CN201687906U - Toggle rod pressure transmission mechanism and pressure machine or injection molding machine comprising same - Google Patents

Toggle rod pressure transmission mechanism and pressure machine or injection molding machine comprising same Download PDF

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Publication number
CN201687906U
CN201687906U CN2010201193954U CN201020119395U CN201687906U CN 201687906 U CN201687906 U CN 201687906U CN 2010201193954 U CN2010201193954 U CN 2010201193954U CN 201020119395 U CN201020119395 U CN 201020119395U CN 201687906 U CN201687906 U CN 201687906U
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CN
China
Prior art keywords
hinge
transmission mechanism
toggle
pressure transmission
elbow
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Expired - Lifetime
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CN2010201193954U
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Chinese (zh)
Inventor
莫健华
张宜生
吕言
张正斌
杨昊玥
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Priority to CN2010201193954U priority Critical patent/CN201687906U/en
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Publication of CN201687906U publication Critical patent/CN201687906U/en
Anticipated expiration legal-status Critical
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Abstract

A toggle rod pressure transmission mechanism belongs to the field of connecting rod transmission mechanisms, and comprises a toggle rod mechanism, a driving block and a slide block, wherein, the toggle rod mechanism comprises an upper toggle plate, a lower toggle rod and a middle connecting rod, the upper toggle plate is respectively connected with the lower toggle rod, the middle connecting rod and a frame through a toggle rod hinge, a connecting hinge and an upper cross beam hinge, the other end of the lower toggle rod is connected with the slide block through a slide block hinge, and the other end of the middle connecting rod is connected with the driving block through a driving hinge. In each toggle rod mechanism, a line segment connecting the axes of the driving hinge and the axes of the connecting hinge and a straight line passing through the axes of the upper cross beam hinge and the axes of the toggle rod hinge are positioned in the same plane and keep disjointed during the entire operation of the mechanism. Compared with the traditional symmetric six-link mechanism, the utility model has the advantages of good force amplifying performance and lower overall height. The load-bearing shaft of the transmission mechanism is subject to relatively uncomplicated stress and is less vulnerable to fracture. The utility model further relates to a pressure machine or an injection molding machine comprising the toggle rod pressure transmission mechanism.

Description

A kind of toggle lever pressure transmission mechanism and comprise the press machine or the injection machine of this mechanism
Technical field
The utility model belongs to jointed gear unit, is specifically related to a kind of pressure drive mechanism and comprises the press machine or the injection machine of this mechanism.
Background technique
The symmetry six link presses product of (net wild (Wuhan) High Seience Technology Co., Ltd.) are the equipment of popular recently plastic working.It is with respect to other traditional pressure mechanism, for example crank-connecting rod transmission type press machine is (referring to "<crank press ", He Deyu, China Machine Press, 1987), crank toggle link transmission type press machine is (referring to " optimal design of mechanical press toggle link driving mechanism ", Zhang Yuantong, Zhu Denglin, " machinery and electronics ", 2008 (1), 10~12 pages), hydraulic driven press machine (referring to " design of hydraulic press and application ", Yu Xinlu, China Machine Press) and power screw formula press machine (referring to the J58K series numerical control electric screw press of Wuhan Xinweiqi Technology Co., Ltd.) have certain advantage.Be embodied in: 1, the lateral force of slide block is null under the situation of no unbalance loading, has so both guaranteed the working life of guide rail, has also improved formed precision.2, the reinforcement function of symmetrical six bar mechanism is more obvious, has reduced motor driving moment.But there are the following problems for symmetrical six link lever press driving mechanisms: 1, the bracket height size is big, occupies height space, needs tall and big delivery room, thereby has increased the construction cost of factory building; 2, effectively the reinforcement stroke is short, causes this mechanism's operating range short.
The utility model provides a kind of toggle lever pressure transmission mechanism, and reinforcement multiple, effective reinforcement stroke obviously are better than symmetrical six bar mechanism; And when having identical ram travel, mechanism of the present utility model total height is lower than symmetrical six bar mechanism, more can adapt to little factory building, reduces construction cost; When thereby its symmetric arrangement is formed the toggle lever pressure transmission mechanism of symmetry, under the situation of no unbalance loading, do not have the slide block lateral force simultaneously yet, eliminate slide block, guarantee Forming Quality the side pressure of guide rail and the wearing and tearing that bring thereof.
