CN108288770B - Narrow-end terminal, narrow-end terminal production method and special flaring device - Google Patents
Narrow-end terminal, narrow-end terminal production method and special flaring device Download PDFInfo
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- CN108288770B CN108288770B CN201810117644.7A CN201810117644A CN108288770B CN 108288770 B CN108288770 B CN 108288770B CN 201810117644 A CN201810117644 A CN 201810117644A CN 108288770 B CN108288770 B CN 108288770B
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- narrow
- pipe
- flaring
- production method
- connecting part
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/26—End pieces terminating in a screw clamp, screw or nut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
- B21D41/026—Enlarging by means of mandrels
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
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- 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
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Processing Of Terminals (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention discloses a narrow-end terminal, a narrow-end terminal production method and a special flaring device, and the technical scheme comprises the following steps: a wire pressing part which is cylindrical and has a cavity in which a power supply wire and a cable are inserted in the middle; a connecting part which is flat, is continuous between two sides of two end surfaces and is provided with a bolt hole in the middle. Narrow head terminal, its characterized in that: an excessive inclined surface is formed between the pressure wire part and the connecting part, and an observation port communicated with the inner cavity of the pressure wire part is arranged on the inclined surface. Narrow head terminal, its characterized in that: the narrow-end terminal is made of a copper pipe. The following advantages are: the invention skillfully adopts the mode of flaring two ends of the copper pipe to produce the narrow-end terminal, and like the copper pipe connecting terminal which is suitable for the electric wire or the cable with the number of 70 square meters, the invention can ensure the smooth penetration (D =13 mm) of the electric wire or the cable with the number of 70 square meters, and can meet the pressure welding requirement (D =17 mm), and can ensure that the width w of the connecting part is less than 24.4mm (20 mm).
Description
Technical Field
The invention relates to a connecting terminal, in particular to a narrow-head connecting terminal.
Background
The structure of the wiring terminal comprises a wire pressing part and a connecting part, wherein the wire pressing part is cylindrical, an inner cavity for inserting a power supply wire or a cable is formed in the middle of the wire pressing part, the connecting part is flat, and a bolt hole is formed in the middle of the connecting part.
The width of the traditional connecting terminal is determined by the diameter of a copper pipe after being flattened, and the larger the diameter of the copper pipe is, the wider the copper pipe is after being stamped. For example: the copper pipe connecting terminal suitable for the electric wire or the cable with the number of 70 square meters is produced, the inner diameter D of a copper pipe of the copper pipe is generally equal to 13mm, the electric wire or the cable can be smoothly penetrated, the outer diameter D of the copper pipe is generally equal to 17mm (namely, the wall thickness =2 mm), the pressing line part can be guaranteed not to be broken after being pressed, and the requirement of the tensile force of the electric wire or the cable and the terminal after being pressed can be met. The width w of the connection part after being flattened is certainly larger than or equal to 24.4mm when the copper tube connecting terminal with the outer diameter D =17mm and the inner diameter D =13mm is produced conventionally. The wiring terminal with the width can not meet the requirements of electric equipment and new energy automobiles which have higher and higher requirements on space saving at present.
Traditionally, people usually adopt a cutting mode to narrow two sides of the connecting part for producing the narrow-head terminal, and the production mode has the defects that: 1. both sides of the cut connection part are broken, resulting in a reduction in the strength of the connection part; 2. the machining is very cumbersome and the cost is very high.
Disclosure of Invention
The invention aims to provide a narrow-head terminal and a production method thereof.
In order to solve the above problems, the technical scheme adopted by the invention comprises:
a wire pressing part which is cylindrical and has a cavity in which a power supply wire and a cable are inserted in the middle;
a connecting part which is flat, is continuous between two sides of two end surfaces and is provided with a bolt hole in the middle.
Narrow head terminal, its characterized in that: and a transitional inclined surface is formed between the line pressing part and the connecting part, and an observation port communicated with the inner cavity of the line pressing part is arranged on the inclined surface.
Narrow head terminal, its characterized in that: the narrow-end terminal is made of a copper pipe.
