CN107706692B - Wire crimping terminal pressfitting machine - Google Patents
Wire crimping terminal pressfitting machine Download PDFInfo
- Publication number
- CN107706692B CN107706692B CN201610707154.3A CN201610707154A CN107706692B CN 107706692 B CN107706692 B CN 107706692B CN 201610707154 A CN201610707154 A CN 201610707154A CN 107706692 B CN107706692 B CN 107706692B
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- China
- Prior art keywords
- pressing
- crimping terminal
- working part
- press
- frame
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- 238000002788 crimping Methods 0.000 title claims abstract description 35
- 238000003825 pressing Methods 0.000 claims abstract description 155
- 230000007246 mechanism Effects 0.000 claims abstract description 81
- 230000003028 elevating effect Effects 0.000 claims description 7
- 230000004308 accommodation Effects 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002950 deficient Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/048—Crimping apparatus or processes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention relates to the technical field of electric connectors, in particular to an electric wire crimping terminal pressing machine. The wire pressing machine comprises a frame, wherein a lifting mechanism is arranged in the frame and connected with a pressing mechanism, a workbench is arranged at the bottom of the frame, and a pressing mechanism for fixing wires and a fixing mechanism for fixing a pressing terminal are further arranged on the workbench. According to the invention, the lifting mechanism is connected with the pressing mechanism, so that the lifting mechanism can control the pressing mechanism to press, meanwhile, the pressing mechanism and the fixing mechanism are respectively arranged on two sides of the pressing mechanism, and the electric wires and the press-connection terminals are respectively fixed, so that both hands of an operator can be liberated in the pressing process, and meanwhile, the pressing mechanism can uniformly stress each electric wire and the press-connection terminals, and the problem of excessive pressing force or insufficient force of defective products can be avoided. The wire crimping terminal press-fit machine can realize automatic production, improves the working efficiency and can ensure the press-fit quality.
Description
Technical Field
The invention relates to the technical field of electric connectors, in particular to an electric wire crimping terminal pressing machine.
Background
Wires are widely used in signal transmission or power connection of electronic products, wherein crimp terminals are pressed at two ends of each group of wires for connection between electronic devices. At present, a clamp type manual tool is generally adopted in the crimping technology of the electric wire and the crimping terminal, the electric wire is cut off to a fixed length and stripped, the bare wire is required to be stripped before being crimped, the front end head of the electric wire is manually fed into the crimping terminal to form a semi-finished product, and then the semi-finished product is crimped through the clamp type manual tool. The production mode has high dependence on workers, low efficiency and unstable quality.
Therefore, how to provide a wire crimping terminal pressing machine to solve the problems of low wire and crimping terminal pressing efficiency and unable quality assurance in the prior art is a technical problem that needs to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide an electric wire crimping terminal laminating machine which is used for solving the problems that in the prior art, the laminating efficiency of an electric wire and a crimping terminal is low and the quality cannot be ensured.
To achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an electric wire crimping terminal pressfitting machine, includes the frame, be provided with elevating system in the frame, elevating system is connected with pressing mechanism, the frame bottom is provided with the workstation, still be provided with the hold-down mechanism that fixed electric wire was used and the fixed establishment of fixed crimping terminal on the workstation, pressing mechanism both sides set up hold-down mechanism and fixed establishment respectively.
Preferably, the pressing mechanism comprises a fixed working part and a rotary working part, the fixed working part is fixedly arranged between the pressing mechanism and the fixed mechanism through a pressing support frame, one end of the rotary working part is rotatably arranged on the pressing support frame, and the pressing support frame is fixedly arranged on the workbench; the rotating working part is connected with the lifting mechanism and rotates along with the up-and-down movement of the lifting mechanism.
Preferably, the lifting mechanism comprises a first connecting rod and a pressing rod, wherein the first connecting rod is connected with the rotary working part, one end of the first connecting rod is connected with the rotary working part, the other end of the first connecting rod is connected with the pressing rod, a pressing plate is arranged at the top of the pressing rod in a contact manner, the pressing plate is connected with the pressing rod through a telescopic mechanism, and the telescopic mechanism is connected with one end, close to the rotary working part, of the pressing rod;
the top of the pressing plate is connected with a driving mechanism, and the driving mechanism is arranged on the frame.
Preferably, one end of the pressing rod, which is in contact with the pressing plate, is further provided with a rotatable rotating shaft, a first accommodating groove is further formed in the bottom of the pressing plate, the width of the first accommodating groove is the same as the height of the first accommodating groove in the axial direction of the rotating shaft, and the top of the rotating shaft is located in the first accommodating groove.
