An adjustable pressure wire forceps and method of use

Abstract

The application relates to an adjustable crimping pliers and a using method thereof, and relates to the technical field of crimping pliers, which comprises an upper die plate, a lower die plate, an upper sliding plate, a lower sliding plate, a crimping mechanism, an adjusting mechanism and a transmission mechanism; the upper die plate is fixedly connected to the lower die plate; first sliding grooves are formed in the upper die plate and the lower die plate; first limiting sliding blocks are arranged on the upper sliding plate and the lower sliding plate and are slidably connected in the first sliding grooves; the crimping mechanism comprises a first crimping disc, a second crimping disc, a first rotating shaft and a second rotating shaft; a plurality of crimping grooves with different sizes are formed in the first crimping disc and the second crimping disc; the adjusting mechanism is used for adjusting and limiting the rotation of the first crimping disc and the second crimping disc; and the transmission mechanism is used for controlling the movement of the first crimping disc. In the crimping process, the first crimping disc approaches the second crimping disc along the direction of the first sliding groove, and the two crimping grooves are in a parallel state, so that the force on each part of the terminal is more uniform.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crimping pliers, in particular to an adjustable crimping plier and a using method thereof. BACKGROUND

[0002] The crimping plier is an electrical tool that connects the wire core and the terminal by mechanical assistance and human force, usually also has the functions of cutting and stripping the wire, and has the characteristics of convenient use, durability and reliability.

[0003] At present, the Chinese invention patent application with the publication date of May 2, 2023 and the publication number of CN116053880A proposes a cable crimping plier for power construction, which comprises a plier body, a first rotating shaft is fixedly installed on the inner side of the plier body, a connecting block is fixedly installed on the outer side of the first rotating shaft, and a crimping groove is formed on the outer side of the connecting block; a first telescopic rod is fixedly installed at the tail end of the first telescopic rod, a rotating block is nested in the inner side of the rotating block, and a third rotating shaft is fixedly installed in the inner side of the plier body.

[0004] The cable crimping plier for power construction has multiple crimping grooves with different diameters, which can crimp cables with different diameters, avoid the damage and loss of parts caused by disassembling the plier head, and has the functions of stripping and cutting the cable, so as to achieve multiple effects. The second telescopic rod is provided with a clamping and limiting structure to prevent the inner side of the cutter from causing harm to the human body when not in use, and the limiting structure can prevent the two ends of the second telescopic rod from being too close to each other and causing injury to the user.

[0005] However, in the related art, when the crimping plier is used for crimping, the two connecting blocks responsible for crimping rotate around the two second rotating shafts, and the distance between the position away from the second rotating shaft and the position close to the second rotating shaft is different when the connecting blocks are close to each other, which will cause the position close to the second rotating shaft to exert greater pressure on the terminal, resulting in uneven force on each part of the terminal and poor crimping effect of the crimping plier. In addition, the uneven reaction force exerted by the terminal on each part of the connecting block will cause the connecting block to rotate during crimping, and the sliding rod used to fix the connecting block is more prone to deformation. SUMMARY

[0006] In order to make the terminal force more uniform during crimping, the present application provides an adjustable crimping plier and a using method thereof.

[0007] In a first aspect, the present application provides an adjustable crimping plier, which comprises an upper jaw plate, a lower jaw plate, an upper sliding plate, a lower sliding plate, a crimping mechanism, an adjusting mechanism and a transmission mechanism.

[0008] The lower die plate is fixedly connected with a first connecting shaft and a second connecting shaft, the upper die plate is fixedly connected with one end of the first connecting shaft and one end of the second connecting shaft away from the lower die plate, a plurality of first sliding grooves are formed in the upper die plate and the lower die plate, first limiting sliding blocks are arranged on the upper sliding plate and the lower sliding plate, the lower sliding plate is slidably connected with the lower die plate through the first sliding grooves and the first limiting sliding blocks, and the upper sliding plate is slidably connected with the upper die plate through the first sliding grooves and the first limiting sliding blocks.

[0009] The pressing mechanism comprises a first pressing disc, a second pressing disc, a first rotating shaft and a second rotating shaft, a plurality of pressing grooves of different sizes and a plurality of abutting angles are formed in the first pressing disc and the second pressing disc, the first rotating shaft penetrates through the first pressing disc and is fixedly connected with the first pressing disc, two ends of the first rotating shaft are rotatably connected with the upper sliding plate and the lower sliding plate respectively, the second rotating shaft penetrates through the second pressing disc and is fixedly connected with the second pressing disc, two ends of the second rotating shaft are rotatably connected with the upper die plate and the lower die plate respectively, and the first pressing disc abuts against the second pressing disc.

[0010] The adjusting mechanism is provided in two groups and is used for adjusting and limiting the rotation of the first pressing disc and the second pressing disc, and the transmission mechanism is used for controlling the movement of the upper sliding plate and the lower sliding plate.

[0011] When the pressing operation is performed, the user can select a pressing groove of a proper size according to the type of the terminal, then release the limitation of the adjusting mechanism, rotate the first pressing disc and the second pressing disc by using the adjusting mechanism to make the pressing grooves of the same size face each other, limit the rotation of the first pressing disc and the second pressing disc by using the adjusting mechanism, then connect the wire with the terminal and place the terminal into the pressing groove on the second pressing disc, push the upper sliding plate and the lower sliding plate to be close to the second pressing disc by using the transmission mechanism, drive the first limiting sliding blocks to slide in the first sliding grooves by the upper sliding plate and the lower sliding plate, thereby limiting the upper sliding plate and the lower sliding plate from being close to the second pressing disc along the direction of the first sliding grooves, drive the first pressing disc to be close to the second pressing disc by the first rotating shaft, and continuously apply pressure to the terminal by the pressing groove on the first pressing disc after the pressing groove contacts the terminal, until the first pressing disc abuts against the second pressing disc, and the compression and fixation of the terminal and the wire are completed.

[0012] The technical scheme has at least the following technical effects:

[0013] In the pressing process, the first pressing disc is close to the second pressing disc along the direction of the first sliding grooves, and the bottoms of the two pressing grooves are always in a parallel state, thereby avoiding the uneven application of pressure to each part of the terminal caused by the different distances of the symmetrical parts of the pressing groove, and reducing the rotating tendency of the first pressing disc and the second pressing disc caused by the uneven application of the reaction force of the wire terminal to each part of the pressing groove.

