JPH06238528A - Multi-row feeding device for nut - Google Patents

Abstract

PURPOSE:To provide a multi-row feeding device of nuts simple and capable of efficiently distributing and feeding a large number of the nuts continuously supplied to a large number of nut installation device such as a pierce nut assembly device and a nut welding machine. CONSTITUTION:On a main body 11 provided with a guide passage 14 to which a large number of nuts N are continuously supplied in a serial state and a plural number of distribution passages 15 extending in the direction orthogonal with the guide passage 14, a plural number of reciprocally movable pushers 16 to enter the distribution passages 15 by way of crossing the guide passage 14 and to feed the nuts N from the guide passage 14 to the distribution passages 15 and a drive means (air cylinder) 17 to reciprocally move the pushers 16 are provided. In the meantime, to the distribution passages 15, feeding chutes 13 are individually an respectively connected. The feeding chutes 13 are fixed on connecting metal fittings 12 separately from the main body 11 with specified intervals between each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut suitable for distributing and feeding a large number of continuously supplied nuts to a plurality of nut mounting devices such as a nut welder or a pierce nut assembly device 6. Relates to a multi-row feeder.

[0002]

2. Description of the Related Art Sheet metal products represented by automobiles are provided with a large number of welding nuts and pierce nuts (the end faces of the nuts function as punches to punch metal surfaces and at the same time, to fix the metal plates). Often installed. In order to automate the work of attaching these nuts, an automatic nut feeder by a vibration parts feeder is usually adopted.

[0003]

However, in the case of the nut welding machine, the working speed per welding machine is only a fraction of a few to a few tenths as compared with the feeding capacity of one feeder. , The automatic nut feeder is not fully utilized.

On the other hand, pierce nuts (hereinafter simply referred to as nuts) that are most often used in sheet metal products such as automobile bodies often have many nuts attached to one work piece at a time, and most of them are nuts. Simultaneously with the installation of, the parts are punched, punched, edge cut, or partially drawn. For this reason, a plurality of pierce nut assembling devices are often used together with other press dies in a press machine. In order to supply a nut to such a pierce nut assembly device, it is necessary to avoid the punches of other press dies and to feed the nut,
Usually, the nuts are fed from the feeder installed near the press machine to the pierce nut assembly device via the flexible chute hose. However, when a large number of pierce nut assembling devices are installed in the press die, a large number of chute hoses are arranged in the die, and a nut feeding device including a feeder for supplying a nut to each chute hose is used as a press machine. It was necessary to arrange a large number of units in the vicinity of.
As a result, the complexity of the work such as die replacement, maintenance / inspection, loading / unloading of workpieces, and attachment / detachment of press dies and multiple chute hoses increases, and it also hinders the operation and passage of workers. There was a problem of coming. In addition, in recent years
A large-sized press machine employs an automatic die changer and requires a space for installing the automatic die changer, so that the installation space of the nut feeding device is restricted. Furthermore, it is very difficult to automate the attachment / detachment work between the press die and a large number of chute hoses, which has been considered practically impossible.

Since the present invention has been made in view of the above circumstances, it is possible to solve all the problems faced by the nut feeding means in the above-mentioned pierce nut assembling apparatus all at once, and in addition to the nut welding machine, etc. An object of the present invention is to provide a multi-row feeding device for nuts that can be effectively used for feeding nuts.

[0006]

In order to achieve the above object, a multi-row feeding device for nuts according to the present invention is provided with a guide passage through which a large number of nuts are continuously fed in series, and the guide passage. A plurality of reciprocating movable units that cross the guide passage and enter the distribution passage, and feed the nut from the guide passage to the distribution passage in a main body having a plurality of distribution passages extending in a direction orthogonal to the distribution passage. And a drive means for reciprocating the pusher are provided, while a feed chute is individually connected to the distribution passage.

The pusher is configured to operate in conjunction with a nut attachment device (pierce nut assembly device, nut welder, etc.) for feeding the nut.

Further, it is preferable that a cutout portion is provided below the pusher so as to form a passage that allows the nut to be supplied to the guide passage when the pusher enters the distribution passage.

Further, if the pushers are constructed so as to be operated individually so that a desired pusher can be stopped, it is very convenient for use and handling.

