SU846141A1 - Mechanised hand shears - Google Patents

Description

one

The invention relates to the processing of metals by pressure, in particular to manual shears, and can be used in the blank production.

Mechanized hand shears are known, comprising a housing, a crank drive shaft with two cranks offset by 180 ° to each other, outer and inner sliders with heads associated with the cranks, and work tools mounted on the outer and inner sliders fl .

The disadvantage of these scissors is the complexity of their design and low reliability of operation.

The purpose of the invention is to simplify the design and increase reliability.

This goal is achieved by the fact that in mechanized hand shears, comprising a housing, a drive crank shaft with two cranks offset 180 relative to each other, outer and inner sliders with heads connected to the cranks, and working tools mounted on the outer and inner rams, heads outer and

internal sliders are mounted directly on the cranks, while in the head of the external slide a groove is made under the head of the internal slide.

The crank associated with the head of the outer slide is made with zero eccentricity.

Fig. 1 shows a mechanized hand-held scissors, a general view in section; in Fig. 2a, a section A-A in Fig. 1; in Fig. 26, a section B-B in Fig. 1} on fig.Z - installation of working tools.

Manual Mechanized Scissors

15 contain body 1, crank shaft

2 with two cranks 3 and 4, shifted relative to each other by 180, outer 5 and inner slider

20

with heads connected to cranks 3 and 4 and carrying working tools 7 and 8. External 5 and internal 6 slide blocks are mounted directly on the cranks

25

3 and 4, while a groove is made in the head of the outer slider for accommodating the head of the inner slider 6. Curvature 3, associated with the outer slider 5, can be made with zero eccentricity. Workers in30

The tools 7 and 8 can be replaced with a cochlea 9 with a lower knife 10, mounted on the lower end of the outer slider 5, and the upper knife 11, | mounted on the holder 12 of the Inner slider 6, the Rollers 13 serve to guide the outer slider 5,

Mechanized hand shears work as follows.

After the drive motor is turned on, rotation from it through the gearbox is transmitted to the crank shaft 2, which through crank 3 transfers the force to the outer port 5, alternating reciprocating along the rollers 13 installed in the slots fixedly in the sheath body; Simultaneously through the crank 4 C; crank shaft force transfer to the internal slider b, perch joint and reciprocating in the longitudinal hole of the outer slider.

Due to the fact that on the lower sliders, the working octanes of the knife or punching scissors are installed when moving the sliders towards a friend, the working bodies are produced by pesaaije or cutting of the sheet being processed.

i When moving the sliders in opposite to the opposite directions, relative to each other, scissors are fed forward and aaxieax of the sheet for all of the cutting - cutting,

i Due to the fact that in order to obtain shears of a knife or cutting type, it is quite simple to change the working parts, it is suggested that, in one place, the scissors allow obtaining high

the degree of unification of the knife and cutting scissors. In addition, the installation of psheuns with working bodies directly on the crank shaft eliminates the vibration of the shear body from the moving masses.

The use of the present invention will simplify the design of mechanized manual scissors and increase the quality of their work.

Claims (1)

1. USSR author's certificate No. 595091, cl. B 23 O 29/02, 1976.