The model utility content
For realizing the purpose of this utility model, the concrete technological scheme of employing is:
A kind of toggle lever pressure transmission mechanism, comprise slide block, driving source, driveshaft and elbow-bar mechanism, described elbow-bar mechanism is two, be symmetrically arranged in the vertical center line of described toggle lever pressure transmission mechanism both sides, this elbow-bar mechanism comprises bracket, lower elbow lever and intermediate connecting rod, last bracket is by the toggle link hinge, connect hinge and upper beam hinge respectively with lower elbow lever one end, intermediate connecting rod one end links to each other with frame, the lower elbow lever the other end is connected with slide block by the slide block hinge, the intermediate connecting rod the other end is connected with driving block by driving hinge
It is characterized in that, in each described elbow-bar mechanism, in the same plane to drive hinge and and is connected the line segment that the hinge axle center is an end points and pass through the straight line in upper beam hinge axle center and toggle link hinge axle center, and in the entire work process of mechanism, remain non-intersect.
Driving block described in the utility model is horizontal reciprocating movement or up-and-down movement on driveshaft under drive source drives, thereby drives elbow-bar mechanism work.
In each described elbow-bar mechanism of the present utility model, the number of last bracket, lower elbow lever and intermediate connecting rod is at least one.
Driving block described in the utility model is at least one, and each driving block is driven by driving source by at least one driveshaft.
Driving source described in the utility model is a motor, described driveshaft is made up of screw rod and nut, nut and screw rod constitute the ball screw structure, motor is connected with screw rod or nut, nut or screw rod are fixed on the driving block, thereby drive nut or screw rod to-and-fro motion promotion driving block by the rotation of screw rod or nut.
Be connected by worm and gear and/or gear train between motor of the present utility model and screw rod or the nut.
Driving source described in the utility model is an oil hydraulic cylinder, and driveshaft is the piston rod of oil hydraulic cylinder, and the termination of piston rod is fixed on the driving block.
Upward bracket described in the utility model is set square triangle, circular plate or support.
Two elbow-bar mechanism that are symmetric arrangement described in the utility model replace with single elbow-bar mechanism.
A kind of press machine or injection machine comprise the described toggle lever pressure transmission mechanism of one of frame, guide rail, worktable and technique scheme.
The utility model drive characteristics is: driveshaft drives driving block and moves back and forth along the driveshaft axis, make the connection hinge of intermediate connecting rod drive go up the bracket bar and swing, make the toggle link hinge of bracket drive the lower elbow lever promotion slide block hinge that acts synergistically simultaneously slide block is moved up and down along vertical track.
The utility model utilizes an end of driving block and intermediate connecting rod hinged, the other end of intermediate connecting rod and last bracket are hinged, and last bracket is hinged with lower elbow lever by the toggle link hinge, constitutes boosting mechanism jointly, drive driving block with a driveshaft, then can make driving block do straight reciprocating motion.In the symplex structure structure, slide block is to the guide rail non-lateral pressure, and the power of can reducing friction significantly improves transmission efficiency.Owing to use toggle link reinforcement and set square triangle reinforcement principle, use press machine of the present utility model to compare with traditional crank connecting rod transmission type press machine, crank toggle link transmission type press machine, under identical nominal operation load, can significantly reduce input power; Load rating working stroke scope is bigger; When using motor to make driving source, the may command slide block is done variable motion, and increases work efficiency.The existing mechanical press of press machine that constitutes with the utility model fast, location and the high characteristic of repetitive positioning accuracy, the long Pressure characteristics of load rating working stroke of hydraulic press is arranged again.
When the utility model adopts AC motor to drive, energy that can only output needs when work, for intermittently used machines such as press machine, at upper and lower material consumed energy not in the time, so than general general driving mode, energy-conservation substantially more than 50%.Can utilize the control characteristic of motor, the control slide block is done variable motion, increases work efficiency.
