CN111618199B - Two-end bending device for copper wire production - Google Patents

Two-end bending device for copper wire production Download PDF

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Publication number
CN111618199B
CN111618199B CN202010392860.XA CN202010392860A CN111618199B CN 111618199 B CN111618199 B CN 111618199B CN 202010392860 A CN202010392860 A CN 202010392860A CN 111618199 B CN111618199 B CN 111618199B
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China
Prior art keywords
base
rod
concave
rods
sliding
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CN202010392860.XA
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CN111618199A (en
Inventor
杨东
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Hunan Zhanzhuo New Material Technology Co ltd
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Hunan Zhanzhuo New Material Technology Co ltd
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Priority to CN202010392860.XA priority Critical patent/CN111618199B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F1/00Bending wire other than coiling; Straightening wire
    • B21F1/004Bending wire other than coiling; Straightening wire by means of press-type tooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F23/00Feeding wire in wire-working machines or apparatus

Abstract

The invention relates to a bending device, in particular to a two-end bending device for copper wire production. The invention aims to solve the technical problem of how to provide a two-end bending device for producing copper wires, which can automatically place copper wires for bending and can simultaneously bend a plurality of copper wires. A two-end bending device for copper wire production comprises a base, a bending device and a bending device, wherein the base is used for mounting the whole device; the transmission assembly is arranged on the base and is used for transmitting the copper wire by providing power through the motor; a collecting frame placed on the base; the bending assembly is placed and installed on the conveying assembly and the base, and the copper wire needing to be bent is bent and placed in a sliding mode. According to the invention, the sector gear is matched with the pinion, so that the copper wires can be automatically transmitted without manual movement, the pressing block is matched with the concave rod, so that a plurality of copper wires can be stably bent, and the working efficiency is improved.