A method of producing the narrow-headed terminal described above, comprising the steps of:
step 1), cutting a pipe: cutting the pipe into the length required by the corresponding narrow-end terminal;
step 2), chamfering: chamfering the inside and outside of the pipe of the cut pipe;
step 3), flaring: flaring two ends of the pipe by using a flaring device to form a crimping part;
step 4), heat treatment: carrying out heat treatment on the pipe after flaring;
step 5), pressing: pressing the middle section of the pipe subjected to heat treatment to form a connecting part and an inclined surface;
step 6), cleaving: splitting a connecting part formed in the middle section of the pipe from the middle;
step 7), punching: and punching the middle of the connecting part to form a bolt hole, thereby manufacturing two narrow-head terminals.
The production method of the narrow-head terminal is characterized in that: and step 6) and step 7) are synchronously finished.
The production method of the narrow-head terminal is characterized in that: and step 5), step 6) and step 7) are synchronously finished.
The production method of the narrow-head terminal is characterized in that: in the step 3), the diameters of the two ends of the pipe are enlarged by 20-30%.
The production method of the narrow-head terminal is characterized in that: and 7), punching the middle of the connecting part and synchronously finishing punching of the observation port on the inclined surface.
The production method of the narrow-head terminal is characterized in that: further comprising the step 8) of electroplating: the obtained narrow-end terminal is subjected to electroplating treatment.
The production method of the narrow-head terminal is characterized in that: the flaring device comprises a rack, flaring dies and a conical flaring core, wherein the rack is arranged above the rack and used for fixing a pipe, the flaring dies are arranged on two sides of the rack and pushed by oil cylinders, and the conical flaring core is arranged at the front ends of the flaring dies.
The narrow-end terminal and the production method have the following advantages: the invention skillfully adopts a mode of flaring two ends of the copper pipe to produce the narrow-end terminal, and is also suitable for the copper pipe connecting terminal of the electric wire or the cable with the number of 70 square meters, thus not only ensuring the electric wire or the cable with the number of 70 square meters to smoothly penetrate (D =13 mm) and meeting the crimping requirement (D =17 mm), but also ensuring the width w of the connecting part to be less than 24.4mm (20 mm), and also producing the copper pipe terminal with the smaller width w of the connecting part according to the requirement, thereby solving the problem of space saving of new energy automobiles and electrical equipment. In addition, the produced connecting terminal has a continuous structure between two sides of two end faces of the connecting part, so that the connecting strength is greatly improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a front view of a narrow-headed terminal of the present invention;
FIG. 2 is a bottom or top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a schematic view of a process flow for producing a narrow-tip terminal according to the present invention;
FIG. 5 is a schematic diagram of the specification for producing a narrow-headed terminal according to the present invention;
fig. 6 is a schematic structural view of the flaring device of the present invention.
Detailed Description
Example 1:
as shown in fig. 1 to 3, the narrow-end terminal of the present invention is made of a copper tube, and has a structure including: the cable crimping device comprises a crimping part 1 and a connecting part 3, wherein the crimping part 1 is cylindrical, and an inner cavity 2 for inserting a power supply wire or a cable is arranged in the middle of the crimping part 1; the connecting part is flat, the two sides of the upper end surface and the lower end surface are continuous, and the middle of the connecting part is provided with a bolt hole 4. After the wire or the cable is inserted into the inner cavity of the wire pressing part, the wire pressing part is clamped through a clamp, so that the wire or the cable is fixed on the wire pressing part, and the wire or the cable is connected with a connection object through arranging a bolt in a bolt hole of the connection part.
Furthermore, a transitional inclined surface 5 is formed between the crimping portion and the connecting portion, and an observation port 6 communicated with the inner cavity of the crimping portion is arranged on the inclined surface. The insertion position of the wire or cable can be observed through the observation port 6, so that whether the wire or cable is inserted in place or not can be known.
Example 2:
as shown in fig. 4 to 6, a method of producing a narrow-end terminal according to example 1 of the present invention is exemplified by producing a copper pipe terminal suitable for a wire or cable of 70 square meters, i.e., it is required that an inner diameter D =13mm and an outer diameter D =17mm (i.e., a wall thickness =2 mm) of a crimping portion. Before processing, selecting a copper pipe with the inner diameter of 10mm and the wall thickness of 2-3mm (determined according to the compression ratio of a flaring device) for later use, and then completing the production by the following steps:
step 1), cutting a pipe: the copper pipe is cut into the length required by the corresponding narrow-end terminal, and because the two narrow-end terminals are simultaneously produced, the copper pipe is cut into 2 times of the corresponding narrow-end terminal, for example, the length L of the narrow-end terminal with 57mm is produced, and the length of the copper pipe is cut into 114 mm. Because cold extrusion flaring is adopted, the two ends of the copper pipe are respectively compressed by about 7-10% in the flaring process, so the length of the copper pipe needs to be properly lengthened.
