KR200453500Y1

KR200453500Y1 - A spring nut manufacturing device equipped with a nut checker

Info

Publication number: KR200453500Y1
Application number: KR2020100012026U
Authority: KR
Inventors: 주인회
Original assignee: 주인회
Priority date: 2010-11-22
Filing date: 2010-11-22
Publication date: 2011-05-09

Abstract

The present invention relates to a device for manufacturing a spring nut, and a device for manufacturing a spring nut provided with a nut inspecting device according to the present invention includes a material supply device for continuously supplying a material along a rail, And a nut inspecting device for detecting the presence or absence of a nut portion formed through the tapping device.

Description

[0001] The present invention relates to an apparatus for manufacturing a spring nut,

The present invention relates to a spring nut manufacturing apparatus, and more particularly, to a spring nut manufacturing apparatus provided with a nut inspecting apparatus capable of automatically checking whether a nut is defective in the process of manufacturing a spring nut.

In general, a spring nut or a spring nut is used when a variety of members are installed in a metal or plastic panel assembling structure such as an automobile, the assembly is also inserted into the side portion of the water, and then the bolt, It is a fastening means widely used as a substitute for a hexagon nut to be fastened to a female thread.

The spring nut is fixed in an elastic state when the metal plate is bent and inserted into the side surface of the panel. The spring nut is fastened and fixed by the fitting hole of the spring nut and the through hole of the assembly structure, Or to prevent damage to structures such as plastics or the like which are easily damaged by the thread.

1 is a view showing the use of a conventional spring nut.

As shown in Fig. 1, a through hole 4 is formed in the assembled structure 2, and a seating groove 6 into which a spring nut is to be inserted is formed.

The insertion portion 16 is seated in the seating groove 6 by using the inclined tongue 18 of the spring nut 10 in the seating groove 6 so that the through hole 6 of the assembly structure 2, And the fitting hole 12 of the spring nut 10 are made to coincide with each other.

(8) (bolt or screw) is inserted through the fitting hole (12) of the spring nut (10) and passes through the through hole (6) of the assembly structure (2) ).

Such a spring nut is generally manufactured through a continuous forging process, a bending process, and a tapping process. In the tapping process, when the tab tool is worn out or the diameter of the hole causes the screw tab to be damaged Or when the diameter of the through-hole exceeds an error in the forging process, a defect occurs.

In order to select such a defective product, a complete inspection is carried out with naked eyes, and thus, a manufacturing cost is increased and a defective product may be mixed.

The object of the present invention is to provide a manufacturing apparatus for a spring nut provided with a nut inspecting device capable of automatically checking whether or not a nut is defective.

A spring nut manufacturing apparatus equipped with a nut inspecting apparatus according to the present invention comprises a material supply unit for continuously supplying a material along a rail, a tapping unit for forming a nut part by using a rolling taps in a material continuously supplied along the rail, And a nut inspecting device for detecting whether or not the nut portion formed through the tapping device is normal,
The nut inspecting device includes a support rod installed adjacent to a rail on which the material passed through the tapping device is moved, a movable member vertically movably coupled to a through hole of a guide plate installed on the support rod, A pneumatic cylinder connected to the connecting plate provided on the lower side of the gauge unit and vertically lifting the gauge unit, and a pneumatic cylinder coupled between the guide plate and the connecting plate, A coil spring elastically supported in a vertically downward direction, and a limit switch operated through a stone plate formed on the gage portion.

The apparatus for manufacturing a spring nut equipped with the nut inspecting apparatus according to the present invention has an advantage in that it can check whether or not the nut is normally formed automatically through the nut inspecting apparatus, so that the manufacturing cost can be reduced and the defective product can be prevented from being mixed .

1 is a view showing the use of a conventional spring nut.
Fig. 2 is a manufacturing process diagram of a spring nut. Fig.
3 is a perspective view of a spring nut manufacturing apparatus equipped with a nut inspecting apparatus according to an embodiment of the present invention.
FIG. 4 is a side view of a nut inspecting apparatus according to a preferred embodiment of the present invention; FIG.
FIGS. 5A, 5B and 5C are operational views of a nut inspecting apparatus according to a preferred embodiment of the present invention; FIG.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a manufacturing process diagram of a spring nut.

As shown in FIG. 2, a manufacturing process of the spring nut will be described with reference to FIG. 2 (a). The diameter R1 of the through-hole formed in the top plate is generally larger than the diameter of the through-hole R2 of the top plate forming the nut.

Next, the upper plate 11 and the lower plate 12 are folded in the form of a fold plate by the bending process shown in FIG. 2 (b), and the projections 13 are formed in the lower through holes through the punching process.

Next, the nut portion 14 shown in FIG. 2 (d) is formed on the inner surface of the protrusion 13 by a tapping process using the tap tool 2 shown in FIG. 2 (c) .

In this process, when the tapping process is performed using the tapping tool, the inner diameter R3 of the mountain of the nut portion is smaller than the inner diameter R2 of the protrusion shown in FIG. 2 (b).

Using this point, the nut inspectors used in the present invention check whether the nuts are formed through plug gauges that are larger than the inside diameter (R3) of the nuts and smaller than the bore diameter (R5).

