JPS583775B2 - Material supply device at Natsuto Homer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a material for a nut former, in which a linear material made of metal is sequentially cut into appropriate dimensions from the tip, and the obtained pieces are pressed with a die and a punch to form a nut. This relates to a supply device.

Generally, commercially available materials have the tip and tail ends cut appropriately, and the cuts are slanted or deformed, so it is not possible to obtain a piece of the shape required for a homanut from the tip of the material, or the material Because of the length, fragments that do not reach the required size are obtained at the tail end.

Despite the fact that incomplete fragments can be obtained from the tip and tail of a single material, the material feeding device in conventional nut formers cuts the material from the tip to the tail and transfers all the resulting fragments to the die. Since the material is directly supplied, abnormal stress is applied to the dies and punches during forging, causing damage to the dies and punches.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a material supply device that can reliably prevent damage to dies, punches, etc. due to incomplete fragments by disposing of the fragments obtained from at least the locations corresponding to both ends of the material. It is something.

An embodiment of the present invention will be described below in detail with reference to the drawings.

In the material supply device 1 for the Nasoto Homa shown in the drawing, 2 is a machine body, which is provided with a die 3 and a guide hole 5 for guiding a linear material 4 made of metal forward on the front side, and has a die 3 and a guide hole 5 for guiding a linear material 4 made of metal forward. A receiving hole 6 for receiving a piece 4' of the material 4 is provided between the material 5 and the material 4.

Reference numeral 7 denotes a material feeding means, which is composed of rollers 8, 8, 8, 8, which pinch and transfer the material 4, and is provided behind the guide hole 5, and is arranged to convey the material 4 through the guide hole 5 onto the front surface of the machine body 2 in a lengthwise manner. It is configured to intermittently extrude an amount approximately corresponding to the amount.

Reference numeral 9 denotes a cutter blade, which is open in the front-rear direction and has a through hole 10 capable of receiving the tip of the material), and is disposed in front of the guide hole 5.

11 is the cutter blade swinging means, and the crank mechanism 1
2' for reciprocating the cutter blade 9 between the guide hole 5 and the receiving hole 6.

Reference numeral 12 denotes a forked chuck for elastically clamping the piece 4' of the material 4.

13 is a chuck driving means for reciprocating the chuck 12 between the receiving hole 6 and the die 3; a crank mechanism 1;
It consists of 4.

Further, the chuck 12 has a gear 15 attached to the body 2 and a gear 17 attached to the shaft 16 of the chuck 12 engaged with each other, and is configured to be reversed during movement.

Reference numeral 18 denotes a regulating rod, which is provided in the through hole 10 of the cutter blade 9 so as to be movable in the front-back direction, and is held in a neutral position by springs 19 and 20.

A fixed receiving member 21 is provided in front of the guide hole 5, and when the cutter blade 90 through hole 10 corresponds to the guide hole 5, it corresponds to the front end surface of the regulating rod 18 and prevents it from moving forward, and the protruding length is It is designed in such a way that it can regulate the

22 is a fragment pressing means, which presses the regulating rod 18 by a pressing rod 23 when the through hole 10 of the cutter blade corresponds to the receiving hole 6.
The ram 25 is integrally attached to a ram 25 supporting a punch 24 corresponding to the cutting die 3.

26 is a fragment discharge means, which is provided at the rear of the receiving hole 6;
When the chuck 12 moves to a position corresponding to the receiving hole 6, the fragment 4' in the receiving hole 6 is pushed forward by the rod 27 and press-fitted into the chuck 12.

This rod 27 has its rear end pivoted to the rear of the fuselage 2 and engages with the lower end of a swinging lever 28, and a roller 29 at the upper end of the swinging lever 28 is connected to two large and small plate cams 30, 31 to form a small plate. The cam 30 is fixed to the rotating shaft 32, and the dog plate cam 31 is fixed to the rotating shaft 32.
The dog plate cam 31 is spline-fitted to the roller 29 and transferred to the small plate cam 30 side by a hydraulic cylinder 33 so that the dog plate cam 31 and the roller 29 can come into contact with each other.

Therefore, normally the roller 29 of the swing lever 28 is connected to the small plate cam 3.
When the hydraulic cylinder 33 is actuated, the swinging lever 28 swings greatly as the roller 29 contacts the large plate cam 31. The fragment 4' in the receiving hole 6 is then allowed to pass through the chuck 12 and move forward greatly to a position where it can be discharged to the front of the chuck 12.

Reference numeral 34 denotes a tip/tail end detection means for detecting that the fragment 4' is cut at least at the tip 4a and tail end 4b of the material 4.

This detection means 34 uses a photoelectric switch 36 provided near the material feeding means 7, and based on the detection signal of the photoelectric switch 36, the number of times the cutter blade 9 cuts is determined by an activation signal of a limit switch 37 corresponding to the cutter blade 9. The hydraulic cylinder 33 is configured to operate for an appropriate time when the counter 38 counts the number set in the counter 38.

The operation of the material supply device configured as described above will be explained.

First, from the detection means 340 photoelectric switch 36 to the cutter blade 9
The numerical value obtained by dividing the distance L up to the point 4' by the length l of the fragment 4' is set in the counting counter 38.

Then, the material 4 is transferred to the rollers 8, 8, 8, 8 of the material feeding means T.
The cutter blade 9 is operated while being held and transferred forward.

After the photoelectric switch 36 detects the tip 4a of the material 4, the counting counter 38 starts counting the number of cuts made by the cutter blade 9.

