JPH0123679Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

TECHNICAL FIELD The present invention relates to a rotary press device used for forming metal scraps generated during cutting operations and the like.

[Conventional technology]

Press machines are used to process metal scraps such as dust powder, which press and form the processed material into a cylindrical object for convenient transportation and subsequent processing. The press machine includes, for example, a box-shaped storage section, a hydraulic cylinder that temporarily tightens the workpiece placed in the storage section from above, and a hydraulic cylinder that tightens the workpiece from the side after temporary tightening. A structure is known in which the side gate of the storage section is opened after tightening is completed, and the molded product can be pushed out of the storage section using the stroke of the latter hydraulic cylinder.

[Problem that the invention attempts to solve]

The press machine with the above structure cannot move on to the next press process until after one press operation is completed and the molded product is released, and it is also possible to continuously input the objects to be processed, so the work efficiency is very high. In order to obtain a molded product with uniform bulk density and no variation in tightening, a large hydraulic cylinder is required, as well as a long stroke, which inevitably increases the size of the entire device. There was a problem in that the space for installation was limited.

[Means to solve the problem]

The present invention was developed in view of the above points, and its purpose is to provide a press section (jig) that can press the object to be processed in stages and a discharge section for the formed object, and the discharge operation is performed on the subsequent object. The object of the present invention is to provide a rotary pressing device in which the step-by-step pressing operation of the product to be treated is carried out while the step-by-step pressing operation is in progress, and the step-by-step pressing operation and the discharging operation can be carried out continuously on a turntable; The purpose of the present invention is to mount a turntable that performs intermittent rotation at a predetermined angle on a base, and on this turntable, four tubular jigs whose bottom surfaces are located on the base are mounted along the same circumference. At the same time, a hopper is installed above the turntable to feed the workpiece into two adjacent jigs of the above-mentioned jigs. Four first to fourth hydraulic cylinders are provided above the turntable, the first and second hydraulic cylinders being arranged above the hopper, and the base facing directly below the fourth hydraulic cylinder. This is achieved by a rotary press device having a window hole in the platform for releasing the molded product.