[0014] In some embodiments, the transmission mechanism comprises a first transmission arm, a second transmission arm, a first connecting rivet, a first connecting plate and a second connecting plate, the first transmission arm and the second transmission arm are arranged between the upper jaw plate and the lower jaw plate, the first connecting shaft passes through and is rotatably connected with the first transmission arm, the second connecting shaft passes through and is rotatably connected with the second transmission arm, the lower sliding plate is further fixedly connected with a third connecting shaft and a fourth connecting shaft, one end of the third connecting shaft and one end of the fourth connecting shaft away from the lower sliding plate are fixedly connected with the upper sliding plate, one end of the first connecting plate is sleeved on the third connecting shaft and is rotatably connected with the third connecting shaft, the other end of the first connecting plate is drivingly connected with the first transmission arm through the first connecting rivet, one end of the second connecting plate is sleeved on the fourth connecting shaft and is rotatably connected with the fourth connecting shaft, the other end of the second connecting plate is drivingly connected with the second transmission arm through the first connecting rivet, and the first transmission arm and the second transmission arm are both provided with a handle.

[0015] In some embodiments, the first pressing disc and the second pressing disc are both provided with a plurality of gear marks, and the upper sliding plate and the upper jaw plate are both provided with an observation hole.

[0016] In some embodiments, the adjusting mechanism comprises a positioning assembly and a limiting assembly, the positioning assembly comprises a shell, a first spring and a spring plate, the lower jaw plate is provided with a second sliding groove, the shell is fixedly connected with the lower sliding plate and slidingly connected in the second sliding groove, the spring plate is slidingly connected in the shell, the spring plate is provided with a second limiting sliding block, the shell is provided with a third sliding groove on the inner circumferential surface, the second limiting sliding block is slidingly connected in the third sliding groove, one end of the first rotating shaft passes through and is rotatably connected with the spring plate and the shell, the first spring is sleeved on the first rotating shaft, one end of the first spring is in abutment with the shell, the other end of the first spring is in abutment with the spring plate, one side of the spring plate close to the first pressing disc is provided with a plurality of positioning blocks, one side of the first pressing disc close to the spring plate is provided with two positioning protrusions, the positioning protrusions are in abutment with the positioning blocks, and one end of the first rotating shaft away from the upper sliding plate is provided with a knob.

[0017] In some embodiments, the limiting assembly is respectively arranged between the upper and lower tooth plates and between the upper and lower sliding plates, the limiting assembly comprises a limiting pin, a second spring, a transmission block and a fixing column, the limiting pin is provided with an abutting groove, the first and second pressing discs are abutted with the limiting pin through an abutting angle, the upper sliding plate and the upper tooth plate are both provided with a fourth sliding groove, one end of the transmission block is fixedly connected with the limiting pin, the other end of the transmission block passes through the fourth sliding groove, the end of the transmission block away from the limiting pin is provided with a plurality of anti-skid grooves, one end of the fixing column is fixedly connected with the lower tooth plate, the other end of the fixing column is fixedly connected with the upper tooth plate, the limiting pin is provided with a fifth sliding groove, the fixing column passes through the fifth sliding groove and is slidably connected with the limiting pin, the fixing column and the limiting pin are both provided with a first spring shaft, the second spring is sleeved on the first spring shaft, one end of the second spring is abutted with the fixing column, the other end of the second spring is abutted with the limiting pin.

[0018] In some embodiments, the first transmission arm is provided with a cutter seat, the second transmission arm is provided with a pressing plate, the cutter seat is provided with a blade and a fixing mechanism, the fixing mechanism is used for fixing the blade on the cutter seat, the pressing plate is provided with a cutting groove, and one end of the cutter seat away from the first transmission arm is abutted with one end of the pressing plate away from the second transmission arm.

[0019] In some embodiments, the fixing mechanism comprises a fixing plate and a fixing bolt, the cutter seat is provided with a mounting groove, the cutter seat, the fixing plate and the blade are all provided with threads, and the blade and the fixing plate are fixedly connected in the mounting groove through the fixing bolt, one side of the blade is abutted with the cutter seat, and the other side of the blade is abutted with the fixing plate.

[0020] In some embodiments, the first transmission arm and the second transmission arm are both provided with a second spring shaft, the second spring shaft is sleeved with a third spring, one end of the third spring is abutted with the first transmission arm, and the other end of the third spring is abutted with the second transmission arm.

[0021] In some embodiments, the cutter seat is provided with a locking mechanism, the locking mechanism comprises a second connecting rivet, a third connecting plate and a third connecting rivet, one end of the third connecting plate is rotatably connected with the cutter seat through the second connecting rivet, the other end of the third connecting plate is rotatably connected with the third connecting rivet, the pressing plate is provided with a locking groove, and the third connecting rivet is clamped in the locking groove.

[0022] In some embodiments, the knife seat is provided with a locking mechanism, the locking mechanism comprising a second connecting rivet, a third connecting plate and a third connecting rivet, one end of the third connecting plate being rotatably connected to the knife seat through the second connecting rivet, the other end of the third connecting plate being rotatably connected to the third connecting rivet, the wire pressing plate being provided with a locking slot, and the third connecting rivet being clamped in the locking slot.

[0023] In a second aspect, the present application provides a method for using the adjustable wire pressing pliers, the method comprising the following steps:

[0024] S1: hold the handle on the first transmission arm and the handle on the second transmission arm, rotate the third connecting rivet, and move the third connecting rivet out of the locking slot to open the wire pressing pliers, then release the handle, the third spring pushes the first transmission arm and the second transmission arm away from each other, the first transmission arm pushes the first connecting rivet to rotate around the first connecting shaft, the first connecting rivet pushes the third connecting shaft away from the second wire pressing disc through the first connecting plate, similarly, the second transmission arm drives the fourth connecting shaft away from the second wire pressing disc, the third connecting shaft and the fourth connecting shaft jointly push the upper sliding plate and the lower sliding plate away from the second wire pressing disc, each first limiting sliding block slides in the first sliding groove, so that the upper sliding plate and the lower sliding plate move away from the second wire pressing disc along the direction of the first sliding groove, the first wire pressing disc moves away from the first wire pressing disc in the same direction under the drive of the first rotating shaft until it moves to the top, at this time, the wire pressing pliers are in the wire pressing standby state;

[0025] S2: when it is necessary to cut the wire, place the wire in the wire cutting slot, hold the handle, and the first transmission arm and the second transmission arm push the knife seat and the wire pressing plate to move close to each other, the blade cooperates with the wire cutting slot to cut off the wire, then release the handle to make the wire pressing pliers in the wire pressing standby state;