When the tip 4a of the material 4 reaches the through hole 10 of the cutter blade 9 and is cut by the cutter blade 9, the counter 38 counts the set number, and at this point the hydraulic cylinder 33 is activated. The roller 29 of the swing lever 28 comes into contact with the large plate cam 31 and swings greatly.

Then, the cutter blade 9 moves to the front surface of the receiving hole 6 while holding the fragment 4' obtained by cutting in the through hole 10.

At this time, the pressure rod 23 of the fragment pressing means 22 is pressed against the regulating rod 1.
The fragment 4' in the through hole 10 is pressurized rearward via the hole 8 and moved into the receiving hole 6.

After the cutter blade 9 has retreated from the front surface of the receiving hole 6, when the chuck 12 corresponds to the front surface of the receiving hole 6, the rod 27 of the fragment ejecting means 26 is pushed forward greatly by the pressing action of the large plate cam 31, so that The fragment 4' in the hole 6 passes through the chuck 12 and is pushed out to the front of the chuck 12,
It is not clamped by the chuck 12 and therefore is not supplied to the die 3.

Then, the tip 4a of the remaining material 4 is pushed into the through hole 10 of the restored cutter blade 9, and is pushed by the required dimension by the regulating action of the regulating rod 18 and the fixed receiving member 21.
The fragment 4' obtained by cutting with the cutter blade 9 is transferred into the receiving hole 6 in the same manner as described above.

At this time, the operation of the hydraulic cylinder 33 is released and the swing of the rod 27 of the fragment discharge means 26 is caused by the small plate cam 30 and is a small swing, so the fragment 4' pushed out from the receiving hole 6 is inside the chuck 12. It stops, is gripped by the chuck 12, is reversely transferred, and is supplied to the front surface of the die 3, whereupon a forging force is applied by the punch 24 and it is formed into a nut.

Thereafter, the remaining material 4 is cut and formed into nuts in the same manner.

When the tail end 4b of the material 4 is detected by the photoelectric switch 36, the counting counter 38 is activated again to start counting the number of cuts made by the cutter blade 9.

Then, when the tail end 4b of the material 4 is pushed into the through hole 10 of the cutter blade 9 and the cutter blade 9 is activated, the counting counter 38 counts the set number, and at this point the hydraulic cylinder 38 is activated and shakes. Roller 2 of moving lever 28
9 is in contact with the dog plate cam 31 and swings greatly, so the fragment 4' is discharged to the outside of the chuck 12 and is not supplied to the die 3 in the same manner as the tip of the material described above.

In the above embodiment, only one fragment from each of the leading end 4a and tail end 4b of the material is removed, but a plurality of fragments may be removed.

As shown in the embodiments above, according to the material supplying device of the present invention, the fragments obtained from at least the tip and tail of the material can be discharged to the outside of the chuck and can be reliably prevented from being supplied to the die. Pieces of irregular shape or shorter than the required size obtained from the tail end are not fed to the die.
Therefore, damage to the die and punch can be prevented, and nuts can be continuously pressed for a long period of time.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with the first figure being a perspective view and the second figure being a perspective view.
The figure is a plan view, Figure 3 is a sectional view taken along line AA in Figure 2, Figure 4 is a sectional view taken along line BB in Figure 2, Figure 5 is a plan view showing the operating state of the cutter blade, and Figure 6 is an operating state diagram of the chuck. 2...Body, 3...Dice, 4...Material, 4a...Tip, 4b...
Tail end, 5... Guide hole, 6... Receiving hole, 7... Feeding means, 9... Cutter blade, 10... Through hole, 11... Swinging means, 12... Chuck, 13... Drive means, 18... Regulating rod, 21... Fixed receiving member, 22...pressing means, 26...discharging means, 34...detecting means.

Claims (1)

[Claims] 1 A die and a guide hole for guiding the linear material forward are provided on the front of the machine, and a receiving hole is provided between the die and the guide hole to receive the piece of material, and a receiving hole is provided at the rear of the guide hole. is provided with a material feeding means consisting of a plurality of opposing rollers in order to insert the material to the front of the machine body through the guide hole, and the front surface of the guide hole has a through hole that opens in the front-rear direction and can receive the tip of the material. A cutter blade is disposed, and a cutter blade moving means configured by a crank mechanism is provided for reciprocating the cutter blade between the guide hole and the receiving hole, and a chuck capable of clamping a piece of material is provided in front of the receiving hole. A chuck driving means constituted by a crank mechanism is provided to reciprocate the chuck between the receiving hole and the die, a regulating rod is provided in the through hole of the cutter blade so as to be movable in the front and rear direction, and a guide hole is provided. A fixed receiving member is provided in front of the cutter blade that corresponds to the front end surface of the regulating rod when the through hole of the cutter blade corresponds to the guide hole, and a fixed receiving member is provided in front of the receiving hole that corresponds to the front end surface of the regulating rod when the through hole of the cutter blade corresponds to the receiving hole. A fragment pressing means consisting of a pressurizing iron is provided at the rear of the receiving hole to push the rod backward to transfer the fragments in the through hole into the receiving hole. A fragment ejecting means consisting of a rod that protrudes forward and press-fits into the chuck, a swing lever that swings this rod, and a cam is provided, and the material transfer path is such that at least the fragments of the tip and tail end of the material are in the receiving hole. material detection switch that detects when the
A cutter blade operation detection switch and a cutting counter are provided to detect the leading and trailing ends of the material, and based on the detection signal of the detection means, the fragment ejecting means is actuated to at least the leading end of the material being pushed into the receiving hole. and a material supply device for a nut former, characterized in that it is configured to discharge the fragments obtained from the tail end to the outside of the chuck.