【Example】

Below, an embodiment of the present invention will be described with reference to the attached drawings.A turntable 3 is rotatably mounted on a base 2 provided on a structure frame 1. Four jigs 4, 5, 6, and 7 are fixed along the same circumference at equal intervals (90° intervals), and these jigs 4 to 7 are all tubular and are attached to the turntable 3. It penetrates vertically and is attached with its lower surface positioned above the base 2. Reference numeral 8 denotes a hopper supported by a support 9, which is partitioned into two chambers by a partition wall 8a, and the discharge ports at both bottoms thereof are located above the movement path of the jigs 4 to 7. It is located at a position where the workpiece can be fed into two adjacent jigs through the discharge port. Above the jigs 4 to 7, there are first to fourth hydraulic cylinders 11, 1 at positions corresponding to one of the jigs.
These hydraulic cylinders 11 to 14 are installed on a fixed plate 10 constructed on the frame 1, and the first hydraulic cylinder 1
The first piston rod 15 and the piston rod 16 of the second hydraulic cylinder 12 extend into the hopper 8, and these pistons 15a and 16a can be freely inserted into the two jigs that have been moved directly below the discharge port of the hopper 8. has been done. On the other hand, the pistons 17a and 1 of the piston rods 17 and 18 of the third hydraulic cylinder 13 and the fourth hydraulic cylinder 14
8a can also be freely inserted into the jig that has been moved directly below it. Therefore, the first hydraulic cylinder 11 is used for temporarily tightening the workpiece (for pushing into the jig), and the second hydraulic cylinder 12 is used for intermediate tightening, and in particular, the third hydraulic cylinder 13 The fourth hydraulic cylinder has a larger capacity than the other hydraulic cylinders 11, 12, and 14, and is used for final tightening of the processed material.
The hydraulic cylinders 14 are each equipped with a function for discharging the molded product. In addition, the fourth
A discharge window hole 19 is provided in a portion of the base 2 facing directly below the hydraulic cylinder 14, and a chute 20 is connected to this window hole 19. Next, the drive mechanism of the turntable 3 mentioned above will be explained. A rotary plate 22 and a pinion 23 are fixed to a rotary shaft 21 that passes through the base 2 and extends vertically, and is positioned below the base 2. Yes, rotating plate 2
The operating pin 25, which is moved up and down by a solenoid 24 attached to the base 2, is connected to the arc-shaped elongated hole 2 provided in the base 2.
6, and when it rises, each jig 4 mentioned above
- 7 are sequentially engaged in locking holes a, b, c, and d provided on the turntable 3 corresponding to the mounting positions. On the other hand, the pinion 23 has a rack 2 which is reciprocated by a drive device 27 such as a hydraulic cylinder.
8 are engaged with each other, and the pinion 23 is adjusted in advance so that it can rotate forward and backward through 90 degrees by reciprocating the rack 28. The turntable 3 is mounted on the base 2 coaxially with the rotary plate 22 by inserting the upper end of the rotating shaft 21 into a boss (not shown) provided on the lower surface of the turntable 3. In the figure, 21a is a bearing stand for the rotating shaft 21, 28a is a connecting portion between the drive unit 27 and the rack 28, and 29 is a shaft hole provided in the base 2. According to the above configuration, the material to be processed (not shown) such as dry powder supplied into the hopper 8 is first put into the jigs 4 and 5 as shown in the drawing, and at that point The hydraulic cylinders 11 and 12 operate to tighten the object to be processed, and then the turntable 3 rotates 90 degrees to move the jigs 4 to 7 and throw the object into the following jig 6. At the same time, the object to be processed is further thrown into the preceding jig 5 as needed. As the turntable 3 rotates intermittently through 90 degrees in this way, the objects to be processed are sequentially introduced into each of the jigs 4 to 7, and the third hydraulic cylinder 13 finally tightens the formed product. The processed material is the fourth
It is pushed out from the window hole 19 by the hydraulic cylinder 14, and can be discharged onto the chute 20 and collected. In this case, the turntable 3 can reliably rotate 90 degrees intermittently by the reciprocating motion of the operating pin 25, and each hydraulic cylinder 11 to
The stepwise pressing operation by the hydraulic cylinder 13 and the discharge operation of the molded product by the hydraulic cylinder 14 can always be performed at accurate timing. Therefore, it goes without saying that the driving machine 27 of the rotating shaft 21 and each of the hydraulic cylinders 11 to 14 can be operated synchronously by normal sequence control, and the driving mechanism of the turntable 3 is Other drive mechanisms can be used without being limited to this embodiment.
Incidentally, it is preferable to use a screw conveyor to supply the workpiece to the hopper 8.

[Effect of the idea]

The present invention is as described above, and is capable of continuously performing step-by-step pressing work on a workpiece by the operation of a hydraulic cylinder and intermittent rotation of a turntable, and the molded workpiece can be pressed continuously in stages. Since the material to be processed can be released while the pressing operation is in progress, it is possible to significantly improve the work efficiency. By uniformizing the amount of input and performing step-by-step pressing operations, it is possible to easily obtain molded products of excellent quality that are uniformly compressed with little variation, and the entire device is compactly configured. This is extremely advantageous in terms of installation space, and in addition, the hydraulic cylinder can be used in a small size, which is effective in achieving energy savings, so its practical value is extremely large.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Figure 1 is a front view, Figure 2 is a plan view, Figure 3 is a side view, and Figure 4 is a side view.
The figure is a perspective view showing the main parts separated. In the figure, 2 is a base, 3 is a turntable, 4,
5, 6, 7 are jigs, 8 is a hopper, 11 is a first hydraulic cylinder, 12 is a second hydraulic cylinder,
13 is a third hydraulic cylinder, 14 is a fourth hydraulic cylinder, and 19 is a window hole.

Claims (1)

[Scope of utility model registration request] A turntable that performs intermittent rotation at a predetermined angle is mounted on a base, and on this turntable, four tubular jigs whose bottom surfaces are located on the base are installed at equal intervals along the same circumference. , above the turntable are two of the jigs adjacent to each other.
A hopper for feeding the workpiece into each jig is installed, and four first to fourth hydraulic cylinders are installed above the turntable in correspondence with one of the jigs. The second hydraulic cylinder is disposed above the hopper, and a window hole for discharging the molded product is provided in a portion of the base facing directly below the fourth hydraulic cylinder. Rotary press equipment.