive wire pressing pliers are simple in structure and convenient to operate. But it has the following technical drawbacks: the crimping portion of tooth does not be equipped with the tooth, and crimping portion draws close each other and extrudes terminal and wire pressfitting connection, is not firm enough between terminal and the wire, when receiving great pulling force or vibration frequent use scene, can appear taking off or wire and terminal take place the phenomenon that breaks away from, connection fastness remains to improve.

Disclosure of utility model

The utility model aims to provide a wire pressing clamp, which aims to solve the technical problems that in the prior art, a wire pressing clamp is used for pressing and connecting a terminal and a wire, the connection between the terminal and the wire is not firm enough, and the wire is loosened or separated from the terminal.

In order to achieve the above object, the embodiment of the present utility model provides a crimping pliers, which includes a first crimping assembly and a second crimping assembly; the first wire pressing assembly comprises a first wire pressing part and a first handle part which are connected; the second wire pressing part is connected with the second handle part; the first line pressing part is rotationally connected with the second line pressing part; the first line pressing part and the second line pressing part are annularly and uniformly distributed with a plurality of traction grooves around the center of the first line pressing part and the second line pressing part, and each traction groove is internally provided with a line pressing piece in a sliding manner; one end of each wire pressing piece, which is close to each other, is a wire pressing end, each wire pressing end is convexly provided with at least one wire pressing block, and a wire pressing cavity is formed among the wire pressing blocks of the plurality of wire pressing pieces; when the first handle part and the second handle part are pressed to be close to each other, the first wire pressing part and the second wire pressing part rotate relatively and respectively pull the wire pressing blocks of the wire pressing pieces to be close to each other through the traction grooves, so that the terminals in the wire pressing cavities are pressed to be connected with the wires in a pressing mode; when the first handle part and the second handle part are mutually far away, the first line pressing part and the second line pressing part rotate relatively and respectively pull a plurality of line pressing blocks of the line pressing pieces to be mutually far away through a plurality of traction grooves.

Optionally, the plurality of wire pressing members form at least two pairs of oppositely arranged tooth pressing groups; the wire pressing blocks of the two wire pressing pieces of one wire pressing tooth group are arranged in a staggered mode with the wire pressing blocks of the two wire pressing pieces of the other wire pressing tooth group.

Optionally, two wire pressing pieces of one of the wire pressing tooth groups are convexly provided with two wire pressing blocks, and three wire pressing pieces of the other wire pressing tooth group are convexly provided with three wire pressing blocks.

Optionally, the traction groove is provided with a first inclined traction table positioned at the outer side and a second inclined traction table positioned at the inner side, and the traction grooves in the first line pressing part and the second line pressing part are reversely arranged; when the first handle part and the second handle part are pressed to be close to each other, the first wire pressing part and the second wire pressing part rotate relatively and pull the wire pressing block of the wire pressing piece to be close to the wire pressing cavity through the first inclined traction table so as to press the terminal positioned in the wire pressing cavity to be connected with the wire in a pressing mode; when the first handle part and the second handle part are mutually far away, the first line pressing part and the second line pressing part rotate relatively and pull the line pressing block of the line pressing piece to be far away from the line pressing cavity through the second inclined traction table.

Optionally, a positioning seat is worn to be equipped with in the center of first line ball portion with the center of second line ball portion, the line ball chamber is located the center of positioning seat, the outer wall annular equipartition of positioning seat has a plurality of intercommunication the guide way in line ball chamber, the one end of line ball spare is located in the traction groove, the other end sliding connection of line ball spare in the guide way and can follow the guide way removes.

Optionally, a coaxially arranged positioning hole is formed in the bottom of the wire pressing cavity, and the positioning hole is used for positioning the terminal.

Optionally, a return spring is arranged between the first wire pressing assembly and the second wire pressing assembly, and the return spring is used for driving the first handle portion and the second handle portion to be far away from each other.

Optionally, the first wire pressing part is provided with at least two first limiting shafts around the center thereof, the second wire pressing part is provided with at least two first arc limiting grooves around the center thereof, and the two first limiting shafts are respectively arranged in the two first arc limiting grooves in a penetrating manner; when the first line pressing part and the second line pressing part rotate relative to the center of the first line pressing part, the first limiting shaft slides along the first arc limiting groove.

