JPH0576636U - Product deburring device - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to remove the middle burr punched from the product and bite into the punch of the product reliably, and it is possible to solve the problem of defective delivery of the product and the middle burr. It is to provide a product deburring device that is useful in achieving automation. [Structure] A product C such as a forged product is set on a die, and a punch 14 is formed on the peripheral surface of a punch 14 for punching out a center burr D. An air eject hole 13 through which air is blown from the lower end to forcibly drop the middle burr D 14.
It is characterized by being provided with b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a product deburring device for punching and removing hole burrs in products such as forged products used for machine parts such as automobile engines.

[0002]

[Prior Art]

 Generally, in forging, as shown in FIG. 2, an appropriately heated base metal A is set between the upper and lower molds 1 and 2 of the forging machine in the first stage to be rough-formed, and the rough-formed product B is set in the second stage. A forged product C is obtained by setting between the upper and lower dies 4 and 5 of the forging machine and finish-forming.

If the product C is a ring-shaped machine part, it is necessary to remove the middle burr (hole burr) D and the outer burr E after finishing molding. This deburring work is performed by a product deburring device (total cutting die device) 10 shown at the right end of FIG. This product deburring device 10 has a positioning plate 12 for setting a product C on a die 11, above which a punch holder / outer cutting die 13 which is moved up and down by a hydraulic device (not shown) is mounted and supported at the center thereof. The punch 14 is provided, and the knockout block 15 is supported by the knockout pin 16 between the punch-out die 13 and the outer punching die 13 and is vertically movable by another hydraulic device. Then, with the product C set, the outer die 13 and the punch 14 are pushed down to punch the outer burr E of the product C and the inner burr D.

By the way, in recent years, there is a strong tendency to automate the deburring work of such a forged product by using a robot, and as a result, as shown in FIG. A device for automatically carrying out the burr D and the outer burr E is being considered.

That is, an unloader 20 is installed on the side of the product deburring device 10, and a rotatable product tray 21 and an openable / closable clamp 22 are projected from the unloader 20 so as to move back and forth. A product transfer conveyor 23 is installed on the lower side. Further, a beam transport conveyor 24 is also installed under the die 11.

Then, when the product deburring apparatus 10 performs deburring work, the middle burr D punched out by the punch 14 falls downward from the hole of the die 11 by its own weight, and is conveyed to a predetermined position by the conveying conveyor 24. Be delivered to. After that, when the punch 14 rises together with the outer cutting die 13 and the knockout block 15, the punch 14 bites the punch 14 and the product C rises, and at this point, the unloader 20 moves forward to move the outer portion left on the positioning plate 12. The burr E is gripped by the clamp 22, and the knockout block 15 is lowered by the knockout pin 16 to remove the product C from the punch 14 and drop it on the tray 21. In this state, the unloader 20 moves backward, the clamp 22 drops the outer burrs E onto the conveyor 23, and then the product tray 21 is inverted to drop the product C onto the conveyor 23 and carry it out to a predetermined position.

[0007]

[Problems to be solved by the device]

 By the way, in the case of automating the deburring work as described above, in the conventional product deburring apparatus 10, the middle burr D punched out by the punch 14 bites on the lower end edge of the punch 14 and falls on the conveyor 24 by its own weight. If the product C does not adhere to the punch 14 that is the upper mold and rises together with the punch 14, the punch-out die 13 and the knockout block 15, the product C is rising or the product tray 21 of the unloader 20 If the product C or the middle burr D falls off from the punch 14 before it goes down, it may not be possible to receive the product C and the medium burr D in the product tray 21 and carry them out to the conveyor 23. In such a case, the device must be stopped, and the worker must manually take out the product C and the inner burr D and place them on the conveyors 23 and 24, which is troublesome and causes a reduction in work efficiency such as a line stop. The problem arises.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reliably remove a middle burr punched out from a product and to bite the product into a punch, resulting in defective delivery of the product or the middle burr. It is to provide a product deburring device which can solve the problem and is useful for achieving full automation of the deburring work.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the product deburring device of the present invention sets a forging product on the die to deburr the middle deburring, and a serrated surface on which the deburred product bites. It is characterized in that the punch is formed with an air eject hole for blowing air from the lower end to forcibly drop the inner burr.

