CN102431203A - Synchronous regulation structure for stroke of pressing machine - Google Patents
Synchronous regulation structure for stroke of pressing machine Download PDFInfo
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- CN102431203A CN102431203A CN201110441406XA CN201110441406A CN102431203A CN 102431203 A CN102431203 A CN 102431203A CN 201110441406X A CN201110441406X A CN 201110441406XA CN 201110441406 A CN201110441406 A CN 201110441406A CN 102431203 A CN102431203 A CN 102431203A
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- connecting rod
- eccentric bushing
- eccentric
- stroke
- lock sleeve
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Abstract
The invention relates to a synchronous regulation structure for a stroke of a pressing machine in the technical field of pressing machines. The synchronous regulation structure comprises a group of crank shafts, two groups of connecting rods and two groups of eccentric distance adjusting devices, wherein the two groups of connecting rods are respectively connected with synchronous driving slide block mechanisms through the two groups of eccentric distance adjusting devices and the crank shafts; each eccentric distance adjusting device comprises an eccentric sleeve, a lock sleeve, a pneumatic device, a spring and a connecting rod cap, wherein the eccentric sleeve is sleeved at the periphery of the connecting rod neck journal of the crank shaft and can rotate and slip along the axial direction of the connecting rod neck journal; two end surfaces of the eccentric sleeve are respectively provided with lateral teeth; lateral teeth matched with the end surfaces of the eccentric sleeve are respectively arranged on the end surfaces, corresponding to the eccentric sleeve, of the lock sleeve and connecting rod cap arranged at two ends of the eccentric sleeve; and the pneumatic device and the spring can drive the eccentric sleeve to respectively be meshed with the lateral teeth of the lock sleeve and the connecting rod cap so as to realize normal punching motion and stroke regulation of the slide blocks. According to the synchronous regulation structure provided by the invention, the connecting rods and the eccentric distance adjusting devices are driven to carry out synchronous action through the rotation of the crank shafts, thus the synchronous and accurate regulation of the stroke of the slide blocks of the connecting rods is realized, and the regulation precision is high.
Description
Technical field
The present invention relates to the press technologies field, particularly a kind of two point or four point pressure machine stroke adjusted in concert structures.
Background technology
Whether the punching machine of home and abroad use at present is variable according to path increment; Be divided into fixed forcing press of stroke and stroke adjustable pressure machine; And stroke adjustable pressure machine mainly is that single-point crank throw forcing press is many at present, and two point and 4 stroke adjustable pressing machines are because of its degree of regulation is difficult to synchronously, the accurate scope of application that has limited forcing press.
Stroke adjustable pressing machine adjustment structure of the prior art, the inner eccentric bushing of general employing rotation connecting rod changes eccentric bushing and adjusts different eccentric throws with the relative rotation of eccentric shaft, regulates with the method realization path increment.And the action of two point and four point pressure machine running parts need guarantee its synchronism; For this reason in two point or 4 stroke adjustable pressing machine structures; If change offset through the rotating eccentricity cover; Then needing a plurality of eccentric bushings to rotate synchronously, generally is that a regulating shaft is set below driving crank in addition, the two ends gear respectively with two gears engaged of regulating eccentric bushing; Regulating shaft when needs are regulated below the rotation is realized the adjusted in concert eccentric bushing, after having transferred regulating shaft is pushed aside engagement and is removed regulating shaft.This structure only is applicable to single shaft two point structure, and complex structure, and regulating step is loaded down with trivial details, and regulating error is big, can not well guarantee degree of regulation.Other similar eccentric bushing adjustment structures exist the synchronism of adjusting and the problem of low precision equally.
Summary of the invention
The present invention is directed to the problem that prior art exists, a kind of stroke of a press adjusted in concert structure be provided, two groups of linkage strokes that are intended to make two-point press synchronously, accurately adjustable, simple in structure, degree of regulation is high.
