Electric crimping pliers

Abstract

The utility model provides a pair of electric crimping pliers, which comprises a shell, a plier head, a jaw die and a connecting assembly, the plier head comprises two opposite plier bodies, the two plier bodies are respectively hinged inside the shell, the jaw ends of the two plier bodies respectively extend out of the shell, and the jaw ends of the two plier bodies are respectively provided with a mounting hole. The jaw die comprises a first pressing die and a second pressing die, and fixing holes are formed in the first pressing die and the second pressing die respectively. And the first crimping part on the inner side of the first pressing die is matched with the second crimping part on the inner side of the second pressing die. The first pressing die and the second pressing die are detachably connected with the jaw ends of the two pliers bodies through connecting assemblies respectively. The connecting assembly comprises a screw, a nut and a first spring, the screw is arranged in the corresponding mounting hole and the fixing hole in a penetrating mode, the first spring is arranged on the screw in a sleeving mode, and the nut is in threaded connection with the screw. The design of the connecting assembly facilitates the quick replacement of the jaw die, and can improve the operation efficiency and the use flexibility of the electric crimping pliers.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to an electric crimping pliers. Background Art

[0002] Electric crimping pliers are tools that use the power of a lithium battery to drive an electric motor to output kinetic energy. They are mainly used for cable cutting and terminal crimping in power distribution operations. They are an essential tool for the power industry to perform wire splicing and crimping during line infrastructure construction and line maintenance.

[0003] In traditional electric crimping pliers, the jaw mold is fixedly connected or integrally formed on the plier head, so it can only be used for one or several specific types of cable cutting or terminal crimping during use, and has poor flexibility. Currently, there are some electric crimping pliers with detachable jaw molds, which can replace different types of jaw molds according to the usage scenarios. However, the detachable structure of these jaw molds is inconvenient to operate and has low replacement efficiency, which is not conducive to the rapid replacement of the jaw molds. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an electric crimping pliers, which facilitates the rapid replacement of the jaw mold and improves the flexibility of use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A kind of electric crimping pliers, which includes a pliers head, a jaw mold and a connecting assembly, the pliers head includes two pliers bodies arranged opposite to each other, and the jaw ends of the two pliers bodies are respectively provided with mounting holes; the jaw mold includes a first pressing die and a second pressing die arranged opposite to each other, and the first pressing die and the second pressing die are respectively provided with fixing holes; the first pressing die and the second pressing die are respectively detachably connected to the jaw ends of the two pliers bodies through the connecting assembly; the connecting assembly includes a screw, a nut and a first spring, the screw is inserted into the corresponding mounting hole and fixing hole, the first spring is sleeved on the screw, and the nut is threadedly connected to the screw.

[0007] Preferably, the jaw end of the pliers body includes two splints arranged at intervals, a clamping groove is formed between the two splints, and the two splints are provided with corresponding mounting holes. The first die and the second die are respectively provided in the clamping grooves of the two pliers bodies. The screw rod passes through the mounting hole of one of the splints, the fixing hole on the first die or the second die, and the mounting hole on the other splint in sequence and then cooperates with the nut to be connected.

[0008] Preferably, the screw includes a head, a first column portion, a second column portion and a threaded portion axially connected in sequence, the outer diameter of the head is larger than the inner diameter of the mounting hole, the outer diameter of the first column portion is smaller than the inner diameter of the mounting hole and larger than the outer diameter of the second column portion, the inner diameter of the fixing hole is smaller than the outer diameter of the first column portion and larger than the outer diameter of the second column portion; the first spring is sleeved on the second column portion, and one end of the first spring is connected to the mounting hole of the other splint, and the other end abuts against the nut; the length of the second column portion is larger than the sum of the widths of the fixing hole and the splint.

[0009] Preferably, the first die and the second die are respectively provided with a connecting channel, and the connecting channel runs through the fixing hole to the tail end of the first die or the second die, and the width of the connecting channel is greater than the outer diameter of the second column portion and smaller than the inner diameter of the fixing hole.

[0010] Preferably, both sides of the first pressing die and the second pressing die in the thickness direction are provided with protruding limiting parts, and the protruding limiting parts on both sides respectively abut against the inner side surfaces of the two clamping plates in the corresponding pliers body.

[0011] Preferably, a first crimping portion is provided on the inner side of the first crimping die, and a second crimping portion is provided on the inner side of the second crimping die, and the first crimping portion matches the second crimping portion; the first crimping portion is provided with a plurality of crimping grooves of different models, and the second crimping portion is provided with a plurality of crimping blocks matching the plurality of crimping grooves.