FIG. 3 is a perspective view of a spring nut manufacturing apparatus provided with a nut inspecting apparatus according to an embodiment of the present invention. FIG. 3 is a perspective view of a spring nut manufacturing apparatus provided with a nut inspecting apparatus according to the present invention.

3, the apparatus for manufacturing a spring nut equipped with the nut inspecting apparatus according to the present invention includes a material supply unit 100 for continuously supplying a material along a rail 102, a material supplying unit 100 for continuously supplying the material along the rail, And a nut inspecting device 400 for detecting the presence or absence of a nut portion formed through the tapping device 300. The nut inspecting device 400 includes a nut inserter 400,

The conventional apparatus for manufacturing a spring nut includes a material supplier 100, a forming unit 200, and a tapping unit 300. In the present invention, a nut inspecting apparatus 400 is additionally provided.

In addition, the conventional tapping machine 300 shapes the nut portion using the cutting tab, but in the present invention, the tapping process is performed using the rolling tab.

Therefore, the diameter of the through-hole of the lower plate must be different in size from the process using the conventional cutting tab on the premise of this point (generally, the diameter must be made larger).

Except for this point, since it is similar to the conventional apparatus for manufacturing a spring nut, a description of the material supply unit 100, the forming unit 200, and the tapping unit 300 for supplying the material using hydraulic pressure or pneumatic pressure is omitted do.

Let's take a closer look at the nut checker, a key part of this design.

4 is a side view of a nut inspecting apparatus according to a preferred embodiment of the present invention.

As shown in FIG. 4, the nut inspecting apparatus is installed adjacent to the rail 102 on which the material passed through the tapping machine 300 is moved.

A gage portion 420 having a plug gage 422 inserted into a nut portion of a work to be moved along the rail 102 is installed at a lower end portion of the gage portion 420, And is vertically movably coupled to the through hole of the guide plate 412 provided on the support table 410.

A pneumatic cylinder 430 connected to the connection plate 424 provided on the lower side of the gage portion 420 and vertically lifting the gage portion 420 is provided adjacent to the gage portion 420.

Between the guide plate 412 and the connecting plate 424, a coil spring 440 for elastically supporting the gauge unit 420 in a vertically downward direction is coupled.

Finally, a limit switch 412, which is actuated through a projection 426 formed on the gage 420, is installed on the support 410.

Looking at the details of the operating mode of such a nut checker,

FIGS. 5A, 5B and 5C are operational views of a nut inspecting apparatus according to a preferred embodiment of the present invention.

The state shown in FIG. 5A is a preparation step for completing the inspection of the front material 20a among the materials moved along the rail 102 and inspecting the next material 20b.

In this state, the gage portion 420 is raised by the pneumatic cylinder 430, and the coil spring 440 is compressed between the connecting plate 424 and the guide plate 412.

5B, when the pressure of the pneumatic cylinder is removed in the state shown in FIG. 5A, the elastic force of the coil spring 440 and the self-load cause the gage portion 420 to descend vertically downward , And the diameter R4 of the plug gauge is smaller than the diameter R3 of the mountain of the nut portion as in the enlarged portion shown in Fig.

Therefore, the material 20b whose inspection has been completed by the material supplier advances forward, and the pneumatic cylinder 430 raises the gage portion 420 to inspect the next material 20c.

However, as shown in FIG. 5C, when the diameter R3 of the nut is processed to be smaller than the diameter R4 of the plug gauge due to a large through hole or an abnormality of the rolling taps, the gage portion 420 is set So that the stone plate 426 operates the limit switch 450. As a result,

The limit switch 450 transmits an abnormality signal to inform the operator of the occurrence of a defective product or to send a signal to the control unit to stop the entire manufacturing apparatus.

As described above, the present invention regards providing a spring nut manufacturing apparatus provided with a nut inspecting apparatus as a main technical idea, and since the above-described embodiments are only one embodiment with reference to the drawings, Shall be determined by the scope of the new registration.

100: Material feeder
102: rail
200:
300: tapping machine
400: Nut Inspector
410: Support
412: guide plate
420: Gage Branch
422: Plug gauge
424: connection plate
426: stone publication
430: Pneumatic cylinder
440: coil spring
450: Limit switch

Claims

In a spring nut manufacturing apparatus,
A material feeder (100) for continuously feeding the material (102) along the rails;
A tapping machine 300 for forming a nut portion by using a rolling tab on a material continuously fed along the rail;
And a nut inspecting device (400) for detecting whether or not the nut portion formed through the tapping device is normal,
The nut inspecting device (400)
A support table 410 installed adjacent to a rail through which the material passed through the tapping device is moved;
A gage unit 420 coupled to the through hole of the guide plate installed on the support plate so as to be vertically movable and having a plug gauge inserted into a nut portion of the workpiece moved along the rail at a lower end thereof;
A pneumatic cylinder 430 connected to the connection plate provided at the lower side of the gauge unit and vertically lifting the gauge unit;
A coil spring (440) coupled between the guide plate and the connecting plate to elastically support the gauge unit in a vertically downward direction;
And a limit switch (450) operated through a stone plate formed on the gage portion.

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