The characteristic of the existing fluid drive mechanism of the utility model has the characteristic of crank-connecting rod transmission, toggle link driving mechanism again, has boosting function; Can be in most of stroke range of slide block movement with load rating work, slide block equals zero to the lateral force of guide rail in the total travel scope of motion, and slide block can variable motion, can pressurize at lower dead centre; Be applicable to the shaping of metal, nonmetal and special material.
Description of drawings
Fig. 1 is the utility model embodiment one a structural representation;
Fig. 2 is the utility model embodiment two a structural representation;
Fig. 3 is the utility model embodiment three a structural representation;
Fig. 4 is the utility model embodiment four a structural representation one;
Fig. 5 is the utility model embodiment four a structural representation two;
Embodiment
Below in conjunction with drawings and Examples toggle lever pressure transmission mechanism of the present utility model is further specified.
Embodiment one
As shown in Figure 1, be fixed with the first upper beam hinge 12A on the bracket 8A on first, the first toggle link hinge 14A is connected hinge 13A with first, bracket 8A is connected with frame 17 by the first upper beam hinge 12A on first; The first lower elbow lever 9A, one end is connected with bracket 8A on first by the first toggle link hinge 14A, and the first lower elbow lever 9A the other end is connected with slide block 10 by the first slide block hinge 15A; The end of the first intermediate connecting rod 7A connects hinge 13A by first and is connected with bracket 8A on first, and the other end of the first intermediate connecting rod 7A drives hinge 11A by first and is connected with the first driving block 6A.
Symmetrically, the elbow-bar mechanism that is positioned at the vertical center line right side of the utility model mechanism is being carried out the motion with the left side symmetry.Be fixed with the second upper beam hinge 12B on second on the bracket 8B, the second toggle link hinge 14B is connected hinge 13B with second, bracket 8B is connected with frame 17 by the second upper beam hinge 12B on second; The second lower elbow lever 9B, one end is connected with bracket 8B on second by the second toggle link hinge 14B, and the second lower elbow lever 9B the other end is connected with slide block 10 by the second slide block hinge 15B; The end of the second intermediate connecting rod 7B connects hinge 13B by second and is connected with bracket 8B on second, and the other end of the second intermediate connecting rod 7B drives hinge 11B by second and is connected with the second driving block 6B.
The first driving block 6A drives hinge 11A by first and is connected with the first intermediate connecting rod 7A, and the second driving block 6B drives hinge 11B by second and is connected with the second intermediate connecting rod 7B, is subjected to slideway 5 constraints, keeps horizontal rectilinear motion, prevents the stressed shakiness of bringing;
Motor 1 flatly is installed on the frame 17, and motor 1 is connected with screw rod 3 by shaft joint 2, and the first nut 4A on the screw rod 3 is fixed on the first driving block 6A, and the second nut 4B is fixed on driving block 6B, and the rotation direction of two nuts is opposite.The rotation of motor 1 can allow the first driving block 6A and the second driving block 6B move along horizontal opposite direction, finishes holosymmetric work thereby drive two elbow-bar mechanism.Motor 1 can drive in positive and negative two directions rotation, can control output torque and rotating speed.
Slide block 10 is connected with the described first lower elbow lever 9A by the first slide block hinge 15A, is connected with the described second lower elbow lever 9B by the second slide block hinge 15B, and slide block 10 leads by guide rail 16, prevents the shakiness of being brought by unbalance loading.
Slide block 10 has upper dead center and lower dead centre at work, and this is determined by linkage mechanism itself.According to actual conditions, each pole length difference in the elbow-bar mechanism, mechanism's state can be different when it was in lower dead centre.When it is in lower dead centre, mechanism's state may be in the vertical state for: the straight line by the first upper beam hinge 12A and the first toggle link hinge 14A and the straight line by the second upper beam hinge 12B and the second toggle link hinge 14B, perhaps drive hinge 11A is connected hinge 13A with first straight line and be in the vertical state by the second driving hinge 11B with second straight line that is connected hinge 13B by first, perhaps four lines all are verticals.
