JPH08309594A - Vibration compacting device and vibration press molding device - Google Patents

Abstract

PURPOSE: To prevent galling of a die and to realize vibration compacting in an uniform compact density by keeping a vibration stand having a vibration generating device in a prescribed interval against an attaching base stand being built-in with a member to be compacted, connecting and supporting with a guide shaft with a flange. CONSTITUTION: In a vibration stand 13 of a vibration compacting device S attaching an upper die and in a vibration stand 13 of the vibration compacting device S attaching a lower die, a hard urethane pad 15 and a coil spring 16 are installed between an attaching base stand 10 and them, and the vibration stand 13 is vibrated up and down with a guide shaft 21 with a flange while being sunk a few. When a press ram is lowered and a vibration generating device 14 of the vibration compacting device S attaching the upper die and the lower die is operated, a powder material inside a compacting measure is applied with a few vibration vertically, horizontally and slantly. In such a way, caused on a few vibration, the powder material in the compacting measure is made able to be uniformly and precisely compacted with vibration press in a high density with a comparative low pressurizing force, and because the vibration stand 13 is not moved to an accidental direction, the die galling between the mutual upper and lower dies can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration forming apparatus for dry raw materials, wet materials, semi-wet materials, etc., which are powder raw materials, and a vibration press forming apparatus therefor. It is used as a vibration press molding device by being integrally incorporated into

[0002]

2. Description of the Related Art The inventor of the present invention, in a vibration press molding machine disclosed in Japanese Patent Publication No. 6-69684, organically applies a vibration force and a pressing force to the inside of a powder raw material filled in a molding frame. The powder raw material is subjected to pressure deaeration molding.

[0003]

However, in recent years, in powder molding, from the viewpoint of eliminating the need for post-processing of the molded product, from the beginning, molding processing with high precision of outer shape is required. To this end, precision of a molding die used for molding is required to be precise, and the clearance of the die tends to be required to have a molding precision of 100 minutes or more. However, even if a precision-processed molding die is used, it is practically difficult to perform such high-precision processing by the above-mentioned vibration press molding machine. The reason is that in the case of the above vibration press molding machine, the vibration generator is set on the press ram to which the upper mold is attached, and the storage support frame is fixedly supported on the upper lift board by the cushioning material and the mounting bolts and nuts. It is configured to be. Therefore, when vibration is applied to the press ram, the entire support frame including the press ram vibrates with relatively large amplitude in the front-back, left-right, and up-down directions with reference to the vicinity of the cushioning material including the bolts and nuts. It tends to be formed, which has a complicated effect on the upper mold, which makes accurate molding difficult. Similarly, the press bed also tends to form vibrations with a relatively large amplitude, which has a complex effect on the lower mold, which also makes accurate molding difficult, and As a result, due to the unexpected shaking from above and below, the upper mold collides with the lower mold, and so-called galling of the mold tends to cause damage to the mold itself. Therefore, there is a limit to the precision of the mold clearance between the upper mold and the lower mold, and it is necessary to process high-precision molded products such that the mold clearance is 100 minutes or 1000 minutes. It's difficult.

[0004]

Therefore, according to the present invention, in order to solve the above-mentioned problems, as described in claim 1, vibration is caused to the mounting base 10 in which the members to be compressed 15, 16 are built. A vibration forming device in which the vibrating plates 13 to which the generators 14 are attached are arranged so as to face each other with a predetermined gap therebetween, and the vibrating plates 13 are connected to and supported by the mounting base 10 by the flanged guide shafts 21. provide. More specifically, as described in claim 2, a mounting board 10 having partition members 11A to 11D formed on the board surface and a vibration board 13 having a vibration generator 14 mounted on the board surface are opposed to each other. The members to be compressed 15 and 16 are housed between the plate surface of the vibrating plate 13 and the plate surface of the mounting base 10,
Provided is a vibration forming apparatus in which 3 and the mounting base 10 are connected by a guide shaft 21 with a flange, and the vibrating plate 13 is slidably inserted and supported on the guide shaft 21 with a flange. Claim 3
As described in, the lower mold 2 is placed on the press bed 2 on the lower side.
8 is arranged, and the pressure cylinder 6 is fixed to the upper fixing plate 4,
Press ram 5 that is vertically moved by the pressurizing cylinder 6
In a press molding machine in which the upper die 29 is disposed on the press ram 5, and the lower die 28 and the press bed 2 are
, And between the upper die 29 and the press ram 5, or both, the vibration press molding apparatus is provided with the vibration molding apparatus S according to claim 1 or 2.