[0010]

With the above construction, the nuts continuously supplied in series to the guide passage are sequentially pushed out to the respective distribution passages by the forward and backward movement of the pusher, and distributed and fed through the feeding chute.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example in which the multi-row nut feeder according to the present invention is used for feeding pierce nuts. The nut multi-row feeding device 10 is a pierce nut assembling device 7 described later.
The pierce nuts, which are attached to the press machine 1 in which is installed and whose direction is selected by the nut feeder 2 arranged in the vicinity of the press machine 1, are continuously supplied to the multi-row nut feeder 10 through the flexible chute hose 3. .
In the middle of the chute hose 3, a push-up device 4 by compressed air is used.
The pierce nut is pushed up by the push-up device 4 to the nip portion 5 located at a position higher than the mounting position of the nut multi-row feeding device 10, and from the top portion 5, the nut multi-row feeding is performed by its own weight due to the drop. It is adapted to be supplied to the feeding device 10. The drop passage 3a of the chute hose 3 is provided with sensors S1 and S2 for confirming the existence of pierce nuts. It is continuously supplied to the feeding device 10.

As shown in FIG. 2, the pierce nut assembling apparatus 7 includes a lower die 8 fixed to the bolster 1a of the press machine 1 and an upper die 9 removably attached to the ram 1b, and another punch (not shown). ， Incorporated with dice etc. Although only one machine is shown in the drawing, it is often the case that a single press machine 1 incorporates several to a dozen or more pierce nut assembling devices 7. Since the pierce nut assembling device 7 itself is not directly related to the present invention, a detailed description thereof will be omitted, but the end face of the nut supplied through the distribution feeding chute 13 described later functions as a punching punch, and the nut itself is caulking die. At the same time as punching out the metal plate placed on top,
It is fixed to the metal plate.

The multi-row nut feeder 10 is attached to the ram 1b and the upper die 9 of the press machine 1 in the illustrated embodiment,
The details are shown in FIGS. Below, FIG.
It will be described with reference to FIGS.

The multi-row nut feeder 10 has a unit body 11 connected to a chute hose 3 for continuously supplying a large number of pierce nuts (hereinafter simply referred to as nuts) N.
And a plurality of feeding chutes 13 connected to the main body 11
And a joint metal fitting 12 for holding and fixing them at predetermined intervals. The unit main body 11 and the joint fitting 12 may be integrally joined, but in the illustrated embodiment, for convenience of removing the upper mold 9 from the ram 1b of the press machine 1 and automatically exchanging them, as will be described later, both of them are combined. Separated. The main body 11 is provided with a guide passage 14 to which a large number of nuts N are continuously supplied in series, and a plurality of distribution roads 15 in a direction orthogonal to the guide passage 14. The feeding chute 13 is individually connected and connected to. Further, a pusher 16 that pushes out the nut N is provided along each distribution passage 15. Each pusher 16
Is connected to a piston rod 18 of an air cylinder 17 fixed to the main body 11 via a pin 19, and
The spring 20 wound around the pin 19 uses the pin 19 as a fulcrum to move the tip 1
6a is urged to push down the guide passage 14
And enter the distribution passage 15 across the guide passage 1
4 is retracted to the outside (see FIGS. 5 and 6).
reference). The pusher 16 operates in conjunction with the pierce nut assembly device 7. Further, a cutout portion 21 is provided on the lower side of each pusher 16 to form a passage for allowing the supply of the nut N in the guide passage 14 when the pusher 16 enters the distribution passage 15.

The unit main body 11 of the nut multi-row feeding device 10 configured as described above is attached to the ram 1b via the bracket 31 as shown in FIG. On the other hand, the joint fitting 12 is attached to a swing arm 34 that is swingably provided on a bracket 32 fixed to the upper die 9 via a pivot shaft 33. The swing arm 34 is operated by an air cylinder 35 from a horizontal state to an inclined state with the pivot shaft 33 as a fulcrum. This is to prevent the nut N from falling off from the inlet 13a of the feeding chute 13 held by the joint fitting 12 when the upper die 9 is separated from the ram 1b and automatically replaced as shown in FIG. It is provided in order to incline the joint fitting 12 so as to face upward. In order to reliably prevent the nut N from falling off, as illustrated in FIG. 7, the upper portion of the joint fitting 12 is engaged with the screw hole 22 of the nut N located at the inlet 13 a of each feeding chute 13. It is desirable to provide a hook 36 for preventing the falling off. The latch claw 36 is attached to a bracket 37 fixed to the joint fitting 12 via a pin 38, and is urged by a spring 39 wound around the pin 38 so as to push down the tip thereof.

