Synchronous regulation structure for stroke of pressing machine

A technology of synchronous adjustment and press, which is applied in the field of presses, and can solve the problems of cumbersome adjustment steps, complex structure, and inability to ensure the adjustment accuracy.

Active Publication Date: 2014-07-16
YANGLI GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure is only suitable for single-axis double-point structure, and the structure is complex, the adjustment steps are cumbersome, the adjustment error is large, and the adjustment accuracy cannot be guaranteed.
Other similar eccentric sleeve adjustment structures also have the problem of poor adjustment synchronization and accuracy

Method used

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  • Synchronous regulation structure for stroke of pressing machine
  • Synchronous regulation structure for stroke of pressing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 Shown is the structural diagram of embodiment 1 of the press stroke synchronous adjustment structure of the present invention, including the crankshaft 10, the connecting rod 4 and the eccentricity adjustment device, the crankshaft 10 is a group, supported on the fuselage support 8, and the connecting rod 4 is The two groups are respectively connected to the crankshaft 10 through two sets of eccentric distance adjustment devices to synchronously drive the slider mechanism. It is fitted on the outer circumference of the connecting rod journal of the crankshaft 10 and can rotate and slide along the axial direction of the connecting rod journal. The connecting rod 4 is connected to the outer circumference of the eccentric sleeve 5 in rotation. At both ends, the locking sleeve 9 and the main journal of the crankshaft 10 are connected and fixed by keys to ensure that the locking sleeve 9 and the crankshaft 10 rotate synchronously, the connecting rod end cove...

Embodiment 2

[0018] The difference between this embodiment and Embodiment 1 is that this embodiment is suitable for the stroke adjustment structure of a two-axis four-point large table top press. The crankshafts 10 are connected, and the two groups of crankshafts 10 are driven to rotate synchronously through the gearwheels 10 meshing with each other, and the connecting rods on the two groups of crankshafts 10 synchronously drive the slider mechanism. During operation, the two groups of crankshafts 10 rotate in a completely synchronous manner through the meshing movement of the large gear 11 and drive the components of the eccentricity adjustment device to act synchronously in a completely synchronous manner, so as to realize the synchronous and accurate adjustment of the stroke of the slider.

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PUM

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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 [0001] The invention relates to the technical field of presses, in particular to a double-point or four-point press stroke synchronous adjustment structure. Background technique [0002] At present, the mechanical presses used at home and abroad are divided into fixed-stroke presses and adjustable-stroke presses according to whether the stroke amount is variable. The stroke-adjustable presses are mainly single-point crank presses, and double-point crank presses are more common. One-point and four-point stroke adjustable presses are difficult to synchronize and accurately adjust the precision, which limits the scope of use of the press. [0003] The adjustment structure of the stroke adjustable press in the prior art generally uses the eccentric sleeve inside the rotating connecting rod to change the relative rotation angle between the eccentric sleeve and the eccentric shaft to adjust different eccentric distances, so as to realize stroke adjustment. The act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B30B15/00
Inventor 何彦忠黄建民
Owner YANGLI GRP CORP LTD
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