[0005]

The operation of the vibration forming apparatus S of the present invention is as follows.
The vibration generator 14 operates to vibrate the vibrating plate 13, so that the upper die 29 and the lower die 28 fixed to the vibrating plate 13 form vibrations of minute amplitude in the vertical, horizontal, and diagonal directions. To be done. In addition, the vibration of the vibrating plate 13 causes the members 15 and 1 to be compressed.
6, the transmission to the mounting base 10 is significantly weakened,
Further, when the pressure applied by the pressure cylinder 6 acts on the upper mold 29 and the lower mold 28 fixed to the vibrating plate 13, the compressed member 1
The pressing force acts against the compressive force of 5, 16 and
With respect to the direction of vibration, the guide shaft 21 with a flange smoothly and reliably regulates and guides in the vertical direction, and moves up and down with a stroke in a small range.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the basic construction of a press molding machine in which the vibration molding apparatus S according to the present invention is incorporated will be described with reference to FIG. 1 is a press machine stand installed with a space left and right, 2
Is a rectangular disc-shaped press bed, which is fixed over the upper part of the press base 1. Reference numeral 3 denotes a guide column vertically supported at the four corners of the press bed 2, and the lower end portion thereof is fixed to the bottom portion of the press bed 2. 4 is a guide pillar 3
An upper fixing plate 5 inserted through and fixed to the upper end of the upper support plate 5 is a press ram vertically inserted through an upper part of the guide column 3, and 6 is a pressurizing cylinder that is hydraulically or pneumatically actuated. The cylinder rod 7 has its lower end connected and fixed to the center of the press ram 5. Denoted at 8 is a demolding frame that can be moved up and down, and is slidably inserted in the lower part of the guide column 3. Reference numeral 9 is an operation cylinder of the demolding frame 8.

Next, the construction of the vibration molding apparatus S according to the present invention which is attached to the above-mentioned press molding machine will be described with reference to FIGS.
It will be described based on. Reference numeral 10 is a rectangular mounting base, and partition members 11A to 11D having appropriate heights, lengths and widths are fixed by screws 12 to the board surface on the front surface side. Among them, the partition members 11A and 11B are provided at the front and rear end portions and the left and right end portions excluding the four corners of the mounting base 10, and the partition member 11C is provided inside the partition member 11B at the left and right end portions and in the front and rear direction. The partition member 11D is provided with a space therebetween, and the partition member 11D is provided between the center of the partition member 11A and the center of the partition member 11C. Reference numeral 13 denotes a vibrating plate which is attached to the mounting base 10 so as to face each other in the vertical direction, and a vibration generator 14 is attached to the center of the back side of the plate.

Reference numerals 15 and 16 are hard urethane pads and coil springs that function as members to be compressed, and are the mounting base 10 defined by partition members 11A to 11D.
It is scattered in the space of and fixed with screws 17 and 18.
Reference numeral 19 is an annular recess provided in the four corners on the back surface side of the vibrating plate 13, and a bush 20 is fitted and fixed in the recess 19, as shown in the sectional views of FIGS. 4 and 5. Reference numeral 21 is a guide shaft with a collar for connecting and fixing the mounting base 10. The shaft portion 21A of the base end portion of the guide shaft 21 is fitted into the bush 20 to form a vibrating plate 13
Supports slidably up and down. Reference numeral 22 denotes a spacer, and 23 denotes a stopper for preventing the guide shaft 21 with a collar from coming off. The stopper is fixed to the surface of the vibrating plate 13 with a bolt 24 via the spacer 22 so that the collar portion 21B of the guide shaft 21 with a collar is fixed. It is engaged and supported. Reference numeral 25 is a shaft tip portion 21C of the flanged guide shaft 21.
Is a nut for fixing the to the mounting base 10. As described above, the compressed members 15, 1 are provided between the mounting base 10 and the vibrating plate 13.
6, the mounting base 10 and the vibrating plate 13 are connected and supported by a guide shaft 21 with a flange so that the vibrating plate 13 can be finely moved relative to the mounting base 10 as shown in FIG. It is formed in a state of being supported by floating while holding a gap. 26
Is a T groove formed on the surface of the vibrating plate 13,
As shown in the overall view of FIG. 1 and the enlarged view of FIG. 6, the lower mold 28 and the upper mold 2 are engaged by the bolts and nuts 27 engaged with the grooves 26.
9 is attached. In addition, 30 is a fixing bolt of the mounting base 10.