Then, as shown in FIG. 2, after the upper die 9 is attached and fixed to the ram 1b, the swing arm 34 is operated and the joint fitting 12 is returned to the horizontal state.
The inlet 13a of No. 3 coincides with the distribution passage 15 of the chute body 11, and the communication connection state is established. In this state, every time the pierce nut assembling device 7 operates once, the air cylinder 17 operates in response to this, and the pusher 16 is moved back and forth by one reciprocation. Then, when the pusher 16 moves forward, the nut N located in the guide passage 14 is pushed out into the distribution passage 15 by the tip end head portion 16a thereof and is fed into the feeding chute 13 through the inlet 13a. At this time, since the notch 21 is provided below the pusher 16, the nut N supplied to the guide passage 14 can be continuously supplied without being blocked by the pusher 16, and the chute hose 3 Through this, it is possible to minimize the waiting time loss of the nut N supplied to the guide passage 14. On the other hand, when the pusher 16 moves backward, as shown by the phantom line in FIG.
The tip head portion 16a rides on the upper surface of the nut N waiting in the guide passage 14 and moves backward, and is pushed down by the action of the spring 20 at the rear standby position as shown in FIG. 16a is located in the vicinity of the rear side surface of the nut N to be delivered next.

When some of the plurality of pierce nut assembling devices 7 incorporated in the press machine 1 are stopped, only the corresponding pushers 16 stop operating and the remaining pushers 16 operate. The nut N can be sequentially supplied.

In the illustrated example, the unit body 11 and the joint fitting 12 are arranged horizontally, but they may be arranged vertically depending on the mounting space.

In the above-mentioned embodiments, the nuts N are distributed and fed to the plurality of pierce nut assembling devices 7, but the multi-row nut feeding device of the present invention comprises one feeder and a plurality of feeders. It can also be used when distributing and feeding nuts to a nut welder.

[0021]

As described above, according to the nut multi-row feeder of the present invention, the nuts are efficiently distributed from one feeder to many pierce nut assembling devices and nut attaching devices such as nut welding machines. It can be delivered.
Moreover, since the device is simple and can be manufactured at low cost, the economic effect of the entire nut feeding facility is extremely large.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of use of a nut multi-row feeding device according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the same main part.

FIG. 3 is an enlarged cross-sectional view showing another state of the main part.

FIG. 4 is a plan view of a nut multi-row feeding device.

5 is a sectional view taken along line 5-5 of FIG.

FIG. 6 is a partial cross-sectional view showing a pusher in a standby state in a drawing similar to FIG. 5;

FIG. 7 is a cross-sectional view of a main part of a joint fitting.

[Explanation of symbols]

 10 Multi-row feeder for nuts 11 Main body 12 Joint fitting 13 Feed chute 14 Guide passage 15 Distribution passage 16 Pusher 17 Air cylinder

Claims (5)

[Claims] 1. A main body provided with a guide passage through which a large number of nuts are continuously supplied in series and a plurality of distribution passages extending in a direction orthogonal to the guide passage, and the main body having the guide passage across the guide passage. A plurality of reciprocating pushers for entering the distribution passage and feeding the nut from the guide passage to the distribution passage, and a drive means for reciprocating the pusher are provided, while the distribution passage is individually provided. A multi-row feeding device for nuts, wherein a feeding chute is connected to the feeding chute. 2. The multi-row feeding device for nuts according to claim 1, wherein the pusher is configured to operate in conjunction with a nut mounting device that feeds the nuts. 3. A cutout portion is provided below the pusher so as to form a passage that allows the nut to be supplied to the guide passage when the pusher enters the distribution passage. Item 3. A multi-row feeding device for nuts according to item 1 or 2. 4. The feeding chute is fixed to a joint fitting separate from the main body at a predetermined interval, and is individually connected to the distribution passage through the joint fitting. A multi-row feeding device for nuts according to claim 1, 2, or 3. 5. A multi-row feed of nuts according to any one of claims 1 to 4, wherein the pushers are arranged to be operated individually, so that the desired pushers can be deactivated. apparatus.