JP2727358B2 - Vibration mill - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vibration mill.

A vibrating mill is used, for example, when pulverizing or mixing an object to be processed. The vibration mill is provided with a drive shaft mounted on a container supported by an elastic body such as a spring, and a vibration source is mounted on the drive shaft connected to a drive motor,
By applying a vibration to the container by rotating the motion generation source via the drive shaft by the drive motor, the processing object loaded in the container is usually obtained with the assistance of a processing medium such as a ball or a rod, For example, they are crushed or mixed.

The present invention relates to an improved vibration mill as described above, particularly to a batch vibration mill.

<Prior art and its problems> Conventionally, as a batch-type vibrating mill, a type in which a drive shaft penetrates a container and the drive shaft is equipped with a vibration source is used.

However, this type of batch vibration mill has a problem that it is difficult to continuously line the outer peripheral cylinder of the drive shaft in the container. Although the vessel and the outer cylinder of the drive shaft are made of wear-resistant steel products, it is still inevitable that some of the steel products will be mixed into the powder during processing. The contaminants have a significant adverse effect on the powder quality after processing. Therefore, in order to obtain high-quality powder, the inner peripheral surface of the container and the outer peripheral cylinder of the drive shaft in the container,
The lining is made of ceramics, polyamide resin, urethane rubber, etc., but it is difficult to firmly apply the lining to the outer cylinder of the drive shaft because of its shape. Since the powder and the processing medium violently collide with the outer cylinder of the shaft, the lining applied to the outer cylinder of the drive shaft in the container is easily peeled off.

On the other hand, in order to solve the problem that the lining is easily peeled as described above, conventionally, as another batch type vibration mill, a drive shaft is provided via a support member on both sides of a container supported by an elastic body such as a spring, Vibration sources are mounted on the drive shafts connected to the drive motors, respectively, and the processed shafts are used to discharge the processed powder from an outlet opened below the side surface of the container. This batch-type vibrating mill has an advantage that the lining is not originally peeled off due to the drive shaft because the drive shaft does not penetrate the container.

However, this batch type vibration mill discharges powder after processing from an outlet opened below the side surface of the container while vibrating the container state during processing, that is, while keeping the container upright. , It takes time to discharge,
There is a problem that a quality variation such as a difference in particle size occurs between the powder at the beginning of discharge and the powder at the end of discharge.

<Problems to be Solved by the Invention, Means for Solving the Problems> The present invention provides an improved batch-type vibrating mill that solves the above-mentioned conventional problems.

Thus, the present invention provides a drive shaft which is provided on both sides of a container supported by an elastic body such as a spring via a support member, is connected to a drive motor via the support member, and is tuned by a timing belt. Wherein the container is provided with a lid and a main body, and a perforated plate is mounted between the lid and the main body in which an entrance for powder is opened or the entrance or exit. A short arm member rotatably supported by a support member is fixed to each end of the main body so as to protrude therefrom, and at least one of the arm members is fixed by a stopper formed on the support member. The present invention relates to a vibration mill whose main feature is that it is configured to be obtained.

An important point in the present invention is that a short arm member that does not penetrate the main body is protrudingly fixed to both ends of the main body of the container including the lid and the main body, and the arm member is rotatably supported by the support member. And at least one of the arm members is configured to be fixed by a stopper formed on the support member.

According to the present invention having the above structure, after performing a predetermined process in a state where the container is erected and the arm member is fixed to the support member by tightening the stopper, for example, the arm member is loosened by, for example, loosening the stopper. Is rotatable with respect to the support member, and the powder after processing is discharged from a relatively large-diameter opening / closing opening provided in the lid of the container in a state where the container is rotated and inverted with the arm member. . Therefore, according to the present invention, the above-described lining peeling due to the drive shaft does not originally occur, and in particular, the powder can be discharged quickly and a uniform powder can be obtained.

Hereinafter, the configuration of the present invention will be described in more detail with reference to the drawings.

<Embodiment> FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line AA of FIG. Container 11 is support member 2
Springs 31, 32, 3 fixed on a base 23 via 1, 22
3, 34 (however, the springs 33, 34 are not shown). The container 11 is supported so as to give a certain free movement. The support members 21 and 22 include a container 1
On both sides of 1, drive shafts 41 and 42 are rotatably supported via bearings 51, 52, 53 and 54, and a total of four pairs of vibration generating sources (in the case of the drawing) 61,62,6
The drive shafts 41, 42 are connected to drive motors 43, 44 via universal joints (not shown), and are tuned by timing belts 45 engaged with both.