Therefore, the vibration forming apparatus S is shown in FIG.
As shown in FIG. 6 and FIG. 6, the fixing bolt 30 of the mounting base 10 is fixed to the press bed 2 in order to install and fix it to the lower press bed 2, and the lower mold 28 installed on the vibrating plate 13 is attached to the T groove 26. Secure with engaged bolts and nuts 27. Also,
In order to attach and fix the vibration forming apparatus S to the press ram 5 on the upper side shown in FIGS. 1 and 6, the vibration forming apparatus S shown in FIG. Is fixed to the bottom surface of the press ram 5, and the upper die 29 is attached and fixed to the vibrating plate 13 to form the vibration forming apparatus S of the upper die 29 in the press ram 5. Thus, the lower mold 28 is attached to the press bed 2 on the lower side in the press molding machine of FIG.
1 and 6, the vibration forming apparatus S for the upper mold 29 and the vibration forming apparatus S for the upper die 29 are vertically symmetrically arranged on the press ram 5 on the upper side. Incidentally, 31 is a molding outer frame, which is fitted to the lower mold 28 and whose outer peripheral portion is fixed to the demolding frame 8.

Therefore, a molding outer frame 31 is attached to the lower mold 28 described above.
As shown in FIG. 1 and FIG. 6, the forming box is formed by fitting. Then, the powder material X is filled in the forming box, and then the pressurizing cylinder 6 is operated and the cylinder rod 7 is expanded / contracted to move the press ram 5 downward to move the upper die 29 to the forming outer frame 31. Pressurizing after being engaged in a temporary manner, and then operating the vibration generator 14 in the vibration molding apparatus S having the lower mold 28 attached thereto and the vibration generator 14 in the vibration molding apparatus S having the upper mold 29 attached thereto. Then, a fine vibration having a small amplitude is applied to the powder raw material X of the forming box in all the vertical, horizontal and oblique directions. As described above, due to the pressure applied by the pressurizing cylinder 6 and the slight vibration applied to the lower mold 28 and the upper mold 29 by the vibration generator 14, the powder material X of the forming box is uniform, high in density and high in height. Precision press molding is performed.

At that time, the vibrating plate 13 in the vibration forming apparatus S on the upper side to which the upper mold 29 is attached and the vibrating plate 1 in the vibration forming apparatus S on the lower side to which the lower mold 28 is attached.
3, a hard urethane pad 15 and a member to be compressed such as a coil spring 16 are interposed between each of the mounting bases 10. Further, the vibrating plate 13 is attached to the mounting base 10 and the guide shaft 21 with a collar is provided. Thus, the vibrating plate 13 is guided to move vertically while slightly sinking. Therefore, the pressing force applied to the press ram 5 is directly transmitted to the mounting base 10, and the vibration is applied to the vibrating plate 13 which vibrates in the vertical, horizontal, and diagonal directions with a small amplitude through the flanged guide shaft 21. It is indirectly transmitted, and is directly transmitted to the upper die 29, and the reaction from the upper die 29 is directly transmitted to the vibrating plate 13 which is slightly vibrating, and the reaction is transmitted to the guide shaft 21 with the collar.
And indirectly transmitted to the mounting base 10 via the members to be compressed 15, 16. As a result, the pressing force of the press ram 5, the slight vibration of the vibration generator 14 to the vibrating plate 13 and the compressive force of the compressed members 15 and 16 act from the upper portion of the powder raw material X filled in the molding box, and , Press bed 2
The fine vibration applied to the vibrating plate 13 in the vibration molding apparatus S installed in the above and the compressive force of the members to be compressed 15, 16 act from the lower part of the powder raw material X packed in the molding box, so that the powder packed in the molding box. The raw material X is subjected to vibration press molding with a relatively low pressure and a uniform density with high precision.

[0012]