[0012] Preferably, the electric crimping pliers also include a shell and a pressing handle, the two pliers bodies are respectively hinged to the inside of the shell, and the jaw ends of the two pliers bodies extend out of the shell respectively; one end of the pressing handle is inside the shell and connected to one of the pliers bodies, and the other end extends out of the shell.

[0013] Preferably, the electric crimping pliers also include a motor, a reduction mechanism and a transmission mechanism. The input end of the reduction mechanism is connected to the output end of the motor. The transmission mechanism includes a screw rod, a slide and a roller. The screw rod is connected to the output end of the reduction mechanism. The slide is movably engaged with the screw rod. There are two rollers, which are rotatably arranged on both sides of the slide, and the rollers are located between the tail ends of the two pliers bodies.

[0014] Preferably, the electric crimping pliers further include a first limit block and a second limit block, the first limit block and the second limit block respectively corresponding to the two ends of the screw rod, and the first limit block is close to the jaw end of the pliers body, and the second limit block is close to the deceleration mechanism.

[0015] Preferably, a second spring is provided between the first limit block and the caliper bodies on both sides, a first mounting groove is provided on the first limit block, and a second mounting groove is correspondingly provided on the caliper body, one end of the second spring is fixed in the first mounting groove, and the other end is fixed in the second mounting groove.

[0016] Compared with the existing technology, the beneficial effects of the present invention are: in the electric crimping pliers of the present invention, the jaw mold is installed to the jaw end of the pliers body through a connecting assembly. The design of the connecting assembly facilitates the rapid replacement of the jaw mold, which can improve the operating efficiency and the flexibility of use of the electric crimping pliers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an electric crimping pliers according to some embodiments of the present invention;

[0018] Figure 2 Schematic diagram of the structure of the pliers head and the jaw mold in some embodiments of the present invention;

[0019] Figure 3 Exploded views of the pliers head and jaw mold in some embodiments of the present invention;

[0020] Figure 4 A schematic structural diagram of the pliers head and the jaw mold in some embodiments of the present invention from another perspective;

[0021] Figure 5 for Figure 4 Cross-sectional view along AA direction;

[0022] Figure 6 Schematic diagram of the structure of the screw rod and the first spring in some embodiments of the present invention;

[0023] Figure 7 Schematic diagram of the structure of the first die in some embodiments of the present invention;

[0024] Figure 8 Schematic diagram of the structure of the pliers head and the connecting assembly when pressing a nut in some embodiments of the present invention;

[0025] Figure 9 sectional views of electric crimping pliers according to some embodiments of the present invention.

[0026] In the figure, 100-electric crimping pliers, 10-housing, 11-first limit block, 111-first mounting groove, 12-second limit block, 13-second spring, 20-pliers head, 21-pliers body, 211-mounting hole, 212-clamping plate, 213-clamping groove, 214-second mounting groove, 30-jaw mold, 31-first pressing die, 311-first crimping part, 312-fixing hole, 313-connecting channel, 314-protruding limit portion, 32-second pressing die, 321-second crimping part, 40-connecting assembly, 41-screw, 411-head, 412-first column part, 413-second column part, 414-threaded part, 42-nut, 43-first spring, 50-pressing handle, 60-motor, 70-reduction mechanism, 80-transmission mechanism, 81-screw, 82-slide, 83-roller. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It is understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0028] In the description of this utility model, the terms "first," "second," etc., if used, are used solely to distinguish the objects being described and do not convey any order or technical meaning. Therefore, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of such objects. Furthermore, "a," "an," and similar terms do not imply a limitation on quantity, but rather indicate the presence of at least one, and "plurality" means at least two.

[0029] In the description of this utility model specification, reference to "one embodiment" or "some embodiments" means that one or more embodiments of the utility model include a particular feature, structure or characteristic described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized.

[0030] The utility model provides an electric crimping pliers which can be used for cable cutting or terminal crimping. Figures 1 to 3In some embodiments, the electric crimping pliers 100 include a pliers head 20, a jaw mold 30 and a connecting assembly 40. The pliers head 20 includes two pliers bodies 21 arranged opposite to each other. The jaw ends of the two pliers bodies 21 are respectively provided with mounting holes 211, and the central axis of the mounting hole 211 is parallel to the thickness direction of the pliers body 21.

[0031] The jaw mold 30 includes a first die 31 and a second die 32 arranged opposite to each other. A fixing hole 312 is provided on the first die 31 and the second die 32 respectively. The central axis of the fixing hole 312 is parallel to the thickness direction of the first die 31 or the second die 32.

