JPH0360898A - Transfer device for molded article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a molded body transfer device for transporting a molded body discharged from a molding machine, and particularly relates to a molded body transfer device for transporting a molded body discharged from a molding machine, and particularly to prevent damage to the molded body during transfer handling. The present invention relates to a molded object transfer device that can prevent molded objects from being molded or deformed, and can easily cope with the need to change molding conditions such as the shape and type of the molded object.

(Conventional Technique #1) In the process of manufacturing sintered alloys and ceramic sintered bodies, raw material powders such as alloy powders and ceramic powders are processed using various forming machines such as presses, extruders, rolling machines, or forging machines. A method of molding and heating and sintering the obtained molded body is generally adopted.

For example, when producing a sintered alloy, first, a powder metal powder is compressed to form a compact using a powder compacting press R1 as shown in FIG. Here, the powder molding press machine 1 is
A die plate 3 having a forming hole 2 formed therein, an upper bunch 4 and a lower punch 5 disposed facing each other in the forming hole 2 so as to be freely raised and lowered, and disposed slidably on the upper surface of the die plate 3,
It is composed of a powder feeding box 6 for filling the forming hole 2 with raw material powder, and an extrusion plate 9 attached to the tip of the powder feeding box 6 to push out the compact 7 toward the conveyor 8.

The raw metal powder is passed through the upper and lower bunches 4.5 into the forming hole 2.
The molded body 7 formed by pressing is pushed up to the surface of the die plate 3 by the lower bunch 5 and further transferred in the direction of the conveyor 8 by the extrusion plate 9. The molded bodies 7 placed on the conveyor 8 are sequentially fed to a sintering furnace.

Further, as another configuration example, a powder compacting press molding machine 1a as shown in FIG. 3 is also employed. This powder compacting press molding machine 1a is provided with a chuck 10 for gripping the compact 7 by air drive in place of the extrusion plate 9 shown in FIG. The chuck 10 is configured to open and close its gripping portion using an air drive mechanism (not shown), and to move up and down using a drive cylinder 11.

The molded body 7 discharged from the molding hole 2 is gripped by the chuck 10, and further lifted upward by the operation of the drive cylinder 11 and transferred toward the conveyor 8.

(Problem to be solved by the invention) However, in a conventional powder molding press equipped with an extrusion plate as shown in Fig. 2, the molded product is transferred by extruding the bottom part, which makes the molded product particularly fragile. When transporting the die plate, chips may occur at the bottom of the die plate, and especially if the height of the die plate is large, there is a high probability that the die plate will topple over and become deformed or damaged during transport. There was a problem in that if the lower punch protruded, it would be impossible to transfer.

On the other hand, in a press machine of the type shown in FIG. 3 in which the molded product is gripped by an air-driven chuck, it is extremely difficult to adjust the gripping strength of the chuck. In other words, if the gripping strength is set too low, it will be difficult to lift the molded product, while if it is set too high, the molded product will be damaged or scratched, and in either case, the yield of the product will be reduced. There is.

Furthermore, when using a chuck, the operating mechanism becomes complicated and the operating range becomes wider, making it difficult to arrange it in a narrow space inside the press machine. In particular, it has been virtually impossible to provide a mechanism that can transport a plurality of molded bodies at the same time.

Furthermore, when molding various types of molded objects with different dimensions and shapes alternately, it is necessary to replace the chuck for each type of molded object, and to adjust the pressure of the drive air with high precision to change the gripping strength. There was a problem that the operation management of the machine became extremely complicated.

The present invention has been made to solve the above-mentioned problems, and it is possible to prevent breakage and deformation of molded products, especially when transporting soft and brittle molded products, and to reduce the shape and size of molded products. It is an object of the present invention to provide a molded body transfer device that can easily handle cases where molding conditions need to be changed frequently.

(Structure of the Invention) (Means for Solving the Problems) In order to achieve the above object, a molded object transfer device according to the present invention is capable of being detachably attached to the upper surface of a fragile molded object discharged from a forming hole of a molding machine. The soft buffer film to be adhered and the u*m described above are arranged so as to be movable forward and backward in the direction of the molded body to which they are applied, and the above!
11! The present invention is characterized by comprising a magnet body that magnetically attracts the molded body by coming into contact with the molded body through a film.

