CN104647789A - Transmission structure of multi-connecting-rod mechanical press - Google Patents
Transmission structure of multi-connecting-rod mechanical press Download PDFInfo
- Publication number
- CN104647789A CN104647789A CN201510087705.6A CN201510087705A CN104647789A CN 104647789 A CN104647789 A CN 104647789A CN 201510087705 A CN201510087705 A CN 201510087705A CN 104647789 A CN104647789 A CN 104647789A
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- China
- Prior art keywords
- connecting rod
- hinged
- rod
- bearing pin
- slide block
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
- B30B1/266—Drive systems for the cam, eccentric or crank axis
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a transmission structure of a multi-connecting-rod mechanical press, which belongs to the field of presses. The transmission structure comprises an eccentric gear, an upper pull rod, an angular rocking rod, a lower pull rod, a crank connecting rod and a sliding block connecting rod, wherein one end of the upper pull rod and one end of the crank connecting rod are jointly hinged to the eccentric gear, the middle part of the angular rocking rod is hinged to a rack through a positioning shaft, the other end of the upper pull rod is hinged to the upper end of the angular rocking rod together through a first pin shaft, one end of the lower pull rod is hinged to the lower end of the angular rocking rod together through a second pin shaft, the other end of the lower pull rod, the other end of the crank connecting rod and the upper end of the sliding block connecting rod are hinged together through third pin shafts, the lower end of the sliding block connecting rod is hinged to a sliding block together, and the sliding block is arranged in a sliding sleeve. According to the transmission structure, all of the rods are reasonably matched in length and positions, so that the production efficiency is greatly improved, the service life of a mold is prolonged, and the transmission structure can be used in occasions with deep drawing heights.
Description
Technical field
The present invention relates to a kind of forcing press, particularly a kind of forcing press transmission mechanism.
Background technology
The curve movement of conventional crank press is typical sine curve, slide block velocity variations above bottom dead centre is very fast, be unfavorable for the drawing and moulding of material, generally can only complete the shallow stretching of about 100mm, as for deep stretching process, be easy to the situation occurring material drawing crack, be therefore used for the simple process such as stamping-out, flange, shallow stretching.The hydraulic press travel speed doing deep stretching process is in the market low, and pressure stroke is large, but due to its whole motion process medium velocity be constant, so time waste is more, efficiency is on the low side, and its efficiency also constrains line forcing press efficiency, can not meet the requirement of modern punching production rhythm.The multi-bar mechanical press that six-bar linkage drives has the similar characteristic of the multi-bar mechanical press that drives with eight connecting rods, but quickreturn characteristics and the height that stretches will lower than the crank presses of eight connecting rods drivings.
A kind of six-bar linkage forcing press is disclosed in prior art, its publication number is: CN1616221, comprise eccentric gear, upper connecting rod, rocking bar, crank connecting rod and slide block connecting rod, one end of described upper connecting rod and one end of crank connecting rod are hinged on eccentric gear jointly, rocking bar is hinged in frame through locating shaft, the other end of upper connecting rod through the first bearing pin and rocking bar hinged, the other end of crank connecting rod, upper end the 3rd hinge of slide block connecting rod together, lower end and the slide block of slide block connecting rod are hinged, described slide block is arranged in sliding sleeve.Its weak point is, its stretching is highly general at 300mm, and the number of strokes is at 16 ~ 18 times/about min per minute, and its efficiency is lower, and work noise is larger.
Summary of the invention
The object of this invention is to provide a kind of multi-bar mechanical press drive mechanism, improve forcing press production efficiency, extend die life, reduce work noise.
The object of the present invention is achieved like this: a kind of multi-bar mechanical press drive mechanism, comprise eccentric gear, upper connecting rod, angle rocking bar, lower link, crank connecting rod and slide block connecting rod, one end of described upper connecting rod and one end of crank connecting rod are hinged on eccentric gear jointly, be hinged in frame through locating shaft in the middle part of the rocking bar of angle, the other end of upper connecting rod through the first bearing pin together with the upper end thereof of angle rocking bar, one end second bearing pin of lower link and the lower end of angle rocking bar hinged, the other end of lower link, the other end of crank connecting rod and upper end the 3rd hinge of slide block connecting rod are together, lower end and the slide block of slide block connecting rod are hinged, described slide block is arranged in sliding sleeve.
Compared with prior art, beneficial effect of the present invention is, there is when non-active area the descending and opening speed that crank press does not reach, and have hydraulic press movement velocity when working region soft and can export more stable, the feature of larger tensile force, there is the stretching height higher than the multi-link lever press of six-bar linkage driving simultaneously, backhaul faster and downstream rate, the multi-bar mechanical press that the present invention eight connecting rod drives stretches highly can reach 450mm, the number of strokes brings up to 20 ~ 24 times/min, ram travel is more than or equal to 1 meter, slide block no-load speed is maximum reaches 1400mm/s, hydraulic press can be replaced and six-bar linkage punching machine completes deep stretching process by the present invention, and greatly enhance productivity, extend die life, reduce work noise.The present invention can be used for deep drawn height occasion.