[0032] The first pressing die 31 and the second pressing die 32 are detachably connected to the jaw ends of the two caliper bodies 21 via a connecting assembly 40. Specifically, the connecting assembly 40 includes a screw 41, a nut 42, and a first spring 43. The screw 41 is inserted into the corresponding mounting hole 211 and fixing hole 312. The first spring 43 is sleeved on the screw 41. The nut 42 is threadedly connected to the screw 41.

[0033] Combined with reference Figure 4 and Figure 5 In some embodiments, the jaw end of the pliers body 21 includes two spaced-apart clamping plates 212, a clamping groove 213 is formed between the two clamping plates 212, and mounting holes 211 are correspondingly provided on the two clamping plates 212. The first pressing die 31 and the second pressing die 32 are respectively correspondingly provided in the clamping grooves 213 of the two pliers bodies 21. The screw 41 passes through the mounting hole 211 of one of the clamping plates 212, the fixing hole 312 on the first pressing die 31 or the second pressing die 32, and the mounting hole 211 on the other clamping plate 212 in sequence, and then is connected with the nut 42.

[0034] Further, refer to Figure 6 The screw 41 includes a head 411, a first column portion 412, a second column portion 413 and a threaded portion 414 connected axially in sequence. The outer diameter of the head 411 is larger than the inner diameter of the mounting hole 211, the outer diameter of the first column portion 412 is smaller than the inner diameter of the mounting hole 211 and larger than the outer diameter of the second column portion 413, and the inner diameter of the fixing hole 312 is smaller than the outer diameter of the first column portion 412 and larger than the outer diameter of the second column portion 413; the first spring 43 is sleeved on the second column portion 413, and one end of the first spring 43 is connected to the mounting hole 211 of the other clamping plate 212, and the other end abuts against the nut 42; the length of the second column portion 413 is larger than the sum of the widths of the fixing hole 312 and the clamping plate 212.

[0035] Reference Figure 4 and Figure 5When the first die 31 is connected to the corresponding pliers body 21 through the connecting assembly 40, the head 411 is on the outside of one of the splints 212, the first column portion 412 is in the mounting hole 211 of one of the splints 212, and the second column portion 413 is in the mounting hole 312 of the first die 31 and the mounting hole 211 of the other splint 212. At the same time, the first spring 43 is in a compressed state. The first spring 43 has a force on the nut 42 that is perpendicular to the splint 212 and toward the nut 43, so that the nut 43 and the screw 41 have a tendency to move in this direction, so that the head 411 of the screw 41 is tightly against one of the splints 212, thereby fixing the first die 31 and the pliers body 21.

[0036] Further, refer to Figure 3 and Figure 7 In some embodiments, a connecting channel 313 is respectively provided on the first die 31 and the second die 32. The connecting channel 313 runs through the fixing hole 312 to the tail end of the first die 31 or the second die 32. The width of the connecting channel 313 is greater than the outer diameter of the second column portion 413 and smaller than the inner diameter of the fixing hole 312.

[0037] Combined with reference Figure 8 When replacing the jaw mold 30, a force F perpendicular to the direction of the clamping plate 212 can be applied to the nut 42, so that the first spring 43 is further compressed, and the screw 41 moves in the direction of the force F, so that the length range of the second column portion 413 covers the width range of the clamping groove 213. At the same time, since the width of the connecting channel 313 is greater than the outer diameter of the second column portion 413 and smaller than the inner diameter of the fixing hole 312, the second column portion 413 can pass through the connecting channel 313. Therefore, at this time, the first pressing die 31 or the second pressing die can be pulled out upward (along the direction from the tail end to the front end of the electric crimping pliers 100) 32. After that, another set of jaw molds can be inserted downward into the corresponding clamping groove 213, so that the second column part 413 passes through the connecting channel in the other set of jaw molds and enters the corresponding fixing hole. After that, the force F is removed, and the first spring 43 rebounds a certain distance but is still in a compressed state. The first spring 43 has a force on the nut 42 that is perpendicular to the clamping plate 212 and toward the nut 43, so that the nut 43 and the screw 41 move in this direction, and finally the head 411 of the screw 41 is tightly against one of the clamping plates 212, thereby fixing the other set of jaw molds and the clamp body 21.

[0038] During application, the jaw mold 30 can be replaced according to different application requirements. The design of the above-mentioned connecting component 40 facilitates the rapid replacement of the jaw mold 30. Only pressing, pulling out the mold and inserting the mold are required, and there is no need to tighten or install the nut. This can significantly improve the operating efficiency and the flexibility of the use of electric crimping pliers.