The objective of the invention is to realize like this; A kind of stroke of a press adjusted in concert structure; Comprise bent axle, connecting rod and eccentric throw adjusting device, said connecting rod is two groups and is connected the driven in synchronism slide block mechanism with bent axle through two groups of eccentric throw adjusting devices respectively that said eccentric throw adjusting device comprises eccentric bushing, lock sleeve, pneumatic means, spring and connecting rod end cap; Said eccentric bushing be sleeved on bent axle the rod journal periphery and can be along rod journal axial rotation and slip; Said connecting rod and eccentric bushing outer planet are dynamically connected, and said lock sleeve and connecting rod end cap are separately positioned on the eccentric bushing two ends, and lock sleeve is fixedly connected with the trunnion of bent axle; Said connecting rod end cap is fixedly connected with connecting rod; Said spring is arranged between eccentric bushing and the connecting rod end cap, and pneumatic means is arranged between eccentric bushing and the lock sleeve, and said eccentric bushing both ends of the surface are respectively equipped with the side tooth; Lock sleeve and the connecting rod end cap end face corresponding with eccentric bushing are respectively equipped with the side tooth suitable with the eccentric bushing end face, and said pneumatic means and spring can make eccentric bushing realize the normal ramming motion and the stroke adjustment of slide block respectively with the side tooth engagement of lock sleeve and connecting rod end cap.
In this structure; Two groups of connecting rods are realized ramming motion and stroke adjustment motion through the action driven in synchronism slide block mechanism of a bent axle; Two groups of connecting rods adopt the connected modes identical with bent axle, and in the processing, connecting rod, bent axle, each parts of eccentric throw adjusting device can match processing; Guarantee that each component processing required precision is consistent, guaranteed the uniformity of ram travel.In the work; When press ram carries out normal ramming motion; Eccentric bushing under the effect of spring force with engagement of the side tooth of lock sleeve and locking, bent axle rotates and drives eccentric bushing through lock sleeve and rotate synchronously, connecting rod is around the eccentric bushing swing and drive slide block mechanism and realize ramming motion up and down.When needs were regulated the stroke of press ram, the pneumatic means air inlet promoted eccentric bushing and moves and separate with lock sleeve side tooth and mesh with connecting rod end cap side tooth.Engagement through end cap and eccentric bushing side tooth has limited relatively rotating of connecting rod and eccentric bushing.And separating of eccentric bushing and lock sleeve side tooth makes eccentric bushing to rotate around bent axle.Bent axle rotates, and connecting rod drives eccentric bushing and rotates around bent axle, and the angle of eccentric bushing and bent axle changes, and ram travel changes thereupon, up to obtaining the equivalent crank length of expection, reaches predetermined stroke.Stroke adjustment finishes, the pneumatic means venting, and eccentric bushing separates with connecting rod end cap side tooth under the effect of spring force, and meshes with lock sleeve side tooth, and bent axle rotates the drive connecting rod swing and carries out normal ramming motion.In the stroke adjustment process, each is organized pneumatic means and realizes air inlet simultaneously and exhaust through a control device, has guaranteed the uniformity and the accuracy of two groups of connecting rod slider mechanism stroke adjustment.Forcing press carries out in above-mentioned the ram travel adjusting and press work, all is to realize through rotation drive bar company and each parts synchronization action of eccentric throw adjusting device of bent axle, has avoided the defective of the sum of errors poor synchronization of artificial manual adjustments.So the beneficial effect of apparatus of the present invention is: can make the ram travel of two-point press realize accurately regulating synchronously; And it is simple in structure; Degree of regulation is high, and stroke adjustment is convenient and reliable, high conformity; Can enlarge the processing technology scope of single shaft two-point press, have good economic and practical.