In order to ensure that lower link and angle rocking bar can offset maximum operating pressure, the angle between the center of circle line between described locating shaft and the first bearing pin, the second bearing pin is 105 °-120 °.
In order to avoid bearing pin generation axially-movable during work and rotation, described first bearing pin, the second bearing pin, the 3rd bearing pin are all provided with positive stop key.
In order to ensure the stability that forcing press runs further, described slide block is provided with the spacing collar coordinated with described sliding sleeve.
Accompanying drawing explanation
Fig. 1 is the leverage schematic diagram of patent of the present invention.
Fig. 2 is the structural representation of patent of the present invention.
Fig. 3 is stroke capability curve map when the present invention being used for multi-link lever press.
Fig. 4 is for be used for multi-link lever press hourly velocity acceleration plots by the present invention.
Wherein, 1 locating shaft, 2 jiaos of rocking bars, 3 first bearing pins, 4 upper connecting rods, 5 eccentric gears, 6 second bearing pins, 7 lower links, 8 the 3rd bearing pins, 9 positive stop keys, 10 spacing collars, 11 sliding sleeves, 12 slide blocks, 13 slide block connecting rods, 14 crank connecting rods.
Detailed description of the invention
A kind of multi-bar mechanical press drive mechanism as shown in Figure 1-2, comprise eccentric gear 5, upper connecting rod 4, angle rocking bar 2, lower link 7, crank connecting rod 14 and slide block connecting rod 13, one end of upper connecting rod 4 and one end of crank connecting rod 14 are hinged on eccentric gear 5 jointly, be hinged in frame through locating shaft 1 in the middle part of angle rocking bar 2, the other end of upper connecting rod 4 through the first bearing pin 3 together with the upper end thereof of angle rocking bar 2, one end second bearing pin 6 of lower link 7 is hinged with the lower end of angle rocking bar 2, the other end of lower link 7, the other end of crank connecting rod 14 and upper end the 3rd bearing pin 8 of slide block connecting rod 13 hinged, lower end and the slide block 12 of slide block connecting rod 13 are hinged, slide block 12 is arranged in sliding sleeve 11, locating shaft 1 and the first bearing pin 3, angle β between the center of circle line between the second bearing pin 6 is 105 °-120 °, first bearing pin 3, second bearing pin 6, 3rd bearing pin 8 is all provided with positive stop key 9, slide block 12 is provided with the spacing collar 10 coordinated with sliding sleeve 11.
Compared to six bar mechanism, lower link 7 of the present invention matches with leverage each in leverage when forcing press stretches, jointly bear operating pressure, make leverage stressing conditions better, the side force that part leverage produces in running can be offset, because the stabilization leverage of lower link 7 can not produce large inertia force in high-speed cruising, forcing press work is more steady, angle rocking bar 2 drives lower link 7 to swing, and the setting of angle rocking bar 2 angle ensures that lower link 7 and upper connecting rod 4 can offset maximum operating pressure under the prerequisite of not colliding.
Drive mechanism in the present invention is applied in existing forcing press, and it is detected, the data obtained as shown in Figure 3-4, as shown in Figure 3, slide block 12 is more stronger close to its ability of bottom dead centre (ton), when distance bottom dead centre 500-50mm, curve is comparatively level and smooth, curvature is lower, now fan-out capability (ton) is more steady, as distance bottom dead centre 50-13mm, curvature of curve raises rapidly, illustrate that now ability (ton) strengthens rapidly, carry out punching press action, during distance bottom dead centre 13-0mm, its ability remains unchanged and finally completes punching press, therefore invention increases the good stretching height of forcing press, there is Fig. 4 known, the corner of master gear is backhaul state at 180 °-315 °, speed is maximum, 0 °-180 °, 315 °-360 ° is descending process, speed is slow relative to backhaul, its efficiency of the lower explanation of ratio delta of backhaul and descending process is higher, and when the present invention applies, δ can reach 0.6, improves the number of times of press ram 12 stroke.To sum up can obtain, the present invention, by increasing an arm-tie and a rocking arm between locating shaft 1 and the 3rd bearing pin 8, improves stretching height and the production efficiency of forcing press.
The present invention is not limited to above-described embodiment; 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 to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection scope of the present invention.