Description

Two-end bending device for copper wire production
Technical Field
The invention relates to a bending device, in particular to a two-end bending device for copper wire production.
Background
Copper line, in the life, practical copper line is as the wire. Electric conductivity is fine, is used for making copper line, cable, brush etc. in a large number, and the heat conductivity is good, is used for making magnetic instrument, the instrument that must antimagnetic disturbance commonly, like compass, aeronautical instrument etc. and plasticity is fabulous, easily hot pressing and cold pressure processing, at the in-process to the processing of segment copper line, in order to let copper line direct mount on ammeter or air switch, need buckle to the copper line.
Patent publication No. is CN 107255105U's patent has announced a flat type copper line device of buckling, the flat type copper line device of buckling includes that first device and the second of buckling buckles the device, first device of buckling is used for realizing the flat type copper line's plane is buckled, the second is buckled the device and is used for realizing the vertical bending of flat type copper line can process out the flat type copper line structure that satisfies the motor demand to the machining precision is high, further improves the performance of motor, and the device buckles the in-process of copper line, needs the people to place the copper line on the part of buckling, once can only buckle to a copper line simultaneously.
Therefore, need research and development a can place the copper line automatically and buckle, can buckle the both ends device of buckling of copper line production usefulness to many copper lines simultaneously.
Disclosure of Invention
In order to overcome the defects that the existing copper wire bending mode needs to manually place copper wires for bending and only one copper wire can be bent at a time, the invention has the technical problems that: the utility model provides a can place the copper line automatically and buckle, can buckle the both ends device of buckling of copper line production usefulness to many copper lines simultaneously.
The technical implementation scheme of the invention is as follows: the utility model provides a device is buckled at both ends of copper line production usefulness, including: the base is used for mounting the whole device; the transmission assembly is arranged on the base and is used for transmitting the copper wire by providing power through the motor; a collecting frame placed on the base; the bending assembly is placed and installed on the conveying assembly and the base, and the copper wire needing to be bent is bent and placed in a sliding mode.
In a preferred embodiment of the present invention, the transfer module comprises: the speed reducing motor is arranged on the base; the sector gear is arranged on an output shaft of the speed reducing motor; the two conveying wheels are rotatably arranged on the base; the conveying belt is arranged between the conveying wheels; the two pinions are arranged on the conveying wheel and the base, and the sector gear is meshed with the pinion on one side.
In a preferred embodiment of the present invention, the bending member comprises: the supporting rod is arranged on the base; the two telescopic rods are symmetrically arranged on the supporting rod; the connecting plate is arranged between the end parts of the telescopic rods; the first spring is arranged between the telescopic rod and the connecting plate; at least two pressing blocks are arranged on the connecting plate; concave pole, concave pole quantity is the same with briquetting quantity, installs on the conveyer belt, and briquetting and concave pole cooperation, standing groove are two, and the symmetry formula is opened on the concave pole.
In a preferred embodiment of the present invention, the method further comprises: the number of the first concave blocks is the same as that of the pressing blocks, and the first concave blocks are arranged on the concave rod; the number of the first convex blocks is the same as that of the pressing blocks, and the first convex blocks are arranged on the concave rod; the material storage frame is arranged on the base; the two baffles are arranged on the material storage frame; the second spring is arranged between the material storage frame and the baffle; the hollow rods are arranged on the material storage frame in two groups, one group is formed by two hollow rods; the sliding rod is slidably mounted on the hollow rod; the third spring is arranged between the hollow rod and the sliding rod; the second convex block is arranged on the sliding rod; and the second concave block is arranged between the slide bars.
In a preferred embodiment of the present invention, the method further comprises: the guide rod is arranged on the base; the moving rod is arranged on the guide rod in a sliding mode and is connected with the connecting plate; the fourth spring is arranged between the guide rod and the movable rod; the first wedge-shaped block is arranged on the movable rod; the sliding plate is arranged on the base in a sliding manner; the convex block is arranged on the sector gear and matched with the sliding plate; the number of the fifth springs is two, and the fifth springs are arranged between the sliding plate and the base; and the second wedge block is arranged on the sliding plate and matched with the first wedge block.