Optionally, the first pressing line part comprises two overlapped first pressing plates; the traction groove is arranged on the two first pressing plates in a penetrating way; the second pressing line part comprises two second pressing plates and two cover plates; the two second pressing plates are respectively overlapped on one sides of the two first pressing plates, which are away from each other; the traction groove is arranged on the two second pressing plates in a penetrating way; the two cover plates are respectively covered on one sides of the two second pressing plates, which are away from each other, and a perforation is arranged in the center of one cover plate in a penetrating way, and the perforation is communicated with the line pressing cavity and is coaxially arranged with the line pressing cavity.

Optionally, at least two second limiting shafts penetrate through the two second pressing plates and the two cover plates around the center of the second pressing line part, the first pressing line part is provided with at least two second arc-shaped limiting grooves around the center of the first pressing line part, and the two second limiting shafts penetrate through the two second arc-shaped limiting grooves respectively; when the first line pressing part and the second line pressing part rotate relative to the center of the first line pressing part, the second limiting shaft slides along the second arc limiting groove.

Compared with the prior art, the wire pressing pliers provided by the embodiment of the utility model have one or more of the following technical schemes:

When in wire pressing, a user applies force to press the first handle part and the second handle part to be close to each other, the first wire pressing part and the second wire pressing part are driven to rotate relatively and respectively pull wire pressing blocks of the wire pressing pieces to be close to each other through the plurality of traction grooves, so that the plurality of wire pressing blocks squeeze the terminals and the wires in the wire pressing cavity, the outer wall of the terminals are squeezed through the wire pressing blocks, the outer wall of the terminals is sunken to form clamping grooves to be firmly pressed with the wires, and accordingly the terminals and the wires are firmly connected and can bear larger pulling force, the terminals and the wires are not easy to loose or separate, and firm connection is achieved.

The wire pressing blocks of the two wire pressing pieces of one tooth pressing group and the wire pressing blocks of the two wire pressing pieces of the other tooth pressing group are arranged in a staggered mode, the outer walls of the terminals in the wire pressing cavity are extruded through the wire pressing blocks of the two groups of staggered arrangement, clamping grooves are formed in the upper concave mode on the outer walls of two adjacent sides of the terminals in a staggered mode, and therefore the connection between the terminals and the wires is firmer, and larger pulling force can be borne without loosening or separating.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a crimping tool according to the present utility model.

Fig. 2 is an exploded view of the crimping tool of the present utility model.

Fig. 3 is a schematic structural view of a hidden cover plate of the crimping pliers of the present utility model.

Fig. 4 is a partial schematic structure of fig. 3.

Fig. 5 is a schematic structural view of the wire pressing member of the present utility model.

Fig. 6 is a schematic view of the terminal of the present utility model after being pressed together with the guide.

Wherein, each reference sign in the figure:

100. a first wire pressing assembly; 110. a first wire pressing part; 111. a first platen; 120. a first handle portion; 130. a return spring; 131. resetting the mounting groove; 140. a first limiting shaft; 150. the second arc-shaped limit groove;

200. A second wire pressing assembly; 210. a second wire pressing part; 211. a second pressing plate; 212. a cover plate; 213. perforating; 220. a second handle portion; 240. the first arc-shaped limit groove; 250. the second limiting shaft;

300. A traction groove; 301. a first inclined traction table; 302. a second inclined traction table; 310. a wire pressing member; 310a, a tooth pressing group; 311. a wire pressing end; 312. a wire pressing block; 320. a positioning seat; 321. a wire pressing cavity; 322. a guide groove; 323. positioning holes;

400. A terminal; 401. a clamping groove; 410. and (5) conducting wires.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, referring to fig. 1-6, a crimping tool is provided that includes a first crimping assembly 100 and a second crimping assembly 200.

Referring to fig. 1 and 2, the first crimping assembly 100 includes a first crimping portion 110 and a first handle portion 120 connected. The second crimp assembly 200 includes a second crimp portion 210 and a second handle portion 220.