[0026] S3: Determine the type of wire pressing groove to be used according to the wire pressing material, push the transmission block to slide inside the fourth slide groove to move it away from the first wire pressing disk, the transmission block drives the limit pin away from the first wire pressing disk, the limit pin and the fixed column compress the second spring, the abutment angle and the abutment groove are separated so that the first wire pressing disk can rotate freely, then face the upper tooth plate and turn the knob clockwise, the knob drives the first rotating shaft and the first wire pressing disk to rotate clockwise, the positioning protrusion applies a thrust perpendicular to the inclined surface to the positioning block through the inclined surface on the positioning block, the inclined surface converts this part of the thrust into a thrust perpendicular to the first rotating shaft and a thrust parallel to the first rotating shaft, the second limit slider and the third slide groove prevent the spring plate from rotating, and the spring plate moves downward inside the shell under the thrust parallel to the first rotating shaft. And compress the first spring. After the positioning protrusion rotates a certain angle, the positioning protrusion separates from the positioning block, and the first spring pushes the spring plate to move up, and the positioning protrusion contacts the next positioning block. At this time, the user can feel the change in resistance of turning the knob, indicating that the first wire pressing disc has rotated one gear. The user can observe the mark on the gear mark ring through the observation port and repeat the above process so that the mark corresponds to the wire pressing groove model to be used, and then turn the knob counterclockwise until it cannot be rotated. The positioning block will block the positioning protrusion from rotating, and then release the transmission block. The second spring pushes the limit pin back to the initial position, and the abutment angle abuts the abutment groove to lock the first wire pressing disc. At this time, it indicates that the gear adjustment of the first wire pressing disc is completed, and the gear adjustment of the second wire pressing disc can be performed in the same way.

[0027] S4: Connect the terminal to the wire, then place the terminal into the wire pressing groove on the second wire pressing disc, then hold the handle tightly, and the first transmission arm and the second transmission arm drive the upper sliding plate and the lower sliding plate to approach the second wire pressing disc in a direction parallel to the first sliding groove. The wire pressing groove on the first wire pressing disc abuts against the terminal and continuously applies pressure until the first wire pressing disc abuts against the second wire pressing disc, completing the compression and fixation of the terminal and the wire, then release the handle and remove the terminal;

[0028] S5: Grip the handle until the knife holder contacts the crimping plate, then rotate the third connecting rivet into the locking groove. Release the handle, and the spring pushes the first transmission arm and the second transmission arm away from each other. The knife holder and the crimping plate move a short distance apart, so that the third connecting rivet is clamped in the locking groove. At this time, the crimping pliers is in a locked state.

[0029] S6: When the blade needs to be replaced, unscrew the fixing bolt, then remove the fixing plate and blade from the installation slot, place the new blade into the installation slot, cover the fixing plate, and screw back the fixing bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0031] Figure 1 The overall structure of the adjustable pressure wire clamp provided by the embodiment of the present application Figure 1 ;

[0032] Figure 2 The enlarged view of part A in Figure 1 ;

[0033] Figure 3 The overall structure of the adjustable pressure wire clamp provided by the embodiment of the present application Figure 2 ;

[0034] Figure 4 The internal structure of the adjustable pressure wire clamp provided by the embodiment of the present application

[0035] Figure 5 The enlarged view of part B in Figure 4 ;

[0036] Figure 6 The enlarged view of part C in Figure 4 ;

[0037] Figure 7 The enlarged view of part D in Figure 4 ;

[0038] Figure 8 The overall structure of the limiting assembly

[0039] Figure 9 The enlarged view of part E in Figure 8 ;

[0040] Figure 10 The overall structure of the positioning assembly and the first wire pressing disc

[0041] Figure 11 The enlarged view of part F in Figure 10 ;

[0042] Figure 12 The exploded structure of the positioning assembly and the first wire pressing disc

[0043] Figure 13 The exploded structure of the shell and the spring plate

[0044] Figure 14 The exploded structure of the knife holder and the wire pressing plate

[0045] In the drawings:

[0046] 1, upper die plate; 11, first sliding groove; 2, lower die plate; 21, first connecting shaft; 22, second connecting shaft; 23, second sliding groove; 3, upper sliding plate; 31, first limiting sliding block; 32, observation port; 33, fourth sliding groove; 4, lower sliding plate; 41, third connecting shaft; 42, fourth connecting shaft; 51, first wire pressing disc; 511, wire pressing groove; 512, abutting corner; 513, gear mark ring; 514, positioning protrusion; 52, second wire pressing disc; 53, first rotating shaft; 531, knob; 54, second rotating shaft; 61, positioning assembly; 611, shell; 6111, third sliding groove; 612, first spring; 613, spring plate; 6131, second limiting sliding block; 6132, positioning block; 621, limiting pin; 6211, abutting groove; 6212, fifth sliding groove; 622, second spring; 623, transmission block; 6231, anti-skid groove; 624, fixed column; 6241, first spring shaft; 71, first transmission arm; 711, handle; 712, knife seat; 7121, blade; 7122, mounting groove; 713, second spring shaft; 7131, third spring; 72, second transmission arm; 721, wire pressing plate; 7211, wire cutting groove; 7212, locking groove; 73, first connecting rivet; 74, first connecting plate; 75, second connecting plate; 8, fixing mechanism; 81, fixing plate; 82, fixing bolt; 9, locking mechanism; 91, second connecting rivet; 92, third connecting plate; 93, third connecting rivet. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and not to limit the present application.

[0048] Unless otherwise defined, 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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The description and the drawings of this application together with the above disclosure describe and demonstrate a preferred embodiment. The terminology includes the phrase "comprising", "having" as well as their derivatives, which only mean "including", "possessing".

[0049] For the prior art, when the crimping pliers are performing the crimping operation, the two connecting blocks responsible for crimping rotate around two second rotating shafts, the distance between the position of the connecting block away from the second rotating shaft and the position of the connecting block close to the second rotating shaft is different when the connecting blocks are close to each other, which will cause that the closer to the position of the second rotating shaft, the greater the pressure applied to the wire terminal, and the force on each part of the wire terminal is uneven, resulting in poor crimping effect of the crimping pliers, and the sliding rod for fixing the connecting block is more prone to deformation due to the uneven reaction force applied by the wire terminal to each part of the connecting block.

[0050] Based on this, in order to make the terminal force more uniform during crimping, the embodiments of the present application provide the following solutions.

[0051] Embodiment 1: Please refer to Figures 1 to 13 The adjustable crimping pliers provided by the embodiments of the present application include an upper jaw plate 1, a lower jaw plate 2, an upper sliding plate 3, a lower sliding plate 4, a crimping mechanism, an adjusting mechanism 6, and a transmission mechanism.