As improvement of the present invention; Said bent axle is two groups; And every suite axle is connected with bent axle through two groups of eccentric throw adjusting devices respectively, and said two suite axles drive synchronously through intermeshing gear wheel and rotate the connecting rod driven in synchronism slide block mechanism on the said two suite axles.Two suite axles are through the gear motion of gear wheel; Rotate and drive each parts synchronization action of eccentric throw adjusting device with complete synchronous mode and realize accurately regulating synchronously of ram travel, be suitable for the stroke of a press adjustment structure of 4 big table tops of twin shaft with synchronous mode fully.
As improved procedure of the present invention, said pneumatic means comprises piston, piston ring and pressing plate, and said pressing plate is connected with eccentric bushing, and said piston is arranged in the piston ring and with pressing plate and in piston ring, can slides relatively, and said piston ring is fixedly connected with interlinking lever end.When piston is inflated, promote eccentric bushing through pressing plate and overcome spring force, eccentric bushing and lock sleeve separate and with the side tooth engagement of connecting rod end cap, bent axle rotates, connecting rod drives eccentric bushing rotation realization stroke adjustment.
As a kind of optimal way of the present invention, said pressing plate is connected through bolt with eccentric bushing.
As another kind of optimal way of the present invention, said lock sleeve is that key is connected with the connected mode of main bearing journal.
Description of drawings
Fig. 1 is the structure chart of embodiments of the invention 1.
Fig. 2 is the structure chart of example 2 of the present invention.
Wherein, 1 piston ring; 2 pistons; 3 pressing plates; 4 connecting rods; 5 eccentric bushings; 6 springs; 7 connecting rod end caps; 8 fuselages support; 9 lock sleeves; 10 bent axles; 11 gear wheels.
The specific embodiment
Embodiment 1
Be illustrated in figure 1 as the structure chart of stroke of a press adjusted in concert structure embodiment 1 of the present invention; Comprise bent axle 10, connecting rod 4 and eccentric throw adjusting device; Bent axle 10 is one group; Be supported on fuselage and support on 8, connecting rod 4 is two groups and is connected the driven in synchronism slide block mechanism through two groups of eccentric throw adjusting devices with bent axle 10 respectively that the eccentric throw adjusting device comprises eccentric bushing 5, lock sleeve 9, pneumatic means, spring 6 and connecting rod end cap 7; Eccentric bushing 5 be sleeved on bent axle 10 the rod journal periphery and can be along rod journal axial rotation and slip; Connecting rod 4 is dynamically connected with eccentric bushing 5 outer planet, and lock sleeve 9 is separately positioned on eccentric bushing 5 two ends with connecting rod end cap 7, and lock sleeve 9 is connected fixing to guarantee that lock sleeve 9 and bent axle 10 rotate synchronously with the trunnion of bent axle 10 through key; Connecting rod end cap 7 is fixedly connected with connecting rod 4; Spring 6 is arranged between eccentric bushing 5 and the connecting rod end cap 7, and pneumatic means is arranged between eccentric bushing 5 and the lock sleeve 9, and eccentric bushing 5 both ends of the surface are respectively equipped with the side tooth; Lock sleeve 9 is respectively equipped with and the suitable side tooth of eccentric bushing 5 end faces with eccentric bushing 5 corresponding end faces with connecting rod end cap 7, and pneumatic means and spring 6 can make eccentric bushing 5 realize the normal ramming motion and the stroke adjustment of slide block respectively with the side tooth engagement of lock sleeve 9 and connecting rod end cap 7.Pneumatic means among the present invention comprises piston 2, piston ring 1 and pressing plate 3, and pressing plate 3 and eccentric bushing 5 are connected through bolt, and piston 2 is arranged in the piston ring 1 and with pressing plate 3 and in piston ring 1, can slides relatively, and piston ring 1 is fixedly connected with connecting rod 4 ends.