The first wire pressing portion 110 is rotatably connected to the second wire pressing portion 210.

Referring to fig. 3-5, the first wire pressing portion 110 and the second wire pressing portion 210 are each annularly and uniformly provided with a plurality of traction grooves 300 around the center thereof, and each traction groove 300 is slidably provided with a wire pressing member 310. The wire pressing members 310 are close to each other at one end thereof, and each wire pressing end 311 is convexly provided with at least one wire pressing block 312, and a wire pressing cavity 321 is formed between the wire pressing blocks 312 of the plurality of wire pressing members 310.

Referring to fig. 3-5, when the first handle portion 120 and the second handle portion 220 are pressed to approach each other, the first pressing portion 110 and the second pressing portion 210 rotate relatively and pull the pressing blocks 312 of the pressing members 310 to approach each other through the pulling grooves 300, so as to press the terminals 400 located in the pressing cavities 321 to be connected with the wires 410. When the first handle portion 120 and the second handle portion 220 are away from each other, the first wire pressing portion 110 and the second wire pressing portion 210 rotate relatively and respectively pull the wire pressing blocks 312 of the wire pressing members 310 away from each other through the plurality of pulling grooves 300, so that the wire pressing blocks 312 of the wire pressing members 310 return to the initial positions, and the terminal 400 and the wire 410 to be pressed are inserted into the wire pressing cavity 321 for the next wire pressing.

Compared with the prior art, the wire pressing pliers provided by the embodiment of the utility model have one or more of the following technical schemes:

Referring to fig. 3-5, when pressing the wire, the user applies force to press the first handle portion 120 and the second handle portion 220 to get close to each other (i.e. fold the first handle portion 120 and the second handle portion 220), so as to drive the first wire pressing portion 110 and the second wire pressing portion 210 to rotate relatively and pull the wire pressing blocks 312 of the wire pressing members 310 to get close to each other through the plurality of pulling grooves 300, so that the plurality of wire pressing blocks 312 press the terminal 400 and the wire 410 in the wire pressing cavity 321, and the outer wall of the terminal 400 presses the outer wall of the terminal 400 through the wire pressing blocks 312, so that the clamping groove 401 is recessed to form firm press fit (press fit clamping) with the wire 410, thereby firmly connecting the terminal 400 and the wire 410 and bearing a large pulling force, and being difficult to loose or separate between the terminal 400 and the wire 410, and being firmly connected.

Further, referring to fig. 5, the plurality of pressing members 310 form at least two pairs of oppositely disposed pressing tooth sets 310a, and the pressing blocks 312 of two pressing members 310 of one pressing tooth set 310a are offset from the pressing blocks 312 of two pressing members 310 of the other pressing tooth set 310 a. Specifically, referring to fig. 5 and 6, the outer walls of the terminals 400 located in the wire pressing cavities 321 are pressed by two groups of wire pressing blocks 312 arranged in a staggered manner, so that the clamping grooves 401 are formed in the recessed manner on the outer walls of two adjacent sides of the terminals 400 in a staggered manner, so that the terminals 400 are connected with the wires 410 more firmly, and can bear larger tensile force without loosening or separating. In addition, compared with the mode of extruding the outer walls of the terminals 400 at the same cross section to form the clamping grooves 401, the mode of extruding the outer walls of the two adjacent sides of the terminals 400 to form the clamping grooves 401 is not easy to cause the outer walls of the terminals 400 to be extruded and damaged due to overlarge stress at the same cross section, so that the quality of the line pressing of the terminals is ensured.

Further, referring to fig. 5 and 6, two pressing members 310 of one pressing tooth set 310a are respectively provided with two pressing blocks 312 in a protruding manner, two pressing members 310 of the other pressing tooth set 310a are respectively provided with three pressing blocks 312 in a protruding manner, and the outer walls of the terminals 400 in the pressing cavities 321 are pressed by the two pressing blocks 312 arranged in a staggered manner, so that two clamping grooves 401 and three clamping grooves 401 are respectively formed in a staggered manner in the outer walls of two adjacent sides of the terminals 400 in a recessed manner, and the terminals 400 are connected with the wires 410 more firmly and can bear larger pulling force without loosening or separating.