[0052] Referring to Figures 1 to 13 The first connecting shaft 21 and the second connecting shaft 22 are fixedly connected to the lower jaw plate 2, and the upper jaw plate 1 is fixedly connected to the end of the first connecting shaft 21 away from the lower jaw plate 2 and the end of the second connecting shaft 22 away from the lower jaw plate 2. A plurality of first sliding grooves 11 are formed in the upper jaw plate 1 and the lower jaw plate 2, and a first limiting sliding block 31 is arranged on the upper sliding plate 3 and the lower sliding plate 4. The lower sliding plate 4 is slidably connected to the lower jaw plate 2 through the first sliding grooves 11 and the first limiting sliding block 31, and the upper sliding plate 3 is slidably connected to the upper jaw plate 1 through the first sliding grooves 11 and the first limiting sliding block 31. The crimping mechanism includes a first crimping disc 51, a second crimping disc 52, a first rotating shaft 53, and a second rotating shaft 54. A plurality of crimping grooves 511 of different sizes and a plurality of abutting corners 512 are formed in the first crimping disc 51 and the second crimping disc 52. The first rotating shaft 53 penetrates through the first crimping disc 51 and is fixedly connected to the first crimping disc 51. The two ends of the first rotating shaft 53 are rotatably connected to the upper sliding plate 3 and the lower sliding plate 4, respectively. The second rotating shaft 54 penetrates through the second crimping disc 52 and is fixedly connected to the second crimping disc 52. The two ends of the second rotating shaft 54 are rotatably connected to the upper jaw plate 1 and the lower jaw plate 2, respectively. The first crimping disc 51 abuts against the second crimping disc 52.

[0053] The transmission mechanism comprises a first transmission arm 71, a second transmission arm 72, a first connecting rivet 73, a first connecting plate 74 and a second connecting plate 75, the first transmission arm 71 and the second transmission arm 72 are arranged between the upper tooth plate 1 and the lower tooth plate 2, the first connecting shaft 21 penetrates through the first transmission arm 71 and is rotationally connected with the first transmission arm 71, the second connecting shaft 22 penetrates through the second transmission arm 72 and is rotationally connected with the second transmission arm 72, the lower sliding plate 4 is further fixedly connected with a third connecting shaft 41 and a fourth connecting shaft 42, one end of the third connecting shaft 41 away from the lower sliding plate 4 and one end of the fourth connecting shaft 42 away from the lower sliding plate 4 are fixedly connected with the upper sliding plate 3, one end of the first connecting plate 74 is sleeved on the third connecting shaft 41 and is rotationally connected with the third connecting shaft 41, the other end of the first connecting plate 74 is drivingly connected with the first transmission arm 71 through the first connecting rivet 73, one end of the second connecting plate 75 is sleeved on the fourth connecting shaft 42 and is rotationally connected with the fourth connecting shaft 42, the other end of the second connecting plate 75 is drivingly connected with the second transmission arm 72 through the first connecting rivet 73, and handles 711 are arranged on the first transmission arm 71 and the second transmission arm 72;

[0054] The adjusting mechanism 6 comprises a positioning assembly 61 and a limiting assembly, the positioning assembly 61 comprises a shell 611, a first spring 612 and a spring plate 613, the lower tooth plate 2 is provided with a second sliding groove 23, the shell 611 is fixedly connected on the lower sliding plate 4 and is slidingly connected in the second sliding groove 23, the spring plate 613 is slidingly connected in the shell 611, the spring plate 613 is provided with a second limiting sliding block 6131, a third sliding groove 6111 is formed in the inner circumferential surface of the shell 611, the second limiting sliding block 6131 is slidingly connected in the third sliding groove 6111, one end of the first rotating shaft 53 penetrates through the spring plate 613 and the shell 611 and is rotationally connected with the spring plate 613 and the shell 611, the first spring 612 is sleeved on the first rotating shaft 53, one end of the first spring 612 abuts against the shell 611, the other end of the first spring 612 abuts against the spring plate 613, one side of the spring plate 613 close to the first line pressing disc 51 is provided with a plurality of positioning blocks 6132, one side of the first line pressing disc 51 close to the spring plate 613 is provided with two positioning protrusions 514, the positioning protrusions 514 abut against the positioning blocks 6132, and one end of the first rotating shaft 53 away from the upper sliding plate 3 is provided with a rotary knob 531;

[0055] The limiting assembly is respectively arranged between the upper tooth plate 1 and the lower tooth plate 2 and between the upper sliding plate 3 and the lower sliding plate 4, and the limiting assembly comprises a limiting pin 621, a second spring 622, a transmission block 623 and a fixed column 624, the limiting pin 621 is provided with an abutting groove 6211, the first pressing disc 51 and the second pressing disc 52 are abutted with the limiting pin 621 through the abutting angle 512, the upper sliding plate 3 and the upper tooth plate 1 are provided with a fourth sliding groove 33, one end of the transmission block 623 is fixedly connected with the limiting pin 621, the other end of the transmission block 623 passes through the fourth sliding groove 33, a plurality of anti-skid grooves 6231 are formed in the end of the transmission block 623 away from the limiting pin 621, one end of the fixed column 624 is fixedly connected with the lower tooth plate 2, the other end of the fixed column 624 is fixedly connected with the upper tooth plate 1, the limiting pin 621 is provided with a fifth sliding groove 6212, the fixed column 624 passes through the fifth sliding groove 6212 and is slidably connected with the limiting pin 621, the first spring shaft 6241 is arranged on the fixed column 624 and the limiting pin 621, the second spring 622 is sleeved on the first spring shaft 6241, one end of the second spring 622 abuts against the fixed column 624, and the other end of the second spring 622 abuts against the limiting pin 621.

[0056] As can be seen from the above, when the wire pressing pliers are used, the user can open the handle 711 on the first transmission arm 71 and the handle 711 on the second transmission arm 72, push the first transmission arm 71 and the second transmission arm 72 away from each other, the first transmission arm 71 drives the first connecting rivet 73 to rotate around the first connecting shaft 21, the first connecting rivet 73 drives the third connecting shaft 41 away from the second pressing disc 52 through the first connecting plate 74, and the second transmission arm 72 drives the fourth connecting shaft 42 away from the second pressing disc 52 in the same way, the third connecting shaft 41 and the fourth connecting shaft 42 jointly drive the upper sliding plate 3 and the lower sliding plate 4 away from the second pressing disc 52, each first limiting sliding block 31 slides in the first sliding groove 11, so that the upper sliding plate 3 and the lower sliding plate 4 move away from the second pressing disc 52 along the direction of the first sliding groove 11, and the first pressing disc 51 moves away from the first pressing disc 51 along the same direction under the drive of the first rotating shaft 53 until moving to the top;

