SU1204355A1 - Hold-down device - Google Patents

Description

The invention relates to mechanical engineering, in particular, to ancillary equipment for the mechanization of assembly and welding operations, and can be used to secure products in mechanized flow lines consisting of several conductors with automatic transportation of the product from one conductor to another.

The purpose of the invention is to increase the reliability of the device by eliminating the premature rotation of the clamping lever, I

FIG. 1 shows schematically the clamping device at the moment of pressing the parts; in fig. 2 - device located in the limited working space of the product after unclamping; in fig. 3 - device derived from the limited work space of the product; in fig. 4 is a section A-A in FIG. 3

The appliance includes a housing 1 with a driver fixed therein, shaped like a power cylinder 2, the stem of which is pivotally connected to the shoulder of the two shoulder presser lever 3 by means of an axis 4 with rollers 5 placed on it.

On the housing there are fixed locking strips 6 for the rollers, as well as flat guides 7, in which the slider 8 is placed with an emphasis limiting the turn of the clamping lever 3 in the direction opposite to the work clamp. The locking strips 6 are installed parallel to the guide 7. The clamping lever 3 is pivotally mounted on the slide 8.

The slider is spring-loaded by a spring 9) guided by a rod 10 fixed to the slider, which is also a pusher resting against the stops 11 and 12, limiting the move of the slider by the support nuts 13 and the support 14.

The clamping device operates as follows.

To press the part to the base surface include the power cylinder

2, whose stem, acting, acts on the pressure lever 3. Together with the pressure lever 3, the slider 8 under the influence of the spring 9 rises, at this time the rollers 5, entering into

contact with locking strips 6, catches along them (Fig. 3).

The slider 8 moves until the support nuts 13 are pressed against the stop 11 (FIG. 2), while the rollers

5 come out of contact with the strips 6, and the rod of the power cylinder 2, continuing its course, deploys the presser lever 3, carried out the pressure parts (Fig. 1).

To open the part, the piston rod of the power cylinder makes a reverse movement, while the clamping lever 3 is turned to the stop in the slider 8 (Fig. 2).

Then the rod, continuing its turn and Overcoming the force of the spring 9, lowers the clamping lever 3 together with the zune 8 down to the support stop in the stop 12 (Lig. 3). If necessary, the amount of movement of the clamping lever 3 is regulated by the support nuts 13 and the support 14.

For normal operation of the device, it is necessary that the length of the surfaces

the locking plates interacting with the rollers were smaller than the slide stroke by an amount sufficient to turn the pressure lever with the rod fully extended.

Since rollers are mounted on the axis of the swivel joint of the rod with the clamping lever, and locking strips for the rollers are fixed on the housing parallel to the rails, the proposed clamping device, in comparison with IZE / EAST, provides increased reliability by eliminating the premature rotation of the clamping lever.

/ f

ig. one

12

9 games g

Claims (1)

PRESSING DEVICE, comprising a housing with rails, a slide installed in the rails and a spring loaded relative to them, a two-shoulder pressure lever pivotally mounted on the slide and a drive, characterized in that, in order to increase reliability by eliminating premature rotation of the pressure lever, the drive is made in the form of a power cylinder , the rod of which is pivotally connected to the clamping lever and provided with rollers mounted on the axis of the pivot joint of the rod with the clamping lever, while on the housing parallel to the direction conductive strips secured to the locking clips. Joint venture