A kind of stroke multistage adjustable mechanism of press machine
Technical field
The utility model belongs to the press machine technical field, relates in particular to a kind of stroke multistage adjustable mechanism of press machine.
Background technology
In the prior art, connect the slide block that can vertically slide by connecting rod above the workbench of press machine, the connecting rod other end is hinged on an end of bent axle, and the eccentric throw twice of bent axle is ram travel.Bent axle is certain, and ram travel is certain.The press machine of this structure can not adjusting slider stroke, can't realize punching press to different moulds, limited its range of application.
The utility model content
Technical problem to be solved in the utility model provides a kind of stroke multistage adjustable mechanism of press machine, uses the multistage adjustable mechanism of the trip adjusting slider stroke easily, thereby can satisfy the punch process requirement of different moulds.
The utility model comprises the eccentric adjusting sleeve that is socketed on first bent axle and can rotates along first bent axle, on the sidewall of eccentric adjusting sleeve one end external tooth is set; Be socketed in interconnective second bent axle of first bent axle on and keep relative static eccentric bushing with second bent axle, on the sidewall of eccentric bushing one end external tooth is set, the end that external tooth is set of above-mentioned eccentric adjusting sleeve and the end that external tooth is set of eccentric bushing are close mutually; The utility model also comprises internal gear, be furnished with a through hole that internal tooth is set on the wheel face of internal gear, internal gear is socketed on eccentric adjusting sleeve and the eccentric bushing by described through hole, and the internal tooth of internal gear is meshing with each other with the external tooth of eccentric adjusting sleeve and the external tooth of eccentric bushing in the lump; Gear shaft, it runs through eccentric bushing, runs through internal gear then again, the front end of described gear shaft is provided with knob, the fixedly connected external gear in rear end, external gear be located at a part of tooth that eccentric adjusting puts and be meshing with each other.
Before the adjusting slider stroke, promote internal gear and make it move away from eccentric adjusting sleeve, thereby make internal gear and eccentric adjusting sleeve disengaging along horizontal direction, turning knob at this moment, whole gear shaft promptly rotates thereupon.Because being fixedly connected on the external gear of gear shaft end is meshing with each other with the external tooth that is located at the eccentric adjusting sleeve end, so eccentric adjusting sleeve is corresponding to rotate, change the off-centre between eccentric adjusting sleeve and the eccentric bushing thus, promptly changed crankshaft eccentric, thereby changed ram travel.Use the multistage adjustable mechanism of the trip adjusting slider stroke easily, thereby can satisfy the punch process requirement of different moulds.
For the ease of observing the adjusting of ram travel, can be at an anterior fixedly sleeved external gear of gear shaft, an external gear and a digital gear are meshing with each other, and digital gear is connected at an end of eccentric bushing; The outer face of digital gear is provided with the ram travel scale, the outer end of digital gear is provided with step in, arranges face in the interior step, and face is connected an end of second bent axle, ram travel scale on the pointed digital gear outer face is set on the face with respect to the actionless pointer of face.
Promote internal gear for convenience, all flangeways can be set on the wheel rim of internal gear, on the press machine fuselage, connect a cylinder, the terminal handwheel that connects of the push rod of cylinder, a part of outer rim of handwheel is embedded in the flangeway of internal gear.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, an end of first bent axle 1 connects an end of second bent axle 2, and eccentric adjusting sleeve 3 is socketed on first bent axle 1, and preferably, eccentric adjusting sleeve 3 links to each other by copper sheathing with first bent axle 1, and eccentric adjusting sleeve 3 can rotate along first bent axle 1; Eccentric bushing 4 is socketed on second bent axle 2 and is spacing to prevent between the eccentric bushing 4 and second bent axle 2 relative motion taking place by key 5.On the sidewall of eccentric adjusting sleeve 3 one ends external tooth is set; In the same manner, on the sidewall of eccentric bushing 4 one ends external tooth is set also; Above-mentioned eccentric adjusting sleeve 3 end of external tooth is set and a end that eccentric bushing 4 is provided with external tooth close mutually.
Arrange a large through-hole and a small through hole on the wheel face of internal gear 6, the inner surface wall of large through-hole is provided with internal tooth, and the inner surface wall of small through hole is smooth.One all flangeway 6-1 are set on the wheel rim of internal gear 6.Above-mentioned internal gear 6 is socketed on eccentric adjusting sleeve 3 and the eccentric bushing 4 by large through-hole, and the internal tooth of internal gear 6 meshes the external tooth of eccentric adjusting sleeve 3 and the external tooth of eccentric bushing 4 in the lump.
Gear shaft 7 runs through eccentric bushing 4, passes the small through hole that is arranged on the internal gear 6 then again.The front end of described gear shaft 7 is provided with knob 7-1, the fixedly connected external gear 7-2 in rear end, and external gear 7-2 is meshing with each other with the external tooth that is located at eccentric adjusting sleeve 3 ends.Gear shaft 7 anterior and between knob 7-1 and external gear 7-2 a fixedly sleeved external gear 7-3, an external gear 7-3 and a digital gear 8 are meshing with each other, above-mentioned digital gear 8 is connected at an end of eccentric bushing 4, the outer face of digital gear 8 is provided with the ram travel scale, and the outer end of digital gear 8 is provided with step in.Face 9 is embedded in the interior step of digital gear 8, and interconnects with an end of second bent axle 2, and face 9 is provided with respect to face 9 actionless pointers, the ram travel scale on pointed digital gear 8 outer faces.
Cylinder 10 is connected on the fuselage, and the push rod end of cylinder 10 is connected with a handwheel 10-1, and a part of outer rim of handwheel 10-1 is embedded among the flangeway 6-1 of internal gear 6.
One end of connecting rod 11 is hinged and connected on the eccentric adjusting sleeve 3, and the other end connects the slide block 12 that can vertically slide, and preferably, connecting rod 11 links to each other with eccentric adjusting sleeve 3 by copper sheathing.
After the shutdown, along the handwheel 10-1 of horizontal direction away from eccentric adjusting sleeve 3 promotion cylinders 10, handwheel 10-1 promotes internal gear 6 makes itself and eccentric adjusting sleeve 3 break away from, and at this moment rotates the knob 7-1 that is arranged on gear shaft 7 front ends, and whole gear shaft 7 rotates thereupon.Be meshing with each other with the external tooth that is located at eccentric adjusting sleeve 3 ends owing to be fixedly connected on the external gear 7-2 of gear shaft 7 ends, so eccentric adjusting sleeve 3 corresponding rotating.Simultaneously, fixedly sleeved gear 7-3 in gear shaft 7 front portions also rotates, and the rotation of gear 7-3 drives digital gear 8 again and rotates, thus different ram travel scale on the pointed digital gear 8 of face 9.Tooth of revolution will make up a ram travel, and half of the eccentric adjusting sleeve 3 external tooth numbers of teeth is exactly alternative slider row number of passes.