[0057] Then push the transmission block 623 inside the fourth sliding groove 33 to slide away from the first wire pressing disc 51, the transmission block 623 drives the limiting pin 621 away from the first wire pressing disc 51, the limiting pin 621 and the fixed column 624 compress the second spring 622, the abutting angle 512 is separated from the abutting groove 6211 so that the first wire pressing disc 51 can rotate freely, then the user can face the upper tooth plate 1 and rotate the knob 531 clockwise, the knob 531 drives the first rotating shaft 53 and the first wire pressing disc 51 to rotate clockwise, the positioning protrusion 514 applies a force perpendicular to the inclined surface on the positioning block 6132 through the inclined surface on the positioning block 6132, the inclined surface converts this part of the force into a force perpendicular to the first rotating shaft 53 and a force parallel to the first rotating shaft 53, the force perpendicular to the first rotating shaft 53 will make the spring plate 613 have a tendency to rotate, the second limiting sliding block 6131 and the third sliding groove 6111 prevent the spring plate 613 from rotating, the spring plate 613 moves downward in the outer shell 611 under the force parallel to the first rotating shaft 53 and compresses the first spring 612, after the positioning protrusion 514 rotates a certain angle, the positioning protrusion 514 is separated from the positioning block 6132, the first spring 612 pushes the spring plate 613 to move upward to the initial position, the positioning protrusion 514 contacts the next positioning block 6132, at this time the user can feel the change of resistance when rotating the knob 531, indicating that the first wire pressing disc 51 has rotated through a gear, the user can repeat the above process until the desired wire pressing groove 511 is adjusted, the user stops rotating the knob 531, the first wire pressing disc 51 will continue to rotate a certain angle under the action of inertia, the user can rotate the knob 531 counterclockwise, the positioning block 6132 will block the positioning protrusion 514, after the knob 531 cannot be rotated, it indicates that the first wire pressing disc 51 has been adjusted to the standard position, then release the transmission block 623, the second spring 622 pushes the limiting pin 621 back to the initial position, the abutting angle 512 abuts with the abutting groove 6211 to lock the first wire pressing disc 51, the positioning mechanism can prevent the user from adjusting the first wire pressing disc 51 to make the position of the first wire pressing disc 51 deviate too much from the standard position, avoid the abutting angle 512 and the abutting groove 6211 cannot normally engage when the limiting pin 621 moves back, thus the gear adjustment of the first wire pressing disc 51 is completed, and the second wire pressing disc 52 can be adjusted in the same way to keep the gears consistent;

[0058] When the crimping is performed, the user can connect the terminal with the wire, place the terminal inside the crimping groove 511 on the second crimping disc 52, and then hold the handle 711. The first transmission arm 71 and the second transmission arm 72 drive the upper sliding plate 3 and the lower sliding plate 4 to move along the direction parallel to the first sliding groove 11 and close to the second crimping disc 52. The crimping groove 511 on the first crimping disc 51 abuts against the terminal and continuously applies pressure. The terminal can apply different sizes of reaction force to each position of the first crimping disc 51 and the second crimping disc 52 due to the shape of the terminal and the placement position, so that the forces on the symmetrical positions of the crimping groove 511 are unbalanced. The first crimping disc 51 and the second crimping disc 52 have a tendency to rotate. As known from the foregoing, the positioning mechanism can block the counterclockwise rotation of the first crimping disc 51 and the second crimping disc 52. The limiting pin 621 can prevent the rotation of the first crimping disc 51 and the second crimping disc 52 by abutting against the groove 6211 and engaging the abutting angle 512, so as to ensure the crimping effect. When the first crimping disc 51 and the second crimping disc 52 abut against each other, the compression and fixation of the terminal and the wire are completed. In this process, the first crimping disc 51 moves along the direction of the first sliding groove 11 and closes to the second crimping disc 52. The bottoms of the two crimping grooves 511 are always in a parallel state, so as to avoid the uneven application of pressure on each part of the terminal due to the different distances of the symmetrical parts of the crimping groove 511, and reduce the tendency of the first crimping disc 51 and the second crimping disc 52 to rotate during crimping due to the uneven application of reaction force by the terminal on each part of the crimping groove 511. Then, the handle 711 is opened to separate the first crimping disc 51 and the second crimping disc 52, and the terminal after crimping is taken out.

[0059] In some embodiments, referring to Figure 1 and Figure 2 , a plurality of gear mark rings 513 are arranged on the first crimping disc 51 and the second crimping disc 52. An observation port 32 is arranged on the upper sliding plate 3 and the upper toothed plate 1.

[0060] In this way, when the user adjusts the gear, the user can observe the gear mark ring 513 opposite to the observation port 32 through the observation port 32. If the mark on the gear mark ring 513 is the same as the model of the terminal to be crimped, it means that the crimping pliers are adjusted to the appropriate gear, and the use of the crimping pliers is facilitated.

[0061] In some embodiments, referring to Figure 1 and Figure 14The first transmission arm 71 is provided with a cutter seat 712, the second transmission arm 72 is provided with a line pressing plate 721, the cutter seat 712 is provided with a cutter 7121 and a fixing mechanism 8, the line pressing plate 721 is provided with a line cutting groove 7211, the end of the cutter seat 712 away from the first transmission arm 71 is in abutment with the end of the line pressing plate 721 away from the second transmission arm 72, the fixing mechanism 8 comprises a fixing plate 81 and a fixing bolt 82, the cutter seat 712 is provided with a mounting groove 7122, the cutter seat 712, the fixing plate 81 and the cutter 7121 are all provided with threads, the cutter 7121 and the fixing plate 81 are fixedly connected in the mounting groove 7122 through the fixing bolt 82, one side of the cutter 7121 is in abutment with the cutter seat 712, the other side of the cutter 7121 is in abutment with the fixing plate 81, the first transmission arm 71 and the second transmission arm 72 are both provided with a second spring shaft 713, the second spring shaft 713 is sleeved with a third spring 7131, one end of the third spring 7131 is in abutment with the first transmission arm 71, the other end of the third spring 7131 is in abutment with the second transmission arm 72, the cutter seat 712 is further provided with a locking mechanism 9, the locking mechanism 9 comprises a second connecting rivet 91, a third connecting plate 92 and a third connecting rivet 93, one end of the third connecting plate 92 is rotatably connected to the cutter seat 712 through the second connecting rivet 91, the other end of the third connecting plate 92 is rotatably connected with the third connecting rivet 93, the line pressing plate 721 is provided with a locking groove 7212, the third connecting rivet 93 is clamped in the locking groove 7212.