In this device; Two groups of connecting rods 4 are connected with bent axle 10 through two groups of identical attaching parts on bent axle 10; In the processing; Each attaching parts such as connection end cap 7, eccentric bushing 5, pneumatic means and spring 6 can be matched and processed and assembling, guarantee the uniformity and the synchronism of the adjusting and the motion of two groups of linkages.In the work, piston is in deflated state, and the elastic force effect of spring 6 promotes the side tooth engagement of eccentric bushing 5 and lock sleeve 9, and bent axle 10 rotates, and realizes the normal ramming motion of press ram; When the needs adjustment stroke, piston is in the charging stage, and piston 2 promotes the elastic force that eccentric bushing 5 overcomes spring 6 through pressing plate 3; Eccentric bushing 5 move opened in 9 minutes with lock sleeve and with the side tooth engagement of connecting rod end cap 7, eccentric bushing 5 is by 7 lockings of connecting rod end cap, bent axle 10 rotates; The rotational angle that connecting rod 4 drives eccentric bushing 5 relative bent axles 10 changes; The offset sum of the offset of bent axle 10 and eccentric bushing 5 is the half the path increment of slide block, and angle is changed to the intended travel amount, and stroke adjustment finishes; Piston 2 venting; Eccentric bushing 5 returns to the operating position with lock sleeve 9 locking engagements, and bent axle 10 rotates, and lock sleeve 9 drives eccentric bushing 5 rotations and drivening rod 4 swings realize slide block ramming motion up and down.And two groups of pneumatic means among the present invention are controlled the synchronism and the uniformity of air inlet simultaneously and realization slide block movement of exhaust simultaneously and stroke adjustment through a control device.
Embodiment 2
Present embodiment and embodiment 1 difference do; Present embodiment is suitable in 4 big table top stroke of a press adjustment structures of twin shaft; Bent axle 10 is two groups; And every suite axle 10 is connected with bent axle 10 through two groups of eccentric throw adjusting devices respectively, and two suite axles 10 drive synchronous rotation, the connecting rod driven in synchronism slide block mechanism on the two suite axles 10 through intermeshing gear wheel 10.In the work, two suite axles 10 are through the gear motion of gear wheel 11, rotate and drive each parts synchronization action of eccentric throw adjusting device with synchronous mode fully with synchronous mode fully, realize accurately regulating synchronously of ram travel.
Type of the present invention is not limited to the foregoing description; Every on the basis of technical scheme disclosed by the invention; Those skilled in the art is according to disclosed technology contents; Do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in the scope that the invention of this reality is protected.
Claims (5)
1. stroke of a press adjusted in concert structure; Comprise bent axle, connecting rod and eccentric throw adjusting device; It is characterized in that said connecting rod is two groups and is connected the driven in synchronism slide block mechanism with bent axle through two groups of eccentric throw adjusting devices respectively that said eccentric throw adjusting device comprises eccentric bushing, lock sleeve, pneumatic means, spring and connecting rod end cap; Said eccentric bushing be sleeved on bent axle the rod journal periphery and can be along rod journal axial rotation and slip; Said connecting rod and eccentric bushing outer planet are dynamically connected, and said lock sleeve and connecting rod end cap are separately positioned on the eccentric bushing two ends, and lock sleeve is fixedly connected with the trunnion of bent axle; Said connecting rod end cap is fixedly connected with connecting rod; Said spring is arranged between eccentric bushing and the connecting rod end cap, and pneumatic means is arranged between eccentric bushing and the lock sleeve, and said eccentric bushing both ends of the surface are respectively equipped with the side tooth; Said lock sleeve and the connecting rod end cap end face corresponding with eccentric bushing are respectively equipped with the side tooth suitable with the eccentric bushing end face, and said pneumatic means and spring can make eccentric bushing realize the normal ramming motion and the stroke adjustment of slide block respectively with the side tooth engagement of lock sleeve and connecting rod end cap.
2. stroke of a press adjusted in concert structure according to claim 1; It is characterized in that; Said bent axle is two groups; And every suite axle is connected with bent axle through two groups of eccentric throw adjusting devices respectively, and said two suite axles drive synchronously through intermeshing gear wheel and rotate the connecting rod driven in synchronism slide block mechanism on the said two suite axles.