According to the present invention, as described in claim 1,
The vibrating plates 13 to which the vibration generator 14 is attached are arranged so as to face each other with a predetermined gap, with respect to the mounting base 10 having the members to be compressed 15, 16 built therein.
0, the vibration forming device in which the vibrating plate 13 is connected and supported by the flanged guide shaft 21, more specifically, as described in claim 2, the partition members 11A to 1A having a stopper function on the plate surface.
1D-formed mounting base 10 and vibration generator 1 on the board surface
The vibrating plate 13 to which 4 is attached is opposed to each other, and the members to be compressed 15, 16 are housed between the plate surface of the vibrating plate 13 and the plate surface of the mounting base 10, and the vibrating plate 13 and the mounting base 1 are arranged.
0 and 0 are connected by a guide shaft 21 with a collar, and the guide shaft 2 with a collar is connected.
Since the vibrating plate 13 is slidably inserted and supported with respect to 1, the vibrating plate 13 is guided by the mounting base 10 and moved in the vertical direction, and the vibrating plate 13 is in an unexpected direction. Since it does not move to the upper mold 29 and the lower mold 28, the galling phenomenon between the upper mold 29 and the lower mold 28 is prevented, and the vibration of the vibration generator 14 causes the vibration of the minute amplitude to be formed on the vibrating plate 13. , High precision vibration molding is performed.
Further, as described in claim 3, a lower die 28 is arranged on the lower press bed 2, a pressurizing cylinder 6 is fixed to the upper fixed platen 4, and a press ram is operated to move up and down by the pressurizing cylinder 6. 5 is arranged, and the upper die 29 is attached to the press ram 5.
In a press molding machine having the above-mentioned arrangement, the lower die 28 and the press bed 2 or the upper die 29 and the press ram 5 may have one or both of them. Since the vibration press forming apparatus is equipped with the vibration forming apparatus S, the pressing force of the press ram 5 and the vibration generator 14
The micro-vibration of the vibrating plate 13 by the vibrating plate and the compressive force of the compressed members 15, 16 act from the upper part of the powder raw material X filled in the compacting box, and the vibrating plate in the vibrating forming apparatus S installed in the press bed 2 13, slight vibration to member 13, member to be compressed 15,
The compressive force of 16 acts from the lower part of the powder raw material X packed in the molding box, so that the powder raw material X packed in the molding box
However, it brings about various effects such as vibrating press molding with a high precision with a relatively low pressing force and a uniform density.

[Brief description of drawings]

FIG. 1 is a front view showing an overall outline of a press machine equipped with a vibration molding device.

FIG. 2 is an exploded perspective view of a vibration forming device.

FIG. 3 is a half sectional plan view of the vibration forming apparatus.

FIG. 4 is a vertical cross-sectional view of the vibration forming device.

FIG. 5 is a cross-sectional view showing a state in which a mounting base and a vibration plate are attached by a guide shaft with a collar.

FIG. 6 is an enlarged view of an essential part showing a state where the vibration forming device is attached to a lower press bed and an upper press ram.

[Explanation of symbols]

 S Vibration forming device 1 Press machine base 2 Press bed 3 Guide column 4 Upper fixed plate 5 Press ram 6 Pressurizing cylinder 7 Cylinder rod 8 Demolding frame 9 Operating cylinder 10 Mounting base 11 Partition member 13 Vibration plate 14 Vibration generator 15 Hard urethane Made pad 16 Coil spring 19 Recess 20 Bush 21 Guide shaft with collar 22 Spacer 23 Stopper stopper 24 Bolt 25 Nut 26 T groove 27 Bolt nut 28 Lower mold 29 Upper mold 30 Fixing bolt 31 Molding outer frame

Claims (6)

[Claims] 1. A vibrating plate 13 having a vibration generator 14 attached to a mounting base 10 in which members 15 and 16 to be compressed are built-in so as to be opposed to each other with a predetermined gap provided therebetween. The vibrating plate 13 with respect to the base 10 and the guide shaft 21 with the collar
A vibration forming device characterized by being connected and supported by a. 2. A partition member 11 having a stopper function on the board surface.
The mounting base 10 on which A to 11D are formed and the vibration plate 13 having the vibration generator 14 mounted on the plate surface are opposed to each other, and between the plate surface of the vibration plate 13 and the plate surface of the mounting base 10.
The members to be compressed 15, 16 are stored, the vibrating plate 13 and the mounting base 10 are connected by a guide shaft 21 with a collar, and the vibrating plate 13 is slidably inserted and supported on the guide shaft 21 with a collar. A vibration molding device characterized by the above. 3. A guide shaft 2 with a collar in a recess 19 of a vibrating plate 13.
3. The vibration forming apparatus according to claim 2, wherein 1 is inserted and fixed, and the flange portion 21B of the flanged guide shaft 21 is fixedly supported by a stopper 23. 4. A lower die 28 is disposed on the lower press bed 2, a pressure cylinder 6 is fixed to an upper stationary platen 4, and a press ram 5 that is vertically moved by the pressure cylinder 6 is disposed. In a press molding machine in which an upper die 29 is disposed on the press ram 5, the lower die 28 and the press bed 2 and / or the upper die 29 and the press ram 5 may have one or both of them. A vibration press molding apparatus comprising the vibration molding apparatus S according to claim 2 or claim 3. 5. The vibration press molding apparatus according to claim 4, wherein the mounting base 10 of the vibration molding apparatus S is fixed to the press bed 2, and the lower die 28 is fixed to the vibration plate 13 of the vibration molding apparatus S. 6. The vibration press molding apparatus according to claim 4, wherein the mounting base 10 of the vibration molding apparatus S is fixed to the press ram 5, and the upper die 29 is fixed to the vibrating plate 13 of the vibration molding apparatus S.