Dynamic model platform automatic balancing arrangement
Technical field
The present invention relates to a kind of bascule, relate in particular to a kind of dynamic model platform automatic balancing arrangement.
Background technology
At present; Thermoforming machine generally comprises frame, guide pillar, upward fixed station, the moving platform of cope match-plate pattern, cope match-plate pattern, following fixed station, lower bolster move platform and lower bolster; Moving platform of cope match-plate pattern and the moving platform of lower bolster are installed on the guide pillar and can slide up and down along guide pillar; Cope match-plate pattern is connected with the moving platform of cope match-plate pattern, and lower bolster is connected with the moving platform of lower bolster, and cope match-plate pattern moves between platform and the last fixed station, lower bolster moves between platform and the following fixed station and also is provided with bar-link drive.This thermoforming machine is when matched moulds moulding or stamping-out, and moving platform of cope match-plate pattern and the moving platform of lower bolster pump, because the own wt of moving platform of cope match-plate pattern and the moving platform of lower bolster produces bigger inertia, cause matched moulds unstable.For addressing this problem, traditional way is in mounting spring between moving platform of cope match-plate pattern and the cope match-plate pattern, between the moving platform of lower bolster and the lower bolster, withstands the moving platform of cope match-plate pattern and moves platform with lower bolster, to reduce its impulsive force.But the structure of above-mentioned this increase spring; Also there is following shortcoming: in the reciprocating motion process of moving platform of cope match-plate pattern and the moving platform of lower bolster; Bar-link drive need apply bigger active force to moving platform of cope match-plate pattern and the moving platform of lower bolster; To overcome the weight of moving platform of cope match-plate pattern and the moving platform self of lower bolster, reactive loss is bigger; In addition, the resilience of spring after by compression produces bigger instantaneous impulse force to moving platform of cope match-plate pattern and the moving platform of lower bolster, and is difficult to control, thereby cause vibrations easily, causes the matched moulds instability.
Summary of the invention
The technical problem that the present invention will solve provides a kind of dynamic model platform automatic balancing arrangement, and this dynamic model platform automatic balancing arrangement can reduce inertia impact, reduces reactive loss, raises the efficiency, and reduces vibrations, and matched moulds is stable.The technical scheme that adopts is following:
A kind of dynamic model platform automatic balancing arrangement comprises that the moving platform of cope match-plate pattern and the lower bolster of thermoforming machine moves platform, it is characterized in that: also comprise at least one support member and at least one bar that is flexible coupling; Support member is rotatable to be installed on the frame of thermoforming machine, and is in the top of the last fixed station lower limb of thermoforming machine; The bar that is flexible coupling is walked around support member, and an end of the bar that is flexible coupling is connected with the moving platform of cope match-plate pattern, and the other end of the bar that is flexible coupling is connected with the moving platform of lower bolster.
The bar that is flexible coupling refers to have flexible, and stretch-proof, wear-resisting connection strap, for example glue strand, steel wire rope, chain etc.
Moving platform of cope match-plate pattern and the moving platform of lower bolster are through the bar that is flexible coupling; With the support member is the mutual draw of fulcrum; Both weight is cancelled out each other, thereby reduces cope match-plate pattern and the inertia impact of lower bolster when matched moulds, and does not have unmanageable thrust (like the screen resilience of conventional method medi-spring); Reduce vibrations, made matched moulds more stable; Simultaneously, because the mutual draw of moving platform of cope match-plate pattern and the moving platform of lower bolster, the moving platform of one of them template rises; Then the moving platform of another template descends; Therefore the active force of the moving platform of drive template (moving platform of cope match-plate pattern and the moving platform of lower bolster) rising is less, has reduced reactive loss, has improved efficient.
As preferred version of the present invention, it is characterized in that: also comprise buffer gear, the moving platform of said cope match-plate pattern all is connected with the two ends of flexible link through buffer gear with the moving platform of lower bolster; Buffer gear comprises pull bar, draw-bar seat and spring, and draw-bar seat is provided with pilot hole, and pull bar is in the pilot hole and can in pilot hole, slides up and down, and spring housing is on pull bar, and an end of spring is connected with draw-bar seat, and the other end of spring is connected with the lower end of pull bar; Draw-bar seat is installed on moving platform of cope match-plate pattern or the moving platform of lower bolster, and the upper end of pull bar is connected with an end of flexible link.Pull bar, draw-bar seat and spring cooperatively interact, and constitute buffer gear, when the moving platform quick acting of moving platform of cope match-plate pattern and lower bolster, play and cushion the excessive effect of instantaneous impulse force, make matched moulds more stable.
As the further preferred version of the present invention, it is characterized in that: said support member is a sprocket wheel, and the said bar that is flexible coupling is a chain.The fitness of sprocket wheel and chain is high, and chain positioning can not take place, and stability is higher.
As the further preferred version of the present invention, it is characterized in that: said support member is a pulley, and the said bar that is flexible coupling is a stay cord.The general strand rope that twists together by many steel wires that adopts of stay cord, tension, wear-resisting, bendability is good.
Description of drawings
Accompanying drawing 1 is the structural representation of the preferred embodiment for the present invention.
The specific embodiment
Do further explanation below in conjunction with accompanying drawing and preferred implementation of the present invention.
Shown in accompanying drawing, this dynamic model platform automatic balancing arrangement comprises the moving platform of the moving platform 1 of cope match-plate pattern, the lower bolster of thermoforming machine 2, two sprocket wheels 3 and two chains 4; Two rotatable respectively being installed on the frame 5 of thermoforming machine of sprocket wheel 3, and be in the top of the last fixed station 6 both sides lower limbs of thermoforming machine respectively; Chain 4 is walked around sprocket wheel 3, and an end of chain 4 is connected with the moving platform 1 of cope match-plate pattern, and the other end of chain 4 is connected with the moving platform 2 of lower bolster.
This dynamic model platform automatic balancing arrangement also comprises buffer gear 7, and the moving platform 1 of cope match-plate pattern all is connected through the two ends of buffer gear 7 with chain 4 with the moving platform 2 of lower bolster; Buffer gear 7 comprises pull bar 701, draw-bar seat 702 and spring 703; Draw-bar seat 702 is provided with pilot hole 704; Pull bar 701 is in the pilot hole 704 and can in pilot hole 704, slides up and down; Spring 703 is enclosed within on the pull bar 701, and an end of spring 703 is connected with draw-bar seat 702, and the other end of spring 703 is connected with the lower end of pull bar 702; Draw-bar seat 701 is installed on the moving platform 1 (lower bolster moves platform 2) of cope match-plate pattern, and the upper end of pull bar 702 is connected with an end of chain 4.
The moving platform 1 of cope match-plate pattern passes through chain 4 with the moving platform 2 of lower bolster, is the mutual draw of fulcrum with sprocket wheel 3, and both weight is cancelled out each other; Thereby reduce cope match-plate pattern 8 and the inertia impact of lower bolster 9 when matched moulds; And there is not unmanageable thrust, reduced vibrations, make matched moulds more stable; Simultaneously, because the mutual draw of moving platform 1 of cope match-plate pattern and the moving platform 2 of lower bolster, the moving platform of one of them template rises; Then the moving platform of another template descends; So the active force of the moving platform of drive template (moving platform 1 of cope match-plate pattern and the moving platform 2 of lower bolster) rising is less, has reduced reactive loss, has improved efficient.
In another kind of preferred version of the present invention, support member adopts pulley, and the strip adoption stay cord is flexible coupling.