In another embodiment of the present utility model, referring to fig. 3 to 5, the traction groove 300 is provided with a first inclined traction table 301 located at the outer side and a second inclined traction table 302 located at the inner side, and the traction grooves 300 in the first wire pressing part 110 and the second wire pressing part 210 are disposed in opposite directions. When the user presses the first handle portion 120 and the second handle portion 220 to get close to each other, the first wire pressing portion 110 and the second wire pressing portion 210 rotate relatively around their centers and pull (push) the wire pressing blocks 312 of the wire pressing members 310 to get close to the wire pressing cavity 321 through the first inclined pulling platform 301, so that the wire pressing blocks 312 of the plurality of wire pressing members 310 gather towards the wire pressing cavity 321 to press the terminal 400 located in the wire pressing cavity 321 to be connected with the wire 410 in a pressing manner, so that the terminal 400 is connected with the wire 410 in a pressing manner, and wire pressing is completed. When the first handle portion 120 and the second handle portion 220 are far away from each other (i.e. the first handle portion 120 and the second handle portion 220 are unfolded), the first wire pressing portion 110 and the second wire pressing portion 210 relatively rotate around their centers and pull the wire pressing blocks 312 of the wire pressing members 310 away from the wire pressing cavity 321 by the second inclined pulling platform 302, so that the wire pressing blocks 312 of the plurality of wire pressing members 310 return to the initial positions, so that the terminal 400 and the wire 410 to be pressed are inserted into the wire pressing cavity 321 for the next wire pressing.

Further, referring to fig. 3-5, a positioning seat 320 is disposed at the center of the first wire pressing portion 110 and the second wire pressing portion 210, a wire pressing cavity 321 is disposed at the center of the positioning seat 320, a plurality of guiding grooves 322 are uniformly distributed on the outer wall of the positioning seat 320, the guiding grooves 322 are communicated with the wire pressing cavity 321, one end of the wire pressing member 310 is located in the traction groove 300, and the other end of the wire pressing member 310 is slidably connected to the guiding grooves 322 and can move along the guiding grooves 322. When the user presses the first handle portion 120 and the second handle portion 220 toward each other, the plurality of wire guides 310 move toward each other along the plurality of guide grooves 322, so that the wire guide blocks 312 of the plurality of wire guides 310 move toward the wire guide cavity 321 toward each other, and the terminal 400 and the wire 410 are pressed into the wire guide cavity 321. The moving direction of the wire 310 is guided by the guide groove 322, so that the moving track of the wire 310 is stable and does not deviate.

Further, referring to fig. 3-5, a coaxially disposed positioning hole 323 is provided at the bottom of the wire pressing cavity 321, the positioning hole 323 is used for positioning the terminal 400, and the terminal 400 to be pressed is inserted into the positioning hole 323 from the wire pressing cavity 321, that is, the terminal 400 and the wire 410 are placed at a proper position in the wire pressing cavity 321, so that the wire pressing can be started, and the operation is convenient.

In another embodiment of the present utility model, referring to fig. 1-3, a return spring 130 is disposed between the first wire pressing assembly 100 and the second wire pressing assembly 200, and the return spring 130 is used to urge the first handle portion 120 and the second handle portion 220 away from each other. Specifically, when the user presses the first handle portion 120 and the second handle portion 220 toward each other during pressing, the return spring 130 is compressed, and after pressing, the user removes the force pressing the first handle portion 120 and the second handle portion 220, and the return spring 130 elastically returns to push the first handle portion 120 and the second handle portion 220 away from each other, so that the first handle portion 120 and the second handle portion 220 return to the non-pressed state (i.e., the initial state).

Referring to fig. 3-5, the first wire pressing portion 110 and the second wire pressing portion 210 are respectively provided with a reset mounting groove 131 at positions close to the first handle portion 120 and the second handle portion 220, the reset spring 130 is mounted in the reset mounting groove 131, and two ends of the reset spring 130 are respectively connected with the first wire pressing portion 110 and the second wire pressing portion 210, so that the installation is convenient.