The invention has the beneficial effects that: according to the invention, the fan-shaped gear is matched with the pinion, so that copper wires can be automatically transmitted without manual movement, the pressing block is matched with the concave rod, so that a plurality of copper wires can be stably bent, the working efficiency is improved, the first convex block and the second convex block are matched, so that the copper wires can be automatically blanked without manual placement, and the copper wires can be automatically bent without manual pushing due to the matching of the first wedge block and the second wedge block.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic view of a first partial body structure according to the present invention.
FIG. 3 is a schematic view of a second partial body structure according to the present invention.
Fig. 4 is a perspective view of a third embodiment of the present invention.
Fig. 5 is a schematic perspective view of the present invention a.
The parts are labeled as follows: the automatic feeding device comprises a base 1, a speed reducing motor 2, a sector gear 3, a conveying wheel 4, a conveying belt 5, a pinion 6, a collecting frame 7, a support rod 8, a telescopic rod 9, a connecting plate 10, a first spring 11, a pressing block 12, a concave rod 13, a placing groove 14, a first concave block 15, a first convex block 16, a storage frame 17, a baffle 18, a second spring 19, a hollow rod 20, a sliding rod 21, a third spring 22, a second convex block 23, a second concave block 24, a guide rod 25, a movable rod 26, a fourth spring 27, a first wedge-shaped block 28, a sliding plate 29, a convex block 291, a fifth spring 30 and a second wedge-shaped block 31.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
The utility model provides a device is buckled at both ends of copper line production usefulness, as shown in fig. 1-3, including base 1, conveying subassembly, collect frame 7 and place the subassembly of buckling, base 1 is used for installing whole equipment, and conveying subassembly installs on base 1, provides power through the motor and carries out the conveying of copper line, collects frame 7 and places in base 1 left side, places the subassembly of buckling and installs on conveying subassembly and base 1, buckles and places the copper line that needs buckle through the slip mode.
As shown in fig. 1, the conveying assembly comprises a speed reducing motor 2, a sector gear 3, two conveying wheels 4, two conveying belts 5 and pinions 6, wherein the speed reducing motor 2 is mounted on the left side of the top of the base 1 through bolts, the sector gear 3 is mounted on an output shaft of the speed reducing motor 2, the conveying wheels 4 are mounted on the left side and the right side of the base 1 in a rotating mode, the conveying belts 5 are wound between the conveying wheels 4, the pinions 6 are meshed with each other, the pinions 6 on the left side are mounted at the front end of the conveying wheel 4 on the left side, the pinions 6 on the right side are rotatably mounted on the base 1, and the pinions 6 on the right side are meshed with the sector gear 3.
As shown in fig. 1-3, the bending component includes a supporting rod 8, two telescopic rods 9, a connecting plate 10, a first spring 11, a pressing block 12 and a concave rod 13, the supporting rod 8 is welded on the right side of the base 1, the two telescopic rods 9 are welded on the upper portion of the rear side of the supporting rod 8 in a bilateral symmetry manner, the connecting plate 10 is welded between the rear ends of the telescopic rods 9, the first spring 11 is installed between the telescopic rods 9 and the connecting plate 10, the three pressing blocks 12 are welded on the rear side of the connecting plate 10, the number of the concave rods 13 is the same as that of the pressing blocks 12, the pressing blocks 12 are installed on the conveying belt 5 and matched with the concave rods 13, and the concave rods 13 are symmetrically provided with placing grooves 14.
The specific operation flow of the above embodiment: when needs buckle to the copper line, place the copper wire earlier in placing the subassembly of buckling, then promote to place the subassembly of buckling and buckle the copper line, the copper line that finishes of buckling falls in collecting frame 7 after the conveying of conveying subassembly, after finishing buckling all copper lines, closes conveying subassembly, then will collect the copper line collection that finishes of buckling in the frame 7 can.
After finishing placing the copper line, start gear motor 2 anticlockwise rotation, drive 3 anticlockwise rotations of sector gear, drive 6 clockwise rotations of pinion on right side, and then drive 6 contrary needles rotations of left pinion, drive 4 anticlockwise rotations of left side delivery wheel, drive 4 anticlockwise rotations of right side delivery wheel through conveyer belt 5, thereby it removes left to drive to place the subassembly of buckling, when sector gear 3 breaks away from with pinion 6, pinion 6 and last device stall, when finishing buckling copper line whole, close gear motor 2, so, can carry out automatic transmission to the copper line, need not artifical manual and remove the copper line.