(Function) According to the molded object transfer device having the above configuration, a buffer film is attached to the upper surface of the molded object, the magnet body is brought into contact with the molded body through the buffer film, and the molded body is brought into contact with the magnet body. It is transported in a predetermined direction while being held by suction.

In this way, the compact is attracted and held by the magnet through the buffer film, so that the impact during adsorption is absorbed by the buffer film, so that no damage to the compact occurs.

Furthermore, it is possible to set the range corresponding to the thickness of the loose "fJIll" as the permissible positioning range of the magnet body, and the positioning accuracy of its operation can be relaxed.

Furthermore, since the upper surface of the molded object is held by magnetic attraction, there is a slight risk that the molded object will fall over.

In addition, even if there is a change in the type of compacts or the quantity to be transferred at one time, this can be easily accommodated by changing the number of magnets purchased and their decoys as appropriate, making it easier to manage the operation of the molding machine. It becomes extremely easy.

(Example) Next, an embodiment of the present invention will be described with reference to the attached drawings. Fig. 1 shows an embodiment of the compact transfer device according to the present invention, and an example of the device installed in a powder compacting press. 3 is a cross-sectional view shown in FIG. 2. Elements that are the same as those in the conventional example shown in FIGS. 2 and 3 are given the same reference numerals, and redundant explanation thereof will be omitted.

That is, the molded body transfer device 12 according to this embodiment transfers the fragile molded body 7 discharged from the molding hole 2 of the powder molding press 1b.
A soft material that is removably attached to the top of the ! II! i membrane 1
3 and the film 3I2 M in the direction of the molded body 7 on which the film 13 is adhered! It is configured to include a magnet body 14 which is retractably disposed and magnetically attracts the molded body 7 by coming into contact with the molded body 7 through the buffer film 13 .

Moreover, the main body frame 15 of the molded article transfer device 12 moves between the molding hole 2 and the conveyor 8! The tip of the moving drive shaft 16 O
It is fixed to the s part. A guide rod 17 is erected within the frame of the main body frame 15, and a loose protection holding frame 19 is connected to the guide rod 17 via a linear bearing 18.
is freely attached to the raised R. This buffer film holding frame 19
A soft vinyl chloride sheet with a thickness of about 2 m is attached to the lower surface of the buffer film 13 as a buffer film 13, and the buffer film 13 is configured to be raised and lowered together with a buffer film holding frame 19 by a drive cylinder 20.

On the other hand, a guide rod 21 is also provided upright within the frame of the buffer film holding frame 19, and a magnet body holding frame 23 is attached to this guide rod 21 via a linear bearing 22 so as to be freely dismountable. A magnet 14 for magnetically adsorbing the molded body 7 is attached to the lower surface of the magnet holding frame 23, and the magnet 14 is configured to move up and down together with the magnet holding frame 23 by a drive cylinder 24.

As the magnet body 14, a permanent magnet such as a samarium-cobalt type magnet is used, which is small and lightweight and has a large magnetic force.

Further, the operational positioning of the buffer film holding frame 19 and the magnet body holding frame 23 is carried out by proximity sensors (not shown) attached to the drive cylinders 20 and 24.

Next, the effects will be explained.

Raw material t'4 filled into the molding hole 2 of the powder molding press 1b
The & group powder is pressed by the upper and lower bunches 4 and 5 to form a compact 7. The molded body 7 is pushed upward by the lower bunch 5. Then, with respect to the molded body 7 discharged onto the die plate 3, the drive cylinder 20 is first operated to lower the loose film holding frame 19, and the buffer film 13 is applied to the upper surface of the molded body 7.

Next, the drive cylinder 24 is operated to lower the magnet body holding frame 23 toward the molded body 7, and the magnet body 14 is brought into contact with the upper surface of the molded body 7 via the M membrane 13. The molded body 7 is magnetically attracted to the magnet body 14 via the buffer film 13 . In this state, the drive cylinder 20 is operated to raise the **g holding frame 19 that has attracted the molded body 7. Then, by moving the drive shaft 16 in the direction of the conveyor 8 in the raised state, the compact 7 is moved above the conveyor 8. Next l1
The till holding frame 19 is lowered to bring the molded body 7 into contact with the upper surface of the conveyor 8. Then, only the magnet body holding frame 23 is raised to separate the magnet body 14 and the molded body 7. By roughly removing and attaching the loose VFJ membrane 13 upward, the molded body 7 is separated onto the conveyor 8 and is automatically conveyed to a sintering furnace (not shown) by the conveyor 8 and fired.

