JPH04304974A - Plastic nut fixture - Google Patents

Abstract

PURPOSE: To provide a device having excellent durability and capable of accurately carrying a nut for pushing by arranging a magazine to be filled with nut in parallel with a moving tool inside of a housing with a space, and providing a carrying means for inserting the nut into the moving tool. CONSTITUTION: A device main body is formed into a gun-shape, and has a housing 2 and a handle 12. A trigger button 36 is provided in front of the handle 12. Furthermore, a moving tool formed of a positioning piston 5 or the like is provided in an upper part of the housing 2. The positioning piston 5 is moved in the axial direction inside of a hollow cylindrical guide 45 by an impact piston 4 using the pressurized air as a driving source, and a plastic nut inserted into a receiver opening by a carrying lever 7 is fed to an opening end of a mouth piece 13. On the other hand, a magazine 16 extrudes the plastic nut to the outlet end formed with a claw-like tongue 17 while receiving the pressure of a spring 21 with the piston 19 inside of the magazine 16.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention relates to a device for attaching a plastic nut inside a magazine to a holding pin attached to a workpiece. and a housing configured to continuously move the plastic nuts into the insertion position and press them against the pin.

0002

BACKGROUND OF THE INVENTION Such a mounting device includes cables,
It is used to attach parts such as cable holders, plates, and nuts to the base. for example,
When manufacturing automobiles, wires and electrical connectors attached to the car's battery and other parts need to be secured inside metal sheets, and decorative strips and other items require equipment to securely attach them to the body. shall be.

Mounting devices are known in which the part to be mounted, in particular a plastic nut, is pressed by pressurized air from a magazine, and the air pressure leading to the driving area forces the part onto a metal pin mounted in the desired position on the base. It is a publicly known thing. However, these known devices are fragile and prone to wasted time. For example, if the part to be installed is tilted in the supply line from the magazine to the installation device, it is difficult to remove and it takes a long time before it can be used again.

0004

OBJECTS OF THE INVENTION It is therefore an object of the invention to eliminate the above-mentioned disadvantages and provide a reliable transport of plastic nuts from the magazine to the insertion area without being fragile and without the use of technically complex measures. The object of the present invention is to provide a plastic nut mounting device which presses the plastic nut onto a partially threaded pin in the insertion area.

[0005]

Summary of the Invention The device according to the invention is a device for attaching a plastic nut inside a magazine to a holding pin attached to a workpiece, the housing having a device arranged therein that can be actuated with pressurized air. further comprising: an apparatus for successively moving plastic nuts into driving positions and pressing them against the pin;
A magazine in the form of an elongated hollow body is arranged parallel to and at a distance from the axis (A) of the moving device inside said housing, one at a time from said magazine.
The present invention is characterized in that it comprises conveying means for taking out a single nut and inserting the nut into a receiving opening in the cylindrical moving device.

Preferably, the conveying means comprises a pivotable lever which is fixed at one end to an axially movable slide tube within the housing; having at its free end receiving means for a plastic nut removed from said magazine, said pivotable lever being pivotably and axially movable between two positions via a rotating piston; The two positions are a nut receiving position and a position in which the lever conveys the plastic nut to the transfer device.

[0007] In a preferred embodiment, a claw-like tongue is provided at the outlet end of said magazine, said tongue retaining successive rows of nuts inside said magazine during each operating cycle. At the same time, only one of the plastic nuts is removed, which is pressed towards the outlet end by the spring-loaded piston. The free end of the pivoting lever may be provided with a cone, the pivoting lever engaging at its front end with an opening in the magazine to spread out the tongues.

By assembling the magazine inside the housing of the device using an axially movable and pivotable conveying means, the overall structure of the mounting device can be made compact and the mounting device can be operated reliably. can be done. That is, only one plastic nut is removed from the magazine in each working cycle,
It is carried to a transfer device, which transfers the plastic nut to the driving area and then presses or screws it into a threaded pin or the like. Preferably, the housing is in the form of a gun that can be manually guided and actuated.

For a better understanding of the invention, preferred embodiments will now be described with reference to the drawings.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a plastic nut installation device according to the present invention is in the form of a compact gun and has a housing 2 and a handle 12. A trigger button 36 is provided at the front of the handle 12 for starting the operation of the attachment device. A moving device consisting of a positioning piston 5 is arranged in the upper part of the housing 2. This positioning piston 5 is moved axially inside a hollow cylindrical guide 45 by an impact piston 4 driven by pressurized air. This positioning piston 5 axially moves the plastic nut inserted into the receiving opening by means of the transport lever 7 and delivers it to the driving region located at the open end of the mouthpiece 13 fixed to the housing 2 .

FIG. 2 shows the magazine 16. As shown in FIG. Magazine 16
is an elongated hollow body, inside which plastic nuts are arranged in rows. Piston 18 is spring 2
Push the plastic nut towards the exit end under pressure of 1. The outlet end, on which the claw-like tongs 17 are formed, is made flexible and expandable so that each plastic nut can be removed from the magazine 16 one by one.

