CN107520371A - The scissors pull bar resetting means and repositioning method of cold headers cutting mechanism - Google Patents
The scissors pull bar resetting means and repositioning method of cold headers cutting mechanism Download PDFInfo
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- CN107520371A CN107520371A CN201710623445.9A CN201710623445A CN107520371A CN 107520371 A CN107520371 A CN 107520371A CN 201710623445 A CN201710623445 A CN 201710623445A CN 107520371 A CN107520371 A CN 107520371A
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- China
- Prior art keywords
- pull bar
- scissors
- transmission component
- push rod
- air cavity
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F5/00—Upsetting wire or pressing operations affecting the wire cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a kind of scissors pull bar resetting means of cold headers cutting mechanism and repositioning method, including scissors pull bar, transmission component and reset assembly, scissors pull bar runs through scissors support, the end that one end of scissors pull bar is located at outside scissors support is connected with cutting assemblies, the other end of scissors pull bar stretches out outside scissors support and is fixedly connected with transmission component, the reset assembly is between transmission component and scissors pull bar, and after transmission component driving scissors pull bar moves back and forth, after being stopped with transmission component, the reset assembly can drive transmission component toward transmission component move when the cylinder resetting means that is resetted of opposite direction.The present invention replaces spring stress to reset with air pressure, it is remained uniform force, while can solve the problem that the problem of spring life is short again, finally improves reseting precision.
Description
Technical field
The present invention relates to a kind of homing device of cold headers shear, particularly the scissors pull bar of cold headers cutting mechanism
Resetting means and repositioning method.
Background technology
Cold headers are the special equipments for being specifically used to produce in batches the fasteners such as nut bolt based on pier.Existing cold headers
Overall structure by can functionally be divided into main drive gear, feed mechanism, cutting mechanism, cold-heading molding mechanism and release
Cutting agency etc. five is most of.Cold headers are in wire rod process, metal wire rod quilt in the presence of above-mentioned feed mechanism
Deliver in cutting mechanism, after the shear plate clip of cutting mechanism presets the metal stock of measured length, then by gripping machinery
The metal stock is delivered to and plastic forming is carried out in cold-heading molding mechanism by hand.Metal wire rod cuts in this above-mentioned whole process
During material, the quality for cutting material directly affects the cold-heading plasticity effect in later stage, and current cutting machine structure is as shown in figure 1, its is main
Including scissors support 1, scissors pull bar 2, transmission component 3 and reset assembly 4, scissors pull bar 2 runs through scissors support 1, and scissors is drawn
The end that one end of bar 2 is located at outside scissors support 1 is connected with cutting assemblies 5, and the other end of scissors pull bar 2 stretches out scissors support 1
Outer and be fixedly connected with transmission component 3, reset assembly 4 is fixed on scissors support 1, the reset assembly 4 mainly by
The both sides of scissors pull bar 2 set a spring 4-1 respectively, then by spring 4-1 with being fixed on transmission component 3 and scissors pull bar
Crossbeam 4-2 apical graftings between 2, when being moved by crossbeam 4-2 with the active force of transmission component 3, push the spring 4-1 compressions, and
Drive scissors pull bar 2 to move final control cutting assemblies 5 to work, when transmission component 3 is without active force, the spring 4-1 that is compressed
Reset, promote scissors pull bar 2 to reset, realized and resetted by spring 4-1 so as to realize, but due to spring in by compression process power
Size changes, and discontinuity, easily causes the traffic direction of scissors pull bar 2 to enter line displacement, the final essence for influenceing shearing
Degree, while the short life of spring is, it is necessary to change, it is therefore desirable to improve.
The content of the invention
One kind is provided and replaces spring with cylinder the invention aims to solve above-mentioned the deficiencies in the prior art so that
When resetting, stress is more uniform than spring, and the scissors pull bar of the cold headers cutting mechanism longer compared to its life-span of spring resets
Device and repositioning method.
To achieve these goals, the scissors pull bar resetting means of the cold headers cutting mechanism designed by the present invention, including
Scissors pull bar, transmission component and reset assembly, scissors pull bar run through scissors support, and one end of scissors pull bar is located at scissors support
Outer end is connected with cutting assemblies, and the other end of scissors pull bar stretches out outside scissors support and is fixedly connected with transmission component, institute
State reset assembly be between transmission component and scissors pull bar, and when transmission component driving scissors pull bar move back and forth
Afterwards, after being stopped with transmission component, the reset assembly can drive transmission component toward transmission component move when opposite direction enter
The cylinder resetting means that row resets.