[0010]

[Action]

 According to the product deburring device having the above structure, when a product such as a forged product is set on a die and deburred with a punch, the deburred product is surely eaten by the notch on the peripheral surface of the punch. It goes up with the punch as it is and does not fall until the knockout block is forced down. Further, the middle burr punched out from the product by the punch can be forcedly dropped by blowing out air from the air eject hole formed in the punch. This allows the automatic unloading device to accurately carry out products with punched out inner burr and inner burr.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. Only the upper mold side of the product deburring device is shown here, and the other lower mold side and surrounding products and the carry-out device for the middle burr are the same as those shown in FIGS. Omit it.

On the upper die side of the deburring device for a product C such as a forged product, an outer die 13 that also serves as a punch holder is moved up and down by a hydraulic device (not shown), and a punch 14 is attached and supported at the center of the die 13. A knockout block 15 is supported by a knockout pin 16 between the outer die 13 and the punch 14, and is arranged so as to be able to move up and down by another hydraulic device.

Here, a knurling 14a is formed by knurling on the peripheral surface of the lower end side of the punch 14 so that the product with deburred inside can easily bite, and the punch 14 is vertically penetrated to form an air eject hole. 14b is formed. The air eject hole 14b communicates with the air supply hole 13a penetrating to the lateral side of the punch holder / outer die 13 so that the compressed air supplied from an external press or the like can be blown out from the lower end.

FIG. 1 shows a state immediately after punching the middle burr D and the outer burr E of the forged product C on the die 11 on the lower die side (not shown) by pushing down the outer die 13 and the punch 14. .. At this point, the product C deburred in the middle is surely caught in the notch on the peripheral surface of the punch 14. In addition, the center burr D is bitten by the punch dust at the lower end edge of the punch 14.

When raising the upper mold side in such a state, first, pressure air is blown from the lower end of the air eject hole 14b of the punch 14 to forcibly push out the inner burr D and drop it on the conveyor 24 as shown in FIG. Let As a result, the middle burr D is surely carried out by the conveyor 24 to a predetermined position without being left behind.

When the burr D is dropped from the punch 14, the punch 14 rises together with the outer die 13 and the knockout block 15. At this time, as described above, the product C maintains the state of being securely bitten by the notched portion 14a on the peripheral surface of the punch 14, and ascends integrally with the punch 14 without dropping itself on the way. Then, as shown in FIG. 3, the unloader 20 moves forward, grips the outer burr E with the clamp 22, and at the time when the product tray 21 has advanced to the position just below the punch 14, the knockout block 15 is lowered by the knockout pin 16. , The product C is forcibly pushed down to be removed from the punch 14 and dropped on the product saucer 21.

After that, the unloader 20 moves backward, the clamp 22 drops the outer burr E onto the conveyor 23, and then the product tray 21 is inverted to drop the product C onto the conveyor 23 and set it at a predetermined position, as described above. It comes to be carried out.

In this way, the middle burr D punched out from the product C, the product C and the outer flash E can be reliably and automatically carried out without the need to stop the device or to intervene the worker. Labor saving and work efficiency can be improved.

Further, since the air eject hole 14b is formed in the punch 14 and the pressure air is blown from this, the cooling effect of the die such as the punch which is heated by deburring can be obtained.

[0020]

[Effect of the device]

 Since the product deburring device of the present invention is configured as described above, it is possible to surely remove the middle burrs punched from the product and bite into the punch of the product, which solves the problem of defective delivery of the product and the middle burrs. The result is that it will be very useful in achieving full automation of the deburring operation.

[Brief description of drawings]

FIG. 1 is a sectional view of only an upper mold side showing an embodiment of a product deburring device of the present invention.

FIG. 2 is a schematic configuration diagram of a general forging process and a deburring device for forged products.

FIG. 3 is a partial cross-sectional perspective view showing an automatic unloading device for a product and a burr that has been removed in the product deburring device.

[Explanation of symbols]

C ... Product, D ... Medium burr, 11 ... Dice, 14 ... Punch,
14a ... Jagged, 14b ... Air eject holes.

Claims (1)

[Scope of utility model registration request] 1. A product deburring device for setting a product such as a forged product on a die and deburring the inside with a punch, while forming a notch on the peripheral surface of the punch to which the deburred product bites. A product deburring device, characterized in that the punch is provided with an air eject hole for blowing air from the lower end to forcibly drop the inner burr.