Preferably, a rotating rod is further arranged between the first connecting rod and the pressing support frame, one end of the rotating rod is rotationally connected with the pressing support frame, and the other end of the rotating rod is rotationally connected with the first connecting rod.
Preferably, at least one first limit column is further arranged between the pressing plate and the top plate of the frame, and the first limit column is fixedly arranged on the top plate.
Preferably, a guide post is further disposed between the workbench and the top plate, and the guide post penetrates through the pressing plate to enable the pressing plate to slide up and down along the guide post.
Preferably, the workbench is further provided with a second accommodating groove, the pressing support frames are fixedly arranged in the second accommodating groove, the pressing support frames are symmetrically arranged, and the fixed working part and the rotary working part are arranged between the two pressing support frames.
Preferably, the workbench is further provided with at least one second limiting column, and the second limiting column is located below the pressing plate.
Preferably, the pressing mechanism comprises a bearing table for bearing the electric wire and a pressing handle, wherein an arc-shaped groove for containing the electric wire is formed in the bearing table, and a rubber cushion block is arranged at one end of the pressing handle, which presses the electric wire.
The invention has the beneficial effects that:
according to the invention, the lifting mechanism is connected with the pressing mechanism, so that the lifting mechanism can control the pressing mechanism to press, meanwhile, the pressing mechanism and the fixing mechanism are respectively arranged on two sides of the pressing mechanism, and the electric wires and the press-connection terminals are respectively fixed, so that both hands of an operator can be liberated in the pressing process, and meanwhile, the pressing mechanism can uniformly stress each electric wire and the press-connection terminals, and the problem of excessive pressing force or insufficient force of defective products can be avoided. The wire crimping terminal press-fit machine can realize automatic production, improves the working efficiency and can ensure the press-fit quality.
Drawings
Fig. 1 is a schematic view of a structure of a wire crimping terminal press provided by the invention;
fig. 2 is a front view of the wire crimp terminal press provided by the invention;
fig. 3 is a side view of the wire crimp terminal press provided by the present invention;
FIG. 4 is a schematic view of a pressing mechanism and a lifting mechanism according to the present invention;
FIG. 5 is a side view of a portion of a pressing mechanism and a lifting mechanism provided by the present invention;
fig. 6 is a schematic diagram of the operation of the wire crimping terminal pressing machine provided by the invention;
fig. 7 is a schematic structural view of a connector provided by the present invention.
In the figure:
1. a frame; 11. a top plate; 12. a side plate; 2. a lifting mechanism; 21. a first connecting rod; 22. pressing a pressing rod; 23. pressing the plate; 231. a first accommodation groove; 24. a telescoping mechanism; 25. a driving mechanism; 26. a rotating lever; 27. a rotating shaft; 28. a connecting piece; 3. a pressing mechanism; 31. a fixed working part; 311. a first groove; 32. rotating the working part; 321. a second groove; 33. pressing the supporting frame; 331. a connecting lug; 332. a compacting plate; 4. a work table; 41. a second accommodation groove; 5. a compressing mechanism; 6. a fixing mechanism; 7. a first limit post; 8. a guide post; 81. guide sleeve; 9. and the second limiting column.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be further described by the following detailed description with reference to the accompanying drawings.
The embodiment provides an electric wire crimping terminal pressfitting machine, as shown in fig. 1-3, it includes frame 1, be provided with elevating system 2 in the frame 1, elevating system 2 is connected with pressing system 3, and elevating system 2 pulls pressing system 3 from top to bottom, makes it can pressfitting electric wire and crimping terminal, frame 1 bottom is provided with workstation 4 for put electric wire and crimping terminal, still be provided with compressing mechanism 5 and the fixed establishment 6 of fixed crimping terminal that fixed electric wire was used on the workstation 4, pressing system 3 both sides set up compressing mechanism 5 and fixed establishment 6 respectively.
Specifically, the pressing mechanism 3 includes a fixed working portion 31 and a rotating working portion 32, the fixed working portion 31 is fixedly disposed between the pressing mechanism 5 and the fixing mechanism 6 through a pressing support 33, one end of the rotating working portion 32 is rotatably disposed on the pressing support 33, and the pressing support 33 is fixedly disposed on the workbench 4; the rotation working portion 32 is connected to the lifting mechanism 2 and rotates with the up-and-down movement of the lifting mechanism 2. The rotary working part 32 and the fixed working part 31 are opened and closed in the up-and-down movement of the lifting mechanism 2, and the crimp terminal can be pressed to clamp the electric wire.