[0039] Reference Figure 5 In some preferred embodiments, protruding stoppers 314 are provided on both sides of the first and second dies 31, 32 in the thickness direction. The protruding stoppers 314 on both sides abut against the inner side surfaces of the two clamping plates 212 in the corresponding caliper body 21. The provision of the protruding stoppers 314 not only ensures the assembly accuracy of the first and second dies 31, 32, but also serves as a guide during assembly and disassembly of the first and second dies 31, 32, thereby improving assembly and disassembly efficiency.

[0040] Reference Figure 3 In some preferred embodiments, a first crimping portion 311 is provided on the inner side of the first compression mold 31 (facing the second compression mold 32), and a second crimping portion 321 is provided on the inner side of the second compression mold 32 (facing the first compression mold 31). The first crimping portion 311 and the second crimping portion 312 mate to facilitate cable shearing or terminal crimping. The first crimping portion 311 is provided with multiple crimping grooves of different sizes, and the second crimping portion 321 is provided with multiple crimping blocks that match the multiple crimping grooves. In practice, the structures of the first crimping portion 311 and the second crimping portion 321 can be appropriately configured based on actual needs.

[0041] Reference Figure 9 In some preferred embodiments, the electric crimping pliers further include a housing 10 and a pressing handle 50 . The two pliers 21 are hingedly connected to the interior of the housing 10 , with the jaws of the two pliers 21 extending out of the housing 10 . One end of the pressing handle 50 is located within the housing 10 and connected to one of the pliers 21 , while the other end extends out of the housing 10 . During use, based on the principle of leverage, when the pressing handle 50 is pressed, it drives the pliers 21 connected thereto to rotate, thereby separating the jaws of the first pliers 21 from the other pliers 21 , thereby facilitating the insertion of a cable or terminal into the jaw mold 30 .

[0042] In some preferred embodiments, the electric crimping pliers further include a motor 60, a reduction mechanism 70, and a transmission mechanism 80. The input end of the reduction mechanism 70 is connected to the output end of the motor 60. The transmission mechanism 80 includes a screw 81, a slide 82, and a roller 83. The screw 81 is connected to the output end of the reduction mechanism 70. The slide 82 is movably engaged with the screw 81. There are two rollers 83, which are rotatably arranged on both sides of the slide 82, and the rollers 83 are located between the tail ends of the two pliers bodies 21. Among them, the reduction mechanism 70 can adopt a planetary gear reducer in the prior art. Its structure or working principle belongs to the prior art and will not be repeated here. The screw 81 is threadedly engaged with the slide 82, and the slide 82 is limited to moving only along the length direction of the screw 81. When the motor 60 is working, it can drive the screw rod 81 to rotate, thereby driving the slide 82 to move along the length direction of the screw rod 81, and then use the rollers 83 on both sides to push the two clamp bodies 21 to rotate, so that the jaw ends of the two clamp bodies 21 are closed, and the jaw mold 30 is used to crimp the cables or terminals.

[0043] Furthermore, the electric crimping pliers also include a first limit block 11 and a second limit block 12. The first limit block 11 and the second limit block 12 correspond to the two ends of the screw rod 81, respectively. The first limit block 11 is close to the jaw end of the pliers body 21, and the second limit block 12 is close to the reduction mechanism 70. The two ends of the screw rod 81 can be respectively mounted to the first limit block 11 and the second limit block 12 via bearings and other parts to ensure the rotation function of the screw rod 81. The first limit block 11 and the second limit block 12 can limit the slide 82 to prevent the slide 82 from moving beyond the allowable range, thereby ensuring the reliability of the electric crimping pliers.

[0044] Furthermore, a second spring 13 is provided between the first limit block 11 and the caliper body 21 on either side. The first limit block 11 is provided with a first mounting slot 111, and the caliper body 21 is provided with a corresponding second mounting slot 214. One end of the second spring 13 is fixed in the first mounting slot 111, and the other end is fixed in the second mounting slot 214. When the second spring 13 is in a compressed state, it exerts an outward force on the caliper body 21, causing the caliper body 21 to tend to close, thereby facilitating cable or terminal crimping.

[0045] To sum up, the utility model provides an electric crimping pliers, in which the jaw mold is installed to the jaw end of the pliers body through a connecting component. The design of the connecting component facilitates the rapid replacement of the jaw mold, which can improve the operating efficiency and the flexibility of the use of the electric crimping pliers.