Existing spring reset has been substituted for the mode of cylinder reset by said structure, so as to solve spring compressed
The problem of size of power changes and influences reseting precision next time in journey, resetted by air pressure instead of stress, make it all the time
Uniform force is kept, while can solve the problem that the problem of spring life is short again, finally improves reseting precision.
Preferably, in order that overall structure is simpler, cylinder resetting means is fixed on scissors support, and the cylinder is answered
Position device includes two or more around scissors pull bar of push rod, push rod cover plate and ring cloth and into symmetrically arranged air cavity,
The push rod described in one is provided with each air cavity, apical grafting is in above-mentioned push rod cover plate after one end stretching air cavity of the push rod
On, the push rod cover plate is fixed between transmission component and scissors pull bar, is provided with the end for the push rod for stretching into air cavity and air cavity
The piston of upper and lower end parts apical grafting, air cavity is divided into two sparkling chambers by the piston, relative to piston on each air cavity
Both sides be equipped with a cushion chamber, and each chamber is connected with a corresponding cushion chamber, and air admission hole is provided with air cavity.
It is stable in order to improve the gas pressure in air cavity, it is connected with air accumulator on the air admission hole of air cavity.
In order to improve sealing effectiveness, more than two sealing rings are provided between piston and the end face of air cavity.
The invention also discloses a kind of repositioning method of the scissors pull bar resetting means of cold headers cutting mechanism, including use
The scissors pull bar resetting means of above-mentioned cold headers cutting mechanism, it comprises the following steps：
Cylinder resetting means is set in the one side of scissors support towards transmission component, and the cylinder resetting means is by cutting
Knife pull bar, which is stretched out around the bar wall of the part of scissors support, is symmetrical arranged more than two air cavitys, is then put in each air cavity
Put one can with scissors pull bar movement locus identical push rod, while push rod stretch out corresponding to after air cavity with being arranged on transmission group
Between part and scissors pull bar and the push rod cover plate apical grafting that can be synchronized with the movement with the motion of scissors pull bar, and it is being placed in air cavity
Internal push rod end set piston so that air cavity is isolated into two chambers by piston, and one is set on each chamber and is delayed
Rush chamber, during work, scissors pull bar will be driven to be moved toward the direction of cutting assemblies by transmission component, and now can simultaneously drive and push away
Bowl cover plate moves toward the direction of cutting assemblies, so as to which push rod cover plate promotes piston to be moved in air cavity, extrudes in the chamber of side
Gas so that the gas can run to in the cushion chamber of corresponding chamber, when needing to reset, due to now transmission group
Part does not work, and the gas in cushion chamber can come back to original chamber originally, and so as to promote piston reset, piston promotes
Push rod cover plate resets, final to drive push rod to reset.
In order to keep stable gas pressure, power is uniform when improving reset effect and resetting, by carrying out pressurize to each air cavity
Operation.
The scissors pull bar resetting means and repositioning method for the cold headers cutting mechanism that the present invention obtains, solve spring and are pressing
The size of power changes and influences reseting precision next time in compression process, and this technology replaces stress to reset with cylinder, makes its beginning
Uniform force is kept eventually, while can solve the problem that the problem of spring life is short again, finally improves reseting precision.
Brief description of the drawings
Fig. 1 is the structural representation of prior art；
Fig. 2 is a kind of structural representation for the scissors pull bar resetting means that embodiment 1 provides cold headers cutting mechanism；
Fig. 3 is a kind of structural representation for the scissors pull bar resetting means that embodiment 2 provides cold headers cutting mechanism.
In figure：Scissors support 1, scissors pull bar 2, transmission component 3, reset assembly 4, spring 4-1, crossbeam 4-2, scissors group
Part 5, air cavity 6, chamber 6-1, push rod 7, push rod cover plate 8, cushion chamber 9, piston 10, air accumulator 11, air admission hole 12, sealing ring 13.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment 1：
As shown in Fig. 2 a kind of scissors pull bar resetting means for cold headers cutting mechanism that the present embodiment provides, including scissors pull bar
2nd, transmission component 3 and reset assembly 4, scissors pull bar 2 run through scissors support 1, and one end of scissors pull bar 2 is located at scissors support 1
Outer end is connected with cutting assemblies 5, and the other end of scissors pull bar 2, which stretches out outside scissors support 1 and fixed with transmission component 3, to be connected
Connect, the reset assembly 4 is between transmission component 3 and scissors pull bar 2, and when transmission component 3 drives scissors pull bar 2 to carry out
After reciprocating motion, after being stopped with transmission component 3, the reset assembly 4 can drive transmission component 3 to be moved toward transmission component 3
When the cylinder resetting means that is resetted of opposite direction.