As the first driving block 6A and the second driving block 6B during near the vertical center line of this toggle lever pressure transmission mechanism, slide block 10 is in the upper dead center of stroke.
Connect with first that hinge 13A axle center and first drives line segment that hinge 11A axle center is an end points and the straight line by the first upper beam hinge 12A axle center and the first toggle link hinge 14A axle center is positioned at same plane, and in entire work process, remain non-intersect.Symmetrically, driving hinge 11B axle center with the second connection hinge 13B axle center and second is the line segment of end points, be positioned at same plane with straight line, and in entire work process, remain non-intersect by the second upper beam hinge 12B axle center and the second toggle link hinge 14B axle center.
Embodiment two
As shown in Figure 2, in the present embodiment, described toggle lever pressure transmission mechanism replaces with single elbow-bar mechanism with two elbow-bar mechanism of the symmetry among the embodiment one.Concrete layout is as follows: upward be fixed with upper beam hinge 12, toggle link hinge 14 and be connected hinge 13 on the bracket 8, last bracket 8 is connected with frame 17 by upper beam hinge 12; Lower elbow lever 9 one ends are connected with last bracket 8 by toggle link hinge 14, and lower elbow lever 9 the other ends are connected with slide block 10 by slide block hinge 15; One end of intermediate connecting rod 7 is connected with last bracket 8 by connecting hinge 13, and the other end of intermediate connecting rod 7 is connected with driving block 6 by driving hinge 11.
Driving block 6 is connected with intermediate connecting rod 7 by driving hinge 11, is subjected to slideway 5 constraints, keeps straight line motion, prevents the stressed shakiness of bringing.
Motor 1 flatly is installed on the frame, and motor 1 is connected with screw rod 3 by shaft joint 2, and the nut 4 on the screw rod 3 is fixed on driving block 6, and motor 1 can drive in positive and negative two directions rotation, can control output torque and rotating speed.
Slide block 10 is connected with described lower elbow lever 9 by slide block hinge 15, and slide block 10 leads by guide rail 16.
When connecting hinge 11 and be positioned at from farthest position of upper beam hinge 12 horizontal equivalents, slide block 10 is in the upper dead center of stroke.When slide block 10 is in bottom-end of stroke, be in the vertical state by driving hinge 11 with the straight line that is connected hinge 13, perhaps the straight line by upper beam hinge 12 and toggle link hinge 14 is in the vertical state, and perhaps two straight lines all are verticals simultaneously.
Connecting hinge 12 axle center and to drive line segment that hinge 11 axle center are end points and straight line by upper beam hinge 12 axle center and toggle link hinge 14 axle center is positioned at same plane, and in entire work process, remain non-intersect.
This mechanism can not guarantee to allow slide block all not have lateral force in total travel as embodiment one, but can be by a plurality of present embodiment symmetric arrangement, to eliminate the lateral force of slide block.
Embodiment three
As shown in Figure 3, in the present embodiment, with the motor among the embodiment two 1, coupling 2, screw rod 3, nut 4, slideway 5, driving block 6 replaces with vertical by horizontal arrangement and arranges.Other constituent element is identical with embodiment two, under the driving of motor 1, screw rod 3, makes slide block do upper and lower moving along the vertical line direction.
When connecting hinge 13 and be positioned at from farthest position of upper beam hinge 12 horizontal equivalents, slide block 10 is in the upper dead center of stroke.When slide block 10 is in bottom-end of stroke, be in level by driving hinge 11 with the straight line that is connected hinge 13, perhaps the straight line by upper beam hinge 12 and toggle link hinge 14 is in the vertical state, and perhaps two condition occurs simultaneously.
Connecting hinge 12 axle center and to drive line segment that hinge 11 axle center are end points and straight line by upper beam hinge 12 axle center and toggle link hinge 14 axle center is positioned at same plane, and in entire work process, remain non-intersect.
This mechanism can not guarantee to allow slide block all not have lateral force in total travel as embodiment one, but can be by a plurality of present embodiment symmetric arrangement, to eliminate the lateral force of slide block.