Step 2), chamfering: the inner pipes at the two ends of the cut copper pipe are subjected to outer chamfering for 45 degrees through the chamfering mechanism, and simultaneously deburring can be carried out, so that wires or cables can be better penetrated.
Step 3), flaring: flaring is carried out to the both ends of copper pipe through flaring device, make it form line ball portion, specifically adopt the cold extrusion mode to carry out the flaring, fix the copper pipe with fixed mould 7 that sets up in the frame top earlier, promote flaring mould 9 with hydro-cylinder 8 that sets up in frame both sides, make the flaring core 10 (the diameter is 13 mm's taper rod promptly) of flaring mould front end insert the copper pipe both ends, enlarge the internal diameter at copper pipe both ends to 13mm, owing to adopt the cold extrusion flaring, at the in-process of flaring, the copper pipe both ends can be compressed, can make its wall thickness increase, consequently, the terminal wall thickness that obtains also is about 2mm (allow the error in the certain range).
Step 4), heat treatment: and (3) carrying out heat treatment on the flared copper pipe, specifically heating for 1 minute within the temperature range of 600-800 ℃ to soften the copper pipe so as to facilitate pressing.
Step 5), pressing: and pressing the middle section of the copper pipe subjected to heat treatment by using a stamping die, so that the upper pipe wall and the lower pipe wall of the copper pipe are overlapped to form a connecting part, and meanwhile, a transitional inclined plane is formed between the connecting part and the line pressing part.
Step 6), cleaving: and the connecting part formed at the middle section of the pipe is split from the middle by a stamping die.
Step 7), punching: and punching the middle of the connecting part by a punching die to form a bolt hole, thereby manufacturing the two narrow-end terminals.
The steps 5), 6) and 7) may be completed sequentially or synchronously.
In the step 3), it is most desirable to enlarge the diameters of both ends of the copper material by 20 to 30%. The requirements of caliber and wall thickness can be met.
In the step 5), the middle section of the pipe is pressed, and the punching of the observation port on the inclined surface is synchronously completed. The shape of the observation port is square or round, etc.
The method also comprises the step 8) and electroplating: the obtained narrow-end terminal is subjected to electroplating treatment, thereby playing a role in preventing metal oxidation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are included in the scope of the present invention.
Claims (7)
1. A production method of a narrow-end terminal comprises a crimping part (1) and a connecting part (3), wherein the crimping part (1) is cylindrical, and an inner cavity (2) for inserting a power supply wire or a cable is arranged in the middle of the crimping part; the connecting part (3) is flat, two sides of two end faces of the connecting part are continuous, and a bolt hole (4) is formed in the middle of the connecting part; a transitional inclined surface (5) is formed between the crimping part (1) and the connecting part (3), and an observation port (6) communicated with an inner cavity of the crimping part is arranged on the inclined surface (5), and the production method is characterized by comprising the following steps:
step 1), selecting materials: selecting a pipe with the inner diameter smaller than the inner diameter of the line pressing part of the narrow-head terminal to be actually produced for standby;
step 2), pipe cutting: cutting the tube into lengths required for producing corresponding narrow-end terminals;
step 3), chamfering: chamfering the inside and outside of the pipe of the cut pipe;
step 4), flaring: flaring is carried out on two ends of the pipe through a flaring device, so that the inner diameter of a line pressing part of a narrow-end terminal to be actually produced is achieved;
step 5), heat treatment: carrying out heat treatment on the pipe after flaring;
step 6), pressing: pressing the middle section of the pipe subjected to heat treatment to form a connecting part and an inclined surface;
step 7), cleaving: splitting a connecting part formed in the middle section of the pipe from the middle;
step 8), punching: and punching the middle of the connecting part to form a bolt hole, thereby manufacturing two narrow-head terminals.
2. The production method of a narrow-headed terminal according to claim 1, characterized in that: and step 6) and step 7) are synchronously finished.
3. The production method of a narrow-headed terminal according to claim 1, characterized in that: and step 5), step 6) and step 7) are synchronously finished.