In another embodiment of the present utility model, referring to fig. 2 to 4, the first wire pressing portion 110 is provided with at least two first limiting shafts 140 around the center thereof, the second wire pressing portion 210 is provided with at least two first arc-shaped limiting grooves 240 around the center thereof, and the two first limiting shafts 140 are respectively disposed through the two first arc-shaped limiting grooves 240. When the first wire pressing part 110 and the second wire pressing part 210 rotate relative to the center thereof, the first limiting shaft 140 slides along the first arc limiting groove 240. During wire pressing, the first wire pressing portion 110 slides to one side along the first arc-shaped limiting groove 240 through the first limiting shaft 140 and rotates forward relative to the second wire pressing portion 210, and during wire pressing release, the first wire pressing portion 110 slides to the other side along the first arc-shaped limiting groove 240 through the first limiting shaft 140 and rotates reversely relative to the second wire pressing portion 210, and is connected with the first arc-shaped limiting groove 240 through the first limiting shaft 140 in a matched manner, so that the first wire pressing portion 110 rotates stably relative to the second wire pressing portion 210.

In another embodiment of the present utility model, referring to fig. 2 to 4, the first pressing part 110 includes two first pressing plates 111 stacked. The traction groove 300 is penetrated through the two first pressing plates 111. The second pressing part 210 includes two second pressing plates 211 and two cover plates 212. The two second pressing plates 211 are respectively stacked on the sides of the two first pressing plates 111 facing away from each other. The traction groove 300 is penetrated and arranged on the two second pressing plates 211. The two cover plates 212 are respectively covered on the sides of the two second pressing plates 211, which are away from each other, and a through hole 213 is arranged in the center of one cover plate 212, the through hole 213 is communicated with the wire pressing cavity 321 and is coaxially arranged with the wire pressing cavity, and the terminal 400 to be pressed passes through the through hole 213 and stretches into the wire pressing cavity 321. The pulling groove 300 is covered by the two second pressing plates 211 to prevent the wire pressing member 310 from being separated from the pulling groove 300, so that the wire pressing member 310 stably moves in the pulling groove 300.

Further, referring to fig. 2 to 4, at least two second pressing plates 211 and two cover plates 212 are disposed around the center of the second pressing line portion 210, at least two second arc-shaped limiting grooves 150 are disposed around the center of the first pressing line portion 110, and two second limiting shafts 250 are disposed through the two second arc-shaped limiting grooves 150 respectively. When the first wire pressing part 110 and the second wire pressing part 210 rotate relative to the center thereof, the second limiting shaft 250 slides along the second arc-shaped limiting groove 150. The second limiting shaft 250 is cooperatively connected with the second arc-shaped limiting groove 150, so that the first wire pressing portion 110 can stably rotate relative to the second wire pressing portion 210.

The rest of the present embodiment is the same as the first embodiment, and the unexplained features in the present embodiment are all explained by the first embodiment, and are not described here again.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. For those skilled in the art, the architecture of the utility model can be flexible and changeable without departing from the concept of the utility model, and serial products can be derived. But a few simple derivatives or substitutions should be construed as falling within the scope of the utility model as defined by the appended claims.

Claims (10)

1. A crimping pliers comprises a first crimping assembly and a second crimping assembly; the first wire pressing assembly comprises a first wire pressing part and a first handle part which are connected; the second wire pressing part is connected with the second handle part; the first line pressing part is rotationally connected with the second line pressing part; the first line pressing part and the second line pressing part are annularly and uniformly distributed with a plurality of traction grooves around the center of the first line pressing part and the second line pressing part, and each traction groove is internally provided with a line pressing piece in a sliding manner; the wire pressing device is characterized in that one end, close to each other, of each wire pressing piece is a wire pressing end, each wire pressing end is convexly provided with at least one wire pressing block, and a wire pressing cavity is formed among the wire pressing blocks of the plurality of wire pressing pieces; when the first handle part and the second handle part are pressed to be close to each other, the first wire pressing part and the second wire pressing part rotate relatively and respectively pull the wire pressing blocks of the wire pressing pieces to be close to each other through the traction grooves, so that the terminals in the wire pressing cavities are pressed to be connected with the wires in a pressing mode; when the first handle part and the second handle part are mutually far away, the first line pressing part and the second line pressing part rotate relatively and respectively pull a plurality of line pressing blocks of the line pressing pieces to be mutually far away through a plurality of traction grooves.