For this purpose, the transport lever 7 has a slide tube 2 which is axially movable inside the housing 3.
6 and is pivotally connected. A rotary piston 11 is rotatably mounted inside the housing 3, and the rotary piston 11 pivots the transport lever 7 between two positions shown in FIG. In FIG. 4, the transport lever 7 is shown by a solid line, and the position of this solid line is
This corresponds to the position of the transport lever 7 shown in FIG. In this position, the transport lever 7 transports the plastic nut. This plastic nut is taken out of the magazine 16 by means of the transport lever 7, carried from there to the moving device as the positioning piston 5, and is then press-fitted into the receiving opening of the positioning piston 5. In the position indicated by the broken line in FIG. 4, the transport lever 7 with its free end is aligned with the outlet end of the magazine 16 and
Make it possible to remove the plastic nut from 6. In particular, as shown in FIGS. 2 and 1, the transport lever 7 is provided with a conical section 8 at its free end;
This allows the tongues 17 of the magazine 16 to spread out when they come into contact with the conical part 8, so that each plastic nut can be removed by means of the transport lever 7.

As shown in FIG. 5, the transport lever 7 is attached to the slide tube 26 with a countersunk screw 28. The tubular body 27 guides the slide tube 26 during its axial movement.

Magazine 16 can be removed from housing 2 for nut filling. For this purpose, a removable lid 14 is provided at the rear of the mounting device.

A coupling 10 is provided in the housing 3, and this coupling 10 allows the transport lever 7 to be
is capable of both pivoting and axial movement, as shown in FIGS. 6 and 7. In position X1 in FIG. 6, the transport lever 7 is located with its free end in front of the delivery opening of the magazine 16. The plastic nut is taken out of the magazine 16 and pushed into the transport lever 7. Next, as shown at position X2, the transport lever 7 is pushed outward in the axial direction. The free end of the transport lever 7 grips the plastic nut taken out from the magazine 16, while the tongs 17 hold the next plastic nut inside the magazine 16.

In position X3 shown in FIG. 7, the transport lever 7 has pivoted to this position X3 and is located in front of the positioning cylinder 5. The transport lever 7 is then moved axially towards the positioning cylinder 5 and the plastic nut is pressed into the receiving opening of the positioning cylinder 5 (position X4).

The transport lever 7 repeats the above-described operation to take out a plastic nut from the magazine 16 and press fit it into the moving device 5. The transfer device 5 then guides the plastic nut to the driving area provided in the opening of the mouthpiece 13 in FIG. 1, in which the plastic nut is driven into a pin (not shown).

The movement of the transport lever 7 is controlled by known control means 39.
This is synchronized with the biasing of the positioning piston 5.

[Brief explanation of drawings]

FIG. 1 is a side view, partially in section, of a plastic nut attachment device according to the present invention.

FIG. 2 is a sectional view of a magazine provided in the device of FIG. 1;

3 is a front view of the device shown in FIG. 1 with the mouthpiece removed; FIG.

FIG. 4 is a partial schematic diagram showing the conveying means. The solid line position shows the plastic nut aligned with the moving device of FIG. 1, and the dashed line position shows the position of the transport means when it removes the plastic nut from the magazine.

FIG. 5 is a sectional view of the housing jig shown in FIG. 1 to show the operation of the conveyance means.

FIG. 6 is a schematic diagram showing various positions of the conveying means.

FIG. 7 is a schematic diagram showing various positions of the conveying means.

[Explanation of symbols]

2 Housing 3 Housing 4 Impact piston 5 Positioning piston 7 Conveyance lever 8 Cone part 10 Coupling 11 Rotary piston 13 Mouthpiece 14 Lid 16 Magazine 17 Claw-shaped tongs 18 Piston 21 Panel 26 Slide tube 27 Tubular body 28 Flat head screw 36 Trigger button 39 Control means 45 Guide

Claims (6)

[Claims] 1. An apparatus for attaching a plastic nut inside a magazine to a retaining pin attached to a workpiece, the apparatus comprising a housing in which a pressurized air actuatable instrument is disposed, the apparatus further comprising: is a device for continuously moving plastic nuts into the driving position and pressing them against the pin, in which a magazine (16) in the form of an elongated hollow body is connected to the axis of the moving device (5) inside said housing (2). (A) and parallel to the axis (
A) is placed at a distance from the magazine (
Plastic nut installation characterized in that it comprises conveying means (7) for removing one nut at a time from 16) and inserting the nut into a receiving opening in said transfer device having a cylindrical shape (5). Device. 2. The conveying means (7) is a pivoting member which is stopped at one end in an axially movable slide tube (26) in a housing (3) provided inside the housing (2). It comprises a pivotable lever, said lever further having at its free end receiving means (8) for a plastic nut taken out from said magazine, said pivotable lever (7) being driven by a rotating piston (11). It is pivotable and axially movable between two positions, said two positions being a nut receiving position and a position in which said lever conveys said plastic nut to said moving device (5). A plastic nut attachment device according to claim 1. 3. Claw-shaped tongs (17) are provided at the outlet end of the magazine (16), and in each working cycle, the tongs are arranged in a continuous row inside the magazine (16). Claim characterized in that it is for ejecting only one of the plastic nuts which is pressed in the direction of the outlet end by the spring-loaded piston (18) while holding the nut in the plastic nut. Item 1
Plastic nut attachment device as described in . 4. The free end of the pivot lever (7) is provided with a cone (8), the pivot lever engaging with the opening of the magazine at its front end to open the tongue (17).
2. The plastic nut attaching device according to claim 1, wherein the plastic nut attaching device is adapted to expand the plastic nut. 5. The slide tube (26) is guided by the inner wall of the housing (3) and the tubular body (27) during axial movement of the slide tube (26). Claim 1 or 2
Plastic nut attachment device as described in . 6. The movement of the pivot lever (7) and the moving device (5) are activated synchronously by a trigger (36) provided on the handle (12) of the gun-shaped housing (2). The plastic nut attaching device according to claim 1, wherein the plastic nut attaching device is a plastic nut attaching device.