Existing spring reset has been substituted for the mode of cylinder reset by said structure, so as to solve spring compressed
The problem of size of power changes and influences reseting precision next time in journey, resetted by air pressure instead of stress, make it all the time
Uniform force is kept, while can solve the problem that the problem of spring life is short again, finally improves reseting precision.
As shown in Fig. 2 in the present embodiment in order that overall structure is simpler, cylinder resetting means is fixed on scissors support
On 1, the cylinder resetting means include two or more around scissors pull bar 2 of push rod 7, push rod cover plate 8 and ring cloth and into
Symmetrically arranged air cavity 6, after the interior push rod 7 being provided with described in one of each air cavity 6, one end stretching air cavity 6 of the push rod 7
On above-mentioned push rod cover plate 8, the push rod cover plate 8 is fixed between transmission component 3 and scissors pull bar 2 equal apical grafting, is being stretched into
The end of the push rod 7 of air cavity 6 is provided with the piston 10 with the upper and lower end parts apical grafting of air cavity 6, and air cavity 6 is divided to for two bands by the piston 10
The chamber 6-1 of gas, a cushion chamber 9, and each chamber 6- are equipped with relative to the both sides of piston 10 on each air cavity 6
1 is connected with a corresponding cushion chamber 9, and air admission hole 12 is provided with air cavity 6.
Transmission component 3 described in the present embodiment is cylinder, at the same cutting assemblies 5 described in the present embodiment and
How to drive cutting assemblies 5 to work by scissors pull bar 2 to belong to the routine techniques of cold headers cutting mechanism, do not retouch specifically herein
State.
The present embodiment also discloses a kind of repositioning method of the scissors pull bar resetting means of cold headers cutting mechanism, including adopts
With the scissors pull bar resetting means of above-mentioned cold headers cutting mechanism, it comprises the following steps：
Scissors support 1 towards transmission component 3 one side set cylinder resetting means, and the cylinder resetting means be by
Scissors pull bar 2, which is stretched out around the bar wall of the part of scissors support 1, is symmetrical arranged more than two air cavitys 6, then in each gas
Place in chamber 6 one can with the movement locus identical push rod 7 of scissors pull bar 2, while push rod 7 stretch out corresponding to after air cavity 6 with
It is arranged on the push rod cover plate 8 that can be synchronized with the movement between transmission component 3 and scissors pull bar 2 and with the motion of scissors pull bar 2
Apical grafting, and in the end set piston 10 of push rod 7 being placed in inside air cavity 6 so that air cavity 6 is isolated into two chambers 6- by piston 10
1, and a cushion chamber 9 is set on each chamber 6-1, during work, scissors pull bar 2 will be driven by transmission component 3 toward scissors
The direction motion of component 5, can now drive push rod cover plate 8 to be moved toward the direction of cutting assemblies 5 simultaneously, so as to which push rod cover plate 8 pushes away
Piston 10 moves in air cavity 6, extrudes the gas in the chamber 6-1 of side so that the gas can run into corresponding chamber
In the cushion chamber 9 of 6-1 connections, when needing to reset, because now transmission component 3 does not work, and the gas of cushion chamber 9 is in originally
Cognition comes back to original chamber 6-1, and so as to promote piston 10 to reset, piston 10 promotes push rod cover plate 8 to reset, final to drive
Push rod 7 resets.
As shown in Fig. 2 the air cavity 6 includes two in the present embodiment, and it is respectively arranged on the mutual up and down of scissors pull bar 2
Symmetrical position so that the power that scissors pull bar is subject to about 2 is uniform, the piston 10 in each air cavity 6 by air cavity 6 divide for
Left and right two chambers 6-1, during work, cylinder, which stretches out, promotes scissors pull bar 2 to be moved toward the right so as to promote cutting assemblies 5 to work,
Now push rod cover plate 8 is driven also to be moved toward the right, so as to promote piston 10 to be moved toward the right, the chamber on the now extruding of piston 10 the right
Room 6-1 so that the gas in the chamber 6-1 on the right is extruded in the cushion chamber 9 on the right, when needing to reset, cylinder not work
Make, be not under pressure in the cushion chamber 9 on the right now, allow gas to enough return in the chamber 6-1 on the right, in the effect of gas
Under, promote piston 10 to be moved toward the left side, and the gas on the left side is extruded in the cushion chamber 9 on the left side, while drive push rod cover plate 8
Moved toward the left side, final drive scissors pull bar 2 is realized toward left side movement to be resetted.