[0062] Thus, before the crimping operation, the user can hold the handle 711 on the first transmission arm 71 and the handle 711 on the second transmission arm 72, make the third connecting rivet 93 in a loose state, then rotate the third connecting rivet 93, the third connecting rivet 93 moves out of the locking groove 7212 to open the crimping pliers, then release the handle 711, the third spring 7131 pushes the first transmission arm 71 and the second transmission arm 72 away from each other to make the crimping pliers in a crimping state, which can facilitate the use of the crimping pliers; when the wire needs to be cut in advance, the user can place the wire into the cutting groove 7211, then hold the handle 711, the first transmission arm 71 and the second transmission arm 72 push the knife seat 712 and the crimping plate 721 to approach each other, the blade 7121 cooperates with the cutting groove 7211 to cut the wire, then release the handle 711 to make the crimping pliers return to the crimping state under the action of the third spring 7131; when the blade 7121 is blunt after long-term use, the user can unscrew the fixing bolt 82, then take out the fixed plate 81 and the blade 7121 from the installation groove 7122, then place the new blade 7121 into the installation groove 7122, cover the fixed plate 81 and screw back the fixing bolt 82, which can ensure the long-term work of the crimping pliers; after the use of the crimping pliers, the user can hold the handle 711 until the knife seat 712 and the crimping plate 721 abut, then rotate the third connecting rivet 93 into the locking groove 7212, then release the handle 711, the spring pushes the first transmission arm 71 and the second transmission arm 72 away from each other, the knife seat 712 and the crimping plate 721 are away from each other by a small distance, the third connecting rivet 93 is clamped in the locking groove 7212 to prevent the crimping pliers from further opening, at this time the crimping pliers are in a locked state, which can facilitate the storage of the crimping pliers and prevent the blade 7121 from being exposed to the outside to injure the user.

[0063] Embodiment 2: The application also provides a use method of the adjustable crimping pliers, the use method of the adjustable crimping pliers comprises the following steps:

[0064] S1: hold the handle 711 on the first transmission arm 71 and the handle 711 on the second transmission arm 72 and rotate the third connecting rivet 93, the third connecting rivet 93 moves out of the locking groove 7212 to open the wire clamp, then release the handle 711, the third spring 7131 pushes the first transmission arm 71 and the second transmission arm 72 away from each other, the first transmission arm 71 pushes the first connecting rivet 73 to rotate around the first connecting shaft 21, the first connecting rivet 73 pushes the third connecting shaft 41 away from the second wire disc 52 through the first connecting plate 74, similarly, the second transmission arm 72 drives the fourth connecting shaft 42 away from the second wire disc 52, the third connecting shaft 41 and the fourth connecting shaft 42 jointly push the upper sliding plate 3 and the lower sliding plate 4 away from the second wire disc 52, each first limiting sliding block 31 slides in the first sliding groove 11 to make the upper sliding plate 3 and the lower sliding plate 4 move away from the second wire disc 52 along the direction of the first sliding groove 11, the first wire disc 51 moves away from the first wire disc 51 in the same direction under the drive of the first rotating shaft 53 until it moves to the top, at this time the wire clamp is in the waiting wire pressing state;

[0065] S2: when it is necessary to cut the wire, place the wire into the wire cutting groove 7211, hold the handle 711, the first transmission arm 71 and the second transmission arm 72 push the knife seat 712 and the wire pressing plate 721 to move close to each other, the knife blade 7121 cuts off the wire in cooperation with the wire cutting groove 7211, then release the handle 711 to make the wire clamp in the waiting wire pressing state;

[0066] S3: According to the pressure line material to determine the need to use to pressure line groove 511 model, push the transmission block 623 in the second sliding groove 23 inside the sliding makes it away from the first pressure line disc 51, the transmission block 623 drive limit pin 621 away from the first pressure line disc 51, abutment angle 512 and abutment groove 6211 separate makes the first pressure line disc 51 can rotate freely, then face the upper tooth plate 1 and clockwise rotate knob 531, knob 531 drive the first rotating shaft 53 and the first pressure line disc 51 clockwise rotation, positioning convex 514 through the inclined surface on the positioning block 6132 on the positioning block 6132 exerts a force perpendicular to the inclined surface, the inclined surface will this part of the thrust into the vertical and parallel to the first rotating shaft 53 thrust and thrust, the second limit sliding block 6131 and the fifth sliding groove 6212 prevent the spring plate 613 rotation, spring plate 613 in parallel to the first rotating shaft 53 under the thrust inside the shell 611 and compression second spring 622, to positioning convex 514 rotate a certain angle, positioning convex 514 and positioning block 6132 separate, spring driven spring plate 613 up, positioning convex 514 and the next positioning block 6132 contact, at this time the user can feel the resistance change of rotating knob 531, indicates that the first pressure line disc 51 has turned a gear, the user can observe the mark on the mark ring 513 through the observation port 32, and repeat the above process to make the mark corresponding to the pressure line groove 511 model to be used, then counterclockwise back to the knob 531 until it can't rotate, positioning block 6132 will block the positioning convex 514 back, then release the transmission block 623, the spring drive limit pin 621 back to the initial position, abutment angle 512 and abutment groove 6211 abutment makes the first pressure line disc 51 lock, at this time indicates that the first pressure line disc 51 gear adjustment is completed, the same reason can be carried out gear adjustment on the second pressure line disc 52;

[0067] S4: the terminal and the wire is connected, then put the terminal into the pressure line groove 511 on the second pressure line disc 52, then hold the handle 711, the first transmission arm 71 and the second transmission arm 72 drive the upper sliding plate 3 and the lower sliding plate 4 along the direction parallel to the first sliding groove 11 close to the second pressure line disc 52, the pressure line groove 511 on the first pressure line disc 51 abuts against the terminal and continuously applies pressure, until the first pressure line disc 51 and the second pressure line disc 52 abut, complete the compression and fixation of the terminal and the wire, then release the handle 711 and take out the terminal;

[0068] S5: hold the handle 711 until the tool holder 712 and the pressure line plate 721 abut, then rotate the third connecting rivet 93 to the locking groove 7212, then release the handle 711, the spring pushes the first transmission arm 71 and the second transmission arm 72 away from each other, the tool holder 712 and the pressure line plate 721 away from a small distance makes the third connecting rivet 93 clamping in the locking groove 7212, at this time the pressure line pliers is in the locked state;

[0069] S6: when the blade 7121 needs to be replaced, the fixing bolt 82 is unscrewed, then the fixing plate 81 and the blade 7121 are taken out from the mounting groove 7122, a new blade 7121 is placed into the mounting groove 7122, the fixing plate 81 is covered, and the fixing bolt 82 is screwed back.

