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Press

A technology of presses and bars, applied in the field of presses, can solve the problems of complex structure, large action space, increase in quantity, etc., and achieve the effect of structure simplification

Active Publication Date: 2010-12-29
YAMADA DOBBY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the pair of connecting rods generate a swinging motion along with the eccentric motion of the eccentric portion of the crankshaft, requiring a large operating space.
In addition, the connecting rod increases the number of constituent elements of the link mechanism provided between the connecting rod and the slider for converting the swing motion of the connecting rod into the up and down motion of the slider, resulting in a complex structure

Method used

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Embodiment Construction

[0025] Such as figure 1 As shown, the press 10 of the present invention includes a machine base 12 and a frame 18, wherein the frame 18 has a plurality of struts 14 upstanding from the machine base to hold on the machine base in a spaced manner from the machine base 12. The upper beam (crown) 16 . The beam 16 is formed in a rectangular box shape as a whole, and a lower mold part is provided on the base 12 located below the beam 16, although not shown in the figure.

[0026] Such as figure 2 As shown, in the beam 16 , a crankshaft 20 having a pair of eccentric portions 20 a has one end of a main shaft portion 20 b protruding greatly from the beam 16 , and the crankshaft 20 is rotatably held. The protruding end of the main shaft part 20b is provided with: a driving force transmission device 22 having a conventionally known clutch and brake capable of intermittently transmitting the rotational force surrounding the main shaft part 20b of the crankshaft 20; and a flywheel 24. ...

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Abstract

The invention relates to a press capable of realizing simple structure, which comprises a crankshaft, a first lever, a second lever, a pair of oscillation levers, a balance weight and slider. The crankshaft is provided with an eccentric part; the first lever is provided with a slot which is capable of receiving the eccentric part and moving on the length direction, and can extend in a way of guiding the eccentric part along the width direction of the lever, so that the first lever performs reciprocating motion as rotation of the crankshaft; the oscillation levers connect corresponding end parts of the two levers respectively and are provided with oscillation shafts on respective center part, so the two levers perform reciprocating motion inversely; the balance weight and slider are respectively connected to two end parts of the pair of oscillation levers through a pair of linkage members, and move to approach or depart from each other as oscillation of the pair of the oscillation levers.

Description

technical field [0001] The present invention relates to a press, and more particularly to a press capable of achieving structural simplification. Background technique [0002] In a conventional press using a link mechanism, generally, the eccentric portion of the crankshaft is connected to the slider via a pair of connecting rods and a link mechanism connected to the connecting rods (for example, refer to Patent Document 1~3). The upper mold portion of the mold is attached to the slider. One end of each of the connecting rods is connected to the eccentric portion and arranged to extend in opposite directions from the eccentric portion. Each connecting rod swings around the pivot at the other end thereof as a swing center, thereby converting the eccentric motion of the eccentric portion of the crankshaft into swing motion. The link mechanism converts the swing motion converted by each connecting rod into the up and down motion of the slider. [0003] Patent Document 1: Ja...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B1/14
CPCB30B1/14B30B15/0064F16H21/34F16H21/36
Inventor 吉田晶洋
Owner YAMADA DOBBY
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