Press stroke automatic adjustment structure

An automatic adjustment and press technology, which is applied in the field of presses, can solve the problems of manual adjustment, poor adjustment of eccentric sleeves and connecting rods, and difficult control of adjustment accuracy, and achieve the effect of simple stroke adjustment process

Active Publication Date: 2014-10-08
YANGLI GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the structure of the eccentric sleeve is adjusted with a locking tooth structure on the eccentric sleeve, manual rotation adjustment makes it difficult to control the adjustment accuracy.
The eccentric sleeve is installed inside the connecting rod. When the machine tool is working, the connecting part of the eccentric sleeve and the connecting rod will heat up. After a long working time, it will cause the eccentric sleeve and the connecting rod to heat up and expand, making it difficult to adjust, which further increases the difficulty of adjustment.

Method used

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  • Press stroke automatic adjustment structure
  • Press stroke automatic adjustment structure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 Shown is the automatic stroke adjustment structure of the press machine of the present invention, including a crankshaft 8, which is rotatably supported on the fuselage support, and an eccentric sleeve 4 that can rotate along the axial direction of the eccentric journal is sleeved on the eccentric journal of the crankshaft 8, and the eccentric One end of the sleeve 4 is provided with a locking device, and the other end is provided with an eccentricity adjustment device. The locking device includes a locking sleeve 1 which is set on the outer periphery of the eccentric journal and has the same eccentricity as the locking sleeve 1. One end of the locking sleeve 1 is provided with a spring 10, The other end is provided with a pneumatic device 1, and the corresponding end faces of the locking sleeve 1 and the eccentric sleeve 4 are respectively provided with matching locking side teeth. The eccentricity adjusting device includes an adjusting inner ring gear ...

Embodiment 2

[0018] Such as figure 2 As shown, the difference from Embodiment 1 is that in this embodiment, two sets of eccentric sleeves 4 are arranged side by side on the crankshaft 8, and each set of eccentric sleeves 4 is connected to the crankshaft 8 through its own locking device and eccentric distance eccentric device. The eccentric curved neck connection realizes the synchronous adjustment of the stroke of the single-axis double-point press or the stamping movement. In the processing and manufacturing of this embodiment, the parts of the eccentric sleeve 4, the locking device and the eccentricity adjustment device are paired and processed and assembled to ensure the consistency of their assembly accuracy. During work, through the rotation of the crankshaft 8 and the synchronous action of the two sets of eccentric distance adjustment devices, the synchronous adjustment of the stroke of the two-point press is realized. The relative rotation power of the two sets of eccentric sleeves...

Embodiment 3

[0020]The difference from Embodiment 1 is that in this embodiment, the crankshafts 8 are two groups arranged side by side and rotate synchronously through mutually meshing gears. Each group of crankshafts 8 is provided with eccentric sleeves 4 respectively, and each group of eccentric sleeves 4 passes through the The locking device and the eccentric distance adjusting device are connected with the eccentric journal of the crankshaft 8 to realize the synchronous adjustment or stamping movement of the stroke of the biaxial double point press. In this embodiment, the actions of the two sets of eccentric sleeves 4 are realized by the synchronous rotation of the two sets of crankshafts 8. The gears with the same parameters and paired with each other can ensure the synchronous rotation of the two sets of crankshafts 8 and drive the two sets of eccentric The synchronous action of sets 4 realizes the synchronous adjustment of the stroke of the biaxial double point press.

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Abstract

The invention relates to an automatic travel adjusting structure for a press in the technical field of presses. The automatic travel adjusting structure comprises a crankshaft; an eccentric shaft neck of the crankshaft is sleeved with an eccentric bushing capable of rotating axially along the eccentric shaft neck; and one end of the eccentric bushing is provided with a locking device, and the other end of the eccentric bushing is provided with an eccentricity adjusting device. According to the automatic travel adjusting structure, the eccentric bushing is connected with the crankshaft through the locking device and the eccentricity adjusting device, and the pressing motion and travel adjusting motion of the press are realized through rotation of the crankshaft; and during travel adjustment, the power for relative rotation of the eccentric bushing and the crankshaft comes from the rotating crankshaft, so that the travel of the press is convenient to adjust in a labor-saving mode, and is automatically adjusted through the rotation of the crankshaft, the automatic travel adjusting structure is suitable for automatically, synchronously and accurately adjusting the travel of a single point press, a double-point press or a four-point press, and the application range of the press is widened.

Description

technical field [0001] The invention relates to the technical field of presses, in particular to an automatic stroke adjustment structure of a press. 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. After searching, the stroke-adjustable presses are mainly single-point bell crank presses. The bell crank type stroke adjustable press currently produced is mainly to adjust the eccentricity by adjusting the eccentric sleeve to realize the purpose of adjusting the stroke amount. However, because the structure of the eccentric sleeve is adjusted by disposing a locking tooth structure on the eccentric sleeve, manual rotation adjustment makes it difficult to control the adjustment accuracy. The eccentric sleeve is installed inside the connecting rod. When the machine tool is working, the connecting part of the eccentric slee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B30B15/00B30B1/26
Inventor 何彦忠黄建民
Owner YANGLI GRP CORP LTD
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