Embodiment 2
As shown in figure 3, the present embodiment provide a kind of cold headers cutting mechanism scissors pull bar resetting means general configuration with
Embodiment 1 is identical, unlike, it is stable in order to improve the gas pressure in air cavity, it is connected with storage on the air admission hole 12 of air cavity 6
Gas tank 11, in order to improve sealing effectiveness, more than two sealing rings 13 are provided between the end face of piston 10 and air cavity 6.
In order to keep stable gas pressure, power is uniform when improving reset effect and resetting, by carrying out pressurize to each air cavity 6
Operation, is set by said structure, by setting air accumulator 11, so as to ensure the stable gas pressure in air cavity 6, while passes through sealing
The design of circle 13 improves sealing effectiveness.
Claims (6)
1. a kind of scissors pull bar resetting means of cold headers cutting mechanism, including scissors support（1）, scissors pull bar（2）, transmission
Component（3）And reset assembly（4）, scissors pull bar（2）Through scissors support（1）, scissors pull bar（2）One end be located at scissor machine
Seat（1）Outer end is connected with cutting assemblies（5）, scissors pull bar（2）The other end stretch out scissors support（1）It is outer and with transmission
Component（3）It is fixedly connected, it is characterized in that：The reset assembly（4）It is to be located at transmission component（3）With scissors pull bar（2）Between, and
Work as transmission component（3）Drive scissors pull bar（2）After moving back and forth, with transmission component（3）After being stopped, the reset group
Part（4）Transmission component can be driven（3）Toward transmission component（3）The cylinder resetting means that opposite direction during motion is resetted.
2. the scissors pull bar resetting means of cold headers cutting mechanism according to claim 1, it is characterized in that：Cylinder resets dress
Put and be fixed on scissors support（1）On, the cylinder resetting means includes push rod（7）, push rod cover plate（8）And ring cloth is drawn in scissors
Bar（2）Around two or more and into symmetrically arranged air cavity（6）, in each air cavity（6）Inside it is provided with the push rod described in one
（7）, the push rod（7）One end stretch out air cavity（6）Equal apical grafting is in above-mentioned push rod cover plate afterwards（8）On, the push rod cover plate（8）
It is fixed on transmission component（3）With scissors pull bar（2）Between, stretching into air cavity（6）Push rod（7）End be provided with and air cavity（6）
The piston of upper and lower end parts apical grafting（10）, the piston（10）By air cavity（6）It is divided into two sparkling chambers（6-1）, at each
Air cavity（6）On relative to piston（10）Both sides be equipped with a cushion chamber（9）, and each chamber（6-1）With corresponding one
Individual cushion chamber（9）Connection, in air cavity（6）It is provided with air admission hole（12）.
3. the scissors pull bar resetting means of cold headers cutting mechanism according to claim 2, it is characterized in that：In air cavity（6）
Air admission hole（12）On be connected with air accumulator（11）.
4. the scissors pull bar resetting means of the cold headers cutting mechanism according to Claims 2 or 3, it is characterized in that：In piston
（10）With air cavity（6）End face between be provided with more than one sealing ring（13）.
5. a kind of repositioning method of the scissors pull bar resetting means of cold headers cutting mechanism, including use the claims 2 or 3
The scissors pull bar resetting means of cold headers cutting mechanism described in middle any one claim, it is characterized in that, including following step
Suddenly：
In scissors support（1）Towards transmission component（3）One side cylinder resetting means is set, and the cylinder resetting means is logical
Cross in scissors pull bar（2）Stretch out scissors support（1）Part bar wall around be symmetrical arranged more than two air cavitys（6）, then
In each air cavity（6）Interior placement one can be with scissors pull bar（2）Movement locus identical push rod（7）, while push rod（7）Stretch
Go out corresponding air cavity（6）Afterwards with being arranged on transmission component（3）With scissors pull bar（2）Between and can be with scissors pull bar（2）'s
The push rod cover plate for moving and being synchronized with the movement（8）Apical grafting, and it is being placed in air cavity（6）Internal push rod（7）End set piston（10）,
So that piston（10）By air cavity（6）It is isolated into two chambers（6-1）, and each chamber（6-1）One cushion chamber of upper setting
（9）, during work, transmission component will be passed through（3）Drive scissors pull bar（2）Toward cutting assemblies（5）Direction motion, now can be same
When drive push rod cover plate（8）Toward cutting assemblies（5）Direction motion, so as to push rod cover plate（8）Promote piston（10）In air cavity（6）
Interior movement, extrude the chamber of side（6-1）Interior gas so that the gas can run into corresponding chamber（6-1）Connection is delayed
Rush chamber（9）It is interior, when needing to reset, due to now transmission component（3）Do not work, and be in cushion chamber originally（9）Gas meeting
Come back to original chamber（6-1）, so as to promote piston（10）Reset, piston（10）Promote push rod cover plate（8）Reset, finally
Drive push rod（7）Reset.