[0070] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An adjustable crimping pliers, characterized by: It comprises an upper tooth plate (1), a lower tooth plate (2), an upper sliding plate (3), a lower sliding plate (4), a wire pressing mechanism, an adjustment mechanism (6) and a transmission mechanism; The lower tooth plate (2) is fixedly connected with a first connecting shaft (21) and a second connecting shaft (22); the upper tooth plate (1) is fixedly connected to one end of the first connecting shaft (21) away from the lower tooth plate (2) and one end of the second connecting shaft (22) away from the lower tooth plate (2); a plurality of first sliding grooves (11) are provided on the upper tooth plate (1) and the lower tooth plate (2); the upper sliding plate (3) and the lower sliding plate (4) are provided with a first limiting slider (31); the lower sliding plate (4) is slidably connected to the lower tooth plate (2) through the first sliding groove (11) and the first limiting slider (31); the upper sliding plate (3) is slidably connected to the upper tooth plate (1) through the first sliding groove (11) and the first limiting slider (31); The wire pressing mechanism comprises a first wire pressing disc (51), a second wire pressing disc (52), a first rotating shaft (53) and a second rotating shaft (54); the first wire pressing disc (51) and the second wire pressing disc (52) are both provided with a plurality of wire pressing grooves (511) of different sizes and a plurality of abutment angles (512); the first rotating shaft (53) passes through the first wire pressing disc (51) and is fixedly connected to the first wire pressing disc (51); the two ends of the first rotating shaft (53) are respectively rotatably connected to the upper sliding plate (3) and the lower sliding plate (4); the second rotating shaft (54) passes through the second wire pressing disc (52) and is fixedly connected to the second wire pressing disc (52); the two ends of the second rotating shaft (54) are respectively rotatably connected to the upper tooth plate (1) and the lower tooth plate (2); the first wire pressing disc (51) abuts the second wire pressing disc (52); The regulating mechanism (6) is provided with two groups and is used to regulate and limit the rotation of the first pressing disc (51) and the second pressing disc (52), and the transmission mechanism is used to control the movement of the upper sliding plate (3) and the lower sliding plate (4); The adjusting mechanism (6) includes a positioning component (61) and a limiting component. The positioning component (61) includes a shell (611), a first spring (612) and a spring plate (613). A second slide groove (23) is provided on the lower tooth plate (2). The shell (611) is fixedly connected to the lower sliding plate (4) and is slidably connected inside the second slide groove (23). The spring plate (613) is slidably connected inside the shell (611). A second limiting slider (6131) is provided on the spring plate (613). A third slide groove (6111) is provided on the inner circumference of the shell (611). The second limiting slider (6131) is slidably connected inside the third slide groove (6111). One end of the first rotating shaft (53) passes through The spring plate (613) and the housing (611) are rotatably connected to the spring plate (613) and the housing (611); the first spring (612) is sleeved on the first rotating shaft (53); one end of the first spring (612) abuts against the housing (611); the other end of the first spring (612) abuts against the spring plate (613); a plurality of positioning blocks (6132) are provided on a side of the spring plate (613) close to the first pressure plate (51); two positioning protrusions (514) are provided on a side of the first pressure plate (51) close to the spring plate (613); the positioning protrusions (514) abut against the positioning blocks (6132); and a knob (531) is provided on one end of the first rotating shaft (53) away from the upper sliding plate (3).

2. The adjustable crimping pliers according to claim 1, characterized in that: The transmission mechanism includes a first transmission arm (71), a second transmission arm (72), a first connecting rivet (73), a first connecting plate (74) and a second connecting plate (75), wherein the first transmission arm (71) and the second transmission arm (72) are both arranged between the upper tooth plate (1) and the lower tooth plate (2), the first connecting shaft (21) passes through the first transmission arm (71) and is rotatably connected to the first transmission arm (71), the second connecting shaft (22) passes through the second transmission arm (72) and is rotatably connected to the second transmission arm (72), and the lower sliding plate (4) is also fixedly connected with a third connecting shaft (41) and a fourth connecting shaft (42), wherein the third connecting shaft (41) is away from one end of the lower sliding plate (4) and is connected to the lower sliding plate (4). and one end of the fourth connecting shaft (42) away from the lower sliding plate (4) are fixedly connected to the upper sliding plate (3), one end of the first connecting plate (74) is sleeved on the third connecting shaft (41) and is rotatably connected to the third connecting shaft (41), the other end of the first connecting plate (74) is transmission-connected to the first transmission arm (71) through a first connecting rivet (73), one end of the second connecting plate (75) is sleeved on the fourth connecting shaft (42) and is rotatably connected to the fourth connecting shaft (42), the other end of the second connecting plate (75) is transmission-connected to the second transmission arm (72) through a first connecting rivet (73), and a handle (711) is provided on both the first transmission arm (71) and the second transmission arm (72).

3. The adjustable crimping pliers according to claim 2, characterized in that: The first wire pressing disc (51) and the second wire pressing disc (52) are both provided with a plurality of gear position marking rings (513), and the upper sliding plate (3) and the upper tooth plate (1) are both provided with observation ports (32).

4. The adjustable crimping pliers according to claim 3, characterized in that: The limiting components are respectively arranged between the upper tooth plate (1) and the lower tooth plate (2) and between the upper sliding plate (3) and the lower sliding plate (4), and the limiting components include a limiting pin (621), a second spring (622), a transmission block (623) and a fixing column (624). The limiting pin (621) is provided with an abutting groove (6211), the first pressing disc (51) and the second pressing disc (52) are both abutted with the limiting pin (621) through an abutting angle (512), the upper sliding plate (3) and the upper tooth plate (1) are both provided with a fourth sliding groove (33), one end of the transmission block (623) is fixedly connected to the limiting pin (621), the other end of the transmission block (623) passes through the fourth sliding groove (33), and the transmission block (623) is away from the limiting pin (621). One end of the pin (621) is provided with a plurality of anti-slip grooves (6231), one end of the fixing column (624) is fixedly connected to the lower tooth plate (2), and the other end of the fixing column (624) is fixedly connected to the upper tooth plate (1), a fifth sliding groove (6212) is provided on the limiting pin (621), the fixing column (624) passes through the fifth sliding groove (6212) and is slidably connected to the limiting pin (621), a first spring shaft (6241) is provided on the fixing column (624) and the limiting pin (621), both ends of the second spring (622) are sleeved on the first spring shaft (6241), one end of the second spring (622) abuts against the fixing column (624), and the other end of the second spring (622) abuts against the limiting pin (621).

5. The adjustable crimping pliers according to claim 4, characterized in that: The first transmission arm (71) is provided with a knife seat (712), the second transmission arm (72) is provided with a wire pressing plate (721), the knife seat (712) is provided with a blade (7121) and a fixing mechanism (8), the fixing mechanism (8) is used to fix the blade (7121) on the knife seat (712), the wire pressing plate (721) is provided with a wire cutting groove (7211), and the end of the knife seat (712) away from the first transmission arm (71) abuts against the end of the wire pressing plate (721) away from the second transmission arm (72).