3. stroke of a press adjusted in concert structure according to claim 1 and 2; It is characterized in that; Said pneumatic means comprises piston, piston ring and pressing plate; Said pressing plate is connected with eccentric bushing, and said piston is arranged in the piston ring and with pressing plate and in piston ring, can slides relatively, and said piston ring is fixedly connected with interlinking lever end.
4. stroke of a press adjusted in concert structure according to claim 3 is characterized in that said pressing plate is connected through bolt with eccentric bushing.
5. according to each described stroke of a press adjusted in concert structure of claim 3, it is characterized in that said lock sleeve is that key is connected with the connected mode of main bearing journal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441406.XA CN102431203B (en) | 2011-12-26 | 2011-12-26 | Synchronous regulation structure for stroke of pressing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441406.XA CN102431203B (en) | 2011-12-26 | 2011-12-26 | Synchronous regulation structure for stroke of pressing machine |
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| Publication Number | Publication Date |
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| CN102431203A true CN102431203A (en) | 2012-05-02 |
| CN102431203B CN102431203B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110441406.XA Active CN102431203B (en) | 2011-12-26 | 2011-12-26 | Synchronous regulation structure for stroke of pressing machine |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5109766A (en) * | 1990-10-31 | 1992-05-05 | The Minster Machine Company | Adjustable stroke punch press |
| US5257554A (en) * | 1991-03-26 | 1993-11-02 | Aida Engineering, Ltd. | Device for adjusting eccentric value of the eccentric portion of crank shaft in press machine |
| DE19810425A1 (en) * | 1998-03-11 | 1999-09-16 | Schuler Pressen Gmbh & Co | Eccentric press with adjustable stroke |
| CN201147997Y (en) * | 2008-01-07 | 2008-11-12 | 扬州锻压机床集团有限公司 | Stroke control apparatus of crankshaft connecting rod press machine |
| CN201423771Y (en) * | 2009-06-23 | 2010-03-17 | 扬州锻压机床集团有限公司 | Press stroke adjusting device |
| CN202448370U (en) * | 2011-12-26 | 2012-09-26 | 江苏扬力集团有限公司 | Synchronization adjustment structure for stroke of press |
-
2011
- 2011-12-26 CN CN201110441406.XA patent/CN102431203B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5109766A (en) * | 1990-10-31 | 1992-05-05 | The Minster Machine Company | Adjustable stroke punch press |
| US5109766B1 (en) * | 1990-10-31 | 1994-03-22 | Minster Machine Co | Adjustable stroke punch press |
| US5257554A (en) * | 1991-03-26 | 1993-11-02 | Aida Engineering, Ltd. | Device for adjusting eccentric value of the eccentric portion of crank shaft in press machine |
| DE19810425A1 (en) * | 1998-03-11 | 1999-09-16 | Schuler Pressen Gmbh & Co | Eccentric press with adjustable stroke |
| CN201147997Y (en) * | 2008-01-07 | 2008-11-12 | 扬州锻压机床集团有限公司 | Stroke control apparatus of crankshaft connecting rod press machine |
| CN201423771Y (en) * | 2009-06-23 | 2010-03-17 | 扬州锻压机床集团有限公司 | Press stroke adjusting device |
| CN202448370U (en) * | 2011-12-26 | 2012-09-26 | 江苏扬力集团有限公司 | Synchronization adjustment structure for stroke of press |
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| Publication number | Publication date |
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| CN102431203B (en) | 2014-07-16 |
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Address after: Yang Road, Yangzhou hi tech Industrial Development Zone, Hanjiang District, Jiangsu city of Yangzhou Province, No. 99 225009 Patentee after: JIANGSU YANGLI GROUP CO., LTD. Address before: 225127 Jiangsu Province, Yangzhou City Hanjiang Industrial Park Yang Road No. 99 Patentee before: Jiangsu Yangli Group Co., Ltd. |
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