Before needs buckle to the copper line, place the copper line in standing groove 14 earlier, drive 12 rear sides of briquetting with spill pole 13 through conveyer belt 5, then promote connecting plate 10 rearward movement, drive the extension of telescopic link 9, first spring 11 is tensile, and then drive 12 rearward movements of briquetting and buckle the copper line, after finishing buckling to the copper line, loosen connecting plate 10, drive connecting plate 10 and the upper segment device forward movement reset under the effect of first spring 11, so, can carry out stable the buckling to many copper lines, and the work efficiency is improved.
Example 2
On the basis of the embodiment 1, as shown in fig. 1, 2, 4 and 5, the storage device further comprises a first concave block 15, a first convex block 16, a storage frame 17, a baffle plate 18, a second spring 19, a hollow rod 20, a sliding rod 21, a third spring 22, a second convex block 23 and a second concave block 24, wherein the number of the first concave blocks 15 is the same as that of the pressing blocks 12, the first concave blocks are welded on the left side of the concave rod 13, the number of the first convex blocks 16 is the same as that of the pressing blocks 12, the first convex blocks are welded on the right side of the concave rod 13, the storage frame 17 is fixedly connected to the right side of the top of the base 1 through bolts, the baffle plates 18 are two, the second spring 19 is arranged between the storage frame 17 and the baffle plate 18, the hollow rods 20 are two groups, the two hollow rods are one group, the hollow rods are welded on the front side and the rear side of the storage frame 17, the sliding rod 21 is arranged between the hollow rods 20, the third spring 22 is arranged between the hollow rods 20 and the sliding rod 21, a second male block 23 is welded between the left sides of the slide bars 21 and a second female block 24 is welded between the right sides of the slide bars 21.
As shown in fig. 1 and 3, the sliding type wedge-shaped gear further comprises a guide rod 25, a moving rod 26, a fourth spring 27, a first wedge-shaped block 28, a sliding plate 29, a projection 291, a fifth spring 30 and a second wedge-shaped block 31, wherein the guide rod 25 is welded on the middle rear side of the top of the base 1, the moving rod 26 is slidably mounted on the guide rod 25, the fourth spring 27 is mounted between the guide rod 25 and the moving rod 26, the top end of the moving rod 26 is welded with the connecting plate 10, the first wedge-shaped block 28 is welded on the bottom end of the moving rod 26, the sliding plate 29 is slidably mounted on the front left side of the top of the base 1, the projection 291 is mounted on the sector gear 3, the projection 291 is matched with the sliding plate 29, the fifth springs 30 are welded between the sliding plate 29 and the base 1, the second wedge-shaped block 31 is welded on the right side of the sliding plate 29, and the second wedge-shaped block 31 is matched with the first wedge-shaped block 28.
The specific operation flow of the above embodiment: before the copper wire is bent, the copper wire to be bent is placed in the storage frame 17, when the concave rod 13 moves leftwards, the first convex block 16 and the first concave block 15 are driven to move leftwards, when the first convex block 16 and the first concave block 15 are respectively contacted with the second concave block 24 and the second convex block 23, the second concave block 24 and the second convex block 23 are driven to move upwards, the third spring 22 is compressed, meanwhile, the baffle 18 is driven to slide outwards, the second spring 19 is compressed, the copper wire placed in the storage frame 17 falls on the concave rod 13 at the moment, when the first convex block 16 is separated from the second concave block 24, the slide rod 21 and the upper device of the slide rod are driven to move downwards to reset under the action of the third spring 22, meanwhile, the baffle 18 is driven to slide inwards to reset under the action of the second spring 19, and therefore, automatic blanking can be automatically performed on the copper wire without manual placement.
When the sector gear 3 rotates counterclockwise, the projection 291 rotates counterclockwise, when the projection 291 contacts with the sliding plate 29, the sliding plate 29 is pushed to slide rightward, the fifth spring 30 is stretched, the second wedge 31 is driven to move rightward, the first wedge 28 is driven to move backward, the moving rod 26 is driven to slide backward, the fourth spring 27 is compressed, the moving rod 26 drives the connecting plate 10 and the pressing block 12 to move backward to bend the copper wire, when the projection 291 is separated from the sliding plate 29, the sliding plate 29 and the upper device thereof are driven to move leftward and reset under the action of the fifth spring 30, and meanwhile, the moving rod 26 and the upper device thereof are driven to move forward and reset under the action of the fourth spring 27, so that the copper wire can be bent automatically without manual pushing.
While the disclosure has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the invention should be limited only by the attached claims.