6. a kind of repositioning method of the scissors pull bar resetting means of cold headers cutting mechanism according to claim 5, it is special
Sign is：By giving each air cavity（6）Carry out pressurize operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710623445.9A CN107520371A (en) | 2017-07-27 | 2017-07-27 | The scissors pull bar resetting means and repositioning method of cold headers cutting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710623445.9A CN107520371A (en) | 2017-07-27 | 2017-07-27 | The scissors pull bar resetting means and repositioning method of cold headers cutting mechanism |
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| Publication Number | Publication Date |
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| CN107520371A true CN107520371A (en) | 2017-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710623445.9A Pending CN107520371A (en) | 2017-07-27 | 2017-07-27 | The scissors pull bar resetting means and repositioning method of cold headers cutting mechanism |
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| CN (1) | CN107520371A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940115A (en) * | 2019-03-15 | 2019-06-28 | 厦门金波贵金属制品有限公司 | One kind is with trough roller wheel construction |
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|---|---|---|---|---|
| US4866970A (en) * | 1985-04-24 | 1989-09-19 | Albino Castiglioni | Apparatus for the continuous shearing off and cold swaging of metal workpieces |
| CN201632582U (en) * | 2010-04-30 | 2010-11-17 | 浙江东瑞机械工业有限公司 | Clamp switching mechanism of cold header |
| CN201988674U (en) * | 2011-01-18 | 2011-09-28 | 浙江东瑞机械工业有限公司 | Resetting device for scissor-like rod of cold-heading molding machine |
| CN202251604U (en) * | 2011-07-25 | 2012-05-30 | 杭州国电机械设计研究院有限公司 | Controllable air energy storage type buffer |
| CN202606769U (en) * | 2012-06-26 | 2012-12-19 | 浙江东瑞机械工业有限公司 | Back through rocker arm reset device of cold header |
| CN204194683U (en) * | 2014-11-07 | 2015-03-11 | 浙江盛拓机械有限公司 | A kind of multistage cold former cutting system |
| TW201638490A (en) * | 2015-04-30 | 2016-11-01 | Liu Li Qun | Buffering and energy-accumulation device |
| CN206912132U (en) * | 2017-07-27 | 2018-01-23 | 宁波思进机械股份有限公司 | The scissors pull bar resetting means of cold headers cutting mechanism |
-
2017
- 2017-07-27 CN CN201710623445.9A patent/CN107520371A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866970A (en) * | 1985-04-24 | 1989-09-19 | Albino Castiglioni | Apparatus for the continuous shearing off and cold swaging of metal workpieces |
| CN201632582U (en) * | 2010-04-30 | 2010-11-17 | 浙江东瑞机械工业有限公司 | Clamp switching mechanism of cold header |
| CN201988674U (en) * | 2011-01-18 | 2011-09-28 | 浙江东瑞机械工业有限公司 | Resetting device for scissor-like rod of cold-heading molding machine |
| CN202251604U (en) * | 2011-07-25 | 2012-05-30 | 杭州国电机械设计研究院有限公司 | Controllable air energy storage type buffer |
| CN202606769U (en) * | 2012-06-26 | 2012-12-19 | 浙江东瑞机械工业有限公司 | Back through rocker arm reset device of cold header |
| CN204194683U (en) * | 2014-11-07 | 2015-03-11 | 浙江盛拓机械有限公司 | A kind of multistage cold former cutting system |
| TW201638490A (en) * | 2015-04-30 | 2016-11-01 | Liu Li Qun | Buffering and energy-accumulation device |
| CN206912132U (en) * | 2017-07-27 | 2018-01-23 | 宁波思进机械股份有限公司 | The scissors pull bar resetting means of cold headers cutting mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940115A (en) * | 2019-03-15 | 2019-06-28 | 厦门金波贵金属制品有限公司 | One kind is with trough roller wheel construction |
| CN109940115B (en) * | 2019-03-15 | 2024-03-08 | 厦门金波贵金属制品有限公司 | Groove following roller structure |
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