[0046] The present invention has been described with reference to the above embodiments. However, these embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. An electric crimping pliers, characterized by: The electric crimping pliers include a pliers head, a jaw mold and a connecting assembly. The pliers head includes two pliers bodies arranged opposite to each other, and the jaw ends of the two pliers bodies are respectively provided with mounting holes; the jaw mold includes a first pressing die and a second pressing die arranged opposite to each other, and the first pressing die and the second pressing die are respectively provided with fixing holes; the first pressing die and the second pressing die are respectively detachably connected to the jaw ends of the two pliers bodies through the connecting assembly; the connecting assembly includes a screw, a nut and a first spring, the screw is inserted into the corresponding mounting hole and fixing hole, the first spring is sleeved on the screw, and the nut is threadedly connected to the screw.

2. The electric crimping pliers according to claim 1, characterized in that: The jaw end of the pliers body includes two splints arranged at intervals, a clamping groove is formed between the two splints, and the two splints are correspondingly provided with the mounting holes. The first pressing die and the second pressing die are respectively correspondingly arranged in the clamping grooves of the two pliers bodies. The screw rod passes through the mounting hole of one of the splints, the fixing hole on the first pressing die or the second pressing die, and the mounting hole on the other splint in sequence, and then cooperates with the nut to be connected.

3. The electric crimping pliers according to claim 2, characterized in that: The screw comprises a head, a first cylindrical portion, a second cylindrical portion and a threaded portion connected in sequence axially, the outer diameter of the head being larger than the inner diameter of the mounting hole, the outer diameter of the first cylindrical portion being smaller than the inner diameter of the mounting hole and larger than the outer diameter of the second cylindrical portion, and the inner diameter of the fixing hole being smaller than the outer diameter of the first cylindrical portion and larger than the outer diameter of the second cylindrical portion; the first spring is sleeved on the second cylindrical portion, and one end of the first spring is connected to the mounting hole of the other splint, and the other end abuts against the nut; The length of the second column portion is greater than the sum of the widths of the fixing hole and the clamping plate.

4. The electric crimping pliers according to claim 3, characterized in that: The first die and the second die are respectively provided with a connecting channel, which runs through the fixing hole to the tail end of the first die or the second die, and the width of the connecting channel is greater than the outer diameter of the second column portion and smaller than the inner diameter of the fixing hole.

5. The electric crimping pliers according to claim 2, characterized in that: Both sides of the first pressing die and the second pressing die in the thickness direction are respectively provided with protruding limiting parts, and the protruding limiting parts on both sides respectively abut against the inner side surfaces of the two clamping plates in the corresponding pliers body.

6. The electric crimping pliers according to any one of claims 1 to 5, characterized in that: A first crimping portion is provided on the inner side of the first crimping die, and a second crimping portion is provided on the inner side of the second crimping die, and the first crimping portion matches the second crimping portion; the first crimping portion is provided with multiple crimping grooves of different models, and the second crimping portion is provided with multiple crimping blocks matching the multiple crimping grooves.

7. The electric crimping pliers according to any one of claims 1 to 5, characterized in that: The electric crimping pliers also include a shell and a pressing handle, wherein the two pliers bodies are respectively hinged to the inside of the shell, and the jaw ends of the two pliers bodies respectively extend out of the shell; one end of the pressing handle is inside the shell and connected to one of the pliers bodies, and the other end extends out of the shell.

8. The electric crimping pliers according to any one of claims 1 to 5, characterized in that: The electric crimping pliers also include a motor, a reduction mechanism and a transmission mechanism. The input end of the reduction mechanism is connected to the output end of the motor. The transmission mechanism includes a screw rod, a slide and a roller. The screw rod is connected to the output end of the reduction mechanism. The slide is movably engaged with the screw rod. There are two rollers, which are rotatably arranged on both sides of the slide, and the rollers are located between the tail ends of the two pliers bodies.

9. The electric crimping pliers according to claim 8, characterized in that: The electric crimping pliers also includes a first limit block and a second limit block, the first limit block and the second limit block respectively corresponding to the two ends of the screw rod, and the first limit block is close to the jaw end of the pliers body, and the second limit block is close to the deceleration mechanism.

10. The electric crimping pliers according to claim 9, characterized in that: A second spring is provided between the first limit block and the caliper bodies on both sides. A first mounting groove is provided on the first limit block, and a second mounting groove is correspondingly provided on the caliper body. One end of the second spring is fixed in the first mounting groove, and the other end is fixed in the second mounting groove.

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