6. The adjustable crimping pliers according to claim 5, characterized in that: The fixing mechanism (8) includes a fixing plate (81) and a fixing bolt (82); a mounting groove (7122) is provided on the knife seat (712); threads are provided on the knife seat (712), the fixing plate (81) and the blade (7121); the blade (7121) and the fixing plate (81) are fixedly connected inside the mounting groove (7122) by the fixing bolt (82); one side of the blade (7121) abuts against the knife seat (712), and the other side of the blade (7121) abuts against the fixing plate (81).

7. The adjustable crimping pliers according to claim 6, characterized in that: A second spring shaft (713) is provided on both the first transmission arm (71) and the second transmission arm (72), and a third spring (7131) is sleeved on the second spring shaft (713), one end of the third spring (7131) abuts against the first transmission arm (71), and the other end of the third spring (7131) abuts against the second transmission arm (72).

8. The adjustable crimping pliers according to claim 7, characterized in that: The knife seat (712) is provided with a locking mechanism (9), and the locking mechanism (9) includes a second connecting rivet (91), a third connecting plate (92) and a third connecting rivet (93). One end of the third connecting plate (92) is rotatably connected to the knife seat (712) through the second connecting rivet (91), and the other end of the third connecting plate (92) is rotatably connected to the third connecting rivet (93). A locking groove (7212) is provided on the wire pressing plate (721), and the third connecting rivet (93) is clamped inside the locking groove (7212).

9. A method for using the adjustable crimping pliers according to any one of claim 8, characterized in that: The steps include: S1: Grip the handle (711) on the first transmission arm (71) and the handle (711) on the second transmission arm (72) and rotate the third connecting rivet (93), the third connecting rivet (93) moves out of the locking groove (7212) to open the crimping pliers, and then release the handle (711), the third spring (7131) pushes the first transmission arm (71) and the second transmission arm (72) away from each other, the first transmission arm (71) pushes the first connecting rivet (73) to rotate around the first connecting shaft (21), and the first connecting rivet (73) pushes the third connecting shaft (41) away from the second crimping disc (52) through the first connecting plate (74) Similarly, the second transmission arm (72) drives the fourth connecting shaft (42) away from the second wire pressing disk (52), the third connecting shaft (41) and the fourth connecting shaft (42) jointly push the upper sliding plate (3) and the lower sliding plate (4) away from the second wire pressing disk (52), and each first limiting slider (31) slides inside the first slide groove (11), so that the upper sliding plate (3) and the lower sliding plate (4) move away from the second wire pressing disk (52) along the direction of the first slide groove (11), and the first wire pressing disk (51) moves away from the first wire pressing disk (51) in the same direction driven by the first rotating shaft (53) until it moves to the top, and at this time the wire pressing pliers is in a state of waiting for wire pressing; S2: When the wire needs to be cut, the wire is placed inside the wire cutting groove (7211), the handle (711) is held tightly, the first transmission arm (71) and the second transmission arm (72) push the knife seat (712) and the wire pressing plate (721) closer to each other, the blade (7121) cooperates with the wire cutting groove (7211) to cut the wire, and then the handle (711) is released to put the wire crimping pliers in a state ready for crimping; S3: Determine the type of wire pressing groove (511) to be used according to the wire pressing material, push the transmission block (623) to slide inside the second slide groove (23) to move it away from the first wire pressing disc (51), the transmission block (623) drives the limit pin (621) away from the first wire pressing disc (51), the abutment angle (512) is separated from the abutment groove (6211) so that the first wire pressing disc (51) can rotate freely, then face the upper tooth plate (1) and turn the knob (531) clockwise, the knob (531) drives the first rotating shaft (53) The first pressing disc (51) rotates clockwise, and the positioning protrusion (514) applies a thrust perpendicular to the inclined surface to the positioning block (6132) through the inclined surface on the positioning block (6132). The inclined surface converts this thrust into a thrust perpendicular to the first rotating shaft (53) and a thrust parallel to the first rotating shaft (53). The second limiting slider (6131) and the fifth sliding groove (6212) prevent the spring plate (613) from rotating. The spring plate (613) is pushed inside the housing (611) under the thrust parallel to the first rotating shaft (53). Move down and compress the second spring (622) until the positioning protrusion (514) rotates a certain angle, the positioning protrusion (514) separates from the positioning block (6132), and the spring pushes the spring plate (613) to move up. The positioning protrusion (514) contacts the next positioning block (6132). At this time, the user can feel the change in resistance when turning the knob (531), indicating that the first wire pressing disk (51) has rotated a gear. The user can observe the mark on the gear mark ring (513) through the observation port (32) and repeat the above steps. The process is to make the mark correspond to the type of wire pressing groove (511) to be used, and then the knob (531) is rotated counterclockwise until it cannot be rotated, the positioning block (6132) will block the positioning protrusion (514) from rotating, and then the transmission block (623) is released, and the spring pushes the limit pin (621) back to the initial position, and the abutment angle (512) and the abutment groove (6211) abut to lock the first wire pressing disc (51), which means that the gear adjustment of the first wire pressing disc (51) is completed. Similarly, the gear adjustment of the second wire pressing disc (52) can be performed; S4: Connect the terminal to the wire, then place the terminal inside the wire pressing groove (511) on the second wire pressing disc (52), then hold the handle (711), the first transmission arm (71) and the second transmission arm (72) drive the upper sliding plate (3) and the lower sliding plate (4) to approach the second wire pressing disc (52) in a direction parallel to the first slide groove (11), the wire pressing groove (511) on the first wire pressing disc (51) abuts against the terminal and continuously applies pressure until the first wire pressing disc (51) abuts against the second wire pressing disc (52), completing the compression and fixation of the terminal and the wire, then release the handle (711) and take out the terminal; S5: Grip the handle (711) until the knife seat (712) and the wire pressing plate (721) abut against each other, then rotate the third connecting rivet (93) to the inside of the locking groove (7212), and then release the handle (711). The spring pushes the first transmission arm (71) and the second transmission arm (72) away from each other, and the knife seat (712) and the wire pressing plate (721) move away from each other by a short distance so that the third connecting rivet (93) is clamped in the locking groove (7212). At this time, the wire crimping pliers is in a locked state; S6: When the blade (7121) needs to be replaced, unscrew the fixing bolt (82), then remove the fixing plate (81) and the blade (7121) from the installation slot (7122), then place the new blade (7121) into the installation slot (7122), cover the fixing plate (81), and screw back the fixing bolt (82).

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