Wherein, be provided with the first recess 311 that can hold the crimping terminal on the fixed work portion 31, this fixed work portion 31 is circular structure, and the first recess 311 that rotates on the work portion 32 and correspond on the fixed work portion 31 is provided with the second recess 321, and first recess 311 and second recess 321 are arc structure recess, and first recess 311 and second recess 321 mutually support the crimping terminal extrusion deformation in the pressfitting process.
The lifting mechanism 2 comprises a first connecting rod 21 and a pressing rod 22, wherein the first connecting rod 21 is connected with the rotary working part 32, one end of the first connecting rod 21 is rotationally connected with the rotary working part 32, the other end of the first connecting rod is fixedly connected with the pressing rod 22, a pressing plate 23 is arranged at the top of the pressing rod 22, and the pressing plate 23 and the pressing rod 22 are in contact with each other and are not connected; the pressing plate 23 contacts with the pressing rod 22 through the telescopic mechanism 24 to ensure that the pressing rod 22 can rotate along with the lifting of the pressing plate 23, wherein the front end of the pressing plate 23 is provided with a convex block, and the telescopic mechanism 24 is arranged on two sides of the convex block at the front end of the pressing plate 23 and symmetrically arranged; the telescopic mechanism 24 is connected with one end of the pressing rod 22 close to the rotary working part 32; the telescopic mechanism 24 is preferably a spring in this embodiment, but may be a piston rod structure of an oil cylinder or an air cylinder in other embodiments.
In order to realize the automatic ascending and descending of the pressing plate 23, as shown in fig. 1-3, the top of the pressing plate 23 is connected with a driving mechanism 25, and the driving mechanism 25 is arranged on the frame 1. The frame 1 includes a top plate 11 and side plates 12. Wherein the driving mechanism 25 is a cylinder or an oil cylinder, preferably a cylinder in this embodiment. The cylinder is arranged on the top plate 11 of the frame 1, a through hole through which a cylinder piston rod can pass is arranged in the middle of the top plate 11, and the cylinder piston rod is connected with the pressing plate 23 through a connecting piece 28; as shown in fig. 7, the connecting piece 28 is fixedly connected with the pressing plate 23, an inverted T-shaped through hole is formed in the connecting piece 28, and the piston rod extends into the inverted T-shaped through hole and is connected with the connecting piece 28 through a limiting block. The structure is simple, and the piston rod and the pressing plate 23 can be effectively prevented from being separated in the working process.
As shown in fig. 4-5, a rotating rod 26 is further disposed between the first connecting rod 21 and the pressing support 33 to enable the rotating working portion 32 to work normally in the pressing process, one end of the rotating rod 26 is rotatably connected with the pressing support 33, and the other end of the rotating rod 26 is rotatably connected with the first connecting rod 21. Meanwhile, the joint of the rotating rod 26 and the first connecting rod 21 and the joint of the first connecting rod 21 and the rotating working part 32 are all positioned at the same end of the first connecting rod 21. This kind of structure can guarantee to rotate the working portion 32 and can make pressfitting force concentrate in second recess 321 department at the during operation, guarantees pressfitting quality.
In order to make the friction force between the pressing rods 22 and the pressing plates 23 smaller in the rotation process, one ends of the pressing rods 22 and the pressing plates 23, which are in contact with each other, are further provided with rotatable rotating shafts 27, wherein the rotating shafts 27 are arranged between the two pressing rods 22, the bottoms of the pressing plates 23 are further provided with first accommodating grooves 231, the width of each first accommodating groove 231 is the same as the height of the corresponding rotating shaft 27 in the axial direction, and the tops of the rotating shafts 27 are positioned in the first accommodating grooves 231. The first receiving groove 231 is provided to prevent the rotation shaft 27 from being deviated on a predetermined path during the sliding process, affecting the press-fit. The first accommodating groove 231 is located between the two telescopic mechanisms 24 and coincides with the symmetry axis of the pressing plate 23.
In order to prevent the rotating shaft 27 and the first accommodating groove 231 from being separated from each other due to excessive lifting of the telescopic mechanism 24, at least one first limiting post 7 is further arranged between the pressing plate 23 and the top plate 11 of the frame 1 in the embodiment, and the first limiting post 7 is fixedly arranged on the top plate 11. The length of the first limiting post 7 is set according to the requirement, and it should be noted that the length of the first limiting post 7 should ensure that the rotation shaft 27 and the first accommodating groove 231 cannot be separated from each other, and at the same time, the rotation working portion 32 and the fixed working portion 31 can be separated.