Embodiment four
As shown in Figure 4, in the present embodiment, first and second driving blocks among the embodiment one are merged into a driving block, and it is changed into vertical movement by horizontal motion, correspondingly first and second nuts are merged into a nut, motor, coupling and screw rod etc. are also done corresponding the variation simultaneously, and the layout of miscellaneous part and embodiment one are similar.
Concrete arrange as follows: be fixed with the first upper beam hinge 12A on first on the bracket 8A, the first toggle link hinge 14A is connected hinge 13A with first, bracket 8A passes through the first upper beam hinge 12A and is connected with frame 17 on first; The first lower elbow lever 9A, one end is connected with bracket 8A on first by the first toggle link hinge 14A, and the first lower elbow lever 9A the other end is connected with slide block 10 by the first slide block hinge 15A; The end of the first intermediate connecting rod 7A connects hinge 13A by first and is connected with bracket 8A on first, and the other end of the first intermediate connecting rod 7A drives hinge 11A by first and is connected with driving block 6.
Symmetrically, the elbow-bar mechanism that is positioned at the vertical center line right side of the utility model mechanism is being carried out the motion with the left side symmetry.Be fixed with the second upper beam hinge 12B on second on the bracket 8B, the second toggle link hinge 14B is connected hinge 13B with second, bracket 8B is connected with frame 17 by the second upper beam hinge 12B on second; The second lower elbow lever 9B, one end is connected with bracket 8B on second by the second toggle link hinge 14B, and the second lower elbow lever 9B the other end is connected with slide block 10 by the second slide block hinge 15B; The end of the second intermediate connecting rod 7B connects hinge 13B by second and is connected with bracket 8B on second, and the other end of the second intermediate connecting rod 7B drives hinge 11B by second and is connected with driving block 6.
Motor 1 is installed on the frame 17, and the screw rod 3 that motor 1 is arranged by shaft joint 2 and vertical is connected, and the nut 4 on the screw rod 3 is fixed on the driving block 6.The rotation of motor 1 drives driving block 6 motions, thereby drives the work of symmetry fully of two elbow-bar mechanism.Motor 1 can drive in positive and negative two directions rotation, can control output torque and rotating speed.Driving block 6 need not the constraint of slideway 5.
Connect with first that hinge 13A axle center and first drives line segment that hinge 11A axle center is an end points and the straight line by the first upper beam hinge 12A axle center and the first toggle link hinge 14A axle center is positioned at same plane, and in entire work process, remain non-intersect.Symmetrically, driving hinge 11B axle center with the second connection hinge 13B axle center and second is the line segment of end points, be positioned at same plane with straight line, and in entire work process, remain non-intersect by the second upper beam hinge 12B axle center and the second toggle link hinge 14B axle center.
As shown in Figure 5, do not interfere, in mechanism, can also increase by the 3rd intermediate connecting rod 7C, the 4th intermediate connecting rod 7D, and the 3rd lower elbow lever 9C and the 4th lower elbow lever 9D in order to make mechanism.
Driving source is a motor in the foregoing description, and driveshaft is made up of screw rod and nut, and nut and screw rod constitute the ball screw structure, and motor links by shaft joint and screw rod, and nut is fixed on the driving block; In addition, also can pass through worm and gear between motor and the screw rod, gear train and other mechanisms connect; In addition, motor also can drive nut and rotate, and drives screw rod and moves up and down, to promote driving block.The utility model can also adopt hydraulic system as driving source, and driveshaft is the piston rod of oil hydraulic cylinder, and the termination of piston rod is fixed on the driving block.
The utility model is installed on the custom-designed fuselage that has worktable 18, a guide rail 16 constitutes press machine or the injection machine that can be used for plastic working, the effect of guide rail 16 is constraint slide blocks 10, when making it in pressure processing, eccentric load to occur, guide rail can retrain slide block and keep straight line motion, thereby guarantees machining accuracy.Mould is installed in bottom at slide block, at table top bed die is installed, and promptly can be used for the plastic workings such as punching press, pull and stretch, extruding, impression of material.

