SU1433732A1 - Lever clamp for prewelding assembly - Google Patents

Abstract

The invention relates to welding, in particular to ancillary equipment for assembly and welding. The goal is to expand technological capabilities and increase technological capabilities and reliability by increasing clamping force without increasing drive power. When moving the rod of the pneumatic actuator 2 upward, the earring 9 rotates the rocker arm 5 through the clamping lever B. The latter, through the contact roller 6, interacts with the bevel A of the locking lever 15, which clamps the products 23 in the lateral direction through a spring-loaded stop 17. Then the roller 6 enters the profile section B of the lever 15 and fixes it, while unloading the pneumatic actuator stem from the force of the side clamp. With further movement of stock. A clamping lever 8 clamps the product 23 from above. This type of clamping blade provides a consistent clamping of the product in two mutually perpendicular directions and allows you to more reliably clamp items of complex configuration, 4 sludge.

Description

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i The invention relates to welding, in particular to ancillary equipment used in assembly and welding operations.

The purpose of the invention is to expand technological capabilities and increase reliability by increasing clamping force without increasing drive power.

i FIG. 1 shows schematically a lever mechanism for assembling for welding in the designated starting position; | figure 2 - the same, in the down position; fig.Z - the same, in the clamping position; Fig. 4 shows an embodiment of a mechanism for clamping a complicated configuration of a part when the upper hog is necessary.

I The lever lever for the assembly for welding contains a base 1, on which a fixed Eveno 2 (pneumatic actuator) is fixed, a rack 3 fixed on the base 1. On the rack 3 pivotally mounted on the axis 4 is the rocker arm 5, the Rocker arm 5 is equipped with a contract roller 6 mounted on the axis 7. The clamping lever 8 is pivotally connected to the rocker 5 and; an earring 9 by means of the axes 10 and I1. Earring 9 is installed along the axis when-- 1 watermark 2 and pivotally connected to | with it by means of axis 12. Earring 9 is made in the form of a fork. In order to preserve a certain kinematic motion of the links and exclude bending of the rod at the end of the clamping, the end of the earring 9 I connected to the rod is made with two symmetrically arranged pads at different heights

; The stem of the drive link 2 is made; in the form of an ear and provided with a stop 13. An inter-fsy stop 13 and an earring pad on the side of the rack 3 provides a gap S. The turning of the stud 9 counterclockwise is not possible, because there is no gap on the left side. The distance L (fig. 3) between axes 4 and 10, 10 and P should be the same. The swing angle of the rocker arm 5 clockwise is also limited by the stop 14 of the post 3 (Fig. 3), counterclockwise - determined by the stroke of the drive link. On the frame 1, the fixing lever 15 is pivotally mounted with the help of axis 16. The lever 15 has a bevel A and a profile section B (FIG. 1) with which the contact roller b of the box corresponds. 5. The profile section B is made with a radius equal to the radius described by the roller. 6 around axis 4.

On the fixing lever 15 movably mounted stop 17 (Fig 1 and 4). The compression spring 18, interacting with the support 17, always tends to press it to the right. The limit position of the stop I7-is limited by the pin 19, which interacts with the groove 20 (Fig. 3). The locking lever 15 returns to its original position with the help of the spring 21 until the axis 22 stops against the base 1. In those cases when the dimensions of the items assembled for welding do not change (for example, car body parts) and have complicated base surfaces that swing the lever can be made with a fixed stop 17 (figure 4).

Lever bolt assembly for welding works as follows.

In the initial position, the mechanism occupies the position J depicted in FIG. When the pneumatic actuator rod moves upwards, the shackle 9 moves with it, which rotates the rocker arm 5 through the pressure lever 8. When the rocker arm 5 rotates, the latter, through the contact roller 6, first interacts with the bevel A, as a result of which the locking lever 15 rotates. 17 begins to interact with the side surface of the clamped. 23 (figure 2).

The compression spring 18 begins to compress, thereby pressing the product 23, with the force developed by the pneumatic actuator rod. 2, is spent only on clamping the article on the side surface.

In the position shown in Fig. 2, the roller 6 enters the profile section B. At this moment, the force acting from the locking lever 15 on the contact roller 6 passes through the axis 4 of rotation of the rocker arm 5 and closes at the post 3 fixed rigidly on the base 1. Thus, from this moment on, the pneumatic drive rod (drive element) is unloaded from the force of the side clamp. The clamping force of the product 23 in the lateral direction is determined by the force of the spring 18 and remains constant until the end of the action. Upon further movement of the pneumatic actuator stem, all the force developed by the pneumatic actuator rod, with the exception of friction losses in the hinges, is transmitted to the pressure lever 8, which produces the clamping of the product 23 from above (Fig. 3).

When assembling components with a complicated configuration for welding (Fig. 4), a clamp occurs in a sequence, an opal link, a clamping lever, a rocker arm pivotally connected to the base and a clamping lever, an emphasis for the product and a link that pivotally connect the clamping lever to the drive link, characterized in that in order to expand technological capabilities and increase reliability

sled above. In this case, the locking ryp by increasing the clamping force without the chag 15 bases (orients) the drive's increased power, the yoke on two surfaces, and the lever 8 is made in the form of a double-lever lever-clamp on top. The pull-out force with a contact roller, on the basis of the clamping lever 8, which is transmitted to the pivot, is pivotally mounted and the podprya- lock lever 15, also locks the retaining link, the clamping lever, the yoke, which is pivotally connected to the base and the clamping lever, the product and the shackle that pivotally connect the pressure lever with the driving link, characterized in that, in order to expand technological capabilities and increase reliability

the axis 4 is transmitted to the base 1 and is not transmitted to the drive link rod.

Claims (1)

Such a design of the proposed lever clamp for assembly for welding improves the reliability of the clamping of parts at a lower power of the pneumatic actuator. Formula invented and Lever clamp for assembly under welding containing base, drive 25 on. with bevel and profile section for the contact roller of the rocker arm, the product stop is mounted on the locking lever and is spring-loaded relative to it, while the drive link is made with the stop for the earring, and; the axes of the hinged connections of the earring with the pressure lever and the drive link are located along the drive. Z / ezo fa 8 9iiZ.3 ig.