In order to ensure the reliability of the whole structure of the pressing machine, a guide post 8 is further arranged between the workbench 4 and the top plate 11, and the guide post 8 passes through the pressing plate 23 to enable the pressing plate 23 to slide up and down along the guide post 8. And the guide sleeve 81 is arranged on the pressing plate 23 and used for reducing friction between the pressing plate 23 and the guide post 8 and prolonging the service life of the guide post 8 or the pressing plate 23. The number of the guide posts 8 is 4, the upper ends of the guide posts 8 are fixedly connected with the top plate 11, and the lower ends of the guide posts 8 are fixedly connected with the workbench 4. This structure can ensure that the pressing plate 23 will not deviate during operation, further ensuring the pressing quality.
In this embodiment, the workbench 4 is further provided with a second accommodating groove 41, the pressing support frame 33 is fixedly disposed in the second accommodating groove 41, the pressing support frames 33 are symmetrically disposed, and the fixed working portion 31 and the rotating working portion 32 are disposed between the two pressing support frames 33. The second receiving groove 41 is provided for fixing the pressing support 33.
The pressfitting support frame 33 symmetry sets up, and still is provided with engaging lug 331 on the pressfitting support frame 33, and engaging lug 331 passes through screw connection with workstation 4, and still is provided with pinch plate 332 on the pressfitting support frame 33, and pinch plate 332 passes through screw connection with workstation 4.
In order to prevent the rotation shaft 27 from being separated from the first accommodating groove 231 due to the excessive descending height of the pressing plate 23, at least one second limiting post 9 is further arranged on the workbench 4 in the embodiment, the second limiting post 9 is positioned below the pressing plate 23, and the second limiting posts 9 are respectively arranged at two sides of the second accommodating groove 41.
The pressing mechanism 5 in this embodiment includes a loading table 51 for loading wires and a pressing handle 52, an arc groove for accommodating the wires is provided on the loading table 51, a rubber pad 521 is provided at one end of the pressing handle 52 for pressing the wires to prevent the surface of the wires from being lost due to excessive pressing, a handle seat is provided at the lower part of the pressing handle 52, and a spring is provided between the pressing handle 52 and the handle seat to realize engagement between the pressing handle 52 and the handle seat.
The fixing mechanism 6 includes a fixing table and a fixing U-shaped bracket provided on a side wall of the fixing table, wherein a fixing screw is provided on the U-shaped bracket, and the crimp terminal is hung on the fixing screw.
The wire crimping terminal pressing machine has the following using process:
as shown in fig. 1 and 6, fig. 1 is a schematic diagram of the state of the pressing machine when not in operation, and fig. 6 is a schematic diagram of the state of the pressing machine when in operation. Firstly, one end of an electric wire is peeled and then penetrates into a sleeve pipe of the press-fit terminal to be pressed, then the other end of the press-fit terminal penetrating into the electric wire is sleeved on the fixing mechanism 6, the joint of the electric wire and the press-fit terminal is positioned on the fixing working part 31, a cylinder piston rod extends downwards, the rotating working part 32 is pressed downwards, the pressing rod 22 slides to the rear end of the pressing plate 23 along the front end of the pressing plate 23, the spring is in a compressed state, and the rotating working part 32 simultaneously rotates around the joint of the rotating working part 32 and the fixing working part 31 and is meshed with the fixing working part 31, so that the electric wire is pressed and connected with the press-fit terminal. After the press-connection is completed, the cylinder piston rod is retracted, the rotation shaft 27 is rolled toward the front end of the pressing plate 23, the spring is in a stretched state, and the rotation working portion 32 is separated from the fixed working portion 31.
Note that the basic principles and main features of the present invention and advantages of the present invention are shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, but rather, the foregoing embodiments and description illustrate the principles of the invention, and that various changes and modifications may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a wire crimping terminal pressfitting machine, its characterized in that includes frame (1), be provided with elevating system (2) in frame (1), elevating system (2) are connected with pressing mechanism (3), frame (1) bottom is provided with workstation (4), still be provided with hold-down mechanism (5) and fixed establishment (6) of fixed crimping terminal that fixed electric wire was used on workstation (4), pressing mechanism (5) and fixed establishment (6) are set up respectively to pressing mechanism (3) both sides;
the pressing mechanism (3) comprises a fixed working part (31) and a rotary working part (32), the fixed working part (31) is fixedly arranged between the pressing mechanism (5) and the fixing mechanism (6) through a pressing support frame (33), one end of the rotary working part (32) is rotatably arranged on the pressing support frame (33), and the pressing support frame (33) is fixedly arranged on the workbench (4); the rotary working part (32) is connected with the lifting mechanism (2) and rotates along with the up-and-down motion of the lifting mechanism (2);
the fixed working part (31) is provided with a first groove (311) capable of containing the crimping terminal, the fixed working part (31) is of a circular structure, the rotating working part (32) corresponds to the first groove (311) in the fixed working part (31) is provided with a second groove (321), and the first groove (311) and the second groove (321) are arc-shaped structure grooves.