Claims (4)
1. a multi-bar mechanical press drive mechanism, it is characterized in that, comprise eccentric gear, upper connecting rod, angle rocking bar, lower link, crank connecting rod and slide block connecting rod, one end of described upper connecting rod and one end of crank connecting rod are hinged on eccentric gear jointly, be hinged in frame through locating shaft in the middle part of the rocking bar of angle, the other end of upper connecting rod through the first bearing pin together with the upper end thereof of angle rocking bar, one end second bearing pin of lower link and the lower end of angle rocking bar hinged, the other end of lower link, the other end of crank connecting rod and upper end the 3rd hinge of slide block connecting rod are together, lower end and the slide block of slide block connecting rod are hinged, described slide block is arranged in sliding sleeve.
2. a kind of multi-bar mechanical press drive mechanism according to claim 1, is characterized in that, the angle between the center of circle line between described locating shaft and the first bearing pin, the second bearing pin is 105 °-120 °.
3. a kind of multi-bar mechanical press drive mechanism according to claim 1 and 2, is characterized in that, described first bearing pin, the second bearing pin, the 3rd bearing pin are all provided with positive stop key.
4. a kind of multi-bar mechanical press drive mechanism according to claim 1 and 2, is characterized in that, described slide block is provided with the spacing collar coordinated with described sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087705.6A CN104647789A (en) | 2015-02-26 | 2015-02-26 | Transmission structure of multi-connecting-rod mechanical press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087705.6A CN104647789A (en) | 2015-02-26 | 2015-02-26 | Transmission structure of multi-connecting-rod mechanical press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104647789A true CN104647789A (en) | 2015-05-27 |
Family
ID=53239650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510087705.6A Pending CN104647789A (en) | 2015-02-26 | 2015-02-26 | Transmission structure of multi-connecting-rod mechanical press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104647789A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959711A (en) * | 2021-02-04 | 2021-06-15 | 一重集团大连工程技术有限公司 | Eight-connecting-rod press transmission mechanism |
| CN113524756A (en) * | 2021-09-15 | 2021-10-22 | 广东益鼎机器人有限公司 | Closed type large-tonnage four-point servo toggle rod stamping device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3785282A (en) * | 1970-06-10 | 1974-01-15 | Zdarske Strojirny A Slevarny | Mechanical press with toggle lever crank drive |
| GB1433112A (en) * | 1974-06-10 | 1976-04-22 | Us Industries Inc | Driving linkages for reciprocating the slides of mechanical presses |
| US4138904A (en) * | 1977-07-20 | 1979-02-13 | Verson Allsteel Press Company | Link drive mechanism for mechanical presses |
| DE4308475A1 (en) * | 1993-03-17 | 1994-09-22 | Pressen Engineering Essen Gmbh | Drive for the plunger of a cutting press or metal-forming machine tool |
| GB2299962A (en) * | 1995-04-21 | 1996-10-23 | Rhodes Joseph Ltd | Press for working material |
| CN101474878A (en) * | 2009-02-08 | 2009-07-08 | 山东高密高锻机械有限公司 | Driver of press |
-
2015
- 2015-02-26 CN CN201510087705.6A patent/CN104647789A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3785282A (en) * | 1970-06-10 | 1974-01-15 | Zdarske Strojirny A Slevarny | Mechanical press with toggle lever crank drive |
| GB1433112A (en) * | 1974-06-10 | 1976-04-22 | Us Industries Inc | Driving linkages for reciprocating the slides of mechanical presses |
| US4138904A (en) * | 1977-07-20 | 1979-02-13 | Verson Allsteel Press Company | Link drive mechanism for mechanical presses |
| DE4308475A1 (en) * | 1993-03-17 | 1994-09-22 | Pressen Engineering Essen Gmbh | Drive for the plunger of a cutting press or metal-forming machine tool |
| GB2299962A (en) * | 1995-04-21 | 1996-10-23 | Rhodes Joseph Ltd | Press for working material |
| CN101474878A (en) * | 2009-02-08 | 2009-07-08 | 山东高密高锻机械有限公司 | Driver of press |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959711A (en) * | 2021-02-04 | 2021-06-15 | 一重集团大连工程技术有限公司 | Eight-connecting-rod press transmission mechanism |
| CN112959711B (en) * | 2021-02-04 | 2023-02-17 | 一重集团大连工程技术有限公司 | Eight-connecting-rod press transmission mechanism |
| CN113524756A (en) * | 2021-09-15 | 2021-10-22 | 广东益鼎机器人有限公司 | Closed type large-tonnage four-point servo toggle rod stamping device |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Yang Road, Yangzhou hi tech Industrial Development Zone, Hanjiang District, Jiangsu city of Yangzhou Province, No. 99 225009 Applicant after: JIANGSU YANGLI GROUP CO., LTD. Address before: 225000 Jiangsu Province, Yangzhou City Hanjiang Industrial Park Yang Road No. 99 Applicant before: Jiangsu Yangli Group Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |
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| RJ01 | Rejection of invention patent application after publication |