CZ8672U1 - Hand-held pneumatic extractor - Google Patents

Description

The technical solution relates to a manual pneumatic ejector, which is intended as an auxiliary device for dismantling joints made primarily by nails and screws, industrial buckles ev. other fasteners.

BACKGROUND OF THE INVENTION

If the disassembled material needs to be damaged as little as possible during dismantling, the nail and similar joints are most often disassembled by pulling the nail or other fastener out of the fasteners by a pair of pliers or a crowbar or a metal saw in the joints between the fasteners cut.

The disadvantage of the dismantling methods used so far is, on the one hand, physical effort and, on the other hand, time-consuming work, and the result of the work, especially when the fasteners are cut, is not very desirable.

The essence of the technical solution

The drawbacks of the prior art are largely solved and eliminated by a manual pneumatic ejector according to the invention consisting of a body of the apparatus and a punching mechanism, characterized in that a ejector body is positioned to the lower lid of the apparatus by means of at least one insert. an adapter with a second adapter, wherein a stroke limiter is displaceably disposed over the groove formed in the ejector body in the first adapter. The second adapter is adjustably screwed into the first adapter and the screw connection is secured by a nut. The adapter system is spring-loaded.

Using a hand-held pneumatic punch, objects assembled with fasteners, such as, for example, can be quickly and easily removed. nail. The fastener is not pulled out of the materials to be bonded, but is always driven deep enough to release the upper of the bonded materials. The design of the manual automatic ejector allows the use of the ejector for different thicknesses of the upper material.

Overview of the drawings

The technical solution is explained in more detail with the help of the attached drawings, where Fig. 1 shows a manual automatic ejector as a whole and Fig. 2 shows a schematic representation of the construction of the ejector mechanism itself.

Exemplary embodiment

The hand-held pneumatic ejector (FIG. 2) according to the invention consists of the body of the apparatus 10, which may be e.g. standard manual pneumatic nailer or stapler, and from its own punching mechanism. A ejector body 3 is mounted to the lower lid J of the apparatus 10 by means of inserts 2. Inside the ejector body 3, a first adapter 5 slides with a second adapter 7 sliding therethrough. The stroke of the adapter assembly 5, 7 is always constant, given by the length of the groove 9 in the ejector body 3 and determines the maximum thickness of the material through which the fastener can be pierced. A stroke limiter 4 is screwed into the first adapter 5 via a groove 9 in the body of the ejector 3, which also serves as a locking element. The first adapter 5 is threadedly connected to the second adapter 7 so that the second adapter 7 is screwed into the first adapter 5. To avoid changing the position of the first adapter during operation

With the second adapter 7 to each other, the screw connection is secured by the nut 6. By unscrewing the second adapter 7 from the first adapter 5, the ejector is adjusted for materials of smaller thickness and vice versa. The assembly of adapters 5, 7 and nut 6 is selected such that even at maximum screwing, i.e. the smallest overall length and maximum extension from the ejector body 3, it also functions as a safety cover for the working firing pin.

The manual pneumatic punch according to the technical solution allows two ways of use:

When repairing the transport euro pallet, it is necessary to loosen the damaged blank. First, by screwing, adjust the adapter assembly 5, 7 so that when the spring 8 is pressed down to the stroke limiter 4, the firing pin during its working stroke from the second adapter 2 protrudes by a length equal to the blank thickness.

The device thus prepared is placed by the second adapter 7 on the connecting element, e.g. lean the nail that fixes the cut to the pallet on the punch to overcome the pressure of the spring 8 to push the adapter assembly 5, 7 down to the stroke limiter 4. Press the trigger H of the machine 10 with your finger to start the duty cycle. The standard piston with the firing pin moves to the bottom dead center and pierces the nail head through the billet into the billet or into the billet. When the trigger 10 of the device 10 is released, the reverse movement occurs and the spring 8 returns the adapter assembly 5, 7 to the home position when the ejector is moved away from the upper material. This is the procedure for all nails that attach the damaged blank.

We have a loose cut because the logs in the pallet have been broken for damage. In the blank, however, nails remained punched up to their heads, but on the other side of the blank, their stems protrude. Pulling the nail out in the normal way is difficult due to poor head availability.

First, by screwing, set the adapter 5, 7 so that when the spring 8 is free up to the stroke limiter 4 the firing pin does not protrude from the second adapter 7 during its working cycle, but that the firing pin face is at most flush with the second adapter 7.

The device prepared in this way is placed by the second adapter 7 on the blank so that the second adapter 7 is pushed onto the protruding nail and the second adapter 7 with its face is supported on the blank. If the nail is bent, the second adapter 7 can be slid onto it and then straightened by sliding the punch. The pressure of the spring 8 is no longer overloaded and the trigger 11 of the device 10 is pressed straight away. The standard piston with the firing pin performs a working stroke and the fastener moves to the other side of the blank. After releasing the trigger Π. of the device 10 a reverse movement occurs.

Claims (3)

A hand-held pneumatic ejector comprising a body of a device and a punching mechanism, characterized in that it is at least one to the lower lid (1) of the device (10) by means of at least one 35, a ejector body (3) is provided in which a first adapter (5) is slidably mounted with a second adapter (7) adjoining the first adapter (5) over a groove (9) formed in the ejector body (3) adjustable stroke limiter (4). A manual pneumatic ejector according to claim 1, characterized in that the second adapter (7) is displaceably arranged in the first adapter (5) by a screw connection, The 40 screw connection is secured by the nut (6). Hand-operated pneumatic ejector according to claim 1, characterized in that the set of adapters (5, 7) is spring-loaded (8).