4. The production method of a narrow-headed terminal according to claim 1, characterized in that: in the step 3), the diameters of the two ends of the pipe are enlarged by 20-30%.
5. The production method of a narrow-headed terminal according to claim 1, characterized in that: and in the step 5), the middle section of the pipe is pressed, and simultaneously the punching of the observation port on the inclined surface is finished.
6. The production method of a narrow-headed terminal according to claim 1, characterized in that: further comprising the step 8) of electroplating: the obtained narrow-end terminal is subjected to electroplating treatment.
7. A special flaring device applied to the production method of the narrow-end terminal of claim 1, characterized in that: the flaring device comprises a fixed die (7) arranged above a rack and used for fixing a pipe, flaring dies (9) arranged on two sides of the rack and pushed by oil cylinders (8), and a conical flaring core (10) arranged at the front end of the flaring dies (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810117644.7A CN108288770B (en) | 2018-02-06 | 2018-02-06 | Narrow-end terminal, narrow-end terminal production method and special flaring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810117644.7A CN108288770B (en) | 2018-02-06 | 2018-02-06 | Narrow-end terminal, narrow-end terminal production method and special flaring device |
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| Publication Number | Publication Date |
|---|---|
| CN108288770A CN108288770A (en) | 2018-07-17 |
| CN108288770B true CN108288770B (en) | 2020-03-17 |
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| CN201810117644.7A Active CN108288770B (en) | 2018-02-06 | 2018-02-06 | Narrow-end terminal, narrow-end terminal production method and special flaring device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585143B (en) * | 2020-05-28 | 2021-03-30 | 永固集团股份有限公司 | Punch forming equipment and punch method for wiring terminal |
| JP7111785B2 (en) * | 2020-09-11 | 2022-08-02 | 矢崎総業株式会社 | Female contact manufacturing method |
| CN113500147B (en) * | 2021-09-09 | 2021-11-26 | 艾芦精密机械(江苏)有限公司 | Production system for metal processing and working method thereof |
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| CN202817241U (en) * | 2012-08-02 | 2013-03-20 | 温州市互通电力设备有限公司 | Copper-aluminum combination connector |
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| CN205790460U (en) * | 2016-07-20 | 2016-12-07 | 北京金风科创风电设备有限公司 | Cable binding post and the power cable with this cable binding post |
| CN205790449U (en) * | 2016-04-20 | 2016-12-07 | 浙江君易电力科技有限公司 | Soft state alloy binding post |
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| CN106964710A (en) * | 2017-04-20 | 2017-07-21 | 浙江诚康钢管有限公司 | A kind of pipe expanding device |
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|---|---|---|---|---|
| US7955147B1 (en) * | 2010-03-15 | 2011-06-07 | Zierick Manufacturing Corporation | Surface mount (SMT) crimp terminal and method of securing wire to same |
| CN102082333A (en) * | 2011-01-26 | 2011-06-01 | 中铁建电气化局集团轨道交通器材有限公司 | Connecting terminal for high speed railway electrification contact network |
| CN202050064U (en) * | 2011-05-06 | 2011-11-23 | 凤凰科技集团有限公司 | Peep hole type copper terminal |
| CN202817241U (en) * | 2012-08-02 | 2013-03-20 | 温州市互通电力设备有限公司 | Copper-aluminum combination connector |
| CN203503799U (en) * | 2013-09-26 | 2014-03-26 | 泰兴龙溢端子有限公司 | Bell mouth copper pipe terminal |
| JP3195441U (en) * | 2014-10-23 | 2015-01-22 | 正美 長谷川 | Contact parts for connectors with heat shrink tubing |
| CN205790449U (en) * | 2016-04-20 | 2016-12-07 | 浙江君易电力科技有限公司 | Soft state alloy binding post |
| CN205609762U (en) * | 2016-05-13 | 2016-09-28 | 温州奥锐卡电子科技有限公司 | Binding post colds pressing |
| CN205790460U (en) * | 2016-07-20 | 2016-12-07 | 北京金风科创风电设备有限公司 | Cable binding post and the power cable with this cable binding post |
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| CN108288770A (en) | 2018-07-17 |
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Effective date of registration: 20200212 Address after: 325600 No.202, wei15 Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Applicant after: Yueqing Guosai Technology Development Co., Ltd Address before: No. 20, Yueqing City, Zhejiang, Wenzhou, Zhejiang Applicant before: Xu Jianan |
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