2. The wire crimping terminal pressing machine as claimed in claim 1, wherein the lifting mechanism (2) comprises a first connecting rod (21) connected with a rotary working part (32) and a pressing rod (22), one end of the first connecting rod (21) is connected with the rotary working part (32), the other end of the first connecting rod is connected with the pressing rod (22), a pressing plate (23) is arranged on the top of the pressing rod (22) in a contact manner, the pressing plate (23) is connected with the pressing rod (22) through a telescopic mechanism (24), and the telescopic mechanism (24) is connected with one end, close to the rotary working part (32), of the pressing rod (22);
the top of the pressing plate (23) is connected with a driving mechanism (25), and the driving mechanism (25) is arranged on the frame (1).
3. The wire crimping terminal press as claimed in claim 2, wherein one end of the pressing rod (22) and the pressing plate (23) contacting each other is further provided with a rotatable rotating shaft (27), the bottom of the pressing plate (23) is further provided with a first receiving groove (231), the width of the first receiving groove (231) is the same as the height of the rotating shaft (27) in the axial direction, and the top of the rotating shaft (27) is located in the first receiving groove (231).
4. The wire crimping terminal press as claimed in claim 2, wherein a rotating rod (26) is further provided between the first connecting rod (21) and the press supporting frame (33), one end of the rotating rod (26) is rotatably connected with the press supporting frame (33), and the other end of the rotating rod (26) is rotatably connected with the first connecting rod (21).
5. The wire crimping terminal lamination machine according to any one of claims 2 to 4, characterized in that at least one first limit post (7) is further provided between the pressing plate (23) and the top plate (11) of the frame (1), and the first limit post (7) is fixedly provided on the top plate (11).
6. The wire crimping terminal press as claimed in claim 5, wherein a guide post (8) is further provided between the table (4) and the top plate (11), and the guide post (8) passes through the pressing plate (23) so that the pressing plate (23) slides up and down along the guide post (8).
7. The wire crimping terminal press as claimed in claim 6, wherein a second accommodation groove (41) is further provided on the table (4), the press supporting frame (33) is fixedly provided in the second accommodation groove (41), the press supporting frames (33) are symmetrically provided, and the fixed working portion (31) and the rotary working portion (32) are provided between the two press supporting frames (33).
8. The wire crimping terminal lamination machine according to claim 7, characterized in that the workbench (4) is further provided with at least one second limit post (9), the second limit post (9) being located below the pressing plate (23).
9. The wire crimping terminal pressing machine according to claim 8, wherein the pressing mechanism (5) comprises a carrying table (51) for carrying the wire and a pressing handle (52), an arc-shaped groove for accommodating the wire is formed in the carrying table (51), and a rubber cushion block (521) is arranged at one end of the pressing handle (52) for pressing the wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707154.3A CN107706692B (en) | 2016-08-23 | 2016-08-23 | Wire crimping terminal pressfitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707154.3A CN107706692B (en) | 2016-08-23 | 2016-08-23 | Wire crimping terminal pressfitting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107706692A CN107706692A (en) | 2018-02-16 |
| CN107706692B true CN107706692B (en) | 2023-12-19 |
Family
ID=61168957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610707154.3A Active CN107706692B (en) | 2016-08-23 | 2016-08-23 | Wire crimping terminal pressfitting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107706692B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980482A (en) * | 2019-03-26 | 2019-07-05 | 昆山沃达电子科技有限公司 | A kind of wire terminal thread depressing mechanism |
| CN110434591A (en) * | 2019-08-05 | 2019-11-12 | 深圳市盛格纳电子有限公司 | A kind of riveting press equipment |
| CN112936934B (en) * | 2021-01-29 | 2022-08-23 | 重庆嘉涌电子有限公司 | VR spectacle-frame system of processing |
| CN113161841B (en) * | 2021-04-25 | 2022-11-18 | 长春汽车工业高等专科学校 | Insulated conductor binding post pressfitting machine |
| CN116387927B (en) * | 2023-03-31 | 2023-08-18 | 江苏恒安电力工具有限公司 | Temporary connection device for low-voltage wires |
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| Publication number | Publication date |
|---|---|
| CN107706692A (en) | 2018-02-16 |
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