By repeating the above operations for each molding process, the molded body 7 is continuously taken out from the powder press molding machine 1b and transferred.

As described above, according to the molded object transfer device 12 according to the present embodiment, each molded object 7 is attracted and held by the magnet body 14 via the buffer film 13, so that the impact at the time of attraction is reduced to a buffer II! As a result of being absorbed by 113, the molded body 7 is not damaged. Furthermore, it is possible to set the range corresponding to the thickness of the buffer film 13 as the permissible positioning range of the magnet body, and the positioning accuracy of its operation can be relaxed.

Furthermore, since the upper surface of the molded body 7 is held by magnetic attraction, there is little risk that the molded body 7 will be ground during transportation.

Furthermore, even if there is a change in the type of molded body 7 or the number of sweets to be transferred at one time, it is possible to easily accommodate the changed molding conditions by appropriately changing the number a5 of the magnet bodies 14 and the arrangement of the grooves. Therefore, the operation management of the powder press molding machine 1b becomes extremely easy.

In the above example, a sintered alloy is produced by compression molding a magnetic raw metal powder, but the same applies to ceramic compacts as long as they contain magnetic components. can do.

Further, although the magnet body is shown as an example constructed using a small and lightweight permanent magnet, it is also possible to construct the magnet body using an electromagnet if there is sufficient load and installation space.

Furthermore, if the upper surface of the molded object is formed in a curved shape, by attaching a magnet body with a shape that matches the curved surface, it is possible to set a large attraction area, and the molded object can be held safely. can be transferred to.

In addition to the soft vinyl chloride sheet, the MY membrane can also be made of a flexible elastic material such as natural rubber. Note that, in order to easily separate the loose WIII t from the magnetic molded body, it is preferable to use a non-magnetic material that is not magnetized. In addition, by forming the buffer film with a material particularly excellent in soft elasticity, it is possible to further reduce the accuracy of positioning the loose film holding frame when attaching the loose film to the molded body.

〔Effect of the invention〕

As explained above, according to the compact transfer device according to the present invention, a buffer film is adhered to the upper surface of the compact, and the magnet body is brought into contact with the compact through the loose T# film. is transported in a predetermined direction while being attracted and held by a magnet.

In this way, the molded object is loose! Since it is adsorbed and held by the magnet body through 11g1, the impact at the time of adsorption is absorbed by the buffer film, and as a result, the molded object is not damaged.

Further, it is possible to set the range corresponding to the thickness of the loose l1WIA as the permissible positioning range of the magnet body, and the positioning accuracy of its operation can be relaxed.

Furthermore, since the upper surface of the molded object is held by magnetic attraction, there is less risk of the molded object falling over.

In addition, even if there is a change in the type of molded object or the quantity to be transferred at one time, it can be easily accommodated by changing the number of magnets J3 and their arrangement as appropriate, making it extremely easy to manage the operation of the molding machine. becomes easier.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a compact transfer device according to the present invention, FIG. 2 is a sectional view showing an example of the configuration of a conventional powder compacting press, and FIG. 3 is a sectional view of another conventional powder compacting press. FIG. 2 is a sectional view showing an example of the configuration of the machine. 1.1a, lb...Powder molding press machine, 2...Molding hole, 3...Die plate, 4...Upper punch, 5...
... Lower punch, 6... Powder feeding box, 7... Molded object, 8
... Conveyor, 9... Extrusion plate, 10... Chuck, 11... Drive cylinder, 12... Molded object transfer device, 13...! I membrane, 14... magnet body, 15...
- Main body frame, 16... Drive shaft, 17... Guide rod, 18... Linear bearing, 19... Buffer film holding frame, 20... Drive cylinder, 21...
Guide rod, 22... Linear bearing, 23...
- Magnet holding frame.

Claims (1)

[Claims] a soft buffer film that is removably attached to the upper surface of the fragile molded body discharged from the molding hole of the molding machine; A molded body transfer device comprising: a magnet body that magnetically attracts the molded body by coming into contact with the molded body through the buffer film.