Claims (2)

1. The utility model provides a device is buckled at both ends of copper line production usefulness, characterized by, including:
the base is used for mounting the whole device;
the transmission assembly is arranged on the base and is used for transmitting the copper wire by providing power through the motor;
a collecting frame placed on the base;
the bending component is arranged on the conveying component and the base, and is used for bending and placing the copper wire to be bent in a sliding mode;
the conveying assembly comprises:
the speed reducing motor is arranged on the left side of the top of the base;
the sector gear is arranged on an output shaft of the speed reducing motor;
the two conveying wheels are rotatably arranged on the left side and the right side of the base;
the conveying belt is arranged between the conveying wheels;
the two pinions are meshed with each other, the left pinion is arranged at the front end of the left conveying wheel, the right pinion is rotatably arranged on the base, and the sector gear is meshed with the right pinion;
placing the bending component comprises:
the supporting rod is arranged on the right side of the base;
the two telescopic rods are symmetrically arranged at the upper part of the rear side of the supporting rod in a left-right mode;
the connecting plate is arranged between the rear ends of the telescopic rods;
the first spring is arranged between the telescopic rod and the connecting plate;
at least two pressing blocks are arranged on the rear side of the connecting plate;
the number of the concave rods is the same as that of the pressing blocks, the concave rods are arranged on the conveyer belt, the pressing blocks are matched with the concave rods, two placing grooves are formed, and the concave rods are symmetrically arranged on the left and right sides;
also includes:
the first concave blocks, the number of which is the same as that of the pressing blocks, are arranged on the left side of the concave rod;
the number of the first convex blocks is the same as that of the pressing blocks, and the first convex blocks are arranged on the right side of the concave rod;
the material storage frame is arranged on the right side of the top of the base;
the two baffles are arranged at the bottom of the material storage frame in a sliding manner;
the second spring is arranged between the material storage frame and the baffle;
the hollow rods are divided into two groups, namely one group, and are arranged on the front side and the rear side of the material storage frame;
the sliding rods are slidably arranged between each group of hollow rods;
the third spring is arranged between the hollow rod and the sliding rod;
the second convex block is arranged between the left sides of the sliding rods;
and the second concave block is arranged between the right sides of the sliding rods.
2. The double-end bending device for producing the copper wire according to claim 1, which is characterized by further comprising:
the guide rod is arranged on the rear side of the middle of the top of the base;
the moving rod is arranged on the guide rod in a sliding mode, and the top end of the moving rod is connected with the connecting plate;
the fourth spring is arranged between the guide rod and the movable rod;
the first wedge-shaped block is arranged at the bottom end of the movable rod;
the sliding plate is arranged in front of the left side of the top of the base in a sliding manner;
the convex block is arranged on the sector gear and matched with the sliding plate;
the number of the fifth springs is two, and the fifth springs are arranged between the sliding plate and the base;
and the second wedge block is arranged on the right side of the sliding plate and is matched with the first wedge block.
CN202010392860.XA 2020-05-11 2020-05-11 Two-end bending device for copper wire production Active CN111618199B (en)

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Application Number Priority Date Filing Date Title
CN202010392860.XA CN111618199B (en) 2020-05-11 2020-05-11 Two-end bending device for copper wire production

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Application Number Priority Date Filing Date Title
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CN111618199B true CN111618199B (en) 2022-04-29

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112264773B (en) * 2020-09-22 2022-06-07 苏州苏驼通信科技股份有限公司 Automatic equipment that puts down of switch wiring panel equipment material
CN112792184B (en) * 2020-12-23 2024-04-02 芜湖国天汽车零部件制造有限公司 Bidirectional bending machine for batch copper bars
CN113926950B (en) * 2021-10-19 2023-06-06 海南马良师傅网络科技有限公司 Laboratory equipment maintenance is with resistance equipment of buckling in batches

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206747357U (en) * 2016-12-12 2017-12-15 唐留春 A kind of high efficiency synchronous bending part diel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0656869B2 (en) * 1986-03-04 1994-07-27 ロ−ム株式会社 Lead bend method and device in manufacturing process of electronic device
KR101394257B1 (en) * 2012-08-06 2014-05-13 김강환 Auto bending machine for wire
CN103817267B (en) * 2014-03-05 2015-09-23 张翠翠 With the stove silk bending process of screw clamping device and integrated circuit controller
CN107150076B (en) * 2017-06-23 2019-08-23 芜湖德丰汽车零部件有限公司 A kind of horizontal automatic continuous apparatus for bending
CN207308641U (en) * 2017-09-11 2018-05-04 天津龙驰机械制造股份有限公司 A kind of new and effective bending device
CN209094246U (en) * 2018-12-04 2019-07-12 江西恒茂五金制品有限公司 Apparatus for bending is used in a kind of processing of stainless steel products
CN209520300U (en) * 2019-01-17 2019-10-22 常德鼎城荣泰机械制造有限公司 A kind of process equipment of arch steel
CN110102666B (en) * 2019-04-27 2020-06-09 临海市创宇工艺有限公司 Metal wire cutting assembly line
CN210188112U (en) * 2019-05-08 2020-03-27 河北普阳钢铁有限公司 Steel bending device
CN210253684U (en) * 2019-05-30 2020-04-07 安徽润恒实业有限公司 Metal part pressing and bending device for door and window manufacturing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206747357U (en) * 2016-12-12 2017-12-15 唐留春 A kind of high efficiency synchronous bending part diel

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