The container 11 includes a lid 13 and a main body 14 in which an entrance 12 for powder is opened, and the lid 13 has an inclined surface 13a toward the entrance 12 having a relatively large diameter. Eye plate 7 between
1 is detachably screwed, and the perforated plate 71 is provided with a plurality of holes (not shown) that do not allow a processing medium such as a ball or a rod to pass therethrough but allow the processed powder to pass. Body
Short arm members 81 and 82 are welded and fixed to both ends of 14,
Therefore, the arm members 81 and 82 are protruded without penetrating the main body 14, and the respective ends of the arm members 81 and 82 are half-spring washers 55 and 56 (however, the washer 56 (Not shown) so as to be rotatable. The support member 21 has a center portion which is slightly notched, and stoppers 91 and 92 reinforced with ribs 91a and 92a are integrally formed at both ends of the cut-out upper portion of the center. A bolt and nut combination part 93 is attached to 91 and 92, and in the case of the drawing, the stoppers 91 and 92 are tightened by the combination part 93, so that the support member 21 and the arm are The member 81 is fixed. In the case of the drawing, the container 11 is fixed to the support member 21 in an upright state while being supported by the support members 21 and 22 via the arm members 81 and 82.
By loosening 1,92, the container 11 becomes rotatable and therefore can be in an inverted state.

In one embodiment shown, in processing the powder,
The container 11 is erected and the combination part 93 is tightened to
1 and 92 are fastened to the arm member 81, so that the container 11 is
When the drive motors 43 and 44 are actuated in a state fixed to 21, the drive motors 43 and 44 → drive shafts 41 and 42 and vibration sources 61 to 64 tuned by the timing belt 45 → support members 21 and 22 → arms Vibration is applied to the container 11 in the order of the members 81, 82 → the container 11,
In this state, the object to be processed which has been previously loaded into the container 11 is
Usually, for example, crushing and mixing are performed with the assistance of a processing medium such as a ball and a rod. In this case, the arm members 81 and 82
Does not penetrate through the container, and thus the lining peeling as described above due to the drive shaft when penetrating the container does not occur originally. And when discharging the powder after processing,
Once the operation of the drive motors 43 and 44 is stopped, the combination parts 93 are loosened and the fasteners 91 and 92 are loosened from the arm members 81, so that the container 11 is rotatable, and the container 11 is inverted, where it is assembled again. Vibration is applied to the container 11 in the same manner as described above in a state where the fittings 93 are tightened and the stoppers 91 and 92 are tightened to the arm member 81, and the processed powder is discharged from the entrance 12 while being separated by the perforated plate 71. . In this case, the processed powder is collected and discharged to the relatively large-diameter entrance / exit 12 located immediately below the center, so that the discharge is fast, and thus it is possible to obtain a homogeneous powder without, for example, particle size variation. it can. In discharging the powder after the treatment, especially when the treatment is a wet treatment, the powder can be discharged simply by inverting the container 11.

As described above, the configuration of the present invention has been described based on one embodiment illustrated, but it is needless to say that the present invention is not limited to the one embodiment. For example, the perforated plate may be attached to the entrance of the lid, or two drive shafts may be tuned by a timing belt, so that one drive motor may be connected to one of the drive shafts, In this case, the one drive motor can change the speed, and the stopper may be a so-called clamp type or hydraulic cylinder type. Then, it is effective to apply a continuous lining to at least the inner peripheral surface of the main body with ceramics, a polyamide-based resin, urethane rubber, or the like, and to provide at least a main body with a jacket that can be circulated with a heat medium. It is also effective to extend one of the arm members, attach a reduction gear to the extension, and rotate the gear with a drive motor to invert or erect the container. These can be appropriately selected depending on the properties of the object to be treated, the amount of treatment, and the quality required of the powder after treatment.

<Effects of the Invention> As is already clear, the present invention described above has an effect that a homogeneous and high-quality powder can be obtained in a short time.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG.
It is an AA line expanded sectional view of a figure. 11 ... container, 13 ... lid, 14 ... body 21, 22 ... support member, 31, 32 ... spring 41, 42 ... drive shaft, 43, 44 ... drive motor 45 ... timing belt 61 , 62,63,64… Vibration source, 71… Punch plate 81,82… Arm member, 91,92… Stopper

Claims (4)

(57) [Claims] 1. A drive shaft is provided on both sides of a container supported by an elastic body such as a spring via a support member, and a drive shaft is provided through the support member. The drive shaft is connected to a drive motor and tuned by a timing belt. Vibration mills each equipped with a vibration generating source, wherein the container has a lid and a main body, and a perforated plate is mounted between the lid and the main body in which an entrance for powder is opened or at the entrance. A short arm member rotatably supported by a support member is fixed to each end of the main body so as to protrude therefrom, and at least one of the arm members can be fixed by a stopper formed on the support member. A vibration mill characterized by being configured as described above. 2. The vibration mill according to claim 1, wherein the inner peripheral surface of the main body is lined. 3. The vibration mill according to claim 1, wherein a jacket through which the heat medium can flow is provided around the main body. 4. The vibration mill according to claim 1, wherein the arm member is connected to a drive motor and is rotated by the drive motor.