2. The crimping tool as claimed in claim 1, wherein: the plurality of wire pressing pieces form at least two pairs of oppositely arranged tooth pressing groups; the wire pressing blocks of the two wire pressing pieces of one wire pressing tooth group are arranged in a staggered mode with the wire pressing blocks of the two wire pressing pieces of the other wire pressing tooth group.

3. The crimping tool as claimed in claim 2, wherein: two wire pressing blocks are arranged on two wire pressing members of one wire pressing tooth group in a protruding mode, and three wire pressing blocks are arranged on two wire pressing members of the other wire pressing tooth group in a protruding mode.

4. A crimping tool according to any one of claims 1 to 3, wherein: the traction groove is provided with a first inclined traction table positioned at the outer side and a second inclined traction table positioned at the inner side, and the traction grooves in the first line pressing part and the second line pressing part are reversely arranged; when the first handle part and the second handle part are pressed to be close to each other, the first wire pressing part and the second wire pressing part rotate relatively and pull the wire pressing block of the wire pressing piece to be close to the wire pressing cavity through the first inclined traction table so as to press the terminal positioned in the wire pressing cavity to be connected with the wire in a pressing mode; when the first handle part and the second handle part are mutually far away, the first line pressing part and the second line pressing part rotate relatively and pull the line pressing block of the line pressing piece to be far away from the line pressing cavity through the second inclined traction table.

5. The crimping tool as claimed in claim 4, wherein: the center of first line ball portion with a locating seat is worn to be equipped with in the center of second line ball portion, the line ball chamber is located the center of locating seat, the outer wall annular equipartition of locating seat has a plurality of intercommunication the guide way in line ball chamber, the one end of line ball spare is located in the traction groove, the other end sliding connection of line ball spare in the guide way and can follow the guide way removes.

6. A crimping tool according to any one of claims 1 to 3, wherein: the bottom of line ball chamber is equipped with the locating hole of coaxial setting, the locating hole is used for the location terminal.

7. A crimping tool according to any one of claims 1 to 3, wherein: and a reset spring is arranged between the first line pressing assembly and the second line pressing assembly and is used for driving the first handle part and the second handle part to be far away from each other.

8. A crimping tool according to any one of claims 1 to 3, wherein: the first wire pressing part is provided with at least two first limiting shafts around the center of the first wire pressing part, the second wire pressing part is provided with at least two first arc limiting grooves around the center of the second wire pressing part, and the two first limiting shafts are respectively penetrated through the two first arc limiting grooves; when the first line pressing part and the second line pressing part rotate relative to the center of the first line pressing part, the first limiting shaft slides along the first arc limiting groove.

9. A crimping tool according to any one of claims 1 to 3, wherein: the first pressing line part comprises two first pressing plates which are overlapped; the traction groove is arranged on the two first pressing plates in a penetrating way; the second pressing line part comprises two second pressing plates and two cover plates; the two second pressing plates are respectively overlapped on one sides of the two first pressing plates, which are away from each other; the traction groove is arranged on the two second pressing plates in a penetrating way; the two cover plates are respectively covered on one sides of the two second pressing plates, which are away from each other, and a perforation is arranged in the center of one cover plate in a penetrating way, and the perforation is communicated with the line pressing cavity and is coaxially arranged with the line pressing cavity.

10. The crimping tool of claim 9, wherein: the at least two second limiting shafts penetrate through the two second pressing plates and the two cover plates around the center of the second pressing line part, the first pressing line part is provided with at least two second arc-shaped limiting grooves around the center of the first pressing line part, and the two second limiting shafts penetrate through the two second arc-shaped limiting grooves respectively; when the first line pressing part and the second line pressing part rotate relative to the center of the first line pressing part, the second limiting shaft slides along the second arc limiting groove.