Claims (10)

1. toggle lever pressure transmission mechanism, comprise slide block, driving source, driveshaft and elbow-bar mechanism, described elbow-bar mechanism is two, be symmetrically arranged in the vertical center line of described toggle lever pressure transmission mechanism both sides, this elbow-bar mechanism comprises bracket, lower elbow lever and intermediate connecting rod, last bracket is by the toggle link hinge, connect hinge and upper beam hinge respectively with lower elbow lever one end, intermediate connecting rod one end links to each other with frame, the lower elbow lever the other end is connected with slide block by the slide block hinge, the intermediate connecting rod the other end is connected with driving block by driving hinge
It is characterized in that, in each described elbow-bar mechanism, in the same plane to drive hinge and and is connected the line segment that the hinge axle center is an end points and pass through the straight line in upper beam hinge axle center and toggle link hinge axle center, and in the entire work process of mechanism, remain non-intersect.
2. toggle lever pressure transmission mechanism as claimed in claim 1 is characterized in that, described driving block is horizontal reciprocating movement or up-and-down movement on driveshaft under drive source drives, thereby drives elbow-bar mechanism work.
3. toggle lever pressure transmission mechanism as claimed in claim 1 or 2 is characterized in that, in each described elbow-bar mechanism, the number of last bracket, lower elbow lever and intermediate connecting rod is at least one.
4. toggle lever pressure transmission mechanism as claimed in claim 1 or 2 is characterized in that, described driving block is at least one, and each driving block is driven by driving source by at least one driveshaft.
5. toggle lever pressure transmission mechanism as claimed in claim 1 or 2, it is characterized in that, described driving source is a motor, described driveshaft is made up of screw rod and nut, nut and screw rod constitute the ball screw structure, motor is connected with screw rod or nut, and nut or screw rod are fixed on the driving block, thereby drives nut or screw rod to-and-fro motion promotion driving block by the rotation of screw rod or nut.
6. toggle lever pressure transmission mechanism as claimed in claim 5 is characterized in that, is connected by worm and gear and/or gear train between motor and screw rod or the nut.
7. toggle lever pressure transmission mechanism as claimed in claim 1 or 2 is characterized in that, described driving source is an oil hydraulic cylinder, and driveshaft is the piston rod of oil hydraulic cylinder, and the termination of piston rod is fixed on the driving block.
8. toggle lever pressure transmission mechanism as claimed in claim 1 or 2 is characterized in that: described upward bracket is set square triangle, circular plate or support.
9. toggle lever pressure transmission mechanism as claimed in claim 1 or 2 is characterized in that, described two elbow-bar mechanism that are symmetric arrangement replace with single elbow-bar mechanism.
10. press machine or injection machine comprise one of frame, guide rail, worktable and aforesaid right requirement 1-9 described toggle lever pressure transmission mechanism.
CN2010201193954U 2010-02-10 2010-02-10 Toggle rod pressure transmission mechanism and pressure machine or injection molding machine comprising same Expired - Lifetime CN201687906U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101788043A (en) * 2010-02-10 2010-07-28 华中科技大学 Toggle lever pressure transmission mechanism
CN102242798A (en) * 2011-05-30 2011-11-16 吕晶 Multi-rod driving mechanism
CN102909875A (en) * 2012-10-26 2013-02-06 苏州农业职业技术学院 Press machine based on ball screw and hinged rod force amplifier
CN109175299A (en) * 2018-11-13 2019-01-11 蚌埠隆华压铸机有限公司 A kind of clamping for die casting machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101788043A (en) * 2010-02-10 2010-07-28 华中科技大学 Toggle lever pressure transmission mechanism
CN102242798A (en) * 2011-05-30 2011-11-16 吕晶 Multi-rod driving mechanism
CN102909875A (en) * 2012-10-26 2013-02-06 苏州农业职业技术学院 Press machine based on ball screw and hinged rod force amplifier
CN109175299A (en) * 2018-11-13 2019-01-11 蚌埠隆华压铸机有限公司 A kind of clamping for die casting machine

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Granted publication date: 20101229

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